1
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Augustin RC, Luke JJ. Rapidly Evolving Pre- and Post-surgical Systemic Treatment of Melanoma. Am J Clin Dermatol 2024; 25:421-434. [PMID: 38409643 DOI: 10.1007/s40257-024-00852-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2024] [Indexed: 02/28/2024]
Abstract
With the development of effective BRAF-targeted and immune-checkpoint immunotherapies for metastatic melanoma, clinical trials are moving these treatments into earlier adjuvant and perioperative settings. BRAF-targeted therapy is a standard of care in resected stage III-IV melanoma, while anti-programmed death-1 (PD1) immunotherapy is now a standard of care option in resected stage IIB through IV disease. With both modalities, recurrence-free survival and distant-metastasis-free survival are improved by a relative 35-50%, yet no improvement in overall survival has been demonstrated. Neoadjuvant anti-PD1 therapy improves event-free survival by approximately an absolute 23%, although improvements in overall survival have yet to be demonstrated. Understanding which patients are most likely to recur and which are most likely to benefit from treatment is now the highest priority question in the field. Biomarker analyses, such as gene expression profiling of the primary lesion and circulating DNA, are preliminarily exciting as potential biomarkers, though each has drawbacks. As in the setting of metastatic disease, markers that inform positive outcomes include interferon-γ gene expression, PD-L1, and high tumor mutational burden, while negative predictors of outcome include circulating factors such as lactate dehydrogenase, interleukin-8, and C-reactive protein. Integrating and validating these markers into clinically relevant models is thus a high priority. Melanoma therapeutics continues to advance with combination adjuvant approaches now investigating anti-PD1 with lymphocyte activation gene 3 (LAG3), T-cell immunoreceptor with Ig and ITIM domains (TIGIT), and individualized neoantigen therapies. How this progress will be integrated into the management of a unique patient to reduce recurrence, limit toxicity, and avoid over-treatment will dominate clinical research and patient care over the next decade.
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Affiliation(s)
- Ryan C Augustin
- UPMC Hillman Cancer Center, 5150 Centre Ave. Room 1.27C, Pittsburgh, PA, 15232, USA
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Division of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Jason J Luke
- UPMC Hillman Cancer Center, 5150 Centre Ave. Room 1.27C, Pittsburgh, PA, 15232, USA.
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
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2
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Gorlov IP, Conway K, Edmiston SN, Parrish EA, Hao H, Amos CI, Tsavachidis S, Gorlova OY, Begg C, Hernando E, Cheng C, Shen R, Orlow I, Luo L, Ernstoff MS, Kuan PF, Ollila DW, Tsai YS, Berwick M, Thomas NE. Methylation of nonessential genes in cutaneous melanoma - Rule Out hypothesis. Melanoma Res 2023; 33:163-172. [PMID: 36805567 PMCID: PMC10148896 DOI: 10.1097/cmr.0000000000000881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Differential methylation plays an important role in melanoma development and is associated with survival, progression and response to treatment. However, the mechanisms by which methylation promotes melanoma development are poorly understood. The traditional explanation of selective advantage provided by differential methylation postulates that hypermethylation of regulatory 5'-cytosine-phosphate-guanine-3' dinucleotides (CpGs) downregulates the expression of tumor suppressor genes and therefore promotes tumorigenesis. We believe that other (not necessarily alternative) explanations of the selective advantages of methylation are also possible. Here, we hypothesize that melanoma cells use methylation to shut down transcription of nonessential genes - those not required for cell survival and proliferation. Suppression of nonessential genes allows tumor cells to be more efficient in terms of energy and resource usage, providing them with a selective advantage over the tumor cells that transcribe and subsequently translate genes they do not need. We named the hypothesis the Rule Out (RO) hypothesis. The RO hypothesis predicts higher methylation of CpGs located in regulatory regions (CpG islands) of nonessential genes. It also predicts the higher methylation of regulatory CpGs linked to nonessential genes in melanomas compared to nevi and lower expression of nonessential genes in malignant (derived from melanoma) versus normal (derived from nonaffected skin) melanocytes. The analyses conducted using in-house and publicly available data found that all predictions derived from the RO hypothesis hold, providing observational support for the hypothesis.
