1
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Xie Q, Tong C, Xiong X. An overview of the co-transcription factor NACC1: Beyond its pro-tumor effects. Life Sci 2024; 336:122314. [PMID: 38030057 DOI: 10.1016/j.lfs.2023.122314] [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: 09/05/2023] [Revised: 11/20/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
Nucleus accumbens-associated protein 1 (NACC1) is a member of the broad complex, tramtrack, bric-a-brac/poxvirus and zinc finger (BTB/POZ) protein families, mainly exerting its biological functions as a transcription co-regulator. NACC1 forms homo- or hetero-dimers through the BTB/POZ or BANP, E5R, and NACC1 (BEN) domain with other transcriptional regulators to regulate downstream signals. Recently, the overexpression of NACC1 has been observed in various tumors and is positively associated with tumor progression, high recurrence rate, indicating poor prognosis. NACC1 also regulates biological processes such as embryonic development, stem cell pluripotency, innate immunity, and related diseases. Our review combines recent research to summarize advancements in the structure, biological functions, and relative molecular mechanisms of NACC1. The future development of NACC1 clinical appliances is also discussed.
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Affiliation(s)
- Qing Xie
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China; School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China
| | - Chang Tong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China
| | - Xiangyang Xiong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China; Province Key Laboratory of Tumor Pathogens and Molecular Pathology, Nanchang University, Nanchang 330006, China.
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2
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da Silva-Buttkus P, Spielmann N, Klein-Rodewald T, Schütt C, Aguilar-Pimentel A, Amarie OV, Becker L, Calzada-Wack J, Garrett L, Gerlini R, Kraiger M, Leuchtenberger S, Östereicher MA, Rathkolb B, Sanz-Moreno A, Stöger C, Hölter SM, Seisenberger C, Marschall S, Fuchs H, Gailus-Durner V, Hrabě de Angelis M. Knockout mouse models as a resource for the study of rare diseases. Mamm Genome 2023; 34:244-261. [PMID: 37160609 PMCID: PMC10290595 DOI: 10.1007/s00335-023-09986-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 03/07/2023] [Indexed: 05/11/2023]
Abstract
Rare diseases (RDs) are a challenge for medicine due to their heterogeneous clinical manifestations and low prevalence. There is a lack of specific treatments and only a few hundred of the approximately 7,000 RDs have an approved regime. Rapid technological development in genome sequencing enables the mass identification of potential candidates that in their mutated form could trigger diseases but are often not confirmed to be causal. Knockout (KO) mouse models are essential to understand the causality of genes by allowing highly standardized research into the pathogenesis of diseases. The German Mouse Clinic (GMC) is one of the pioneers in mouse research and successfully uses (preclinical) data obtained from single-gene KO mutants for research into monogenic RDs. As part of the International Mouse Phenotyping Consortium (IMPC) and INFRAFRONTIER, the pan-European consortium for modeling human diseases, the GMC expands these preclinical data toward global collaborative approaches with researchers, clinicians, and patient groups.Here, we highlight proprietary genes that when deleted mimic clinical phenotypes associated with known RD targets (Nacc1, Bach2, Klotho alpha). We focus on recognized RD genes with no pre-existing KO mouse models (Kansl1l, Acsf3, Pcdhgb2, Rabgap1, Cox7a2) which highlight novel phenotypes capable of optimizing clinical diagnosis. In addition, we present genes with intriguing phenotypic data (Zdhhc5, Wsb2) that are not presently associated with known human RDs.This report provides comprehensive evidence for genes that when deleted cause differences in the KO mouse across multiple organs, providing a huge translational potential for further understanding monogenic RDs and their clinical spectrum. Genetic KO studies in mice are valuable to further explore the underlying physiological mechanisms and their overall therapeutic potential.
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Affiliation(s)
- Patricia da Silva-Buttkus
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Nadine Spielmann
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Tanja Klein-Rodewald
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Christine Schütt
- Institute of Experimental Genetics, Applied Computational Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Antonio Aguilar-Pimentel
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Oana V Amarie
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Lore Becker
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Julia Calzada-Wack
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Lillian Garrett
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Raffaele Gerlini
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Markus Kraiger
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Stefanie Leuchtenberger
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Manuela A Östereicher
- Institute of Experimental Genetics, Applied Computational Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Birgit Rathkolb
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
- German Center for Diabetes Research (DZD), Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, Ludwig-Maximilians-Universität München, Feodor-Lynen Strasse 25, 81377, Munich, Germany
| | - Adrián Sanz-Moreno
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Claudia Stöger
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Sabine M Hölter
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
- Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Claudia Seisenberger
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Susan Marschall
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Helmut Fuchs
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Valerie Gailus-Durner
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany
| | - Martin Hrabě de Angelis
- Institute of Experimental Genetics, German Mouse Clinic, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstrasse 1, Neuherberg, Germany.
- German Center for Diabetes Research (DZD), Ingolstaedter Landstrasse 1, 85764, Neuherberg, Germany.
- Chair of Experimental Genetics, TUM School of Life Sciences, Technische Universität München, Alte Akademie 8, 85354, Freising, Germany.
