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Ruangchan C, Ngamphiw C, Krasaesin A, Intarak N, Tongsima S, Kaewgahya M, Kawasaki K, Mahawong P, Paripurana K, Sookawat B, Jatooratthawichot P, Cox TC, Ohazama A, Ketudat Cairns JR, Porntaveetus T, Kantaputra P. Genetic Variants in KCTD1 Are Associated with Isolated Dental Anomalies. Int J Mol Sci 2024; 25:5179. [PMID: 38791218 PMCID: PMC11121487 DOI: 10.3390/ijms25105179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 04/29/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
KCTD1 plays crucial roles in regulating both the SHH and WNT/β-catenin signaling pathways, which are essential for tooth development. The objective of this study was to investigate if genetic variants in KCTD1 might also be associated with isolated dental anomalies. We clinically and radiographically investigated 362 patients affected with isolated dental anomalies. Whole exome sequencing identified two unrelated families with rare (p.Arg241Gln) or novel (p.Pro243Ser) variants in KCTD1. The variants segregated with the dental anomalies in all nine patients from the two families. Clinical findings of the patients included taurodontism, unseparated roots, long roots, tooth agenesis, a supernumerary tooth, torus palatinus, and torus mandibularis. The role of Kctd1 in root development is supported by our immunohistochemical study showing high expression of Kctd1 in Hertwig epithelial root sheath. The KCTD1 variants in our patients are the first variants found to be located in the C-terminal domain, which might disrupt protein-protein interactions and/or SUMOylation and subsequently result in aberrant WNT-SHH-BMP signaling and isolated dental anomalies. Functional studies on the p.Arg241Gln variant are consistent with an impact on β-catenin levels and canonical WNT signaling. This is the first report of the association of KCTD1 variants and isolated dental anomalies.
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Affiliation(s)
- Cholaporn Ruangchan
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai 50200, Thailand; (C.R.); (M.K.)
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology (BIOTEC), Pathum Thani 12120, Thailand; (C.N.); (S.T.)
| | - Annop Krasaesin
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (A.K.); (N.I.)
| | - Narin Intarak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (A.K.); (N.I.)
| | - Sissades Tongsima
- National Biobank of Thailand, National Center for Genetic Engineering and Biotechnology (BIOTEC), Pathum Thani 12120, Thailand; (C.N.); (S.T.)
| | - Massupa Kaewgahya
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai 50200, Thailand; (C.R.); (M.K.)
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 950-2180, Japan; (K.K.); (A.O.)
| | - Phitsanu Mahawong
- Division of Urology, Department of Surgery, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Kullaya Paripurana
- Dental Department, Suanphueng Hospital, Ratchaburi 70180, Thailand; (K.P.); (B.S.)
| | - Bussaneeya Sookawat
- Dental Department, Suanphueng Hospital, Ratchaburi 70180, Thailand; (K.P.); (B.S.)
| | - Peeranat Jatooratthawichot
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (P.J.); (J.R.K.C.)
| | - Timothy C. Cox
- Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64110, USA;
| | - Atsushi Ohazama
- Division of Oral Anatomy, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, Niigata 950-2180, Japan; (K.K.); (A.O.)
| | - James R. Ketudat Cairns
- School of Chemistry, Institute of Science, and Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (P.J.); (J.R.K.C.)
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (A.K.); (N.I.)
| | - Piranit Kantaputra
- Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai 50200, Thailand; (C.R.); (M.K.)
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand
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Gao G, Sumrall ES, Pitchiaya S, Bitzer M, Alberti S, Walter NG. Biomolecular condensates in kidney physiology and disease. Nat Rev Nephrol 2023; 19:756-770. [PMID: 37752323 DOI: 10.1038/s41581-023-00767-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2023] [Indexed: 09/28/2023]
Abstract
The regulation and preservation of distinct intracellular and extracellular solute microenvironments is crucial for the maintenance of cellular homeostasis. In mammals, the kidneys control bodily salt and water homeostasis. Specifically, the urine-concentrating mechanism within the renal medulla causes fluctuations in extracellular osmolarity, which enables cells of the kidney to either conserve or eliminate water and electrolytes, depending on the balance between intake and loss. However, relatively little is known about the subcellular and molecular changes caused by such osmotic stresses. Advances have shown that many cells, including those of the kidney, rapidly (within seconds) and reversibly (within minutes) assemble membraneless, nano-to-microscale subcellular assemblies termed biomolecular condensates via the biophysical process of hyperosmotic phase separation (HOPS). Mechanistically, osmotic cell compression mediates changes in intracellular hydration, concentration and molecular crowding, rendering HOPS one of many related phase-separation phenomena. Osmotic stress causes numerous homo-multimeric proteins to condense, thereby affecting gene expression and cell survival. HOPS rapidly regulates specific cellular biochemical processes before appropriate protective or corrective action by broader stress response mechanisms can be initiated. Here, we broadly survey emerging evidence for, and the impact of, biomolecular condensates in nephrology, where initial concentration buffering by HOPS and its subsequent cellular escalation mechanisms are expected to have important implications for kidney physiology and disease.
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Affiliation(s)
- Guoming Gao
- Biophysics Graduate Program, University of Michigan, Ann Arbor, MI, USA
- Department of Chemistry and Center for RNA Biomedicine, University of Michigan, Ann Arbor, MI, USA
| | - Emily S Sumrall
- Biophysics Graduate Program, University of Michigan, Ann Arbor, MI, USA
- Department of Chemistry and Center for RNA Biomedicine, University of Michigan, Ann Arbor, MI, USA
| | | | - Markus Bitzer
- Department of Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Simon Alberti
- Technische Universität Dresden, Biotechnology Center (BIOTEC) and Center for Molecular and Cellular Engineering (CMCB), Dresden, Germany
| | - Nils G Walter
- Department of Chemistry and Center for RNA Biomedicine, University of Michigan, Ann Arbor, MI, USA.