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Affiliation(s)
- Ivan P Gorlov
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Kathleen Conway
- Department of Dermatology, University of North Carolina
- Department of Epidemiology
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Sharon N Edmiston
- Department of Dermatology, University of North Carolina
- Department of Epidemiology
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Eloise A Parrish
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Applied Mathematics and Statistics, State University of New York, Stony Brook
| | - Honglin Hao
- Department of Dermatology, University of North Carolina
| | | | | | - Olga Y Gorlova
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Colin Begg
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Eva Hernando
- Department of Pathology, New York University School of Medicine, New York
| | - Chao Cheng
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Ronglai Shen
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Irene Orlow
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York
| | - Li Luo
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Maxico
| | - Marc S Ernstoff
- Roswell Park Comprehensive Cancer Center, Elm and Carlton, Buffalo
| | - Pei Fen Kuan
- Department of Applied Mathematics and Statistics, State University of New York, Stony Brook and
| | - David W Ollila
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Surgery, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Yihsuan S Tsai
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Marianne Berwick
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Maxico
| | - Nancy E Thomas
- Department of Dermatology, University of North Carolina
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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3
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Ding L, Gosh A, Lee DJ, Emri G, Huss WJ, Bogner PN, Paragh G. Prognostic biomarkers of cutaneous melanoma. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2022; 38:418-434. [PMID: 34981569 DOI: 10.1111/phpp.12770] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/02/2021] [Accepted: 12/30/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND/PURPOSE Melanomas account for only approximately 4% of diagnosed skin cancers in the United States but are responsible for the majority of deaths caused by skin cancer. Both genetic factors and ultraviolet (UV) radiation exposure play a role in the development of melanoma. Although melanomas have a strong propensity to metastasize when diagnosed late, melanomas that are diagnosed and treated early pose a low mortality risk. In particular, the identification of patients with increased metastatic risk, who may benefit from early adjuvant therapies, is crucial, especially given the advent of new melanoma treatments. However, the accuracy of classic clinical and histological variables, including the Breslow thickness, presence of ulceration, and lymph node status, might not be sufficient to identify such individuals. Thus, there is a need for the development of additional prognostic melanoma biomarkers that can improve early attempts to stratify melanoma patients and reliably identify high-risk subgroups with the aim of providing effective personalized therapies. METHODS In our current work, we discuss and assess emerging primary melanoma tumor biomarkers and prognostic circulating biomarkers. RESULTS Several promising biomarkers show prognostic value (eg, exosomal MIA (ie, melanoma inhibitory activity), serum S100B, AMLo signatures, and mRNA signatures); however, the scarcity of reliable data precludes the use of these biomarkers in current clinical applications. CONCLUSION Further research is needed on several promising biomarkers for melanoma. Large-scale studies are warranted to facilitate the clinical translation of prognostic biomarker applications for melanoma in personalized medicine.
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Affiliation(s)
- Liang Ding
- Department of Dermatology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Pathology, Buffalo General Medical Center, State University of New York, Buffalo, New York, USA
| | - Alexandra Gosh
- Department of Dermatology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Delphine J Lee
- Division of Dermatology, Department of Medicine, Harbor-UCLA Medical Center, Torrance, California, USA
- Division of Dermatology, Department of Medicine, The Lundquist Institute, Torrance, California, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Gabriella Emri
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Wendy J Huss
- Department of Dermatology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Paul N Bogner
- Department of Dermatology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
| | - Gyorgy Paragh
- Department of Dermatology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York, USA
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4
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Cardelli M, Doorn RV, Larcher L, Donato MD, Piacenza F, Pierpaoli E, Giacconi R, Malavolta M, Rachakonda S, Gruis NA, Molven A, Andresen PA, Pjanova D, van den Oord JJ, Provinciali M, Nagore E, Kumar R. Association of HERV-K and LINE-1 hypomethylation with reduced disease-free survival in melanoma patients. Epigenomics 2020; 12:1689-1706. [PMID: 33125285 DOI: 10.2217/epi-2020-0127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To evaluate CpG methylation of long interspersed nuclear elements 1 (LINE-1) and human endogenous retrovirus K (HERV-K) retroelements as potential prognostic biomarkers in cutaneous melanoma. Materials & methods: Methylation of HERV-K and LINE-1 retroelements was assessed in resected melanoma tissues from 82 patients ranging in age from 14 to 88 years. In addition, nevi from eight patients were included for comparison with nonmalignant melanocytic lesions. Results: Methylation levels were lower in melanomas than in nevi. HERV-K and LINE-1 methylation were decreased in melanoma patients with clinical parameters associated with adverse prognosis, while they were independent of age and gender. Hypomethylation of HERV-K (but not LINE-1) was an independent predictor of reduced disease-free survival. Conclusion: HERV-K hypomethylation can be a potential independent biomarker of melanoma recurrence.