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Wen D, Hu M, Guo W, Wu J, Wu Y. Multi-SUMOylation of NAC1 is essential for the growth of prostate cancer cells. Biochem Biophys Res Commun 2023; 641:148-154. [PMID: 36527749 DOI: 10.1016/j.bbrc.2022.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 11/21/2022] [Accepted: 12/03/2022] [Indexed: 12/14/2022]
Abstract
Nucleus accumbens-associated 1 (NAC1) is a member of pox virus and zinc finger/bric-a-brac tramtrack broad complex (BTB/POZ) gene family. Overexpression of NAC1 is implicated in cancer development, recurrence and chemotherapy resistance. In our previous study, we found NAC1 was a potential small ubiquitin-like modifier (SUMO) substrate in prostate cancer cells. However, there was still lack of evidences to further support and validate the result. In this work, we found that NAC1 is a multi-SUMO-sites acceptor. The SUMO acceptor lysines were K167, K318, K368, K483 and K498. SUMOylation didn't alter the localization of NAC1, but facilitated the formation of NAC1 nuclear bodies. Compared with NAC1 wild type (NAC1 WT), the SUMO-sites mutant of NAC1 (NAC1 SM) suppressed cell proliferation and tumor growth in cellular and animal levels. This work uncovered the function of SUMOylation of NAC1 in prostate cancer cells.
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Affiliation(s)
- Donghua Wen
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China.
| | - Min Hu
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Wenzheng Guo
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Jingjing Wu
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Yingli Wu
- Hongqiao International Institute of Medicine, Shanghai Tongren Hospital / Faculty of Basic Medicine, Key Laboratory of Cell Differentiation and Apoptosis of the Chinese Ministry of Education, Chinese Academy of Medical Sciences Research Unit 2019RU043, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, 200025, China.
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4
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Cao Z, Chen H, Mei X, Li X. Silencing of NACC1 inhibits the proliferation, migration and invasion of nasopharyngeal carcinoma cells via regulating the AKT/mTOR signaling pathway. Oncol Lett 2021; 22:828. [PMID: 34691255 PMCID: PMC8527823 DOI: 10.3892/ol.2021.13088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/11/2021] [Indexed: 12/30/2022] Open
Abstract
Nucleus accumbens-associated protein 1 (NACC1) has been reported to serve as an oncogenic role in several types of cancer; however, its role in nasopharyngeal carcinoma (NPC) remains to be determined. The present study aimed to investigate the role of NACC1 in NPC and elucidate the underlying mechanisms. Therefore, NACC1 expression in the normal nasopharyngeal epithelial cell line, NP69, and various NPC cell lines was determined by reverse transcription-quantitative PCR and western blot analyses. NACC1 expression was silenced in the NPC SUNE-1 cell line by transfection with a short hairpin RNA. Cell viability, proliferation, migration, invasion and epithelial-mesenchymal transition (EMT) were then evaluated using MTT, colony formation, wound healing, Transwell and western blot assays, respectively. SC79 was employed to activate AKT expression in NACC1-silenced SUNE-1 cells, and the aforementioned cellular processes were observed. The results revealed that NACC1 expression was upregulated in NPC cell lines. NACC1-knocdown inhibited SUNE-1 cell proliferation, migration, invasion and EMT. Moreover, the levels of phosphorylated AKT and mTOR were decreased upon NACC1 silencing. Mechanistically, the presence of SC79 significantly blocked all the effects of NACC1-knockdown on SUNE-1 cells. The findings of the present study demonstrated that NACC1-knockdown effectively suppressed NPC cell proliferation, migration and invasion by inhibiting the activation of the AKT/mTOR signaling pathway. NACC1 may thus serve as a potential target for the diagnosis and therapy of NPC.
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Affiliation(s)
- Zhengyong Cao
- Department of Otolaryngology, Chongqing Qijiang District People's Hospital, Chongqing 401420, P.R. China
| | - Hong Chen
- Department of Nephrology, Chongqing Qijiang District People's Hospital, Chongqing 401420, P.R. China
| | - Xiaoli Mei
- Department of Science and Education, Chongqing Qijiang District People's Hospital, Chongqing 401420, P.R. China
| | - Xiaobo Li
- Department of Otolaryngology, Chongqing Qijiang District People's Hospital, Chongqing 401420, P.R. China
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5
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Zhang H, Zhang R, Zhang G, Liu W, Ma Z, Yue C, Yang M. Clinical significance of miR-1298 in cervical cancer and its biological function in vitro. Oncol Lett 2021; 21:401. [PMID: 33777224 PMCID: PMC7988695 DOI: 10.3892/ol.2021.12662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 02/23/2021] [Indexed: 12/23/2022] Open
Abstract
Cervical cancer is one of the most malignant tumors in women. miR-1298 was reported to be abnormally expressed and serve crucial role in tumorigenesis of several types of cancer; however, the role of miR-1298 in cervical cancer remains unknown. The present study aimed to evaluate the clinical and biological significance of miR-1298 in cervical cancer. To do so, the expression level of miR-1298 in cervical cancer tissues and cells was evaluated by reverse transcription quantitative PCR. Kaplan-Meier survival analysis and Cox regression analysis were used to explore the prognostic significance of miR-1298 in patients with cervical cancer. Cell Counting Kit-8 and Transwell migration and invasion assays were used to evaluate the effect of miR-1298 on the proliferative, migratory and invasive abilities of cervical cancer cells, respectively. The expression of miR-1298 was lower in cancer tissues and cells compared with normal tissues and cells. Furthermore, miR-1298 expression was associated with lymph node metastasis, tumor diameter and staging from the International Federation of Gynecology and Obstetrics. In addition, patients with low miR-1298 expression had poorer overall survival. These findings suggested that miR-1298 may be considered as an independent prognostic factor for patients with cervical cancer. Furthermore, the results demonstrated that miR-1298 knockdown could promote tumor cell proliferation and migratory and invasive abilities. In addition, nucleus accumbens-associated 1 (NACC1) was demonstrated to be a direct target of miR-1298. Taken together, these findings indicated that miR-1298 overexpression may be considered as a prognostic biomarker for cervical cancer and that miR-1298 may play an inhibitor role in cervical cancer by targeting NACC1.
