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Bagati A, Moparthy S, Fink EE, Bianchi-Smiraglia A, Yun DH, Kolesnikova M, Udartseva OO, Wolff DW, Roll MV, Lipchick BC, Han Z, Kozlova NI, Jowdy P, Berman AE, Box NF, Rodriguez C, Bshara W, Kandel ES, Soengas MS, Paragh G, Nikiforov MA. KLF9-dependent ROS regulate melanoma progression in stage-specific manner. Oncogene 2019; 38:3585-3597. [PMID: 30664687 DOI: 10.1038/s41388-019-0689-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/21/2018] [Accepted: 12/25/2018] [Indexed: 12/19/2022]
Abstract
Although antioxidants promote melanoma metastasis, the role of reactive oxygen species (ROS) in other stages of melanoma progression is controversial. Moreover, genes regulating ROS have not been functionally characterized throughout the entire tumor progression in mouse models of cancer. To address this question, we crossed mice-bearing knock-out of Klf9, an ubiquitous transcriptional regulator of oxidative stress, with two conditional melanocytic mouse models: BrafCA mice, where BrafV600E causes premalignant melanocytic hyperplasia, and BrafCA/Pten-/- mice, where BrafV600E and loss of Pten induce primary melanomas and metastases. Klf9 deficiency inhibited premalignant melanocytic hyperplasia in BrafCA mice but did not affect formation and growth of BrafCA/Pten-/- primary melanomas. It also, as expected, promoted BrafCA/Pten-/- metastasis. Treatment with antioxidant N-acetyl cysteine phenocopied loss of Klf9 including suppression of melanocytic hyperplasia. We were interested in a different role of Klf9 in regulation of cell proliferation in BrafCA and BrafCA/Pten-/- melanocytic cells. Mechanistically, we demonstrated that BRAFV600E signaling transcriptionally upregulated KLF9 and that KLF9-dependent ROS were required for full-scale activation of ERK1/2 and induction of cell proliferation by BRAFV600E. PTEN depletion in BRAFV600E-melanocytes did not further activate ERK1/2 and cell proliferation, but rendered these phenotypes insensitive to KLF9 and ROS. Our data identified an essential role of KLF9-dependent ROS in BRAFV600E signaling in premalignant melanocytes, offered an explanation to variable role of ROS in premalignant and transformed melanocytic cells and suggested a novel mechanism for suppression of premalignant growth by topical antioxidants.
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Affiliation(s)
- Archis Bagati
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Smith Building, SM-0728, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Sudha Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Emily E Fink
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | | | - Dong Hyun Yun
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Masha Kolesnikova
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Olga O Udartseva
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - David W Wolff
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Matthew V Roll
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Brittany C Lipchick
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA.,Department of Hematology and Oncology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Zhannan Han
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | | | - Peter Jowdy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Albert E Berman
- Orekhovich Institute of Biomedical Chemistry, Moscow, 119121, Russia
| | - Neil F Box
- Department of Dermatology, Anschutz Medical Campus, University of Colorado, Aurora, CO, USA
| | - Cesar Rodriguez
- Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Wiam Bshara
- Department of Pathology Resource Network, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Eugene S Kandel
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Maria S Soengas
- Melanoma Laboratory, Molecular Oncology Programme, Spanish National Cancer Research Center (CNIO), 28029, Madrid, Spain
| | - Gyorgy Paragh
- Department of Dermatology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Mikhail A Nikiforov
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA. .,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA.
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2
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Asdigian NL, Barón AE, Morelli JG, Mokrohisky ST, Aalborg J, Dellavalle RP, Daley MF, Berwick M, Muller KE, Box NF, Crane LA. Trajectories of Nevus Development From Age 3 to 16 Years in the Colorado Kids Sun Care Program Cohort. JAMA Dermatol 2018; 154:1272-1280. [PMID: 30208471 PMCID: PMC6248123 DOI: 10.1001/jamadermatol.2018.3027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/13/2018] [Indexed: 11/14/2022]
Abstract
Importance Nevi are a risk factor for melanoma and other forms of skin cancer, and many of the same factors confer risk for both. Understanding childhood nevus development may provide clues to possible causes and prevention of melanoma. Objectives To describe nevus acquisition from the ages of 3 to 16 years among white youths and evaluate variation by sex, Hispanic ethnicity, and body sites that are chronically vs intermittently exposed to the sun. Design, Setting, and Participants This annual longitudinal observational cohort study of nevus development was conducted between June 1, 2001, and October 31, 2014, among 1085 Colorado youths. Data analysis was conducted between February 1, 2015, and August 31, 2017. Main Outcomes and Measures Total nevus counts on all body sites and on sites chronically and intermittently exposed to the sun separately. Results A total of 557 girls and 528 boys (150 [13.8%] Hispanic participants) born in 1998 were included in this study. Median total body nevus counts increased linearly among non-Hispanic white boys and girls between the age of 3 years (boys, 6.31; 95% CI, 5.66-7.03; and girls, 6.61; 95% CI, 5.96-7.33) and the age of 16 years (boys, 81.30; 95% CI, 75.95-87.03; and girls, 77.58; 95% CI, 72.68-82.81). Median total body nevus counts were lower among Hispanic white children (boys aged 16 years, 51.45; 95% CI, 44.01-60.15; and girls aged 16 years, 53.75; 95% CI, 45.40-63.62) compared with non-Hispanic white children, but they followed a largely linear trend that varied by sex. Nevus counts on body sites chronically exposed to the sun increased over time but leveled off by the age of 16 years. Nevus counts on sites intermittently exposed to the sun followed a strong linear pattern through the age of 16 years. Hispanic white boys and girls had similar nevus counts on sites intermittently exposed to the sun through the age of 10 years, but increases thereafter were steeper for girls, with nevus counts surpassing those of boys aged 11 to 16 years. Conclusions and Relevance Youths are at risk for nevus development beginning in early childhood and continuing through midadolescence. Patterns of nevus acquisition differ between boys and girls, Hispanic and non-Hispanic white youths, and body sites that are chronically exposed to the sun and body sites that are intermittently exposed to the sun. Exposure to UV light during this period should be reduced, particularly on body sites intermittently exposed to the sun, where nevi accumulate through midadolescence in all children. Increased attention to sun protection appears to be merited for boys, in general, because they accumulated more nevi overall, and for girls, specifically, during the adolescent years.
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Affiliation(s)
- Nancy L. Asdigian
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
| | - Anna E. Barón
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
| | - Joseph G. Morelli
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora
| | | | - Jenny Aalborg
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
| | - Robert P. Dellavalle
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
- Dermatology Service, US Department of Veterans Affairs Rocky Mountain Regional Medical Center, Aurora, Colorado
| | - Matthew F. Daley
- Department of Pediatrics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora
- Institute for Health Research, Kaiser Permanente Colorado, Aurora
| | - Marianne Berwick
- Department of Internal Medicine, School of Medicine, University of New Mexico, Albuquerque
- Department of Dermatology, School of Medicine, University of New Mexico, Albuquerque
| | - Keith E. Muller
- Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville
| | - Neil F. Box
- Department of Dermatology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
| | - Lori A. Crane
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora
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3
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Abstract
The International Federation of Pigment Cell Societies (IFPCS) held its XXIII triennial International Pigment Cell Conference (IPCC) in Denver, Colorado in August 2017. The goal of the summit was to provide a venue promoting a vibrant interchange among leading basic and clinical researchers working on leading-edge aspects of melanocyte biology and disease. The philosophy of the meeting, entitled Breakthroughs in Pigment Cell and Melanoma Research, was to deliver a comprehensive program in an inclusive environment fostering scientific exchange and building new academic bridges. This document provides an outlook on the history, accomplishments, and sustainability of the pigment cell and melanoma research community. Shared progress in the understanding of cellular homeostasis of pigment cells but also clinical successes and hurdles in the treatment of melanoma and dermatological disorders continue to drive future research activities. A sustainable direction of the societies creates an international forum identifying key areas of imminent needs in laboratory research and clinical care and ensures the future of this vibrant, diverse and unique research community at the same time. Important advances showcase wealth and breadth of the field in melanocyte and melanoma research and include emerging frontiers in melanoma immunotherapy, medical and surgical oncology, dermatology, vitiligo, albinism, genomics and systems biology, precision bench-to-bedside approaches, epidemiology, pigment biophysics and chemistry, and evolution. This report recapitulates highlights of the federate meeting agenda designed to advance clinical and basic research frontiers from melanoma and dermatological sciences followed by a historical perspective of the associated societies and conferences.