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Affiliation(s)
- Maurizio Cardelli
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Remco van Doorn
- Department of Dermatology, Leiden University Medical Center, 2300RC Leiden, The Netherlands
| | - Lares Larcher
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Michela Di Donato
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Elisa Pierpaoli
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Robertina Giacconi
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Marco Malavolta
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Sivaramakrishna Rachakonda
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany.,Division of Functional Genome Analysis, German Cancer Research Center, 69120 Heidelberg, Germany
| | - Nelleke A Gruis
- Department of Dermatology, Leiden University Medical Center, 2300RC Leiden, The Netherlands
| | - Anders Molven
- Gade Laboratory for Pathology, Department of Clinical Medicine, University of Bergen, N-5020 Bergen, Norway.,Department of Pathology, Haukeland University Hospital, N-5021 Bergen, Norway
| | - Per Arne Andresen
- Department of Pathology, Oslo University Hospital, Rikshospitalet, 0424 Oslo, Norway
| | - Dace Pjanova
- Latvian Biomedical Research & Study Centre, LV-1067 Riga, Latvia
| | | | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific Technological Area, IRCCS INRCA, 60121 Ancona, Italy
| | - Eduardo Nagore
- Department of Dermatology, Instituto Valenciano de Oncología, 46009 València, Spain
| | - Rajiv Kumar
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany.,Division of Functional Genome Analysis, German Cancer Research Center, 69120 Heidelberg, Germany
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5
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Yamamoto Y, Matsusaka K, Fukuyo M, Rahmutulla B, Matsue H, Kaneda A. Higher methylation subtype of malignant melanoma and its correlation with thicker progression and worse prognosis. Cancer Med 2020; 9:7194-7204. [PMID: 32406600 PMCID: PMC7541157 DOI: 10.1002/cam4.3127] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 04/08/2020] [Accepted: 04/23/2020] [Indexed: 01/12/2023] Open
Abstract
Malignant melanoma (MM) is the most life‐threatening disease among all skin malignancies, and recent genome‐wide studies reported BRAF, RAS, and NF1 as the most frequently mutated driver genes. While epigenetic aberrations are known to contribute to the oncogenic activity seen in various cancers, their role in MM has not been fully investigated. To investigate the role of epigenetic aberrations in MM, we performed genome‐wide DNA methylation analysis of 51 clinical MM samples using Infinium 450k beadarray. Hierarchical clustering analysis stratified MM into two DNA methylation epigenotypes: high‐ and low‐methylation subgroups. Tumor thickness was significantly greater in case of high‐methylation tumors than low‐methylation tumors (8.3 ± 5.3 mm vs 4.5 ± 2.9 mm, P = .003). Moreover, prognosis was significantly worse in high‐methylation cases (P = .03). Twenty‐seven genes were found to undergo significant and frequent hypermethylation in high‐methylation subgroup, where TFPI2 was identified as the most frequently hypermethylated gene. MM cases with lower expression levels of TFPI2 showed significantly worse prognosis (P = .001). Knockdown of TFPI2 in two MM cell lines, CHL‐1 and G361, resulted in significant increases of cell proliferation and invasion. These indicate that MM can be stratified into at least two different epigenetic subgroups, that the MM subgroup with higher DNA methylation shows a more progressive phenotype, and that methylation of TFPI2 may contribute to the tumor progression of MM.
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Affiliation(s)
- Yosuke Yamamoto
- Department of Dermatology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Keisuke Matsusaka
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Masaki Fukuyo
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Genome Research and Development, Kazusa DNA Research Institute, Chiba, Japan
| | - Bahityar Rahmutulla
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroyuki Matsue
- Department of Dermatology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Atsushi Kaneda
- Department of Molecular Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
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6
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Pradhan D, Jour G, Milton D, Vasudevaraja V, Tetzlaff MT, Nagarajan P, Curry JL, Ivan D, Long L, Ding Y, Ezhilarasan R, Sulman EP, Diab A, Hwu WJ, Prieto VG, Torres-Cabala CA, Aung PP. Aberrant DNA Methylation Predicts Melanoma-Specific Survival in Patients with Acral Melanoma. Cancers (Basel) 2019; 11:cancers11122031. [PMID: 31888295 PMCID: PMC6966546 DOI: 10.3390/cancers11122031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/06/2019] [Accepted: 12/12/2019] [Indexed: 02/06/2023] Open
Abstract
Acral melanoma (AM) is a rare, aggressive type of cutaneous melanoma (CM) with a distinct genetic profile. We aimed to identify a methylome signature distinguishing primary acral lentiginous melanoma (PALM) from primary non-lentiginous AM (NALM), metastatic ALM (MALM), primary non-acral CM (PCM), and acral nevus (AN). A total of 22 PALM, nine NALM, 10 MALM, nine PCM, and three AN were subjected to genome-wide methylation analysis using the Illumina Infinium Methylation EPIC array interrogating 866,562 CpG sites. A prominent finding was that the methylation profiles of PALM and NALM were distinct. Four of the genes most differentially methylated between PALM and NALM or MALM were HHEX, DIPK2A, NELFB, and TEF. However, when primary AMs (PALM + NALM) were compared with MALM, IFITM1 and SIK3 were the most differentially methylated, highlighting their pivotal role in the metastatic potential of AMs. Patients with NALM had significantly worse disease-specific survival (DSS) than patients with PALM. Aberrant methylation was significantly associated with aggressive clinicopathologic parameters and worse DSS. Our study emphasizes the importance of distinguishing the two epigenetically distinct subtypes of AM. We also identified novel epigenetic prognostic biomarkers that may serve to risk-stratify patients with AM and may be leveraged for the development of targeted therapies.
