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Nagao Y, Yokoi A, Yoshida K, Kitagawa M, Asano-Inami E, Kato T, Ishikawa M, Yamamoto Y, Kajiyama H. Uterine leiomyosarcoma cell-derived extracellular vesicles induce the formation of cancer-associated fibroblasts. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167103. [PMID: 38417460 DOI: 10.1016/j.bbadis.2024.167103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/09/2024] [Accepted: 02/22/2024] [Indexed: 03/01/2024]
Abstract
OBJECTIVE Uterine leiomyosarcoma (ULMS) is a rare malignant tumor, which is aggressive, and has a poor prognosis even during its early stages. Extracellular vesicles (EVs) carry cargo, such as microRNAs (miRNAs), which are involved in intercellular communication in the tumor microenvironment and other processes. Because there are no studies on EV-related miRNAs in ULMS, we identified EV-related miRNAs in ULMS and examined their function. METHODS Small EVs (sEVs) and medium/large EVs (m/lEVs) were extracted from ULMS cells by ultracentrifugation and their basic characteristics were evaluated. Then, small RNA sequencing was done to obtain EV-related miRNA profiles. Next, miRNA expression levels in sera and tissues of ULMS patients were compared with those of myoma patients. RESULTS miR-654-3p and miR-369-3p were indicated to be highly expressed in both sera and tissues of ULMS patients. These two miRNAs are also highly expressed in ULMS cell lines and ULMS-derived EVs. Some cancer-associated fibroblast (CAF) markers were increased when fibroblasts were treated with ULMS-derived EVs. Furthermore, fibroblasts took up EVs derived from ULMS as determined by confocal laser microscopy. In addition, the transfection of the two candidate miRNAs into fibroblasts significantly increased some CAF markers, particularly ACTA2. CONCLUSION miR-654-3p and miR-369-3p are highly expressed in ULMS-derived EVs, indicating that these EV-related miRNAs induce the formation of cancer-associated fibroblasts.
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Affiliation(s)
- Yukari Nagao
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan; Japan Science and Technology Agency (JST), FOREST, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan.
| | - Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
| | - Masami Kitagawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Eri Asano-Inami
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Tomoyasu Kato
- Department of Gynecology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Mitsuya Ishikawa
- Department of Gynecology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Yusuke Yamamoto
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
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Yokoi A, Ukai M, Yasui T, Inokuma Y, Hyeon-Deuk K, Matsuzaki J, Yoshida K, Kitagawa M, Chattrairat K, Iida M, Shimada T, Manabe Y, Chang IY, Asano-Inami E, Koya Y, Nawa A, Nakamura K, Kiyono T, Kato T, Hirakawa A, Yoshioka Y, Ochiya T, Hasegawa T, Baba Y, Yamamoto Y, Kajiyama H. Identifying high-grade serous ovarian carcinoma-specific extracellular vesicles by polyketone-coated nanowires. SCIENCE ADVANCES 2023; 9:eade6958. [PMID: 37418532 PMCID: PMC10328412 DOI: 10.1126/sciadv.ade6958] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 06/02/2023] [Indexed: 07/09/2023]
Abstract
Cancer cell-derived extracellular vesicles (EVs) have unique protein profiles, making them promising targets as disease biomarkers. High-grade serous ovarian carcinoma (HGSOC) is the deadly subtype of epithelial ovarian cancer, and we aimed to identify HGSOC-specific membrane proteins. Small EVs (sEVs) and medium/large EVs (m/lEVs) from cell lines or patient serum and ascites were analyzed by LC-MS/MS, revealing that both EV subtypes had unique proteomic characteristics. Multivalidation steps identified FRα, Claudin-3, and TACSTD2 as HGSOC-specific sEV proteins, but m/lEV-associated candidates were not identified. In addition, for using a simple-to-use microfluidic device for EV isolation, polyketone-coated nanowires (pNWs) were developed, which efficiently purify sEVs from biofluids. Multiplexed array assays of sEVs isolated by pNW showed specific detectability in cancer patients and predicted clinical status. In summary, the HGSOC-specific marker detection by pNW are a promising platform as clinical biomarkers, and these insights provide detailed proteomic aspects of diverse EVs in HGSOC patients.
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Affiliation(s)
- Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Nagoya University Institute for Advanced Research, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Japan Science and Technology Agency (JST), FOREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Mayu Ukai
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Takao Yasui
- Department of Life Science and Technology, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8501, Japan
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yasuhide Inokuma
- Japan Science and Technology Agency (JST), FOREST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido 060-8628, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
| | - Kim Hyeon-Deuk
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Department of Chemistry, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8502, Japan
| | - Juntaro Matsuzaki
- Division of Pharmacotherapeutics, Keio University Faculty of Pharmacy, 2-15-45 Mita, Minato-ku, Tokyo 108-8345, Japan
| | - Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Nagoya University Institute for Advanced Research, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Masami Kitagawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Kunanon Chattrairat
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Mikiko Iida
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Taisuke Shimada
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Yumehiro Manabe
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - I-Ya Chang
- Department of Chemistry, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8502, Japan
| | - Eri Asano-Inami
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Yoshihiro Koya
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Akihiro Nawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Kae Nakamura
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
- Center for Low-Temperature Plasma Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Tohru Kiyono
- Project for Prevention of HPV-related Cancer, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, 6-5-1 Kashiwanoha, Kashiwa, Chiba 277-8577, Japan
| | - Tomoyasu Kato
- Department of Gynecologic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Akihiko Hirakawa
- Department of Clinical Biostatistics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8519, Japan
| | - Yusuke Yoshioka
- Department of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Takahiro Ochiya
- Department of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Takeshi Hasegawa
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Yoshinobu Baba
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Institute of Nano-Life-Systems, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Institute of Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Kanagawa, Inage-ku, Chiba, Chiba 263-8555, Japan
| | - Yusuke Yamamoto
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroaki Kajiyama
- Division of Pharmacotherapeutics, Keio University Faculty of Pharmacy, 2-15-45 Mita, Minato-ku, Tokyo 108-8345, Japan
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Hu H, Zhao K, Fang D, Wang Z, Yu N, Yao B, Liu K, Wang F, Mei Y. The RNA binding protein RALY suppresses p53 activity and promotes lung tumorigenesis. Cell Rep 2023; 42:112288. [PMID: 36952348 DOI: 10.1016/j.celrep.2023.112288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 02/10/2023] [Accepted: 03/03/2023] [Indexed: 03/24/2023] Open
Abstract
The tumor suppressor p53 plays a pivotal role in tumor prevention. The activity of p53 is mainly restrained by the ubiquitin E3 ligase Mdm2. However, it is not well understood how the Mdm2-p53 pathway is intricately regulated. Here we report that the RNA binding protein RALY functions as an oncogenic factor in lung cancer. RALY simultaneously binds to Mdm2 and the deubiquitinating enzyme USP7. Via these interactions, RALY not only stabilizes Mdm2 by stimulating the deubiquitinating activity of USP7 toward Mdm2 but also increases the trans-E3 ligase activity of Mdm2 toward p53. Consequently, RALY enhances Mdm2-mediated ubiquitination and degradation of p53. Functionally, RALY promotes lung tumorigenesis, at least partially, via negative regulation of p53. These findings suggest that RALY destabilizes p53 by modulating the function of Mdm2 at multiple levels. Our study also indicates a critical role for RALY in promoting lung tumorigenesis via p53 inhibition.
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Affiliation(s)
- Hao Hu
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Kailiang Zhao
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Debao Fang
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Zhongyu Wang
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Ning Yu
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Bo Yao
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Kaiyue Liu
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Fang Wang
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China
| | - Yide Mei
- Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China; The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China; Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, Anhui, China.
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4
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Nagao Y, Yokoi A, Yoshida K, Sugiyama M, Watanabe E, Nakamura K, Kitagawa M, Asano-Inami E, Koya Y, Yoshihara M, Tamauchi S, Shimizu Y, Ikeda Y, Yoshikawa N, Kato T, Yamamoto Y, Kajiyama H. Novel therapeutic strategies targeting UCP2 in uterine leiomyosarcoma. Pharmacol Res 2023; 189:106693. [PMID: 36773710 DOI: 10.1016/j.phrs.2023.106693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Uterine leiomyosarcoma (ULMS) is a malignant stromal tumor arising from the myometrium with a poor prognosis and very limited response to current chemotherapy. This study aimed to identify novel targets for ULMS through a three-step screening process using a chemical library consisting of 1271 Food and Drug Administration-approved drugs. First, we evaluated their inhibitory effects on ULMS cells and identified four candidates: proscillaridin A, lanatoside C, floxuridine, and digoxin. Then, we subcutaneously or orthotopically transplanted SK-UT-1 cells into mice to establish mouse models. In vivo analyses showed that proscillaridin A and lanatoside C exerted a superior antitumor effect. The results of mRNA sequencing showed that uncoupling protein 2 (UCP2) was suppressed in the sirtuin signaling pathway, increasing reactive oxygen species (ROS) and inducing cell death. Moreover, the downregulation of UCP2 induced ROS and suppressed ULMS cell growth. Furthermore, analyses using clinical samples showed that UCP2 expression was significantly upregulated in ULMS tissues than in myoma tissues both at the RNA and protein levels. These findings suggested that UCP2 is a potential therapeutic target and can contribute to the development of novel therapeutic strategies in patients with ULMS.
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Affiliation(s)
- Yukari Nagao
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan; Japan Science and Technology Agency (JST), FOREST, 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan.
| | - Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi 464-8603, Japan
| | - Mai Sugiyama
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Eri Watanabe
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Kae Nakamura
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan; Center for Low-Temperature Plasma Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aichi, 464-8603, Japan
| | - Masami Kitagawa
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Eri Asano-Inami
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yoshihiro Koya
- Bell Research Center, Department of Obstetrics and Gynecology Collaborative Research, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Masato Yoshihara
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Satoshi Tamauchi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yusuke Shimizu
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Yoshiki Ikeda
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Nobuhisa Yoshikawa
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
| | - Tomoyasu Kato
- Department of Gynecologic Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Yusuke Yamamoto
- Laboratory of Integrative Oncology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya-shi, Aichi 466-8550, Japan
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An in vitro carcinogenesis model for cervical cancer harboring episomal form of HPV16. PLoS One 2023; 18:e0281069. [PMID: 36763589 PMCID: PMC9916646 DOI: 10.1371/journal.pone.0281069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/14/2023] [Indexed: 02/11/2023] Open
Abstract
Deregulated expression of viral E6 and E7 genes often caused by viral genome integration of high-risk human papillomaviruses (HR-HPVs) into host DNA and additional host genetic alterations are thought to be required for the development of cervical cancer. However, approximately 15% of invasive cervical cancer specimens contain only episomal HPV genomes. In this study, we investigated the tumorigenic potential of human cervical keratinocytes harboring only the episomal form of HPV16 (HCK1T/16epi). We found that the HPV16 episomal form is sufficient for promoting cell proliferation and colony formation of parental HCK1T cells. Ectopic expression of host oncogenes, MYC and PIK3CAE545K, enhanced clonogenic growth of both early- and late-passage HCK1T/16epi cells, but conferred tumor-initiating ability only to late-passage HCK1T/16epi cells. Interestingly, the expression levels of E6 and E7 were rather lower in late-passage than in early-passage cells. Moreover, additional introduction of a constitutively active MEK1 (MEK1DD) and/or KRASG12V into HCK1T/16epi cells resulted in generation of highly potent tumor-initiating cells. Thus an in vitro model for progression of cervical neoplasia with episomal HPV16 was established. In the model, constitutively active mutation of PIK3CA, PIK3CAE545K, and overexpression of MYC, in the cells with episomal HPV16 genome were not sufficient, but an additional event such as activation of the RAS-MEK pathway was required for progression to tumorigenicity.