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3
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Di Fiore A, Bellardinelli S, Pirone L, Russo R, Angrisani A, Terriaca G, Bowen M, Bordin F, Besharat ZM, Canettieri G, Fabretti F, Di Gaetano S, Di Marcotullio L, Pedone E, Moretti M, De Smaele E. KCTD1 is a new modulator of the KCASH family of Hedgehog suppressors. Neoplasia 2023; 43:100926. [PMID: 37597490 PMCID: PMC10462845 DOI: 10.1016/j.neo.2023.100926] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/21/2023]
Abstract
The Sonic Hedgehog (Hh) signal transduction pathway plays a critical role in many developmental processes and, when deregulated, may contribute to several cancers, including basal cell carcinoma, medulloblastoma, colorectal, prostate, and pancreatic cancer. In recent years, several Hh inhibitors have been developed, mainly acting on the Smo receptor. However, drug resistance due to Smo mutations or non-canonical Hh pathway activation highlights the need to identify further mechanisms of Hh pathway modulation. Among these, deacetylation of the Hh transcription factor Gli1 by the histone deacetylase HDAC1 increases Hh activity. On the other end, the KCASH family of oncosuppressors binds HDAC1, leading to its ubiquitination and subsequent proteasomal degradation, leaving Gli1 acetylated and not active. It was recently demonstrated that the potassium channel containing protein KCTD15 is able to interact with KCASH2 protein and stabilize it, enhancing its effect on HDAC1 and Hh pathway. KCTD15 and KCTD1 proteins share a high homology and are clustered in a specific KCTD subfamily. We characterize here KCTD1 role on the Hh pathway. Therefore, we demonstrated KCTD1 interaction with KCASH1 and KCASH2 proteins, and its role in their stabilization by reducing their ubiquitination and proteasome-mediated degradation. Consequently, KCTD1 expression reduces HDAC1 protein levels and Hh/Gli1 activity, inhibiting Hh dependent cell proliferation in Hh tumour cells. Furthermore, analysis of expression data on publicly available databases indicates that KCTD1 expression is reduced in Hh dependent MB samples, compared to normal cerebella, suggesting that KCTD1 may represent a new putative target for therapeutic approaches against Hh-dependent tumour.
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Affiliation(s)
- A Di Fiore
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - S Bellardinelli
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - L Pirone
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - R Russo
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy; Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli, Caserta, Italy
| | - A Angrisani
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - G Terriaca
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - M Bowen
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - F Bordin
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - Z M Besharat
- Department of Experimental Medicine, Sapienza University of Rome, Italy
| | - G Canettieri
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - F Fabretti
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - S Di Gaetano
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - L Di Marcotullio
- Department of Molecular Medicine, Sapienza University of Rome, Italy
| | - E Pedone
- Institute of Biostructures and Bioimaging, CNR, Naples 80131, Italy
| | - M Moretti
- Department of Experimental Medicine, Sapienza University of Rome, Italy; Neuromed Institute, Pozzilli 86077, Italy
| | - E De Smaele
- Department of Experimental Medicine, Sapienza University of Rome, Italy.
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Angrisani A, Di Fiore A, De Smaele E, Moretti M. The emerging role of the KCTD proteins in cancer. Cell Commun Signal 2021; 19:56. [PMID: 34001146 PMCID: PMC8127222 DOI: 10.1186/s12964-021-00737-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 04/05/2021] [Indexed: 12/24/2022] Open
Abstract
The human family of Potassium (K+) Channel Tetramerization Domain (KCTD) proteins counts 25 members, and a significant number of them are still only partially characterized. While some of the KCTDs have been linked to neurological disorders or obesity, a growing tally of KCTDs are being associated with cancer hallmarks or involved in the modulation of specific oncogenic pathways. Indeed, the potential relevance of the variegate KCTD family in cancer warrants an updated picture of the current knowledge and highlights the need for further research on KCTD members as either putative therapeutic targets, or diagnostic/prognostic markers. Homology between family members, capability to participate in ubiquitination and degradation of different protein targets, ability to heterodimerize between members, role played in the main signalling pathways involved in development and cancer, are all factors that need to be considered in the search for new key players in tumorigenesis. In this review we summarize the recent published evidence on KCTD members' involvement in cancer. Furthermore, by integrating this information with data extrapolated from public databases that suggest new potential associations with cancers, we hypothesize that the number of KCTD family members involved in tumorigenesis (either as positive or negative modulator) may be bigger than so far demonstrated. Video abstract.
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Affiliation(s)
| | - Annamaria Di Fiore
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Enrico De Smaele
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy.
| | - Marta Moretti
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
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5
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Magnesium and Calcium Homeostasis Depend on KCTD1 Function in the Distal Nephron. Cell Rep 2021; 34:108616. [PMID: 33440155 PMCID: PMC7869691 DOI: 10.1016/j.celrep.2020.108616] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/31/2020] [Accepted: 12/17/2020] [Indexed: 11/20/2022] Open
Abstract
Magnesium (Mg2+) homeostasis depends on active transcellular Mg2+ reuptake from urine in distal convoluted tubules (DCTs) via the Mg2+ channel TRPM6, whose activity has been proposed to be regulated by EGF. Calcium (Ca2+) homeostasis depends on paracellular reabsorption in the thick ascending limbs of Henle (TALs). KCTD1 promotes terminal differentiation of TALs/DCTs, but how its deficiency affects urinary Mg2+ and Ca2+ reabsorption is unknown. Here, this study shows that DCT1-specific KCTD1 inactivation leads to hypomagnesemia despite normal TRPM6 levels because of reduced levels of the sodium chloride co-transporter NCC, whereas Mg2+ homeostasis does not depend on EGF. Moreover, KCTD1 deficiency impairs paracellular urinary Ca2+ and Mg2+ reabsorption in TALs because of reduced NKCC2/claudin-16/-19 and increased claudin-14 expression, leading to hypocalcemia and consequently to secondary hyperparathyroidism and progressive metabolic bone disease. Thus, KCTD1 regulates urinary reabsorption of Mg2+ and Ca2+ by inducing expression of NCC in DCTs and NKCC2/claudin-16/-19 in TALs.
