Ethyl pyruvate (EP) is a simple aliphatic ester derived from pyruvic acid which an endogenous metabolite. Although various studies have investigated the antioxidant and anti-inflammatory properties of EP, there has been only limited research into cytotoxic effect EP on cancer cells. The aim this study was to determine effects cells representing common types. purchased commercially intermediate ...

Oxoisoaporphine (OA) is a plant phototoxin isolated from Menispermaceae, however, its weak fluorescence and low water solubility impede it for theranostics. We developed here 4-hydroxyl-oxoisoaporphine (OHOA), which has good singlet oxygen-generating ability (0.06), strong (0.72) improved solubility. OHOA displays excellent cell imaging exhibits light-induced cytotoxicity against cancer cell. I...

The interactions of group B streptococci (GBS) with HeLa cells (an epithelial cell line) and MRC-5 cells (a fibroblastic cell line) were explored. A host-cell invasion assay using GBS strains from all serotypes revealed that GBS invaded HeLa cells to a greater extent than MRC-5 cells. One strain, a serotype V (NCS13), was highly invasive against HeLa cells. All strains were poorly invasive agai...

Newly synthesized histone H4 is deposited in a diacetylated isoform in a wide variety of organisms. In Tetrahymena a specific pair of residues, lysines 4 and 11, have been shown to undergo this modification in vivo. In this report, we demonstrate that the analogous residues, lysines 5 and 12, are acetylated in Drosophila and HeLa H4. These data strongly suggest that deposition-related acetylati...

Objective(s) Nonviral vector can be an attractive alternative to gene delivery in experimental study. In spite of some advantages in comparison with the viral vectors, there are still some limitations for efficiency of gene delivery in nonviral vectors. To determine the effective expression, the recombinant Escherichia coli lacZ genes were cloned into the different variants of pcDNA3.1 and the...

It has been reported that several conifers possess cytotoxic activities on some human tumor cell lines. Taxol as a natural cytotoxic compound has been extracted from this family. In a program to screen the cytotoxic effects of natural resources, male and female branchlets, fruit or bark of two different species of Iranian conifers were collected, identified and the cytotoxic effects of their hy...

Background: Cancer refers to the abnormal growth of cells and is still the most common cause of morbidity in world. The purpose of this study was to determine cytotoxicity effect of high molecular weight (HMWC) and low molecular weight of chitosan (LMWC) on three cancerous cell lines MCF-7, HeLa and Saos-2 with different histological origin. Methods: The anticancer property of two types of chi...

Two series of podophyllotoxin derivatives were synthesized by addition a 4?-sulfanilamide to or substitution 4?-amide into podophyllotoxin. Their cytotoxicities evaluated against four human cancer cell lines (A549, HeLa, MCF-7, and PC-3). Investigations the structure–activity relationship generalized. Derivative 9f (2-thienoylaminoepipodophyllotoxin) exhibited highest activity cells, inhibiting...

it has been reported that several conifers possess cytotoxic activities on some human tumor cell lines. taxol as a natural cytotoxic compound has been extracted from this family. in a program to screen the cytotoxic effects of natural resources, male and female branchlets, fruit or bark of two different species of iranian conifers were collected, identified and the cytotoxic effects of their hy...

background and aims: coxsackievirus b3 (cvb3) is the most common agent known to cause viral myocarditis. the viral genome encodes a single polyprotein that is cleaved to produce several proteins by virally encoded proteases. most of this proteolytic processing is catalyzed by a cysteine protease called 3c. the 3c protease plays major role in viral replication and cellular damage. methods: to un...