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  • Title: SHPS-1: a budding molecule against cancer dissemination.
    Author: Oshima K, Machida K, Ichigotani Y, Nimura Y, Shirafuji N, Hamaguchi M, Matsuda S.
    Journal: Cancer Res; 2002 Jul 15; 62(14):3929-33. PubMed ID: 12124321.
    Abstract:
    The expression of SHPS-1 is down-regulated by several oncogene products such as v-Src in fibroblasts. In addition, the down-regulation of SHPS-1 is also found inhuman breast cancer tissues compared with the matched normal tissues. On the other hand, forced expression of SHPS-1 suppresses anchorage-independent cell growth of v-Src-transformed cells in vitro as well as peritoneal dissemination of the cells in nude mice. Surprisingly, the extracellular region (EC) of SHPS-1 seems to take part on the inhibitory effect. Because the EC domain interacts with fibronectin and DTT abrogates the inhibitory effects of the EC, we speculate that super-fibronectin may function with the EC as a suppressor of cancer cells. Here we show that SHPS-1 expression provides a unique potential that links suppression of anchorage-independent cell growth and cancer dissemination.
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