Stem cell factor, a novel cutaneous growth factor for mast cells and melanocytes
- 1 December 1994
- journal article
- review article
- Published by Springer Nature in Archives of Dermatological Research
- Vol. 287 (1) , 78-84
- https://doi.org/10.1007/bf00370723
Abstract
Mechanisms affecting mast cell and melanocyte growth and function are still poorly understood. This report summarizes the current state of knowledge on a recently described growth factor for both these cell types and for primitive haematopoietic stem cells. Stem cell factor (SCF), also named mast cell growth factor or kit-ligand, has only recently been cloned and has been shown to be encoded on human chromosome 12. It may be of specific importance in cutaneous physiology and pathology since it is produced by several cell types in the skin (e.g. fibroblasts, keratinocytes, endothelial cells) and since it affects melanocyte and mast cell growth, survival, secretion and adhesion as well as migration into tissues. Defects in the genes encoding for the SCF receptor (c-kit-protein) have been shown to be responsible for human piebaldism. A pathogenetic role in mastocytosis has recently been proposed, but remains to be proven. SCF receptor expression is decreased on cells of some malignant cell lines compared to their physiological counterparts, making it unlikely that SCF is a key factor in malignant transformation and cellular hyperproliferation. In haematopoiesis, SCF acts primarily in concert with other growth factors, and we show here that alone in serum-free culture it has no effect on mast cell growth. Furthermore, there is evidence that besides SCF, additional mast cell growth factors are secreted by fibroblasts and keratinocytes, suggesting a complex orchestration of several growth factors in the regulation of cutaneous growth and differentiation in which SCF plays only one part.Keywords
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