AIM To explore kinetic changes in the gene expression profile during radiation-induced mitotic catastrophes. MATERIALS AND METHODS Gene expression changes were measured in HPV-infected HeLa Hep2 tumor cells following exposure to 5 Gy of ionizing radiation ((60)Co). Signaling pathways were explored and correlated to the biological responses linked to mitotic catastrophe. RESULTS Following ir...

A potent new enzyme-antibody conjugate system for amplifying cytotoxicity was tested in a well-defined model of hapten [2,4,6-trinitrophenyl (TNP)]-substituted tumor cells (HEp2) and purified anti-hapten antibody. Brief treatment of TNP-HEp2 cells with low concentrations (0.05 to 0.74 micrograms/ml) of antihapten antibody-alcohol dehydrogenase conjugate (Ab-ADH) followed by culture in complemen...

OBJECTIVE Virologic surveillance of poliomyelitis to monitor the transmission of wild polio virus in the community. STUDY AREA All major hospitals of Delhi and surrounding area. METHODS Stool samples were collected from 1221 cases of acute flaccid paralysis during 1992-1994 and were subjected to virus isolation on RD and HEp2 cell line. Viruses isolated were analyzed further by microneutral...

objective: nucleostemin (ns) is a recently identified gene that is expressed mainly in the nucleoli of neuronal, embryonic and mesenchymal stem cells which plays a role in their self renewal. over expression of this gene has been reported in several cancer cell lines tumoral tissues including gastric, hepatic and prostate cancer. in this study, we investigated the effects of suppression of this...

background : the development of chemoresistance represents a major obstacle in the successful treatment of cancers such as non-hodgkin’s lymphoma (nhl). with the recognition of important roles for both p53 and its more recently described paralog p73 in mediating the activity of anti-cancer drugs, there has been increasing recognition that cellular resistance to anthracyclines could and does a...

Factors predicting sensitivity to epidermal growth factor receptor (EGFR) blockade are largely unknown and new strategies are being sought to individualize cancer therapy. This study evaluated the variation in the expression of the early response gene c-fos as a distal effect of EGFR inhibition and its relationship to antitumor effects. The growth-inhibitory and c-fos-modulating effects of gefi...

Database systems are very important in any HEP2 experiment in the world. HEP community in LHC3 era is in transition from FORTRAN to C++ and from data streams to persistent objects. Together with that a new data management will be necessary, which would allow transition from “files and tapes” approach towards the access to data in form of objects by selection of their required physics contents. ...

background: adipose tissue has characteristics of an endocrine organ which releases a number of adipocyte-specific factors, known as adipocytokines.  it has recently suggested that adipocytokines might play a role in pathogenesis and progression of certain cancers, especially in gastric cancer.  this study has managed to investigate endogenous and/or exogenous expression of visfatin and resisti...

background: mehr-80 is a newly established adherent human large cell lung cancer cell line that has not been transfected until now. this study aims to define the optimal transfection conditions and effects of some critical elements for enhancing gene delivery to this cell line by utilizing different non-viral transfection procedures. methods: in the current study, calcium phosphate (cap), deae-...