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Affiliation(s)
- Haitao Zhang
- Department of Pathology, Chengwu People's Hospital, Heze, Shandong 274200, P.R. China
| | - Ruihong Zhang
- Department of Obstetrics, Chengwu People's Hospital, Heze, Shandong 274200, P.R. China
| | - Guiling Zhang
- Department of Pathology, Chengwu People's Hospital, Heze, Shandong 274200, P.R. China
| | - Wenjuan Liu
- Department of Pathology, Chengwu People's Hospital, Heze, Shandong 274200, P.R. China
| | - Zhaoyuan Ma
- Department of Pathology, Linyi Hot Spring Sanatorium of Shandong Coal Industry Bureau, Linyi, Shandong 276032, P.R. China
| | - Caiyun Yue
- Department of Pathology, Chengwu People's Hospital, Heze, Shandong 274200, P.R. China
| | - Min Yang
- Department of Pathology, The First Affiliated Hospital of Shandong First Medical University, Jinan, Shandong 250014, P.R. China
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6
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Nucleus Accumbens-Associated Protein 1 Binds DNA Directly through the BEN Domain in a Sequence-Specific Manner. Biomedicines 2020; 8:biomedicines8120608. [PMID: 33327466 PMCID: PMC7764960 DOI: 10.3390/biomedicines8120608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/10/2020] [Accepted: 12/10/2020] [Indexed: 01/03/2023] Open
Abstract
Nucleus accumbens-associated protein 1 (NAC1) is a nuclear protein that harbors an amino-terminal BTB domain and a carboxyl-terminal BEN domain. NAC1 appears to play significant and diverse functions in cancer and stem cell biology. Here we demonstrated that the BEN domain of NAC1 is a sequence-specific DNA-binding domain. We selected the palindromic 6 bp motif ACATGT as a target sequence by using a PCR-assisted random oligonucleotide selection approach. The interaction between NAC1 and target DNA was characterized by gel shift assays, pull-down assays, isothermal titration calorimetry (ITC), chromatin-immunoprecipitation assays, and NMR chemical shifts perturbation (CSP). The solution NMR structure revealed that the BEN domain of human NAC-1 is composed of five conserved α helices and two short β sheets, with an additional hitherto unknown N-terminal α helix. In particular, ITC clarified that there are two sequential events in the titration of the BEN domain of NAC1 into the target DNA. The ITC results were further supported by CSP data and structure analyses. Furthermore, live cell photobleaching analyses revealed that the BEN domain of NAC1 alone was unable to interact with chromatin/other proteins in cells.
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7
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Li L, Yu H, Ren Q. MiR-218-5p Suppresses the Progression of Retinoblastoma Through Targeting NACC1 and Inhibiting the AKT/mTOR Signaling Pathway. Cancer Manag Res 2020; 12:6959-6967. [PMID: 32821163 PMCID: PMC7418178 DOI: 10.2147/cmar.s246142] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 06/17/2020] [Indexed: 12/23/2022] Open
Abstract
Introduction MicroRNA-218-5p (miR-218-5p) was involved in the progression of multiple tumors as a tumor suppressor miRNA. Its specific role on human retinoblastoma (RB) cells remains unknown. Methods We constructed the miR-218-5p overexpression and knockdown cells to detect their role on RB cell line WERI-Rb-1, and we analyzed its binding sites on TargetScan. CCK8 and clonogenic assays were performed to detect cell viability. Flow cytometry was used for the detection of cell apoptosis. Results Our results showed that the miR-218-5p inhibitor enhanced cell viability and blocked the apoptosis in RB cells. The AKT/mTOR signaling pathway was also inhibited by the miR-218-5p inhibitor. MiR-218-5p mimics lead to diametrically opposite results. Nucleus accumbens-associated 1 (NAC1) encoded by the NACC1 gene is involved in the regulation of many biological functions, including gene transcription, protein degradation of ubiquitin pathway, cell viability, and apoptosis. In this research, dataset analysis suggested that NACC1 might be a downstream target of miR-218-5p. Then, qPCR and Western blot analysis proved that miR-218-5p inhibited the expression of NACC1 in RB cells. NACC1 could promote cell viability and inhibit the apoptosis by activating the AKT/mTOR signaling pathway. MiR-218-5p mimics blocked the enhancement of cell growth induced by NACC1 overexpression as well as the activation of the AKT/mTOR signaling pathway in RB cells. Discussion MiR-218-5p inhibited cell growth by targeting NACC1 and suppressing the AKT/mTOR signaling pathway. MiR-218-5p/NACC1/AKT/mTOR might be a new target axis for the clinical treatment strategy.
