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Journal articles on the topic 'Intracellular biomineralization'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Lemloh, Marie Louise. "Biomineralization in Ciliates." Key Engineering Materials 672 (January 2016): 40–46. http://dx.doi.org/10.4028/www.scientific.net/kem.672.40.

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From a biomineralization point of view, the protist world is far less investigated than its metazoan counterpart. However, eukaryotic single-celled organisms offer a very unique access to discover biomineralization mechanisms in vivo. With respect to intracellular mechanisms involved in ion enrichment, mineral transport or vesicle formation ciliates represent a good model system. One important group of protists, the ciliates, is very common and numerous studies have been performed on their ecology, cell biology, morphology or genetics. Ciliates are also known for their formation of diverse min

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Song, Zhiyong, Long Liu, Xiaoyu Wang, et al. "Intracellular delivery of biomineralized monoclonal antibodies to combat viral infection." Chemical Communications 52, no. 9 (2016): 1879–82. http://dx.doi.org/10.1039/c5cc09252c.

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Conventional therapeutic monoclonal antibodies (mAbs) are invalid for intracellular viruses but by using in situ biomineralization treatment, they can be successfully delivered into cells to inhibit intracellular viral replication.

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Uebe, René, Birgit Voigt, Thomas Schweder, et al. "Deletion of a fur-Like Gene Affects Iron Homeostasis and Magnetosome Formation in Magnetospirillum gryphiswaldense." Journal of Bacteriology 192, no. 16 (2010): 4192–204. http://dx.doi.org/10.1128/jb.00319-10.

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ABSTRACT Magnetotactic bacteria synthesize specific organelles, the magnetosomes, which are membrane-enveloped crystals of the magnetic mineral magnetite (Fe3O4). The biomineralization of magnetite involves the uptake and intracellular accumulation of large amounts of iron. However, it is not clear how iron uptake and biomineralization are regulated and balanced with the biochemical iron requirement and intracellular homeostasis. In this study, we identified and analyzed a homologue of the ferric uptake regulator Fur in Magnetospirillum gryphiswaldense, which was able to complement a fur mutan

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Sun, Bin, Junbing Jiang, Jiali Tao, and Zuozhen Han. "Biomineralization of Carbonates Induced by Mucilaginibacter gossypii HFF1: Significant Role of Biochemical Parameters." Minerals 12, no. 5 (2022): 614. http://dx.doi.org/10.3390/min12050614.

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Although the precipitation of carbonate minerals induced by various bacteria is widely studied, the changes in the biochemical parameters, and their significant role in the biomineralization processes, still need further exploration. In this study, Mucilaginibacter gossypii HFF1 was isolated, identified, and used to induce carbonate minerals at various Mg/Ca ratios. The biochemical parameters were determined in order to explore the biomineralization mechanisms, including cell concentration, pH, ammonia, carbonic anhydrase activity, and alkaline phosphatase activity. The characteristics of extr

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Benzerara, K., F. Skouri-Panet, J. Li, et al. "Intracellular Ca-carbonate biomineralization is widespread in cyanobacteria." Proceedings of the National Academy of Sciences 111, no. 30 (2014): 10933–38. http://dx.doi.org/10.1073/pnas.1403510111.

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Li, Jinhua, Isabel Margaret Oliver, Nithavong Cam, et al. "Biomineralization Patterns of Intracellular Carbonatogenesis in Cyanobacteria: Molecular Hypotheses." Minerals 6, no. 1 (2016): 10. http://dx.doi.org/10.3390/min6010010.

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Xie, Beibei, Huichao Zhao, Yuan-Fu Ding, et al. "Drug-free tumor therapy via spermine-responsive intracellular biomineralization." Journal of Controlled Release 357 (May 2023): 572–79. http://dx.doi.org/10.1016/j.jconrel.2023.04.018.

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Martignier, Agathe, Montserrat Filella, Kilian Pollok, et al. "Marine and freshwater micropearls: biomineralization producing strontium-rich amorphous calcium carbonate inclusions is widespread in the genus <i>Tetraselmis</i> (Chlorophyta)." Biogeosciences 15, no. 21 (2018): 6591–605. http://dx.doi.org/10.5194/bg-15-6591-2018.

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Abstract. Unicellular algae play important roles in the biogeochemical cycles of numerous elements, particularly through the biomineralization capacity of certain species (e.g., coccolithophores greatly contributing to the “organic carbon pump” of the oceans), and unidentified actors of these cycles are still being discovered. This is the case of the unicellular alga Tetraselmis cordiformis (Chlorophyta) that was recently discovered to form intracellular mineral inclusions, called micropearls, which had been previously overlooked. These intracellular inclusions of hydrated amorphous calcium ca

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Martignier, A., M. Pacton, M. Filella, et al. "Intracellular amorphous carbonates uncover a new biomineralization process in eukaryotes." Geobiology 15, no. 2 (2016): 240–53. http://dx.doi.org/10.1111/gbi.12213.

