共 30 条
Bioinformatic identification of potential autocrine signaling loops in cancers from gene expression profiles
被引:97
作者:

Graeber, TG
论文数: 0 引用数: 0
h-index: 0
机构: Univ Calif Los Angeles, Howard Hughes Med Inst, Lab Struct Biol & Mol Med, Dept Energy, Los Angeles, CA 90095 USA

Eisenberg, D
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Calif Los Angeles, Howard Hughes Med Inst, Lab Struct Biol & Mol Med, Dept Energy, Los Angeles, CA 90095 USA Univ Calif Los Angeles, Howard Hughes Med Inst, Lab Struct Biol & Mol Med, Dept Energy, Los Angeles, CA 90095 USA
机构:
[1] Univ Calif Los Angeles, Howard Hughes Med Inst, Lab Struct Biol & Mol Med, Dept Energy, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA
[3] Univ Calif Los Angeles, Dept Biol Chem, Los Angeles, CA 90095 USA
基金:
美国国家卫生研究院;
关键词:
D O I:
10.1038/ng755
中图分类号:
Q3 [遗传学];
学科分类号:
071007 ;
090102 ;
摘要:
Many biological signaling pathways involve autocrine ligand-receptor loops; misregulation of these signaling loops can contribute to cancer phenotypes. Here we present an algorithm for detecting such loops from gene expression profiles. Our method is based on the hypothesis that for some autocrine pathways, the ligand and receptor are regulated by coupled mechanisms at the level of transcription, and thus ligand-receptor pairs comprising such a loop should have correlated mRNA expression. Using our database of experimentally known ligand-receptor signaling partners, we found examples of ligand-receptor pairs with significantly correlated expression in five cancer-based gene expression datasets. The correlated ligand-receptor pairs we identified are consistent with known autocrine signaling events in cancer cells. In addition, our algorithm predicts new autocrine signaling loops that can be verified experimentally. Chemokines were commonly members of these potential autocrine pathways. Our analysis also revealed ligand-receptor pairs with expression patterns that may indicate cellular mechanisms for preventing autocrine signaling.
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页码:295 / 300
页数:6
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