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6
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Hu L, Chen L, Yang L, Ye Z, Huang W, Li X, Liu Q, Qiu J, Ding X. KCTD1 mutants in scalp‑ear‑nipple syndrome and AP‑2α P59A in Char syndrome reciprocally abrogate their interactions, but can regulate Wnt/β‑catenin signaling. Mol Med Rep 2020; 22:3895-3903. [PMID: 33000225 PMCID: PMC7533495 DOI: 10.3892/mmr.2020.11457] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/14/2020] [Indexed: 12/26/2022] Open
Abstract
Potassium-channel tetramerization-domain-containing 1 (KCTD1) mutations are reported to result in scalp-ear-nipple syndrome. These mutations occur in the conserved broad-complex, tramtrack and bric a brac domain, which is associated with inhibited transcriptional activity. However, the mechanisms of KCTD1 mutants have not previously been elucidated; thus, the present study aimed to investigate whether KCTD1 mutants affect their interaction with transcription factor AP-2α and their regulation of the Wnt pathway. Results from the present study demonstrated that none of the ten KCTD1 mutants had an inhibitory effect on the transcriptional activity of AP-2α. Co-immunoprecipitation assays demonstrated that certain mutants exhibited changeable localization compared with the nuclear localization of wild-type KCTD1, but no KCTD1 mutant interacted with AP-2α. Almost all KCTD1 mutants, except KCTD1 A30E and H33Q, exhibited differential inhibitory effects on regulating TOPFLASH luciferase reporter activity. In addition, the interaction region of KCTD1 to the PY motif (amino acids 59–62) in AP-2α was identified. KCTD1 exhibited no suppressive effects on the transcriptional activity of the AP-2α P59A mutant, resulting in Char syndrome, a genetic disorder characterized by a distinctive facial appearance, heart defect and hand abnormalities, by altered protein cellular localization that abolished protein interactions. However, the P59A, P60A, P61R and 4A AP-2α mutants inhibited TOPFLASH reporter activity. Moreover, AP-2α and KCTD1 inhibited β-catenin expression levels and SW480 cell viability. The present study thus identified a putative mechanism of disease-related KCTD1 mutants and AP-2α mutants by disrupting their interaction with the wildtype proteins AP-2α and KCTD1 and influencing the regulation of the Wnt/β-catenin pathway.
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Affiliation(s)
- Lingyu Hu
- Department of Obstetrics and Gynecology, Third Xiangya Hospital of The Central South University, Changsha, Hunan 410013, P.R. China
| | - Li Chen
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Liu Yang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Zi Ye
- Yali High School of Changsha, Changsha, Hunan 410007, P.R. China
| | - Wenhuan Huang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Xinxin Li
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Qing Liu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Junlu Qiu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Xiaofeng Ding
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
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Bhute S, Sarmah D, Datta A, Rane P, Shard A, Goswami A, Borah A, Kalia K, Dave KR, Bhattacharya P. Molecular Pathogenesis and Interventional Strategies for Alzheimer's Disease: Promises and Pitfalls. ACS Pharmacol Transl Sci 2020; 3:472-488. [PMID: 32566913 DOI: 10.1021/acsptsci.9b00104] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) is a debilitating disorder characterized by age-related dementia, which has no effective treatment to date. β-Amyloid depositions and hyperphosphorylated tau proteins are the main pathological hallmarks, along with oxidative stress, N-methyl-d-aspartate (NMDA) receptor-mediated excitotoxicity, and low levels of acetylcholine. Current pharmacotherapy for AD only provides symptomatic relief and limited improvement in cognitive functions. Many molecules have been explored that show promising outcomes in AD therapy and can regulate cellular survival through different pathways. To have a vivid approach to strategize the treatment regimen, AD physiopathology should be better explained considering diverse etiological factors in conjunction with biochemical disturbances. This Review attempts to discuss different disease modification approaches and address the novel therapeutic targets of AD that might pave the way for new drug discovery using the well-defined targets for therapy of the disease.
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Affiliation(s)
- Shashikala Bhute
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Deepaneeta Sarmah
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Aishika Datta
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Pallavi Rane
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Amit Shard
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Avirag Goswami
- Department of Neurology, Albert Einstein Medical Center, Philadelphia, Pennsylvania 19141, United States
| | - Anupom Borah
- Department of Life Science and Bioinformatics, Assam University, Silchar, Assam-788011, India
| | - Kiran Kalia
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Kunjan R Dave
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
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8
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Pirone L, Smaldone G, Spinelli R, Barberisi M, Beguinot F, Vitagliano L, Miele C, Di Gaetano S, Raciti GA, Pedone E. KCTD1: A novel modulator of adipogenesis through the interaction with the transcription factor AP2α. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:158514. [PMID: 31465887 DOI: 10.1016/j.bbalip.2019.08.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 07/09/2019] [Accepted: 08/22/2019] [Indexed: 01/23/2023]
Abstract
Adipogenesis has an important role in regulating energy balance, tissue homeostasis and disease pathogenesis. 3T3-L1 preadipocytes have been widely used as an in vitro model for studying adipocyte differentiation. We here show that KCTD1, a member of the potassium channel containing tetramerization domain proteins, plays an active role in adipogenesis. In particular, we show KCTD1 expression 3T3-L1 cells increases upon adipogenesis induction. Treatment of 3T3-L1 preadipocytes with Kctd1-specific siRNA inhibited the differentiation, as indicated by reduction of expression of the specific adipogenic markers C/ebpα, Pparγ2, Glut4, and Adiponectin. Moreover, we also show that the protein physically interacts with the transcription factor AP2α, a known inhibitor of adipogenesis, both in vitro and in cells. Interestingly, our data indicate that KCTD1 promotes adipogenesis through the interaction with AP2α and by removing it from the nucleus. Collectively, these findings disclose a novel role for KCTD1 and pave the way for novel strategies aimed at modulating adipogenesis.
