A Metalloprotease Disintegrin That Controls Cell Migration in Caenorhabditis elegans

Author:

Nishiwaki Kiyoji1,Hisamoto Naoki2,Matsumoto Kunihiro2

Affiliation:

1. PRESTO, Japan Science and Technology Corporation and Fundamental Research Laboratories, NEC Corporation, Miyukigaoka, Tsukuba 305-8501, Japan.

2. Department of Molecular Biology, Graduate School of Science, Nagoya University, and CREST, Japan Science and Technology Corporation, Chikusa-ku, Nagoya 464-8602, Japan.

Abstract

In Caenorhabditis elegans , the gonad acquires two U-shaped arms by the directed migration of its distal tip cells (DTCs) along the body wall basement membranes. Correct migration of DTCs requires the mig-17 gene, which encodes a member of the metalloprotease-disintegrin protein family. The MIG-17 protein is secreted from muscle cells of the body wall and localizes in the basement membranes of gonad. This localization is dependent on the disintegrin-like domain of MIG-17 and its catalytic activity. These results suggest that the MIG-17 metalloprotease directs migration of DTCs by remodeling the basement membrane.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference25 articles.

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2. Hedgecock E. M., Culotti J. G., Hall D. H., Stern B. D., Development 100, 365 (1987).

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4. Caenorhabditis elegans hermaphrodites were observed using a Zeiss Axioplan microscope equipped with a Plan 100 objective and Nomarski differential interference contrast optics. Images were captured with a Hamamatsu Photonics C5810 Color Chilled 3-CCD Camera connected to a Macintosh G3 computer.

5. The mig-17 gene was mapped to the right of the Bergerac Tc1 polymorphism bP1 on linkage group V by polymerase chain reaction–sequence tagged site (PCR-STS) mapping. Three-factor mapping placed mig-17 between bP1 and daf-11. Two cosmid clones T26H10 and F57B7 were found to rescue mig-17(k174). Four coding regions were predicted to lie within the region common to T26H10 and F57B7 by the C. elegans genome sequencing consortium computer analysis. The 5′ terminus of the mig-17 message was analyzed using the 5′ RACE System (rapid amplification of cDNA ends; Life Technologies).

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