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6
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Wang C, Yang Y, Wu X, Li J, Liu K, Fang D, Li B, Shan G, Mei X, Wang F, Mei Y. Reciprocal modulation of long noncoding RNA EMS and p53 regulates tumorigenesis. Proc Natl Acad Sci U S A 2022; 119:e2111409119. [PMID: 35022235 PMCID: PMC8784137 DOI: 10.1073/pnas.2111409119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
p53 plays a central role in tumor suppression. Emerging evidence suggests long noncoding RNA (lncRNA) as an important class of regulatory molecules that control the p53 signaling. Here, we report that the oncogenic lncRNA E2F1 messenger RNA (mRNA) stabilizing factor (EMS) and p53 mutually repress each other's expression. EMS is negatively regulated by p53. As a direct transcriptional repression target of p53, EMS is surprisingly shown to inhibit p53 expression. EMS associates with cytoplasmic polyadenylation element-binding protein 2 (CPEB2) and thus, disrupts the CPEB2-p53 mRNA interaction. This disassociation attenuates CPEB2-mediated p53 mRNA polyadenylation and suppresses p53 translation. Functionally, EMS is able to exert its oncogenic activities, at least partially, via the CPEB2-p53 axis. Together, these findings reveal a double-negative feedback loop between p53 and EMS, through which p53 is finely controlled. Our study also demonstrates a critical role for EMS in promoting tumorigenesis via the negative regulation of p53.
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Affiliation(s)
- Chenfeng Wang
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yang Yang
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Xianning Wu
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Jingxin Li
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Kaiyue Liu
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Debao Fang
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Bingyan Li
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Ge Shan
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Xinyu Mei
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China;
| | - Fang Wang
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China;
| | - Yide Mei
- The First Affiliated Hospital of University of Science and Technology of China (USTC), Hefei National Laboratory for Physical Sciences at Microscale, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China;
- The Chinese Academy of Sciences (CAS) Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
- Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei 230027, China
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7
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Zhang M, Kiyono T, Aoki K, Goshima N, Kobayashi S, Hiranuma K, Shiraishi K, Saya H, Nakahara T. Development of an in vitro carcinogenesis model of human papillomavirus-induced cervical adenocarcinoma. Cancer Sci 2021; 113:904-915. [PMID: 34932848 PMCID: PMC8898731 DOI: 10.1111/cas.15246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 11/30/2022] Open
Abstract
Cervical adenocarcinoma (ADC) is the second most common pathological subtype of cervical cancer after squamous cell carcinoma. It accounts for approximately 20% of cervical cancers, and the incidence has increased in the past few decades, particularly among young patients. The persistent infection of high‐risk human papillomavirus (HPV) is responsible for most cervical ADC. However, almost all available in vitro models are designed to study the carcinogenesis of cervical squamous cell carcinoma. To gain better insights into molecular background of ADC, we aimed to establish an in vitro carcinogenesis model of ADC. We previously reported the establishment of an in vitro model for cervical squamous cell carcinoma by introducing defined viral and cellular oncogenes, HPV16 E6 and E7, c‐MYC, and activated RAS to human cervical keratinocytes. In this study, the expression of potential lineage‐specifying factors and/or SMAD4 reduction was introduced in addition to the defined four oncogenes to direct carcinogenesis toward ADC. The cell properties associated with the cell lineage were analyzed in monolayer and organoid cultures and the tumors in mouse xenografts. In the cells expressing Forkhead box A2 (FOXA2), apparent changes in cell properties were observed, such as elevated expression of columnar cell markers and decreased expression of squamous cell markers. Strikingly, the histopathology of tumors expressing FOXA2 resembled cervical ADC, proposing that FOXA2 plays a vital role in dictating the histopathology of cervical cancers.
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Affiliation(s)
- Mengzhu Zhang
- Department of Immune Medicine, National Cancer Center Research Institute, Tokyo, Japan.,Division of Gene Regulation, Institute for Advanced Medical Research, Graduate School of Medicine, Keio University, Tokyo, Japan
| | - Tohru Kiyono
- Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Kazunori Aoki
- Department of Immune Medicine, National Cancer Center Research Institute, Tokyo, Japan
| | - Naoki Goshima
- Department of Human Sciences, Faculty of Human Sciences, Musashino University, Tokyo, Japan
| | - Shin Kobayashi
- Dynamic Pharmaco-Modality Research Group, Cellular and Molecular Biotechnology and Research Institute, National Institute of Advanced Industrial Science and Technology, Tokyo, Japan
| | - Kengo Hiranuma
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kouya Shiraishi
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research, Graduate School of Medicine, Keio University, Tokyo, Japan
| | - Tomomi Nakahara
- Department of Immune Medicine, National Cancer Center Research Institute, Tokyo, Japan
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8
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Cararo-Lopes E, Dias MH, da Silva MS, Zeidler JD, Vessoni AT, Reis MS, Boccardo E, Armelin HA. Autophagy buffers Ras-induced genotoxic stress enabling malignant transformation in keratinocytes primed by human papillomavirus. Cell Death Dis 2021; 12:194. [PMID: 33602932 PMCID: PMC7892846 DOI: 10.1038/s41419-021-03476-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 01/31/2023]
Abstract
Malignant transformation involves an orchestrated rearrangement of cell cycle regulation mechanisms that must balance autonomic mitogenic impulses and deleterious oncogenic stress. Human papillomavirus (HPV) infection is highly prevalent in populations around the globe, whereas the incidence of cervical cancer is 0.15%. Since HPV infection primes cervical keratinocytes to undergo malignant transformation, we can assume that the balance between transforming mitogenic signals and oncogenic stress is rarely attained. We showed that highly transforming mitogenic signals triggered by HRasG12V activity in E6E7-HPV-keratinocytes generate strong replication and oxidative stresses. These stresses are counteracted by autophagy induction that buffers the rapid increase of ROS that is the main cause of genotoxic stress promoted by the oncoprotein. As a result, autophagy creates a narrow window of opportunity for malignant keratinocytes to emerge. This work shows that autophagy is crucial to allow the transition of E6E7 keratinocytes from an immortalized to a malignant state caused by HRasG12V.
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Affiliation(s)
- Eduardo Cararo-Lopes
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil.
- Department of Biochemistry, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08901, USA.
| | - Matheus H Dias
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil
| | - Marcelo S da Silva
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil
- Department of Chemical and Biological Sciences, Instituto de Biociência, Universidade do Estado de São Paulo, Botucatu, SP, 18618-689, Brazil
| | - Julianna D Zeidler
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil
- Kogod Aging Center, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine, Rochester, MN, 55905, USA
| | - Alexandre T Vessoni
- Department of Medicine, Washington University in St. Louis, St. Louis, MO, 63110, USA
| | - Marcelo S Reis
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil
| | - Enrique Boccardo
- Department of Microbiology, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, 05508-900, Brazil
| | - Hugo A Armelin
- Center of Toxins, Immune-response and Cell Signaling, Instituto Butantan, São Paulo, SP, 05503-900, Brazil.
- Department of Biochemistry, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
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9
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A Driver Never Works Alone-Interplay Networks of Mutant p53, MYC, RAS, and Other Universal Oncogenic Drivers in Human Cancer. Cancers (Basel) 2020; 12:cancers12061532. [PMID: 32545208 PMCID: PMC7353041 DOI: 10.3390/cancers12061532] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 12/12/2022] Open
Abstract
The knowledge accumulating on the occurrence and mechanisms of the activation of oncogenes in human neoplasia necessitates an increasingly detailed understanding of their systemic interactions. None of the known oncogenic drivers work in isolation from the other oncogenic pathways. The cooperation between these pathways is an indispensable element of a multistep carcinogenesis, which apart from inactivation of tumor suppressors, always includes the activation of two or more proto-oncogenes. In this review we focus on representative examples of the interaction of major oncogenic drivers with one another. The drivers are selected according to the following criteria: (1) the highest frequency of known activation in human neoplasia (by mutations or otherwise), (2) activation in a wide range of neoplasia types (universality) and (3) as a part of a distinguishable pathway, (4) being a known cause of phenotypic addiction of neoplastic cells and thus a promising therapeutic target. Each of these universal oncogenic factors—mutant p53, KRAS and CMYC proteins, telomerase ribonucleoprotein, proteasome machinery, HSP molecular chaperones, NF-κB and WNT pathways, AP-1 and YAP/TAZ transcription factors and non-coding RNAs—has a vast network of molecular interrelations and common partners. Understanding this network allows for the hunt for novel therapeutic targets and protocols to counteract drug resistance in a clinical neoplasia treatment.
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10
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Kumazaki M, Shimomura I, Kiyono T, Ochiya T, Yamamoto Y. Cell-type specific tumorigenesis with Ras oncogenes in human lung epithelial cells. Biochem Biophys Res Commun 2020; 525:483-490. [DOI: 10.1016/j.bbrc.2020.02.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/11/2020] [Accepted: 02/18/2020] [Indexed: 02/06/2023]
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11
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Dundar B, Markwell SM, Sharma NV, Olson CL, Mukherjee S, Brat DJ. Methods for in vitro modeling of glioma invasion: Choosing tools to meet the need. Glia 2020; 68:2173-2191. [PMID: 32134155 DOI: 10.1002/glia.23813] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/24/2020] [Accepted: 02/18/2020] [Indexed: 12/11/2022]
Abstract
Widespread tumor cell invasion is a fundamental property of diffuse gliomas and is ultimately responsible for their poor prognosis. A greater understanding of basic mechanisms underlying glioma invasion is needed to provide insights into therapies that could potentially counteract them. While none of the currently available in vitro models can fully recapitulate the complex interactions of glioma cells within the brain tumor microenvironment, if chosen and developed appropriately, these models can provide controlled experimental settings to study molecular and cellular phenomena that are challenging or impossible to model in vivo. Therefore, selecting the most appropriate in vitro model, together with its inherent advantages and limitations, for specific hypotheses and experimental questions achieves primary significance. In this review, we describe and discuss commonly used methods for modeling and studying glioma invasion in vitro, including platforms, matrices, cell culture, and visualization techniques, so that choices for experimental approach are informed and optimal.