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Affiliation(s)
- Luciano Pirone
- Istituto di Biostrutture e Bioimmagini, CNR, Napoli, Italy
| | | | - Rosa Spinelli
- URT "Genomica del Diabete", Istituto per l'Endocrinologia e l'Oncologia Sperimentale "Gaetano Salvatore", CNR, Napoli, Italy; Dipartimento di Scienze Mediche Traslazionali, Università degli Studi di Napoli Federico II, Italy
| | - Manlio Barberisi
- Dipartimento Scienze Anastesiologiche, Chirurgiche E Dell'emergenza, Università Della Campania-Luigi Vanvitelli, Caserta, Italy
| | - Francesco Beguinot
- URT "Genomica del Diabete", Istituto per l'Endocrinologia e l'Oncologia Sperimentale "Gaetano Salvatore", CNR, Napoli, Italy; Dipartimento di Scienze Mediche Traslazionali, Università degli Studi di Napoli Federico II, Italy
| | | | - Claudia Miele
- URT "Genomica del Diabete", Istituto per l'Endocrinologia e l'Oncologia Sperimentale "Gaetano Salvatore", CNR, Napoli, Italy; Dipartimento di Scienze Mediche Traslazionali, Università degli Studi di Napoli Federico II, Italy
| | | | - Gregory Alexander Raciti
- URT "Genomica del Diabete", Istituto per l'Endocrinologia e l'Oncologia Sperimentale "Gaetano Salvatore", CNR, Napoli, Italy; Dipartimento di Scienze Mediche Traslazionali, Università degli Studi di Napoli Federico II, Italy
| | - Emilia Pedone
- Istituto di Biostrutture e Bioimmagini, CNR, Napoli, Italy.
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9
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Kumar S, Rathkolb B, Sabrautzki S, Krebs S, Kemter E, Becker L, Beckers J, Bekeredjian R, Brommage R, Calzada-Wack J, Garrett L, Hölter SM, Horsch M, Klingenspor M, Klopstock T, Moreth K, Neff F, Rozman J, Fuchs H, Gailus-Durner V, Hrabe de Angelis M, Wolf E, Aigner B. Standardized, systemic phenotypic analysis reveals kidney dysfunction as main alteration of Kctd1 I27N mutant mice. J Biomed Sci 2017; 24:57. [PMID: 28818080 PMCID: PMC5559776 DOI: 10.1186/s12929-017-0365-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 08/09/2017] [Indexed: 12/28/2022] Open
Abstract
Background Increased levels of blood plasma urea were used as phenotypic parameter for establishing novel mouse models for kidney diseases on the genetic background of C3H inbred mice in the phenotype-driven Munich ENU mouse mutagenesis project. The phenotypically dominant mutant line HST014 was established and further analyzed. Methods Analysis of the causative mutation as well as the standardized, systemic phenotypic analysis of the mutant line was carried out. Results The causative mutation was detected in the potassium channel tetramerization domain containing 1 (Kctd1) gene which leads to the amino acid exchange Kctd1I27N thereby affecting the functional BTB domain of the protein. This line is the first mouse model harboring a Kctd1 mutation. Kctd1I27N homozygous mutant mice die perinatally. Standardized, systemic phenotypic analysis of Kctd1I27N heterozygous mutants was carried out in the German Mouse Clinic (GMC). Systematic morphological investigation of the external physical appearance did not detect the specific alterations that are described in KCTD1 mutant human patients affected by the scalp-ear-nipple (SEN) syndrome. The main pathological phenotype of the Kctd1I27N heterozygous mutant mice consists of kidney dysfunction and secondary effects thereof, without gross additional primary alterations in the other phenotypic parameters analyzed. Genome-wide transcriptome profiling analysis at the age of 4 months revealed about 100 differentially expressed genes (DEGs) in kidneys of Kctd1I27N heterozygous mutants as compared to wild-type controls. Conclusions In summary, the main alteration of the Kctd1I27N heterozygous mutants consists in kidney dysfunction. Additional analyses in 9–21 week-old heterozygous mutants revealed only few minor effects. Electronic supplementary material The online version of this article (doi:10.1186/s12929-017-0365-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sudhir Kumar
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany
| | - Birgit Rathkolb
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany.,German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Sibylle Sabrautzki
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Research Unit Comparative Medicine, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Stefan Krebs
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany
| | - Elisabeth Kemter
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany
| | - Lore Becker
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Department of Neurology, Friedrich-Baur-Institute, University Hospital Munich, 80336, Munich, Germany
| | - Johannes Beckers
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany.,Chair of Experimental Genetics, Center of Life and Food Sciences Weihenstephan, TU Munich, 85350, Freising-Weihenstephan, Germany
| | - Raffi Bekeredjian
- Department of Medicine III, Division of Cardiology, University of Heidelberg, 69120, Heidelberg, Germany
| | - Robert Brommage
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Julia Calzada-Wack
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Lillian Garrett
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Sabine M Hölter
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Marion Horsch
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Martin Klingenspor
- Molecular Nutritional Medicine, Else Kröner-Fresenius Center, TU Munich, 85350, Freising-Weihenstephan, Germany
| | - Thomas Klopstock
- Department of Neurology, Friedrich-Baur-Institute, University Hospital Munich, 80336, Munich, Germany.,German Center for Vertigo and Balance Disorders, University Hospital Munich, 81377, Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), 80336, Munich, Germany.,German Center for Neurodegenerative Diseases (DZNE), 80336, Munich, Germany
| | - Kristin Moreth
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Frauke Neff
- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Jan Rozman
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany.,Molecular Nutritional Medicine, Else Kröner-Fresenius Center, TU Munich, 85350, Freising-Weihenstephan, Germany
| | - Helmut Fuchs
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Valérie Gailus-Durner
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany.,Member of German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany.,Chair of Experimental Genetics, Center of Life and Food Sciences Weihenstephan, TU Munich, 85350, Freising-Weihenstephan, Germany.,German Center for Vertigo and Balance Disorders, University Hospital Munich, 81377, Munich, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany
| | - Bernhard Aigner
- Chair for Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis, Gene Center, LMU Munich, 81377, Munich, Germany.
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10
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Wang X, Sun H, Liao H, Wang C, Jiang C, Zhang Y, Cao Z. MicroRNA-155-3p Mediates TNF-α-Inhibited Cementoblast Differentiation. J Dent Res 2017; 96:1430-1437. [PMID: 28692806 DOI: 10.1177/0022034517718790] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- X. Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - H. Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - H. Liao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - C. Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - C. Jiang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Y. Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Oral Implantology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Z. Cao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
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11
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Liu Z, Song F, Ma ZL, Xiong Q, Wang J, Guo D, Sun G. Bivalent Copper Ions Promote Fibrillar Aggregation of KCTD1 and Induce Cytotoxicity. Sci Rep 2016; 6:32658. [PMID: 27596723 PMCID: PMC5011690 DOI: 10.1038/srep32658] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/11/2016] [Indexed: 01/04/2023] Open
Abstract
Potassium channel tetramerization domain containing 1 (KCTD1) family members have a BTB/POZ domain, which can facilitate protein-protein interactions involved in the regulation of different signaling pathways. KCTD proteins have potential Zn(2+)/Cu(2+) binding sites with currently unknown structural and functional roles. We investigated potential Cu(2+)-specific effects on KCTD1 using circular dichroism, turbidity measurement, fluorescent dye binding, proteinase K (PK) digestion, cell proliferation and apoptosis assays. These experiments indicate that the KCTD1 secondary structure assumes greater β-sheet content and the proteins aggregate into a PK-resistant form under 20 μM Cu(2+), and this β-sheet-rich aggregation with Cu(2+) promotes fibril formation, which results in increased cell toxicity by apoptosis. Our results reveal a novel role for Cu(2+) in determining the structure and function of KCTD1.
