the aim of our work was to compare cytotoxic and membrane-damaging effects of o. majorana l. essential oil and linalool on hep g2 and to investigate their possible protective (antioxidant) effects against h2o2 induced membrane damage. the oils were investigated by gc and gc-ms and antioxidant activity was evaluated by dpph and -carotene–linoleic acid assays. assessment of cell viability was ma...

The site of synthesis of alpha 2-plasmin inhibitor (alpha 2-PI), a physiologic inhibitor of plasmin, is not known with certainty. We have studied the production and secretion of alpha 2-PI by three established human liver cell lines derived from hepatocellular carcinoma and hepatoblastoma (Hep G2, Hep 3B, and PLC/PRF/5). As measured by a specific radioimmunoassay, the titer of alpha 2-PI increa...

OBJECTIVES In recent years, polypropyleneimine (PPI) dendrimers have attracted great interest as non-viral gene delivery systems because of their attractive features including highly branched architecture with number of reactive end groups. However, without being structurally modified, they are not efficient gene carriers. In the present study, generation 2 and 3 (G2 and G3) of PPI dendrimers w...

Gametocytes are nonreplicative sexual forms that mediate malaria transmission to a mosquito vector. They are generated from asexual blood-stage parasites that proliferate in the circulation. However, little is known about how this transition is genetically regulated. Here, we report that an Apetala2 (AP2) family transcription factor, AP2-G2, regulates this transition as a transcriptional repres...

In this study, we synthesized dendrimer-functionalized laponite (LAP) nanodisks for loading and delivery of anticancer drug doxorubicin (DOX). Firstly, LAP was modified with silane coupling agents and succinic anhydride to render abundant carboxyl groups on the surface of LAP. Then, poly(amidoamine) (PAMAM) dendrimer of generation 2 (G2) were conjugated to form LM-G2 nanodisks. Anticancer drug ...

new approach of breast cancer therapy is developed toward combination therapy with agent that have a specific molecular target. our previous study showed that citrus aurantifolia lime peels ethanolic extract (cpe) increased the sensitivity of mcf-7 cells againts doxorubicin. this study aims to observe the mechanism of combination cpe and doxorubicin in cell cycle modulation and apoptosis on mcf...

A tumorigenic human hepatoma cell line, Hep G2, has been shown to have high steady-state levels of c-myc transcripts compared to normal human liver. We have now characterized c-myc expression in Hep G2 cells with regard to message stability, gene rearrangements, gene amplification, chromosomal translocations, promoter utilization, and the effects of protein synthesis inhibitors. We have determi...

The bioorganometallic III containing trimethylene chain between ferrocene and resveratrol (3,5,4'-trihydroxystilbene, RSV) moieties connected via ester bond has been synthesized. The novel bioconjugate was characterized using IR and NMR (1H, 13C, COSY, NOESY, HMBC) spectroscopy, ESI-MS and HRMS. The RSV and ferrocene-RSV conjugate III were screened in vitro for their inhibitory effects against ...

We describe the synthesis and biological evaluation of C-glycosyl chalcone analogues of aspalathin. The DPPH radical scavenging method was used to detect their antioxidant activity and an MTT colorimetric assay was employed to test the anticancer activity against Hep-G2 liver carcinoma cells and MCF-7 human breast carcinoma cells. The antioxidant ability between C-furanosides and C-pyranosides ...

Abstract A new set of 5‐bromoindole‐2‐carboxylic acid hydrazone derivatives were synthesized and studied as potential inhibitors VEGFR‐2 tyrosine kinase (TK). Various physical (color, melting point, etc.) spectroscopic (IR, 1 H NMR, 13 C MS) methods used to determine the structure novel 5‐bromoindole derivatives. molecular docking study revealed that 5‐bromo‐N′‐(4‐hydroxy or 4‐chloro 4‐(dimethy...