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Affiliation(s)
- Neil F. Box
- Department of Dermatology and Epidemiology, University of Colorado Denver, Aurora, CO USA
| | - Lionel Larue
- CNRS, Equipe Labellisée Ligue Contre le Cancer, Normal and Pathological Development of Melanocytes, UMR 3347, Institut Curie, Orsay, France
| | - Prashiela Manga
- Ronald O Perlman Department of Dermatology, New York University Langone Medical Center, New York, NY USA
| | - Lluis Montoliu
- CNB-CSIC, CIBERER-ISCIII, Centro Nacional de Biotecnología, Campus de Cantoblanco, Madrid, Spain
| | - Richard A. Spritz
- Department of Dermatology and Epidemiology, University of Colorado Denver, Aurora, CO USA
- Human Medical Genetics and Genomics Program, University of Colorado Denver, Aurora, CO USA
| | - Fabian V. Filipp
- Systems Biology and Cancer Metabolism, Program for Quantitative Systems Biology, University of California Merced, 5200 North Lake Road, Merced, CA 95343 USA
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4
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Jeter JM, Bowles TL, Curiel-Lewandrowski C, Swetter SM, Filipp FV, Abdel-Malek ZA, Geskin LJ, Brewer JD, Arbiser JL, Gershenwald JE, Chu EY, Kirkwood JM, Box NF, Funchain P, Fisher DE, Kendra KL, Marghoob AA, Chen SC, Ming ME, Albertini MR, Vetto JT, Margolin KA, Pagoto SL, Hay JL, Grossman D, Ellis DL, Kashani-Sabet M, Mangold AR, Markovic SN, Meyskens FL, Nelson KC, Powers JG, Robinson JK, Sahni D, Sekulic A, Sondak VK, Wei ML, Zager JS, Dellavalle RP, Thompson JA, Weinstock MA, Leachman SA, Cassidy PB. Chemoprevention agents for melanoma: A path forward into phase 3 clinical trials. Cancer 2018; 125:18-44. [PMID: 30281145 DOI: 10.1002/cncr.31719] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/10/2018] [Accepted: 07/12/2018] [Indexed: 12/12/2022]
Abstract
Recent progress in the treatment of advanced melanoma has led to unprecedented improvements in overall survival and, as these new melanoma treatments have been developed and deployed in the clinic, much has been learned about the natural history of the disease. Now is the time to apply that knowledge toward the design and clinical evaluation of new chemoprevention agents. Melanoma chemoprevention has the potential to reduce dramatically both the morbidity and the high costs associated with treating patients who have metastatic disease. In this work, scientific and clinical melanoma experts from the national Melanoma Prevention Working Group, composed of National Cancer Trials Network investigators, discuss research aimed at discovering and developing (or repurposing) drugs and natural products for the prevention of melanoma and propose an updated pipeline for translating the most promising agents into the clinic. The mechanism of action, preclinical data, epidemiological evidence, and results from available clinical trials are discussed for each class of compounds. Selected keratinocyte carcinoma chemoprevention studies also are considered, and a rationale for their inclusion is presented. These data are summarized in a table that lists the type and level of evidence available for each class of agents. Also included in the discussion is an assessment of additional research necessary and the likelihood that a given compound may be a suitable candidate for a phase 3 clinical trial within the next 5 years.
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Affiliation(s)
- Joanne M Jeter
- Department of Medicine, Divisions of Genetics and Oncology, The Ohio State University, Columbus, Ohio
| | - Tawnya L Bowles
- Department of Surgery, Intermountain Health Care, Huntsman Cancer Institute, University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Susan M Swetter
- Department of Dermatology, Pigmented Lesion and Melanoma Program, Stanford University Medical Center Cancer Institute, Veterans Affairs Palo Alto Health Care System, Palo Alto, California
| | - Fabian V Filipp
- Systems Biology and Cancer Metabolism, Program for Quantitative Systems Biology, University of California Merced, Merced, California
| | | | - Larisa J Geskin
- Department of Dermatology, Cutaneous Oncology Center, Columbia University Medical Center, New York, New York
| | - Jerry D Brewer
- Department of Dermatologic Surgery, Mayo Clinic Minnesota, Rochester, Minnesota
| | - Jack L Arbiser
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia.,Division of Dermatology, Veterans Affairs Medical Center, Atlanta, Georgia
| | - Jeffrey E Gershenwald
- Departments of Surgical Oncology and Cancer Biology, Melanoma and Skin Cancer Center, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Emily Y Chu
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - John M Kirkwood
- Melanoma and Skin Cancer Program, Department of Medicine, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | - Neil F Box
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.,Dermatology Service, U.S. Department of Veterans Affairs, Eastern Colorado Health Care System, Denver, Colorado.,Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - David E Fisher
- Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts
| | - Kari L Kendra
- Department of Internal Medicine, Medical Oncology Division, The Ohio State University, Columbus, Ohio
| | - Ashfaq A Marghoob
- Memorial Sloan Kettering Skin Cancer Center and Department of Dermatology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Suephy C Chen
- Department of Dermatology, Emory University School of Medicine, Atlanta, Georgia.,Division of Dermatology, Veterans Affairs Medical Center, Atlanta, Georgia
| | - Michael E Ming
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Mark R Albertini
- Department of Medicine, University of Wisconsin, School of Medicine and Public Health, University of Wisconsin Carbone Cancer Center, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | - John T Vetto
- Division of Surgical Oncology, Oregon Health & Science University, Portland, Oregon
| | - Kim A Margolin
- Department of Medical Oncology, City of Hope National Medical Center, Duarte, California
| | - Sherry L Pagoto
- Department of Allied Health Sciences, UConn Institute for Collaboration in Health, Interventions, and Policy, University of Connecticut, Storrs, Connecticut
| | - Jennifer L Hay
- Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Douglas Grossman
- Departments of Dermatology and Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah
| | - Darrel L Ellis
- Department of Dermatology, Vanderbilt University Medical Center and Division of Dermatology, Vanderbilt Ingram Cancer Center, Nashville, Tennessee.,Department of Medicine, Tennessee Valley Healthcare System, Nashville Veterans Affairs Medical Center, Nashville, Tennessee
| | - Mohammed Kashani-Sabet
- Center for Melanoma Research and Treatment, California Pacific Medical Center, San Francisco, California
| | | | | | | | - Kelly C Nelson
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | | | - June K Robinson
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Debjani Sahni
- Department of Dermatology, Boston Medical Center, Boston, Massachusetts
| | | | - Vernon K Sondak
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center, Tampa, Florida.,Departments of Oncologic Sciences and Surgery, University of South Florida Morsani College of Medicine, Tampa, Florida
| | - Maria L Wei
- Department of Dermatology, University of California, San Francisco, San Francisco, California.,Dermatology Service, San Francisco Veterans Affairs Medical Center, San Francisco, California
| | - Jonathan S Zager
- Department of Cutaneous Oncology, H. Lee Moffitt Cancer Center, Tampa, Florida.,Department of Sarcoma, H. Lee Moffitt Cancer Center, Tampa, Florida
| | - Robert P Dellavalle
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.,Dermatology Service, U.S. Department of Veterans Affairs, Eastern Colorado Health Care System, Denver, Colorado.,Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - John A Thompson
- Fred Hutchinson Cancer Research Center, University of Washington, Seattle, Washington
| | - Martin A Weinstock
- Center for Dermatoepidemiology, Veterans Affairs Medical Center, Providence, Rhode Island.,Department of Dermatology, Brown University, Providence, Rhode Island.,Department of Epidemiology, Brown University, Providence, Rhode Island.,Department of Dermatology, Rhode Island Hospital, Providence, Rhode Island
| | - Sancy A Leachman
- Department of Dermatology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon
| | - Pamela B Cassidy
- Department of Dermatology, Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon
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5
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Filipp FV, Birlea S, Bosenberg MW, Brash D, Cassidy PB, Chen S, D'Orazio JA, Fujita M, Goh BK, Herlyn M, Indra AK, Larue L, Leachman SA, Le Poole C, Liu-Smith F, Manga P, Montoliu L, Norris DA, Shellman Y, Smalley KSM, Spritz RA, Sturm RA, Swetter SM, Terzian T, Wakamatsu K, Weber JS, Box NF. Frontiers in pigment cell and melanoma research. Pigment Cell Melanoma Res 2018; 31:728-735. [PMID: 30281213 DOI: 10.1111/pcmr.12728] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 12/21/2022]
Abstract
In this perspective, we identify emerging frontiers in clinical and basic research of melanocyte biology and its associated biomedical disciplines. We describe challenges and opportunities in clinical and basic research of normal and diseased melanocytes that impact current approaches to research in melanoma and the dermatological sciences. We focus on four themes: (1) clinical melanoma research, (2) basic melanoma research, (3) clinical dermatology, and (4) basic pigment cell research, with the goal of outlining current highlights, challenges, and frontiers associated with pigmentation and melanocyte biology. Significantly, this document encapsulates important advances in melanocyte and melanoma research including emerging frontiers in melanoma immunotherapy, medical and surgical oncology, dermatology, vitiligo, albinism, genomics and systems biology, epidemiology, pigment biophysics and chemistry, and evolution.
