دورية أكاديمية
PTEN and the PTEN-like phosphatase CnrN have both distinct and overlapping roles in a Dictyostelium chemorepulsion pathway.
| العنوان: | PTEN and the PTEN-like phosphatase CnrN have both distinct and overlapping roles in a Dictyostelium chemorepulsion pathway. |
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| المؤلفون: | Consalvo, Kristen M., Rijal, Ramesh, Beruvides, Steven L., Mitchell, Ryan, Beauchemin, Karissa, Collins, Danni, Scoggin, Jack, Scott, Jerome, Gomer, Richard H. |
| المصدر: | Journal of Cell Science; Aug2024, Vol. 137 Issue 15, p1-11, 11p |
| مصطلحات موضوعية: | DICTYOSTELIUM, PTEN protein, DICTYOSTELIUM discoideum, PHOSPHOPROTEIN phosphatases |
| مستخلص: | Little is known about eukaryotic chemorepulsion. The enzymes phosphatase and tensin homolog (PTEN) and CnrN dephosphorylate phosphatidylinositol 3,4,5-trisphosphate [PI(3,4,5)P3] to phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2]. Dictyostelium discoideum cells require both PTEN and CnrN to induce chemorepulsion of cells away from the secreted chemorepellent protein AprA. How D. discoideum cells utilize two proteins with redundant phosphatase activities in response to AprA is unclear. Here, we show that D. discoideum cells require both PTEN and CnrN to locally inhibit Ras activation, decrease basal levels of PI(3,4,5)P3 and increase basal numbers of macropinosomes, and AprA prevents this increase. AprA requires both PTEN and CnrN to increase PI(4,5)P2 levels, decrease PI(3,4,5)P3 levels, inhibit proliferation, decrease myosin II phosphorylation and increase filopod sizes. PTEN, but not CnrN, decreases basal levels of PI(4,5)P2, and AprA requires PTEN, but not CnrN, to induce cell roundness. Together, our results suggest that CnrN and PTEN play unique roles in AprA-induced chemorepulsion. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: | Complementary Index |
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