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Asanoma K, Yagi H, Onoyama I, Cui L, Hori E, Kawakami M, Maenohara S, Hachisuga K, Tomonobe H, Kodama K, Yasunaga M, Ohgami T, Okugawa K, Yahata H, Kitao H, Kato K. The BHLHE40‒PPM1F‒AMPK pathway regulates energy metabolism and is associated with the aggressiveness of endometrial cancer. J Biol Chem 2024; 300:105695. [PMID: 38301894 PMCID: PMC10904277 DOI: 10.1016/j.jbc.2024.105695] [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: 09/04/2023] [Revised: 01/03/2024] [Accepted: 01/17/2024] [Indexed: 02/03/2024] Open
Abstract
BHLHE40 is a basic helix-loop-helix transcription factor that is involved in multiple cell activities including differentiation, cell cycle, and epithelial-to-mesenchymal transition. While there is growing evidence to support the functions of BHLHE40 in energy metabolism, little is known about the mechanism. In this study, we found that BHLHE40 expression was downregulated in cases of endometrial cancer of higher grade and advanced disease. Knockdown of BHLHE40 in endometrial cancer cells resulted in suppressed oxygen consumption and enhanced extracellular acidification. Suppressed pyruvate dehydrogenase (PDH) activity and enhanced lactated dehydrogenase (LDH) activity were observed in the knockdown cells. Knockdown of BHLHE40 also led to dephosphorylation of AMPKα Thr172 and enhanced phosphorylation of pyruvate dehydrogenase E1 subunit alpha 1 (PDHA1) Ser293 and lactate dehydrogenase A (LDHA) Tyr10. These results suggested that BHLHE40 modulates PDH and LDH activity by regulating the phosphorylation status of PDHA1 and LDHA. We found that BHLHE40 enhanced AMPKα phosphorylation by directly suppressing the transcription of an AMPKα-specific phosphatase, PPM1F. Our immunohistochemical study showed that the expression of BHLHE40, PPM1F, and phosphorylated AMPKα correlated with the prognosis of endometrial cancer patients. Because AMPK is a central regulator of energy metabolism in cancer cells, targeting the BHLHE40‒PPM1F‒AMPK axis may represent a strategy to control cancer development.
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Affiliation(s)
- Kazuo Asanoma
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | - Hiroshi Yagi
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ichiro Onoyama
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Lin Cui
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Emiko Hori
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Minoru Kawakami
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shoji Maenohara
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuhisa Hachisuga
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroshi Tomonobe
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Keisuke Kodama
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masafumi Yasunaga
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tatsuhiro Ohgami
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kaoru Okugawa
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideaki Yahata
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroyuki Kitao
- Oral Medicine Research Center, Fukuoka Dental College, Fukuoka, Japan
| | - Kiyoko Kato
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
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Ma W, Tan X, Xie Z, Yu J, Li P, Lin X, Ouyang S, Liu Z, Hou Q, Xie N, Peng T, Li L, Dai Z, Chen X, Xie W. P53: A Key Target in the Development of Osteoarthritis. Mol Biotechnol 2024; 66:1-10. [PMID: 37154864 DOI: 10.1007/s12033-023-00736-9] [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: 11/29/2022] [Accepted: 03/25/2023] [Indexed: 05/10/2023]
Abstract
Osteoarthritis (OA), a chronic degenerative disease characterized mainly by damage to the articular cartilage, is increasingly relevant to the pathological processes of senescence, apoptosis, autophagy, proliferation, and differentiation of chondrocytes. Clinical strategies for osteoarthritis can only improve symptoms and even along with side effects due to age, sex, disease, and other factors. Therefore, there is an urgent need to identify new ideas and targets for current clinical treatment. The tumor suppressor gene p53, which has been identified as a potential target for tumor therapeutic intervention, is responsible for the direct induction of the pathological processes involved in OA modulation. Consequently, deciphering the characteristics of p53 in chondrocytes is essential for investigating OA pathogenesis due to p53 regulation in an array of signaling pathways. This review highlights the effects of p53 on senescence, apoptosis, and autophagy of chondrocytes and its role in the development of OA. It also elucidates the underlying mechanism of p53 regulation in OA, which may help provide a novel strategies for the clinical treatment of OA.
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Affiliation(s)
- Wentao Ma
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Xiaoqian Tan
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Zhongcheng Xie
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Jiang Yu
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Pin Li
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Xiaoyan Lin
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Siyu Ouyang
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Zhiyang Liu
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Qin Hou
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Nan Xie
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Tianhong Peng
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Liang Li
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China
| | - Zhu Dai
- Department of Orthopedics, Hengyang Medical School, The First Affiliated Hospital of University of South China, Hengyang, 421001, Hunan, China.
| | - Xi Chen
- Hengyang Medical College, University of South China, Hengyang, 421001, Hunan, China.
- Clinical Anatomy & Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
| | - Wei Xie
- Clinical Anatomy & Reproductive Medicine Application Institute, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
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de Villalaín L, Álvarez-Teijeiro S, Rodríguez-Santamarta T, Fernández del Valle Á, Allonca E, Rodrigo JP, de Vicente JC, García-Pedrero JM. Emerging Role of Decoy Receptor-2 as a Cancer Risk Predictor in Oral Potentially Malignant Disorders. Int J Mol Sci 2023; 24:14382. [PMID: 37762685 PMCID: PMC10531848 DOI: 10.3390/ijms241814382] [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: 08/30/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
The aim of this study was to evaluate the expression of the senescence markers, Decoy Receptor 2 (DcR2) and Differentiated Embryo-Chondrocyte expressed gen 1 (DEC1), in oral potentially malignant disorders (OPMDs) to ascertain their possible association with oral cancer risk. The immunohistochemical analysis of DcR2 and DEC1 expression (along with p16 and Ki67 expression) was carried out in 60 patients with clinically diagnosed oral leukoplakia. Fifteen cases (25%) subsequently developed an invasive carcinoma. Correlations between protein marker expression, histological grade and oral cancer risk were assessed. DcR2, DEC1 and Ki67 protein expressions were found to correlate significantly with increased oral cancer risk, and also with an increased grade of dysplasia. Multivariate analysis demonstrated that DcR2 and Ki67 expression are independent predictors of oral cancer development. Our results evidence for the first time the potential of DcR2 as an early biomarker to assess oral cancer risk in patients with oral leukoplakia (HR = 59.7, p = 0.015), showing a superior predictive value to histology (HR = 4.225, p = 0.08). These findings reveal that the increased expression of DcR2 and DEC1 occurred frequently in OPMDs. In addition, DcR2 expression emerges as a powerful biomarker for oral cancer risk assessment in patients with oral leukoplakia.
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Affiliation(s)
- Lucas de Villalaín
- Department of Oral and Maxillofacial Surgery, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (L.d.V.); (T.R.-S.); (Á.F.d.V.)
| | - Saúl Álvarez-Teijeiro
- Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (S.Á.-T.); (E.A.); (J.P.R.)
- Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33006 Oviedo, Asturias, Spain
- CIBER de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Tania Rodríguez-Santamarta
- Department of Oral and Maxillofacial Surgery, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (L.d.V.); (T.R.-S.); (Á.F.d.V.)
| | - Álvaro Fernández del Valle
- Department of Oral and Maxillofacial Surgery, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (L.d.V.); (T.R.-S.); (Á.F.d.V.)
| | - Eva Allonca
- Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (S.Á.-T.); (E.A.); (J.P.R.)
- Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33006 Oviedo, Asturias, Spain
| | - Juan P. Rodrigo
- Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (S.Á.-T.); (E.A.); (J.P.R.)
- Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33006 Oviedo, Asturias, Spain
- CIBER de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Juan Carlos de Vicente
- Department of Oral and Maxillofacial Surgery, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (L.d.V.); (T.R.-S.); (Á.F.d.V.)
- Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (S.Á.-T.); (E.A.); (J.P.R.)
| | - Juana M. García-Pedrero
- Department of Otolaryngology, Hospital Universitario Central de Asturias and Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain; (S.Á.-T.); (E.A.); (J.P.R.)
- Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33006 Oviedo, Asturias, Spain
- CIBER de Cáncer (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain
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Schäfer M, Schneider M, Müller T, Franz N, Braspenning-Wesch I, Stephan S, Schmidt G, Krijgsveld J, Helm D, Rösl F, Hasche D. Spatial tissue proteomics reveals distinct landscapes of heterogeneity in cutaneous papillomavirus-induced keratinocyte carcinomas. J Med Virol 2023; 95:e28850. [PMID: 37322807 DOI: 10.1002/jmv.28850] [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: 03/20/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/17/2023]
Abstract
Infection with certain cutaneous human papillomaviruses (HPV), in conjunction with chronic ultraviolet (UV) exposure, are the major cofactors of non-melanoma skin cancer (NMSC), the most frequent cancer type worldwide. Cutaneous squamous cell carcinomas (SCCs) as well as tumors in general represent three-dimensional entities determined by both temporal and spatial constraints. Whole tissue proteomics is a straightforward approach to understand tumorigenesis in better detail, but studies focusing on different progression states toward a dedifferentiated SCC phenotype on a spatial level are rare. Here, we applied an innovative proteomic workflow on formalin-fixed, paraffin-embedded (FFPE) epithelial tumors derived from the preclinical animal model Mastomys coucha. This rodent is naturally infected with its genuine cutaneous papillomavirus and closely mimics skin carcinogenesis in the context of cutaneous HPV infections in humans. We deciphered cellular networks by comparing diverse epithelial tissues with respect to their differentiation level and infection status. Our study reveals novel regulatory proteins and pathways associated with virus-induced tumor initiation and progression of SCCs. This approach provides the basis to better comprehend the multistep process of skin carcinogenesis.
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Affiliation(s)
- Miriam Schäfer
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martin Schneider
- Proteomics Core Facility, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Torsten Müller
- Division Proteomics of Stem Cells and Cancer, Research Program "Functional and Structural Genomics", German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty, Heidelberg, Germany
| | - Natascha Franz
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ilona Braspenning-Wesch
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sonja Stephan
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Gabriele Schmidt
- Core Facility Unit Light Microscopy, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jeroen Krijgsveld
- Division Proteomics of Stem Cells and Cancer, Research Program "Functional and Structural Genomics", German Cancer Research Center (DKFZ), Heidelberg, Germany
- Heidelberg University, Medical Faculty, Heidelberg, Germany
| | - Dominic Helm
- Proteomics Core Facility, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Frank Rösl
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Daniel Hasche
- Division of Viral Transformation Mechanisms, Research Program "Infection, Inflammation and Cancer", German Cancer Research Center (DKFZ), Heidelberg, Germany
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Wang CY, Qiu ZJ, Zhang P, Tang XQ. Differentiated Embryo-Chondrocyte Expressed Gene1 and Parkinson's Disease: New Insights and Therapeutic Perspectives. Curr Neuropharmacol 2023; 21:2251-2265. [PMID: 37132111 PMCID: PMC10556388 DOI: 10.2174/1570159x21666230502123729] [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: 07/13/2022] [Revised: 09/05/2022] [Accepted: 10/09/2022] [Indexed: 05/04/2023] Open
Abstract
Differentiated embryo-chondrocyte expressed gene1 (DEC1), an important transcription factor with a basic helix-loop-helix domain, is ubiquitously expressed in both human embryonic and adult tissues. DEC1 is involved in neural differentiation and neural maturation in the central nervous system (CNS). Recent studies suggest that DEC1 protects against Parkinson's disease (PD) by regulating apoptosis, oxidative stress, lipid metabolism, immune system, and glucose metabolism disorders. In this review, we summarize the recent progress on the role of DEC1 in the pathogenesis of PD and provide new insights into the prevention and treatment of PD and neurodegenerative diseases.
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Affiliation(s)
- Chun-Yan Wang
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Zheng-Jie Qiu
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, Hunan International Scientific and Technological Cooperation Base of Arteriosclerotic Disease, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
| | - Ping Zhang
- The Affiliated Nanhua Hospital, Department of Neurology, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xiao-Qing Tang
- Hengyang Key Laboratory of Neurodegeneration and Cognitive Impairment, Institute of Neuroscience, Hengyang Medical College, University of South China, Hengyang, Hunan 421001, China
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Zhang Y, Yang M, Zhang S, Yang Z, Zhu Y, Wang Y, Chen Z, Lv X, Huang Z, Xie Y, Cai L. BHLHE40 promotes osteoclastogenesis and abnormal bone resorption via c-Fos/NFATc1. Cell Biosci 2022; 12:70. [PMID: 35619122 PMCID: PMC9134610 DOI: 10.1186/s13578-022-00813-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 05/11/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Dysregulated osteoclast activity due to altered osteoclast differentiation causes multiple bone diseases. Osteoclasts are multinucleated giant cells derived from hematopoietic stem cells and play a major role in bone absorption. However, the mechanisms underlying the tight regulation of osteoclast differentiation in multiple pathophysiological status remain unknown.
Results
We showed that Bhlhe40 upregulation is tightly associated with osteoclast differentiation and osteoporosis. Functionally, Bhlhe40 promoted osteoclast differentiation in vitro, and Bhlhe40 deficiency led to increased bone mass and decreased osteoclast differentiation in vivo. Moreover, Bhlhe40 deficient mice resisted estrogen deficiency and aging-induced osteoporosis. Mechanism study showed that the increase in bone mass due to Bhlhe40 deficiency was a cell intrinsic defect in osteoclast differentiation in these mice. BHLHE40 upregulated the gene expression of Fos and Nfatc1 by directly binding to their promoter regions. Notably, inhibition of Fos/Nfatc1 abrogated the enhanced osteoclast differentiation induced by BHLHE40 overexpression.
Conclusions
Our research reveals a novel Bhlhe40/c-Fos/Nfatc1 axis involved in regulating osteoclastogenesis and shows that osteoporosis caused by estrogen deficiency and aging can be rescued by regulating Bhlhe40 in mice. This may help in the development of a new strategy for the treatment of osteoporosis.
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Mohibi S, Chen X, Zhang J. ZFP14 Regulates Cancer Cell Growth and Migration by Modulating p53 Protein Stability as Part of the MDM2 E3 Ubiquitin Ligase Complex. Cancers (Basel) 2022; 14:cancers14215226. [PMID: 36358645 PMCID: PMC9655198 DOI: 10.3390/cancers14215226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/16/2022] [Accepted: 10/23/2022] [Indexed: 11/16/2022] Open
Abstract
Multi-zinc finger proteins that contain a KRAB domain are part of the biggest family of transcription factors in mammals. However, the physiological or pathological functions for the majority of them are unknown. Here, we showed that ZFP14 (also known as ZNF531) is a p53 target gene that can be induced upon genotoxic stress in a p53-dependent manner. To determine the function of ZFP14 in mouse and human cancer cell lines, we generated multiple cell lines where ZFP14 was knocked out. We showed that ZFP14-KO inhibits cancer cell growth and migration. We also showed that, as a target of p53, ZFP14, in turn, represses p53 expression and that the knockdown of p53 restores the potential of ZFP14-KO cells to proliferate and migrate. Mechanistically, we found that ZFP14 modulates p53 protein stability by increasing its ubiquitination via associating with and possibly enhancing MDM2/p53 complex integrity through its zinc finger domains. Our findings suggest that the reciprocal regulation of p53 and ZFP14 represents a novel p53-ZFP14 regulatory loop and that ZFP14 plays a role in p53-dependent tumor suppression.
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Song W, Zhang D, Mi J, Du W, Yang Y, Chen R, Tian C, Zhao X, Zou K. E-cadherin maintains the undifferentiated state of mouse spermatogonial progenitor cells via β-catenin. Cell Biosci 2022; 12:141. [PMID: 36050783 PMCID: PMC9434974 DOI: 10.1186/s13578-022-00880-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 08/10/2022] [Indexed: 11/22/2022] Open
Abstract
Background Cadherins play a pivotal role in facilitating intercellular interactions between spermatogonial progenitor cells (SPCs) and their surrounding microenvironment. Specifically, E-cadherin serves as a cellular marker of SPCs in many species. Depletion of E-cadherin in mouse SPCs showed no obvious effect on SPCs homing and spermatogenesis. Results Here, we investigated the regulatory role of E-cadherin in regulating SPCs fate. Specific deletion of E-cadherin in germ cells was shown to promote SPCs differentiation, evidencing by reduced PLZF+ population and increased c-Kit+ population in mouse testes. E-cadherin loss down-regulated the expression level of β-catenin, leading to the reduced β-catenin in nuclear localization for transcriptional activity. Remarkably, increasing expression level of Cadherin-22 (CDH22) appeared specifically after E-cadherin deletion, indicating CDH22 played a synergistic effect with E-cadherin in SPCs. By searching for the binding partners of β-catenin, Lymphoid enhancer-binding factor 1 (LEF1), T-cell factor (TCF3), histone deacetylase 4 (HDAC4) and signal transducer and activator 3 (STAT3) were identified as suppressors of SPCs differentiation by regulating acetylation of differentiation genes with PLZF. Conclusions Two surface markers of SPCs, E-cadherin and Cadherin-22, synergically maintain the undifferentiation of SPCs via the pivotal intermediate molecule β-catenin. LEF1, TCF3, STAT3 and HDAC4 were identified as co-regulatory factors of β-catenin in regulation of SPC fate. These observations revealed a novel regulatory pattern of cadherins on SPCs fate. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00880-w.
