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Inhibition of SHIP2 activity inhibits cell migration and could prevent metastasis in breast cancer cells


GHOSH Somadri SCOZZARO Samuel RAMOS Ana Raque DELCAMBRE Seprimebastien CHEVALIER Cleprimement KREJČÍ Pavel ERNEUX Christophe

Rok publikování 2018
Druh Článek v odborném periodiku
Časopis / Zdroj Journal of Cell Science
Fakulta / Pracoviště MU

Lékařská fakulta

Klíčová slova SHIP2; Phosphoinositide; Cell migration; Breast cancer cell
Popis Metastasis of breast cancer cells to distant organs is responsible for similar to 50% of breast cancer-related deaths in women worldwide. SHIP2 (also known as INPPL1) is a phosphoinositide 5-phosphatase for phosphatidylinositol (3,4,5)-trisphosphate [PI(3,4,5)P3] and phosphatidylinositol (4,5)-bisphosphate [PI(4,5)P2]. Here we show, through depletion of SHIP2 in triple negative MDA-MB-231 cells and the use of SHIP2 inhibitors, that cell migration appears to be positively controlled by SHIP2. The effect of SHIP2 on migration, as observed in MDA-MB-231 cells, appears to be mediated by PI(3,4) P2. Adhesion on fibronectin is always increased in SHIP2-depleted cells. Apoptosis measured in MDA-MB-231 cells is also increased in SHIP2-depleted cells as compared to control cells. In xenograft mice, SHIP2-depleted MDA-MB-231 cells form significantly smaller tumors than those formed by control cells and less metastasis is detected in lung sections. Our data reveal a general role for SHIP2 in the control of cell migration in breast cancer cells and a second messenger role for PI(3,4) P2 in the migration mechanism. In MDA-MB-231 cells, SHIP2 has a function in apoptosis in cells incubated in vitro and in mouse tumor-derived cells, which could account for its role on tumor growth determined in vivo.

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