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Affiliation(s)
- Dinesh Pradhan
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
| | - George Jour
- Department of Pathology and Dermatology, NYU Langone Medical Center, New York, NY 10016, USA; (G.J.); (V.V.)
| | - Denái Milton
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Varshini Vasudevaraja
- Department of Pathology and Dermatology, NYU Langone Medical Center, New York, NY 10016, USA; (G.J.); (V.V.)
| | - Michael T. Tetzlaff
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Department of Translational and Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Priyadharsini Nagarajan
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
| | - Jonathan L. Curry
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Doina Ivan
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lihong Long
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
| | - Yingwen Ding
- Department of Radiation Oncology, NYU Langone School of Medicine, New York, NY 10016, USA; (Y.D.); (R.E.); (E.P.S.)
| | - Ravesanker Ezhilarasan
- Department of Radiation Oncology, NYU Langone School of Medicine, New York, NY 10016, USA; (Y.D.); (R.E.); (E.P.S.)
| | - Erik P. Sulman
- Department of Radiation Oncology, NYU Langone School of Medicine, New York, NY 10016, USA; (Y.D.); (R.E.); (E.P.S.)
| | - Adi Diab
- Department of Melanoma Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (A.D.); (W.-J.H.)
| | - Wen-Jen Hwu
- Department of Melanoma Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (A.D.); (W.-J.H.)
| | - Victor G. Prieto
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Carlos Antonio Torres-Cabala
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Correspondence: (C.A.T.-C.); (P.P.A.); Tel.: +713-752-2351 (C.A.T.-C.); +713-794-4951 (P.P.A.)
| | - Phyu P. Aung
- Department of Pathology, Section of Dermatopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; (D.P.); (M.T.T.); (P.N.); (J.L.C.); (D.I.); (V.G.P.)
- Correspondence: (C.A.T.-C.); (P.P.A.); Tel.: +713-752-2351 (C.A.T.-C.); +713-794-4951 (P.P.A.)
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7
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Desjobert C, Carrier A, Delmas A, Marzese DM, Daunay A, Busato F, Pillon A, Tost J, Riond J, Favre G, Etievant C, Arimondo PB. Demethylation by low-dose 5-aza-2'-deoxycytidine impairs 3D melanoma invasion partially through miR-199a-3p expression revealing the role of this miR in melanoma. Clin Epigenetics 2019; 11:9. [PMID: 30651148 PMCID: PMC6335767 DOI: 10.1186/s13148-018-0600-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 12/17/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Efficient treatments against metastatic melanoma dissemination are still lacking. Here, we report that low-cytotoxic concentrations of 5-aza-2'-deoxycytidine, a DNA demethylating agent, prevent in vitro 3D invasiveness of metastatic melanoma cells and reduce lung metastasis formation in vivo. RESULTS We unravelled that this beneficial effect is in part due to MIR-199A2 re-expression by promoter demethylation. Alone, this miR showed an anti-invasive and anti-metastatic effect. Throughout integration of micro-RNA target prediction databases with transcriptomic analysis after 5-aza-2'-deoxycytidine treatments, we found that miR-199a-3p downregulates set of genes significantly involved in invasion/migration processes. In addition, analysis of data from melanoma patients showed a stage- and tissue type-dependent modulation of MIR-199A2 expression by DNA methylation. CONCLUSIONS Thus, our data suggest that epigenetic- and/or miR-based therapeutic strategies can be relevant to limit metastatic dissemination of melanoma.
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Affiliation(s)
- Cécile Desjobert
- FRE no. 3600 CNRS, Epigenetic Targeting of Cancer (ETaC), Toulouse, France
| | - Arnaud Carrier
- FRE no. 3600 CNRS, Epigenetic Targeting of Cancer (ETaC), Toulouse, France
| | - Audrey Delmas
- Cancer Research Center of Toulouse, CRCT, Toulouse, France
| | - Diego M Marzese
- Department of Translational Molecular Medicine, John Wayne Cancer Institute, Providence Saint John's Health Center, Santa Monica, CA, USA
| | - Antoine Daunay
- Laboratory for Functional Genomics, Fondation Jean Dausset - CEPH, Paris, France
| | - Florence Busato
- Laboratory for Epigenetics and Environment, Centre National de la Recherche en Génomique Humaine, CEA, Evry, France
| | - Arnaud Pillon
- Institut de Recherche Pierre Fabre, CRDPF, Toulouse, France
| | - Jörg Tost
- Laboratory for Epigenetics and Environment, Centre National de la Recherche en Génomique Humaine, CEA, Evry, France
| | - Joëlle Riond
- FRE no. 3600 CNRS, Epigenetic Targeting of Cancer (ETaC), Toulouse, France.,UMR 1037 INSERM/Université Toulouse III, CRCT, Toulouse, France
| | - Gilles Favre
- Cancer Research Center of Toulouse, CRCT, Toulouse, France
| | | | - Paola B Arimondo
- FRE no. 3600 CNRS, Epigenetic Targeting of Cancer (ETaC), Toulouse, France. .,Institut Pasteur CNRS UMR3523, Epigenetic Chemical Biology, Paris, France.