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Affiliation(s)
- Li Li
- Department of Ophthalmology, The First Hospital of Shijiazhuang, Shijiazhuang, Hebei, People's Republic of China
| | - Hua Yu
- Department of Ophthalmology, The First Hospital of Shijiazhuang, Shijiazhuang, Hebei, People's Republic of China
| | - Qian Ren
- Department of Ophthalmology, The First Hospital of Shijiazhuang, Shijiazhuang, Hebei, People's Republic of China
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8
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Choi H, Park HJ, Kim H, Kim J, Lee YK, Kim J. Nac1 facilitates pluripotency gene activation for establishing somatic cell reprogramming. Biochem Biophys Res Commun 2019; 518:253-258. [PMID: 31412978 DOI: 10.1016/j.bbrc.2019.08.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 08/08/2019] [Indexed: 01/07/2023]
Abstract
Transcription factors play a central role in pluripotency transcription circuitry for establishing pluripotent reprogramming. Master transcription factors Oct4, Nanog, and Sox2 are known to form the core of the pluripotency transcription network. Other transcription factors also play critical roles for further refining the core circuitry for pluripotency in induced pluripotent stem (iPS) cells. Here, we reported that Nac1 interacted with the master pluripotent factors Oct4 and Nanog co-occupies gene promoters bound by these transcriptional factors for establishing pluripotency. Moreover, this interaction coordinates gene expression with H3K4me3 in the somatic cell reprogramming. Knockdown of Nac1 suppressed somatic cell reprogramming, whereas overexpression of Nac1 resulted in enhanced efficiency of induced pluripotent cell generation. Altogether, these results reveal the genome wide role for Nac1 in the contribution to the pluripotency circuitry and the regulation of the establishing pluripotent state.
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Affiliation(s)
- Hwan Choi
- Laboratory of Stem Cells & Cell reprogramming, Department of Biomedical Engineering, Dongguk University, Seoul, 100-715, Republic of Korea
| | - Hyeok Ju Park
- Database Laboratory, Department of Computer Science and Engineering, Dongguk University, Pildong-ro 1-gil 30, Jung-gu, Seoul, 04620, Republic of Korea
| | - Hongwon Kim
- Laboratory of Stem Cells & Cell reprogramming, Department of Biomedical Engineering, Dongguk University, Seoul, 100-715, Republic of Korea
| | - Junyeop Kim
- Laboratory of Stem Cells & Cell reprogramming, Department of Biomedical Engineering, Dongguk University, Seoul, 100-715, Republic of Korea
| | - Yong Kyu Lee
- Database Laboratory, Department of Computer Science and Engineering, Dongguk University, Pildong-ro 1-gil 30, Jung-gu, Seoul, 04620, Republic of Korea
| | - Jongpil Kim
- Laboratory of Stem Cells & Cell reprogramming, Department of Biomedical Engineering, Dongguk University, Seoul, 100-715, Republic of Korea; Department of Chemistry, Dongguk University, Seoul, 100-715, Republic of Korea.
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9
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Nakayama N, Sakashita G, Nariai Y, Kato H, Sinmyozu K, Nakayama JI, Kyo S, Urano T, Nakayama K. Cancer-related transcription regulator protein NAC1 forms a protein complex with CARM1 for ovarian cancer progression. Oncotarget 2018; 9:28408-28420. [PMID: 29983869 PMCID: PMC6033357 DOI: 10.18632/oncotarget.25400] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/16/2018] [Indexed: 01/07/2023] Open
Abstract
NAC1 is a cancer-related transcription regulator protein that is overexpressed in various carcinomas, including ovarian, cervical, breast, and pancreatic carcinomas. NAC1 knock-down was previously shown to result in the apoptosis of ovarian cancer cell lines and to rescue their sensitivity to chemotherapy, suggesting that NAC1 may be a potential therapeutic target, but protein complex formation of intranuclear NAC1 in ovarian cancer cells remain poorly understood. In this study, analysis of ovarian cancer cell lysates by fast protein liquid chromatography on a sizing column showed that the NAC1 peak corresponded to an apparent molecular mass of 300–500 kDa, which is larger than the estimated molecular mass (58 kDa) of the protein. Liquid chromatography-tandem mass spectrometry analysis identified CARM1 as interacting with NAC1 in the protein complex. Furthermore, tissue microarray analysis revealed a significant correlation between CARM1 and NAC1 expression levels. Ovarian cancer patients expressing high levels of NAC1 and CARM1 exhibited poor prognosis after adjuvant chemotherapy. Collectively, our results demonstrate that high expression levels of NAC1 and its novel binding partner CARM1 may serve as an informative prognostic biomarker for predicting resistance to chemotherapy for ovarian cancer.