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10

Han, Zuozhen, Xiao Gao, Hui Zhao, et al. "Extracellular and Intracellular Biomineralization Induced by Bacillus licheniformis DB1-9 at Different Mg/Ca Molar Ratios." Minerals 8, no. 12 (2018): 585. http://dx.doi.org/10.3390/min8120585.

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Biomineralization has become a research hotspot and attracted widespread attention in the field of carbonate sedimentology. In this study, precipitation of carbonate minerals was induced by Bacillus licheniformis DB1-9 bacteria, (identity confirmed with its phylogenetic tree), to further explore the biomineralization mechanisms. During experiments, lasting up to 24 days with varying Mg/Ca molar ratios and regular monitoring of conditions, ammonia and carbonic anhydrase are released by the bacteria, resulting in a pH increase. Carbonic anhydrase could have promoted carbon dioxide hydration to p

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Li, Jinhua, Nicolas Menguy, Christophe Gatel, et al. "Crystal growth of bullet-shaped magnetite in magnetotactic bacteria of the Nitrospirae phylum." Journal of The Royal Society Interface 12, no. 103 (2015): 20141288. http://dx.doi.org/10.1098/rsif.2014.1288.

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Magnetotactic bacteria (MTB) are known to produce single-domain magnetite or greigite crystals within intracellular membrane organelles and to navigate along the Earth's magnetic field lines. MTB have been suggested as being one of the most ancient biomineralizing metabolisms on the Earth and they represent a fundamental model of intracellular biomineralization. Moreover, the determination of their specific crystallographic signature (e.g. structure and morphology) is essential for palaeoenvironmental and ancient-life studies. Yet, the mechanisms of MTB biomineralization remain poorly understo

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Nam, Onyou, Iwane Suzuki, Yoshihiro Shiraiwa, and EonSeon Jin. "Association of Phosphatidylinositol-Specific Phospholipase C with Calcium-Induced Biomineralization in the Coccolithophore Emiliania huxleyi." Microorganisms 8, no. 9 (2020): 1389. http://dx.doi.org/10.3390/microorganisms8091389.

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Biomineralization by calcifying microalgae is a precisely controlled intracellular calcification process that produces delicate calcite scales (or coccoliths) in the coccolithophore Emiliania huxleyi (Haptophycea). Despite its importance in biogeochemical cycles and the marine environment globally, the underlying molecular mechanism of intracellular coccolith formation, which requires calcium, bicarbonate, and coccolith-polysaccharides, remains unclear. In E. huxleyi CCMP 371, we demonstrated that reducing the calcium concentration from 10 (ambient seawater) to 0.1 mM strongly restricted cocco

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Yan, Huaxiao, Daniel Cosmos Owusu, Zuozhen Han, et al. "Extracellular, Surface, and Intracellular Biomineralization of Bacillus subtilis Daniel-1 Bacteria." Geomicrobiology Journal 38, no. 8 (2021): 698–708. http://dx.doi.org/10.1080/01490451.2021.1937406.

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Han, Yu, Bin Sun, Huaxiao Yan, et al. "Biomineralization of Carbonate Minerals Induced by The Moderate Halophile Staphylococcus Warneri YXY2." Crystals 10, no. 2 (2020): 58. http://dx.doi.org/10.3390/cryst10020058.

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Although biomineralization of minerals induced by microorganisms has been widely reported, the mechanisms of biomineralization and the characteristics of the biominerals precipitated needs to be studied further. In this study, Staphylococcus warneri YXY2, a moderate halophile, was used to induce the precipitation of carbonate minerals at various Mg/Ca molar ratios. To investigate the biomineralization mechanism, the growth curve, pH changes, ammonia test, the concentration of bicarbonate and carbonate ions, and the activity of carbonic anhydrase (CA) and alkaline phosphatase (ALP) were determi

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Sun, Bingbing, and Hong Shen. "Controlling Surface-Induced Nanocomposites by Lipoplexes for Enhanced Gene Transfer." Journal of Nanomaterials 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/784836.