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8
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Conway K, Edmiston SN, Parker JS, Kuan PF, Tsai YH, Groben PA, Zedek DC, Scott GA, Parrish EA, Hao H, Pearlstein MV, Frank JS, Carson CC, Wilkerson MD, Zhao X, Slater NA, Moschos SJ, Ollila DW, Thomas NE. Identification of a Robust Methylation Classifier for Cutaneous Melanoma Diagnosis. J Invest Dermatol 2018; 139:1349-1361. [PMID: 30529013 DOI: 10.1016/j.jid.2018.11.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 12/15/2022]
Abstract
Early diagnosis improves melanoma survival, yet the histopathological diagnosis of cutaneous primary melanoma can be challenging, even for expert dermatopathologists. Analysis of epigenetic alterations, such as DNA methylation, that occur in melanoma can aid in its early diagnosis. Using a genome-wide methylation screening, we assessed CpG methylation in a diverse set of 89 primary invasive melanomas, 73 nevi, and 41 melanocytic proliferations of uncertain malignant potential, classified based on interobserver review by dermatopathologists. Melanomas and nevi were split into training and validation sets. Predictive modeling in the training set using ElasticNet identified a 40-CpG classifier distinguishing 60 melanomas from 48 nevi. High diagnostic accuracy (area under the receiver operator characteristic curve = 0.996, sensitivity = 96.6%, and specificity = 100.0%) was independently confirmed in the validation set (29 melanomas, 25 nevi) and other published sample sets. The 40-CpG melanoma classifier included homeobox transcription factors and genes with roles in stem cell pluripotency or the nervous system. Application of the 40-CpG melanoma classifier to the diagnostically uncertain samples assigned melanoma or nevus status, potentially offering a diagnostic tool to assist dermatopathologists. In summary, the robust, accurate 40-CpG melanoma classifier offers a promising assay for improving primary melanoma diagnosis.
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Affiliation(s)
- Kathleen Conway
- Department of Epidemiology, School of Public Health, University of North Carolina, Chapel Hill, North Carolina, USA; Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
| | - Sharon N Edmiston
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Joel S Parker
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Genetics, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Pei Fen Kuan
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, New York, USA
| | - Yi-Hsuan Tsai
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Pamela A Groben
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA; Department of Pathology and Laboratory Medicine, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Daniel C Zedek
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA; Department of Pathology and Laboratory Medicine, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Glynis A Scott
- Department of Dermatology, University of Rochester School of Medicine, Rochester, New York, USA; Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine, Rochester, New York, USA
| | - Eloise A Parrish
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Honglin Hao
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Michelle V Pearlstein
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Jill S Frank
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Craig C Carson
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Matthew D Wilkerson
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
| | - Xiaobei Zhao
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Nathaniel A Slater
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Stergios J Moschos
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Medicine, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - David W Ollila
- Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Surgery, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Nancy E Thomas
- Department of Dermatology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center (LCCC), University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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9
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de Unamuno Bustos B, Murria Estal R, Pérez Simó G, Simarro Farinos J, Pujol Marco C, Navarro Mira M, Alegre de Miquel V, Ballester Sánchez R, Sabater Marco V, Llavador Ros M, Palanca Suela S, Botella Estrada R. Aberrant DNA methylation is associated with aggressive clinicopathological features and poor survival in cutaneous melanoma. Br J Dermatol 2018; 179:394-404. [PMID: 29278418 DOI: 10.1111/bjd.16254] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Promoter methylation of tumour suppressor genes (TSGs) has recently been implicated in the pathogenesis of several types of cancer. Regarding melanoma, over 100 genes that contribute to its pathogenesis have been identified to be aberrantly hypermethylated. OBJECTIVES This is a retrospective observational study that aims to analyse the prevalence of CpG island methylation in a series of primary melanomas, to identify the associations with the main clinicopathological features, and to explore the prognostic significance of methylation in melanoma survival. MATERIALS AND METHODS DNA methylation was analysed using methylation-specific multiplex ligation-dependent probe amplification in a series of 170 melanoma formalin-fixed paraffin-embedded tumour samples. The relationship between the methylation status, known somatic mutations and clinicopathological features was evaluated. Disease-free survival (DFS) and overall survival (OS) were displayed by the Kaplan-Meier method. RESULTS In the entire cohort, one or more genes were detected to be methylated in 55% of the patients. The most prevalent methylated genes were RARB 31%, PTEN 24%, APC 16%, CDH13 16%, ESR1 14%, CDKN2A 6% and RASSF1 5%. An association between aberrant methylation and aggressive clinicopathological features was observed (older age, increased Breslow thickness, presence of mitosis and ulceration, fast-growing melanomas, advancing stage and TERT mutations). Furthermore, Kaplan-Meier survival analysis showed a correlation of methylation and poorer DFS and OS. CONCLUSIONS Aberrant methylation of TSGs is a frequent event in melanoma. It is associated with aggressive clinicopathological features and poorer survival. Epigenetic alterations may represent a significant prognostic marker with utility in routine practice.