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Affiliation(s)
- Zhepeng Liu
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Feifei Song
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Zhi-li Ma
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Qiushuang Xiong
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Jingwen Wang
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Deyin Guo
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
| | - Guihong Sun
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, P.R. China
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12
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Tilley L, Straimer J, Gnädig NF, Ralph SA, Fidock DA. Artemisinin Action and Resistance in Plasmodium falciparum. Trends Parasitol 2016; 32:682-696. [PMID: 27289273 DOI: 10.1016/j.pt.2016.05.010] [Citation(s) in RCA: 206] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/10/2016] [Accepted: 05/13/2016] [Indexed: 12/16/2022]
Abstract
The worldwide use of artemisinin-based combination therapies (ACTs) has contributed in recent years to a substantial reduction in deaths resulting from Plasmodium falciparum malaria. Resistance to artemisinins, however, has emerged in Southeast Asia. Clinically, resistance is defined as a slower rate of parasite clearance in patients treated with an artemisinin derivative or an ACT. These slow clearance rates associate with enhanced survival rates of ring-stage parasites briefly exposed in vitro to dihydroartemisinin. We describe recent progress made in defining the molecular basis of artemisinin resistance, which has identified a primary role for the P. falciparum K13 protein. Using K13 mutations as molecular markers, epidemiological studies are now tracking the emergence and spread of artemisinin resistance. Mechanistic studies suggest potential ways to overcome resistance.
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Affiliation(s)
- Leann Tilley
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, Australia.
| | - Judith Straimer
- Department of Microbiology and Immunology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Nina F Gnädig
- Department of Microbiology and Immunology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Stuart A Ralph
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, Australia
| | - David A Fidock
- Department of Microbiology and Immunology, Columbia University College of Physicians and Surgeons, New York, NY, USA; Division of Infectious Diseases, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA.
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13
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Liang SS, Ouyang HJ, Liu J, Chen B, Nie QH, Zhang XQ. Expression of variant transcripts of the potassium channel tetramerization domain-containing 15 (KCTD15) gene and their association with fatness traits in chickens. Domest Anim Endocrinol 2015; 50:65-71. [PMID: 25447881 DOI: 10.1016/j.domaniend.2014.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 09/19/2014] [Accepted: 09/22/2014] [Indexed: 12/17/2022]
Abstract
The aim of this study was to characterize the structure, expression, and biological functions of potassium channel tetramerization domain containing 15 (KCTD15) in chickens. We compared the KCTD15 expression level in samples of hypothalamic, adipose, and liver tissue of Xinghua chickens that were maintained on different dietary status. An association analysis of KCTD15 gene variant transcripts with fatness traits in a F2 resource population of chickens was performed. Three KCTD15 transcripts were identified in which the complete transcript was predominantly expressed in adipose tissue and the hypothalamus. The chicken KCTD15 gene was regulated by both feeding and fasting and consumption of a high-fat diet. The expression level of KCTD15 gene was markedly decreased in hypothalamus and liver of fasted and refed chickens (P < 0.05) and significantly downregulated in adipose tissue by the high-fat diet (P < 0.05). Three single-nucleotide polymorphisms of the KCTD15 gene were significantly associated with a number of fatness traits in chicken (P < 0.05). These results suggest that KCTD15 have a potential role regulation of obesity and fat metabolism in chickens.
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Affiliation(s)
- S S Liang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - H J Ouyang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - J Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - B Chen
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
| | - Q H Nie
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China.
| | - X Q Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding and Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, Guangdong, China
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14
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ATP5H/KCTD2 locus is associated with Alzheimer's disease risk. Mol Psychiatry 2014; 19:682-7. [PMID: 23857120 PMCID: PMC4031637 DOI: 10.1038/mp.2013.86] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 05/25/2013] [Accepted: 05/30/2013] [Indexed: 11/13/2022]
Abstract
To identify loci associated with Alzheimer disease, we conducted a three-stage analysis using existing genome-wide association studies (GWAS) and genotyping in a new sample. In Stage I, all suggestive single-nucleotide polymorphisms (at P<0.001) in a previously reported GWAS of seven independent studies (8082 Alzheimer's disease (AD) cases; 12 040 controls) were selected, and in Stage II these were examined in an in silico analysis within the Cohorts for Heart and Aging Research in Genomic Epidemiology consortium GWAS (1367 cases and 12904 controls). Six novel signals reaching P<5 × 10(-6) were genotyped in an independent Stage III sample (the Fundació ACE data set) of 2200 sporadic AD patients and 2301 controls. We identified a novel association with AD in the adenosine triphosphate (ATP) synthase, H+ transporting, mitochondrial F0 (ATP5H)/Potassium channel tetramerization domain-containing protein 2 (KCTD2) locus, which reached genome-wide significance in the combined discovery and genotyping sample (rs11870474, odds ratio (OR)=1.58, P=2.6 × 10(-7) in discovery and OR=1.43, P=0.004 in Fundació ACE data set; combined OR=1.53, P=4.7 × 10(-9)). This ATP5H/KCTD2 locus has an important function in mitochondrial energy production and neuronal hyperpolarization during cellular stress conditions, such as hypoxia or glucose deprivation.