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Surface-induced biomineralization represents a flexible approach to immobilizing DNA onto biomaterial surfaces for surface-mediated DNA delivery. Immobilized naked DNA is uniformly embedded in thin films of nanocomposites, which limits the internalization of DNA to some cell types, such as neuronal cells. In this study, DNA molecules were initially complexed with liposomes to form lipoplexes. Subsequently, these lipoplexes were immobilized onto a cell culture compatible surface through surface-induced biomineralization. Under all the conditions we examined, lipoplexes were efficiently immobili

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Zhao, Yanyang, Zuozhen Han, Huaxiao Yan, et al. "Intracellular and Extracellular Biomineralization Induced by Klebsiella pneumoniae LH1 Isolated from Dolomites." Geomicrobiology Journal 37, no. 3 (2019): 262–78. http://dx.doi.org/10.1080/01490451.2019.1695023.

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Zhu, Xiaohui, Adam P. Hitchcock, Dennis A. Bazylinski, et al. "Measuring spectroscopy and magnetism of extracted and intracellular magnetosomes using soft X-ray ptychography." Proceedings of the National Academy of Sciences 113, no. 51 (2016): E8219—E8227. http://dx.doi.org/10.1073/pnas.1610260114.

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Characterizing the chemistry and magnetism of magnetotactic bacteria (MTB) is an important aspect of understanding the biomineralization mechanism and function of the chains of magnetosomes (Fe3O4nanoparticles) found in such species. Images and X-ray absorption spectra (XAS) of magnetosomes extracted from, and magnetosomes in, wholeMagnetovibrio blakemoreistrain MV-1 cells have been recorded using soft X-ray ptychography at the Fe 2p edge. A spatial resolution of 7 nm is demonstrated. Precursor-like and immature magnetosome phases in a whole MV-1 cell were visualized, and their Fe 2p spectra w

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Butler, Clive S., Charles M. Debieux, Elizabeth J. Dridge, Peter Splatt, and Matthew Wright. "Biomineralization of selenium by the selenate-respiring bacterium Thauera selenatis." Biochemical Society Transactions 40, no. 6 (2012): 1239–43. http://dx.doi.org/10.1042/bst20120087.

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Bacterial anaerobic respiration using selenium oxyanions as the sole electron acceptor primarily result in the precipitation of selenium biominerals observed as either intracellular or extracellular selenium deposits. Although a better understanding of the enzymology of bacterial selenate reduction is emerging, the processes by which the selenium nanospheres are constructed, and in some cases secreted, has remained poorly studied. Thauera selenatis is a Gram-negative betaproteobacterium that is capable of respiring selenate due to the presence of a periplasmic selenate reductase (SerABC). SerA

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Yan, Xin, Qi Zhang, Xinyue Ma, Yewen Zhong, Hengni Tang, and Sui Mai. "The mechanism of biomineralization: Progress in mineralization from intracellular generation to extracellular deposition." Japanese Dental Science Review 59 (December 2023): 181–90. http://dx.doi.org/10.1016/j.jdsr.2023.06.005.

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Schwaner, Caroline, Sarah Farhat, John Haley, Emmanuelle Pales Espinosa, and Bassem Allam. "Proteomic and Transcriptomic Responses Enable Clams to Correct the pH of Calcifying Fluids and Sustain Biomineralization in Acidified Environments." International Journal of Molecular Sciences 23, no. 24 (2022): 16066. http://dx.doi.org/10.3390/ijms232416066.

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Seawater pH and carbonate saturation are predicted to decrease dramatically by the end of the century. This process, designated ocean acidification (OA), threatens economically and ecologically important marine calcifiers, including the northern quahog (Mercenaria mercenaria). While many studies have demonstrated the adverse impacts of OA on bivalves, much less is known about mechanisms of resilience and adaptive strategies. Here, we examined clam responses to OA by evaluating cellular (hemocyte activities) and molecular (high-throughput proteomics, RNASeq) changes in hemolymph and extrapallia

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Balfourier, Alice, Nathalie Luciani, Guillaume Wang, et al. "Unexpected intracellular biodegradation and recrystallization of gold nanoparticles." Proceedings of the National Academy of Sciences 117, no. 1 (2019): 103–13. http://dx.doi.org/10.1073/pnas.1911734116.

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Gold nanoparticles are used in an expanding spectrum of biomedical applications. However, little is known about their long-term fate in the organism as it is generally admitted that the inertness of gold nanoparticles prevents their biodegradation. In this work, the biotransformations of gold nanoparticles captured by primary fibroblasts were monitored during up to 6 mo. The combination of electron microscopy imaging and transcriptomics study reveals an unexpected 2-step process of biotransformation. First, there is the degradation of gold nanoparticles, with faster disappearance of the smalle

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Mayorova, Tatiana D. "Differentiation of Crystal Cells, Gravity-Sensing Cells in the Placozoan Trichoplax adhaerens." Journal of Marine Science and Engineering 9, no. 11 (2021): 1229. http://dx.doi.org/10.3390/jmse9111229.

