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Journal articles on the topic 'Cyclodipeptides'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Harken, Lauritz, and Shu-Ming Li. "Modifications of diketopiperazines assembled by cyclodipeptide synthases with cytochrome P450 enzymes." Applied Microbiology and Biotechnology 105, no. 6 (2021): 2277–85. http://dx.doi.org/10.1007/s00253-021-11178-1.

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Abstract2,5-Diketopiperazines are the smallest cyclic peptides comprising two amino acids connected via two peptide bonds. They can be biosynthesized in nature by two different enzyme families, either by nonribosomal peptide synthetases or by cyclodipeptide synthases. Due to the stable scaffold of the diketopiperazine ring, they can serve as precursors for further modifications by different tailoring enzymes, such as methyltransferases, prenyltransferases, oxidoreductases like cyclodipeptide oxidases, 2-oxoglutarate-dependent monooxygenases and cytochrome P450 enzymes, leading to the formation

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2

Liwo, J. A., and J. Ciarkowski. "Conformation of cyclodipeptides." Journal of Molecular Structure: THEOCHEM 183, no. 3-4 (1989): 331–40. http://dx.doi.org/10.1016/0166-1280(89)80014-4.

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3

Budesinsky, Milos, Ivana Cisarova, Jaroslav Podlaha, et al. "Structures of cyclic dipeptides: an X-ray and computational study of cis- and trans-cyclo(Pip-Phe), cyclo(Pro-Phe) and their N-methyl derivatives." Acta Crystallographica Section B Structural Science 66, no. 6 (2010): 662–77. http://dx.doi.org/10.1107/s0108768110040243.

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The crystal structures of eight cyclodipeptides are determined, incorporating pipecolic acid or proline and phenylalanine or N-methyl phenylalanine. This set of structures allows the evaluation of the effects on molecular conformation and crystal packing of imino acid ring-size, relative configuration of the two amino acids, and N-methylation. In the non-methylated compounds, hydrogen-bonding interactions form one-dimensional motifs that dominate the packing arrangement. Three compounds have more than one symmetry-independent molecule in the asymmetric unit (Z′ > 1), indicative of a broad a

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4

Vinšová, Jarmila, Karel Kosař, and Evžen Kasafírek. "Synthesis and Antiproliferative Activity of Spirocyclic Cyclodipeptides, Derivatives of 1-Amino-1-cyclobutanecarboxylic Acid." Collection of Czechoslovak Chemical Communications 58, no. 12 (1993): 2987–93. http://dx.doi.org/10.1135/cccc19932987.

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A series of chiral spirocyclic cyclodipeptides of the general formula I was synthesized; the aim was to determine how the substitution of cyclobutane for cyclopentane in cyclo(-alanyl-1-amino-1-cyclopentanecarbonyl-) would influence the inhibition of the proliferative activity of the caudal morphogenic system (CMS) of Chick embryos. Spirocyclic cyclodipeptides Ia - Il were obtained by cyclization of linear dipeptides IIa - IIf, prepared by condensation of protected amino acids by DCCI method. The inhibition was investigated by the Chick Embryotoxicity Screening Test. The results show generally

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5

Lozano-González, M., B. Ovalle-Magallanes, M. Rangel-Grimaldo, et al. "Antidiabeticin vitroandin vivoevaluation of cyclodipeptides isolated fromPseudomonas fluorescensIB-MR-66e." New Journal of Chemistry 43, no. 20 (2019): 7756–62. http://dx.doi.org/10.1039/c9nj00645a.

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6

Long, Cong, Xiao-Ling Lu, Yun Gao, Bing-Hua Jiao, and Xiao-Yu Liu. "Description of aSulfitobacterStrain and Its Extracellular Cyclodipeptides." Evidence-Based Complementary and Alternative Medicine 2011 (2011): 1–6. http://dx.doi.org/10.1155/2011/393752.