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15
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Li X, Chen C, Wang F, Huang W, Liang Z, Xiao Y, Wei K, Wan Z, Hu X, Xiang S, Ding X, Zhang J. KCTD1 suppresses canonical Wnt signaling pathway by enhancing β-catenin degradation. PLoS One 2014; 9:e94343. [PMID: 24736394 PMCID: PMC3988066 DOI: 10.1371/journal.pone.0094343] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 03/12/2014] [Indexed: 11/18/2022] Open
Abstract
The canonical Wnt signaling pathway controls normal embryonic development, cellular proliferation and growth, and its aberrant activity results in human carcinogenesis. The core component in regulation of this pathway is β-catenin, but molecular regulation mechanisms of β-catenin stability are not completely known. Here, our recent studies have shown that KCTD1 strongly inhibits TCF/LEF reporter activity. Moreover, KCTD1 interacted with β-catenin both in vivo by co-immunoprecipitation as well as in vitro through GST pull-down assays. We further mapped the interaction regions to the 1-9 armadillo repeats of β-catenin and the BTB domain of KCTD1, especially Position Ala-30 and His-33. Immunofluorescence analysis indicated that KCTD1 promotes the cytoplasmic accumulation of β-catenin. Furthermore, protein stability assays revealed that KCTD1 enhances the ubiquitination/degradation of β-catenin in a concentration-dependent manner in HeLa cells. And the degradation of β-catenin mediated by KCTD1 was alleviated by the proteasome inhibitor, MG132. In addition, KCTD1-mediated β-catenin degradation was dependent on casein kinase 1 (CK1)- and glycogen synthase kinase-3β (GSK-3β)-mediated phosphorylation and enhanced by the E3 ubiquitin ligase β-transducin repeat-containing protein (β-TrCP). Moreover, KCTD1 suppressed the expression of endogenous Wnt downstream genes and transcription factor AP-2α. Finally, we found that Wnt pathway member APC and tumor suppressor p53 influence KCTD1-mediated downregulation of β-catenin. These results suggest that KCTD1 functions as a novel inhibitor of Wnt signaling pathway.
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Affiliation(s)
- Xinxin Li
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Cheng Chen
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Fangmei Wang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Wenhuan Huang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Zhongheng Liang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Yuzhong Xiao
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Ke Wei
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Zhenxing Wan
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Xiang Hu
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Shuanglin Xiang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
| | - Xiaofeng Ding
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
- * E-mail:
| | - Jian Zhang
- Key Laboratory of Protein Chemistry and Development Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha, China
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16
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Liu Z, Xiang Y, Sun G. The KCTD family of proteins: structure, function, disease relevance. Cell Biosci 2013; 3:45. [PMID: 24268103 PMCID: PMC3882106 DOI: 10.1186/2045-3701-3-45] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 11/04/2013] [Indexed: 02/06/2023] Open
Abstract
The family of potassium channel tetramerizationdomain (KCTD) proteins consists of 26 members with mostly unknown functions. The name of the protein family is due to the sequence similarity between the conserved N-terminal region of KCTD proteins and the tetramerization domain in some voltage-gated potassium channels. Dozens of publications suggest that KCTD proteins have roles in various biological processes and diseases. In this review, we summarize the character of Bric-a-brack,Tram-track, Broad complex(BTB) of KCTD proteins, their roles in the ubiquitination pathway, and the roles of KCTD mutants in diseases. Furthermore, we review potential downstream signaling pathways and discuss future studies that should be performed.
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Affiliation(s)
- Zhepeng Liu
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yaqian Xiang
- Jinchu University of Technology, No.33 xiangshan avenue, Jingmen 448000, People's Republic of China
| | - Guihong Sun
- School of Basic Medical Sciences, Wuhan University, Wuhan 430072, People's Republic of China
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17
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Skoblov M, Marakhonov A, Marakasova E, Guskova A, Chandhoke V, Birerdinc A, Baranova A. Protein partners of KCTD proteins provide insights about their functional roles in cell differentiation and vertebrate development. Bioessays 2013; 35:586-96. [PMID: 23592240 DOI: 10.1002/bies.201300002] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The KCTD family includes tetramerization (T1) domain containing proteins with diverse biological effects. We identified a novel member of the KCTD family, BTBD10. A comprehensive analysis of protein-protein interactions (PPIs) allowed us to put forth a number of testable hypotheses concerning the biological functions for individual KCTD proteins. In particular, we predict that KCTD20 participates in the AKT-mTOR-p70 S6k signaling cascade, KCTD5 plays a role in cytokinesis in a NEK6 and ch-TOG-dependent manner, KCTD10 regulates the RhoA/RhoB pathway. Developmental regulator KCTD15 represses AP-2α and contributes to energy homeostasis by suppressing early adipogenesis. TNFAIP1-like KCTD proteins may participate in post-replication DNA repair through PCNA ubiquitination. KCTD12 may suppress the proliferation of gastrointestinal cells through interference with GABAb signaling. KCTD9 deserves experimental attention as the only eukaryotic protein with a DNA-like pentapeptide repeat domain. The value of manual curation of PPIs and analysis of existing high-throughput data should not be underestimated.
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Affiliation(s)
- Mikhail Skoblov
- Research Center for Medical Genetics RAMS, Moscow, Russian Federation, Russia
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18
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Mutations in KCTD1 cause scalp-ear-nipple syndrome. Am J Hum Genet 2013; 92:621-6. [PMID: 23541344 DOI: 10.1016/j.ajhg.2013.03.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 02/28/2013] [Accepted: 03/06/2013] [Indexed: 11/20/2022] Open
Abstract
Scalp-ear-nipple (SEN) syndrome is a rare, autosomal-dominant disorder characterized by cutis aplasia of the scalp; minor anomalies of the external ears, digits, and nails; and malformations of the breast. We used linkage analysis and exome sequencing of a multiplex family affected by SEN syndrome to identify potassium-channel tetramerization-domain-containing 1 (KCTD1) mutations that cause SEN syndrome. Evaluation of a total of ten families affected by SEN syndrome revealed KCTD1 missense mutations in each family tested. All of the mutations occurred in a KCTD1 region encoding a highly conserved bric-a-brac, tram track, and broad complex (BTB) domain that is required for transcriptional repressor activity. KCTD1 inhibits the transactivation of the transcription factor AP-2α (TFAP2A) via its BTB domain, and mutations in TFAP2A cause cutis aplasia in individuals with branchiooculofacial syndrome (BOFS), suggesting a potential overlap in the pathogenesis of SEN syndrome and BOFS. The identification of KCTD1 mutations in SEN syndrome reveals a role for this BTB-domain-containing transcriptional repressor during ectodermal development.