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Trichoplax adhaerens are simple animals with no nervous system, muscles or body axis. Nevertheless, Trichoplax demonstrate complex behaviors, including responses to the direction of the gravity vector. They have only six somatic cell types, and one of them, crystal cells, has been implicated in gravity reception. Multiple crystal cells are scattered near the rim of the pancake-shaped animal; each contains a cup-shaped nucleus and an intracellular crystal, which aligns its position according to the gravity force. Little is known about the development of any cell type in Trichoplax, which, in th

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Monteil, Caroline L., Karim Benzerara, Nicolas Menguy, et al. "Intracellular amorphous Ca-carbonate and magnetite biomineralization by a magnetotactic bacterium affiliated to the Alphaproteobacteria." ISME Journal 15, no. 1 (2020): 1–18. http://dx.doi.org/10.1038/s41396-020-00747-3.

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Romero-Núñez, Araceli, Gonzalo González, Abel Moreno, and Mayra Cuéllar-Cruz. "Biomineralization and biosynthesis of nanocrystalline materials and selective uptake of toxic metals controlled by five types of Candida species." CrystEngComm 21, no. 15 (2019): 2585–95. http://dx.doi.org/10.1039/c8ce02197j.

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Fischer, Anna, Manuel Schmitz, Barbara Aichmayer, Peter Fratzl, and Damien Faivre. "Structural purity of magnetite nanoparticles in magnetotactic bacteria." Journal of The Royal Society Interface 8, no. 60 (2011): 1011–18. http://dx.doi.org/10.1098/rsif.2010.0576.

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Magnetosome biomineralization and chain formation in magnetotactic bacteria are two processes that are highly controlled at the cellular level in order to form cellular magnetic dipoles. However, even if the magnetosome chains are well characterized, controversial results about the microstructure of magnetosomes were obtained and its possible influence in the formation of the magnetic dipole is to be specified. For the first time, the microstructure of intracellular magnetosomes was investigated using high-resolution synchrotron X-ray diffraction. Significant differences in the lattice paramet

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Picone, Giovanna, Concettina Cappadone, Alice Pasini, et al. "Analysis of Intracellular Magnesium and Mineral Depositions during Osteogenic Commitment of 3D Cultured Saos2 Cells." International Journal of Molecular Sciences 21, no. 7 (2020): 2368. http://dx.doi.org/10.3390/ijms21072368.

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In this study, we explore the behaviour of intracellular magnesium during bone phenotype modulation in a 3D cell model built to mimic osteogenesis. In addition, we measured the amount of magnesium in the mineral depositions generated during osteogenic induction. A two-fold increase of intracellular magnesium content was found, both at three and seven days from the induction of differentiation. By X-ray microscopy, we characterized the morphology and chemical composition of the mineral depositions secreted by 3D cultured differentiated cells finding a marked co-localization of Mg with P at seve

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Sheela, Soumya, Waad Kheder, and A. B. Rani Samsudin. "Investigating the influence of titanium particle size and concentration on osteogenic response of human osteoblasts – in vitro study." Biomaterial Investigations in Dentistry 11 (June 13, 2024): 66–75. http://dx.doi.org/10.2340/biid.v11.40843.

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Purpose: The purpose of this study was to investigate the correlation between the size and concentration of titanium particles and the osteogenic response of human osteoblasts (HOB). Materials and Methods: Different concentrations of titanium dioxide nano- and micro-particles were prepared and their biocompatibility on HOBs was analyzed using XTT assay. The changes in the actin cytoskeletal organization were studied by confocal laser scanning microscopy. The generation of intracellular reactive oxygen species (ROS) by HOBs after exposure to titanium dioxide particles was analyzed using ROS ass

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Yarra, Tejaswi, Kirti Ramesh, Mark Blaxter, Anne Hüning, Frank Melzner, and Melody S. Clark. "Transcriptomic analysis of shell repair and biomineralization in the blue mussel, Mytilus edulis." BMC Genomics 22, no. 1 (2021): 437. https://doi.org/10.1186/s12864-021-07751-7.