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A marine bacterium M44 was separated from 30 m deep seawater in the East China Sea (26° 28.3′ N 122° 29.0′ E) in 2006. 16S rDNA gene sequence comparison showed that the strain M44 was a member of the genusSulfitobacterand highly similar to KMM 3554T. A series of experiments demonstrated that this strain M44 had many distinctive characteristics: its cells were gram-negative and mesophilic; its colonies were slightly yellowish, round, convex, and smooth; and it could grow at 10–28°C, pH 6.0–10.0, and in the presence of 0–12.5% (w/v) NaCl; the optimum growth conditions were 25°C and pH 7.0, and t

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7

Marchesan, J. T., T. Morelli, K. Moss, et al. "Association of Synergistetes and Cyclodipeptides with Periodontitis." Journal of Dental Research 94, no. 10 (2015): 1425–31. http://dx.doi.org/10.1177/0022034515594779.

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8

Milne, P. J., D. W. Oliver, and H. M. Roos. "Cyclodipeptides: Structure and conformation of cyclo(tyrosyl-prolyl)." Journal of Crystallographic and Spectroscopic Research 22, no. 6 (1992): 643–49. http://dx.doi.org/10.1007/bf01160980.

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9

Mishra, Awdhesh, Jaehyuk Choi, Seong-Jin Choi, and Kwang-Hyun Baek. "Cyclodipeptides: An Overview of Their Biosynthesis and Biological Activity." Molecules 22, no. 10 (2017): 1796. http://dx.doi.org/10.3390/molecules22101796.

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10

LIU, Chao, Xue-Qiong YANG, Zhong-Tao DING, et al. "Cyclodipeptides from the Secondary Metabolites of Two Novel Actinomycetes." Chinese Journal of Natural Medicines 9, no. 1 (2011): 78–80. http://dx.doi.org/10.1016/s1875-5364(11)60025-3.

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11

Calcagni, A., G. Lucente, F. Mazza, G. Pochetti, and D. Rossi. "Synthesis and structural studies of N-p-toluensulfonyl cyclodipeptides." Biopolymers 28, no. 1 (1989): 149–60. http://dx.doi.org/10.1002/bip.360280117.

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12

Le Grel, Philippe, Aikaterini Asprogenidi, Philippe Huez та ін. "Stereodynamics of Nitrogen Chiral Centers in aza-β3 -Cyclodipeptides". Chirality 25, № 6 (2013): 341–49. http://dx.doi.org/10.1002/chir.22160.

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13

Pospíšek, Jan, and Karel Bláha. "Peptides containing a neopentylglycine residue." Collection of Czechoslovak Chemical Communications 52, no. 2 (1987): 514–21. http://dx.doi.org/10.1135/cccc19870514.

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Neopentylglycine (III, 2-amino-4,4-dimethylpentanoic acid) was synthesized in both enantiomeric forms. Using the conventional methods of peptide synthesis, L-prolyl-L-neopentylglycylglycine amide (VII), the diastereoisomeric cyclodipeptides cyclo(L-neopentylglycyl-L-prolyl) (IXa) and cyclo(D-neopentylglycyl-L-prolyl) (IXb) and also N-acetyl-L-neopentylglycine methylamide (X) were prepared as models for further studies on physical properties and conformation of peptides.

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14

Delaforge, Marcel, Geneviève Bouillé, Maryse Jaouen, Christopher K. Jankowski, Christine Lamouroux, and Claude Bensoussan. "Recognition and oxidative metabolism of cyclodipeptides by hepatic cytochrome P450." Peptides 22, no. 4 (2001): 557–65. http://dx.doi.org/10.1016/s0196-9781(01)00364-3.

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15

Hedner, Erik, Martin Sjögren, Per-Anders Frändberg, et al. "Brominated Cyclodipeptides from the Marine SpongeGeodiabarrettias Selective 5-HT Ligands." Journal of Natural Products 69, no. 10 (2006): 1421–24. http://dx.doi.org/10.1021/np0601760.