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Affiliation(s)
- Naomi Nakayama
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Gyosuke Sakashita
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Yuko Nariai
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Hiroaki Kato
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Kaori Sinmyozu
- Proteomics Support Unit, RIKEN Center for Developmental Biology, Kobe, Japan.,Current address: National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Jun-Ichi Nakayama
- Graduate School of Natural Sciences, Nagoya City University, Nagoya, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Japan
| | - Takeshi Urano
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Japan
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Ruan Y, He J, Wu W, He P, Tian Y, Xiao L, Liu G, Wang J, Cheng Y, Zhang S, Yang Y, Xiong J, Zhao K, Wan Y, Huang H, Zhang J, Jian R. Nac1 promotes self-renewal of embryonic stem cells through direct transcriptional regulation of c-Myc. Oncotarget 2018; 8:47607-47618. [PMID: 28548937 PMCID: PMC5564591 DOI: 10.18632/oncotarget.17744] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/27/2017] [Indexed: 01/11/2023] Open
Abstract
The pluripotency transcriptional network in embryonic stem cells (ESCs) is composed of distinct functional units including the core and Myc units. It is hoped that dissection of the cellular functions and interconnections of network factors will aid our understanding of ESC and cancer biology. Proteomic and genomic approaches have identified Nac1 as a member of the core pluripotency network. However, previous studies have predominantly focused on the role of Nac1 in psychomotor stimulant response and cancer pathogenesis. In this study, we report that Nac1 is a self-renewal promoting factor, but is not required for maintaining pluripotency of ESCs. Loss of function of Nac1 in ESCs results in a reduced proliferation rate and an enhanced differentiation propensity. Nac1 overexpression promotes ESC proliferation and delays ESC differentiation in the absence of leukemia inhibitory factor (LIF). Furthermore, we demonstrated that Nac1 directly binds to the c-Myc promoter and regulates c-Myc transcription. The study also revealed that the function of Nac1 in promoting ESC self-renewal appears to be partially mediated by c-Myc. These findings establish a functional link between the core and c-Myc-centered networks and provide new insights into mechanisms of stemness regulation in ESCs and cancer.
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Affiliation(s)
- Yan Ruan
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China.,Biomedical Analysis Center, Third Military Medical University, Chongqing 400038, China
| | - Jianrong He
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China.,Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Wei Wu
- Department of Cardiothoracic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Ping He
- Department of Cardiothoracic Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Yanping Tian
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Lan Xiao
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Gaoke Liu
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Jiali Wang
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Yuda Cheng
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Shuo Zhang
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Yi Yang
- Experimental Center of Basic Medicine, College of Basic Medical Sciences, Third Military Medical University, Chongqing 400038, China
| | - Jiaxiang Xiong
- Experimental Center of Basic Medicine, College of Basic Medical Sciences, Third Military Medical University, Chongqing 400038, China
| | - Ke Zhao
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Ying Wan
- Biomedical Analysis Center, Third Military Medical University, Chongqing 400038, China
| | - He Huang
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Junlei Zhang
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
| | - Rui Jian
- Laboratory of Stem Cell and Developmental Biology, Department of Histology and Embryology, Third Military Medical University, Chongqing 400038, China
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11
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Schoch K, Meng L, Szelinger S, Bearden DR, Stray-Pedersen A, Busk OL, Stong N, Liston E, Cohn RD, Scaglia F, Rosenfeld JA, Tarpinian J, Skraban CM, Deardorff MA, Friedman JN, Akdemir ZC, Walley N, Mikati MA, Kranz PG, Jasien J, McConkie-Rosell A, McDonald M, Wechsler SB, Freemark M, Kansagra S, Freedman S, Bali D, Millan F, Bale S, Nelson SF, Lee H, Dorrani N, Goldstein DB, Xiao R, Yang Y, Posey JE, Martinez-Agosto JA, Lupski JR, Wangler MF, Shashi V. A Recurrent De Novo Variant in NACC1 Causes a Syndrome Characterized by Infantile Epilepsy, Cataracts, and Profound Developmental Delay. Am J Hum Genet 2017; 100:343-351. [PMID: 28132692 PMCID: PMC5294886 DOI: 10.1016/j.ajhg.2016.12.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 12/22/2016] [Indexed: 02/08/2023] Open
Abstract
Whole-exome sequencing (WES) has increasingly enabled new pathogenic gene variant identification for undiagnosed neurodevelopmental disorders and provided insights into both gene function and disease biology. Here, we describe seven children with a neurodevelopmental disorder characterized by microcephaly, profound developmental delays and/or intellectual disability, cataracts, severe epilepsy including infantile spasms, irritability, failure to thrive, and stereotypic hand movements. Brain imaging in these individuals reveals delay in myelination and cerebral atrophy. We observe an identical recurrent de novo heterozygous c.892C>T (p.Arg298Trp) variant in the nucleus accumbens associated 1 (NACC1) gene in seven affected individuals. One of the seven individuals is mosaic for this variant. NACC1 encodes a transcriptional repressor implicated in gene expression and has not previously been associated with germline disorders. The probability of finding the same missense NACC1 variant by chance in 7 out of 17,228 individuals who underwent WES for diagnoses of neurodevelopmental phenotypes is extremely small and achieves genome-wide significance (p = 1.25 × 10-14). Selective constraint against missense variants in NACC1 makes this excess of an identical missense variant in all seven individuals more remarkable. Our findings are consistent with a germline recurrent mutational hotspot associated with an allele-specific neurodevelopmental phenotype in NACC1.