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Affiliation(s)
- Fabian V Filipp
- Systems Biology and Cancer Metabolism, Program for Quantitative Systems Biology, University of California Merced, Merced, California
| | - Stanca Birlea
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
| | - Marcus W Bosenberg
- Department of Dermatology and Dermatopathology, Yale School of Medicine, New Haven, Connecticut
| | - Douglas Brash
- Department of Therapeutic Radiology, Yale School of Medicine, New Haven, Connecticut
| | - Pamela B Cassidy
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon
| | - Suzie Chen
- Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey
| | - John A D'Orazio
- Markey Cancer Center, University of Kentucky College of Medicine, Lexington, Kentucky
| | - Mayumi Fujita
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
| | - Boon-Kee Goh
- Mount Elizabeth Medical Centre, Skin Physicians Private Limited, Singapore, Singapore
| | - Meenhard Herlyn
- Department of Molecular and Cellular Oncogenesis, Wistar Institute, Philadelphia, Pennsylvania
| | - Arup K Indra
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon.,Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon
| | - Lionel Larue
- Equipe Labellisée Ligue Contre le Cancer, Normal and Pathological Development of Melanocytes, UMR 3347, CNRS, Institut Curie, Orsay, France
| | - Sancy A Leachman
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon
| | - Caroline Le Poole
- Lurie Comprehensive Cancer Center, Northwestern University at Chicago, Chicago, Illinois
| | - Feng Liu-Smith
- Chao Family Comprehensive Cancer Center, University of California Irvine, Orange, California
| | - Prashiela Manga
- Ronald O Perlman Department of Dermatology, New York University Langone Medical Center, New York, New York
| | - Lluis Montoliu
- CNB-CSIC, CIBERER-ISCIII, Campus de Cantoblanco, Centro Nacional de Biotecnología, Madrid, Spain
| | - David A Norris
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
| | - Yiqun Shellman
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
| | | | - Richard A Spritz
- Human Medical Genetics and Genomics Program, University of Colorado Denver, Aurora, Colorado
| | - Richard A Sturm
- Dermatology Research Centre, University of Queensland Diamantina Institute, University of Queensland, Brisbane, Queensland, Australia
| | - Susan M Swetter
- Department of Dermatology, Stanford University, Palo Alto, California
| | - Tamara Terzian
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
| | - Kazumasa Wakamatsu
- Department of Chemistry, Fujita Health University School of Health Sciences, Toyoake, Japan
| | - Jeffrey S Weber
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Medical Center, New York, New York
| | - Neil F Box
- Department of Dermatology, University of Colorado Denver, Aurora, Colorado
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6
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Bagati A, Bianchi-Smiraglia A, Moparthy S, Kolesnikova K, Fink EE, Kolesnikova M, Roll MV, Jowdy P, Wolff DW, Polechetti A, Yun DH, Lipchick BC, Paul LM, Wrazen B, Moparthy K, Mudambi S, Morozevich GE, Georgieva SG, Wang J, Shafirstein G, Liu S, Kandel ES, Berman AE, Box NF, Paragh G, Nikiforov MA. FOXQ1 controls the induced differentiation of melanocytic cells. Cell Death Differ 2018; 25:1040-1049. [PMID: 29463842 DOI: 10.1038/s41418-018-0066-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/26/2017] [Accepted: 01/11/2018] [Indexed: 01/08/2023] Open
Abstract
Oncogenic transcription factor FOXQ1 has been implicated in promotion of multiple transformed phenotypes in carcinoma cells. Recently, we have characterized FOXQ1 as a melanoma tumor suppressor that acts via repression of N-cadherin gene, and invasion and metastasis. Here we report that FOXQ1 induces differentiation in normal and transformed melanocytic cells at least partially via direct transcriptional activation of MITF gene, melanocytic lineage-specific regulator of differentiation. Importantly, we demonstrate that pigmentation induced in cultured melanocytic cells and in mice by activation of cAMP/CREB1 pathway depends in large part on FOXQ1. Moreover, our data reveal that FOXQ1 acts as a critical mediator of BRAFV600E-dependent regulation of MITF levels, thus providing a novel link between two major signal transduction pathways controlling MITF and differentiation in melanocytic cells.
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Affiliation(s)
- Archis Bagati
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Smith Building, SM-0728, 450 Brookline Ave, Boston, MA, 02215, USA
| | | | - Sudha Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Kateryna Kolesnikova
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Emily E Fink
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Masha Kolesnikova
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Matthew V Roll
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Peter Jowdy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - David W Wolff
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Anthony Polechetti
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Dong Hyun Yun
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Brittany C Lipchick
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Leslie M Paul
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Brian Wrazen
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Kalyana Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Shaila Mudambi
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | | | | | - Jianmin Wang
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Gal Shafirstein
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Song Liu
- Department of Biostatistics and Bioinformatics, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Eugene S Kandel
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Albert E Berman
- Orekhovich Institute of Biomedical Chemistry, Moscow, 119121, Russia
| | - Neil F Box
- Department of Dermatology, Anschutz Medical Campus, University of Colorado, Aurora, CO, USA
| | - Gyorgy Paragh
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Dermatology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Mikhail A Nikiforov
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.
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Mounessa JS, Box NF, Asdigian NL, Braunberger T, Dunnick CA, Crane LA, Dellavalle RR. Portable equipment for taking dramatic sun-damage revealing photos at skin cancer prevention outreach events. Dermatol Online J 2017; 23:13030/qt33j0040b. [PMID: 28537858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 05/22/2017] [Indexed: 06/07/2023] Open
Abstract
In recent years, appearance-based interventions have gained popularity as a means to improve public awareness about skin cancer and sun protective behaviors. Although numerous reports discuss the use of ultraviolet (UV) camera devices for this purpose,studies on the use of portable imaging devices in community outreach events do not presently exist. In this report, we discuss how we successfully utilize portable imaging devices at community outreach events. We also discuss the advantages and disadvantages of our portable devices in comparison to traditional UV cameras. Portable imaging devices are easy to use and have allowed us to increase our involvement in community outreach events targeting a wide range of participants.
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Affiliation(s)
| | | | | | | | | | | | - Robert R Dellavalle
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado Dermatology Service, Eastern Colorado Health Care System, US Department of Veteran Affairs, Denver, Colorado.
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Abstract
Cellular senescence is an irreversible arrest of cell proliferation at the G1 stage of the cell cycle in which cells become refractory to growth stimuli. Senescence is a critical and potent defense mechanism that mammalian cells use to suppress tumors. While there are many ways to induce a senescence response, oncogene-induced senescence (OIS) remains the key to inhibiting progression of cells that have acquired oncogenic mutations. In primary cells in culture, OIS induces a set of measurable phenotypic and behavioral changes, in addition to cell cycle exit. Senescence-associated β-Galactosidase (SA-β-Gal) activity is a main hallmark of senescent cells, along with morphological changes that may depend on the oncogene that is activated, or on the primary cell type. Characteristic cellular changes of senescence include increased size, flattening, multinucleation, and extensive vacuolation. At the molecular level, tumor suppressor genes such as p53 and p16 INK4A may play a role in initiation or maintenance of OIS. Activation of a DNA damage response and a senescence-associated secretory phenotype could delineate the onset of senescence. Despite advances in our understanding of how OIS suppresses some tumor types, the in vivo role of OIS in melanocytic nevi and melanoma remains poorly understood and not validated. In an effort to stimulate research in this field, we review in this chapter the known markers of senescence and provide experimental protocols for their identification by immunofluorescent staining in melanocytic nevi and malignant melanoma.
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Affiliation(s)
- Andrew Joselow
- Charles C. Gates Center for Regenerative Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
- Department of Dermatology, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
- School of Medicine, Tulane University, New Orleans, LA, USA
| | - Darren Lynn
- Charles C. Gates Center for Regenerative Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
- Department of Dermatology, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Tamara Terzian
- Charles C. Gates Center for Regenerative Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
- Department of Dermatology, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - Neil F Box
- Department of Dermatology, University of Colorado, Anschutz Medical Campus, Aurora, CO, USA.
- Charles C. Gates Center for Regenerative Medicine, University of Colorado, Anschutz Medical Campus, RC1-North, P18-8132, Aurora, CO, 80045, USA.