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16

Scarel, Marco, and Silvia Marchesan. "Diketopiperazine Gels: New Horizons from the Self-Assembly of Cyclic Dipeptides." Molecules 26, no. 11 (2021): 3376. http://dx.doi.org/10.3390/molecules26113376.

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Cyclodipeptides (CDPs) or 2,5-diketopiperazines (DKPs) can exert a variety of biological activities and display pronounced resistance against enzymatic hydrolysis as well as a propensity towards self-assembly into gels, relative to the linear-dipeptide counterparts. They have attracted great interest in a variety of fields spanning from functional materials to drug discovery. This concise review will analyze the latest advancements in their synthesis, self-assembly into gels, and their more innovative applications.

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17

Wang, Xiaohan, Minyi Lin, Dan Xu, Daowan Lai, and Ligang Zhou. "Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides." Molecules 22, no. 12 (2017): 2069. http://dx.doi.org/10.3390/molecules22122069.

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18

Li, Xing-Yu, Yue-Hu Wang, Jun Yang, et al. "Acaricidal Activity of Cyclodipeptides from Bacillus amyloliquefaciens W1 against Tetranychus urticae." Journal of Agricultural and Food Chemistry 66, no. 39 (2018): 10163–68. http://dx.doi.org/10.1021/acs.jafc.8b03806.

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19

Ortiz-Castro, R., C. Diaz-Perez, M. Martinez-Trujillo, R. E. del Rio, J. Campos-Garcia, and J. Lopez-Bucio. "Transkingdom signaling based on bacterial cyclodipeptides with auxin activity in plants." Proceedings of the National Academy of Sciences 108, no. 17 (2011): 7253–58. http://dx.doi.org/10.1073/pnas.1006740108.

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20

Vinšová, Jarmila, Karel Kosař, and Evžen Kasafírek. "Spirocyclic Dipeptides of 1-Amino-1-cyclohexanecarboxylic Acid." Collection of Czechoslovak Chemical Communications 59, no. 1 (1994): 195–202. http://dx.doi.org/10.1135/cccc19940195.

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Spirocyclic cyclodipeptides with 1-amino-1-cyclohexanecarboxylic acid of the general formula cyclo(-Ach-A-), where A is Gly, L-Ala, D-Ala, L-Val, D-Val, L-Leu, D-Leu, D-Pgl, L-Phe or D-Phe, have been prepared by cyclization of the corresponding linear dipeptide methyl esters. The peptides cyclo(-L- or D-Ala-Ach-), cyclo(-L-Val-Ach-) and cyclo(-D-Leu-Ach-) show higher activity in the Chick Embryotoxicity Screening Test when compared with derivatives containing 1-amino-1-cyclopentanecarboxylic acid or 1-amino-1-cyclobutanecarboxylic acid.

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21

Yang, Xueqiong, Yabin Yang, Tianfeng Peng, et al. "A New Cyclopeptide from Endophytic Streptomyces sp. YIM 64018." Natural Product Communications 8, no. 12 (2013): 1934578X1300801. http://dx.doi.org/10.1177/1934578x1300801225.

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One new cyclopeptide, cyclo(L-Phe-L-Ala-L-Phe-Gly), named as vinaceuline (1) and three known cyclodipeptides, cyclo (Phe-Gly), cyclo (Phe-4-hydroxyl-Pro) and cyclo (Phe-Ile) were isolated from broth culture of endophytic Streptomyces YIM 64018 associated with Paraboea sinensis. The planar structure of the new compound was assigned on the basis of 1D and 2D NMR spectroscopic techniques, while the absolute configurations of the amino acid residues were determined by application of the advanced Marfey method. Cyclotetrapeptides are rarely found as Streptomycete metabolites.

