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Letteratura scientifica selezionata sul tema "Basic Helix loop Helix (bHLH)"

Autore: Grafiati

Pubblicato: 10 dicembre 2022

Ultima modifica: 29 gennaio 2023

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Articoli di riviste sul tema "Basic Helix loop Helix (bHLH)"

1

Vervoort, Michel, e Valerie Ledent. "The Evolution of the Neural Basic Helix-Loop-Helix Proteins". Scientific World JOURNAL 1 (2001): 396–426. http://dx.doi.org/10.1100/tsw.2001.68.

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Basic Helix-Loop-Helix (bHLH) transcription factors control various aspects of the formation of the nervous system in the metazoans. In Drosophila some bHLH (such as the achaete-scuteatonal, and amos genes) act as proneural genes, directing ectodermal cells toward a neural fate. Their vertebrate orthologs, however, probably do not assume such a neural determination function, but rather control the decision made by neural precursors to generate neurons and not glial cells, as well as the progression of neuronal precursors toward differentiation into mature neurons. The proneural function of Drosophila bHLH genes may be an innovation that occurs in the evolutive lineage that leads to arthropods. In addition, although neural bHLH appear to be involved in the specification of neuronal identities, they probably do not confer by themselves neuronal type-specific properties to the cells. Rather, neural bHLH allow neural cells to correctly interpret specification and positional cues provided by other factors. Although bHLH genes are often expressed in complementary subsets of neural cells and/or expressed sequentially in those cells, the coding regions of the various neural bHLH appear largely interchangeable. We propose that the specific expression patterns have been acquired, following gene duplications, by subfunctional-ization, i.e., the partitioning of ancestral expression patterns among the duplicates and, by extension, we propose that subfunctionalization is a key process to understand the evolution of neural bHLH genes.

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2

Hudson, Karen A., e Matthew E. Hudson. "A Classification of Basic Helix-Loop-Helix Transcription Factors of Soybean". International Journal of Genomics 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/603182.

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The complete genome sequence of soybean allows an unprecedented opportunity for the discovery of the genes controlling important traits. In particular, the potential functions of regulatory genes are a priority for analysis. The basic helix-loop-helix (bHLH) family of transcription factors is known to be involved in controlling a wide range of systems critical for crop adaptation and quality, including photosynthesis, light signalling, pigment biosynthesis, and seed pod development. Using a hidden Markov model search algorithm, 319 genes with basic helix-loop-helix transcription factor domains were identified within the soybean genome sequence. These were classified with respect to their predicted DNA binding potential, intron/exon structure, and the phylogeny of the bHLH domain. Evidence is presented that the vast majority (281) of these 319 soybean bHLH genes are expressed at the mRNA level. Of these soybean bHLH genes, 67% were found to exist in two or more homeologous copies. This dataset provides a framework for future studies on bHLH gene function in soybean. The challenge for future research remains to define functions for the bHLH factors encoded in the soybean genome, which may allow greater flexibility for genetic selection of growth and environmental adaptation in this widely grown crop.

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3

Funato, Noriko. "Basic Helix-Loop-Helix (bHLH) Factors in Osteoblast Differentiation". Journal of Oral Biosciences 46, n. 3 (giugno 2004): 191–202. http://dx.doi.org/10.1016/s1349-0079(04)80002-1.

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4

Torres-Machorro, Ana Lilia. "Homodimeric and Heterodimeric Interactions among Vertebrate Basic Helix–Loop–Helix Transcription Factors". International Journal of Molecular Sciences 22, n. 23 (28 novembre 2021): 12855. http://dx.doi.org/10.3390/ijms222312855.