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Mounessa JS, Box NF, Asdigian NL, Braunberger T, Dunnick CA, Crane LA, Dellavalle RR. Portable equipment for taking dramatic sun-damagerevealing photos at skin cancer prevention outreach events. Dermatol Online J 2017. [DOI: 10.5070/d3235034923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Barón AE, Asdigian NL, Gonzalez V, Aalborg J, Terzian T, Stiegmann RA, Torchia EC, Berwick M, Dellavalle RP, Morelli JG, Mokrohisky ST, Crane LA, Box NF. Interactions between ultraviolet light and MC1R and OCA2 variants are determinants of childhood nevus and freckle phenotypes. Cancer Epidemiol Biomarkers Prev 2015; 23:2829-39. [PMID: 25410285 DOI: 10.1158/1055-9965.epi-14-0633] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Melanocytic nevi (moles) and freckles are well known biomarkers of melanoma risk, and they are influenced by similar UV light exposures and genetic susceptibilities to those that increase melanoma risk. Nevertheless, the selective interactions between UV exposures and nevus and freckling genes remain largely undescribed. METHODS We conducted a longitudinal study from ages 6 through 10 years in 477 Colorado children who had annual information collected for sun exposure, sun protection behaviors, and full body skin exams. MC1R and HERC2/OCA2 rs12913832 were genotyped and linear mixed models were used to identify main and interaction effects. RESULTS All measures of sun exposure (chronic, sunburns, and waterside vacations) contributed to total nevus counts, and cumulative chronic exposure acted as the major driver of nevus development. Waterside vacations strongly increased total nevus counts in children with rs12913832 blue eye color alleles and facial freckling scores in those with MC1R red hair color variants. Sunburns increased the numbers of larger nevi (≥2 mm) in subjects with certain MC1R and rs12913832 genotypes. CONCLUSIONS Complex interactions between different UV exposure profiles and genotype combinations determine nevus numbers and size, and the degree of facial freckling. IMPACT Our findings emphasize the importance of implementing sun-protective behavior in childhood regardless of genetic make-up, although children with particular genetic variants may benefit from specifically targeted preventive measures to counteract their inherent risk of melanoma. Moreover, we demonstrate, for the first time, that longitudinal studies are a highly powered tool to uncover new gene-environment interactions that increase cancer risk.
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Affiliation(s)
- Anna E Barón
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Nancy L Asdigian
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Victoria Gonzalez
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Jenny Aalborg
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Tamara Terzian
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Regan A Stiegmann
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Enrique C Torchia
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Marianne Berwick
- Division of Epidemiology, University of New Mexico, Albuquerque, New Mexico
| | - Robert P Dellavalle
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Dermatology Service, Department of Veterans Affairs, Eastern Colorado Health Care System, Denver, Colorado. Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Joseph G Morelli
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Lori A Crane
- Department of Community and Behavioral Health, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Neil F Box
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado. Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado.
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Wallace MD, Box NF, Bond GL. SNPing away at human skin color. Pigment Cell Melanoma Res 2014; 27:322-3. [PMID: 24517848 DOI: 10.1111/pcmr.12229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Zeron-Medina J, Wang X, Repapi E, Campbell MR, Su D, Castro-Giner F, Davies B, Peterse EF, Sacilotto N, Walker GJ, Terzian T, Tomlinson IP, Box NF, Meinshausen N, De Val S, Bell DA, Bond GL. A polymorphic p53 response element in KIT ligand influences cancer risk and has undergone natural selection. Cell 2013; 155:410-22. [PMID: 24120139 PMCID: PMC4171736 DOI: 10.1016/j.cell.2013.09.017] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/09/2013] [Accepted: 09/10/2013] [Indexed: 12/13/2022]
Abstract
The ability of p53 to regulate transcription is crucial for tumor suppression and implies that inherited polymorphisms in functional p53-binding sites could influence cancer. Here, we identify a polymorphic p53 responsive element and demonstrate its influence on cancer risk using genome-wide data sets of cancer susceptibility loci, genetic variation, p53 occupancy, and p53-binding sites. We uncover a single-nucleotide polymorphism (SNP) in a functional p53-binding site and establish its influence on the ability of p53 to bind to and regulate transcription of the KITLG gene. The SNP resides in KITLG and associates with one of the largest risks identified among cancer genome-wide association studies. We establish that the SNP has undergone positive selection throughout evolution, signifying a selective benefit, but go on to show that similar SNPs are rare in the genome due to negative selection, indicating that polymorphisms in p53-binding sites are primarily detrimental to humans.
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Affiliation(s)
- Jorge Zeron-Medina
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
| | - Xuting Wang
- Environmental Genomics Group, Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences-National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Emmanouela Repapi
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
| | - Michelle R. Campbell
- Environmental Genomics Group, Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences-National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Dan Su
- Environmental Genomics Group, Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences-National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Francesc Castro-Giner
- Molecular and Population Genetics Laboratory, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Benjamin Davies
- Transgenic Technology Research Group, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Elisabeth F.P. Peterse
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
| | - Natalia Sacilotto
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
| | - Graeme J. Walker
- Skin Carcinogenesis Laboratory, Queensland Institute of Medical Research, Herston, QLD 4006, Australia
| | - Tamara Terzian
- Department of Dermatology, University of Colorado Denver, Aurora, CO 80045, USA
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Ian P. Tomlinson
- Molecular and Population Genetics Laboratory, The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Neil F. Box
- Department of Dermatology, University of Colorado Denver, Aurora, CO 80045, USA
- Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Nicolai Meinshausen
- Department of Statistics, University of Oxford, 1 South Parks Road, Oxford OX1 3TG, UK
| | - Sarah De Val
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
| | - Douglas A. Bell
- Environmental Genomics Group, Laboratory of Molecular Genetics, National Institute of Environmental Health Sciences-National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Gareth L. Bond
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK
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Handoko HY, Box NF, Walker GJ. Modeling Epidermal Melanoma in Mice: Moving into New Realms but with Unexpected Complexities. J Invest Dermatol 2012; 132:2299-302. [DOI: 10.1038/jid.2012.200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Tran AD, Aalborg J, Asdigian NL, Morelli JG, Mokrohisky ST, Dellavalle RP, Berwick M, Box NF, Crane LA. Parents' perceptions of skin cancer threat and children's physical activity. Prev Chronic Dis 2012; 9:E143. [PMID: 22935145 PMCID: PMC3475504 DOI: 10.5888/pcd9.110345] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Introduction Sun exposure is a major risk factor for skin cancer, but without physical activity, children are at risk of childhood obesity. The objective of this study was to explore relationships between parental perceptions of skin cancer threat, sun protection behaviors, physical activity, and body mass index (BMI) in children. Methods This is a cross-sectional analysis nested within the Colorado Kids Sun Care Program sun safety intervention trial. In summer 2007, parent telephone interviews provided data on demographics, perceptions of skin cancer threat, sun protection behaviors, and physical activity. Physical examinations provided data on phenotype, freckling, and BMI. Data from 999 Colorado children born in 1998 were included in analysis. We used analysis of variance, Spearman’s rho (ρ) correlation, and multivariable linear regression analysis to evaluate relationships with total amount of outdoor physical activity. Results After controlling for sex, race/ethnicity, skin color, and sun protection, regression analysis showed that each unit increase in perceived severity of nonmelanoma skin cancer was associated with a 30% increase in hours of outdoor physical activity (P = .005). Hours of outdoor physical activity were not related to perceived severity of melanoma or perceived susceptibility to skin cancer. BMI-for-age was not significantly correlated with perceptions of skin cancer threat, use of sun protection, or level of physical activity. Conclusion The promotion of sun safety is not likely to inhibit physical activity. Skin cancer prevention programs should continue to promote midday sun avoidance and sun protection during outdoor activities.
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Affiliation(s)
- Alexander D Tran
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Gamble RG, Asdigian NL, Aalborg J, Gonzalez V, Box NF, Huff LS, Barón AE, Morelli JG, Mokrohisky ST, Crane LA, Dellavalle RP. Sun damage in ultraviolet photographs correlates with phenotypic melanoma risk factors in 12-year-old children. J Am Acad Dermatol 2012; 67:587-97. [PMID: 22406230 DOI: 10.1016/j.jaad.2011.11.922] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Revised: 09/25/2011] [Accepted: 11/10/2011] [Indexed: 11/26/2022]
Abstract
BACKGROUND Ultraviolet (UV) photography has been used to motivate sun safety in behavioral interventions. The relationship between sun damage shown in UV photographs and melanoma risk has not been systematically investigated. OBJECTIVE To examine the relationship between severity of sun damage in UV photographs and phenotypic melanoma risk factors in children. METHODS UV, standard visible and cross-polarized photographs were recorded for 585 children. Computer software quantified sun damage. Full-body nevus counts, skin color by colorimetry, facial freckling, hair and eye color were collected in skin examinations. Demographic data were collected in telephone interviews of parents. RESULTS Among 12-year-old children, sun damage shown in UV photographs correlated with phenotypic melanoma risk factors. Sun damage was greatest for children who were non-Hispanic white and those who had red hair, blue eyes, increased facial freckling, light skin and greater number of nevi (all P values < .001). Results were similar for standard visible and cross-polarized photographs. Freckling was the strongest predictor of sun damage in visible and UV photographs. All other phenotypic melanoma risk factors were also predictors for the UV photographs. LIMITATIONS Differences in software algorithms used to score the photographs could produce different results. CONCLUSION UV photographs portray more sun damage in children with higher risk for melanoma based on phenotype. Therefore sun protection interventions targeting those with greater sun damage on UV photographs will target those at higher melanoma risk. This study establishes reference ranges dermatologists can use to assess sun damage in their pediatric patients.