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<strong>Background: </strong>Biomineralization by molluscs involves regulated deposition of calcium carbonate crystals within a protein framework to produce complex biocomposite structures. Effective biomineralization is a key trait for aquaculture, and animal resilience under future climate change. While many enzymes and structural proteins have been identified from the shell and in mantle tissue, understanding biomieralization is impeded by a lack of fundamental knowledge of the genes and pathways involved. In adult bivalves, shells are secreted by the mantle tissue during growth, maintenanc

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Tanaka, Masayoshi, Atsushi Arakaki, Sarah S. Staniland, and Tadashi Matsunaga. "Simultaneously Discrete Biomineralization of Magnetite and Tellurium Nanocrystals in Magnetotactic Bacteria." Applied and Environmental Microbiology 76, no. 16 (2010): 5526–32. http://dx.doi.org/10.1128/aem.00589-10.

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ABSTRACT Magnetotactic bacteria synthesize intracellular magnetosomes comprising membrane-enveloped magnetite crystals within the cell which can be manipulated by a magnetic field. Here, we report the first example of tellurium uptake and crystallization within a magnetotactic bacterial strain, Magnetospirillum magneticum AMB-1. These bacteria independently crystallize tellurium and magnetite within the cell. This is also highly significant as tellurite (TeO3 2−), an oxyanion of tellurium, is harmful to both prokaryotes and eukaryotes. Additionally, due to its increasing use in high-technology

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Chang, William W., Ann-Sophie Matt, Marcus Schewe, et al. "An otopetrin family proton channel promotes cellular acid efflux critical for biomineralization in a marine calcifier." Proceedings of the National Academy of Sciences 118, no. 30 (2021): e2101378118. http://dx.doi.org/10.1073/pnas.2101378118.

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Otopetrins comprise a family of proton-selective channels that are critically important for the mineralization of otoliths and statoconia in vertebrates but whose underlying cellular mechanisms remain largely unknown. Here, we demonstrate that otopetrins are critically involved in the calcification process by providing an exit route for protons liberated by the formation of CaCO3. Using the sea urchin larva, we examined the otopetrin ortholog otop2l, which is exclusively expressed in the calcifying primary mesenchymal cells (PMCs) that generate the calcitic larval skeleton. otop2l expression i

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Pei, Di, Zhiming Liu, Wenjian Wu, and Biru Hu. "Transcriptome analyses reveal the utilization of nitrogen sources and related metabolic mechanisms of Sporosarcina pasteurii." PLOS ONE 16, no. 2 (2021): e0246818. http://dx.doi.org/10.1371/journal.pone.0246818.

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In recent years, Sporosarcina pasteurii (S. pasteurii) has become one of the most popular bacteria in microbially induced calcium carbonate precipitation (MICP). Various applications have been developed based on the efficient urease that can induce the precipitation of calcium carbonate. However, the metabolic mechanism related to biomineralization of S. pasteurii has not been clearly elucidated. The process of bacterial culture and biomineralization consumes a large amount of urea or ammonium salts, which are usually used as agricultural fertilizers, not to mention probable environmental poll

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Han, Zuozhen, Wenwen Yu, Hui Zhao, Yanhong Zhao, Maurice Tucker, and Huaxiao Yan. "The Significant Roles of Mg/Ca Ratio, Cl− and SO42− in Carbonate Mineral Precipitation by the Halophile Staphylococcus epidermis Y2." Minerals 8, no. 12 (2018): 594. http://dx.doi.org/10.3390/min8120594.

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Carbonate precipitation induced by microorganisms has become a hot topic in the field of carbonate sedimentology, although the effects of magnesium on biomineral formation have rarely been studied. In experiments described here, magnesium sulfate and magnesium chloride were used to investigate the significant role played by Mg2+ on carbonate precipitation. In this study, Staphylococcus epidermidis Y2 was isolated and identified by 16S ribosomal DNA (rDNA) homology comparison and ammonia, pH, carbonic anhydrase, carbonate, and bicarbonate ions were monitored during laboratory experiments. The m

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Bonny, Sandy M., and Brian Jones. "Barite (BaSO4) biomineralization at Flybye Springs, a cold sulphur spring system in Canada's Northwest Territories." Canadian Journal of Earth Sciences 44, no. 6 (2007): 835–56. http://dx.doi.org/10.1139/e06-126.

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The Flybye Springs, Northwest Territories, consist of 10 active vents and numerous small seeps that discharge sulphide- and barium-rich spring waters at an average temperature 8.5 °C. Oxidation of sulphide to sulphate drives precipitation of stellate and platy barite microcrystals in the proximal flow paths. Downstream, and in vent- and tributary-fed ponds, barite is precipitated among streamer and mat forming colonies of sulphur-tolerant microbes, including Thiothrix, Beggiatoa, Thioploca, Chromatium, Oscillatoria, fungi (dominantly Penicillium), and unicellular sulphate reducing bacteria. Th

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Reichinger, Daniela, Manuel Reithofer, Mariam Hohagen, et al. "A Biomimetic, Silaffin R5-Based Antigen Delivery Platform." Pharmaceutics 15, no. 1 (2022): 121. http://dx.doi.org/10.3390/pharmaceutics15010121.