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The basic helix–loop–helix transcription factor (bHLH TF) family is involved in tissue development, cell differentiation, and disease. These factors have transcriptionally positive, negative, and inactive functions by combining dimeric interactions among family members. The best known bHLH TFs are the E-protein homodimers and heterodimers with the tissue-specific TFs or ID proteins. These cooperative and dynamic interactions result in a complex transcriptional network that helps define the cell’s fate. Here, the reported dimeric interactions of 67 vertebrate bHLH TFs with other family members are summarized in tables, including specifications of the experimental techniques that defined the dimers. The compilation of these extensive data underscores homodimers of tissue-specific bHLH TFs as a central part of the bHLH regulatory network, with relevant positive and negative transcriptional regulatory roles. Furthermore, some sequence-specific TFs can also form transcriptionally inactive heterodimers with each other. The function, classification, and developmental role for all vertebrate bHLH TFs in four major classes are detailed.

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5

Liu, Wu-yi, e Chun-jiang Zhao. "Genome-Wide Identification and Analysis of the Chicken Basic Helix-Loop-Helix Factors". Comparative and Functional Genomics 2010 (2010): 1–12. http://dx.doi.org/10.1155/2010/682095.

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Members of the basic helix-loop-helix (bHLH) family of transcription factors play important roles in a wide range of developmental processes. In this study, we conducted a genome-wide survey using the chicken (Gallus gallus) genomic database, and identified 104 bHLH sequences belonging to 42 gene families in an effort to characterize the chicken bHLH transcription factor family. Phylogenetic analyses revealed that chicken has 50, 21, 15, 4, 8, and 3 bHLH members in groups A, B, C, D, E, and F, respectively, while three members belonging to none of these groups were classified as ‘‘orphans’’. A comparison between chicken and human bHLH repertoires suggested that both organisms have a number of lineage-specific bHLH members in the proteomes. Chromosome distribution patterns and phylogenetic analyses strongly suggest that the bHLH members should have arisen through gene duplication at an early date. Gene Ontology (GO) enrichment statistics showed 51 top GO annotations of biological processes counted in the frequency. The present study deepens our understanding of the chicken bHLH transcription factor family and provides much useful information for further studies using chicken as a model system.

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Tian, Gang, Batu Erman, Haruhiko Ishii, Samudra S. Gangopadhyay e Ranjan Sen. "Transcriptional Activation by ETS and Leucine Zipper-Containing Basic Helix-Loop-Helix Proteins". Molecular and Cellular Biology 19, n. 4 (1 aprile 1999): 2946–57. http://dx.doi.org/10.1128/mcb.19.4.2946.

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ABSTRACT The immunoglobulin μ heavy-chain gene enhancer contains closely juxtaposed binding sites for ETS and leucine zipper-containing basic helix-loop-helix (bHLH-zip) proteins. To understand the μ enhancer function, we have investigated transcription activation by the combination of ETS and bHLH-zip proteins. The bHLH-zip protein TFE3, but not USF, cooperated with the ETS domain proteins PU.1 and Ets-1 to activate a tripartite domain of this enhancer. Deletion mutants were used to identify the domains of the proteins involved. Both TFE3 and USF enhanced Ets-1 DNA binding in vitro by relieving the influence of an autoinhibitory domain in Ets-1 by direct protein-protein associations. Several regions of Ets-1 were found to be necessary, whereas the bHLH-zip domain was sufficient for this effect. Our studies define novel interactions between ETS and bHLH-zip proteins that may regulate combinatorial transcription activation by these protein families.

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7

Hou, Quancan, Wei Zhao, Lu Lu, Linlin Wang, Tianye Zhang, Binbin Hu, Tingwei Yan et al. "Overexpression of HLH4 Inhibits Cell Elongation and Anthocyanin Biosynthesis in Arabidopsis thaliana". Cells 11, n. 7 (24 marzo 2022): 1087. http://dx.doi.org/10.3390/cells11071087.