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Affiliation(s)
- Bilge Dundar
- Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
| | - Steven M Markwell
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Nitya V Sharma
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Cheryl L Olson
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Subhas Mukherjee
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Daniel J Brat
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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12
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Dendo K, Yugawa T, Nakahara T, Ohno SI, Goshima N, Arakawa H, Kiyono T. Induction of non-apoptotic programmed cell death by oncogenic RAS in human epithelial cells and its suppression by MYC overexpression. Carcinogenesis 2018; 39:202-213. [PMID: 29106503 PMCID: PMC5862353 DOI: 10.1093/carcin/bgx124] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 10/27/2017] [Indexed: 12/17/2022] Open
Abstract
Oncogenic mutations of RAS genes, found in about 30% of human cancers, are considered to play important roles in cancer development. However, oncogenic RAS can also induce senescence in mouse and human normal fibroblasts. In some cell lines, oncogenic RAS has been reported to induce non-apoptotic programed cell death (PCD). Here, we investigated effects of oncogenic RAS expression in several types of normal human epithelial cells. Oncogenic RAS but not wild-type RAS stimulated macropinocytosis with accumulation of large-phase lucent vacuoles in the cytoplasm, subsequently leading to cell death which was indistinguishable from a recently proposed new type of PCD, methuosis. A RAC1 inhibitor suppressed accumulation of macropinosomes and overexpression of MYC attenuated oncogenic RAS-induced such accumulation, cell cycle arrest and cell death. MYC suppression or rapamycin treatment in some cancer cell lines harbouring oncogenic mutations in RAS genes induced cell death with accumulation of macropinosomes. These results suggest that this type of non-apoptotic PCD is a tumour-suppressing mechanism acting against oncogenic RAS mutations in normal human epithelial cells, which can be overcome by MYC overexpression, raising the possibility that its induction might be a novel approach to treatment of RAS-mutated human cancers.
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Affiliation(s)
- Kasumi Dendo
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan.,Department of NCC Cancer Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima, Bunkyou-ku, Tokyo, Japan
| | - Takashi Yugawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan
| | - Tomomi Nakahara
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan
| | - Shin-Ichi Ohno
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan
| | - Naoki Goshima
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Aomi, Koto-ku, Tokyo, Japan
| | - Hirofumi Arakawa
- Department of NCC Cancer Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Yushima, Bunkyou-ku, Tokyo, Japan.,Division of Cancer Biology, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tsukiji, Chuo-ku, Tokyo, Japan
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13
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Tamarozzi ER, Giuliatti S. Understanding the Role of Intrinsic Disorder of Viral Proteins in the Oncogenicity of Different Types of HPV. Int J Mol Sci 2018; 19:ijms19010198. [PMID: 29315236 PMCID: PMC5796147 DOI: 10.3390/ijms19010198] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 01/06/2018] [Accepted: 01/07/2018] [Indexed: 12/21/2022] Open
Abstract
Intrinsic disorder is very important in the biological function of several proteins, and is directly linked to their foldability during interaction with their targets. There is a close relationship between the intrinsically disordered proteins and the process of carcinogenesis involving viral pathogens. Among these pathogens, we have highlighted the human papillomavirus (HPV) in this study. HPV is currently among the most common sexually transmitted infections, besides being the cause of several types of cancer. HPVs are divided into two groups, called high- and low-risk, based on their oncogenic potential. The high-risk HPV E6 protein has been the target of much research, in seeking treatments against HPV, due to its direct involvement in the process of cell cycle control. To understand the role of intrinsic disorder of the viral proteins in the oncogenic potential of different HPV types, the structural characteristics of intrinsically disordered regions of high and low-risk HPV E6 proteins were analyzed. In silico analyses of primary sequences, prediction of tertiary structures, and analyses of molecular dynamics allowed the observation of the behavior of such disordered regions in these proteins, thereby proving a direct relationship of structural variation with the degree of oncogenicity of HPVs. The results obtained may contribute to the development of new therapies, targeting the E6 oncoprotein, for the treatment of HPV-associated diseases.
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Affiliation(s)
- Elvira Regina Tamarozzi
- Department of Genetics, School of Medicine of Ribeirão Preto, University of São Paulo, Sao Paulo 14049-900, Brazil.
| | - Silvana Giuliatti
- Department of Genetics, School of Medicine of Ribeirão Preto, University of São Paulo, Sao Paulo 14049-900, Brazil.
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14
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Nakamura K, Nakayama K, Ishikawa N, Ishikawa M, Sultana R, Kiyono T, Kyo S. Reconstitution of high-grade serous ovarian carcinoma from primary fallopian tube secretory epithelial cells. Oncotarget 2017; 9:12609-12619. [PMID: 29560094 PMCID: PMC5849158 DOI: 10.18632/oncotarget.23035] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 11/15/2017] [Indexed: 11/25/2022] Open
Abstract
Fallopian tube secretory epithelial cells (FTSECs) have been suggested to be the source of high-grade serous ovarian carcinoma (HGSOC). Although several genetic alterations are known to be involved in HGSOC development, the minimal requirements remain unclear. We aimed to identify oncogenic mutations indispensable for HGSOC development in a stepwise model, using immortalized FTSECs. FTSECs were isolated from clinical samples and immortalized by overexpression of cyclin D1, CDK4R24C, and hTERT. Oncogenic mutations in the p53, c-Myc, and RAS/PI3K pathways were mimicked by lentiviral transduction. We found two distinct patterns of gene alteration essential for HGSOC development: p53/KRAS/AKT and p53/KRAS/c-Myc. Dominant-negative p53, alone or combined with oncogenic KRAS (KRASV12), constitutively active AKT (CA-AKT), and c-Myc, did not induce tumorigenesis in immortalized cells; however, overexpression of CA-AKT or c-Myc, along with dominant-negative p53 and KRASV12, conferred tumorigenic potential. Transformed FTSECs formed tumors in nude mice that were grossly, histologically, and immunohistochemically similar to human HGSOCs. Interestingly, mice harboring tumors with c-Myc amplifications displayed extensive metastases, consistent with the increased dissemination in their human counterparts. Thus, aberrant p53/KRASV12/c-Myc or p53/KRASV12/PI3K-AKT signaling was the minimum requirement for FTSEC carcinogenesis. The model based on this evidence could shed light on the early stages of HGSOC development.
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Affiliation(s)
- Kohei Nakamura
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, 6938501, Izumo, Japan
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, 6938501, Izumo, Japan
| | - Noriyoshi Ishikawa
- Department of Organ Pathology, Shimane University School of Medicine, 6938501, Izumo, Japan
| | - Masako Ishikawa
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, 6938501, Izumo, Japan
| | - Razia Sultana
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, 6938501, Izumo, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 1040045, Tsukiji, Chuo-ku, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, 6938501, Izumo, Japan
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15
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Yoshimatsu Y, Nakahara T, Tanaka K, Inagawa Y, Narisawa-Saito M, Yugawa T, Ohno SI, Fujita M, Nakagama H, Kiyono T. Roles of the PDZ-binding motif of HPV 16 E6 protein in oncogenic transformation of human cervical keratinocytes. Cancer Sci 2017; 108:1303-1309. [PMID: 28440909 PMCID: PMC5497797 DOI: 10.1111/cas.13264] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/17/2017] [Accepted: 04/19/2017] [Indexed: 01/08/2023] Open
Abstract
The high-risk human papillomavirus E6 proteins have been shown to interact with and lead to degradation of PDZ-domain-containing proteins through its carboxy-terminal motif. This PDZ-binding motif plays important roles in transformation of cultured cells and carcinogenesis of E6-transgenic mice. However, its biological effects on the natural host cells have not been elucidated. We have examined its roles in an in vitro carcinogenesis model for cervical cancer, in which E6 and E7 together with activated HRAS (HRASG12V ) can induce tumorigenic transformation of normal human cervical keratinocytes. In this model, E6Δ151 mutant, which is defective in binding to PDZ domains, almost lost tumorigenic ability, whereas E6SAT mutant, which is defective in p53 degradation showed activity close to wild-type E6. Interestingly, we found decreased expression of PAR3 in E6-expressing cells independently of E6AP, which has not been previously recognized. Therefore, we knocked down several PDZ-domain containing proteins including PAR3 in human cervical keratinocytes expressing E7, HRASG12V and E6Δ151 to examine whether depletion of these proteins can restore the tumorigenic ability. Single knockdown of SCRIB, MAGI1 or PAR3 significantly but partially restored the tumorigenic ability. The combinatorial knockdown of SCRIB and MAGI1 cooperatively restored the tumorigenic ability, and additional depletion of PAR3 further enhanced the tumorigenic ability surpassing that induced by wild-type E6. These data highlight the importance of the carboxy-terminal motif of the E6 protein and downregulation of PAR3 in tumorigenic transformation of human cervical keratinocytes.
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Affiliation(s)
- Yuki Yoshimatsu
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan.,Department of Pathology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Tomomi Nakahara
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Katsuyuki Tanaka
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Yuki Inagawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Mako Narisawa-Saito
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Takashi Yugawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Shin-Ichi Ohno
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Masatoshi Fujita
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan.,Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Hitoshi Nakagama
- Department of Pathology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,National Cancer Center, Tokyo, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
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16
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Aberrant Expression of the Cell Polarity Regulator aPKCλ/ι is Associated With Disease Progression in Cervical Intraepithelial Neoplasia (CIN): A Possible Marker for Predicting CIN Prognosis. Int J Gynecol Pathol 2016; 35:106-17. [PMID: 26535980 DOI: 10.1097/pgp.0000000000000228] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Atypical protein kinase C λ/ι (aPKCλ/ι) is a regulator of epithelial cellular polarity. It is also overexpressed in several cancers and functions in cell proliferation and invasion. Therefore, we hypothesized that aPKCλ/ι may be involved in development and progression of cervical intraepithelial neoplasia (CIN), the precancerous disease of cervical cancer induced by human papillomavirus. To do this, we investigated the relationship between aPKCλ/ι expression and CIN. aPKCλ/ι expression level and subcellular localization were assessed in 192 CIN biopsy samples and 13 normal epithelial samples using immunohistochemistry. aPKCλ/ι overexpression (normal epithelium, 7.7%; CIN1, 41.7%; CIN2/3, 76.4%) and aPKCλ/ι nuclear localization (normal epithelium, 0.0%; CIN1, 36.9%; CIN2/3, 78.7%) were higher in CIN samples than normal samples (P<0.05), suggesting that CIN grade is related to aPKCλ/ι overexpression and nuclear localization. Then, 140 CIN cases were retrospectively analyzed for 4-yr cumulative disease progression and regression rates using the Cox proportional hazards model. CIN1 cases with aPKCλ/ι overexpression or aPKCλ/ι nuclear localization had a higher progression rate than CIN1 cases with normal aPKCλ/ι expression levels or cytoplasmic localization (62.5% vs. 9.7% and 63.1% vs. 9.4%, respectively; P<0.001). Multivariate analysis indicated that human papillomavirus types 16 and 18, aPKCλ/ι overexpression (hazard ratio=4.26; 95% confidence interval, 1.50-12.1; P=0.007), and aPKCλ/ι nuclear localization (hazard ratio=3.59; 95% confidence interval, 1.24-10.4; P=0.019) were independent risk factors for CIN1 progression. In conclusion, aPKCλ/ι could be useful for the therapeutic management of patients with CIN, particularly those with non-human papillomavirus 16/18 types.