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Affiliation(s)
- Kelly Schoch
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Linyan Meng
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics, Houston, TX 77021, USA
| | - Szabolcs Szelinger
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David R Bearden
- Division of Child Neurology, Department of Neurology, University of Rochester School of Medicine, Rochester, NY 14627, USA
| | - Asbjorg Stray-Pedersen
- Baylor-Hopkins Center for Mendelian Genomics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Norwegian National Unit for Newborn Screening, Oslo University Hospital, 0424 Oslo, Norway
| | - Oyvind L Busk
- Section of Medical Genetics, Department of Laboratory Medicine, Telemark Hospital, 3710 Skien, Norway
| | - Nicholas Stong
- Institute for Genomic Medicine, Columbia University, New York, NY 10032, USA
| | - Eriskay Liston
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Ronald D Cohn
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Department of Pediatrics, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Fernando Scaglia
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jennifer Tarpinian
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Cara M Skraban
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Roberts Individualized Medical Genetics Center, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Matthew A Deardorff
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Roberts Individualized Medical Genetics Center, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Department of Pediatrics, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jeremy N Friedman
- Department of Pediatrics, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Zeynep Coban Akdemir
- Norwegian National Unit for Newborn Screening, Oslo University Hospital, 0424 Oslo, Norway
| | - Nicole Walley
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Mohamad A Mikati
- Division of Pediatric Neurology, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Peter G Kranz
- Division of Neuroradiology, Department of Radiology, Duke Health, Durham, NC 27710, USA
| | - Joan Jasien
- Division of Pediatric Neurology, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Allyn McConkie-Rosell
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Marie McDonald
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Stephanie Burns Wechsler
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA; Division of Cardiology, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Michael Freemark
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | - Sujay Kansagra
- Division of Pediatric Neurology, Department of Pediatrics, Duke Health, Durham, NC 27710, USA
| | | | - Deeksha Bali
- Department of Pathology, Duke Health, Durham, NC 27710, USA
| | | | | | - Stanley F Nelson
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hane Lee
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Clinical Genomics Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Naghmeh Dorrani
- Clinical Genomics Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - David B Goldstein
- Institute for Genomic Medicine, Columbia University, New York, NY 10032, USA
| | - Rui Xiao
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics, Houston, TX 77021, USA
| | - Yaping Yang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor Genetics, Houston, TX 77021, USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor-Hopkins Center for Mendelian Genomics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Julian A Martinez-Agosto
- Clinical Genomics Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor-Hopkins Center for Mendelian Genomics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA; Texas Children's Hospital, Houston, TX 77030, USA
| | - Michael F Wangler
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Baylor-Hopkins Center for Mendelian Genomics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Neurological Research Institute, Texas Children's Hospital, Houston, TX 77030, USA.
| | - Vandana Shashi
- Division of Medical Genetics, Department of Pediatrics, Duke Health, Durham, NC 27710, USA.
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12
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Nakayama N, Kato H, Sakashita G, Nariai Y, Nakayama K, Kyo S, Urano T. Protein complex formation and intranuclear dynamics of NAC1 in cancer cells. Arch Biochem Biophys 2016; 606:10-5. [PMID: 27424155 DOI: 10.1016/j.abb.2016.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/01/2016] [Accepted: 07/11/2016] [Indexed: 10/21/2022]
Abstract
Nucleus accumbens-associated protein 1 (NAC1) is a cancer-related transcription regulator protein that is also involved in the pluripotency and differentiation of embryonic stem cells. NAC1 is overexpressed in various carcinomas including ovarian, cervical, breast, and pancreatic carcinomas. NAC1 knock-down was previously shown to result in the apoptosis of ovarian cancer cell lines and to rescue their sensitivity to chemotherapy, suggesting that NAC1 may be a potential therapeutic target, but protein complex formation and the dynamics of intranuclear NAC1 in cancer cells remain poorly understood. In this study, analysis of HeLa cell lysates by fast protein liquid chromatography (FPLC) on a sizing column showed that the NAC1 peak corresponded to an apparent molecular mass of 300-500 kDa, which is larger than the estimated molecular mass (58 kDa) of the protein. Furthermore, live cell photobleaching analyses with green fluorescent protein (GFP)-fused NAC1 proteins revealed the intranuclear dynamics of NAC1. Collectively our results demonstrate that NAC1 forms a protein complex to function as a transcriptional regulator in cancer cells.
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Affiliation(s)
- Naomi Nakayama
- Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Hiroaki Kato
- Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Gyosuke Sakashita
- Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Yuko Nariai
- Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo 693-8501, Japan
| | - Takeshi Urano
- Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan.
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13
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Tatemichi Y, Shibazaki M, Yasuhira S, Kasai S, Tada H, Oikawa H, Suzuki Y, Takikawa Y, Masuda T, Maesawa C. Nucleus accumbens associated 1 is recruited within the promyelocytic leukemia nuclear body through SUMO modification. Cancer Sci 2015; 106:848-56. [PMID: 25891951 PMCID: PMC4520636 DOI: 10.1111/cas.12680] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/31/2015] [Accepted: 04/14/2015] [Indexed: 01/25/2023] Open
Abstract
Nucleus accumbens associated 1 (NACC1) is a cancer-associated BTB/POZ (pox virus and zinc finger/bric-a-brac tramtrack broad complex) gene, and is involved in several cellular functions in neurons, cancer and stem cells. Some of the BTB/POZ proteins associated with cancer biology are SUMOylated, which appears to play an important role in transcription regulation. We show that NACC1 is SUMOylated on a phylogenetically conserved lysine (K167) out of three consensus SUMOylation motif sites. Amino acid substitution in the SIM sequence (SIM/M) within the BTB/POZ domain partially reduced K167 SUMOylation activity of NACC1. Overexpression of GFP-NACC1 fusion protein leads to formation of discrete nuclear foci similar to promyelocytic leukemia nuclear bodies (PML-NB), which colocalized with SUMO paralogues (SUMO1/2/3). Both NACC1 nuclear body formation and colocalization with SUMO paralogues were completely suppressed in the GFP-NACC1-SIM/M mutant, whereas they were partially maintained in the NACC1 K167R mutant. Confocal immunofluorescence analysis showed that endogenous and exogenous NACC1 proteins colocalized with endogenous PML protein. A pull-down assay revealed that the consensus motifs of the SUMO acceptor site at K167 and the SIM within the BTB/POZ domain were both necessary for efficient binding to PML protein. Our study demonstrates that NACC1 can be modified by SUMO paralogues, and cooperates with PML protein.
