COEXPRESSION OF PLATELET-DERIVED GROWTH FACTOR-B (PDGF) CHAIN AND PDGF-B-TYPE RECEPTOR IN HUMAN GLIOMAS

被引:27
作者
MAURO, A [1 ]
BULFONE, A [1 ]
TURCO, E [1 ]
SCHIFFER, D [1 ]
机构
[1] UNIV TURIN,DEPT GENET BIOL & MED CHEM,I-10126 TURIN,ITALY
关键词
GLIOMAS; ONCOGENES; ENDOTHELIAL CELLS;
D O I
10.1007/BF00263184
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
In this study we analyzed the expression of mRNA for PDGF-B and PDGF B-type receptor (PDGFrecB) in 42 biopsy specimens from human astrocytic gliomas and other brain tumors. All gliomas expressed PDGF-B mRNA at higher levels than found in peritumoral and normal nervous tissues. Levels of PDGF-B transcripts correlated strongly with those of mRNA for glial fibrillary acidic protein. Thus, the production of PDGF-B mRNA may be attributed mainly to tumoral glial cells. PDGFrecB transcripts were found in 24 out of 29 gliomas, in agreement with the hypothesis of an autocrine growth stimulation in these tumors. Moreover, mean levels of PDGFrecB expression were higher in glioblastomas than in astrocytomas and over 30-fold higher in meningiomas than in gliomas. This suggests that in gliomas PDGFrecB can be expressed also by vascular elements, in agreement with the hypothesized existence of a paracrine mechanism that may be responsible for the endothelial hyperplasias.
引用
收藏
页码:432 / 436
页数:5
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