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In plants, many basic helix-loop-helix (bHLH) transcription factors are involved in controlling cell elongation. Three bHLH proteins, PACLOBTRAZOL RESISTANCE1 (PRE1), Cryptochrome Interacting Basic Helix-loop-helix 5 (CIB5), and Arabidopsis ILI1 binding bHLH1 (IBH1) form a triantagonistic system that antagonistically regulates cell elongation in a competitive manner. In this study, we identified a new player, HLH4, related to IBH1, that negatively regulates cell elongation in Arabidopsis thaliana. Overexpression of HLH4 causes dwarf and dark green phenotypes and results in the downregulation of many key regulatory and enzymatic genes that participate in the anthocyanin biosynthetic pathway. HLH4 interacts with CIB5 and PRE1. By interacting with CIB5, HLH4 interferes with the activity of CIB5, and thus inhibiting the transcription of cell elongation-related genes regulated by CIB5, including EXPANSINS8 and 11 (EXP8 and EXP11) and indole-3-acetic acid 7 and 17 (IAA7 and IAA17). The interference of HLH4 on CIB5 is counteracted by PRE1, in which these bHLH proteins form a new tri-antagonistic system.

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Zuo, Zhi-Fang, Hyo-Yeon Lee e Hong-Gyu Kang. "Basic Helix-Loop-Helix Transcription Factors: Regulators for Plant Growth Development and Abiotic Stress Responses". International Journal of Molecular Sciences 24, n. 2 (11 gennaio 2023): 1419. http://dx.doi.org/10.3390/ijms24021419.

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Plant basic helix-loop-helix (bHLH) transcription factors are involved in many physiological processes, and they play important roles in the abiotic stress responses. The literature related to genome sequences has increased, with genome-wide studies on the bHLH transcription factors in plants. Researchers have detailed the functionally characterized bHLH transcription factors from different aspects in the model plant Arabidopsis thaliana, such as iron homeostasis and abiotic stresses; however, other important economic crops, such as rice, have not been summarized and highlighted. The bHLH members in the same subfamily have similar functions; therefore, unraveling their regulatory mechanisms will help us to identify and understand the roles of some of the unknown bHLH transcription factors in the same subfamily. In this review, we summarize the available knowledge on functionally characterized bHLH transcription factors according to four categories: plant growth and development; metabolism synthesis; plant signaling, and abiotic stress responses. We also highlight the roles of the bHLH transcription factors in some economic crops, especially in rice, and discuss future research directions for possible genetic applications in crop breeding.

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Chen, Meng, e John M. Lopes. "Multiple Basic Helix-Loop-Helix Proteins Regulate Expression of the ENO1 Gene of Saccharomyces cerevisiae". Eukaryotic Cell 6, n. 5 (9 marzo 2007): 786–96. http://dx.doi.org/10.1128/ec.00383-06.

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ABSTRACT The basic helix-loop-helix (bHLH) eukaryotic transcription factors have the ability to form multiple dimer combinations. This property, together with limited DNA-binding specificity for the E box (CANNTG), makes them ideally suited for combinatorial control of gene expression. We tested the ability of all nine Saccharomyces cerevisiae bHLH proteins to regulate the enolase-encoding gene ENO1. ENO1 was known to be activated by the bHLH protein Sgc1p. Here we show that expression of an ENO1-lacZ reporter was also regulated by the other eight bHLH proteins, namely, Ino2p, Ino4p, Cbf1p, Rtg1p, Rtg3p, Pho4p, Hms1p, and Ygr290wp. ENO1-lacZ expression was also repressed by growth in inositol-choline-containing medium. Epistatic analysis and chromatin immunoprecipitation experiments showed that regulation by Sgc1p, Ino2p, Ino4p, and Cbf1p and repression by inositol-choline required three distal E boxes, E1, E2, and E3. The pattern of bHLH binding to the three E boxes and experiments with two dominant-negative mutant alleles of INO4 and INO2 support the model that bHLH dimer selection affects ENO1-lacZ expression. These results support the general model that bHLH proteins can coordinate different biological pathways via multiple mechanisms.

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Chen, Yu, Peihuang Zhu, Fan Wu, Xiaofeng Wang, Jinfeng Zhang e Kongshu Ji. "Identification and Characterization of the Basic Helix-Loop-Helix Transcription Factor Family in Pinus massoniana". Forests 11, n. 12 (30 novembre 2020): 1292. http://dx.doi.org/10.3390/f11121292.