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Affiliation(s)
- Yoshinori Tatemichi
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan.,Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Masahiko Shibazaki
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan
| | - Shinji Yasuhira
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan
| | - Shuya Kasai
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan
| | - Hiroshi Tada
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan
| | - Hiroki Oikawa
- Department of Pathology, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Yuji Suzuki
- Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Yasuhiro Takikawa
- Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Tomoyuki Masuda
- Department of Pathology, School of Medicine, Iwate Medical University, Morioka, Japan
| | - Chihaya Maesawa
- Department of Tumor Biology, Institute of Biomedical Sciences, Iwate Medical University, Yahaba-cho, Japan
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14
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Loss of NAC1 expression is associated with defective bony patterning in the murine vertebral axis. PLoS One 2013; 8:e69099. [PMID: 23922682 PMCID: PMC3724875 DOI: 10.1371/journal.pone.0069099] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 06/06/2013] [Indexed: 11/19/2022] Open
Abstract
NAC1 encoded by NACC1 is a member of the BTB/POZ family of proteins and participates in several pathobiological processes. However, its function during tissue development has not been elucidated. In this study, we compared homozygous null mutant Nacc1-/- and wild type Nacc1+/+ mice to determine the consequences of diminished NAC1 expression. The most remarkable change in Nacc1-/- mice was a vertebral patterning defect in which most knockout animals exhibited a morphological transformation of the sixth lumbar vertebra (L6) into a sacral identity; thus, the total number of pre-sacral vertebrae was decreased by one (to 25) in Nacc1-/- mice. Heterozygous Nacc1+/- mice had an increased tendency to adopt an intermediate phenotype in which L6 underwent partial sacralization. Nacc1-/- mice also exhibited non-closure of the dorsal aspects of thoracic vertebrae T10-T12. Chondrocytes from Nacc1+/+ mice expressed abundant NAC1 while Nacc1-/- chondrocytes had undetectable levels. Loss of NAC1 in Nacc1-/- mice was associated with significantly reduced chondrocyte migratory potential as well as decreased expression of matrilin-3 and matrilin-4, two cartilage-associated extracellular matrix proteins with roles in the development and homeostasis of cartilage and bone. These data suggest that NAC1 participates in the motility and differentiation of developing chondrocytes and cartilaginous tissues, and its expression is necessary to maintain normal axial patterning of murine skeleton.
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15
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Wang X, Gong Y, Zheng M, Xie Q, Tang H, Wang D, Chen X. Early changes in GMRP1 after intracerebral hemorrhage: involvement in brain damage and cell apoptosis. ACTA NEUROCHIRURGICA. SUPPLEMENT 2013; 118:163-7. [PMID: 23564125 DOI: 10.1007/978-3-7091-1434-6_30] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Glucose metabolism-related protein 1 (GMRP1), also known as BTBD10, has been reported to inhibit apoptosis of neuronal and islet beta cells via the Akt pathway. The present study attempted to investigate whether GMRP1 and its mediated Akt pathway were involved in brain injury of rats after intracerebral hemorrhage (ICH). Rat models of ICH had been established successfully. Western blotting was used to investigate the levels of GMRP1 protein in the caudate nuclei tissues of the hemorrhagic and contralateral sides at 6 h, day 1, day 3, day 5, and day 7 after ICH. Phosphorylations of Akt was determined in caudate nuclei mentioned above. TUNEL assay was used to measure the cell apoptosis. GMRP1 protein levels, as well as phosphorylations of Akt, significantly decreased in caudate nuclei of the hemorrhagic side, compared with those of the contralateral side on day 1 and day 3 after ICH. Enhanced cell apoptosis was observed on the hemorrhagic side using TUNEL assay. We presented here evidence that a decreased GMRP1-mediated Akt pathway contributed to cell apoptosis on the hemorrhagic side, suggesting that GMRP1 plays an important role in brain damage after ICH.