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19
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Inhibition of neural crest formation by Kctd15 involves regulation of transcription factor AP-2. Proc Natl Acad Sci U S A 2013; 110:2870-5. [PMID: 23382213 DOI: 10.1073/pnas.1300203110] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The neural crest develops in vertebrate embryos within a discrete domain at the neural plate boundary and eventually gives rise to a migrating population of cells that differentiate into a multitude of derivatives. We have shown that the broad-complex, tramtrack and bric a brac (BTB) domain-containing factor potassium channel tetramerization domain containing 15 (Kctd15) inhibits neural crest formation, and we proposed that its function is to delimit the neural crest domain. Here we report that Kctd15 is a highly effective inhibitor of transcription factor activating enhancer binding protein 2 (AP-2) in zebrafish embryos and in human cells; AP-2 is known to be critical for several steps of neural crest development. Kctd15 interacts with AP-2α but does not interfere with its nuclear localization or binding to cognate sites in the genome. Kctd15 binds specifically to the activation domain of AP-2α and efficiently inhibits transcriptional activation by a hybrid protein composed of the regulatory protein Gal4 DNA binding and AP-2α activation domains. Mutation of one proline residue in the activation domain to an alanine (P59A) yields a protein that is highly active but largely insensitive to Kctd15. These results indicate that Kctd15 acts in the embryo at least in part by specifically binding to the activation domain of AP-2α, thereby blocking the function of this critical factor in the neural crest induction hierarchy.
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20
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Hu X, Yan F, Wang F, Yang Z, Xiao L, Li L, Xiang S, Zhou J, Ding X, Zhang J. TNFAIP1 interacts with KCTD10 to promote the degradation of KCTD10 proteins and inhibit the transcriptional activities of NF-κB and AP-1. Mol Biol Rep 2012; 39:9911-9. [PMID: 22810651 DOI: 10.1007/s11033-012-1858-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Accepted: 06/11/2012] [Indexed: 11/30/2022]
Abstract
The broad-complex, tramtrack, and bric-a-brac/poxvirus and zinc finger domain-containing protein tumor necrosis factor, alpha-induced protein 1 (TNFAIP1) was first identified as a gene whose expression can be induced by the tumor necrosis factor alpha. Some studies showed that TNFAIP1 may function in DNA replication, apoptosis and human diseases. However, the definite functions and the mechanisms of TNFAIP1 are poorly known. In this study, we performed a yeast two-hybrid assay and used TNFAIP1 as the bait to screen human brain cDNA library. Potassium channel tetramerisation domain containing 10 (KCTD10) was identified as TNFAIP1-interacting partner. The KCTD10-TNFAIP1 interaction was then confirmed by the in vitro GST pull-down assays and the in vivo co-immunoprecipitation and colocalization assays. In addition, protein degradation and ubiquitin assays revealed TNFAIP1 overexpression resulted in ubiquitin-mediated degradation of KCTD10 proteins, which was significantly alleviated with the proteasome inhibitor MG132 treatment. Furthermore, transient transfection assays with two reporters showed that TNFAIP1 and KCTD10 inhibited the transcriptional activities of nuclear factor kappa B (NF-κB) and activating protein-1 reporters. Taken together, our results indicated the novel interaction and function between KCTD10 and TNFAIP1 in human PDIP1 family.
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Affiliation(s)
- Xiang Hu
- Key Laboratory of Protein Chemistry and Developmental Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha 410081, Hunan, China
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Gutierrez-Aguilar R, Kim DH, Woods SC, Seeley RJ. Expression of new loci associated with obesity in diet-induced obese rats: from genetics to physiology. Obesity (Silver Spring) 2012; 20:306-12. [PMID: 21779089 DOI: 10.1038/oby.2011.236] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Genome-wide association studies (GWAS) are a powerful tool for revealing genes associated with common human obesity. New loci associated with obesity have recently been reported, but their function and metabolic implications remain to be elucidated. In order to begin identifying the role of some of these obesity-related loci, the closest genes to the polymorphism of each locus were selected and their expression was compared in the hypothalamus, adipose tissue, liver, soleus muscle, and extensor digitorum longus muscle (EDL) of Long-Evans rats maintained on chow or a high-fat diet (HFD) for 6 weeks. From a total of 19 genes analyzed, seven genes (ETV5, FTO, GNPDA2, KCTD15, TMEM18, MC4R, and SH2B1) were down-regulated in the hypothalamus of HFD compared to chow-fed rats. In adipose tissue of rats fed on HFD, the mRNA levels of BCDIN3, KCTD15, and SULT1A1 were down-regulated, whereas those of MTCH2, PTER, and TUFM were up-regulated. In the liver, three genes were up-regulated (PTER, SULT1A1, and TUFM) in HFD relative to chow-fed rats, and TMEM18 was down-regulated. Finally, in soleus muscle of HFD-fed rats, BCDIN3, BDNF, and TMEM18 were down-regulated, and in the EDL muscle SH2B1 and TUFM were up-regulated. mRNA levels in the hypothalamus were compared between fed and fasted states, and only KCTD15 was down-regulated during fasting when fed a chow diet. In conclusion, novel genes found to be associated with obesity are regulated by a HFD and the mRNA levels of KCTD15 is dependent on the nutritional status. These results suggest a potential role of these genes in the regulation of energy balance.
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22
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Dutta S, Dawid IB. Kctd15 inhibits neural crest formation by attenuating Wnt/beta-catenin signaling output. Development 2010; 137:3013-8. [PMID: 20685732 DOI: 10.1242/dev.047548] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Neural crest (NC) precursors are stem cells that are capable of forming many cell types after migration to different locations in the embryo. NC and placodes form at the neural plate border (NPB). The Wnt pathway is essential for specifying NC versus placodal identity in this cell population. Here we describe the BTB domain-containing protein Potassium channel tetramerization domain containing 15 (Kctd15) as a factor expressed in the NPB that efficiently inhibits NC induction in zebrafish and frog embryos. Whereas overexpression of Kctd15 inhibited NC formation, knockdown of Kctd15 led to expansion of the NC domain. Likewise, NC induction by Wnt3a plus Chordin in Xenopus animal explants was suppressed by Kctd15, but constitutively active beta-catenin reversed Kctd15-mediated suppression of NC induction. Suppression of NC induction by inhibition of Wnt8.1 was rescued by reduction of Kctd15 expression, linking Kctd15 action to the Wnt pathway. We propose that Kctd15 inhibits NC formation by attenuating the output of the canonical Wnt pathway, thereby restricting expansion of the NC domain beyond its normal range.