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Affiliation(s)
- Ryan G Gamble
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Torchia EC, Caulin C, Acin S, Terzian T, Kubick BJ, Box NF, Roop DR. Myc, Aurora Kinase A, and mutant p53(R172H) co-operate in a mouse model of metastatic skin carcinoma. Oncogene 2011; 31:2680-90. [PMID: 21963848 DOI: 10.1038/onc.2011.441] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Clinical observations, as well as data obtained from the analysis of genetically engineered mouse models, firmly established the gain-of-function (GOF) properties of certain p53 mutations. However, little is known about the underlying mechanisms. We have used two independent microarray platforms to perform a comprehensive and global analysis of tumors arising in a model of metastatic skin cancer progression, which compares the consequences of a GOF p53(R172H) mutant vs p53 deficiency. DNA profiling revealed a higher level of genomic instability in GOF vs loss-of-function (LOF) p53 squamous cell carcinomas (SCCs). Moreover, GOF p53 SCCs showed preferential amplification of Myc with a corresponding increase in its expression and deregulation of Aurora Kinase A. Fluorescent in situ hybridization confirmed amplification of Myc in primary GOF p53 SCCs and its retention in metastatic tumors. We also identified by RNA profiling distinct gene expression profiles in GOF p53 tumors, which included enriched integrin and Rho signaling, independent of tumor stage. Thus, the progression of GOF p53 papillomas to carcinoma was marked by the acquisition of epithelial-to-mesenchymal transition and metastatic signatures. In contrast, LOF p53 tumors showed enrichment of genes associated with cancer proliferation and chromosomal instability. Collectively, these observations suggest that genomic instability has a prominent role in the early stages of GOF p53 tumor progression (that is, papillomas), whereas it is implicated at a later stage in LOF p53 tumors (that is, SCCs). This model will allow us to identify specific targets in mutant p53 SCCs, which may lead to the development of new therapeutic agents for the treatment of metastatic SCCs.
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Affiliation(s)
- E C Torchia
- Departmant of Dermatology and Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Terzian T, Dumble M, Arbab F, Thaller C, Donehower LA, Lozano G, Justice MJ, Roop DR, Box NF. Rpl27a mutation in the sooty foot ataxia mouse phenocopies high p53 mouse models. J Pathol 2011; 224:540-52. [PMID: 21674502 DOI: 10.1002/path.2891] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 02/28/2011] [Accepted: 03/04/2011] [Indexed: 01/06/2023]
Abstract
Ribosomal stress is an important, yet poorly understood, mechanism that results in activation of the p53 tumour suppressor. We present a mutation in the ribosomal protein Rpl27a gene (sooty foot ataxia mice), isolated through a sensitized N-ethyl-N-nitrosourea (ENU) mutagenesis screen for p53 pathway defects, that shares striking phenotypic similarities with high p53 mouse models, including cerebellar ataxia, pancytopenia and epidermal hyperpigmentation. This phenocopy is rescued in a haploinsufficient p53 background. A detailed examination of the bone marrow in these mice identified reduced numbers of haematopoietic stem cells and a p53-dependent c-Kit down-regulation. These studies suggest that reduced Rpl27a increases p53 activity in vivo, further evident with a delay in tumorigenesis in mutant mice. Taken together, these data demonstrate that Rpl27a plays a crucial role in multiple tissues and that disruption of this ribosomal protein affects both development and transformation.
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Terzian T, Torchia EC, Dai D, Robinson SE, Murao K, Stiegmann RA, Gonzalez V, Boyle GM, Powell MB, Pollock PM, Lozano G, Robinson WA, Roop DR, Box NF. p53 prevents progression of nevi to melanoma predominantly through cell cycle regulation. Pigment Cell Melanoma Res 2011; 23:781-94. [PMID: 20849464 DOI: 10.1111/j.1755-148x.2010.00773.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
p53 is the central member of a critical tumor suppressor pathway in virtually all tumor types, where it is silenced mainly by missense mutations. In melanoma, p53 predominantly remains wild type, thus its role has been neglected. To study the effect of p53 on melanocyte function and melanomagenesis, we crossed the ‘high-p53’Mdm4+/− mouse to the well-established TP-ras0/+ murine melanoma progression model. After treatment with the carcinogen dimethylbenzanthracene (DMBA), TP-ras0/+ mice on the Mdm4+/− background developed fewer tumors with a delay in the age of onset of melanomas compared to TP-ras0/+ mice. Furthermore, we observed a dramatic decrease in tumor growth, lack of metastasis with increased survival of TP-ras0/+: Mdm4+/− mice. Thus, p53 effectively prevented the conversion of small benign tumors to malignant and metastatic melanoma. p53 activation in cultured primary melanocyte and melanoma cell lines using Nutlin-3, a specific Mdm2 antagonist, supported these findings. Moreover, global gene expression and network analysis of Nutlin-3-treated primary human melanocytes indicated that cell cycle regulation through the p21WAF1/CIP1 signaling network may be the key anti-melanomagenic activity of p53.
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Affiliation(s)
- Tamara Terzian
- Department of Dermatology and Charles C Gates Center for Regenerative Medicine and Stem Cell Biology, UC Denver, Aurora, CO 80045, USA
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Affiliation(s)
- Neil F Box
- Department of Dermatology and the Charles C. Gates Center for Regenerative Medicine and Stem Cell Biology, University of Colorado Denver Anschutz Medical Campus, Aurora, CO, USA
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Aalborg J, Morelli JG, Mokrohisky ST, Asdigian NL, Byers TE, Dellavalle RP, Box NF, Crane LA. Tanning and increased nevus development in very-light-skinned children without red hair. ACTA ACUST UNITED AC 2009; 145:989-96. [PMID: 19770437 DOI: 10.1001/archdermatol.2009.193] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To examine the relationship between tanning and nevus development in very-light-skinned children. DESIGN Prospective cohort nested within a randomized controlled trial. Skin examinations in 3 consecutive years (2004, 2005, and 2006) included full-body counts of nevi, skin color and tanning measurement using colorimetry, and hair and eye color evaluation by comparison with charts. Telephone interviews of parents provided sun exposure, sun protection, and sunburn history. SETTING Large managed-care organization and private pediatric offices in the Denver, Colorado, metropolitan area. PARTICIPANTS A total of 131 very-light-skinned white children without red hair and 444 darker-skinned white children without red hair born in Colorado in 1998. MAIN OUTCOME MEASURES Full-body nevus counts at ages 6 to 8 years. RESULTS Among very-light-skinned white children, geometric mean numbers of nevi for minimally tanned children were 14.8 at age 6 years; 18.8 at age 7 years; and 22.3 at age 8 years. Mean numbers of nevi for tanned children were 21.2 at age 6 years; 27.9 at age 7 years; and 31.9 at age 8 years. Differences in nevus counts between untanned and tanned children were statistically significant at all ages (P < .05 for all comparisons). The relationship between tanning and number of nevi was independent of the child's hair and eye color, parent-reported sun exposure, and skin phototype. Among darker-skinned white children, there was no relationship between tanning and nevi. CONCLUSIONS Very-light-skinned children who tan (based on objective measurement) develop more nevi than children who do not tan. These results suggest that light-skinned children who develop tans may be increasing their risk for developing melanoma later in life.
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Affiliation(s)
- Jenny Aalborg
- University of Colorado Denver, 13001 E 17th Pl, Aurora, CO 80045, USA
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Liu G, Terzian T, Xiong S, Van Pelt CS, Audiffred A, Box NF, Lozano G. The p53-Mdm2 network in progenitor cell expansion during mouse postnatal development. J Pathol 2008; 213:360-8. [PMID: 17893884 DOI: 10.1002/path.2238] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Mdm2, an E3 ubiquitin ligase, negatively regulates the tumour suppressor p53. Loss of Mdm2 in mice results in p53-dependent apoptosis and embryonic lethality. This phenotype was rescued by the p53(515C) allele, which encodes an apoptosis-deficient p53R172P protein. However, these mice died within 2 weeks of birth, due to a severe impairment of progenitor cell expansion during postnatal haematopoiesis and cerebellar development, leading to p53-dependent cell cycle arrest. Loss of Mdm2 led to phosphorylation of the p53R172P protein, p53R172P stability and activation of the cell cycle inhibitor p21 in proliferating cells, but not in differentiated cells, in multiple tissue compartments. Proliferating cells of epithelial origin were not affected. The haematopoietic and neural defects were alleviated in mice lacking Mdm2 and containing one p53(515C) and one p53-null allele, but spermatogenesis was arrested. These findings establish a crucial role for the p53-Mdm2 network in regulating proliferation and progenitor expansion in many cell lineages and have important implications for the use of drugs that aim to disrupt the p53-Mdm2 interaction.