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Shan E, Hao Y, Wang H, Zhang Z, Hu J, Wang G, Liu W, Yan B, Hiroaki H, Yang J. Differentiated embryonic chondrocyte expressed gene-1 (DEC1) enhances the development of colorectal cancer with an involvement of the STAT3 signaling. Neoplasia 2022; 27:100783. [PMID: 35334277 PMCID: PMC8956864 DOI: 10.1016/j.neo.2022.100783] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 03/03/2022] [Accepted: 03/03/2022] [Indexed: 01/25/2023]
Abstract
Colorectal cancer (CRC) is the second deadly and the third most common malignancy worldwide. It has been projected that annual new cases of CRC will increase by 63% in 2040, constituting an even greater health challenge for decades to come. This study has linked DEC1 (differentiated embryonic chondrocyte expressed gene 1) to the pathogenesis of CRC. Based on the analysis of patient samples and database data, DEC1 is expressed much higher in CRC than the adjacent normal tissues. CRC patients with higher DEC1 expression have a shorter survival time. The carcinogenesis protocol with azoxymethane/dextran sulfate induces a higher number of tumors with larger sizes in DEC1+/+ than DEC1−/− mice. Overexpression of DEC1 increases the expression of proliferation- and antiapoptosis-related genes, but decreases the level of proapoptotic genes. Mechanistically, this study has shown that DEC1 is functionally looped to the IL-6/STAT3 signaling pathway (interleukin-6/signal transducer and activator of transcription 3). IL-6 induces DEC1, and DEC1 enhances the phosphorylation of STAT3, resulting in increased pSTAT3/STAT3 ratio. DEC1 and STAT3 are present in reciprocal immunocomplexes, pointing to physical interactions (presumably with pSTAT3). These findings establish that DEC1 is a CRC enhancer. The enhancement is achieved largely through the IL-6/STAT3 pathway. The potential of the physical interaction between DEC1 and STAT3 will likely serve as a foundation to develop intervention strategies for CRC prevention and therapy.
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Wang D, Wei X, Geng X, Li P, Li L. GDF15 enhances proliferation of aged chondrocytes by phosphorylating SMAD2. J Orthop Sci 2022; 27:249-256. [PMID: 33419625 DOI: 10.1016/j.jos.2020.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/23/2020] [Accepted: 12/01/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Aging is one of the primary factors influencing development of osteoarthritis, and the TGF-β pathway plays an important role in age-related osteoarthritis. Specifically, GDF15 phosphorylates SMAD2/3 in the TGF-β pathway to inhibit cardiomyocyte hypertrophy, and promote proliferation of chondrocytes. However, age-dependent changes in the level of GDF15 are unclear, as is whether GDF15 phosphorylates SMAD2/3 in the TGF-β pathway to promote proliferation of old chondrocytes. This study, therefore, sought to examine the effect of various GDF15 concentrations on old chondrocyte proliferation. METHODS Serum and cartilage specimens of young adults and older adults were collected, and GDF15 expression was quantified. Human chondrocytes were then cultured following routine protocols, and different concentrations of recombinant human GDF15 or pSMAD2 inhibitor were added into the culture medium. After 48 h of culturing, the proliferation of chondrocytes was detected by EdU, and the expression MMP13, SMAD2, and pSMAD2 was detected in chondrocytes via western blot and qRT-PCR analysis. RESULTS The GDF15 content in serum and cartilage of young adults was higher than that of older adults (p < 0.05). The number of EdU-positive cells in the experimental group (containing recombinant human GDF15) was higher than that in the control group (medium only) (p < 0.05). Compared with the control group, chondrocytes in the experimental group showed increased pSMAD2 and type II collagen content (p < 0.05) and decreased MMP13 (p < 0.05), with no significant difference in SMAD2 content (p > 0.05). Moreover, no significant differences were observed between the control group and the TGF-β signaling inhibitor group. The gene expression level of each index was consistent with the protein expression level. CONCLUSIONS The GDF15 content of serum and cartilage in young adults is higher than in older adults, and GDF15 functions to promote the proliferation of chondrocytes by phosphorylating SMAD2 in older individuals.
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Affiliation(s)
- Dongming Wang
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Taiyuan 030001, China
| | - Xiaochun Wei
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Taiyuan 030001, China
| | - Xiang Geng
- Shanxi Health Vocational College, No. 100, Wenjin Road, Jinzhong, 030619, China
| | - Pengcui Li
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Taiyuan 030001, China
| | - Lu Li
- Department of Orthopedics, Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, The Second Hospital of Shanxi Medical University, No. 382, Wuyi Road, Taiyuan 030001, China.
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11
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Lv W, Li Q, Jia B, He Y, Ru Y, Guo Q, Li X, Lin W. Differentiated embryonic chondrocyte-expressed gene 1 promotes temozolomide resistance by modulating the SP1-MGMT axis in glioblastoma. Am J Transl Res 2021; 13:2331-2349. [PMID: 34017393 PMCID: PMC8129344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 12/27/2020] [Indexed: 06/12/2023]
Abstract
Glioblastoma multiforme (GBM) is a malignant brain tumor with a high mortality rate and poor prognosis. Temozolomide (TMZ) is a first-line drug against GBM, but resistance limits its use. We previously reported that differentiated embryonic chondrocyte (DEC1) expression is associated with TMZ resistance and poor prognosis in GBM; however, the underlying mechanism remains unclear. By using glioma cell lines with stably overexpressed or silenced DEC1, we examined the effects of DEC1 on TMZ sensitivity using proliferation assays, Western blotting, and flow cytometry. We demonstrated that DEC1 overexpression suppressed, whereas DEC1 knockdown enhanced, TMZ-induced cell apoptosis in methylguanine methyltransferase (MGMT)-positive T98G and LN18 cells but not in MGMT-negative U251 cells. Mechanistically, DEC1 positively regulated MGMT through specificity protein 1 (SP1). MGMT silencing in DEC1-overexpressing cells or overexpression in DEC1-silenced cells abrogated DEC1's effects on TMZ sensitivity, and siRNA-mediated SP1 knockdown phenocopied TMZ sensitivity, which was rescued by MGMT overexpression. Thus, DEC1 may control TMZ resistance via the SP1-MGMT axis. Immunohistochemical staining of the human glioma tissue microarray revealed that the expression levels of DEC1 and MGMT were correlated. Therefore, DEC1 expression has a predictive value for TMZ resistance and poor outcome in glioma patients, and is a novel therapeutic target in TMZ-resistant glioma.
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Affiliation(s)
- Weifeng Lv
- Department of Neurosurgery, Xijing Hospital, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Qi Li
- The Air Force Hospital from Northern Theater of PLAShenyang 110000, China
| | - Bo Jia
- Department of Neurosurgery, Xijing Hospital, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Yalong He
- Department of Neurosurgery, Xijing Hospital, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Yi Ru
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Qingdong Guo
- Department of Neurosurgery, Xijing Hospital, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Xia Li
- State Key Laboratory of Cancer Biology, Department of Biochemistry and Molecular Biology, Air Force Medical UniversityXi’an 710032, Shaanxi, China
| | - Wei Lin
- Department of Neurosurgery, Xijing Hospital, Air Force Medical UniversityXi’an 710032, Shaanxi, China
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12
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Kotolloshi R, Mirzakhani K, Ahlburg J, Kraft F, Pungsrinont T, Baniahmad A. Thyroid hormone induces cellular senescence in prostate cancer cells through induction of DEC1. J Steroid Biochem Mol Biol 2020; 201:105689. [PMID: 32360904 DOI: 10.1016/j.jsbmb.2020.105689] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 02/26/2020] [Accepted: 04/27/2020] [Indexed: 02/06/2023]
Abstract
While several studies link a state of hypothyroidism to extended lifespan of humans and mice, the role of thyroid hormone in cancer is more controversial since tumor-promoting as well as tumor-suppressive effects are known. In general, aberrant thyroid hormone levels are associated with increased cancer incidence. For prostate cancer (PCa) a prospective cohort study indicates that lower thyrotropin (TSH) and higher thyroxin (T4) levels are associated with an increased risk of PCa. However, triiodothyronine (T3) can attenuate PCa progression. Here we show that T3 treatment of human PCa cells reduces cell proliferation, by induction of cellular senescence. Interestingly, we could neither detect an increased expression of p16INK4A nor p21CIP1 cell cycle inhibitors, which are mediators of the two major pathways for senescence induction. This suggests that the T3-induced cellular senescence of PCa cells is driven by an alternative pathway. We show that T3-mediated cellular senescence is associated with increase of DEC1 expression encoded by the BHLHE40 gene and p15INK4B encoded by CDKN2B. Each DEC1/BHLHE40 and p15INK4B/CDKN2B knockdown reduced significantly the level of T3-mediated cellular senescence. The data suggest that DEC1 and p15INK4B are crucial for the T3-induced cellular senescence. In line with a protective role of cellular senescence in cancer, public databases provide evidence linking low DEC1 expression to poor survival of PCa patients. Further we show that the BHLHE40 promoter is responsive to T3 suggesting BHLHE40 being a target gene for the thyroid hormone receptor (TR). Taken together, the data suggest that T3 mediates cellular senescence in PCa cells through induction of DEC1- and p15INK4B -dependent pathway.