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The basic helix-loop-helix (bHLH) protein transcription factor family is the most widely distributed transcription factor family in eukaryotes. Members of this family play important roles in secondary metabolic biosynthesis, signal transduction, and plant resistance. Research on the bHLH family in animals is more extensive than that in plants, and members of the family in plants are classified according to the classification criteria for those in animals. To date, no research on the bHLH gene family in Pinus massoniana (Masson pine) has been reported. In this study, we identified 88 bHLH genes from four transcriptomes of Masson pine and performed bioinformatics analysis. These genes were divided into 10 groups in total. RT-PCR analysis revealed that the expression levels of the six genes increased under abiotic stress and hormone treatments. These findings will facilitate further studies on the functions of bHLH transcription factors.

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Tesi sul tema "Basic Helix loop Helix (bHLH)"

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Zhang, Fan. "Cloning and characterization of genes encoding basic helix loop helix (bHLH) proteins in Arabidopsis /". Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p9992950.

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Saarikettu, Juha. "Calcium regulation and functions of basic Helix-Loop-Helix transcription factors". Doctoral thesis, Umeå : Department of Molecular Biology, Umeå University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-537.

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Zhou, Shengli. "ZNF451 is a novel binding partner of the bHLH transcription factor E₁₂". Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=mco1225219996.

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Thesis (M.S.)--University of Toledo, 2008.
"In partial fulfillment of the requirements for the degree of Master of Science in Biomedical Sciences." Title from title page of PDF document. Bibliography: pages 49-62.

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Kele, Olovsson Julianna M. V. "Regulation of midbrain dopaminergic neuron development by Wnts, sFRPs and bHLH proteins/". Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-242-2/.

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Brockop, Mia. "Twist1 and Tcf12 interaction is critical for the development of the coronal suture in human and mouse". Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112195/document.

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Une craniosynostose est une pathologie caractérisée par la fusion prématurée d'une ou plusieurs sutures crâniennes. C'est un défaut de naissance assez fréquent (1/2500 naissances) qui résulte en une forme anormale du crâne et qui peut être accompagné d'une déficience mentale dans certains cas. Des mutations du gène TWIST1, qui encode un facteur de transcription basique Helix-Loop-Helix (bHLH) de classe II, causent le syndrome de Saethre-Chotzen qui est associé à une synostose de la suture coronale (El Ghouzzi et al. 1997; Howard et al. 1997). Un nouveau gène a récemment été découvert comme étant une nouvelle cause du syndrome Saethre-Chotzen ainsi que de synostose coronale asyndromique (Sharma, Fenwick, Brockop, et al., 2013): il s'agit du gène TCF12, qui encode un facteur de transcription bHLH de classe I.Nous démontrons qu'une reduction de l'expression génique de Twist1 et Tcf12 chez la souris cause une synostose coronale, et nous suggérons que les protéines bHLH Twist1 et Tcf12 forment des hétérodimères dont le dosage est critique pour le développement de la suture coronale.Nous nous concentrons aussi sur Twist1 et prouvons que son expression est requise dans les tissus dérivant du mésoderme ainsi que ceux dérivant des crêtes neurales pour le développement normal de la suture coronale.De plus, nous notons que dans la suture coronale, Twist1 exclut Notch2 afin de garder la suture ouverte, et beta-catenin joue un rôle dans la maintenance de l'ouverture de la suture en ciblant Jagged1 lors du développement de la suture coronale chez la souris.Enfin, nous mentionnons de nouveaux gènes qui pourraient avoir un impact sur le développement normal de la suture coronale: Aggrecan, Goosecoid, Gucy1a3 et Gucy1b3
Craniosynostosis, the premature fusion of one or more cranial sutures, is a common birth defect (1/2500 live births) that results in abnormalities in skull shape and sometimes in neurological deficiencies (Wilkie, 1997; Wilkie and Morriss-Kay, 2001). Mutations in TWIST1, which encodes a class II basic helix-loop-helix (bHLH) transcription factor, cause Saethre-Chotzen syndrome, associated with coronal synostosis (El Ghouzzi et al. 1997; Howard et al. 1997). We recently discovered a new craniosynostosis gene, TCF12, which encodes a class I bHLH transcription factor. Tcf12 causes.Saethre-Chotzen syndrome and asyndromic coronal synostosis. (Sharma, Fenwick, Brockop, et al., 2013). We show that a reduction in the dosage of Twist1 and Tcf12 in mouse causes coronal synostosis, and we suggest that the Twist1 and Tcf12 form heterodimers whose dosage is critical for coronal suture development. We also demonstrate that Twist1 is required in both neural-crest and mesoderm-derived tissues for the normal coronal suture development. Moreover, we show that in the coronal suture, Twist1 excludes Notch2 thus maintaining suture patency. and we show that beta-catenin also plays a role in the maintenance of suture patency by regulating Jagged1. Finally, we identified Aggrecan, Goosecoid, Gucy1a3 and Gucy1b3 as Twist1-regulated genes that could have an impact on the normal development of the coronal suture