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Nature offers a wide range of evolutionary optimized materials that combine unique properties with intrinsic biocompatibility and that can be exploited as biomimetic materials. The R5 and RRIL peptides employed here are derived from silaffin proteins that play a crucial role in the biomineralization of marine diatom silica shells and are also able to form silica materials in vitro. Here, we demonstrate the application of biomimetic silica particles as a vaccine delivery and adjuvant platform by linking the precipitating peptides R5 and the RRIL motif to a variety of peptide antigens. The resul

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Pan, Zhao, Tucker, et al. "Biomineralization of Monohydrocalcite Induced by the Halophile Halomonas smyrnensis WMS‐3." Minerals 9, no. 10 (2019): 632. http://dx.doi.org/10.3390/min9100632.

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The halophilic bacterium Halomonas smyrnensis from a modern salt lake used in experiments to induce biomineralization has resulted in the precipitation of monohydrocalcite and other carbonate minerals. In this study, a Halomonas smyrnensis WMS‐3 (GenBank:MH425323) strain was identified based on 16S rDNA homology comparison, and then cultured in mediums with 3% NaCl concentration to induce monohydrocalcite at different Mg/Ca molar ratios of 0, 2, 5, 7, and 9. The growth curve of WMS‐3 bacteria, pH values, NH4+ concentration, HCO3− and CO32− concentration, carbonic anhydrase (CA) activity, and t

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Margiotta, Azzurra. "Coupling of Intracellular Calcium Homeostasis and Formation and Secretion of Matrix Vesicles: Their Role in the Mechanism of Biomineralization." Cells 14, no. 10 (2025): 733. https://doi.org/10.3390/cells14100733.

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The human bone is a dynamic, highly vascularized tissue composed of 60–70% minerals, which include mainly calcium phosphate (CaP) in the form of hydroxyapatite (HA) crystals, 30% organic matrix composed of type I collagen fibers, and less than 5% water and lipids. The crystals are formed inside the matrix vesicles (MVs) and are then released in the organic collagen-based fibrous matrix. Extracellular matrix (ECM) formation and mineralization processes, named osteogenesis, are associated with human mesenchymal stem cells (hMSCs) undergoing differentiation into osteoblasts (osteoblastogenesis).

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Gorobets, Svitlana, Oksana Gorobets, and Svitlana Kovalova. "Bioinformatic Analysis of the Genetic Mechanism of Biomineralization of Biogenic Magnetic Nanoparticles in Bacteria Capable of Tumor-Specific Accumulation." Innovative Biosystems and Bioengineering 6, no. 2 (2022): 48–55. http://dx.doi.org/10.20535/ibb.2022.6.2.260183.

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Background. Current methods of targeted cancer therapy are not always effective enough and can lead to side effects, such as an increased risk of autoimmune diseases. It is known that some bacteria are capable of specific accumulation in malignant tumors, and therefore can be used as an alternative means of targeted drug delivery. However, the genetic mechanism of tumor-specific accumulation of bacteria is not fully understood and needs to be studied in more detail. Objective. This work aims to identify, by methods of comparative genomics methods, magnetically controlled bacteria among those f

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Zhao, Yanyang, Huaxiao Yan, Jingxuan Zhou, et al. "Bio-Precipitation of Calcium and Magnesium Ions through Extracellular and Intracellular Process Induced by Bacillus Licheniformis SRB2." Minerals 9, no. 9 (2019): 526. http://dx.doi.org/10.3390/min9090526.

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Removal of calcium and magnesium ions through biomineralization induced by bacteria has been proven to be an effective and environmentally friendly method to improve water quality, but the process and mechanism are far from fully understood. In this study, a newly isolated probiotic Bacillus licheniformis SRB2 (GenBank: KM884945.1) was used to induce the bio-precipitation of calcium and magnesium at various Mg/Ca molar ratios (0, 6, 8, 10, and 12) in medium with 30 g L−1 sodium chloride. Due to the increasing pH and HCO3− and CO32− concentrations caused by NH3 and carbonic anhydrase, about 98%

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Martignier, Agathe, Montserrat Filella, Jean-Michel Jaquet, Mathieu Coster, and Daniel Ariztegui. "First Observation of Unicellular Organisms Concentrating Arsenic in ACC Intracellular Inclusions in Lake Waters." Geosciences 12, no. 1 (2022): 32. http://dx.doi.org/10.3390/geosciences12010032.