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Affiliation(s)
- Roland Kotolloshi
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Kimia Mirzakhani
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Joana Ahlburg
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Florian Kraft
- Institute of Human Genetics, Jena University Hospital, Jena, Germany; Institute of Human Genetics, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | | | - Aria Baniahmad
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
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PABPN1, a Target of p63, Modulates Keratinocyte Differentiation through Regulation of p63α mRNA Translation. J Invest Dermatol 2020; 140:2166-2177.e6. [PMID: 32243883 DOI: 10.1016/j.jid.2020.03.942] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 01/25/2023]
Abstract
p63 is expressed from two promoters and produces two N-terminal isoforms, TAp63 and ΔNp63. Alternative splicing creates three C-terminal isoforms p63α, p63β, and p63δ, whereas alternative polyadenylation (APA) in coding sequence creates two more C-terminal isoforms p63γ and p63ε. Although several transcription factors have been identified to differentially regulate the N-terminal p63 isoforms, it is unclear how the C-terminal p63 isoforms are regulated. Thus, we determined whether PABPN1, a key regulator of APA, may differentially regulate the C-terminal p63 isoforms. We found that PABPN1 deficiency increases p63γ mRNA through APA in coding sequence. We also found that PABPN1 is necessary for p63α translation by modulating the binding of translation initiation factors eIF4E and eIF4G to p63α mRNA. Moreover, we found that the p53 family, especially p63α, regulates PABPN1 transcription, suggesting that the mutual regulation between p63 and PABPN1 forms a feedback loop. Furthermore, we found that PABPN1 deficiency inhibits keratinocyte cell growth, which can be rescued by ectopic ΔNp63α. Finally, we found that PABPN1 controls the terminal differentiation of HaCaT keratinocytes by modulating ΔNp63α expression. Taken together, our findings suggest that PABPN1 is a key regulator of the C-terminal p63 isoforms through APA in coding sequence and mRNA translation and that the p63-PABPN1 loop modulates p63 activity and the APA landscape.
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Kiss Z, Mudryj M, Ghosh PM. Non-circadian aspects of BHLHE40 cellular function in cancer. Genes Cancer 2020; 11:1-19. [PMID: 32577154 PMCID: PMC7289903 DOI: 10.18632/genesandcancer.201] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/27/2020] [Indexed: 02/06/2023] Open
Abstract
While many genes specifically act as oncogenes or tumor suppressors, others are tumor promoters or suppressors in a context-dependent manner. Here we will review the basic-helix-loop-helix (BHLH) protein BHLHE40, (also known as BHLHB2, STRA13, DEC1, or SHARP2) which is overexpressed in gastric, breast, and brain tumors; and downregulated in colorectal, esophageal, pancreatic and lung cancer. As a transcription factor, BHLHE40 is expressed in the nucleus, where it binds to target gene promoters containing the E-box hexanucleotide sequence, but can also be expressed in the cytoplasm, where it stabilizes cyclin E, preventing cyclin E-mediated DNA replication and cell cycle progression. In different organs BHLHE40 regulates different targets; hence may have different impacts on tumorigenesis. BHLHE40 promotes PI3K/Akt/mTOR activation in breast cancer, activating tumor progression, but suppresses STAT1 expression in clear cell carcinoma, triggering tumor suppression. Target specificity likely depends on cooperation with other transcription factors. BHLHE40 is activated in lung and esophageal carcinoma by the tumor suppressor p53 inducing senescence and suppressing tumor growth, but is also activated under hypoxic conditions by HIF-1α in gastric cancer and hepatocellular carcinomas, stimulating tumor progression. Thus, BHLHE40 is a multi-functional protein that mediates the promotion or suppression of cancer in a context dependent manner.
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Affiliation(s)
- Zsofia Kiss
- VA Northern California Health Care System, Sacramento, CA, USA
- Department of Urology, University of California Davis School of Medicine, Sacramento, CA, USA
| | - Maria Mudryj
- VA Northern California Health Care System, Sacramento, CA, USA
- Department of Microbiology and Immunology, University of California, Davis, CA, USA
| | - Paramita M. Ghosh
- VA Northern California Health Care System, Sacramento, CA, USA
- Department of Urology, University of California Davis School of Medicine, Sacramento, CA, USA
- Department of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, Sacramento, CA, USA
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15
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Zhang J, Sun W, Kong X, Zhang Y, Yang HJ, Ren C, Jiang Y, Chen M, Chen X. Mutant p53 antagonizes p63/p73-mediated tumor suppression via Notch1. Proc Natl Acad Sci U S A 2019; 116:24259-24267. [PMID: 31712410 PMCID: PMC6883818 DOI: 10.1073/pnas.1913919116] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
p53 is the most frequently mutated gene in human cancers and mutant p53 has a gain of function (GOF) that promotes tumor progression and therapeutic resistance. One of the major GOF activities of mutant p53 is to suppress 2 other p53 family proteins, p63 and p73. However, the molecular basis is not fully understood. Here, we examined whether mutant p53 antagonizes p63/p73-mediated tumor suppression in vivo by using mutant p53-R270H knockin and TAp63/p73-deficient mouse models. We found that knockin mutant p53-R270H shortened the life span of p73+/- mice and subjected TAp63+/- or p73+/- mice to T lymphoblastic lymphomas (TLBLs). To unravel the underlying mechanism, we showed that mutant p53 formed a complex with Notch1 intracellular domain (NICD) and antagonized p63/p73-mediated repression of HES1 and ECM1. As a result, HES1 and ECM1 were overexpressed in TAp63+/- ;p53R270H/- and p73+/- ;p53R270H/- TLBLs, suggesting that normal function of HES1 and ECM1 in T cell activation is hyperactivated, leading to lymphomagenesis. Together, our data reveal a previously unappreciated mechanism by which GOF mutant p53 hijacks the p63/p73-regulated transcriptional program via the Notch1 pathway.
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Affiliation(s)
- Jin Zhang
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616;
| | - Wenqiang Sun
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Xiangmudong Kong
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Yanhong Zhang
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Hee Jung Yang
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Cong Ren
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Yuqian Jiang
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616
| | - Mingyi Chen
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Xinbin Chen
- Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California, Davis, CA 95616;
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Shen Y, Shi Z, Yan B. Carboxylesterases: Pharmacological Inhibition Regulated Expression and Transcriptional Involvement of Nuclear Receptors and other Transcription Factors. NUCLEAR RECEPTOR RESEARCH 2019. [DOI: 10.32527/2019/101435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Yuanjun Shen
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, University of Pittsburgh Department of Medicine, Pittsburgh, PA 15261, USA
| | - Zhanquan Shi
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45229, USA
| | - Bingfang Yan
- Division of Pharmaceutical Sciences, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45229, USA
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17
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Chen SY, Liu ST, Lin WR, Lin CK, Huang SM. The Mechanisms Underlying the Cytotoxic Effects of Copper Via Differentiated Embryonic Chondrocyte Gene 1. Int J Mol Sci 2019; 20:ijms20205225. [PMID: 31652494 PMCID: PMC6834119 DOI: 10.3390/ijms20205225] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/17/2019] [Accepted: 10/19/2019] [Indexed: 12/14/2022] Open
Abstract
Copper is an essential trace element within cells, but it also exerts cytotoxic effects through induction of reactive oxygen species (ROS) production. To determine the mechanisms underlying copper-induced ROS production, we examined the effects of copper sulfate in HeLa cells. Exposure to copper sulfate led to dose-dependent decreases in HeLa cell viability, along with increases in the subG1 and G2/M populations and corresponding decreases in the G1 population. Copper sulfate also increased the levels of apoptosis, senescence, mitochondrial dysfunction, autophagy, ROS, and the expression of several stress proteins, including ATF3, c-Fos, DEC1 (differentiated embryonic chondrocyte gene 1), p21, p53, and HIF-1α (hypoxia-inducible factor 1 alpha). The suppression of copper-induced ROS generation by the ROS scavenger N-acetyl cysteine verified copper’s functional role, while the suppression of copper’s effects by the copper chelator disulfiram, confirmed its specificity. Selective induction of HIF-1α, p53, and phosphorylated ERK proteins by copper was blocked by the knockdown of the transcription factor DEC1, suggesting copper’s effects are mediated by DEC1. In addition to HeLa cells, copper also exerted cytotoxic effects in human endometrial (HEC-1-A) and lung (A549) adenocarcinoma cells, but not in normal human kidney (HEK293) or bronchial (Beas-2B) epithelial cells. These findings shed new light on the functional roles of copper within cells.
