title: The master role of microphthalmia-associated transcription factor in melanocyte and melanoma biology.
abstract: Certain transcription factors have vital roles in lineage development, including specification of cell types and control of differentiation. Microphthalmia-associated transcription factor (MITF) is a key transcription factor for melanocyte development and differentiation. MITF regulates expression of numerous pigmentation genes to promote melanocyte differentiation, as well as fundamental genes for maintaining cell homeostasis, including genes encoding proteins involved in apoptosis (eg, BCL2) and the cell cycle (eg, CDK2). Loss-of-function mutations of MITF cause Waardenburg syndrome type IIA, whose phenotypes include depigmentation due to melanocyte loss, whereas amplification or specific mutation of MITF can be an oncogenic event that is seen in a subset of familial or sporadic melanomas. In this article, we review basic features of MITF biological function and highlight key unresolved questions regarding this remarkable transcription factor.
authors.affiliation: Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
authors.forename: Akinori
authors.initials: A
authors.lastname: Kawakami
authors.affiliation: Cutaneous Biology Research Center, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
authors.forename: David E
authors.initials: DE
authors.lastname: Fisher
mesh_terms: D000818:Animals; D006801:Humans; D008544:Melanocytes / Q000166:cytology / Q000378:metabolism / Q000502:physiology; D008545:Melanoma / Q000378:metabolism / Q000503:physiopathology; D051379:Mice; D051739:Microphthalmia-Associated Transcription Factor / Q000378:metabolism / Q000502:physiology; D015398:Signal Transduction / Q000502:physiology*
chemical_list: D051739:Microphthalmia-Associated Transcription Factor