Document Detail


Adenovirus-mediated transfer of caspase-3 with Fas ligand induces drastic apoptosis in U-373MG glioma cells.
MedLine Citation:
PMID:  10772815     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Impaired function of apoptosis-related genes is deeply involved in oncogenesis and the progression of cancers, and caspase-3 plays a critical role as an executioner of apoptosis. We introduced the caspase-3 gene via an adenovirus (Adv) vector into Alexander hepatoma cells, MCF-7 breast cancer cells, and U251 and U-373MG glioma cells which have different endogenous levels of caspase-3 expression. None of the cell lines underwent apoptosis by overexpression of caspase-3, indicating that induction of caspase-3 alone is not applicable for cancer gene therapy. Next, we investigated whether overexpression of caspase-3 could enhance Fas ligand-mediated apoptosis in these four cell lines. In U-373MG cells, which showed the highest level of expression of surface Fas among the four cell lines, coinfection of the Adv for caspase-3 (Adv-caspase-3) and the Adv for Fas ligand (Adv-FL) induced a remarkably increased degree of apoptosis compared with that induced by the single infection of either Adv-caspase-3 or Adv-FL. Similar results were obtained by cotreatment with anti-Fas antibody in U-373MG cells. These data suggest that when strong proapoptotic upstream stimuli are induced, the level of caspase-3 expression determines the degree of apoptosis in cancer cell lines. In conclusion, overexpression of caspase-3 alone did not induce apoptosis in cancer cells. Both a strong proapoptotic signal and a high expression of caspase-3 were required to induce drastic apoptosis in cancers. This strategy would be highly beneficial for selected cancer patients.
Authors:
N Shinoura; Y Muramatsu; Y Yoshida; A Asai; T Kirino; H Hamada
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental cell research     Volume:  256     ISSN:  0014-4827     ISO Abbreviation:  Exp. Cell Res.     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-05-18     Completed Date:  2000-05-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0373226     Medline TA:  Exp Cell Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  423-33     Citation Subset:  IM    
Copyright Information:
Copyright 2000 Academic Press.
Affiliation:
Department of Molecular Biotherapy Research, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170-8455, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adenoviridae / genetics*
Antigens, CD95 / genetics,  metabolism*
Apoptosis*
Breast Neoplasms
Carcinoma, Hepatocellular
Caspase 3
Caspases / genetics,  metabolism*
Enzyme Precursors / genetics,  metabolism*
Female
Gene Transfer Techniques*
Glioma
Humans
Immunoblotting
Ligands
Microscopy, Electron
Poly(ADP-ribose) Polymerases / metabolism
Tumor Cells, Cultured
Chemical
Reg. No./Substance:
0/Antigens, CD95; 0/Enzyme Precursors; 0/Ligands; EC 2.4.2.30/Poly(ADP-ribose) Polymerases; EC 3.4.22.-/CASP3 protein, human; EC 3.4.22.-/Caspase 3; EC 3.4.22.-/Caspases

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