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Rosenberg, Miriam Isaaca. "Diverse mechanisms employed by bHLH transcription factors to downregulate gene expression /". Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5016.

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Grove, Christian A. "A Multiparameter Network Reveals Extensive Divergence Between C. elegans bHLH Transcription Factors: A Dissertation". eScholarship@UMMS, 2009. https://escholarship.umassmed.edu/gsbs_diss/441.

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It has become increasingly clear that transcription factors (TFs) play crucial roles in the development and day-to-day homeostasis that all biological systems experience. TFs target particular genes in a genome, at the appropriate place and time, to regulate their expression so as to elicit the most appropriate biological response from a cell or multicellular organism. TFs can often be grouped into families based on the presence of similar DNA binding domains, and these families are believed to have expanded and diverged throughout evolution by several rounds of gene duplication and mutation. The extent to which TFs within a family have functionally diverged, however, has remained unclear. We propose that systematic analysis of multiple aspects, or parameters, of TF functionality for entire families of TFs could provide clues as to how divergent paralogous TFs really are. We present here a multiparameter integrated network of the activity of the basic helix-loop-helix (bHLH) TFs from the nematode Caenorhabditis elegans. Our data, and the resulting network, indicate that several parameters of bHLH function contribute to their divergence and that many bHLH TFs and their associated parameters exhibit a wide range of connectivity in the network, some being uniquely associated to one another, whereas others are highly connected to multiple parameter associations. We find that 34 bHLH proteins dimerize to form 30 bHLH dimers, which are expressed in a wide range of tissues and cell types, particularly during the development of the nematode. These dimers bind to E-Box DNA sequences and E-Box-like sequences with specificity for nucleotides central to and flanking those E-Boxes and related sequences. Our integrated network is the first such network for a multicellular organism, describing the dimerization specificity, spatiotemporal expression patterns, and DNA binding specificities of an entire family of TFs. The network elucidates the state of bHLH TF divergence in C. elegans with respect to multiple functional parameters and suggests that each bHLH TF, despite many molecular similarities, is distinct from its family members. This functional distinction may indeed explain how TFs from a single family can acquire different biological functions despite descending from common genetic ancestry.

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Mao, Weiming. "The role of bHLH gene ash1 in the developing chick eye". Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2009r/mao.pdf.

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Serre, Angéline. "Stratégies d'homogénéisation des populations de progéniteurs nerveux fœtaux humains dans une perspective de thérapie cellulaire du système nerveux central". Paris 6, 2007. https://tel.archives-ouvertes.fr/tel-00184239.