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Affiliation(s)
- B de Unamuno Bustos
- Department of Dermatology, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - R Murria Estal
- Department of Molecular Biology Laboratory, Service of Clinical Analysis, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - G Pérez Simó
- Department of Molecular Biology Laboratory, Service of Clinical Analysis, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - J Simarro Farinos
- Department of Molecular Biology Laboratory, Service of Clinical Analysis, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - C Pujol Marco
- Department of Dermatology, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - M Navarro Mira
- Department of Dermatology, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - V Alegre de Miquel
- Department of Dermatology, Hospital General Universitario de Valencia, Valencia, Spain
| | | | - V Sabater Marco
- Department of Pathology, Hospital General Universitario de Valencia, Valencia, Spain
| | - M Llavador Ros
- Department of Pathology, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - S Palanca Suela
- Department of Molecular Biology Laboratory, Service of Clinical Analysis, Hospital Universitari i Politecnic La Fe, Valencia, Spain
| | - R Botella Estrada
- Department of Dermatology, Hospital Universitari i Politecnic La Fe, Valencia, Spain
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10
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Micevic G, Theodosakis N, Bosenberg M. Aberrant DNA methylation in melanoma: biomarker and therapeutic opportunities. Clin Epigenetics 2017; 9:34. [PMID: 28396701 PMCID: PMC5381063 DOI: 10.1186/s13148-017-0332-8] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/24/2017] [Indexed: 12/18/2022] Open
Abstract
Aberrant DNA methylation is an epigenetic hallmark of melanoma, known to play important roles in melanoma formation and progression. Recent advances in genome-wide methylation methods have provided the means to identify differentially methylated genes, methylation signatures, and potential biomarkers. However, despite considerable effort and advances in cataloging methylation changes in melanoma, many questions remain unanswered. The aim of this review is to summarize recent developments, emerging trends, and important unresolved questions in the field of aberrant DNA methylation in melanoma. In addition to reviewing recent developments, we carefully synthesize the findings in an effort to provide a framework for understanding the current state and direction of the field. To facilitate clarity, we divided the review into DNA methylation changes in melanoma, biomarker opportunities, and therapeutic developments. We hope this review contributes to accelerating the utilization of the diagnostic, prognostic, and therapeutic potential of DNA methylation for the benefit of melanoma patients.
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Affiliation(s)
- Goran Micevic
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520 USA.,Department of Pathology, Yale University School of Medicine, New Haven, CT 06520 USA
| | - Nicholas Theodosakis
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520 USA.,Department of Pathology, Yale University School of Medicine, New Haven, CT 06520 USA
| | - Marcus Bosenberg
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520 USA.,Department of Pathology, Yale University School of Medicine, New Haven, CT 06520 USA
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11
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Abstract
PURPOSE OF REVIEW Over the last years, our understanding in molecular biology of melanoma has grown significantly and many genetic alterations have been identified affecting melanoma pathogenesis. This growing evidence has led to the development of targeted therapies which are showing promising clinical results. In addition to genetic alterations, an increasing number of studies have recently demonstrated the role of epigenetics in melanoma development and progression. Here, we summarize the current data on epigenetic research in melanoma. RECENT FINDINGS MicroRNA (miRNA) expression profiling studies have identified several miRNAs implicated in melanoma cell cycle and proliferation, cell migration and invasion, as well as miRNAs involved in apoptosis and immune response. Abnormal methylation profiling has been associated with melanoma progression and to date aberrant hypermethylation in more than 70 genes has been described. Recent works have highlighted the increasing evidence of the role of histone modification as a central regulatory event in melanoma pathogenesis. SUMMARY Many of these epigenetic biomarkers may have potential diagnostic, prognostic and therapeutic implications. Future approach might be using a combination of genetic and epigenetic biomarkers.
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12
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Pramio DT, Pennacchi PC, Maria-Engler SS, Campos AHJFM, Duprat JP, Carraro DM, Krepischi ACV. LINE-1 hypomethylation and mutational status in cutaneous melanomas. J Investig Med 2016; 64:899-904. [PMID: 26965315 DOI: 10.1136/jim-2016-000066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/19/2016] [Indexed: 11/04/2022]
Abstract
Epigenetic dysregulation is an important emerging hallmark of cutaneous melanoma development. The global loss of DNA methylation in gene-poor regions and transposable DNA elements of cancer cells contributes to increased genomic instability. Long interspersed element-1 (LINE-1) sequences are the most abundant repetitive sequence of the genome and can be evaluated as a surrogate marker of the global level of DNA methylation. In this work, LINE-1 methylation levels were evaluated in cutaneous melanomas and normal melanocyte primary cell cultures to investigate their possible association with both distinct clinicopathological characteristics and tumor mutational profile. A set of driver mutations frequently identified in cutaneous melanoma was assessed by sequencing (actionable mutations in BRAF, NRAS, and KIT genes, and mutations affecting the TER T promoter) or multiplex ligation-dependent probe amplification (MLPA) (CDKN2A deletions). Pyrosequencing was performed to investigate the methylation level of LINE-1 and CDKN2A promoter sequences. The qualitative analysis showed a trend toward an association between LINE-1 hypomethylation and CDKN2A inactivation (p=0.05). In a quantitative approach, primary tumors, mainly the thicker ones (>4 mm), exhibited a trend toward LINE-1 hypomethylation when compared with control melanocytes. To date, this is the first study reporting in cutaneous melanomas a possible link between the dysregulation of LINE-1 methylation and the presence of driver mutations.