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17
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Kayama K, Watanabe S, Takafuji T, Tsuji T, Hironaka K, Matsumoto M, Nakayama KI, Enari M, Kohno T, Shiraishi K, Kiyono T, Yoshida K, Sugimoto N, Fujita M. GRWD1 negatively regulates p53 via the RPL11-MDM2 pathway and promotes tumorigenesis. EMBO Rep 2016; 18:123-137. [PMID: 27856536 DOI: 10.15252/embr.201642444] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 01/11/2023] Open
Abstract
The ribosomal protein L11 (RPL11) binds and inhibits the MDM2 ubiquitin ligase, thereby promoting p53 stability. Thus, RPL11 acts as a tumor suppressor. Here, we show that GRWD1 (glutamate-rich WD40 repeat containing 1) physically and functionally interacts with RPL11. GRWD1 is localized to nucleoli and is released into the nucleoplasm upon nucleolar stress. Silencing of GRWD1 increases p53 induction by nucleolar stress, whereas overexpression of GRWD1 reduces p53 induction. Furthermore, GRWD1 overexpression competitively inhibits the RPL11-MDM2 interaction and alleviates RPL11-mediated suppression of MDM2 ubiquitin ligase activity toward p53. These effects are mediated by the N-terminal region of GRWD1, including the acidic domain. Finally, we show that GRWD1 overexpression in combination with HPV16 E7 and activated KRAS confers anchorage-independent growth and tumorigenic capacity on normal human fibroblasts. Consistent with this, GRWD1 overexpression is associated with poor prognosis in cancer patients. Taken together, our results suggest that GRWD1 is a novel negative regulator of p53 and a potential oncogene.
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Affiliation(s)
- Kota Kayama
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinya Watanabe
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Takuya Takafuji
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Takahiro Tsuji
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kensuke Hironaka
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaki Matsumoto
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Keiichi I Nakayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Masato Enari
- Division of Refractory and Advancer Cancer, National Cancer Center Research Institute, Tokyo, Japan
| | - Takashi Kohno
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kouya Shiraishi
- Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazumasa Yoshida
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Nozomi Sugimoto
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Masatoshi Fujita
- Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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18
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Kranjec C, Doorbar J. Human papillomavirus infection and induction of neoplasia: a matter of fitness. Curr Opin Virol 2016; 20:129-136. [PMID: 27600900 DOI: 10.1016/j.coviro.2016.08.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 08/13/2016] [Accepted: 08/16/2016] [Indexed: 01/21/2023]
Abstract
The aetiologic association between infection with certain human papillomavirus (HPV) types, high-grade squamous neoplasia, and cancer at different epithelial sites is well established. In this review we briefly discuss recent breakthroughs in the regulation of squamous epithelia in homeostasis and disease, and provide a view of how these discoveries modify our understanding of how HPV-induced neoplasia in squamous epithelia is triggered. Taken together, these observations highlight how HPVs have evolved the ability to inactivate the products of genes that are frequently mutated in non-HPV-associated pre-neoplasia and squamous cell carcinoma of sun-exposed skin, and introduce a Darwinian model of clonal evolution of HPV-infected cells. These concepts are considered against our current understanding of transformation zones where HPV-associated cancers occur more frequently, and other sites of non-productive (or abortive) HPV infection.
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Affiliation(s)
- Christian Kranjec
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK
| | - John Doorbar
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
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Chopjitt P, Pientong C, Sunthamala N, Kongyingyoes B, Haonon O, Boonmars T, Kikawa S, Nakahara T, Kiyono T, Ekalaksananan T. E6D25E, HPV16 Asian variant shows specific proteomic pattern correlating in cells transformation and suppressive innate immune response. Biochem Biophys Res Commun 2016; 478:417-423. [PMID: 27392712 DOI: 10.1016/j.bbrc.2016.07.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 07/04/2016] [Indexed: 11/19/2022]
Abstract
HPV16 Asian variant (HPV16As) containing E6D25E oncogene, is commonly associated with cervical cancers of Asian populations. To explore a mechanism of E6D25E oncoprotein in carcinogenesis, we compared protein profiles in human keratinocytes expressing E6D25E with E6 of HPV16 prototype (E6Pro). A human cervical keratinocyte cell line, HCK1T, was transduced with retroviruses containing E6D25E or E6Pro genes. Biological properties of E6D25E or E6Pro transduced HCK1T cells were characterized. Protein profiles of the transduced HCK1T cells were analyzed using 2D-PAGE and characterized by mass spectrometry and western blotting. Reactomes of modulated proteins were analyzed by using the Reactome Knowledgebase. The E6D25E and E6Pro oncoproteins were comparable for their abilities to degrade p53 and suppress the induction of p21, and induce cell proliferation. Interestingly, the protein profiles of the HCK1T cells transduced with E6D25E showed specific proteomic patterns different from those with E6Pro. Among altered proteins, more than 1.5-fold up- or down- regulation was observed in E6D25E-expressing cells for gp96 and keratin7 which involved in activation of TLR signaling and transformation of squamocolumnar junction cells, respectively. This report describes new cellular proteins specifically targeted by E6D25E oncoprotein that may contribute to impair immune response against viral infection and cell transformation associated with oncogenic property of HPV16As variant.
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Affiliation(s)
- Peechanika Chopjitt
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Thailand
| | - Chamsai Pientong
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Thailand
| | - Nuchsupha Sunthamala
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Thailand
| | - Bunkerd Kongyingyoes
- Department of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Ornuma Haonon
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Thidarut Boonmars
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Satomi Kikawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Tomomi Nakahara
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
| | - Tipaya Ekalaksananan
- Department of Microbiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; HPV & EBV and Carcinogenesis Research Group, Khon Kaen University, Thailand.
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20
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Roh MR, Kim JH, Lee SH, Oh SJ, Park KH, Chung KY, Rha SY. Prevalence of human papillomavirus infection and RAS mutation in sporadic keratoacanthoma. Int J Dermatol 2015; 54:e453-7. [PMID: 26016383 DOI: 10.1111/ijd.12669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 01/01/2014] [Accepted: 01/21/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND RAS gene activation and its association with human papillomavirus (HPV) infection have been extensively studied in various cancers. However, the correlation between RAS mutations and HPV in keratoacanthoma (KA) has not yet been investigated. METHODS Detection of HPV DNA was performed by nested polymerase chain reaction in 28 KA specimens. Molecular analysis was also performed to identify oncogenic mutations (HRAS, KRAS, NRAS). Statistical analyses were performed using the Fisher's exact tests. RESULTS HPV DNA was detected in eight (28.6%) of the 28 samples, and RAS mutations were detected in eight (28.6%). Six samples had an HRAS mutation, and two showed the NRAS mutation. The presence of an RAS mutation was significantly correlated with a history of chronic sun damage (P = 0.005). However, no significant correlation was observed between HPV infection and RAS mutation. CONCLUSIONS Our findings suggest that mutational activation of the RAS gene is a common event in KA. However, RAS oncogene activation and HPV infection seem to represent two independent factors in the development of KA.
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Affiliation(s)
- Mi Ryung Roh
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jee Hung Kim
- Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Hee Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Joon Oh
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Kyu Hyun Park
- Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - Kee Yang Chung
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Young Rha
- Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
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21
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Chopjitt P, Pientong C, Bumrungthai S, Kongyingyoes B, Ekalaksananan T. Activities of E6 Protein of Human Papillomavirus 16 Asian Variant on miR-21 Up-regulation and Expression of Human Immune Response Genes. Asian Pac J Cancer Prev 2015; 16:3961-8. [DOI: 10.7314/apjcp.2015.16.9.3961] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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22
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Transcriptional Dynamics of Immortalized Human Mesenchymal Stem Cells during Transformation. PLoS One 2015; 10:e0126562. [PMID: 25978455 PMCID: PMC4433180 DOI: 10.1371/journal.pone.0126562] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 04/03/2015] [Indexed: 12/23/2022] Open
Abstract
Comprehensive analysis of alterations in gene expression along with neoplastic transformation in human cells provides valuable information about the molecular mechanisms underlying transformation. To further address these questions, we performed whole transcriptome analysis to the human mesenchymal stem cell line, UE6E7T-3, which was immortalized with hTERT and human papillomavirus type 16 E6/E7 genes, in association with progress of transformation in these cells. At early stages of culture, UE6E7T-3 cells preferentially lost one copy of chromosome 13, as previously described; in addition, tumor suppressor genes, DNA repair genes, and apoptosis-activating genes were overexpressed. After the loss of chromosome 13, additional aneuploidy and genetic alterations that drove progressive transformation, were observed. At this stage, the cell line expressed oncogenes as well as genes related to anti-apoptotic functions, cell-cycle progression, and chromosome instability (CIN); these pro-tumorigenic changes were concomitant with a decrease in tumor suppressor gene expression. At later stages after prolong culture, the cells exhibited chromosome translocations, acquired anchorage-independent growth and tumorigenicity in nude mice, (sarcoma) and exhibited increased expression of genes encoding growth factor and DNA repair genes, and decreased expression of adhesion genes. In particular, glypican-5 (GPC5), which encodes a cell-surface proteoglycan that might be a biomarker for sarcoma, was expressed at high levels in association with transformation. Patched (Ptc1), the cell surface receptor for hedgehog (Hh) signaling, was also significantly overexpressed and co-localized with GPC5. Knockdown of GPC5 expression decreased cell proliferation, suggesting that it plays a key role in growth in U3-DT cells (transformants derived from UE6E7T-3 cells) through the Hh signaling pathway. Thus, the UE6E7T-3 cell culture model is a useful tool for assessing the functional contribution of genes showed by expression profiling to the neoplastic transformation of human fibroblasts and human mesenchymal stem cells (hMSC).
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23
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Manzo-Merino J, Contreras-Paredes A, Vázquez-Ulloa E, Rocha-Zavaleta L, Fuentes-Gonzalez AM, Lizano M. The Role of Signaling Pathways in Cervical Cancer and Molecular Therapeutic Targets. Arch Med Res 2014; 45:525-39. [DOI: 10.1016/j.arcmed.2014.10.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 10/29/2014] [Indexed: 12/24/2022]
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24
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Inagawa Y, Yamada K, Yugawa T, Ohno SI, Hiraoka N, Esaki M, Shibata T, Aoki K, Saya H, Kiyono T. A human cancer xenograft model utilizing normal pancreatic duct epithelial cells conditionally transformed with defined oncogenes. Carcinogenesis 2014; 35:1840-6. [PMID: 24858378 DOI: 10.1093/carcin/bgu112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Pancreatic ductal adenocarcinomas (PDACs) are considered to arise through neoplastic transformation of human pancreatic duct epithelial cells (HPDECs). In order to evaluate the biological significance of genetic and epigenetic alterations in PDACs, we isolated primary HPDECs and established an in vitro carcinogenesis model. Firstly, lentivirus-mediated transduction of KRAS(G12V), MYC and human papillomavirus 16 (HPV16) E6/E7 under the control of a tetracyclin-inducible promoter efficiently immortalized and transformed primary HPDECs, which gave rise to adenocarcinomas subcutaneously in an immune-deficient mouse xenograft model, depending on expression of the four genes. The tumors regressed promptly upon shutting-off the oncogenes, and the remaining tissues showed histological features corresponding to normal ductal structures with simple columnar epithelium. Reexpression of the oncogenes resulted in development of multiple PDACs through pancreatic intraepithelial neoplasia-like structures. We also succeeded in efficient immortalization of primary HPDECs with transduction of mutant CDK4, cyclin D1 and TERT. The cells maintained a normal diploid status and formed duct-like structures in a three-dimensional culture. In combination with p53 silencing, KRAS(G12V) alone was sufficient to fully transform the immortalized HPDECs, and MYC markedly accelerated the development of tumors. Our PDAC model supports critical roles of KRAS mutations, inactivation of the p53 and p16-pRB pathways, active telomerase and MYC expression in pancreatic carcinogenesis and thus recapitulates many features of human PDAC development. The present system with reversible control of oncogene expression enabled de novo development of PDAC from quasinormal human tissues preformed subcutaneously in mice and might be applicable to carcinogenesis models in many organ sites.