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In unicellular organisms, intracellular inclusions of amorphous calcium carbonate (ACC) were initially described in cyanobacteria and, later, in unicellular eukaryotes from Lake Geneva (Switzerland/France). Inclusions in unicellular eukaryotes, named micropearls, consist of hydrated ACCs, frequently enriched in Sr or Ba, and displaying internal oscillatory zonations, due to variations in the Ba:Ca or Sr:Ca ratios. An analysis of our database, consisting of 1597 micropearl analyses from Lake Geneva and 34 from Lake Titicaca (Bolivia/Peru), showed that a certain number of Sr- and Ba-enriched mic

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Han, Zuozhen, Yanyang Zhao, Huaxiao Yan, et al. "The Characterization of Intracellular and Extracellular Biomineralization Induced by Synechocystis sp. PCC6803 Cultured under Low Mg/Ca Ratios Conditions." Geomicrobiology Journal 34, no. 4 (2016): 362–73. http://dx.doi.org/10.1080/01490451.2016.1197986.

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Faivre, Damien, Lars H Böttger, Berthold F Matzanke, and Dirk Schüler. "Intracellular Magnetite Biomineralization in Bacteria Proceeds by a Distinct Pathway Involving Membrane-Bound Ferritin and an Iron(II) Species." Angewandte Chemie International Edition 46, no. 44 (2007): 8495–99. http://dx.doi.org/10.1002/anie.200700927.

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Amor, Matthieu, Vincent Busigny, Mickaël Durand-Dubief, et al. "Chemical signature of magnetotactic bacteria." Proceedings of the National Academy of Sciences 112, no. 6 (2015): 1699–703. http://dx.doi.org/10.1073/pnas.1414112112.

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There are longstanding and ongoing controversies about the abiotic or biological origin of nanocrystals of magnetite. On Earth, magnetotactic bacteria perform biomineralization of intracellular magnetite nanoparticles under a controlled pathway. These bacteria are ubiquitous in modern natural environments. However, their identification in ancient geological material remains challenging. Together with physical and mineralogical properties, the chemical composition of magnetite was proposed as a promising tracer for bacterial magnetofossil identification, but this had never been explored quantit

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Hartmann, Carolin, Martin Elsner, Reinhard Niessner, and Natalia P. Ivleva. "Nondestructive Chemical Analysis of the Iron-Containing Protein Ferritin Using Raman Microspectroscopy." Applied Spectroscopy 74, no. 2 (2019): 193–203. http://dx.doi.org/10.1177/0003702818823203.

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Ferritin is a ubiquitous intracellular iron storage protein of animals, plants, and bacteria. The cavity of this protein acts like a reaction chamber for natural formation and storage of nano-sized particles via biomineralization. Knowledge of the chemical composition and structure of the iron core is highly warranted in the fields of nano technologies as well as biomolecules and medicine. Here, we show that Raman microspectroscopy (RM) is a suitable nondestructive approach for an analysis of proteins containing such nano-sized iron oxides. Our approach addresses: (1) synthesis of suitable ref

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Lin, Wei, Joseph L. Kirschvink, Greig A. Paterson, Dennis A. Bazylinski, and Yongxin Pan. "On the origin of microbial magnetoreception." National Science Review 7, no. 2 (2019): 472–79. http://dx.doi.org/10.1093/nsr/nwz065.

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Abstract A broad range of organisms, from prokaryotes to higher animals, have the ability to sense and utilize Earth's geomagnetic field—a behavior known as magnetoreception. Although our knowledge of the physiological mechanisms of magnetoreception has increased substantially over recent decades, the origin of this behavior remains a fundamental question in evolutionary biology. Despite this, there is growing evidence that magnetic iron mineral biosynthesis by prokaryotes may represent the earliest form of biogenic magnetic sensors on Earth. Here, we integrate new data from microbiology, geol

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Mann, H., and W. S. Fyfe. "Metal uptake and Fe-, Ti-oxide biomineralization by acidophilic microorganisms in mine-waste environments, Elliot Lake, Canada." Canadian Journal of Earth Sciences 26, no. 12 (1989): 2731–35. http://dx.doi.org/10.1139/e89-234.