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Affiliation(s)
- G Liu
- Department of Cancer Genetics, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA.
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Abstract
p53 has a central role in skin pigmentation and may impact on melanoma at all stages, however, as it's mutation frequency in melanoma is low, it's role has been somewhat under-appreciated. During normal skin function, p53 in the keratinocyte is a transducer of the skin tanning signal and an essential component of what is effectively a keratinocyte-melanocyte signaling cycle that regulates skin pigmentation. It is clear that this cycle functions optimally in skin of dark pigmentation. When melanin biosynthesis is genetically disrupted in skin of white complexion, we propose that this cycle operates as a promoter of melanocyte proliferation. The cell autonomous function of p53 in melanocytes is not well described, however, the balance of the evidence suggests that p53 is an effective tumor suppressor and the myriad of mechanisms by which the p53 pathway may be dysregulated in tumors attests to it importance as a tumor suppressor. In this review, we outline the known mechanisms that impair p53 itself and its immediate regulators or target genes during melanomagenesis. Due to the importance of this pathway, it is clear that p53 disruptions may relate directly to a patient's prognosis. This pathway will continue to be a focus of investigation, particularly with respect to targeted experimental chemotherapeutics.
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Affiliation(s)
- Neil F Box
- Department of Dermatology, University of Colorado at Denver, Aurora, CO, USA.
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25
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Abstract
The tumor suppressor p53 is inactivated by multiple mechanisms that include mutations of the p53 gene itself and increased levels of the p53 inhibitors MDM2 and MDM4. Mice lacking Mdm2 or Mdm4 exhibit embryo-lethal phenotypes that are completely rescued by concomitant deletion of p53. Here we show that Mdm2 and Mdm4 haploinsufficiency leads to increased p53 activity, exhibited as increased sensitivity to DNA damage and decreased transformation potential. Moreover, in in vivo tumor development, Emu-myc Mdm4+/- mice show a delayed onset of B-cell lymphomas compared to Emu-myc mice. Additionally, Mdm2+/- Mdm4+/- double-heterozygous mice are not viable and exhibit defects in hematopoiesis and cerebellar development. The defects in Mdm2+/- Mdm4+/- mice are corrected by deletion of a single p53 allele. These findings highlight the exquisite sensitivity of p53 to Mdm2 and Mdm4 levels and suggest that some cell types may be more sensitive to therapeutic drugs that inhibit the Mdm-p53 interaction.
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Affiliation(s)
- Tamara Terzian
- Department of Cancer Genetics, Box 1010, The University of Texas M. D. Anderson Cancer Center, Baylor College of Medicine, 1515 Holcombe Boulevard, Houston, TX 77030, USA
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26
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Duffy DL, Box NF, Chen W, Palmer JS, Montgomery GW, James MR, Hayward NK, Martin NG, Sturm RA. Interactive effects of MC1R and OCA2 on melanoma risk phenotypes. Hum Mol Genet 2003; 13:447-61. [PMID: 14709592 DOI: 10.1093/hmg/ddh043] [Citation(s) in RCA: 205] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The relationships between MC1R gene variants and red hair, skin reflectance, degree of freckling and nevus count were investigated in 2331 adolescent twins, their sibs and parents in 645 twin families. Penetrance of each MC1R variant allele was consistent with an allelic model where effects were multiplicative for red hair but additive for skin reflectance. Of nine MC1R variant alleles assayed, four common alleles were strongly associated with red hair and fair skin (Asp84Glu, Arg151Cys, Arg160Trp and Asp294His), with a further three alleles having low penetrance (Val60Leu, Val92Met and Arg163Gln). These variants were separately combined for the purposes of this analysis and designated as strong 'R' (OR=63.3; 95% CI 31.9-139.6) and weak 'r ' (OR=5.1; 95% CI 2.5-11.3) red hair alleles. Red-haired individuals are predominantly seen in the R/R and R/r groups with 67.1 and 10.8%, respectively. To assess the interaction of the brown eye color gene OCA2 on the phenotypic effects of variant MC1R alleles we included eye color as a covariate, and also genotyped two OCA2 SNPs (Arg305Trp and Arg419Gln), which were confirmed as modifying eye color. MC1R genotype effects on constitutive skin color, freckling and mole count were modified by eye color, but not genotype for these two OCA2 SNPs. This is probably due to the association of these OCA2 SNPs with brown/green not blue eye color. Amongst individuals with a R/R genotype (but not R/r), those who also had brown eyes had a mole count twice that of those with blue eyes. This suggests that other OCA2 polymorphisms influence mole count and remain to be described.
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Affiliation(s)
- David L Duffy
- Queensland Insititute of Medical Research, Brisbane, Australia
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27
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Sturm RA, Duffy DL, Box NF, Newton RA, Shepherd AG, Chen W, Marks LH, Leonard JH, Martin NG. Genetic association and cellular function of MC1R variant alleles in human pigmentation. Ann N Y Acad Sci 2003; 994:348-58. [PMID: 12851335 DOI: 10.1111/j.1749-6632.2003.tb03199.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have examined MC1R variant allele frequencies in the general population of South East Queensland and in a collection of adolescent dizygotic and monozygotic twins and family members to define statistical associations with hair and skin color, freckling, and mole count. Results of these studies are consistent with a linear recessive allelic model with multiplicative penetrance in the inheritance of red hair. Four alleles, D84E, R151C, R160W, and D294H, are strongly associated with red hair and fair skin with multinomial regression analysis showing odds ratios of 63, 118, 50, and 94, respectively. An additional three low-penetrance alleles V60L, V92M, and R163Q have odds ratios 6, 5, and 2 relative to the wild-type allele. To address the cellular effects of MC1R variant alleles in signal transduction, we expressed these receptors in permanently transfected HEK293 cells. Measurement of receptor activity via induction of a cAMP-responsive luciferase reporter gene found that the R151C and R160W receptors were active in the presence of NDP-MSH ligand, but at much reduced levels compared with that seen with the wild-type receptor. The ability to stimulate phosphorylation of the cAMP response element binding protein (CREB) transcription factor was also apparent in all stimulated MC1R variant allele-expressing HEK293 cell extracts as assessed by immunoblotting. In contrast, human melanoma cell lines showed wide variation in the their ability to undergo cAMP-mediated CREB phosphorylation. Culture of human melanocytes of known MC1R genotype may provide the best experimental approach to examine the functional consequences for each MC1R variant allele. With this objective, we have established more than 300 melanocyte cell strains of defined MC1R genotype.
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Affiliation(s)
- R A Sturm
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia.
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28
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Sturm RA, Duffy DL, Box NF, Chen W, Smit DJ, Brown DL, Stow JL, Leonard JH, Martin NG. The role of melanocortin-1 receptor polymorphism in skin cancer risk phenotypes. Pigment Cell Res 2003; 16:266-72. [PMID: 12753400 DOI: 10.1034/j.1600-0749.2003.00041.x] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We have examined melanocortin-1 receptor (MC1R) variant allele frequencies in the general population and in a collection of adolescent dizygotic and monozygotic twins to determine statistical associations of pigmentation phenotypes with increased skin cancer risk. This included hair and skin color, freckling, mole count and sun exposed skin reflectance. Nine variants were studied and designated as either strong R (OR = 63; 95% CI 32-140) or weak r (OR = 5; 95% CI 3-11) red hair alleles. Penetrance of each MC1R variant allele was consistent with an allelic model where effects were multiplicative for red hair but additive for skin reflectance. To assess the interaction of the brown eye color gene BEY2/OCA2 on the phenotypic effects of variant MC1R alleles we imputed OCA2 genotype in the twin collection. A modifying effect of OCA2 on MC1R variant alleles was seen on constitutive skin color, freckling and mole count. In order to study the individual effects of these variants on pigmentation phenotype we have established a series of human primary melanocyte strains genotyped for the MC1R receptor. These include strains which are MC1R wild-type consensus, variant heterozygotes, and homozygotes for strong R alleles Arg151Cys and Arg160Trp. Ultrastructural analysis demonstrated that only consensus strains contained stage III and IV melanosomes in their terminal dendrites whereas Arg151Cys and Arg160Trp homozygous strains contained only immature stage I and II melanosomes. Such genetic association studies combined with the functional analysis of MC1R variant alleles in melanocytic cells should provide a link in understanding the association between pigmentary phototypes and skin cancer risk.
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Affiliation(s)
- Richard A Sturm
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia.
