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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dubreuil, P. Forrester, L. Bernstein, A. Reedijk, M. Rottapel, R. Fujita, J. |
| Description | Author Affiliation: Dubreuil P ( Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Canada.); |
| Abstract | Mutations at three loci in the mouse--W, Steel Sl), and microphthalmia (mi)--can lead to a deficiency in melanocytes and mast cells. As well, W and Sl mutants can be anemic and sterile, whereas mi mice are osteopetrotic due to a monocyte/macrophage defect. Recent data have shown that the c-kit receptor tyrosine kinase is the gene product of the W locus, whereas Sl encodes the ligand for this growth factor receptor. We show here that ectopic expression of c-fms, a gene that encodes a macrophage growth factor receptor that is closely related to the c-kit receptor, complements mutations at the W locus in an in vitro mast cell/fibroblast coculture system but is unable to reverse the inability of mi/mi mast cells to survive under these conditions. Furthermore, mast cells expressing the c-fms receptor survive on a monolayer of fibroblasts homozygous for the Sl mutation. These results suggest that ligand binding to the c-kit or c-fms receptor activates identical or overlapping signal transduction pathways. Furthermore, they suggest that mi encodes a protein necessary for transducing signals mediated by way of either the c-kit or c-fms receptor. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 88 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1991-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Genes, Fms Mast Cells Physiology Microphthalmos Genetics Animals Cell Survival Drug Effects Cells, Cultured Defective Viruses Genetic Vectors Kinetics Macrophage Colony-Stimulating Factor Pharmacology Cytology Melanocytes Mice Mice, Inbred C57BL Mice, Mutant Strains Plasmids Receptor, Macrophage Colony-Stimulating Factor Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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