[Up regulation of phenylacetate to glioma homeobox gene expression].
OBJECTIVE
Even though phenylacetate (PA) bas been shown to inhibit the growth and induce differentiation in rat C6 glioma cell line, its mechanisms are still poorly understood. This study is aimed to identify which Hox gene is related to glioma and to observe the change in expression on mRNA level as treated by phenylasetate.


METHODS
Twenty-two kinds of Hox gene were divided into 3 groups according to their primer sequence. Semiquantitative reverse transcription- polymerase chain reaction (RT-PCR) was used to investigate the mRNA expression of Hox gene groups and some Hox gene in rat C6 glioma cell line following differentiation induced by PA. The level of Hox gene expression was expressed as ratio expression rate (RER) of Hox gene/beta-actin according to computer image analysis and the difference between C6 cells and PA treated C6 cells was analyzed by student t-test.


RESULTS
It was found that Hox genes matching to primers P2 were mildly expressed in C6 cells and the expression of HoxB2 mRNA was significantly up-regulated in PA treated C6 cells (P < 0.001).


CONCLUSIONS
The weak expression of HoxB2 may be involved in glioma origin and the mechanisms of PA action are correlated with transcription process in the glioma cells.
Tian
Yu
Y
Department of Neurosurgery, China-Japan Friendship Hospital, Jilin University, Changchun 130031, China.
Yang
Chaohua
C
Zhao
Conghai
C
D000818:Animals; D000964:Antimetabolites, Antineoplastic / Q000494:pharmacology*; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D005801:Genes, Homeobox / Q000235:genetics*; D005910:Glioma / Q000235:genetics* / Q000473:pathology; D010648:Phenylacetates / Q000494:pharmacology*; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics / Q000378:metabolism; D051381:Rats; D014407:Tumor Cells, Cultured; D015854:Up-Regulation / Q000187:drug effects
D000964:Antimetabolites, Antineoplastic; D010648:Phenylacetates; D012333:RNA, Messenger; C025136:phenylacetic acid