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29
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Smith AG, Box NF, Marks LH, Chen W, Smit DJ, Wyeth JR, Huttley GA, Easteal S, Sturm RA. The human melanocortin-1 receptor locus: analysis of transcription unit, locus polymorphism and haplotype evolution. Gene 2001; 281:81-94. [PMID: 11750130 DOI: 10.1016/s0378-1119(01)00791-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The complete sequence of the MC1R locus has been assembled, the coding region of the gene is intronless and placed within a 12 kb region flanked by the NULP1 and TUBB4 genes. The immediate promoter region has an E-box site with homology to the M-box consensus known to bind the microphthalmia transcription factor (MITF); however, promoter deletion analysis and transactivation studies have failed to show activation through this element by MITF. Polymorphism within the coding region, immediate 5' promoter region and a variable number tandem repeat (VNTR) minisatellite within the locus have been examined in a collection of Caucasian families and African individuals. Haplotype analysis shows linkage disequilibrium between the VNTR and MC1R coding region red hair variant alleles which can be used to estimate the age of these missense changes. Assuming a mean VNTR mutation rate of 1% and a star phylogeny, we estimate the Arg151Cys variant arose 7500 years before the present day, suggesting these variants may have arisen in the Caucasian population more recently than previously thought.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Blotting, Northern
- Cells, Cultured
- DNA/chemistry
- DNA/genetics
- DNA/isolation & purification
- Evolution, Molecular
- Gene Expression
- Haplotypes
- HeLa Cells
- Humans
- Luciferases/genetics
- Luciferases/metabolism
- Male
- Melanocytes/cytology
- Melanocytes/metabolism
- Mice
- Molecular Sequence Data
- Poly A/genetics
- Polymorphism, Genetic
- Promoter Regions, Genetic/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Corticotropin/genetics
- Receptors, Melanocortin
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
- Transcription Initiation Site
- Transcription, Genetic
- Tumor Cells, Cultured
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Affiliation(s)
- A G Smith
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, Brisbane, Qld 4072, Australia
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30
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Abstract
The synthesis of the visible pigment melanin by the melanocyte cell is the basis of the human pigmentary system, those genes directing the formation, transport and distribution of the specialised melanosome organelle in which melanin accumulates can legitimately be called pigmentation genes. The genes involved in this process have been identified through comparative genomic studies of mouse coat colour mutations and by the molecular characterisation of human hypopigmentary genetic diseases such as OCA1 and OCA2. The melanocyte responds to the peptide hormones alpha-MSH or ACTH through the MC1R G-protein coupled receptor to stimulate melanin production through induced maturation or switching of melanin type. The pheomelanosome, containing the key enzyme of the pathway tyrosinase, produces light red/yellowish melanin, whereas the eumelanosome produces darker melanins via induction of additional TYRP1, TYRP2, SILV enzymes, and the P-protein. Intramelanosomal pH governed by the P-protein may act as a critical determinant of tyrosinase enzyme activity to control the initial step in melanin synthesis or TYRP complex formation to facilitate melanogenesis and melanosomal maturation. The search for genetic variation in these candidate human pigmentation genes in various human populations has revealed high levels of polymorphism in the MC1R locus, with over 30 variant alleles so far identified. Functional correlation of MC1R alleles with skin and hair colour provides evidence that this receptor molecule is a principle component underlying normal human pigment variation.
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Affiliation(s)
- R A Sturm
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia.
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31
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Box NF, Duffy DL, Chen W, Stark M, Martin NG, Sturm RA, Hayward NK. MC1R genotype modifies risk of melanoma in families segregating CDKN2A mutations. Am J Hum Genet 2001; 69:765-73. [PMID: 11500805 PMCID: PMC1226062 DOI: 10.1086/323412] [Citation(s) in RCA: 246] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2001] [Accepted: 07/19/2001] [Indexed: 11/03/2022] Open
Abstract
Mutations in the exons of the cyclin-dependent kinase inhibitor gene CDKN2A are melanoma-predisposition alleles which have high penetrance, although they have low population frequencies. In contrast, variants of the melanocortin-1 receptor gene, MC1R, confer much lower melanoma risk but are common in European populations. Fifteen Australian CDKN2A mutation-carrying melanoma pedigrees were assessed for MC1R genotype, to test for possible modifier effects on melanoma risk. A CDKN2A mutation in the presence of a homozygous consensus MC1R genotype had a raw penetrance of 50%, with a mean age at onset of 58.1 years. When an MC1R variant allele was also present, the raw penetrance of the CDKN2A mutation increased to 84%, with a mean age at onset of 37.8 years (P=.01). The presence of a CDKN2A mutation gave a hazard ratio of 13.35, and the hazard ratio of 3.72 for MC1R variant alleles was also significant. The impact of MC1R variants on risk of melanoma was mediated largely through the action of three common alleles, Arg151Cys, Arg160Trp, and Asp294His, that have previously been associated with red hair, fair skin, and skin sensitivity to ultraviolet light.
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Affiliation(s)
- Neil F. Box
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - David L. Duffy
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - Wei Chen
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - Mitchell Stark
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - Nicholas G. Martin
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - Richard A. Sturm
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
| | - Nicholas K. Hayward
- Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, and Queensland Institute of Medical Research, Brisbane, Australia
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32
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Abstract
To determine whether the Agouti Signalling Protein (ASP) gene is associated with skin and hair coloration in humans, the complete coding region of ASP was screened for polymorphisms. Analysis of ASP in Caucasian, African-American, Spanish Basque, Hispanic, Apache and Australian Aboriginal populations revealed no amino acid substitutions. A single polymorphism in the 3' untranslated region occurred at a frequency of 0.2 in African-Americans. Variants of the Melanocortin 1 Receptor (MC1R) gene have been found to be associated with red hair and fair skin in humans. Red hair individuals are usually compound heterozygotes or homozygous for one of a number of MC1R polymorphisms associated with red hair. Some individuals however are heterozygous for only one of these polymorphisms and dizygotic twins can be concordant for MC1R variants but discordant for hair colour. A recent study has also identified rare redheads carrying no MC1R variants indicating that polymorphisms of the human MC1R gene are required but not sufficient for the red hair phenotype. To address the question of whether ASP also contributes to the red hair phenotype, individuals previously identified as having unexpected MC1R genotypes were screened for polymorphisms at the ASP locus. No polymorphisms were found in any of these individuals. Results indicate that the human ASP gene is unlikely to function in normal human pigmentation in the same way as MC1R.
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Affiliation(s)
- J Voisey
- CRC for Diagnostic Technologies, Queensland University of Technology, Brisbane, Australia
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33
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Box NF, Duffy DL, Irving RE, Russell A, Chen W, Griffyths LR, Parsons PG, Green AC, Sturm RA. Melanocortin-1 receptor genotype is a risk factor for basal and squamous cell carcinoma. J Invest Dermatol 2001; 116:224-9. [PMID: 11179997 DOI: 10.1046/j.1523-1747.2001.01224.x] [Citation(s) in RCA: 391] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
MC1R gene variants have previously been associated with red hair and fair skin color, moreover skin ultraviolet sensitivity and a strong association with melanoma has been demonstrated for three variant alleles that are active in influencing pigmentation: Arg151Cys, Arg160Trp, and Asp294His. This study has confirmed these pigmentary associations with MC1R genotype in a collection of 220 individuals drawn from the Nambour community in Queensland, Australia, 111 of whom were at high risk and 109 at low risk of basal cell carcinoma and squamous cell carcinoma. Comparative allele frequencies for nine MC1R variants that have been reported in the Caucasian population were determined for these two groups, and an association between prevalence of basal cell carcinoma, squamous cell carcinoma, solar keratosis and the same three active MC1R variant alleles was demonstrated [odds ratio = 3.15 95% CI (1.7, 5.82)]. Three other commonly occurring variant alleles: Val60Leu, Val92Met, and Arg163Gln were identified as having a minimal impact on pigmentation phenotype as well as basal cell carcinoma and squamous cell carcinoma risk. A significant heterozygote effect was demonstrated where individuals carrying a single MC1R variant allele were more likely to have fair and sun sensitive skin as well as carriage of a solar lesion when compared with those individuals with a consensus MC1R genotype. After adjusting for the effects of pigmentation on the association between MC1R variant alleles and basal cell carcinoma and squamous cell carcinoma risk, the association persisted, confirming that presence of at least one variant allele remains informative in terms of predicting risk for developing a solar-induced skin lesion beyond that information wained through observation of pigmentation phenotype.
