Kuiper JWP, van Horssen R, Oerlemans F, Peters W, van Dommelen MMT, te Lindert MM, ten Hagen TLM, Janssen E, Fransen JAM, Wieringa B. Local ATP generation by brain-type creatine kinase (CK-B) facilitates cell motility.
PLoS One 2009;
4:e5030. [PMID:
19333390 PMCID:
PMC2659440 DOI:
10.1371/journal.pone.0005030]
[Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2009] [Accepted: 03/03/2009] [Indexed: 01/01/2023] Open
Abstract
Background
Creatine Kinases (CK) catalyze the reversible transfer of high-energy phosphate groups between ATP and phosphocreatine, thereby playing a storage and distribution role in cellular energetics. Brain-type CK (CK-B) deficiency is coupled to loss of function in neural cell circuits, altered bone-remodeling by osteoclasts and complement-mediated phagocytotic activity of macrophages, processes sharing dependency on actomyosin dynamics.
Methodology/Principal Findings
Here, we provide evidence for direct coupling between CK-B and actomyosin activities in cortical microdomains of astrocytes and fibroblasts during spreading and migration. CK-B transiently accumulates in membrane ruffles and ablation of CK-B activity affects spreading and migration performance. Complementation experiments in CK-B-deficient fibroblasts, using new strategies to force protein relocalization from cytosol to cortical sites at membranes, confirmed the contribution of compartmentalized CK-B to cell morphogenetic dynamics.
Conclusion/Significance
Our results provide evidence that local cytoskeletal dynamics during cell motility is coupled to on-site availability of ATP generated by CK-B.
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