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MESH Headings
- Animals
- Blotting, Western
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/metabolism
- Carcinoma, Pancreatic Ductal/pathology
- Cell Culture Techniques
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Cells, Cultured
- Cyclin D1/genetics
- Cyclin-Dependent Kinase 4/genetics
- Epithelial Cells/metabolism
- Epithelial Cells/pathology
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunoenzyme Techniques
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Mutation/genetics
- Oncogenes/physiology
- Pancreatic Ducts/metabolism
- Pancreatic Ducts/pathology
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/pathology
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins p21(ras)
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Telomerase/genetics
- Tumor Suppressor Protein p53/genetics
- Xenograft Model Antitumor Assays
- ras Proteins/genetics
- Pancreatic Neoplasms
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Affiliation(s)
- Yuki Inagawa
- Division of Virology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan, Division of Gene Regulation, Institute for Advanced Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Kenji Yamada
- Division of Virology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Takashi Yugawa
- Division of Virology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Shin-ichi Ohno
- Division of Virology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Nobuyoshi Hiraoka
- Division of Molecular Pathology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Minoru Esaki
- Hepatobiliary and Pancreatic Surgery Division, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan and
| | | | - Kazunori Aoki
- Division of Gene and Immune Medicine, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
| | - Hideyuki Saya
- Division of Gene Regulation, Institute for Advanced Medical Research, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Tohru Kiyono
- Division of Virology, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan,
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25
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Uekita T, Fujii S, Miyazawa Y, Iwakawa R, Narisawa-Saito M, Nakashima K, Tsuta K, Tsuda H, Kiyono T, Yokota J, Sakai R. Oncogenic Ras/ERK signaling activates CDCP1 to promote tumor invasion and metastasis. Mol Cancer Res 2014; 12:1449-59. [PMID: 24939643 DOI: 10.1158/1541-7786.mcr-13-0587] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
UNLABELLED Involvement of Ras in cancer initiation is known, but recent evidence indicates a role in cancer progression, including metastasis and invasion; however, the mechanism is still unknown. In this study, it was determined that human lung cancer cells with Ras mutations, among other popular mutations, showed significantly higher expression of CUB domain-containing protein 1 (CDCP1) than those without. Furthermore, activated Ras clearly induced CDCP1, whereas CDCP1 knockdown or inhibition of CDCP1 phosphorylation by Src-directed therapy abrogated anoikis resistance, migration, and invasion induced by activated-Ras. Activation of MMP2 and secretion of MMP9, in a model of Ras-induced invasion, was found to be regulated through induction of phosphorylated CDCP1. Thus, CDCP1 is required for the functional link between Ras and Src signaling during the multistage development of human malignant tumors, highlighting CDCP1 as a potent target for treatment in the broad spectrum of human cancers associated with these oncogenes. IMPLICATIONS CDCP1 protein induced by oncogenic Ras/Erk signaling is essential for Ras-mediated metastatic potential of cancer cells.
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Affiliation(s)
- Takamasa Uekita
- Division of Metastasis and Invasion Signaling, National Cancer Center Research Institute, Tokyo, Japan. Department of Applied Chemistry, National Defense Academy, Yokosuka, Kanagawa, Japan
| | - Satoko Fujii
- Division of Metastasis and Invasion Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Yuri Miyazawa
- Division of Metastasis and Invasion Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Reika Iwakawa
- Division of Multistep Carcinogenesis, National Cancer Research Institute, Tokyo, Japan
| | - Mako Narisawa-Saito
- Division of Virology, National Cancer Center Research Institute, Tokyo, Japan
| | - Katsuhiko Nakashima
- Division of Metastasis and Invasion Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Koji Tsuta
- Department of Pathology and Clinical Laboratory, National Cancer Center Hospital, Tokyo, Japan
| | - Hitoshi Tsuda
- Department of Pathology and Clinical Laboratory, National Cancer Center Hospital, Tokyo, Japan
| | - Tohru Kiyono
- Division of Virology, National Cancer Center Research Institute, Tokyo, Japan
| | - Jun Yokota
- Division of Multistep Carcinogenesis, National Cancer Research Institute, Tokyo, Japan
| | - Ryuichi Sakai
- Division of Metastasis and Invasion Signaling, National Cancer Center Research Institute, Tokyo, Japan.
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Characterization of NOL7 gene point mutations, promoter methylation, and protein expression in cervical cancer. Int J Gynecol Pathol 2014; 31:15-24. [PMID: 22123719 DOI: 10.1097/pgp.0b013e318220ba16] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
NOL7 is a putative tumor suppressor gene localized to 6p23, a region with frequent loss of heterozygosity in a number of cancers, including cervical cancer (CC). We have previously demonstrated that reintroduction of NOL7 into CC cells altered the angiogenic phenotype and suppressed tumor growth in vivo by 95%. Therefore, to understand its mechanism of inactivation in CC, we investigated the genetic and epigenetic regulation of NOL7. NOL7 mRNA and protein levels were assessed in 13 CC cell lines and 23 consecutive CC specimens by real-time quantitative polymerase chain reaction, western blotting, and immunohistochemistry. Methylation of the NOL7 promoter was analyzed by bisulfite sequencing and mutations were identified through direct sequencing. A CpG island with multiple CpG dinucleotides spanned the 5' untranslated region and first exon of NOL7. However, bisulfite sequencing failed to identify persistent sites of methylation. Mutational sequencing revealed that 40% of the CC specimens and 31% of the CC cell lines harbored somatic mutations that may affect the in vivo function of NOL7. Endogenous NOL7 mRNA and protein expression in CC cell lines were significantly decreased in 46% of the CC cell lines. Finally, immunohistochemistry demonstrated strong NOL7 nucleolar staining in normal tissues that decreased with histologic progression toward CC. NOL7 is inactivated in CC in accordance with the Knudson 2-hit hypothesis through loss of heterozygosity and mutation. Together with evidence of its in vivo tumor suppression, these data support the hypothesis that NOL7 is the legitimate tumor suppressor gene located on 6p23.
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27
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E6 protein of human papillomavirus 16 (HPV16) expressed in Escherichia coli sans a stretch of hydrophobic amino acids, enables purification of GST-ΔE6 in the soluble form and retains the binding ability to p53. Protein Expr Purif 2013; 92:41-7. [DOI: 10.1016/j.pep.2013.08.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/13/2013] [Accepted: 08/14/2013] [Indexed: 01/05/2023]
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28
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Noncanonical NOTCH signaling limits self-renewal of human epithelial and induced pluripotent stem cells through ROCK activation. Mol Cell Biol 2013; 33:4434-47. [PMID: 24019071 DOI: 10.1128/mcb.00577-13] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
NOTCH plays essential roles in cell fate specification during embryonic development and in adult tissue maintenance. In keratinocytes, it is a key inducer of differentiation. ROCK, an effector of the small GTPase Rho, is also implicated in keratinocyte differentiation, and its inhibition efficiently potentiates immortalization of human keratinocytes and greatly improves survival of dissociated human pluripotent stem cells. However, the molecular basis for ROCK activation is not fully established in these contexts. Here we provide evidence that intracellular forms of NOTCH1 trigger the immediate activation of ROCK1 independent of its transcriptional activity, promoting differentiation and resulting in decreased clonogenicity of normal human keratinocytes. Knockdown of NOTCH1 abrogated ROCK1 activation and conferred sustained clonogenicity upon differentiation stimuli. Treatment with a ROCK inhibitor, Y-27632, or ROCK1 silencing substantially rescued the growth defect induced by activated NOTCH1. Furthermore, we revealed that impaired self-renewal of human induced pluripotent stem cells upon dissociation is, at least in part, attributable to NOTCH-dependent ROCK activation. Thus, the present study unveils a novel NOTCH-ROCK pathway critical for cellular differentiation and loss of self-renewal capacity in a subset of immature cells.
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29
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Bononi I, Bosi S, Bonaccorsi G, Marci R, Patella A, Ferretti S, Tognon M, Garutti P, Martini F. Establishment of keratinocyte colonies from small-sized cervical intraepithelial neoplasia specimens. J Cell Physiol 2012; 227:3787-95. [PMID: 22392909 DOI: 10.1002/jcp.24088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The size of human cervical intraepithelial neoplasia (CIN) biopsies is usually very small and standard methods do not allow an adequate number of keratinocytes to be isolated for culturing purposes. In this study, a new approach to establish keratinocyte cultures from small CIN a tissue fragments was developed. Neoplastic specimens and corresponding normal tissues, which were used as controls, were digested with collagenase. Tissue-derived fibroblasts and keratinocytes were co-cultured in calcium and serum medium. Single keratinocyte colonies from primary cultures were expanded using a culture medium optimized in our laboratory. Primary keratinocyte colonies, as well as expanded colonies, were tested for epithelial and cervical markers such as 5, 14, 17, and 19 keratins, and p63 by immunofluorescence. Our results indicate that a variable number of primary keratinocyte colonies could be detected in neoplastic cultures, depending on the grade of cervical lesions from which the colonies originated. Single colonies, when cultured with our new medium, grew at a high rate with uniform size and morphology for some passages. Epithelial and p63 markers were expressed in keratinocyte colonies, as well as in expanded colonies. In conclusion, our study reports a rapid and easy culturing system which enables keratinocyte colonies from minute cervical tumor tissues to be obtained. Moreover, using the new culture medium, keratinocyte colonies can be expanded at a high proliferative rate.
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Affiliation(s)
- Ilaria Bononi
- Section of Cell Biology and Molecular Genetics, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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30
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Samarzija I, Beard P. Hedgehog pathway regulators influence cervical cancer cell proliferation, survival and migration. Biochem Biophys Res Commun 2012; 425:64-9. [PMID: 22820185 DOI: 10.1016/j.bbrc.2012.07.051] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 07/11/2012] [Indexed: 12/27/2022]
Abstract
Human papillomavirus (HPV) infection is considered to be a primary hit that causes cervical cancer. However, infection with this agent, although needed, is not sufficient for a cancer to develop. Additional cellular changes are required to complement the action of HPV, but the precise nature of these changes is not clear. Here, we studied the function of the Hedgehog (Hh) signaling pathway in cervical cancer. The Hh pathway can have a role in a number of cancers, including those of liver, lung and digestive tract. We found that components of the Hh pathway are expressed in several cervical cancer cell lines, indicating that there could exists an autocrine Hh signaling loop in these cells. Inhibition of Hh signaling reduces proliferation and survival of the cervical cancer cells and induces their apoptosis as seen by the up-regulation of the pro-apoptotic protein cleaved caspase 3. Our results indicate that Hh signaling is not induced directly by HPV-encoded proteins but rather that Hh-activating mutations are selected in cells initially immortalized by HPV. Sonic Hedgehog (Shh) ligand induces proliferation and promotes migration of the cervical cancer cells studied. Together, these results indicate pro-survival and protective roles of an activated Hh signaling pathway in cervical cancer-derived cells, and suggest that inhibition of this pathway may be a therapeutic option in fighting cervical cancer.