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22

Hosoe, Tomoo, Kazuki Ishikawa, Daigo Wakana, et al. "Four Cyclodipeptides, Asnovolenins A-B and Asnovozines A-B, from Aspergillus novofumigatus." HETEROCYCLES 96, no. 6 (2018): 1053. http://dx.doi.org/10.3987/com-18-13902.

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23

Padilla, Laura Hernández, Pedro Eduardo Lázaro Mixteco, Lorena Martínez Alcantar, Alma Laura Díaz Pérez, and Jesús Campos García. "Anti‐proliferative Effect in HeLa Cells by Cyclodipeptides from Pseudomonas aeruginosa PAO1." FASEB Journal 34, S1 (2020): 1. http://dx.doi.org/10.1096/fasebj.2020.34.s1.05508.

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24

Wohlgemuth, Viola, Florian Kindinger, and Shu-Ming Li. "Convenient synthetic approach for tri- and tetraprenylated cyclodipeptides by consecutive enzymatic prenylations." Applied Microbiology and Biotechnology 102, no. 6 (2018): 2671–81. http://dx.doi.org/10.1007/s00253-018-8761-7.

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25

Huong, Doan Thi Mai. "ALKALOIDS AND CYCLOPEPTIDES FROM THE MARINE-DERIVED FUNGUS Aspergillus sp. M512." Vietnam Journal of Science and Technology 58, no. 5 (2020): 541. http://dx.doi.org/10.15625/2525-2518/58/5/15022.

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In the course of our screening program, the EtOAc extract of an Aspergillus sp. (strain M512) exhibited antimicrobial activities against three Gram Positive bacteria, and one yeast strain. This paper reported the isolation and structural elucidation of seven secondary metabolites including two alkaloids (1-2) and five cyclodipeptides (3-7) from culture broth of Aspergillus sp. M517. All isolated compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Except compound 1 and 2, with MIC values ranged from 32 to 128 μg/mL, five other comp

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26

Vázquez-Rivera, Dolores, Omar González, Jaquelina Guzmán-Rodríguez, et al. "Cytotoxicity of Cyclodipeptides fromPseudomonas aeruginosaPAO1 Leads to Apoptosis in Human Cancer Cell Lines." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/197608.

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Pseudomonas aeruginosais an opportunistic pathogen of plants and animals, which produces virulence factors in order to infect or colonize its eukaryotic hosts. Cyclodipeptides (CDPs) produced byP. aeruginosaexhibit cytotoxic properties toward human tumor cells. In this study, we evaluated the effect of a CDP mix, comprised of cyclo(L-Pro-L-Tyr), cyclo(L-Pro-L-Val), and cyclo(L-Pro-L-Phe) that were isolated fromP. aeruginosa, on two human cancer cell lines. Our results demonstrated that the CDP mix promoted cell death in cultures of the HeLa cervical adenocarcinoma and Caco-2 colorectal adenoca

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27

EL MAHDI, O., J. P. LAVERGNE, P. VIALLEFONT, M. AKSSIRA та A. SEDQUI. "ChemInform Abstract: Synthesis of Cyclodipeptides (VI) and (XII) from β-Pyrazolic Amino Acids." ChemInform 27, № 5 (2010): no. http://dx.doi.org/10.1002/chin.199605229.

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28

Kleinkauf, H., and H. Von Döhren. "Applications of peptide synthetases in the synthesis of peptide analogues." Acta Biochimica Polonica 44, no. 4 (1997): 839–47. http://dx.doi.org/10.18388/abp.1997_4389.

