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Antifungal and antitumor models of bioactive protective peptides Anais da ABC (AABC)
Rodrigues,Elaine G.; Dobroff,Andrey S.; Taborda,Carlos P.; Travassos,Luiz R..
Peptides are remarkably reactive molecules produced by a great variety of species and able to display a number of functions in uni-and multicellular organisms as mediators, agonists and regulating substances. Some of them exert cytotoxic effects on cells other than those that produced them, and may have a role in controlling subpopulations and protecting certain species or cell types. Presently, we focus on antifungal and antitumor peptides and discuss a few models in which specific sequences and structures exerted direct inhibitory effects or stimulated a protective immune response. The killer peptide, deduced from an antiidiotypic antibody, with several antimicrobial activities and other Ig-derived peptides with cytotoxic activities including antitumor...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioactive peptides; Paracoccidioides brasiliensis; Tumor cells; Killer peptide; Melanoma; Apoptosis.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300015
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Di and tripeptides from marine sources can target adipogenic process and contribute to decrease adipocyte number and functions ArchiMer
Ben Henda, Yesmine; Laamari, Mariem; Lanneluc, Isabelle; Travers, Marie-agnes; Agogue, Helene; Arnaudin, Ingrid; Bridiau, Nicolas; Maugard, Thierry; Piot, Jean-marie; Sannier, Frederic; Bordenave-juchereau, Stephanie.
The effect of 11 marine-derived cryptides was investigated on proliferation, differentiation and maturation of human white pre-adipocytes (HWP). They were all formerly identified as potent Angiotensin-Converting-Enzyme inhibitors.Val-Trp (VW),Val-Tyr (VY), Lys-Tyr (KY), Lys-Trp (KW), Ile-Tyr (IY), Ala-Pro (AP),Val-Ile-Tyr (VIY), Leu-Lys-Pro (LKP), Gly-Pro-Leu (GPL), Ala-Lys-Lys (AKK) and Val-Ala-Pro (VAP) were previously found in fish products and coproducts as well as other marine resources like wakame. Treatment with AP, VAP and AKK greatly affected viability of HWP during the proliferation period while KW and VW treatment reduced the number of viable cells during the differentiation stage. A GPL and IY incubation during the differentiation stage allowed...
Tipo: Text Palavras-chave: Bioactive peptides; Obesity; Human white pre-adipocytes'; Proliferation; Differentiation; Adipocyte differentiation markers.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00269/38014/36308.pdf
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Effects of hydrolysis and digestion in vitro on the activity of bovine plasma hydrolysates as inhibitors of the angiotensin I converting enzyme BABT
Gómez Sampedro,Leidy Johanna; Zapata Montoya,José Edgar.
The angiotensin I-converting enzyme (ACE) inhibiting activity of bovine plasma hydrolyzates obtained by Alcalase 2.4 L at different degrees of hydrolysis (DH) was evaluated. For the evaluation of ACE inhibition (ACEI), Hippuryl-His-Leu was used as substrate and the amount of hippuric acid liberated by non-inhibiting ACE was determined by spectrophotometry at 228 nm. The results showed that the enzymatic hydrolysis increased the ACEI activity as compared with the un-hydrolyzed plasma. The highest activity was onbtained with a DH of 6.7%. The peptide fractions with the maximum activity were isolated using ultrafiltration membranes, ion exchange chromatography and high performance liquid chromatography on reverse phase (RP-HPLC). The fraction with highest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Enzymatic hydrolysis; Bioactive peptides; Angiotensin I-converting enzyme inhibitors; Peptide sequence.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000300012
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