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Affiliation(s)
- Ssu-Yu Chen
- Department of Biochemistry, National Defense Medical Center, Taipei 114, Taiwan.
| | - Shu-Ting Liu
- Department of Biochemistry, National Defense Medical Center, Taipei 114, Taiwan.
| | - Wun-Rong Lin
- Department of Urology, Mackay Memorial Hospital, Taipei 104, Taiwan.
- Department of Medicine, Mackay Medical College, New Taipei 252, Taiwan.
- Department of Cosmetic Applications and Management, Mackay Junior College of Medicine, Nursing, and Management, Taipei 112, Taiwan.
| | - Chi-Kang Lin
- Department of Obstetrics and Gynecology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan.
| | - Shih-Ming Huang
- Department of Biochemistry, National Defense Medical Center, Taipei 114, Taiwan.
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18
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Song W, Shi X, Xia Q, Yuan M, Liu J, Hao K, Qian Y, Zhao X, Zou K. PLZF suppresses differentiation of mouse spermatogonial progenitor cells via binding of differentiation associated genes. J Cell Physiol 2019; 235:3033-3042. [PMID: 31541472 DOI: 10.1002/jcp.29208] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/03/2019] [Indexed: 11/06/2022]
Abstract
Promyelocytic leukaemia zinc finger (PLZF) is a key factor in inhibiting differentiation of spermatogonial progenitor cells (SPCs), but the underlying mechanisms are still largely unknown. In this study, the regulation of PLZF on Kit, Stra8, Sohlh2, and Dmrt1 (SPCs differentiation related genes) was investigated. We found some PLZF potential binding sites existed in the promoters of Kit, Stra8, Sohlh2, and Dmrt1. Additionally, the expressions of KIT, STRA8, SOHLH2, and DMRT1 were upregulated when PLZF was knockdown in SPCs. Furthermore, chromatin immunoprecipitation quantitative polymerase chain reaction revealed PLZF directly bound to the promoters of Kit, Stra8, Sohlh2, and Dmrt1. Besides, dual luciferase assay verified PLZF repressed those gene expressions. Collectively, our finding indicate that PLZF binds to the promoter regions of Kit, Stra8, Sohlh2, and Dmrt1 to regulate SPCs differentiation, which facilitate us to further understand the regulatory mechanism of PLZF in SPCs fates.
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Affiliation(s)
- Weixiang Song
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xinglong Shi
- Bio-ID Center, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Qin Xia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Min Yuan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jiaxi Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Kunying Hao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yinjuan Qian
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Xiaodong Zhao
- Shanghai Center for Systems Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Kang Zou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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19
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Kuo CL, Hsieh Li SM, Liang SY, Liu ST, Huang LC, Wang WM, Yen LC, Huang SM. The antitumor properties of metformin and phenformin reflect their ability to inhibit the actions of differentiated embryo chondrocyte 1. Cancer Manag Res 2019; 11:6567-6579. [PMID: 31410055 PMCID: PMC6643064 DOI: 10.2147/cmar.s210637] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/20/2019] [Indexed: 12/13/2022] Open
Abstract
Background Differentiated embryo chondrocyte 1 (DEC1) is a helix-loop-helix transcription factor that directly binds to the class B E-box in target genes. DEC1 exerts both pro-survival and pro-apoptotic effects in a cell- and tissue-dependent manner. Its actions play role the progression of cancer remains unclear. Methods We first examined the functional roles of DEC1 using the transient promoter reporter assay. Then, the knockdown of DEC1 expression was performed with the short hairpin RNA strategy in HeLa and A2058 cancer cell lines to check the cell cycle and mitochondrial function profile using the flow cytometry and Seahorse assays. We later clarified the role of DEC1 in the tumorigenesis using the colony formation, anchorage-independent growth assay, and cellular proliferation analysis. Results In the present study, we tested two guanide-containing drugs, metformin and phenformin, and found that both exhibit cytotoxicity against HeLa cervical carcinoma and A2058 melanoma cells. This effect was mediated, at least in part, through activation of the AMPK pathway; degradation of important cellular proteins, such as DEC1 and p53; and suppression of mitochondrial function, colony formation, and anchorage-independent cell proliferation. Our results further suggest that the cytotoxicity of metformin and phenformin reflect the impact of the repressive actions of DEC1 on gene expression, including DEC1 itself. This in turn suppresses both anchorage-independent growth and cell proliferation. Conclusion These findings provide several lines of evidence suggesting that DEC1 activity contributes to tumorigenicity and that the antitumor properties of biguanides reflect their ability to inhibit DEC1 functions.
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Affiliation(s)
- Chun-Lin Kuo
- Department of Orthopaedic Surgery, Tri-Service General Hospital, National Defense Medical Center, Taiwan, Republic of China
| | - Shu-Man Hsieh Li
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China
| | - Shu-Yi Liang
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China
| | - Shu-Ting Liu
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China
| | - Li-Chun Huang
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China
| | - Wei-Ming Wang
- Department of Dermatology, Tri-Service General Hospital, National Defense Medical Center, Taiwan, Republic of China
| | - Li-Chen Yen
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China.,Department of Microbiology and Immunology, National Defense Medical Center, Taiwan, Republic of China
| | - Shih-Ming Huang
- Department of Biochemistry, National Defense Medical Center, Taiwan, Republic of China
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Sato F, Otsuka T, Kohsaka A, Le HT, Bhawal UK, Muragaki Y. Smad3 Suppresses Epithelial Cell Migration and Proliferation via the Clock Gene Dec1, Which Negatively Regulates the Expression of Clock Genes Dec2 and Per1. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:773-783. [PMID: 30664860 DOI: 10.1016/j.ajpath.2019.01.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/03/2018] [Accepted: 01/02/2019] [Indexed: 12/14/2022]
Abstract
Smad3 has circadian expression; however, whether Smad3 affects the expression of clock genes is poorly understood. Here, we investigated the regulatory mechanisms between Smad3 and the clock genes Dec1, Dec2, and Per1. In Smad3 knockout mice, the amplitude of locomotor activity was decreased, and Dec1 expression was decreased in the suprachiasmatic nucleus, liver, kidney, and tongue compared with control mice. Conversely, Dec2 and Per1 expression was increased compared with that of control mice. In Smad3 knockout mice, immunohistochemical staining revealed that Dec1 expression decreased, whereas Dec2 and Per1 expression increased in the endothelial cells of the kidney and liver. In NIH3T3 cells, Smad3 overexpression increased Dec1 expression, but decreased Dec2 and Per1 expression. In a wound-healing experiment that used Smad3 knockout mice, Dec1 expression decreased in the basal cells of squamous epithelium, promoting wound healing of the mucosa. Finally, the migration and proliferation of Smad3 knockdown squamous carcinoma cells was suppressed by Dec1 overexpression but was promoted by Dec2 overexpression. Dec1 overexpression decreased E-cadherin and proliferating cell nuclear antigen expression, whereas these expression levels were increased by Dec2 overexpression. These results suggest Smad3 is relevant to circadian rhythm and regulates cell migration and proliferation through Dec1, Dec2, and Per1 expression.
