Fas-independent apoptosis in T-cell tumours induced by the CD2-myc transgene

被引：9

作者：

Cameron, ER ^{[1
]}

Morton, J ^{[1
]}

Johnston, CJ ^{[1
]}

Irvine, J ^{[1
]}

Bell, M ^{[1
]}

Onions, DE ^{[1
]}

Neil, JC ^{[1
]}

Campbell, M ^{[1
]}

Blyth, K ^{[1
]}

机构：

[1] Univ Glasgow, Sch Vet, Mol Oncol Lab, Glasgow G61 1QH, Lanark, Scotland

来源：

CELL DEATH AND DIFFERENTIATION | 2000年 / 7卷 / 01期

基金：

英国惠康基金;

关键词：

Fas; lpr; myc; T-cell; thymus; lymphoma;

D O I：

10.1038/sj.cdd.4400630

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Depending on the cellular context, the Myc oncoprotein is capable of promoting cell proliferation or death by apoptosis, These observations suggest that apoptosis in response to deregulated gene expression may represent a natural brake to tumour development. The pathways by which Myc induces apoptosis are as yet poorly characterised although recent observations on rat fibroblasts over-expressing Myc have demonstrated a requirement for the Fas pathway. To investigate the role of Fas in Myc-induced lymphomagenesis we backcrossed CD2-myc mice onto an lprbackground, Rates of tumour development and phenotypic properties, including levels of apoptosis were indistinguishable from CD2-myc controls. Further, tumour cell lines derived from mice expressing a regulatable form of Myc showed inducible apoptosis at similar rates regardless of their lpr genotype, These results show that activation of c-myc and loss of Fas do not collaborate in T lymphoma development and that Myc-induced apoptosis in T-cells occurs by Fas-independent pathways.

引用

页码：80 / 88

页数：9