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Affiliation(s)
- Ivana Samarzija
- Ecole Polytechnique Fédérale Lausanne (EPFL), Department of Life Sciences, Swiss Institute for Experimental Cancer Research (ISREC), 1015 Lausanne, Switzerland
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31
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Narisawa-Saito M, Inagawa Y, Yoshimatsu Y, Haga K, Tanaka K, Egawa N, Ohno SI, Ichikawa H, Yugawa T, Fujita M, Kiyono T. A critical role of MYC for transformation of human cells by HPV16 E6E7 and oncogenic HRAS. Carcinogenesis 2012; 33:910-7. [DOI: 10.1093/carcin/bgs104] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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32
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Li K, Jin X, Fang Y, Wang C, Gong M, Chen P, Liu J, Deng D, Ai J. Correlation between physical status of human papilloma virus and cervical carcinogenesis. ACTA ACUST UNITED AC 2012; 32:97-102. [PMID: 22282253 DOI: 10.1007/s11596-012-0017-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Indexed: 11/29/2022]
Abstract
The prevalence of human papilloma virus (HPV)-16 in patients with cervical cancer, the physical status of HPV-16 in patients with cervical lesions, and the role of HPV-16 integration in cervical carcinogenesis were investigated. HPV genotyping was performed by using PCR approach with the primer GP5+/GP6+ and type-specific primer on biopsy specimens taken operatively from 198 women. Multiple PCR was done to detect physical status of HPV-16 in a series of cervical liquid-based cytology samples and biopsy specimens obtained from different cervical lesions with HPV-16 infection, including 112 specimens with cervical cancer, 151 specimens with CIN I, 246 specimens with CIN and 120 specimens with CINIII. The results showed that there were 112 cervical cancer samples (56.57% of total cervical cancer patients) with HPV-16 infection. The frequency of HPV-16 pure integration was 65.18% (73/112), 56.57% (47/120), 23.58% (58/246) and 7.95% (12/151) in cervical cancer, CINIII, CINII and CINI patients respectively. In situ hybridization was performed on some paraffin-embedded sections of CINII, CINIII and cervical cancer to verify the physical status of HPV-16 infection. Significant difference was observed between cervical cancer and CIN I, CINII, CINIII in the frequency of HPV-16 integration (P<0.01). It is suggested that HPV-16 is the most prevalent type and is associated with cervical cancer. In the case of HPV-16 infection there are close associations between the severity of cervical lesions and the frequency of HPV-16 integration. The application of testing HPV genotyping and physical status based on detection of HC-II HPV DNA would be in favor of predicting the prognosis of cervical precancerosis and enhancing the screening accuracy of cervical cancer.
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Affiliation(s)
- Kezhen Li
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xin Jin
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yong Fang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Changyu Wang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Mei Gong
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Pingbo Chen
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jia Liu
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Dongrui Deng
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jihui Ai
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Yokoi T, Seko Y, Yokoi T, Makino H, Hatou S, Yamada M, Kiyono T, Umezawa A, Nishina H, Azuma N. Establishment of functioning human corneal endothelial cell line with high growth potential. PLoS One 2012; 7:e29677. [PMID: 22276123 PMCID: PMC3261867 DOI: 10.1371/journal.pone.0029677] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 12/02/2011] [Indexed: 12/13/2022] Open
Abstract
Hexagonal-shaped human corneal endothelial cells (HCEC) form a monolayer by adhering tightly through their intercellular adhesion molecules. Located at the posterior corneal surface, they maintain corneal translucency by dehydrating the corneal stroma, mainly through the Na(+)- and K(+)-dependent ATPase (Na(+)/K(+)-ATPase). Because HCEC proliferative activity is low in vivo, once HCEC are damaged and their numbers decrease, the cornea begins to show opacity due to overhydration, resulting in loss of vision. HCEC cell cycle arrest occurs at the G1 phase and is partly regulated by cyclin-dependent kinase inhibitors (CKIs) in the Rb pathway (p16-CDK4/CyclinD1-pRb). In this study, we tried to activate proliferation of HCEC by inhibiting CKIs. Retroviral transduction was used to generate two new HCEC lines: transduced human corneal endothelial cell by human papillomavirus type E6/E7 (THCEC (E6/E7)) and transduced human corneal endothelial cell by Cdk4R24C/CyclinD1 (THCEH (Cyclin)). Reverse transcriptase polymerase chain reaction analysis of gene expression revealed little difference between THCEC (E6/E7), THCEH (Cyclin) and non-transduced HCEC, but cell cycle-related genes were up-regulated in THCEC (E6/E7) and THCEH (Cyclin). THCEH (Cyclin) expressed intercellular molecules including ZO-1 and N-cadherin and showed similar Na(+)/K(+)-ATPase pump function to HCEC, which was not demonstrated in THCEC (E6/E7). This study shows that HCEC cell cycle activation can be achieved by inhibiting CKIs even while maintaining critical pump function and morphology.
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Affiliation(s)
- Tadashi Yokoi
- Department of Ophthalomology, National Center for Child Health and Development, Tokyo, Japan
- Department of Developmental and Regenerative Biology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - Yuko Seko
- Department of Ophthalomology, National Center for Child Health and Development, Tokyo, Japan
- Sensory Functions Section, Research Institute, National Rehabilitation Center for Persons with Disabilities, Tokyo, Japan
| | - Tae Yokoi
- Department of Ophthalomology, National Center for Child Health and Development, Tokyo, Japan
| | - Hatsune Makino
- Department of Reproductive Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shin Hatou
- Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan
| | - Masakazu Yamada
- Division for Vision Research, National Institute of Sensory Organs, National Tokyo Medical Center, Tokyo, Japan
| | - Tohru Kiyono
- Division of Virology, National Cancer Center Research Institute, Tokyo, Japan
| | - Akihiro Umezawa
- Department of Reproductive Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hiroshi Nishina
- Department of Developmental and Regenerative Biology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku Tokyo, Japan
| | - Noriyuki Azuma
- Department of Ophthalomology, National Center for Child Health and Development, Tokyo, Japan
- * E-mail:
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Goto A, Li CP, Ota S, Niki T, Ohtsuki Y, Kitajima S, Yonezawa S, Koriyama C, Akiba S, Uchima H, Lin YM, Yeh KT, Koh JS, Kim CW, Kwon KY, Nga ME, Fukayama M. Human papillomavirus infection in lung and esophageal cancers: analysis of 485 Asian cases. J Med Virol 2011; 83:1383-90. [PMID: 21678442 DOI: 10.1002/jmv.22150] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The role of human papillomavirus (HPV) in the development of lung and esophageal cancer remains inconclusive, which is in contrast to the established role HPV plays in the development of uterine cervical cancer. One of the reasons for this is the difference among reported HPV infection rates in these cancers. An analysis of 485 lung and esophageal cancers (176 lung squamous cell carcinoma, 128 lung adenocarcinoma, 181 esophageal carcinoma) in eight institutions in Asia (Tokyo, Kochi, Kagoshima, and Okinawa, Japan; Seoul and Daegu, Korea; Changhua, Republic of China (Taiwan); Singapore, Singapore) was carried out in order to clarify infection rates with HPV. Samples were examined in one laboratory of the Department of Pathology, the University of Tokyo, Japan in order to avoid inter-laboratory variation using a combination of polymerase chain reaction and in situ hybridization (ISH). HPV was found in 6.3%, 7%, and 9.4% of patients with lung squamous cell carcinoma, lung adenocarcinoma, and esophageal cancer, respectively. Among the geographic areas surveyed, Kagoshima exhibited a significantly higher prevalence of HPV infection in cases of esophageal carcinoma (24.1%). There was no geographical difference in the infection rates of HPV in lung carcinomas. Subtype-specific ISH was also performed, which identified the high-risk HPV types 16/18 in the majority (75.7%) of the patients with lung and esophageal cancer positive for HPV.
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Affiliation(s)
- Akiteru Goto
- Department of Human Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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35
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Zhang Y, Reng SR, Wang L, Lu L, Zhao ZH, Zhang ZK, Feng XD, Ding XD, Wang J, Feng G, Dai TZ, Pu J, Du XB. Overexpression of Y-box binding protein-1 in cervical cancer and its association with the pathological response rate to chemoradiotherapy. Med Oncol 2011; 29:1992-7. [DOI: 10.1007/s12032-011-0062-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 08/29/2011] [Indexed: 11/30/2022]
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36
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Zhang X, Wang C, Wang L, Du L, Wang S, Zheng G, Li W, Zhuang X, Zhang X, Dong Z. Detection of circulating Bmi-1 mRNA in plasma and its potential diagnostic and prognostic value for uterine cervical cancer. Int J Cancer 2011; 131:165-72. [PMID: 21858805 DOI: 10.1002/ijc.26360] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 07/26/2011] [Indexed: 01/22/2023]
Abstract
Bmi-1 is overexpressed in uterine cervical cancer (UCC) and is found to be associated with adverse clinical characteristics and poor prognosis. However, little information is available on the status of circulating Bmi-1 mRNA in UCC. Because circulating cell-free nucleic acids have emerged as a novel class of markers for cancer detection, our research aims to address this question by detecting the circulating Bmi-1 mRNA and to assess its diagnostic and prognostic potential in UCC. Reverse transcription quantitative real-time PCR method was established to detect the circulating Bmi-1 mRNA in plasma of 109 patients with UCC, 138 patients with cervical intraepithelial neoplasia (CIN) and 80 healthy volunteers, and found that it was significantly increased in UCC compared with CINs and healthy controls (all at p < 0.001). Moreover, its high level was significantly correlated with advanced clinical stage (p < 0.001) and positive lymph nodes metastasis (p = 0.002). The area under the receiver operating characteristic curve (AUC) was 0.881, and the optimal cut-off value was 0.057, providing a sensitivity of 69.7% and a specificity of 95.9%. The AUC for circulating Bmi-1 mRNA showed higher diagnosis capability than that for SCC-Ag (p = 0.035) or CA125 (p < 0.001) currently utilized. Kaplan-Meier analysis demonstrated a correlation between increased circulating Bmi-1 mRNA level and reduced disease-free survival (DFS) (p = 0.001) and overall survival (OS) (p = 0.015). And, Cox analysis indicated that it was an independent prognostic factor for DFS and OS. We conclude that circulating Bmi-1 mRNA may be a potential noninvasive molecular marker for diagnosis and prognosis of UCC.