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Affiliation(s)
- N F Box
- Center for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia
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34
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Palmer JS, Duffy DL, Box NF, Aitken JF, O'Gorman LE, Green AC, Hayward NK, Martin NG, Sturm RA. Melanocortin-1 receptor polymorphisms and risk of melanoma: is the association explained solely by pigmentation phenotype? Am J Hum Genet 2000; 66:176-86. [PMID: 10631149 PMCID: PMC1288324 DOI: 10.1086/302711] [Citation(s) in RCA: 641] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Risk of cutaneous malignant melanoma (CMM) is increased in sun-exposed whites, particularly those with a pale complexion. This study was designed to investigate the relationship of the melanocortin-1 receptor (MC1R) genotype to CMM risk, controlled for pigmentation phenotype. We report the occurrence of five common MC1R variants in an Australian population-based sample of 460 individuals with familial and sporadic CMM and 399 control individuals-and their relationship to such other risk factors as skin, hair, and eye color; freckling; and nevus count. There was a strong relationship between MC1R variants and hair color and skin type. Moreover, MC1R variants were found in 72% of the individuals with CMM, whereas only 56% of the control individuals carried at least one variant (P<.001), a finding independent of strength of family history of melanoma. Three active alleles (Arg151Cys, Arg160Trp, and Asp294His), previously associated with red hair, doubled CMM risk for each additional allele carried (odds ratio 2.0; 95% confidence interval 1. 6-2.6). No such independent association could be demonstrated with the Val60Leu and Asp84Glu variants. Among pale-skinned individuals alone, this association between CMM and MC1R variants was absent, but it persisted among those reporting a medium or olive/dark complexion. We conclude that the effect that MC1R variant alleles have on CMM is partly mediated via determination of pigmentation phenotype and that these alleles may also negate the protection normally afforded by darker skin coloring in some members of this white population.
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Affiliation(s)
- James S. Palmer
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - David L. Duffy
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Neil F. Box
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Joanne F. Aitken
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Louise E. O'Gorman
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Adele C. Green
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Nicholas K. Hayward
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Nicholas G. Martin
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
| | - Richard A. Sturm
- Centre for Molecular and Cellular Biology and Queensland Institute of Medical Research and Joint Genetics Program, University of Queensland, Brisbane, Australia
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35
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Abstract
There is no doubt that visual impressions of body form and color are important in the interactions within and between human communities. Remarkably, it is the levels of just one chemically inert and stable visual pigment known as melanin that is responsible for producing all shades of humankind. Major human genes involved in its formation have been identified largely using a comparative genomics approach and through the molecular analysis of the pigmentary process that occurs within the melanocyte. Three classes of genes have been examined for their contribution to normal human color variation through the production of hypopigmented phenotypes or by genetic association with skin type and hair color. The MSH cell surface receptor and the melanosomal P-protein are the two most obvious candidate genes influencing variation in pigmentation phenotype, and may do so by regulating the levels and activities of the melanogenic enzymes tyrosinase, TRP-1 and TRP-2.
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Affiliation(s)
- R A Sturm
- Centre for Molecular and Cellular Biology, University of Queensland, Brisbane, Australia.
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36
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Box NF, Wyeth JR, Mayne CJ, O'Gorman LE, Martin NG, Sturm RA. Complete sequence and polymorphism study of the human TYRP1 gene encoding tyrosinase-related protein 1. Mamm Genome 1998; 9:50-3. [PMID: 9434945 DOI: 10.1007/s003359900678] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The complete 24,667 nucleotide sequence spanning the human TYRP1 gene has been determined from the inserts of two overlapping lambda clones. A LINE-1 repeat element is immediately adjacent to and may demarcate the immediate 5' promoter region of the gene. A search for polymorphism within the seven TYRP1 coding exons has been performed by an RNase mismatch detection procedure. Analysis of the TYRP1 gene in 100 Caucasian individuals of varying hair color has found no amino acid sequence variation nor revealed any hemizygous mutant allele in the hypopigmented phenotype of two 9p- syndrome patients.
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Affiliation(s)
- N F Box
- Centre for Molecular and Cellular Biology, University of Queensland, Brisbane, Australia
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37
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Manga P, Kromberg JG, Box NF, Sturm RA, Jenkins T, Ramsay M. Rufous oculocutaneous albinism in southern African Blacks is caused by mutations in the TYRP1 gene. Am J Hum Genet 1997; 61:1095-101. [PMID: 9345097 PMCID: PMC1716031 DOI: 10.1086/301603] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Oculocutaneous albinism (OCA) is the most common autosomal recessive disorder among southern African Blacks. There are three forms that account for almost all OCA types in this region. Tyrosinase-positive OCA (OCA2), which is the most common, affects approximately 1/3,900 newborns and has a carrier frequency of approximately 1/33. It is caused by mutations in the P gene on chromosome 15. Brown OCA (BOCA) and rufous OCA (ROCA) account for the majority of the remaining phenotypes. The prevalence of BOCA is unknown, but for ROCA it is approximately 1/8,500. Linkage analysis performed on nine ROCA families showed that ROCA was linked to an intragenic marker at the TYRP1 locus (maximum LOD score = 3.80 at straight theta=.00). Mutation analysis of 19 unrelated ROCA individuals revealed a nonsense mutation at codon 166 (S166X) in 17 (45%) of 38 ROCA chromosomes, and a second mutation (368delA) was found in an additional 19 (50%) of 38 chromosomes; mutations were not identified in the remaining 2 ROCA chromosomes. In one family, two siblings with a phenotypically unclassified form of albinism were found to be compound heterozygotes for mutations (S166X/368delA) at the TYRP1 locus and were heterozygous for a common 2.7-kb deletion in the P gene. These findings have highlighted the influence of genetic background on phenotype, in which the genotype at one locus can be influenced by the genotype at a second locus, leading to a modified phenotype. ROCA, which in southern African Blacks is caused by mutations in the TYRP1 gene, therefore should be referred to as "OCA3," since this is the third locus that has been shown to cause an OCA phenotype in humans.
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Affiliation(s)
- P Manga
- Department of Human Genetics, South African Institute for Medical Research, Johannesburg, South Africa
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38
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Box NF, Wyeth JR, O'Gorman LE, Martin NG, Sturm RA. Characterization of melanocyte stimulating hormone receptor variant alleles in twins with red hair. Hum Mol Genet 1997; 6:1891-7. [PMID: 9302268 DOI: 10.1093/hmg/6.11.1891] [Citation(s) in RCA: 235] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The association between MSHR coding region variation and hair colour in humans has been examined by genotyping 25 red haired and 62 non-red Caucasians, all of whom were 12 years of age and members of a twin pair study. Twelve amino acid substitutions were seen at 11 different sites, nine of these being newly described MSHR variants. The previously reported Val92Met allele shows no association with hair colour, but the three alleles Arg151Cys, Arg160Trp and Asp294His were associated with red hair and one Val60Leu variant was most frequent in fair/blonde and light brown hair colours. Variant MSHR genotypes are associated with lighter skin types and red hair (P < 0.001). However, comparison of the MSHR genotypes in dizygotic twin pairs discordant for red hair colour indicates that the MSHR gene cannot be solely responsible for the red hair phenotype, since five of 13 pairs tested had both haplotypes identical by state (with three of the five having both identical by descent). Rather, it is likely that additional modifier genes exist, making variance in the MSHR gene necessary but not always sufficient, for red hair production.
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Affiliation(s)
- N F Box
- Centre for Molecular and Cellular Biology, University of Queensland, Brisbane, Australia
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39
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Sturm RA, Smith AG, Smit SE, Smit DJ, Box NF, Wyeth JR, Parsons PG. Gene function in human pigmentation and melanocyte growth. Melanoma Res 1997. [DOI: 10.1097/00008390-199706001-00030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Sturm RA, O'Sullivan BJ, Box NF, Smith AG, Smit SE, Puttick ER, Parsons PG, Dunn IS. Chromosomal structure of the human TYRP1 and TYRP2 loci and comparison of the tyrosinase-related protein gene family. Genomics 1995; 29:24-34. [PMID: 8530077 DOI: 10.1006/geno.1995.1211] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The structures of the human tyrosinase-related protein genes TYRP1 and TYRP2 have been determined and compared with that of the tyrosinase gene (TYR). The TYRP1 protein is encoded in 7 exons spread over 24 kb of genomic DNA. Characterization of a 55-kb contig encompassing the human TYRP2 locus reveals that the protein coding region is divided into 8 exons. All three members of the TYRP gene family share a common C-terminal membrane spanning exon. Examination of the position of other intron junctions suggests that TYRP1 was derived from a TYR duplication and then was itself duplicated to give rise to the TYRP2 gene. The evidence also suggests that at least some of the introns within the TYR, TYRP1, and TYRP2 coding regions were gained after duplication and that intron slippage is unlikely to have occurred.
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Affiliation(s)
- R A Sturm
- Centre for Molecular and Cellular Biology, University of Queensland, Australia
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Affiliation(s)
- N F Box
- Centre for Molecular Biology and Biotechnology, University of Queensland, Brisbane, Australia
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