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Enzymatically formed peptides show positional variations as well as highly conserved amino acids. In the cases of gramicidin S, tyrocidine, linear gramicidins, enniatins, echinocandins and viridogrisein in vivo and in vitro studies indicate substrate selection at the level of amino acid activation as a major control step. Evidence for proof-reading steps beyond activation has been obtained in penicillin and cyclosporin biosynthesis. Activated substrate analogues may promote the formation of side products such as dipeptides and cyclodipeptides. Modifications of intermediates, such as N-methylat

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29

González-López, Omar, Brenda Berenice Palacios-Nava, César Arturo Peña-Uribe, et al. "Growth promotion in Arabidopsis thaliana by bacterial cyclodipeptides involves the TOR/S6K pathway activation." Journal of Plant Physiology 257 (February 2021): 153343. http://dx.doi.org/10.1016/j.jplph.2020.153343.

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30

Malit, Jessie James Limlingan, Wenchao Liu, Aifang Cheng, Subhasish Saha, Ling-Li Liu, and Pei-Yuan Qian. "Global Genome Mining Reveals a Cytochrome P450-Catalyzed Cyclization of Crownlike Cyclodipeptides with Neuroprotective Activity." Organic Letters 23, no. 17 (2021): 6601–5. http://dx.doi.org/10.1021/acs.orglett.1c01022.

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31

Arena, Giuseppe, Giuseppe Impellizzeri, Giuseppe Maccarrone, Giuseppe Pappalardo, Domenico Sciotto, and Enrico Rizzarelli. "Thermodynamic and 1H NMR study of proton complex formation of histidine-containing cyclodipeptides in aqueous solution." Journal of the Chemical Society, Perkin Transactions 2, no. 3 (1992): 371. http://dx.doi.org/10.1039/p29920000371.

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32

Zhang, Yi, Xiao-Ming Li, Yan Feng та Bin-Gui Wang. "Phenethyl-α-pyrone derivatives and cyclodipeptides from a marine algous endophytic fungus Aspergillus niger EN–13". Natural Product Research 24, № 11 (2009): 1036–43. http://dx.doi.org/10.1080/14786410902940875.

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33

Yu, Huili, and Shu-Ming Li. "Two Cytochrome P450 Enzymes from Streptomyces sp. NRRL S-1868 Catalyze Distinct Dimerization of Tryptophan-Containing Cyclodipeptides." Organic Letters 21, no. 17 (2019): 7094–98. http://dx.doi.org/10.1021/acs.orglett.9b02666.

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34

Li, Hongxia, Yan Qiu, Canxiong Guo, et al. "Pyrroloindoline cyclization in tryptophan-containing cyclodipeptides mediated by an unprecedented indole C3 methyltransferase from Streptomyces sp. HPH0547." Chemical Communications 55, no. 58 (2019): 8390–93. http://dx.doi.org/10.1039/c9cc03745d.

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35

VINSOVA, J., K. KOSAR, and E. KASAFIREK. "ChemInform Abstract: Synthesis and Antiproliferative Activity of Spirocyclic Cyclodipeptides, Derivatives of 1-Amino-1-cyclobutane carboxylic Acid." ChemInform 25, no. 14 (2010): no. http://dx.doi.org/10.1002/chin.199414269.

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36

Ortiz-Castro, Randy, Jesús Campos-García, and José López-Bucio. "Pseudomonas putida and Pseudomonas fluorescens Influence Arabidopsis Root System Architecture Through an Auxin Response Mediated by Bioactive Cyclodipeptides." Journal of Plant Growth Regulation 39, no. 1 (2019): 254–65. http://dx.doi.org/10.1007/s00344-019-09979-w.

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37

Corona-Sánchez, Iván, Cesar Arturo Peña-Uribe, Omar González-López, Javier Villegas, Jesus Campos-Garcia, and Homero Reyes de la Cruz. "Cyclodipeptides from Pseudomonas aeruginosa modulate the maize (Zea mays L.) root system and promote S6 ribosomal protein kinase activation." PeerJ 7 (August 28, 2019): e7494. http://dx.doi.org/10.7717/peerj.7494.