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Affiliation(s)
- Fuyuki Sato
- Department of Pathology, Wakayama Medical University School of Medicine, Wakayama, Japan.
| | - Tsuyoshi Otsuka
- Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Akira Kohsaka
- Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Hue Thi Le
- Department of Physiology, Wakayama Medical University School of Medicine, Wakayama, Japan
| | - Ujjal K Bhawal
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - Yasuteru Muragaki
- Department of Pathology, Wakayama Medical University School of Medicine, Wakayama, Japan
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Cardoso TF, Quintanilla R, Castelló A, Mármol-Sánchez E, Ballester M, Jordana J, Amills M. Analysing the Expression of Eight Clock Genes in Five Tissues From Fasting and Fed Sows. Front Genet 2018; 9:475. [PMID: 30405688 PMCID: PMC6201144 DOI: 10.3389/fgene.2018.00475] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 09/25/2018] [Indexed: 11/23/2022] Open
Abstract
In a previous study, we observed that circadian clock genes are differentially expressed in the skeletal muscle of fasting and fed sows. The goal of the current work was to investigate if these genes are also differentially expressed in tissues containing the central (hypothalamus) and peripheral (duodenum, dorsal fat, muscle, and liver) clocks. As animal material, we used 12 sows that fasted 12 h before slaughtering (T0) and 12 sows that were fed ad libitum 7 h prior slaughtering (T2). Tissue samples were collected immediately after slaughter and total RNA was subsequently extracted. The expression of the ARNTL, BHLHE40, CRY2, NPAS2, NR1D1, PER1, PER2, and SIK1 genes was measured by quantitative reverse transcription PCR. The numbers of clock genes showing differential expression before and after feeding varied depending on the tissue i.e., four in dorsal fat and duodenum, six in skeletal muscle, and seven in the liver. In contrast, none of the eight analysed genes displayed a significant differential expression in hypothalamus, the tissue where the central clock resides. This result supports that the differential expression of clock genes in the four tissues mentioned above is probably induced by nutrition and not by the central clock entrained by light. Moreover, we have observed that the NPAS2 and ARNTL genes display positive log2(FC) values in the five tissues under analysis, whilst the CRY2, PER1 (except dorsal fat) and PER2 (except hypothalamus) genes generally show negative log2(FC) values. Such result might be explained by the existence of a negative feedback loop between the ARNTL/NPAS2 and CRY/PER genes. Collectively, these results support that nutrition plays an important role in modulating the timing of porcine peripheral circadian clocks. Such regulation could be essential for coordinating the subsequent metabolic response to nutrient supply.
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Affiliation(s)
- Tainã Figueiredo Cardoso
- Department of Animal Genetics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus de la Universitat Autònoma de Barcelona, Bellaterra, Spain
- CAPES Foundation, Ministry of Education of Brazil, Brasilia, Brazil
| | - Raquel Quintanilla
- Animal Breeding and Genetics Programme, The Institute for Research and Technology in Food and Agriculture (IRTA), Barcelona, Spain
| | - Anna Castelló
- Department of Animal Genetics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus de la Universitat Autònoma de Barcelona, Bellaterra, Spain
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Emilio Mármol-Sánchez
- Department of Animal Genetics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus de la Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Maria Ballester
- Animal Breeding and Genetics Programme, The Institute for Research and Technology in Food and Agriculture (IRTA), Barcelona, Spain
| | - Jordi Jordana
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Marcel Amills
- Department of Animal Genetics, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus de la Universitat Autònoma de Barcelona, Bellaterra, Spain
- Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
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Ming X, Bao C, Hong T, Yang Y, Chen X, Jung YS, Qian Y. Clusterin, a Novel DEC1 Target, Modulates DNA Damage-Mediated Cell Death. Mol Cancer Res 2018; 16:1641-1651. [PMID: 30002194 DOI: 10.1158/1541-7786.mcr-18-0070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/28/2018] [Accepted: 06/20/2018] [Indexed: 11/16/2022]
Abstract
Differentiated embryonic chondrocyte expressed gene 1 (DEC1, also known as Sharp2/Stra13/BHLHE40) is a basic helix-loop-helix transcription factor that plays an important role in circadian rhythms, cell proliferation, apoptosis, cellular senescence, hypoxia response, and epithelial-to-mesenchymal transition of tumor cells. Secretory clusterin (sCLU) is a cytoprotective protein that guards against genotoxic stresses. Here, clusterin (CLU) was identified as a novel target gene of DEC1 and suppresses DNA damage-induced cell death in tumor cells. Mechanistically, based on chromatin immunoprecipitation and luciferase assays, DEC1 binds to and activates the promoter of the CLU gene. DEC1 and DNA-damaging agents induce sCLU expression, whereas DEC1 knockdown decreases the expression of sCLU upon DNA damage. Moreover, the data demonstrate that DEC1 inhibits, whereas sCLU knockdown enhances, DNA damage-induced cell death in MCF7 breast cancer cells. Given that DEC1 and sCLU are frequently overexpressed in breast cancers, these data provide mechanistic insight into DEC1 as a prosurvival factor by upregulating sCLU to reduce the DNA damage-induced apoptotic response. Together, this study reveals sCLU as a novel target of DEC1 which modulates the sensitivity of the DNA damage response.Implications: DEC1 and sCLU are frequently overexpressed in breast cancer, and targeting the sCLU-mediated cytoprotective signaling pathway may be a novel therapeutic approach. Mol Cancer Res; 16(11); 1641-51. ©2018 AACR.
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Affiliation(s)
- Xin Ming
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Chenyi Bao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Tao Hong
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Ying Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Xinbin Chen
- The Comparative Oncology Laboratory, Schools of Veterinary Medicine and Medicine, University of California at Davis, Davis, California
| | - Yong-Sam Jung
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Yingjuan Qian
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China.
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Liu Y, Liu B, Zhang GQ, Zou JF, Zou ML, Cheng ZS. Calpain inhibition attenuates bleomycin-induced pulmonary fibrosis via switching the development of epithelial-mesenchymal transition. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2018; 391:695-704. [PMID: 29666896 PMCID: PMC5994212 DOI: 10.1007/s00210-018-1499-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/05/2018] [Indexed: 11/03/2022]
Abstract
Calpains are intracellular calcium-dependent cysteine proteases, which cleave several substrates proteins, have been proven to play important roles in lung fibrosis. The aim of this study was to investigate the effects of calpain on bleomycin (BLM)-induced pulmonary fibrosis. A lung fibrosis mice model was established successfully by intraperitoneal injection of bleomycin. Calpeptin, a highly selective inhibitor of calpain activation, was administered three times weekly after bleomycin injection. Histological examination was used to assess the fibrosis. Quantitative-PCR and Western blotting were used to assess the development of epithelial-mesenchymal transition (EMT). We found calpeptin treatment decreased the BLM-induced EMT-associated markers, such as muscle actin (α-SMA) and collagen-I, while increased E-cadherin (E-cad). Calpeptin also suppressed the activation of transforming growth factor β1 (TGFβ1)-Smad2/3 signaling pathway, which plays crucial role in lung fibrosis and EMT. Furthermore, we found differentiated embryonic chondrocyte-expressed gene 1 (DEC1), an important transcription factor, was upregulated in both patients with idiopathic pulmonary fibrosis and in bleomycin-induced lung fibrosis. DEC1 was suppressed by calpeptin in bleomycin-induced mice model. Collectively, these findings indicated that calpeptin had a potential anti-fibrosis effect, which focus on the development of EMT.
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Affiliation(s)
- Yuan Liu
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China
| | - Bing Liu
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China
| | - Gu-Qin Zhang
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China
| | - Jing-Feng Zou
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China
| | - Meng-Lin Zou
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China
| | - Zhen-Shun Cheng
- Department of Respiratory, Wuhan University Zhongnan Hospital, Wuhan, 430071, China.
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Growth differentiation factor 15 contributes to marrow adipocyte remodeling in response to the growth of leukemic cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:66. [PMID: 29566722 PMCID: PMC5863796 DOI: 10.1186/s13046-018-0738-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 03/15/2018] [Indexed: 12/15/2022]
Abstract
Background The adipocyte remodeling, including of the morphological change, might indicate special pathological function. Our previous study found that the morphological remodeling of larger marrow adipocytes into small marrow adipocytes correlates with a poor prognosis for acute myeloid leukemia (AML) patients. However, the mechanisms contributed to the marrow adipocyte remodeling are still poorly understood. Methods GDF15 expression was analyzed by RT-qPCR and western blotting assays in the leukemic cells. The enhancing and antibody neutralization tests in vitro were employed to evaluate the effect of GDF15 on the morphology of mature adipocytes. CCK8 test was used to detect the proliferation of leukemic cells after co-cultivation with small marrow adipocytes. Flow cytometry was used to analysis the proportion of cell cycle of leukemic cells. Immunofluorescence staining and linear analysis were applied to verify the GDF15 expression and the relationship between GDF15 and small marrow adipocytes in AML patients. Results In this study, we found that leukemic cell lines not only expressed significantly higher growth differentiation factor 15 (GDF15) than the other three cytokines associated with adipocyte differentiation in RNA level but also secreted GDF15 factor. Furthermore, the in vitro experiments demonstrated that GDF15 was involved in the conversion of small marrow adipocytes from larger marrow adipocytes. Correspondingly, the leukemic cells proliferated more rapidly through regulating the cell cycle when co-cultured with GDF15-induced small marrow adipocytes. The immunofluorescence staining on the bone marrow sections of AML patients further exhibited that GDF15 was partly produced by leukemic cells. The positive correlation between the concentration of GDF15 in the marrow aspirates and the number and the volume of small marrow adipocytes might suggest the contribution of GDF15 in AML patients (r = 0.72, r = 0.67). Conclusions GDF15 secreted by leukemic cells was involved in the morphological remodeling of marrow adipocytes, which can in turn promote leukemic cell growth, indicating that GDF15 may be a promising treatment target for AML patients. Electronic supplementary material The online version of this article (10.1186/s13046-018-0738-y) contains supplementary material, which is available to authorized users.
