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- W3152932608 abstract "Abstract Due to redundancy with other tyrosine phosphatases, the ubiquitously expressed tyrosine phosphatase SHP-2 (encoded by Ptpn11 ) is not required for T cell development. However, Ptpn11 gene deletion driven by CD4 Cre recombinase leads to cartilage tumors in the wrist. Using a fate mapping system, we demonstrate that wrist tumor development correlates with increased frequency and numbers of non-hematopoietic CD45 negative cells with a bone chondrocyte stromal cell precursor cell (BCSP) phenotype. Importantly, the BCSP subset has a history of CD4 expression and a marked wrist location tropism, explaining why the wrist is the main site of tumor development. Mechanistically, we found that in SHP-2 absence, SOX-9 is no longer regulated, leading to an uncontrolled proliferation of the BCSP subset. Altogether, these results identify a unique subset of chondrocyte precursors tightly regulated by SHP-2. These findings underscore the need for the development of methods to therapeutically target this subset of cells, which could potentially have an impact on treatment of SHP-2 dysfunction linked debilitating diseases." @default.
- W3152932608 created "2021-04-26" @default.
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- W3152932608 date "2021-04-21" @default.
- W3152932608 modified "2023-09-27" @default.
- W3152932608 title "SHP-2 deletion in CD4+ chondrocyte precursors leads to tumor development with wrist tropism" @default.
- W3152932608 doi "https://doi.org/10.21203/rs.3.rs-429721/v1" @default.
- W3152932608 hasPublicationYear "2021" @default.
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