Title |
A Collapsin Response Mediator Protein 2 Isoform Controls Myosin II-Mediated Cell Migration and Matrix Assembly by Trapping ROCK II
|
---|---|
Published in |
Molecular & Cellular Biology, March 2023
|
DOI | 10.1128/mcb.06235-11 |
Pubmed ID | |
Authors |
Atsuko Yoneda, Marie Morgan-Fisher, Robin Wait, John R. Couchman, Ulla M. Wewer |
Abstract |
Collapsin response mediator protein 2 (CRMP-2) is known as a regulator of neuronal polarity and differentiation through microtubule assembly and trafficking. Here, we show that CRMP-2 is ubiquitously expressed and a splice variant (CRMP-2L), which is expressed mainly in epithelial cells among nonneuronal cells, regulates myosin II-mediated cellular functions, including cell migration. While the CRMP-2 short form (CRMP-2S) is recognized as a substrate of the Rho-GTP downstream kinase ROCK in neuronal cells, a CRMP-2 complex containing 2L not only bound the catalytic domain of ROCK II through two binding domains but also trapped and inhibited the kinase. CRMP-2L protein levels profoundly affected haptotactic migration and the actin-myosin cytoskeleton of carcinoma cells as well as nontransformed epithelial cell migration in a ROCK activity-dependent manner. Moreover, the ectopic expression of CRMP-2L but not -2S inhibited fibronectin matrix assembly in fibroblasts. Underlying these responses, CRMP-2L regulated the kinase activity of ROCK II but not ROCK I, independent of GTP-RhoA levels. This study provides a new insight into CRMP-2 as a controller of myosin II-mediated cellular functions through the inhibition of ROCK II in nonneuronal cells. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 1 | 2% |
Unknown | 56 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 14 | 25% |
Student > Ph. D. Student | 13 | 23% |
Student > Master | 7 | 12% |
Student > Bachelor | 4 | 7% |
Student > Doctoral Student | 4 | 7% |
Other | 8 | 14% |
Unknown | 7 | 12% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 23 | 40% |
Biochemistry, Genetics and Molecular Biology | 14 | 25% |
Neuroscience | 5 | 9% |
Medicine and Dentistry | 4 | 7% |
Chemistry | 1 | 2% |
Other | 1 | 2% |
Unknown | 9 | 16% |