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Published 22 December 2003. doi:10.1083/jcb.200310097
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© The Rockefeller University Press, 0021-9525/2003/12/1205 $8.00
The Journal of Cell Biology, Volume 163, Number 6, 1205-1211


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A role for cytoplasmic dynein and LIS1 in directed cell movement



Denis L. Dujardin1,2, Lora E. Barnhart1, Stephanie A. Stehman1, Edgar R. Gomes1, Gregg G. Gundersen1 and Richard B. Vallee1

1 College of Physicians and Surgeons, Department of Pathology, and Department of Anatomy and Cell Biology, Columbia University, New York, NY 10032
2 Ecole Supérieure de Biotechnologie de Strasbourg, Centre National de la Recherche Scientifique, UMR 7100, Parc d'Innovation, Boulevard Sébastien Brandt, BP 10413, 67412 ILLKIRCH Cedex, France

Address correspondence to Richard B. Vallee, Columbia University, College of Physicians and Surgeons, Dept. of Pathology and Anatomy and Cell Biology, P & S 15-409, 630 W. 168th St., New York, NY 10032. Tel.: (212) 342-0546. Fax: (212) 305-5498. email: rv2025{at}columbia.edu

Cytoplasmic dynein has been implicated in numerous aspects of intracellular movement. We recently found dynein inhibitors to interfere with the reorientation of the microtubule cytoskeleton during healing of wounded NIH3T3 cell monolayers. We now find that dynein and its regulators dynactin and LIS1 localize to the leading cell cortex during this process. In the presence of serum, bright diffuse staining was observed in regions of active ruffling. This pattern was abolished by cytochalasin D, and was not observed in cells treated with lysophosphatidic acid, conditions which allow microtubule reorientation but not forward cell movement. Under the same conditions, using total internal reflection fluorescence microscopy, clear punctate dynein/dynactin containing structures were observed along the sides and at the tips of microtubules at the leading edge. Overexpression of dominant negative dynactin and LIS1 cDNAs or injection of antidynein antibody interfered with the rate of cell migration. Together, these results implicate a leading edge cortical pool of dynein in both early and persistent steps in directed cell movement.

Key Words: microtubule; lissencephaly; motor protein; lamellipodia


Abbreviations used in this paper: LPA, lysophosphatidic acid; TIRF, total internal reflection fluorescence microscopy.


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