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Acidic effluent containing enhanced concentrations of toxic heavy metals discharges from a cumulative total of 104 ha of mine-tailings waste in Canada. Communities of acidophilic microorganisms, specifically the unicellular alga Euglena sp. and bacteria, thrive in many of the hostile, low-pH effluent environments, which are otherwise devoid of life. The micro organisms concentrate aqueous dissolved metals onto cell walls and at intracellular sites, during the life cycle, and strongly bind metals during early diagenesis. A sequence is observed in which amorphous Fe and Ti concentrated at cell w

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Ma, Yong, Fangfang Guo, Yunpeng Zhang, Xiuyu Sun, Tong Wen, and Wei Jiang. "OxyR-Like Improves Cell Hydrogen Peroxide Tolerance by Participating in Monocyte Chemotaxis and Oxidative Phosphorylation Regulation in Magnetospirillum Gryphiswaldense MSR-1." Journal of Biomedical Nanotechnology 17, no. 12 (2021): 2466–76. http://dx.doi.org/10.1166/jbn.2021.3205.

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The formation of magnetosomes inside magnetotactic bacteria is a complex process strictly controlled by the intracellular metabolic regulatory system. A series of transcriptional regulators are involved in the biosynthesis of the magnetosome, including OxyR-Like protein, which is indispensable for the maturation of magnetosomes in Magnetospirillum Gryphiswaldense MSR-1. In this study, a new function of the OxyR-Like protein that helps cells resist reactive oxygen species (ROS) was identified. A comparison of expression profile data between wild-type MSR-1 and an oxyR-Like defective mutant demo

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Cotrut, Cosmin M., Alexandru Blidisel, Diana M. Vranceanu, et al. "Evaluation of the In Vitro Behavior of Electrochemically Deposited Plate-like Crystal Hydroxyapatite Coatings." Biomimetics 9, no. 11 (2024): 704. http://dx.doi.org/10.3390/biomimetics9110704.

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The purpose of coatings is to protect or enhance the functionality of the substrate material, irrespective of the field in which the material was designed. The use of coatings in medicine is rapidly expanding with the objective of enhancing the osseointegration ability of metallic materials such as titanium. The aim of this study was to obtain biomimetic hydroxyapatite (HAp)-based coatings on titanium by using the pulsed galvanostatic method. The morphology of the HAp-based coatings revealed the presence of very thin and wide plate-like crystals, grown perpendicular to the Ti substrate, while

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Reiprich, Sebastian, Elif Akova, Attila Aszódi, and Veronika Schönitzer. "Hyaluronan Synthases’ Expression and Activity Are Induced by Fluid Shear Stress in Bone Marrow-Derived Mesenchymal Stem Cells." International Journal of Molecular Sciences 22, no. 6 (2021): 3123. http://dx.doi.org/10.3390/ijms22063123.

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During biomineralization, the cells generating the biominerals must be able to sense the external physical stimuli exerted by the growing mineralized tissue and change their intracellular protein composition according to these stimuli. In molluscan shell, the myosin-chitin synthases have been suggested to be the link for this communication between cells and the biomaterial. Hyaluronan synthases (HAS) belong to the same enzyme family as chitin synthases. Their product hyaluronan (HA) occurs in the bone and is supposed to have a regulatory function during bone regeneration. We hypothesize that H

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Raimann, Adalbert, Christine Haberler, Janina Patsch, et al. "Lethal Encephalopathy in an Infant with Hypophosphatasia despite Enzyme Replacement Therapy." Hormone Research in Paediatrics 94, no. 9-10 (2021): 390–98. http://dx.doi.org/10.1159/000520341.

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Hypophosphatasia (HPP) is an inborn error of metabolism caused by loss-of-function mutations in the biomineralization-associated alkaline phosphatase gene, encoding tissue-nonspecific alkaline phosphatase (TNSALP). Symptoms include skeletal hypomineralization and extra-skeletal manifestations such as pyridoxine (B6)-responsive seizures due to impaired cerebral B6 passage. Since the introduction of enzyme replacement therapy (ERT), skeletal manifestations and B6-responsive seizures were reported to improve significantly. Nevertheless, there is an increasing evidence of B6-independent neurologic

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Zlobina, O. N., and E. A. Predtechenskaya. "DISTRIBUTION NATURE OF MACRO- AND MICROELEMENTS IN ORGANIC RESIDUES FROM MESOZOIC REMAINS OF WEST AND CENTRAL SIBERIA." Geology and mineral resources of Siberia, no. 3 (2024): 31–48. http://dx.doi.org/10.20403/2078-0575-2024-3-31-48.

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Features of biomineralization, fossilization and distribution of chemical elements were revealed in remains of various groups of organisms, and relationship with conditions of accumulation and post-sedimentation transformations of deposits of the Middle–Upper Jurassic and Lower Cretaceous of Siberia was determined. Plates of coccolithophorids, skeletons of radiolaria and acantharia, fragments of hetetoidea frameworks, relics of red algaes, diatoms and/or cyanobacteria were studied among the remains of organisms. The composition of coccoliths from various types of rocks includes essential (calc

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