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Affiliation(s)
- Xuanchun Wang
- Department of Endocrinology, Huashan Hospital, Fudan University, Shanghai, China
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16
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Nishi T, Maruyama R, Urano T, Nakayama N, Kawabata Y, Yano S, Yoshida M, Nakayama K, Miyazaki K, Takenaga K, Tanaka T, Tajima Y. Low expression of nucleus accumbens-associated protein 1 predicts poor prognosis for patients with pancreatic ductal adenocarcinoma. Pathol Int 2012; 62:802-10. [DOI: 10.1111/pin.12020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 11/19/2012] [Indexed: 01/02/2023]
Affiliation(s)
- Takeshi Nishi
- Department of Digestive and General Surgery; Shimane University Faculty of Medicine; Izumo; Japan
| | - Riruke Maruyama
- Department of Organ Pathology; Shimane University Faculty of Medicine; Izumo; Japan
| | - Takeshi Urano
- Department of Biochemistry; Shimane University Faculty of Medicine; Izumo; Japan
| | - Naomi Nakayama
- Department of Biochemistry; Shimane University Faculty of Medicine; Izumo; Japan
| | - Yasunari Kawabata
- Department of Digestive and General Surgery; Shimane University Faculty of Medicine; Izumo; Japan
| | - Seiji Yano
- Department of Digestive and General Surgery; Shimane University Faculty of Medicine; Izumo; Japan
| | - Manabu Yoshida
- Department of Pathology; Matsue Municipal Hospital; Matsue; Japan
| | - Kentaro Nakayama
- Department of Obstetrics and Gynecology; Shimane University Faculty of Medicine; Izumo; Japan
| | - Kohji Miyazaki
- Department of Obstetrics and Gynecology; Shimane University Faculty of Medicine; Izumo; Japan
| | - Keizo Takenaga
- Life Science Laboratory of Tumor Biology; Shimane University Faculty of Medicine; Izumo; Japan
| | - Tsuneo Tanaka
- Department of Surgery; Ootagawa Hospital; Hiroshima; Japan
| | - Yoshitsugu Tajima
- Department of Digestive and General Surgery; Shimane University Faculty of Medicine; Izumo; Japan
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17
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Yap KL, Fraley SI, Thiaville MM, Jinawath N, Nakayama K, Wang J, Wang TL, Wirtz D, Shih IM. NAC1 is an actin-binding protein that is essential for effective cytokinesis in cancer cells. Cancer Res 2012; 72:4085-96. [PMID: 22761335 DOI: 10.1158/0008-5472.can-12-0302] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
NAC1 is a transcriptional corepressor protein that is essential to sustain cancer cell proliferation and migration. However, the underlying molecular mechanisms of NAC1 function in cancer cells remain unknown. In this study, we show that NAC1 functions as an actin monomer-binding protein. The conserved BTB protein interaction domain in NAC1 is the minimal region for actin binding. Disrupting NAC1 complex function by dominant-negative or siRNA strategies reduced cell retraction and abscission during late-stage cytokinesis, causing multinucleation in cancer cells. In Nac1-deficient murine fibroblasts, restoring NAC1 expression was sufficient to partially avert multinucleation. We found that siRNA-mediated silencing of the actin-binding protein profilin-1 in cancer cells caused a similar multinucleation phenotype and that NAC1 modulated the binding of actin to profillin-1. Taken together, our results indicate that the NAC1/actin/profilin-1 complex is crucial for cancer cell cytokinesis, with a variety of important biologic and clinical implications.
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Affiliation(s)
- Kai Lee Yap
- Department of Pathology, Pathobiology Graduate Program, Oncology Center, Johns Hopkins University, Baltimore, Maryland 21231, USA
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18
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CIBZ, a novel BTB domain-containing protein, is involved in mouse spinal cord injury via mitochondrial pathway independent of p53 gene. PLoS One 2012; 7:e33156. [PMID: 22427977 PMCID: PMC3299754 DOI: 10.1371/journal.pone.0033156] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 02/10/2012] [Indexed: 12/22/2022] Open
Abstract
Spinal cord injury (SCI) induces both primary uncontrollable mechanical injury and secondary controllable degeneration, which further results in the activation of cell death cascades that mediate delayed tissue damage. To alleviate its impairments and seek for an effective remedy, mRNA differential display was used to investigate gene mRNA expression profiling in mice following SCI. A specific Zinc finger and BTB domain-containing protein, CIBZ, was discovered to implicate in the SCI process for the first time. Further researches indicated that CIBZ was extensively distributed in various tissues, and the expression level was highest in muscle, followed by spinal cord, large intestine, kidney, spleen, thymus, lung, cerebrum, stomach, ovary and heart, respectively. After injury, the CIBZ expression decreased dramatically and reached the lowest level at 8 h, but it gradually increased to the maximal level at 7 d. Caspase-3 and C-terminal-binding protein (CtBP), two CIBZ-related proteins, showed similar tendency. Interestingly, p53 expression remained constant in all groups. Via flow cytometry (FCM) analysis, it was found that the cell death rate in SCI group markedly increased and reached the highest value 1 d after surgery and the mitochondrial transmembrane potential (ΔΨm) at 1 d was the lowest in all groups. Taken together, it is suggested that: (i) in the presence of CtBP, CIBZ gene is involved in secondary injury process and trigger the activation of apoptotic caspase-3 and bax genes independent of p53; (ii) abrupt down-regulation of CtBP at 8 h is a sign of mitochondria dysfunction and the onset of cell death; (iii) it could be used as an inhibitor or target drug of caspase-3 gene to improve spinal cord function.
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19
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Qu H, Qu D, Chen F, Zhang Z, Liu B, Liu H. ZBTB7 overexpression contributes to malignancy in breast cancer. Cancer Invest 2010; 28:672-8. [PMID: 20394500 DOI: 10.3109/07357901003631007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
ZBTB7 was recently recognized as a proto-oncogene. We studied its prognostic value and relationship to clinicopathological variables in 125 breast cancer patients. ZBTB7 expression was significantly higher in breast cancer tissues than in normal breast tissues, but its gene amplification copies were relatively low. ZBTB7 expression levels were significantly correlated with histological grade (p = .023) and marginally inversely correlated with the presence of estrogen receptors (p = .053); its overexpression significantly predicted shorter recurrence-free survival (p = .033). Our results showed that ZBTB7 might be implicated in breast cancer development and may serve as a promising prognostic marker.
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Affiliation(s)
- Hongyan Qu
- Department of Abdominal Surgery, The Tumor Hospital of Harbin Medical University, Harbin 150081, China.
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