Chinese Journal of Pathology 2002;31(1):46-49

The effects of wild-type PTEN transfection on gene expressions of glioblastomas.

Xinxia TIAN 1 ; Jinfen WANG ; Jinxia ZHANG ; Juan DU ; Chung Sean PANG ; N G HO-KEUNG

Affiliations

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Country

China

Language

Chinese

Abstract

OBJECTIVETo study the effects of wild-type PTEN on gene expressions of glioblastomas.

METHODSGlioblastoma U87MG cells, which express inactivated PTEN, were transfected with wild-type PTEN constructs and stable transfected clones were selected. Then, cDNA microarray analyses were used to identify differentially expressed genes in wild-type PTEN transfected cells and control cells.

RESULTSTransfected wild-type PTEN inhibited the proliferation of U87MG. By cDNA microarray analyses, 89 cDNA clones were identified, which were differentially expressed in wild-type PTEN transfected cells and control cells. Among these genes, 13 genes were unknown and 76 genes were known genes, including glial fibrillary acidic protein, p21/WAF1, human TGF-beta inducible early protein, human DNA fragmentation factor 45 etc.

CONCLUSIONWild-type PTEN can affect the expressions of multiple genes, by which it regulates the proliferation, differentiation and apoptosis of glioblastomas.