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Dans une perspective de médecine régénératrice, les cellules souches nerveuses et progénitrices fœtales humaines constituent indéniablement un des outils les plus adaptés au traitement des lésions du SNC et des maladies neurodégénératives. Jusqu’à présent, leur utilisation en thérapie cellulaire a eu recours à des populations hétérogènes composées à la fois de cellules immatures, de cellules en voie de différenciation et de cellules pleinement différenciées. Or des études récentes ont révélé l’intérêt de disposer de populations enrichies en un type cellulaire donné afin d’améliorer l’efficacité des greffes. Pour homogénéiser les populations et mieux cibler les pathologies, nous avons donc mis en œuvre deux stratégies. La première consiste à surexprimer, dans les cellules en culture, les gènes proneuraux à motif bHLH Ngn1, Ngn2, Ngn3 et Mash1 au travers de vecteurs lentiviraux dits « de différenciation ». Cette surexpression a permis d’orienter la différenciation des cellules majoritairement vers le lignage neuronal et également de spécifier des sous-types neuronaux. La seconde méthode utilise des vecteurs lentiviraux traceurs pour exprimer une protéine rapportrice sous le contrôle de promoteurs spécifiques des différents lignages du SNC en vue de leur sélection par tri cellulaire. Nous avons ainsi utilisé le promoteur Nestine pour les cellules immatures, le promoteur Synapsine pour les cellules neuronales et le promoteur GFAP pour les cellules astrocytaires. Si les promoteurs Synapsine et GFAP ont révélé une spécificité contestable, le promoteur Nestine, quant à lui, a permis de sélectionner une population enrichie à 81% en cellules nestine+. Ce travail s’inscrit dans un projet de plus grande envergure, qui a pour but d’évaluer les bénéfices de greffes de ces populations homogénéisées.

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Martin, Nathalie. "Studies on the regulation of the Napin napA promoter by ABI3, bZIP and bHLH transcription factors". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8713.

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Libri sul tema "Basic Helix loop Helix (bHLH)"

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Scott, Ian Cameron. Analysis of the regulation of basic helix-loop-helix transcription factor activity during murine trophoblast development: E-factor independent activity of Hand1 in trophoblast and other cell types. 2002.

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Capitoli di libri sul tema "Basic Helix loop Helix (bHLH)"

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Hill, Keith, Tom Baranowski, Walter Schmidt, Nicole Prommer, Michel Audran, Philippe Connes, Ramiro L. Gutiérrez et al. "Basic Helix-Loop-Helix (bHLH) proteins". In Encyclopedia of Exercise Medicine in Health and Disease, 116. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_2139.

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Suda, Kikuo, Masakazu Miyajima, Hajime Arai e Kiyoshi Sato. "Functional Roles of Basic Helix-Loop-Helix (bHLH) Transcription Factors in Proliferation and Differentiation of Neural Tube Cells". In Spina Bifida, 256–64. Tokyo: Springer Japan, 1999. http://dx.doi.org/10.1007/978-4-431-68373-5_54.

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Ohtsuka, Toshiyuki, e Ryoichiro Kageyama. "The Basic Helix-Loop-Helix Transcription Factors in Neural Differentiation". In Cell Cycle Regulation and Differentiation in Cardiovascular and Neural Systems, 15–34. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-60327-153-0_2.

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Bellefroid, Eric, e Jacob Souopgui. "Basic Helix-Loop-Helix Proneural Genes and Neurogenesis in Xenopus Embryos". In The Vertebrate Organizer, 151–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-10416-3_10.

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Poellinger, Lorenz. "Mechanism of Signal Transduction by the basic Helix-Loop-Helix Dioxin Receptor". In Inducible Gene Expression, Volume 1, 177–205. Boston, MA: Birkhäuser Boston, 1995. http://dx.doi.org/10.1007/978-1-4684-6840-3_6.

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Rossner, Moritz, Angelika Bartholomä, Markus Schwab e Klaus-Armin Nave. "Molecular cloning of new basic helix-loop-helix proteins from the mammalian central nervous system". In Molecular Signaling and Regulation in Glial Cells, 201–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60669-4_19.

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Kemp, Paul R., e James C. Metcalfe. "Expression of Basic Helix-Loop-Helix Proteins and Smooth Muscle Phenotype in the Adult Rat Aorta". In Developments in Cardiovascular Medicine, 237–44. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9321-2_20.

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Pinet, Valérie, Virginie Deleuze e Danièle Mathieu. "Emerging Role of the Two Related Basic Helix-Loop-Helix Proteins TAL1 and LYL1 in Angiogenesis". In Molecular Mechanisms of Angiogenesis, 149–67. Paris: Springer Paris, 2014. http://dx.doi.org/10.1007/978-2-8178-0466-8_7.

