Title : SHP-1 is a target of regorafenib in colorectal cancer.

Pub. Date : 2014 Aug 15

PMID : 25071018






12 Functional Relationships(s)
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1 SHP-1 is a target of regorafenib in colorectal cancer. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
2 However, little is known about the mechanism regarding regorafenib affects SHP-1 tyrosine phosphatase activity and leads to apoptosis and tumor suppression in CRC. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
3 Here, we found that regorafenib triggered apoptotic cell death and significantly enhanced SHP-1 activity, which dramatically decreased the phosphorylated form of STAT3 at Tyr705 (p-STAT3(Tyr705)). regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
4 Importantly, regorafenib augmented SHP-1 activity by direct disruption of the association between N-SH2 and catalytic PTP domain of SHP-1. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
5 Importantly, regorafenib augmented SHP-1 activity by direct disruption of the association between N-SH2 and catalytic PTP domain of SHP-1. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
6 Deletion of the N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 blocked the effect of regorafenib-induced SHP-1 activity, growth inhibition and a decrease of p-STAT3(Tyr705) expression, suggesting that regorafenib triggers a conformational change in SHP-1 by relieving its autoinhibition. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
7 Deletion of the N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 blocked the effect of regorafenib-induced SHP-1 activity, growth inhibition and a decrease of p-STAT3(Tyr705) expression, suggesting that regorafenib triggers a conformational change in SHP-1 by relieving its autoinhibition. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
8 Deletion of the N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 blocked the effect of regorafenib-induced SHP-1 activity, growth inhibition and a decrease of p-STAT3(Tyr705) expression, suggesting that regorafenib triggers a conformational change in SHP-1 by relieving its autoinhibition. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
9 Deletion of the N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 blocked the effect of regorafenib-induced SHP-1 activity, growth inhibition and a decrease of p-STAT3(Tyr705) expression, suggesting that regorafenib triggers a conformational change in SHP-1 by relieving its autoinhibition. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
10 In vivo assay showed that regorafenib significantly inhibited xenograft growth and decreased p-STAT3(Tyr705) expression but induced higher SHP-1 activity. regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
11 Collectively, regorafenib is a novel SHP-1 agonist exerts superior anti-tumor effects by enhancing SHP-1 activity that directly targets p-STAT3(Tyr705). regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens
12 Collectively, regorafenib is a novel SHP-1 agonist exerts superior anti-tumor effects by enhancing SHP-1 activity that directly targets p-STAT3(Tyr705). regorafenib protein tyrosine phosphatase non-receptor type 6 Homo sapiens