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Porkka NK, Olkinuora A, Kuopio T, Ahtiainen M, Eldfors S, Almusa H, Mecklin JP, Peltomäki P. Does breast carcinoma belong to the Lynch syndrome tumor spectrum? - Somatic mutational profiles vs. ovarian and colorectal carcinomas. Oncotarget 2020; 11:1244-1256. [PMID: 32292574 PMCID: PMC7147090 DOI: 10.18632/oncotarget.27538] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/14/2020] [Indexed: 12/30/2022] Open
Abstract
Inherited DNA mismatch repair (MMR) defects cause predisposition to colorectal, endometrial, ovarian, and other cancers occurring in Lynch syndrome (LS). It is unsettled whether breast carcinoma belongs to the LS tumor spectrum. We approached this question through somatic mutational analysis of breast carcinomas from LS families, using established LS-spectrum tumors for comparison. Somatic mutational profiles of 578 cancer-relevant genes were determined for LS-breast cancer (LS-BC, n = 20), non-carrier breast cancer (NC-BC, n = 10), LS-ovarian cancer (LS-OC, n = 16), and LS-colorectal cancer (LS-CRC, n = 18) from the National LS Registry of Finland. Microsatellite and MMR protein analysis stratified LS-BCs into MMR-deficient (dMMR, n = 11) and MMR-proficient (pMMR, n = 9) subgroups. All NC-BCs were pMMR and all LS-OCs and LS-CRCs dMMR. All but one dMMR LS-BCs were hypermutated (> 10 non-synonymous mutations/Mb; average 174/Mb per tumor) and the frequency of MMR-deficiency-associated signatures 6, 20, and 26 was comparable to that in LS-OC and LS-CRC. LS-BCs that were pMMR resembled NC-BCs with respect to somatic mutational loads (4/9, 44%, hypermutated with average mutation count 33/Mb vs. 3/10, 30%, hypermutated with average 88 mutations/Mb), whereas mutational signatures shared features of dMMR LS-BC, LS-OC, and LS-CRC. Epigenetic regulatory genes were significantly enriched as mutational targets in LS-BC, LS-OC, and LS-CRC. Many top mutant genes of our LS-BCs have previously been identified as drivers of unselected breast carcinomas. In conclusion, somatic mutational signatures suggest that conventional MMR status of tumor tissues is likely to underestimate the significance of the predisposing MMR defects as contributors to breast tumorigenesis in LS.
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Affiliation(s)
- Noora K. Porkka
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - Alisa Olkinuora
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - Teijo Kuopio
- Department of Pathology, Jyväskylä Central Hospital, Jyväskylä, Finland
- Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Maarit Ahtiainen
- Department of Education and Research, Jyväskylä Central Hospital and University of Eastern Finland, Jyväskylä, Finland
| | - Samuli Eldfors
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - Henrikki Almusa
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - Jukka-Pekka Mecklin
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
- Department of Surgery, Jyväskylä Central Hospital, Jyväskylä, Finland
- Department of Education & Science, Jyväskylä Central Hospital, Jyväskylä, Finland
| | - Päivi Peltomäki
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
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5
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Nagahashi M, Ling Y, Hayashida T, Kitagawa Y, Futamura M, Yoshida K, Kuwayama T, Nakamura S, Toshikawa C, Yamauchi H, Yamauchi T, Kaneko K, Kanbayashi C, Sato N, Miyoshi Y, Tsuchida J, Nakajima M, Shimada Y, Ichikawa H, Lyle S, Takabe K, Okuda S, Wakai T. Actionable gene alterations in an Asian population with triple-negative breast cancer. JCO Precis Oncol 2018; 2. [PMID: 32529167 DOI: 10.1200/po.17.00211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose It has been suggested that the biological characteristics of breast cancer may differ among different geographic or ethnic populations. Indeed, triple-negative breast cancer (TNBC), the most lethal breast cancer subgroup, has been reported to show a higher incidence in Japan than in the US. However, most genomic studies of these tumors are from Western countries and the genomic landscape of TNBC in an Asian population has not been thoroughly investigated. Here, we sought to elucidate the geographic and ethnic diversity of breast cancer by examining actionable driver alterations in TNBC tumors from Japanese patients and comparing them with The Cancer Genome Atlas (TCGA) database, which gather data primarily from non-Asian patients. Materials and Methods We performed comprehensive genomic profiling, including an analysis of 435 known cancer genes on Japanese TNBC patients (N=53) and compared the results to independent data obtained from TCGA (N=123). Results Driver alterations were identified in 51 out of 53 Japanese patients (96%). Although the overall alteration spectrum of Japanese patients was similar to that of the TCGA, we found significant differences in the frequencies of alterations in MYC and PTK2. We identified three patients (5.7%) with a high tumor mutation burden, although no microsatellite instability was observed in any of the Japanese patients. Importantly, pathway analysis revealed that 66.0% (35/53) of Japanese patients, as well as 66.7% (82/123) of the TCGA cohort, had alterations in at least one actionable gene targetable by an FDA-approved drug. Conclusion Our study identified actionable driver alterations in Japanese patients with TNBC, revealing new opportunities for targeted therapies in Asian patients.