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Bharti, Kapil, Julien Debbache, Xin Wang e Heinz Arnheiter. "The Basic-Helix-Loop-Helix-Leucine Zipper Gene Mitf: Analysis of Alternative Promoter Choice and Splicing". In Methods in Molecular Biology, 237–50. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-738-9_14.

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"bHLH (basic helix‐loop‐helix protein)". In Encyclopedia of Genetics, Genomics, Proteomics and Informatics, 206. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_1708.

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Atti di convegni sul tema "Basic Helix loop Helix (bHLH)"

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Kang, Hyojin, Eunkyoo Oh, Giltsu Choi e Doheon Lee. "Genome-Wide DNA-Binding Specificity of PIL5, a Arabidopsis Basic Helix-Loop-Helix (bHLH) Transcription Factor". In 2008 IEEE International Conference on Bioinformatics and Biomedicine. IEEE, 2008. http://dx.doi.org/10.1109/bibm.2008.23.

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Chang, Antao, Yanan Chen, Wenzhi Shen, Ruifang Gao, Wei Zhou, Yunping Luo, Na Luo, Dwayne Stupack e Rong Xiang. "Abstract 1956: The basic helix-loop-helix (bHLH) transcriptional factor ATOH8 promotes the stemness of breast cancer cells via Oct4 and Nanog". In Proceedings: AACR Annual Meeting 2014; April 5-9, 2014; San Diego, CA. American Association for Cancer Research, 2014. http://dx.doi.org/10.1158/1538-7445.am2014-1956.

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Wang, Qishan, Qinglong Zhu e Yuchun Pan. "Regulatory Module Network of Basic/Helix-loop-helix Transcription Factors During Bovine Preimplantation Development in vivo". In 2010 WASE International Conference on Information Engineering (ICIE 2010). IEEE, 2010. http://dx.doi.org/10.1109/icie.2010.32.

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Mendoza-Milla, Criselda, Ana Lilia Torres Machorro, Gael Guitrón Castillo, Tatiana Sofía Rodríguez-Reyna, Joaquín Zúñiga Ramos e Ivette Buendía Roldán. "The basic helix-loop-helix transcription factor scleraxis (Scx) is overexpressed in systemic and lung fibrosing diseases". In ERS International Congress 2017 abstracts. European Respiratory Society, 2017. http://dx.doi.org/10.1183/1393003.congress-2017.pa895.

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Ai, Trinh Ngoc, e Bui Phu An Nam. "COMPARATIVE STUDIES ON TWO DIPLOID COTTON GENOMES REVEALS FUNCTIONAL DIFFERENCES OF BASIC HELIX-LOOP-HELIX PROTEINS IN ARABIDOPSIS". In NGHIÊN CỨU VÀ GIẢNG DẠY SINH HỌC Ở VIỆT NAM - BIOLOGICAL RESEARCH AND TEACHING IN VIETNAM. Nhà xuất bản Khoa học tự nhiên và Công nghệ, 2022. http://dx.doi.org/10.15625/vap.2022.0004.

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Scully, Kathleen M., Reyhaneh Lahmy, Heejung Kim, Andrew Lowy e Pamela Itkin-Ansari. "Abstract A55: Overexpression of the basic helix-loop-helix transcription factor, E47, promotes p16-independent senescence in established and patient-derived xenograft lines". In Abstracts: AACR Special Conference on Pancreatic Cancer: Advances in Science and Clinical Care; May 12-15, 2016; Orlando, FL. American Association for Cancer Research, 2016. http://dx.doi.org/10.1158/1538-7445.panca16-a55.

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Xu, Qing, Peiqing Ma, Chenfei Hu, Lechuang Chen, Liyan Xue, Zaozao Wang, Mei Liu, Hongxia Zhu, Ningzhi Xu e Ning Lu. "Abstract 732: Overexpression of the basic helix-loop-helix protein DEC1 induces cellular senescence and is related to better survival in esophageal squamous cell carcinoma". In Proceedings: AACR 103rd Annual Meeting 2012‐‐ Mar 31‐Apr 4, 2012; Chicago, IL. American Association for Cancer Research, 2012. http://dx.doi.org/10.1158/1538-7445.am2012-732.

