Involvement of the small protein tyrosine phosphatases TC-PTP and PTP1B in signal transduction and diseases:: From diabetes, obesity to cell cycle, and cancer

被引:114
作者
Dubé, N
Tremblay, ML
机构
[1] McGill Univ, McGill Canc Ctr, Montreal, PQ H3G 1Y6, Canada
[2] McGill Univ, Dept Biochem, Montreal, PQ H3G 1Y6, Canada
来源
BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS | 2005年 / 1754卷 / 1-2期
关键词
tyrosine phosphatase; signaling; diabetes; obesity; cancer;
D O I
10.1016/j.bbapap.2005.07.030
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
As in other fields of biomedical research, the use of gene-targeted mice by homologous recombination in embryonic stem cells has provided important findings on the function of several members of the protein tyrosine phosphatase (PTP) family. For instance, the phenotypic characterization of knockout mice has been critical in understanding the sites of action of the related PTPs protein tyrosine phosphatase 1B (PTP1B) and T-cell-PTP (TC-PTP). By their increased insulin sensitivity and insulin receptor hyperphosphorylation, PTP1B null mice demonstrated a clear function for this enzyme as a negative regulator of insulin signaling. As well, TC-PTP has also been recently involved in insulin signaling in vitro. Importantly, the high identity in their amino acid sequences suggests that they must be examined simultaneously as targets of drug development. Indeed, they possess different as well as overlapping substrates, which suggest complementary and overlapping roles of both TC-PTP and PTP1B. Here, we review the function of PTP1B and TC-PTP in diabetes, obesity, and processes related to cancer. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:108 / 117
页数:10
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