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25
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Wang XP, Wang QX, Lin HP, Chang N. Anti-tumor bioactivities of curcumin on mice loaded with gastric carcinoma. Food Funct 2018; 8:3319-3326. [PMID: 28848967 DOI: 10.1039/c7fo00555e] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Curcumin, a derivative from the dried rhizome of curcuma longa, has been proven to possess anti-tumor effects. However, the detailed molecular mechanisms have not been fully elucidated. In this study, we aimed to explore the anti-tumor mechanisms of curcumin in treating gastric cancer. BALB/C mice grafted with a mouse gastric adenocarcinoma cell line (MFC) were used as the experimental model. Mice received different doses of curcumin after grafting. Tumor size was measured and tumor weight was determined after tumor inoculation. TUNEL assay and flow cytometric analysis were applied to evaluate the apoptosis of the cancer cells. Serum cytokines IFN-γ, TNF-α, granzyme B and perforin were detected by ELISA assay. The anti-tumor effect was determined using cytotoxic T-lymphocyte (CTL) assays and in vivo tumor prevention tests. The expression of DEC1, HIF-1α, STAT3 and VEGF in tumor tissues was examined by immunostaining and analyzed using an Image J analysis system. Compared with controls, tumor growth (size and weight) was significantly inhibited by curcumin treatment (P < 0.05). The apoptotic index in gastric cancer cells was significantly increased in the curcumin treatment group. Splenocyte cells from mice treated with curcumin exhibited higher cytolytic effects on MFC cancer cells than those from mice treated with saline (P < 0.01). The expression of DEC1, HIF-1α, STAT3 and VEGF in tumor tissues was down-regulated after curcumin treatment. Our results indicate that curcumin inhibits the proliferation of gastric carcinoma by inducing the apoptosis of tumor cells, activating immune cells to secrete a large amount of cytokines, and down-regulating the DEC1, HIF-1α, VEGF and STAT3 signal transduction pathways.
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Affiliation(s)
- Xiao-Ping Wang
- Laboratory of Molecular Biology & Pathology, Shaanxi University of Chinese Medicine, Xianyang, PR China.
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Ning R, Zhan Y, He S, Hu J, Zhu Z, Hu G, Yan B, Yang J, Liu W. Interleukin-6 Induces DEC1, Promotes DEC1 Interaction with RXRα and Suppresses the Expression of PXR, CAR and Their Target Genes. Front Pharmacol 2017; 8:866. [PMID: 29234281 PMCID: PMC5712319 DOI: 10.3389/fphar.2017.00866] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 11/09/2017] [Indexed: 12/17/2022] Open
Abstract
Inflammatory burden is a primary cellular event in many liver diseases, and the overall capacity of drug elimination is decreased. PXR (pregnane X receptor) and CAR (constitutive androstane receptor) are two master regulators of genes encoding drug-metabolizing enzymes and transporters. DEC1 (differentiated embryonic chondrocyte-expressed gene 1) is a ligand-independent transcription factor and reportedly is induced by many inflammatory cytokines including IL-6. In this study, we used primary hepatocytes (human and mouse) as well as HepG2 cell line and demonstrated that IL-6 increased DEC1 expression and decreased the expressions of PXR, CAR, and their target genes. Overexpression of DEC1 had similar effect as IL-6 on the expression of these genes, and knockdown of DEC1 reversed their downregulation by IL-6. Interestingly, neither IL-6 nor DEC1 altered the expression of RXRα, a common dimerization partner for many nuclear receptors including PXR and CAR. Instead, DEC1 was found to interact with RXRα and IL-6 enhanced the interaction. These results conclude that DEC1 uses diverse mechanisms of action and supports IL-6 downregulation of drug-elimination genes and their regulators.
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Affiliation(s)
- Rui Ning
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Yunran Zhan
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Shuangcheng He
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Jinhua Hu
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Zhu Zhu
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Gang Hu
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Bingfang Yan
- Pharmaceutical Sciences, Center for Pharmacogenomics and Molecular Therapy, University of Rhode Island, Kingston, RI, United States
| | - Jian Yang
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
| | - Wei Liu
- Department of Pharmacology, Nanjing Medical University, Nanjing, China
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Zhu Z, Wang Y, Ge D, Lu M, Liu W, Xiong J, Hu G, Li X, Yang J. Downregulation of DEC1 contributes to the neurotoxicity induced by MPP + by suppressing PI3K/Akt/GSK3β pathway. CNS Neurosci Ther 2017; 23:736-747. [PMID: 28734031 PMCID: PMC6492752 DOI: 10.1111/cns.12717] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 01/20/2023] Open
Abstract
AIM Differentiated embryonic chondrocyte gene 1 (DEC1) is involved in the neuronal differentiation and development. The aim of this study is to investigate the role of DEC1 in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPP+ )-induced PD model. METHODS The location of DEC1 and tyrosine hydroxylase (TH)-positive neurons were detected by immunofluorescence. 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse subacute model of PD was established to evaluate the change of DEC1 expression in midbrain. Then, SH-SY5Y cells were used to investigate the role of DEC1 in MPP+ -induced neurotoxicity. RESULTS We showed that the co-expressed DEC1 and TH neurons took up more than 80% of the expressed TH neurons in the midbrain of mice. DEC1/TH double-positive neurons decreased by 40.6% in SNpc and 28.8% in VTA of MPTP-injured mice. Consistently, DEC1, TH and dopamine transporter (DAT) expression decreased in the midbrain of MPTP mice. In SY-SY5Y cells, MPP+ significantly suppressed DEC1 expression and increased the cleaved caspase 3/caspase 3 and Bax/Bcl-2. DEC1 overexpression relieved, whereas DEC1 knockdown aggravated MPP+ -induced cytotoxicity. Likewise, DEC1 overexpression and knockdown inversely regulated the expression of β-catenin and PI3Kp110α (PIK3CA), an essential role in Wnt/β-catenin and PI3K/Akt signaling pathways. Interestingly, LY294002, an inhibitor of PI3K/Akt signaling, aggravated, whereas LiCl, an activator of Wnt/β-catenin signaling, abolished the reduction in DEC1 by MPP+ . It is established that these two pathways are interconnected by the phosphorylation status of GSK3β. DEC1 overexpression increased but MPP+ and DEC1 knockdown decreased GSK3β phosphorylation. CONCLUSION Downregulation of DEC1 contributes to MPP+ -induced neurotoxicity by suppressing PI3K/Akt/GSK3β pathway.
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Affiliation(s)
- Zhu Zhu
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Yu‐Wen Wang
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Ding‐Hao Ge
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Ming Lu
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Wei Liu
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Jing Xiong
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Gang Hu
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Xiao‐Ping Li
- Department of pharmacologyNanjing Medical UniversityNanjingChina
| | - Jian Yang
- Department of pharmacologyNanjing Medical UniversityNanjingChina
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Castellini L, Moon EJ, Razorenova OV, Krieg AJ, von Eyben R, Giaccia AJ. KDM4B/JMJD2B is a p53 target gene that modulates the amplitude of p53 response after DNA damage. Nucleic Acids Res 2017; 45:3674-3692. [PMID: 28073943 PMCID: PMC5397198 DOI: 10.1093/nar/gkw1281] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 12/12/2016] [Indexed: 12/14/2022] Open
Abstract
The p53 tumor suppressor protein plays a critical role in orchestrating the genomic response to various stress signals by acting as a master transcriptional regulator. Differential gene activity is controlled by transcription factors but also dependent on the underlying chromatin structure, especially on covalent histone modifications. After screening different histone lysine methyltransferases and demethylases, we identified JMJD2B/KDM4B as a p53-inducible gene in response to DNA damage. p53 directly regulates JMJD2B gene expression by binding to a canonical p53-consensus motif in the JMJD2B promoter. JMJD2B induction attenuates the transcription of key p53 transcriptional targets including p21, PIG3 and PUMA, and this modulation is dependent on the catalytic capacity of JMJD2B. Conversely, JMJD2B silencing led to an enhancement of the DNA-damage driven induction of p21 and PIG3. These findings indicate that JMJD2B acts in an auto-regulatory loop by which p53, through JMJD2B activation, is able to influence its own transcriptional program. Functionally, exogenous expression of JMJD2B enhanced subcutaneous tumor growth of colon cancer cells in a p53-dependent manner, and genetic inhibition of JMJD2B impaired tumor growth in vivo. These studies provide new insights into the regulatory effect exerted by JMJD2B on tumor growth through the modulation of p53 target genes.