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Affiliation(s)
- Masayuki Nagahashi
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - YiWei Ling
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Tetsu Hayashida
- Department of Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, 35 Shinano-machi, Shinjyuku-ku, Tokyo, 160-8582, Japan
| | - Manabu Futamura
- Department of Surgical Oncology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
| | - Kazuhiro Yoshida
- Department of Surgical Oncology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
| | - Takashi Kuwayama
- Division of Breast Surgical Oncology, Department of Surgery, Showa University School of Medicine, 1-5-8, Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan
| | - Seigo Nakamura
- Division of Breast Surgical Oncology, Department of Surgery, Showa University School of Medicine, 1-5-8, Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan
| | - Chie Toshikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan.,Department of Breast Surgical Oncology, Department of Internal Medicine, St. Luke's International Hospital, 9-1 Akashicho, Chuo, Tokyo 104-8560, Japan
| | - Hideko Yamauchi
- Department of Breast Surgical Oncology, Department of Internal Medicine, St. Luke's International Hospital, 9-1 Akashicho, Chuo, Tokyo 104-8560, Japan
| | - Teruo Yamauchi
- Division of Medical Oncology, Department of Internal Medicine, St. Luke's International Hospital, 9-1 Akashicho, Chuo, Tokyo 104-8560, Japan
| | - Koji Kaneko
- Department of Breast Oncology, Niigata Cancer Center Hospital, 15-3 Kawagishi-cho 2-Chome, Chuo-ku, Niigata City, Niigata 951-8566, Japan
| | - Chizuko Kanbayashi
- Department of Breast Oncology, Niigata Cancer Center Hospital, 15-3 Kawagishi-cho 2-Chome, Chuo-ku, Niigata City, Niigata 951-8566, Japan
| | - Nobuaki Sato
- Department of Breast Oncology, Niigata Cancer Center Hospital, 15-3 Kawagishi-cho 2-Chome, Chuo-ku, Niigata City, Niigata 951-8566, Japan
| | - Yasuo Miyoshi
- Department of Surgery, Division of Breast and Endocrine, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan
| | - Junko Tsuchida
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Masato Nakajima
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Yoshifumi Shimada
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Hiroshi Ichikawa
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Stephen Lyle
- University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, Massachusetts 01655, USA
| | - Kazuaki Takabe
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan.,Breast Surgery, Roswell Park Comprehensive Cancer Center, Elm & Carlton Streets, Buffalo, New York 14263, USA.,Department of Surgery, University at Buffalo Jacobs School of Medicine and Biosciences, the State University of New York, USA.,Department of Breast Surgery and Oncology, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan.,Department of Surgery, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
| | - Toshifumi Wakai
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata City, Niigata 951-8510, Japan
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7
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Riggio M, Perrone MC, Polo ML, Rodriguez MJ, May M, Abba M, Lanari C, Novaro V. AKT1 and AKT2 isoforms play distinct roles during breast cancer progression through the regulation of specific downstream proteins. Sci Rep 2017; 7:44244. [PMID: 28287129 PMCID: PMC5347151 DOI: 10.1038/srep44244] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/06/2017] [Indexed: 12/14/2022] Open
Abstract
The purpose of this study was to elucidate the mechanisms associated with the specific effects of AKT1 and AKT2 isoforms in breast cancer progression. We modulated the abundance of specific AKT isoforms in IBH-6 and T47D human breast cancer cell lines and showed that AKT1 promoted cell proliferation, through S6 and cyclin D1 upregulation, but it inhibited cell migration and invasion through β1-integrin and focal adhesion kinase (FAK) downregulation. In contrast, AKT2 promoted cell migration and invasion through F-actin and vimentin induction. Thus, while overexpression of AKT1 promoted local tumor growth, downregulation of AKT1 or overexpression of AKT2 promoted peritumoral invasion and lung metastasis. Furthermore, we evaluated The Cancer Genome Atlas (TCGA) dataset for invasive breast carcinomas and found that increased AKT2 but not AKT1 mRNA levels correlated with a worse clinical outcome. We conclude that AKT isoforms play specific roles in different steps of breast cancer progression, with AKT1 involved in the local tumor growth and AKT2 involved in the distant tumor dissemination, having AKT2 a poorer prognostic value and consequently being a worthwhile target for therapy.
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Affiliation(s)
- Marina Riggio
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - María C Perrone
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - María L Polo
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - María J Rodriguez
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - María May
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - Martín Abba
- Centro de Investigaciones Inmunológicas Básicas y Aplicadas. Fac. Ciencias Médicas - Universidad Nacional La Plata (1900), Argentina
| | - Claudia Lanari
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
| | - Virginia Novaro
- Instituto de Biología y Medicina Experimental (IBYME), Vuelta de Obligado 2490 Buenos Aires (1428), Argentina
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