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Affiliation(s)
- Sunit Dutta
- Laboratory of Molecular Genetics, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
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Cheung CYY, Tso AWK, Cheung BMY, Xu A, Ong KL, Fong CHY, Wat NMS, Janus ED, Sham PC, Lam KSL. Obesity susceptibility genetic variants identified from recent genome-wide association studies: implications in a chinese population. J Clin Endocrinol Metab 2010; 95:1395-403. [PMID: 20061430 DOI: 10.1210/jc.2009-1465] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Recent large-scale genome-wide association studies identified novel genetic variants associated with obesity and body mass index (BMI) in addition to the well-described FTO and MC4R genetic variants. OBJECTIVE This study aimed to examine 13 previously reported obesity and/or BMI-associated loci for associations with obesity in Chinese. DESIGN AND STUDY PARTICIPANTS This was a cross-sectional case-control study in 470 obese cases (BMI > or =27.5 kg/m(2)) and 700 normal-weight controls (18.5 < or = BMI < or = 23.0 kg/m(2)). RESULTS A significant association with obesity could be replicated (one tailed P < 0.05) in seven of the 13 single-nucleotide polymorphisms (SNPs) in the case-control study. These included GNPDA2 rs10938397 (P = 7.3 x 10(-4)); FTO rs8050136 (P = 8 x 10(-4)); MC4R rs17782313 (P = 1.2 x 10(-3)); KCTD15 rs29941 (P = 8 x 10(-3)); SFRS10-ETV5-DGKG rs7647305 (P = 0.023); SEC16B-RASAL2 rs10913469 (P = 0.041); and NEGR1 rs3101336 (P = 0.046). Combined genetic risk scores were calculated, and we observed ORs ranging from 1.17 to 1.23 for each unit increase in the genetic risk scores. Associations with obesity-related quantitative traits were analyzed separately for cases and controls. KCTD15 SNP rs29941 (P = 1 x 10(-3)) was significantly associated with fasting glucose in the control group, whereas only the FTO SNP rs8050136 was associated with BMI (P = 3.5 x 10(-3)) in the obese group. However, in an extension study of 1938 subjects from the population-based Hong Kong Cardiovascular Risk Factors Prevalence Study, rs8050136, rs10938397, and rs17782313 showed significant associations with BMI. CONCLUSION We have succeeded in replicating, in a Chinese population, the associations with obesity in seven SNPs reported in recent genome-wide association studies. Further functional and fine-mapping studies to elucidate the roles of these putative obesity-related genes and genetic variants are warranted.
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Affiliation(s)
- Chloe Y Y Cheung
- Department of Medicine, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong
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Li H, Liu Q, Hu X, Feng D, Xiang S, He Z, Hu X, Zhou J, Ding X, Zhou C, Zhang J. Human ZCCHC12 activates AP-1 and CREB signaling as a transcriptional co-activator. Acta Biochim Biophys Sin (Shanghai) 2009; 41:535-44. [PMID: 19578717 DOI: 10.1093/abbs/gmp042] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Mouse zinc finger CCHC domain containing 12 gene (ZCCHC12) has been identified as a transcriptional co-activator of bone morphogenetic protein (BMP) signaling, and human ZCCHC12 was reported to be related to non-syndromic X-linked mental retardation (NS-XLMR). However, the details of how human ZCCHC12 involve in the NS-XLMR still remain unclear. In this study, we identified a novel nuclear localization signal (NLS) in the middle of human ZCCHC12 protein which is responsible for the nuclear localization. Multiple-tissue northern blot analysis indicated that ZCCHC12 is highly expressed in human brain. Furthermore, in situ hybridization showed that ZCCHC12 is specifically expressed in neuroepithelium of forebrain, midbrain, and diencephalon regions of mouse E10.5 embryos. Luciferase reporter assays demonstrated that ZCCHC12 enhanced the transcriptional activities of activator protein 1 (AP-1) and cAMP response element binding protein (CREB) as a coactivator. In conclusion, we identified a new NLS in ZCCHC12 and figured out that ZCCHC12 functions as a transcriptional co-activator of AP-1 and CREB.
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Affiliation(s)
- Hong Li
- Key Laboratory of Protein Chemistry and Developmental Biology of State Education Ministry of China, College of Life Science, Hunan Normal University, Changsha 410081, China
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Ding X, Luo C, Zhou J, Zhong Y, Hu X, Zhou F, Ren K, Gan L, He A, Zhu J, Gao X, Zhang J. The interaction of KCTD1 with transcription factor AP-2α inhibits its transactivation. J Cell Biochem 2009; 106:285-95. [DOI: 10.1002/jcb.22002] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Genome-wide association yields new sequence variants at seven loci that associate with measures of obesity. Nat Genet 2008; 41:18-24. [PMID: 19079260 DOI: 10.1038/ng.274] [Citation(s) in RCA: 1006] [Impact Index Per Article: 62.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Accepted: 10/08/2008] [Indexed: 12/16/2022]
Abstract
Obesity results from the interaction of genetic and environmental factors. To search for sequence variants that affect variation in two common measures of obesity, weight and body mass index (BMI), both of which are highly heritable, we performed a genome-wide association (GWA) study with 305,846 SNPs typed in 25,344 Icelandic, 2,998 Dutch, 1,890 European Americans and 1,160 African American subjects and combined the results with previously published results from the Diabetes Genetics Initiative (DGI) on 3,024 Scandinavians. We selected 43 variants in 19 regions for follow-up in 5,586 Danish individuals and compared the results to a genome-wide study on obesity-related traits from the GIANT consortium. In total, 29 variants, some correlated, in 11 chromosomal regions reached a genome-wide significance threshold of P < 1.6 x 10(-7). This includes previously identified variants close to or in the FTO, MC4R, BDNF and SH2B1 genes, in addition to variants at seven loci not previously connected with obesity.
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