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Affiliation(s)
- Xin Zhang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan China
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37
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Plummer M, Peto J, Franceschi S. Time since first sexual intercourse and the risk of cervical cancer. Int J Cancer 2011; 130:2638-44. [PMID: 21702036 DOI: 10.1002/ijc.26250] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Accepted: 06/06/2011] [Indexed: 01/04/2023]
Abstract
Young age at first sexual intercourse (AFI) is an important risk factor for cervical cancer, but no simple statistical model of its influence has been established. We investigated the relationship between risk of cervical carcinoma and time since first intercourse using data on monogamous women (5,074 cases and 16,137 controls) from the International Collaboration of Epidemiological Studies of Cervical Cancer. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated from pooled data on 20 studies using conditional logistic regression. The OR for invasive cervical carcinoma is approximately proportional to the square of time since first intercourse (exponent 1.95, 95% CI: 1.76-2.15) up to age 45. First cervical infection with human papillomavirus (HPV) often occurs soon after first sexual intercourse, so early AFI is a reasonable proxy for early age at first exposure to HPV. In addition, age-specific incidence rates of cervical cancer in unscreened populations remain fairly constant above age 45. Cervical cancer thus resembles other cancers caused by strong early-stage carcinogens, with incidence rates proportional to a power of time since first exposure and also resembles cancers of the breast and other hormone-dependent epithelia, where a similar flattening of age-specific incidence rates is seen at the time menopausal changes start. Taken together, these observations suggest that HPV vaccination may prevent the majority of cervical cancers by delaying HPV infection without necessarily providing lifetime protection against HPV.
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Affiliation(s)
- Martyn Plummer
- International Agency for Research on Cancer, Lyon, France.
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38
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Nucleotide deficiency promotes genomic instability in early stages of cancer development. Cell 2011; 145:435-46. [PMID: 21529715 DOI: 10.1016/j.cell.2011.03.044] [Citation(s) in RCA: 623] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 01/18/2011] [Accepted: 03/29/2011] [Indexed: 12/28/2022]
Abstract
Chromosomal instability in early cancer stages is caused by stress on DNA replication. The molecular basis for replication perturbation in this context is currently unknown. We studied the replication dynamics in cells in which a regulator of S phase entry and cell proliferation, the Rb-E2F pathway, is aberrantly activated. Aberrant activation of this pathway by HPV-16 E6/E7 or cyclin E oncogenes significantly decreased the cellular nucleotide levels in the newly transformed cells. Exogenously supplied nucleosides rescued the replication stress and DNA damage and dramatically decreased oncogene-induced transformation. Increased transcription of nucleotide biosynthesis genes, mediated by expressing the transcription factor c-myc, increased the nucleotide pool and also rescued the replication-induced DNA damage. Our results suggest a model for early oncogenesis in which uncoordinated activation of factors regulating cell proliferation leads to insufficient nucleotides that fail to support normal replication and genome stability.
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Yamato K, Egawa N, Endo S, Ui-Tei K, Yamada T, Saigo K, Hyodo I, Kiyono T, Nakagawa I. Enhanced specificity of HPV16 E6E7 siRNA by RNA-DNA chimera modification. Cancer Gene Ther 2011; 18:587-97. [PMID: 21660064 DOI: 10.1038/cgt.2011.28] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although efforts have been made to develop new drugs for infectious and neoplastic diseases utilizing synthetic small interfering RNA(siRNAs), those intrinsically have undesirable effects, including silencing of unintended genes (off-target effect) and nonspecific cytotoxicity. Off-target effects can be avoided by DNA substitution in the guide strand (GS) seed region of nucleotide positions 1-8 and its complementary part of the passenger strand plus the 3' overhang, which is designated as a double-strand RNA-DNA chimera (dsRDC). In this study, we found that the specificity of potent siRNAs targeting human papillomavirus 16 (HPV16) E6 and E7 oncogenes, which we previously reported, could be enhanced by short dsRDC modification (first six nucleotides from the 5' end of the GS and its complementary nucleotides of the passenger strand). Such dsRDC modification reduced nonspecific cytotoxicity in two of three siRNAs (497 and 752), although not in the other (573), which correlated with their off-target effects. In addition, silencing activity was marginally impaired in two dsRDCs (497 and 573) and moderately in one (752). Finally, dsRDC-497 induced E6E7-specific growth suppression of cervical cancer cells as well as E6E7-immortalized human keratinocytes. Our results show that dsRDC modification enhances the specificity of E6E7 siRNA, which is required for use in in vivo settings.
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Affiliation(s)
- K Yamato
- Section of Bacterial Pathogenesis, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Japan.
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40
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Shaker M, Yokoyama Y, Mori S, Tsujimoto M, Kawaguchi N, Kiyono T, Nakano T, Matsuura N. Aberrant expression of disintegrin-metalloprotease proteins in the formation and progression of uterine cervical cancer. Pathobiology 2011; 78:149-61. [PMID: 21613802 DOI: 10.1159/000324314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Accepted: 01/13/2011] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Dysregulated expression of disintegrin-metalloprotease proteins [a disintegrin and metalloproteases (ADAMs) and ADAMs with thrombospondin motif (ADAMTSs)] has been reported in many types of cancers and is believed to play an important role in cancer formation and metastasis. However, little is known about the expression of ADAMs and ADAMTSs in the development of human cervical cancer. METHODS Reverse transcriptase polymerase chain reaction and immunoblotting were performed to assess the expression of several disintegrin-metalloproteases and tissue inhibitors of metalloproteinases (TIMPs) in squamous-type cervical cancer cells and oncogenically modified keratinocytes (immortalized human cervical keratinocytes transduced with human papilloma virus-16 E6/E7 proteins with or without oncogenes). Immunohistochemistry of ADAM-9, ADAM-10 and TIMP-3 was performed on 31 primary human cervical tissue specimens of preinvasive and invasive cervical carcinoma. RESULTS mRNA levels of ADAM-9, ADAM-10, ADAM-12, TIMP-2 and TIMP-3 were upregulated as cervical cells progressed from dysplastic to malignant lesions compared to normal cervical cells. These results were corroborated at the protein level by Western blot analysis and immunohistochemistry. CONCLUSION The expression of disintegrin-metalloproteases and their endogenous regulators was dysregulated during cervical carcinogenesis. The aberrant expression of ADAMs might contribute to the pathogenesis of cervical cancer formation and progression.
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Affiliation(s)
- Mohammed Shaker
- Department of Molecular Pathology, Graduate School of Medicine, Osaka University, Japan
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41
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Mizumoto Y, Kyo S, Kiyono T, Takakura M, Nakamura M, Maida Y, Mori N, Bono Y, Sakurai H, Inoue M. Activation of NF-kappaB is a novel target of KRAS-induced endometrial carcinogenesis. Clin Cancer Res 2011; 17:1341-50. [PMID: 21411444 DOI: 10.1158/1078-0432.ccr-10-2291] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Although the KRAS mutation is one of critical genetic alterations in endometrial carcinogenesis, the downstream targets are not known. EXPERIMENTAL DESIGN In this study, we investigated the molecular targets of KRAS signals, using tumorigenic cells with oncogenic KRAS mutation established from telomerase reverse transcriptase (TERT)-immortalized endometrial epithelial cells. RESULTS We first confirmed that the RAF-ERK pathway, but not the PI3K-Akt pathway, was activated in KRAS tumorigenic cells. However, the introduction of constitutively active MAP/ERK kinase into immortalized cells to mimic RAF-ERK activation failed to obtain tumorigenic phenotypes, indicating the existence of other carcinogenic pathways triggered by KRAS. Recent evidence suggestive of linkage with KRAS signals prompted us to examine the involvement of NF-κB in endometrial carcinogenesis. We found that the DNA-binding activity of NF-κB was markedly elevated in KRAS tumorigenic cells compared with TERT-immortalized cells. Furthermore, the ability of NF-κB to activate the target gene promoters significantly increased in KRAS tumorigenic cells. Introduction of a mutant IκB that is resistant to degradation and thereby enhances the inhibitory effect on NF-κB largely abrogated the transformed phenotypes of KRAS tumorigenic cells. Thus, oncogenic KRAS signals contributed to the tumorigenic phenotypes of endometrial cells by activating the transcription function of NF-κB. CONCLUSIONS These findings clearly show that NF-κB activation is a novel target of oncogenic KRAS in endometrial carcinogenesis, implying the potential utility of NF-κB inhibitors for endometrial cancer chemoprevention, especially with KRAS mutation.
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Affiliation(s)
- Yasunari Mizumoto
- Department of Obstetrics and Gynecology, Kanazawa University Graduate School of Medical Science, Kanazawa, Ishikawa, Japan
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Human papillomavirus-16 presence and physical status in lung carcinomas from Asia. Infect Agent Cancer 2010; 5:20. [PMID: 21080966 PMCID: PMC2994794 DOI: 10.1186/1750-9378-5-20] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 11/16/2010] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Although human papillomavirus (HPV) genome has been detected in lung cancer, its prevalence is highly variable around the world. Higher frequencies have been reported in far-east Asian countries, when compared with European countries. The present study analysed the HPV-16 presence in 60 lung carcinomas from the Asian countries China, Pakistan and Papua New Guinea. RESULTS HPV-16 was present in 8/59 (13%) samples. According to histological type, HPV-16 was detected in 8/18 (44%) squamous cell carcinomas (SQCs), which were mainly from Pakistan; 0/38 (0%) adenocarcinomas (ACs), which were mainly from China; and in 0/4 (0%) small cell carcinomas (SCLCs). The observed histological difference was statistically significant (p < 0.001). HPV-16 viral load was also determined using real-time polymerase chain reaction (qRT-PCR); it ranged between 411 to 2345 copies/100 ng of genomic DNA. HPV-16 genome was found integrated into the host genome in every HPV-16 positive carcinoma. CONCLUSION These results support the notion that HPV-16 infection is highly associated with SQCs in Pakistan. Our results show a frequent HPV-16 integration in SQCs, although the low viral load casts doubt respect a direct etiological role of HPV in lung carcinomas from Asia. Additional HPV-16 characterization is necessary to establish a direct or indirect etiological role of HPV in this malignancy.
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Mankame TP, Zhou G, Lingen MW. Identification and characterization of the human NOL7 gene promoter. Gene 2010; 456:36-44. [PMID: 20206243 PMCID: PMC3408873 DOI: 10.1016/j.gene.2010.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 01/29/2010] [Accepted: 02/16/2010] [Indexed: 11/24/2022]
Abstract
NOL7 is a candidate tumor suppressor gene that localizes to 6p23, a chromosomal region frequently associated with loss of heterozygosity in a number of malignancies including cervical cancer (CC). Re-expression of NOL7 in CC cells suppresses in vivo tumor growth by 95% and alters the angiogenic phenotype by modulating the expression of VEGF and TSP1. Here, we describe the determination of two NOL7 transcriptional start sites (TSS), the cloning of its regulatory promoter region, and the identification of transcription factors that regulate its expression. Using 5' Rapid amplification of complementary DNA ends (RACE), two transcriptional start sites were identified. Deletion analysis determined that the essential elements required for the optimal promoter activity of NOL7 were 560 bp upstream of its translation start site. In silico analysis suggested that the promoter region contained potential binding sites for the SP1, c-Myc and RXRalpha transcription factors as well as an overall GC content of greater than 60%. Chromatin immunoprecipitation (ChIP) confirmed that SP1, c-Myc and RXRalpha bound to the NOL7 promoter region. Finally, we demonstrate that NOL7 expression was positively regulated by c-Myc and RXRalpha. These results demonstrate that the NOL7 promoter region possesses each of the key elements of a TATA-less promoter. In addition, the positive regulation of NOL7 by c-Myc and RXRalpha provides additional mechanistic insights into the potential role of NOL7 in CC and other malignancies.