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Background Pseudomonas aeruginosa is an opportunistic and pathogenic bacterium with the ability to produce cyclodipeptides (CDPs), which belong to a large family of molecules with important biological activities. Excessive amounts of CDPs produced by Pseudomonas strains can activate an auxin response in Arabidopsis thaliana and promote plant growth. Target of rapamycin (TOR) is an evolutionarily conserved eukaryotic protein kinase that coordinates cell growth and metabolic processes in response to environmental and nutritional signals. Target of rapamycin kinase phosphorylates various substrat

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38

Ołdziej, St, P. Dokurno, B. Liberek, A. S. Kołodziejczyk, J. Ciarkowski, and M. Gdaniec. "Conformation of cyclodipeptides. factor analysis: a convenient tool for simplifying conformational studies of condensed poly-ring systems: prolyltype cyclopeptides." Journal of Molecular Structure: THEOCHEM 204 (January 1990): 301–24. http://dx.doi.org/10.1016/0166-1280(90)85082-x.

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39

Wu, Liming, Huijun Wu, Lina Chen, Hongyue Zhang, and Xuewen Gao. "Induction of systemic disease resistance inNicotiana benthamianaby the cyclodipeptides cyclo (l-Pro-l-Pro) and cyclo (d-Pro-d-Pro)." Molecular Plant Pathology 18, no. 1 (2016): 67–74. http://dx.doi.org/10.1111/mpp.12381.

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40

Hernández-Padilla, Laura, Dolores Vázquez-Rivera, Luis A. Sánchez-Briones, et al. "The Antiproliferative Effect of Cyclodipeptides from Pseudomonas aeruginosa PAO1 on HeLa Cells Involves Inhibition of Phosphorylation of Akt and S6k Kinases." Molecules 22, no. 6 (2017): 1024. http://dx.doi.org/10.3390/molecules22061024.

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41

Bláha, Karel, Miloš Buděšínský, Ivo Frič, Jan Pospíšek, and Jindřich Symerský. "Conformation of diastereoisomeric cyclo(neopentylglycyl-prolyls): NMR, X-ray, and CD studies." Collection of Czechoslovak Chemical Communications 52, no. 9 (1987): 2295–308. http://dx.doi.org/10.1135/cccc19872295.

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Conformation of diastereoisomeric cyclo(L-neopentylglycyl-L-prolyl) (IV) and cyclo(D-neopentylglycyl-L-prolyl) (VIII) in solution was studied by 1H and 13C NMR spectroscopy. Both compounds have approximately the same conformation of the bicyclic moiety in which the 2,5-piperazinedione ring exists in the boat form with pseudoaxial proline H(α) atom, and the proline ring is in the C(γ)-exo conformation. Rotation of the neopentyl side chain is markedly hindered. In the trans-derivative VIII the side chain occupies a pseudoaxial position with staggered rotamer about the C(α)-C(β) bond, the tert-bu

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42

Martínez-Carranza, Enrique, Gabriel Y. Ponce-Soto, Alma L. Díaz-Pérez, Erasmo Cadenas, Valeria Souza, and Jesús Campos-García. "Involvement of cyclodipeptides in the competition of bacterial communities in the oligotrophic Churince aquatic system of Cuatro Ciénegas Basin dominated by Gammaproteobacteria." Extremophiles 22, no. 1 (2017): 73–85. http://dx.doi.org/10.1007/s00792-017-0978-3.

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43

Wagger, Jernej, Uroš Grošelj, Anton Meden, Jurij Svete, and Branko Stanovnik. "Synthesis of (S,Z)-3-[(1H-indol-3-yl)methylidene]hexahydropyrrolo[1,2-a]pyrazin-4(1H)-one: an alternative, enaminone based, route to unsaturated cyclodipeptides." Tetrahedron 64, no. 12 (2008): 2801–15. http://dx.doi.org/10.1016/j.tet.2008.01.045.