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Lahmy, Reyhaneh, Nicholas Villarino, Jaco van Niekerk, Tarek Almaleh, SangWun Kim, Andrew Lowy e Pamela Itkin-Ansari. "Abstract B48: A novel high throughput screening platform identifies statins as inducers of basic Helix-Loop-Helix activity, p21 and growth arrest in pancreatic cancer cell and patient derived xenograft lines". In Abstracts: AACR Special Conference on Pancreatic Cancer: Advances in Science and Clinical Care; May 12-15, 2016; Orlando, FL. American Association for Cancer Research, 2016. http://dx.doi.org/10.1158/1538-7445.panca16-b48.

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9

Banes, A. J., J. Qi, J. M. Dmochowski, M. Tsuzaki, A. N. Banes, D. Bynum, S. Gomez e M. E. Wall. "Tenocytes, Phenotypes, Biomarkers and Functions: Roles in Bioartificial Tendons". In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53656.

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Abstract (sommario):

Tendons are designed to transmit the force of muscle contraction to bone, but they can also be positional or power structures. A sheath, where present and a surface paratenon are repositories for blood vessels and nerves. These structures penetrate inward to the epitenon, then endotenon and finally fascicle bundles. Each anatomic layer is replete with a tenocyte population distinct from the other group (Banes et al., 1998). Tenocyte surface cells (TSCs) differ from internal tenocytes (TIFs) that integrate with collagen fibrils and fascicles. TSCs are more stellate and spread, secrete fibronectin and PG4 (lubricin) and, as determined by gene array, have a different transcriptome from TIFs (Banes et al., 2004). TIFs are more spindle shaped, make collagen and are intimate with fibrils. Biomarkers for tendon are few compared to those for bone and cartilage, but recently, scleraxis (Scx), a basic helix-loop-helix transcription factor, and tenomodulin (TNMD), driven by Scx, have been identified with tendon development (Schweitzer et al., 2001). No concordance on TNMD function has been reached, but mature as well as developing TSCs and TIFs express TNMD. A TNMD KO mouse showed a mild collagen phenotype with larger, but less well organized fibrils, decreased cell proliferation, but no other problems (Docheva et al., 2005).

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Chen, Chang-Nian, Ji-Tian Han, Li Shao, Tien-Chien Jen e Yi-Hsin Yen. "Design of Equipment for Manufacturing Helically-Coiled Tubes and its Automatic Control System". In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37146.

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Abstract (sommario):

A simple but accurate method for manufacturing helically-coiled tubes was proposed, and the manufacturing equipment and its automatic control system were designed. The main geometric parameters of helically-coiled tubes are determined exactly based on the theorem “three given points determine a circle” and the definition of the helix angle of helically-coiled tubes. The finished equipment primarily consists of the mechanical noumenon and the automatic control system. In this design, three die wheels A, B and C made of wearable steel are used to adjust the positions of the raw materials in order to determine the product geometric parameters expected in advance. Three servo motors working with precision linear sliding rheostat and PID closed-loop control functions drive the three wheels mentioned above in different directions. The parameter e determining the base circle diameter of coil diameter is obtained by adjusting the position of wheel C up and down, and the parameter e’ determining the helix angle is obtained by adjusting the relative distance between wheel B and wheel A in the helical axis direction. The whole manufacture process is automatically controlled by a piece of software compiled by Visual Basic, including the processes of baiting and cutting, installing wheels and calibration, motor controlling, bending tubes, and product inspection etc. The design parameters for manufacturing helically-coiled tubes using SUS304 stainless steel or other similar materials are tube diameters of 6–50 mm, coil diameters of 100–700 mm and helical pitches of 10–50 mm. A total of fourteen finished products were selected as random samples for inspection. The result showed that the average working velocity was about 0.6 m/min; the root mean square errors (RMSE) of coil diameter and helical pitch of finished products were 3.85 mm and 0.97 mm, respectively; and the maximum roundness error of tubes was only 0.09 mm.

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