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Affiliation(s)
- Dimitrius T Pramio
- International Research Center, AC Camargo Cancer Center, São Paulo, Brazil
| | - Paula C Pennacchi
- Clinical Chemistry and Toxicology Department, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Silvya S Maria-Engler
- Clinical Chemistry and Toxicology Department, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - João P Duprat
- Skin Cancer Department, AC Camargo Cancer Center, São Paulo, Brazil
| | - Dirce M Carraro
- International Research Center, AC Camargo Cancer Center, São Paulo, Brazil
| | - Ana C V Krepischi
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
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13
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Common BRAF(V600E)-directed pathway mediates widespread epigenetic silencing in colorectal cancer and melanoma. Proc Natl Acad Sci U S A 2016; 113:1250-5. [PMID: 26787892 DOI: 10.1073/pnas.1525619113] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
During cancer development, it is well established that many genes, including tumor suppressor genes, are hypermethylated and transcriptionally repressed, a phenomenon referred to as epigenetic silencing. In general, the factors involved in, and the mechanistic basis of, epigenetic silencing during cancer development are not well understood. We have recently described an epigenetic silencing pathway, directed by the oncogenic B-Raf proto-oncogene (BRAF) variant BRAF(V600E), that mediates widespread epigenetic silencing in colorectal cancer (CRC). Notably, the BRAF(V600E) mutation is also present in 50-70% of melanomas. Here, we show that the same pathway we identified in CRC also directs epigenetic silencing of a similar set of genes in BRAF-positive melanoma. In both CRC and melanoma, BRAF(V600E) promotes epigenetic silencing through up-regulation of v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog G (MAFG), a transcriptional repressor with sequence-specific DNA-binding activity. The elevated concentration of MAFG drives DNA binding on the promoter. Promoter-bound MAFG recruits a set of corepressors that includes its heterodimeric partner BTB and CNC homology 1, basic leucine zipper transcription factor 1 (BACH1), the chromatin remodeling factor chromodomain helicase DNA-binding protein 8 (CHD8), and the DNA methyltransferase DNMT3B, resulting in hypermethylation and transcriptional silencing. Our results reveal a common BRAF(V600E)-directed transcriptional regulatory pathway that mediates epigenetic silencing in unrelated solid tumors and provide strong support for an instructive model of oncoprotein-directed epigenetic silencing.
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14
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Abstract
Melanoma, one of the most virulent forms of human malignancy, is the primary cause of mortality from cancers arising from the skin. The prognosis of metastatic melanoma remains dismal despite targeted therapeutic regimens that exploit our growing understanding of cancer immunology and genetic mutations that drive oncogenic cell signaling pathways in cancer. Epigenetic mechanisms, including DNA methylation/demethylation, histone modifications and noncoding RNAs recently have been shown to play critical roles in melanoma pathogenesis. Current evidence indicates that imbalance of DNA methylation and demethylation, dysregulation of histone modification and chromatin remodeling, and altered translational control by noncoding RNAs contribute to melanoma tumorigenesis. Here, we summarize the most recent insights relating to epigenetic markers, focusing on diagnostic potential as well as novel therapeutic approaches for more effective treatment of advanced melanoma.
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Affiliation(s)
- Weimin Guo
- Program in Dermatopathology, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, 221 Longwood Ave. EBRC 401, Boston, MA 02115, USA
| | - Ting Xu
- Program in Dermatopathology, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, 221 Longwood Ave. EBRC 401, Boston, MA 02115, USA
| | - Jonathan J Lee
- Program in Dermatopathology, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, 221 Longwood Ave. EBRC 401, Boston, MA 02115, USA
| | - George F Murphy
- Program in Dermatopathology, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, 221 Longwood Ave. EBRC 401, Boston, MA 02115, USA
| | - Christine G Lian
- Program in Dermatopathology, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, 221 Longwood Ave. EBRC 401, Boston, MA 02115, USA
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15
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Lauss M, Ringnér M, Karlsson A, Harbst K, Busch C, Geisler J, Lønning PE, Staaf J, Jönsson G. DNA methylation subgroups in melanoma are associated with proliferative and immunological processes. BMC Med Genomics 2015; 8:73. [PMID: 26545983 PMCID: PMC4636848 DOI: 10.1186/s12920-015-0147-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 10/28/2015] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND DNA methylation at CpG dinucleotides is modified in tumorigenesis with potential impact on transcriptional activity. METHODS We used the Illumina 450 K platform to evaluate DNA methylation patterns of 50 metastatic melanoma tumors, with matched gene expression data. RESULTS We identified three different methylation groups and validated the groups in independent data from The Cancer Genome Atlas. One group displayed hypermethylation of a developmental promoter set, genome-wide demethylation, increased proliferation and activity of the SWI/SNF complex. A second group had a methylation pattern resembling stromal and leukocyte cells, over-expressed an immune signature and had improved survival rates in metastatic tumors (p < 0.05). A third group had intermediate methylation levels and expressed both proliferative and immune signatures. The methylation groups corresponded to some degree with previously identified gene expression phenotypes. CONCLUSIONS Melanoma consists of divergent methylation groups that are distinguished by promoter methylation, proliferation and content of immunological cells.