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44

Sheinblatt, M. "NMR studies on the conformation of aromatic cyclodipeptides with two non-identical L-aromatic amino-acid residues in solution: cyclo-[L-5(MeO)Trp-L-Tyr(Me)]." Journal of the Chemical Society, Perkin Transactions 2, no. 1 (1990): 127. http://dx.doi.org/10.1039/p29900000127.

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45

Ayi, A. I., M. L. Martos-Alcaniz, R. Condom, P. R. T. Frogier, and R. Guedj. "Fluorinated amino acids and peptides. Synthesis of 3,3-difluoro-2-amino acids, peptides and cyclodipeptides incorporating 3,3-difluoro-2-aminobutyric acid or 3,3-difluorophenylalanine residues in their structures." Journal of Fluorine Chemistry 55, no. 1 (1991): 13–28. http://dx.doi.org/10.1016/s0022-1139(00)81249-x.

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46

Hernández-Padilla, Laura, Homero Reyes de la Cruz, and Jesús Campos-García. "Antiproliferative effect of bacterial cyclodipeptides in the HeLa line of human cervical cancer reveals multiple protein kinase targeting, including mTORC1/C2 complex inhibition in a TSC1/2-dependent manner." Apoptosis 25, no. 9-10 (2020): 632–47. http://dx.doi.org/10.1007/s10495-020-01619-z.

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47

Lanza, Valeria, Danilo Milardi, Giuseppe Di Natale, and Giuseppe Pappalardo. "Repurposing of Copper(II)-chelating Drugs for the Treatment of Neurodegenerative Diseases." Current Medicinal Chemistry 25, no. 4 (2018): 525–39. http://dx.doi.org/10.2174/0929867324666170518094404.

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Background: There is mounting urgency to find new drugs for the treatment of neurodegenerative disorders. A large number of reviews have exhaustively described either the molecular or clinical aspects of neurodegenerative diseases such as Alzheimer's (AD) and Parkinson's (PD). Conversely, reports outlining how known drugs in use for other diseases can also be effective as therapeutic agents in neurodegenerative diseases are less reported. This review focuses on the current uses of some copper(II) chelating molecules as potential drug candidates in neurodegeneration. Methods: Starting from the

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48

Turkez, Hasan, Ivana Cacciatore, Mehmet Enes Arslan, et al. "Histidyl-Proline Diketopiperazine Isomers as Multipotent Anti-Alzheimer Drug Candidates." Biomolecules 10, no. 5 (2020): 737. http://dx.doi.org/10.3390/biom10050737.

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Cyclic dipeptides administered by both parenteral and oral routes are suggested as promising candidates for the treatment of neurodegeneration-related pathologies. In this study, we tested Cyclo (His-Pro) isomers (cHP1-4) for their anti-Alzheimer potential using a differentiated human neuroblastoma cell line (SH-SY5Y) as an Alzheimer’s disease (AD) experimental model. The SH-SY5Y cell line was differentiated by the application of all-trans retinoic acid (RA) to obtain mature neuron-like cells. Amyloid-beta 1-42 (Aβ1-42) peptides, the main effector in AD, were administered to the differentiated

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49

Harding, Christopher J., Emmajay Sutherland, Jane G. Hanna, Douglas R. Houston, and Clarissa M. Czekster. "Bypassing the requirement for aminoacyl-tRNA by a cyclodipeptide synthase enzyme." RSC Chemical Biology 2, no. 1 (2021): 230–40. http://dx.doi.org/10.1039/d0cb00142b.

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AYI, A. I., M. L. MARTOS-ALCANIZ, R. CONDOM, P. R. T. FROGIER, and R. GUEDJ. "ChemInform Abstract: Fluorinated Amino Acids and Peptides. Synthesis of 3,3-Difluoro-2- amino Acids, Peptides, and Cyclodipeptides Incorporating 3,3-Difluoro- 2-aminobutyric Acid or 3,3-Difluorophenylalanine Residues in Their Structures." ChemInform 24, no. 3 (2010): no. http://dx.doi.org/10.1002/chin.199303246.

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