We generated monoclonal scFv (single chain variable fragment) antibodies from an antibody phage display library towards three small synthetic peptides derived from the sequence of αs1-casein. Key difficulties for selection of scFv-phages against small peptides were addressed. Small peptides do not always bind efficiently to passive adsorption surfaces, and we developed a simple method to quanti...

Objective(s):This study aims at exploring cytotoxic activity of different peptides derived from VSVG protein against MCF-7 and MDA-MB-231 breast cancer cell lines and human embryonic kidney normal cell (HEK 293).    Materials and Methods: The ANTICP web server was used to predict anticancer peptides. The cytotoxic activity of peptides with high score (P26, P7) and low score (P19) was examined b...

Iron–sulfur clusters are ubiquitous cofactors that mediate central biological processes. However, despite their long history, these metallocofactors remain challenging to investigate when coordinated small (≤ six amino acids) oligopeptides in aqueous solution. In addition being often unstable vitro, iron–sulfur can be found a wide variety of forms with varied characteristics, which makes it dif...

Cell penetrating peptides (CPPs) and their synthetic analogs are of widespread interest. Here we report that guanidine rich small molecules can be potential membrane transporters in the presence of hydrophobic counteranion activators. To our knowledge, this is the first example of small molecules that mimic the anion-activated transport function of CPP.

background: antimicrobial peptides with relative length (2-100 amino acids) and positive charge (pure charge (+9)-(+2)) are amphiphilic that isolated from a wide range of animals. recently, these peptides have been known as a part of innate immune response. nowadays, more than 500 antimicrobial peptides from animals have been reported. objectives: the aim of this study was to evaluate the anti-...

Objective: Cancer has risen as the main cause of diseases with the highest rate of mortality in the world. Drugs used in cancer, usually demonstrate side effects on normal tissues. On the other hand, anticancer small peptides, effective on target tissues, should be safe on healthy organs, as being naturally originated compounds. In addition, they may have good pharmacokinetic properties. carnos...

With more than ten new FDA approvals since 2001, peptides are emerging as an important therapeutic alternative to small molecules. However, unlike small molecules, peptides on the market today are limited to extracellular targets. By contrast, cell-penetrating peptides (CPPs) can target intracellular proteins and also carry other cargoes (e.g. other peptides, small molecules or proteins) into t...

In the present study, we tested effect of small-molecular-weight redox molecules on collagen-induced platelet aggregation. We used N-acetylcysteine amide (AD4/NACA), form (NAC), a thiol antioxidant with improved lipophilicity and bioavailability compared to NAC, thioredoxin-mimetic (TXM) peptides, TXM-CB3, TXM-CB13, TXM-CB30. All compounds significantly inhibited aggregation induced by collagen...