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Affiliation(s)
- Tanmayi P Mankame
- Department of Pathology, The University of Chicago, Chicago, IL 60637, USA
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Yugawa T, Narisawa-Saito M, Yoshimatsu Y, Haga K, Ohno SI, Egawa N, Fujita M, Kiyono T. DeltaNp63alpha repression of the Notch1 gene supports the proliferative capacity of normal human keratinocytes and cervical cancer cells. Cancer Res 2010; 70:4034-44. [PMID: 20442293 DOI: 10.1158/0008-5472.can-09-4063] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The p53 family member p63 is a master regulator of epithelial development. One of its isoforms, DeltaNp63alpha, is predominantly expressed in the basal cells of stratified epithelia and plays a fundamental role in control of regenerative potential and epithelial integrity. In contrast to p53, p63 is rarely mutated in human cancers, but it is frequently overexpressed in squamous cell carcinomas (SCC). However, its functional relevance to tumorigenesis remains largely unclear. We previously identified the Notch1 gene as a novel transcriptional target of p53. Here, we show that DeltaNp63alpha functions as a transcriptional repressor of the Notch1 gene through the p53-responsive element. Knockdown of p63 caused upregulation of Notch1 expression and marked reduction in proliferation and clonogenicity of both normal human keratinocytes and cervical cancer cell lines overexpressing DeltaNp63alpha. Concomitant silencing of Notch1 significantly rescued this phenotype, indicating the growth defect induced by p63 deficiency to be, at least in part, attributable to Notch1 function. Conversely, overexpression of DeltaNp63alpha decreased basal levels of Notch1, increased proliferative potential of normal human keratinocytes, and inhibited both p53-dependent and p53-independent induction of Notch1 and differentiation markers upon genotoxic stress and serum exposure, respectively. These results suggest that DeltaNp63alpha maintains the self-renewing capacity of normal human keratinocytes and cervical cancer cells partly through transcriptional repression of the Notch1 gene and imply a novel pathogenetical significance of frequently observed overexpression of DeltaNp63alpha together with p53 inactivation in SCCs.
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Affiliation(s)
- Takashi Yugawa
- Virology Division, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, Japan
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45
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May metaplastic breast carcinomas be actually basal-like carcinoma? Further evidence study with its ultrastructure and survival analysis. Med Oncol 2009; 28:42-50. [DOI: 10.1007/s12032-009-9399-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Accepted: 12/17/2009] [Indexed: 12/18/2022]
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46
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Gallouzi IE, Di Marco S. Tristetraprolin: a weapon against HPV-induced cervical cancer? Aging (Albany NY) 2009; 1:839-41. [PMID: 20157555 PMCID: PMC2815726 DOI: 10.18632/aging.100093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Accepted: 10/07/2009] [Indexed: 11/25/2022]
Affiliation(s)
- Imed-Eddine Gallouzi
- McGill University, Department of Biochemistry, Rosalind and Morris Goodman Cancer Center, Montreal, Quebec, Canada.
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47
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Abstract
Over the last two decades since discovery of human papillomavirus (HPV) type 16 and 18 DNAs in cervical cancers by Dr. Harald zur Hausen, HPVs have been well characterized as causative agents for cervical cancer. Viral DNA from a specific group of HPVs can be detected in at least 90% of all cervical cancers and two viral genes, E6 and E7, are invariably expressed in HPV-positive cervical cancer cells. Their gene products are known to inactivate the major tumor suppressors, p53 and pRB, respectively. In addition, one function of E6 is to activate telomerase, and E6 and E7 cooperate to effectively immortalize human primary epithelial cells. Though expression of E6 and E7 is itself not sufficient for cancer development, it seems to be either directly or indirectly involved in every stage of multi-step carcinogenesis. Indeed, it has been shown that only one or two genetic alterations in addition to expression of E6 and E7 are experimentally sufficient to confer tumorigenicity to normal human cervical keratinocytes. Epidemiological and biological studies suggest the potential efficacy of prophylactic vaccines to prevent genital HPV infection as an anti-cancer strategy. However, given the widespread nature of HPV infection and unresolved issues about the duration and type specificity of the currently available HPV vaccines, it is crucial that molecular details of the natural history of HPV infection as well as the biological activities of the viral oncoproteins be elucidated in order to provide the basis for development of new therapeutic strategies against HPV-associated malignancies. This review highlights the novel functions of E6 and E7 as well as the molecular mechanisms of HPV-induced carcinogenesis.
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48
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Yugawa T, Kiyono T. Molecular mechanisms of cervical carcinogenesis by high-risk human papillomaviruses: novel functions of E6 and E7 oncoproteins. Rev Med Virol 2009; 19:97-113. [PMID: 19156753 DOI: 10.1002/rmv.605] [Citation(s) in RCA: 155] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Over the last two decades, since the initial discovery of human papillomavirus (HPV) type 16 and 18 DNAs in cervical cancers by Dr. Harald zur Hausen (winner of the Nobel Prize in Physiology or Medicine, 2008), the HPVs have been well characterised as causative agents for cervical cancer. Viral DNA from a specific group of HPVs can be detected in at least 90% of all cervical cancers and two viral genes, E6 and E7, are invariably expressed in HPV-positive cervical cancer cells. Their gene products are known to inactivate the major tumour suppressors, p53 and retinoblastoma protein (pRB), respectively. In addition, one function of E6 is to activate telomerase, and E6 and E7 cooperate to effectively immortalise human primary epithelial cells. Though expression of E6 and E7 is itself not sufficient for cancer development, it seems to be either directly or indirectly involved in every stage of multi-step carcinogenesis. Epidemiological and biological studies suggest the potential efficacy of prophylactic vaccines to prevent genital HPV infection as an anti-cancer strategy. However, given the widespread nature of HPV infection and unresolved issues about the duration and type specificity of the currently available HPV vaccines, it is crucial that molecular details of the natural history of HPV infection as well as the biological activities of the viral oncoproteins be elucidated in order to provide the basis for development of new therapeutic strategies against HPV-associated malignancies. This review highlights novel functions of E6 and E7 as well as the molecular mechanisms of HPV-induced carcinogenesis.
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Affiliation(s)
- Takashi Yugawa
- Virology Division, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
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Amine A, Rivera S, Opolon P, Dekkal M, Biard DSF, Bouamar H, Louache F, McKay MJ, Bourhis J, Deutsch E, Vozenin-Brotons MC. Novel anti-metastatic action of cidofovir mediated by inhibition of E6/E7, CXCR4 and Rho/ROCK signaling in HPV tumor cells. PLoS One 2009; 4:e5018. [PMID: 19325708 PMCID: PMC2657827 DOI: 10.1371/journal.pone.0005018] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2008] [Accepted: 02/16/2009] [Indexed: 12/17/2022] Open
Abstract
Cervical cancer is frequently associated with HPV infection. The expression of E6 and E7 HPV oncoproteins is a key factor in its carcinogenicity and might also influence its virulence, including metastatic conversion. The cellular mechanisms involved in metastatic spread remain elusive, but pro-adhesive receptors and their ligands, such as SDF-1α and CXCR4 are implicated. In the present study, we assessed the possible relationship between SDF-1α/CXCR4 signaling, E6/E7 status and the metastatic process. We found that SDF-1α stimulated the invasion of E6/E7-positive cancer cell lines (HeLa and TC-1) in Matrigel though CXCR4 and subsequent Rho/ROCK activation. In pulmonary metastatic foci generated by TC-1 cells IV injection a high proportion of cells expressed membrane-associated CXCR4. In both cases models (in vitro and in vivo) cell adhesion and invasion was abrogated by CXCR4 immunological blockade supporting a contribution of SDF-1α/CXCR4 to the metastatic process. E6 and E7 silencing using stable knock-down and the approved anti-viral agent, Cidofovir decreased CXCR4 gene expression as well as both, constitutive and SDF-1α-induced cell invasion. In addition, Cidofovir inhibited lung metastasis (both adhesion and invasion) supporting contribution of E6 and E7 oncoproteins to the metastatic process. Finally, potential signals activated downstream SDF-1α/CXCR4 and involved in lung homing of E6/E7-expressing tumor cells were investigated. The contribution of the Rho/ROCK pathway was suggested by the inhibitory effect triggered by Cidofovir and further confirmed using Y-27632 (a small molecule ROCK inhibitor). These data suggest a novel and highly translatable therapeutic approach to cervix cancer, by inhibition of adhesion and invasion of circulating HPV-positive tumor cells, using Cidofovir and/or ROCK inhibition.
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Affiliation(s)
- Abdessamad Amine
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
| | - Sofia Rivera
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
| | - Paule Opolon
- UMR 8121 Laboratoire de vectorologie et transfert de gènes, Institut Gustave Roussy, Villejuif, France
| | - Mehdi Dekkal
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
| | - Denis S. F. Biard
- CEA-DSV-iRCM / INSERM U935. Institut A. Lwoff-CNRS, BP 8, Villejuif, France
| | - Hakim Bouamar
- INSERM U 790, Institut Gustave Roussy, Villejuif, France
| | - Fawzia Louache
- INSERM U 790, Institut Gustave Roussy, Villejuif, France
| | - Michael J. McKay
- Australian National University and The Canberra Hospital, Canberra, Australia
| | - Jean Bourhis
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
| | - Eric Deutsch
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
| | - Marie-Catherine Vozenin-Brotons
- Laboratoire UPRES EA 27-10 Radiosensibilité des tumeurs et tissus sains, Institut Gustave Roussy/Institut de Radioprotection et de Sureté Nucléaire, Villejuif, France
- * E-mail:
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Chung SH, Wiedmeyer K, Shai A, Korach KS, Lambert PF. Requirement for estrogen receptor alpha in a mouse model for human papillomavirus-associated cervical cancer. Cancer Res 2009; 68:9928-34. [PMID: 19047174 DOI: 10.1158/0008-5472.can-08-2051] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The majority of human cervical cancers are associated with the high-risk human papillomaviruses (HPV), which encode the potent E6 and E7 oncogenes. On prolonged treatment with physiologic levels of exogenous estrogen, K14E7 transgenic mice expressing HPV-16 E7 oncoprotein in their squamous epithelia succumb to uterine cervical cancer. Furthermore, prolonged withdrawal of exogenous estrogen results in complete or partial regression of tumors in this mouse model. In the current study, we investigated whether estrogen receptor alpha (ERalpha) is required for the development of cervical cancer in K14E7 transgenic mice. We show that exogenous estrogen fails to promote either dysplasia or cervical cancer in K14E7/ERalpha-/- mice despite the continued presence of the presumed cervical cancer precursor cell type, reserve cells, and evidence for E7 expression therein. We also observed that cervical cancers in our mouse models are strictly associated with atypical squamous metaplasia (ASM), which is believed to be the precursor for cervical cancer in women. Consistently, E7 and exogenous estrogen failed to promote ASM in the absence of ERalpha. We conclude that ERalpha plays a crucial role at an early stage of cervical carcinogenesis in this mouse model.
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Affiliation(s)
- Sang-Hyuk Chung
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53706, USA
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