Cited by 98melanin and skin pigmentationMelanoma and MAPK PathwaysNeuropeptides and Animal Physiology

α Melanocyte stimulating hormone (αmsh) stimulates normal human melanocyte growth by binding to high-affinity receptors

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Luca, Michele De, Siegrist, Walter, Bondanza, Sergio, Mathor, Monica, Cancedda, Ranieri, Eberle, Alex N.·1993·Journal of Cell Science

Abstract

The combined action of cholera toxin (CT)-dependent activation of the adenylate cyclase signaling pathway, stimulation of protein kinase C, and activation of the tyrosine kinase activity of cell surface receptors and proto-oncogene products, have been shown to stimulate melanocyte proliferation. However, natural factors responsible for the optimal stimulation of normal human melanocyte growth, either isolated or co-cultured with keratinocytes, remain largely unknown. alpha MSH (alpha melanocyte stimulating hormone) has previously been shown to bind to murine and human melanoma cells and to stimulate their adenylate cyclase and tyrosinase activity. In contrast, very little is known about the presence and function of alpha MSH receptors in normal human melanocytes. We now report that alpha MSH: (i) binds to normal human melanocytes through a single class of high-affinity receptors; (ii) does not induce per se melanocytes to enter the S-phase of the cell cycle; (iii) does indeed stimulate melanocyte proliferation in a dose-dependent fashion; but its stimulatory effect requires bFGF and/or the activation of protein kinase C.

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Crossref · 10.1242/jcs.105.4.1079

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Authors
Luca, M. D., Siegrist, W., Bondanza, S., Mathor, M., Cancedda, R., & Eberle, A. N.
Affiliations
  • 1 Laboratorio di Differenziamento Cellulare, Istituto Nazionale per la Ricerca sul Cancro, 16132 Genoa, Italy
  • University Hospital of Basel (CH)
  • University Hospital and University Children’s Hospital, CH-4031 2 Laboratory of Endocrinology, Department of Research (ZLF) , , Basel, Switzerland
Venue
Journal of Cell Science
Published
1993-08-01
Volume
105
Issue
4
Pages
1079-1084
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2126544457
Cited by
98
References
36
Citations by year
2023: 1 · 2022: 1 · 2021: 2 · 2019: 2 · 2018: 3 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 2 · 2013: 3 · 2012: 1
FWCI
1.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
Keywords
alpha-melanocyte-stimulating hormone, melanocyte proliferation, high-affinity receptor, protein kinase C, basic fibroblast growth factor, cell cycle, adenylate cyclase, tyrosinase, melanoma cells
MeSH terms
Proto-Oncogene Mas, Adenylyl Cyclases, alpha-MSH, Cell Division, Cells, Cultured, Enzyme Activation, Humans, Melanocytes, Protein Kinase C, Receptors, Pituitary Hormone, Fibroblast Growth Factor 2

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