PMID- 23105102 OWN - NLM STAT- MEDLINE DCOM- 20130228 LR - 20211021 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 288 IP - 1 DP - 2013 Jan 4 TI - Dynamic phosphorylation of tyrosine 665 in pseudopodium-enriched atypical kinase 1 (PEAK1) is essential for the regulation of cell migration and focal adhesion turnover. PG - 123-31 LID - 10.1074/jbc.M112.410910 [doi] AB - Pseudopodium-enriched atypical kinase 1 (PEAK1) is a recently described tyrosine kinase that associates with the actin cytoskeleton and focal adhesion (FA) in migrating cells. PEAK1 is known to promote cell migration, but the responsible mechanisms remain unclear. Here, we show that PEAK1 controls FA assembly and disassembly in a dynamic pathway controlled by PEAK1 phosphorylation at Tyr-665. Knockdown of endogenous PEAK1 inhibits random cell migration. In PEAK1-deficient cells, FA lifetimes are decreased, FA assembly times are shortened, and FA disassembly times are extended. Phosphorylation of Tyr-665 in PEAK1 is essential for normal PEAK1 localization and its function in the regulation of FAs; however, constitutive phosphorylation of PEAK1 Tyr-665 is also disruptive of its function, indicating a requirement for precise spatiotemporal regulation of PEAK1. Src family kinases are required for normal PEAK1 localization and function. Finally, we provide evidence that PEAK1 promotes cancer cell invasion through Matrigel by a mechanism that requires dynamic regulation of Tyr-665 phosphorylation. FAU - Bristow, Jeanne M AU - Bristow JM AD - Department of Pathology and Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA. FAU - Reno, Theresa A AU - Reno TA FAU - Jo, Minji AU - Jo M FAU - Gonias, Steven L AU - Gonias SL FAU - Klemke, Richard L AU - Klemke RL LA - eng GR - R01 CA097022/CA/NCI NIH HHS/United States GR - R01 HL060551/HL/NHLBI NIH HHS/United States GR - CA097022/CA/NCI NIH HHS/United States GR - HL060551/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20121026 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Antineoplastic Agents) RN - 0 (Drug Combinations) RN - 0 (Laminin) RN - 0 (Paxillin) RN - 0 (Proteoglycans) RN - 119978-18-6 (matrigel) RN - 42HK56048U (Tyrosine) RN - 9007-34-5 (Collagen) RN - EC 2.7.10.1 (PEAK1 protein, human) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.10.2 (src-Family Kinases) SB - IM MH - Antineoplastic Agents/pharmacology MH - Cell Line, Tumor MH - Cell Movement MH - Cell Proliferation MH - Collagen/chemistry MH - Drug Combinations MH - Focal Adhesions/*chemistry MH - *Gene Expression Regulation MH - Humans MH - Laminin/chemistry MH - Paxillin/metabolism MH - Phosphorylation MH - Protein-Tyrosine Kinases/*chemistry MH - Proteoglycans/chemistry MH - Time Factors MH - Tyrosine/*chemistry MH - src-Family Kinases/metabolism PMC - PMC3537006 EDAT- 2012/10/30 06:00 MHDA- 2013/03/01 06:00 PMCR- 2014/01/04 CRDT- 2012/10/30 06:00 PHST- 2012/10/30 06:00 [entrez] PHST- 2012/10/30 06:00 [pubmed] PHST- 2013/03/01 06:00 [medline] PHST- 2014/01/04 00:00 [pmc-release] AID - S0021-9258(20)65317-0 [pii] AID - M112.410910 [pii] AID - 10.1074/jbc.M112.410910 [doi] PST - ppublish SO - J Biol Chem. 2013 Jan 4;288(1):123-31. doi: 10.1074/jbc.M112.410910. Epub 2012 Oct 26.