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Affiliation(s)
- Martin Lauss
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
| | - Markus Ringnér
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
| | - Anna Karlsson
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
| | - Katja Harbst
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
| | - Christian Busch
- Section of Oncology, Department of Clinical Science, University of Bergen, Bergen, Norway. .,Department of Clinical Oncology, Haukeland University Hospital, Bergen, Norway.
| | - Jürgen Geisler
- Section of Oncology, Department of Clinical Science, University of Bergen, Bergen, Norway. .,Department of Clinical Oncology, Haukeland University Hospital, Bergen, Norway. .,Present Address: Department of Clinical Molecular Biology and Laboratory Sciences, Akershus University Hospital, Lørenskog, Norway.
| | - Per Eystein Lønning
- Section of Oncology, Department of Clinical Science, University of Bergen, Bergen, Norway. .,Department of Clinical Oncology, Haukeland University Hospital, Bergen, Norway. .,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
| | - Johan Staaf
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
| | - Göran Jönsson
- Department of Oncology and Pathology, Clinical Sciences, Lund University Hospital, Lund University, Lund, 221 85, Sweden.
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16
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Conway K, Edmiston SN, Tse CK, Bryant C, Kuan PF, Hair BY, Parrish EA, May R, Swift-Scanlan T. Racial variation in breast tumor promoter methylation in the Carolina Breast Cancer Study. Cancer Epidemiol Biomarkers Prev 2015; 24:921-30. [PMID: 25809865 PMCID: PMC4452445 DOI: 10.1158/1055-9965.epi-14-1228] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 03/03/2015] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND African American (AA) women are diagnosed with more advanced breast cancers and have worse survival than white women, but a comprehensive understanding of the basis for this disparity remains unclear. Analysis of DNA methylation, an epigenetic mechanism that can regulate gene expression, could help to explain racial differences in breast tumor clinical biology and outcomes. METHODS DNA methylation was evaluated at 1,287 CpGs in the promoters of cancer-related genes in 517 breast tumors of AA (n = 216) or non-AA (n = 301) cases in the Carolina Breast Cancer Study (CBCS). RESULTS Multivariable linear regression analysis of all tumors, controlling for age, menopausal status, stage, intrinsic subtype, and multiple comparisons [false discovery rate (FDR)], identified seven CpG probes that showed significant (adjusted P < 0.05) differential methylation between AAs and non-AAs. Stratified analyses detected an additional four CpG probes differing by race within hormone receptor-negative (HR(-)) tumors. Genes differentially methylated by race included DSC2, KCNK4, GSTM1, AXL, DNAJC15, HBII-52, TUSC3, and TES; the methylation state of several of these genes may be associated with worse survival in AAs. TCGA breast tumor data confirmed the differential methylation by race and negative correlations with expression for most of these genes. Several loci also showed racial differences in methylation in peripheral blood leukocytes (PBL) from CBCS cases, indicating that these variations were not necessarily tumor-specific. CONCLUSIONS Racial differences in the methylation of cancer-related genes are detectable in both tumors and PBLs from breast cancer cases. IMPACT Epigenetic variation could contribute to differences in breast tumor development and outcomes between AAs and non-AAs.
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Affiliation(s)
- Kathleen Conway
- Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| | - Sharon N Edmiston
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Chiu-Kit Tse
- Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Christopher Bryant
- Department of Biostatistics, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Pei Fen Kuan
- Department of Applied Mathematics and Statistics, State University of New York, Stony Brook, New York
| | - Brionna Y Hair
- Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Eloise A Parrish
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Ryan May
- The EMMES Corporation, Rockville, Maryland
| | - Theresa Swift-Scanlan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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17
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Genome-Wide DNA Methylation Analysis in Melanoma Reveals the Importance of CpG Methylation in MITF Regulation. J Invest Dermatol 2015; 135:1820-1828. [PMID: 25705847 DOI: 10.1038/jid.2015.61] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 02/09/2015] [Accepted: 02/10/2015] [Indexed: 12/15/2022]
Abstract
The microphthalmia-associated transcription factor (MITF) is a key regulator of melanocyte development and a lineage-specific oncogene in melanoma; a highly lethal cancer known for its unpredictable clinical course. MITF is regulated by multiple intracellular signaling pathways, although the exact mechanisms that determine MITF expression and activity remain incompletely understood. In this study, we obtained genome-wide DNA methylation profiles from 50 stage IV melanomas, normal melanocytes, keratinocytes, and dermal fibroblasts and utilized The Cancer Genome Atlas data for experimental validation. By integrating DNA methylation and gene expression data, we found that hypermethylation of MITF and its co-regulated differentiation pathway genes corresponded to decreased gene expression levels. In cell lines with a hypermethylated MITF-pathway, overexpression of MITF did not alter the expression level or methylation status of the MITF pathway genes. In contrast, however, demethylation treatment of these cell lines induced MITF-pathway activity, confirming that gene regulation was controlled via methylation. The discovery that the activity of the master regulator of pigmentation, MITF, and its downstream targets may be regulated by hypermethylation has significant implications for understanding the development and evolvement of melanoma.
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