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Affiliation(s)
- Laura Castellini
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Eui Jung Moon
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Olga V Razorenova
- Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA 92697, USA
| | - Adam J Krieg
- Department of Obstetrics and Gynecology, Oregon Health and Sciences University, Portland, OR 97239, USA
| | - Rie von Eyben
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Amato J Giaccia
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA
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Chu YW, Liu ST, Yang YL, Huang SM, Wang WM. The cytotoxic mechanism of epigallocatechin gallate on proliferative HaCaT keratinocytes. J Biomed Sci 2017; 24:55. [PMID: 28810862 PMCID: PMC5556358 DOI: 10.1186/s12929-017-0363-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/09/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Epigallocatechin gallate (EGCG) is the major ingredient of sinecatechins ointment, approved for the treatment of external genital and perianal warts. However, the molecular mechanism for EGCG's effect on warts resulting from the human papillomavirus (HPV) infection of keratinocytes is not well understood. HPV may survive in proliferative keratinocytes and may be involved in cell cycle regulation and progression. The objective of this study was to investigate the mechanism underlying EGCG's treatment on external genital warts of HPV infection through the cultured keratinocyte cells from the HaCaT cell line. METHODS MTT and flow cytometry assays were used to measure cell viability and the cell cycle profile, with and without EGCG treatment, for HaCaT keratinocyte cells cultured in a calcium-free medium and 1.8 mM calcium which induced proliferative and differentiated keratinocytes, respectively, for 24 h. The expression levels of cytotoxic proteins and factors were evaluated with the RT-PCR and western blotting analysis. RESULTS EGCG influenced the proliferation stage but not the differentiation stage of keratinocytes. We suggest that apoptosis and autophagy might be the possible mechanism for the EGCG's effect on the proliferative HaCaT cells. Furthermore, we found that EGCG reduced the protein levels of cyclin D1 and Zac1 (a zinc-finger protein which regulates apoptosis and cell cycle arrest 1) dose-dependently in proliferative as compared to differentiated keratinocytes. It also induced the expression of p21 and DEC1 (differentiated embryo-chondrocyte expressed gene 1), and promoted G1 arrest of cell cycle in proliferative keratinocytes. CONCLUSIONS These results help clarify the mechanisms of EGCG treatment of HPV-infected keratinocytes and may contribute to new targets, such as Zac1 and DEC1 for external genital and perianal warts.
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Affiliation(s)
- Yu-Wen Chu
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China.,Department of Pharmacy, Taichung Veterans General Hospital, Taichung, 407, Taiwan, Republic of China
| | - Shu-Ting Liu
- Department of Biochemistry, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China
| | - Ya-Lan Yang
- Department of Biochemistry, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China
| | - Shih-Ming Huang
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China. .,Department of Biochemistry, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China.
| | - Wei-Ming Wang
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China. .,Department of Dermatology, Tri-Service General Hospital, National Defense Medical Center, Taipei, 114, Taiwan, Republic of China.
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30
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Li YL, Chang JT, Lee LY, Fan KH, Lu YC, Li YC, Chiang CH, You GR, Chen HY, Cheng AJ. GDF15 contributes to radioresistance and cancer stemness of head and neck cancer by regulating cellular reactive oxygen species via a SMAD-associated signaling pathway. Oncotarget 2017; 8:1508-1528. [PMID: 27903972 PMCID: PMC5352073 DOI: 10.18632/oncotarget.13649] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/12/2016] [Indexed: 12/22/2022] Open
Abstract
Radiotherapy is an integral part for the treatment of head and neck cancer (HNC), while radioresistance is a major cause leads to treatment failure. GDF15, a member of the TGF-β superfamily, is hypothesized to participate in various types of homeostasis. However, the potential role of this molecule in regulation of radiosensitivity remains unclear. In this study, we demonstrated that GDF15 contributed to radioresistance of HNC, as determined by both gain- and lost-of-functional experiments. These results were achieved by the induction of mitochondrial membrane potential and suppression of intracellular reactive oxygen species (ROS). We further showed that GDF15 facilitated the conversion of cancer stemness, as assessed by the promotion of CD44+ and ALDH1+ cell populations and spheroid cell formation. At molecular level, GDF15 conferred to these cellular functions was through phosphorylated SMAD1 proteins to elite downstream signaling molecules. These cellular results were further confirmed in a tumor xenograft mouse study. Taken together, our results demonstrated that GDF15 contributed to radioresistance and cancer stemness by regulating cellular ROS levels via a SMAD-associated signaling pathway. GDF15 may serve as a prediction marker of radioresistance and a therapeutic target for the development of radio-sensitizing agents for the treatment of refractory HNC.
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Affiliation(s)
- Yan-Liang Li
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Joseph T. Chang
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Li-Yu Lee
- Department of Pathology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Kang-Hsing Fan
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Ya-Ching Lu
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Yi-Chen Li
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Chang-Hsu Chiang
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Guo-Rung You
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Hsin-Ying Chen
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Ann-Joy Cheng
- Department of Medical Biotechnology, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
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Li XM, Lin W, Wang J, Zhang W, Yin AA, Huang Y, Zhang J, Yao L, Bian H, Zhang J, Zhang X. Dec1 expression predicts prognosis and the response to temozolomide chemotherapy in patients with glioma. Mol Med Rep 2016; 14:5626-5636. [PMID: 27840944 DOI: 10.3892/mmr.2016.5921] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 09/06/2016] [Indexed: 11/06/2022] Open
Abstract
Differentiated embryo chondrocyte expressed gene 1 (Dec1), a crucial cell differentiation mediator and apoptosis inhibitor, is abundantly expressed in various types of human cancer and is associated with malignant tumor progression. As poor differentiation and low apoptosis are closely associated with poor survival rates and a poor response to radio/chemotherapy in patients with cancer, the prognostic value of Dec1 expression was examined in the present study and its correlation with response to temozolomide (TMZ) chemotherapy was analyzed in patients with glioma. Dec1 expression was analyzed by immunohistochemistry in 157 samples of newly diagnosed glioma and 63 recurrent glioblastoma cases that relapsed during TMZ chemotherapy. Correlations with clinical variables, prognosis and the response to TMZ chemotherapy were analyzed in the newly diagnosed gliomas. Dec1 expression was also compared with the apoptosis index determined by TdT‑mediated dUTP nick ending‑labeling assay in recurrent glioblastomas. The antiglioma effect of TMZ in nude mice xenografts with Dec1 expression was examined in vivo. High expression of Dec1, which was significantly associated with high pathological tumor grade and poor response to TMZ chemotherapy, was demonstrated to be an unfavorable independent prognostic factor and predicted poor survival in patients with newly diagnosed glioma. In patients with recurrent glioblastoma, there was a negative correlation between Dec1 expression and the apoptotic index. In nude mice treated with TMZ, Dec1 overexpression potentiated proliferation, but attenuated TMZ‑induced apoptosis. In conclusion, Dec1 is a prognostic factor for the clinical outcome and a predictive factor for the response to TMZ chemotherapy in patients with glioma.
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Affiliation(s)
- Xiao-Ming Li
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wei Lin
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jiang Wang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wei Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - An-An Yin
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yi Huang
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jian Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Center of Teaching Experiment, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Libo Yao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Center of Teaching Experiment, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Huan Bian
- Cadet Brigade Team Three, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jing Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Center of Teaching Experiment, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xiang Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Struebing FL, Lee RK, Williams RW, Geisert EE. Genetic Networks in Mouse Retinal Ganglion Cells. Front Genet 2016; 7:169. [PMID: 27733864 PMCID: PMC5039302 DOI: 10.3389/fgene.2016.00169] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/06/2016] [Indexed: 01/17/2023] Open
Abstract
Retinal ganglion cells (RGCs) are the output neuron of the eye, transmitting visual information from the retina through the optic nerve to the brain. The importance of RGCs for vision is demonstrated in blinding diseases where RGCs are lost, such as in glaucoma or after optic nerve injury. In the present study, we hypothesize that normal RGC function is transcriptionally regulated. To test our hypothesis, we examine large retinal expression microarray datasets from recombinant inbred mouse strains in GeneNetwork and define transcriptional networks of RGCs and their subtypes. Two major and functionally distinct transcriptional networks centering around Thy1 and Tubb3 (Class III beta-tubulin) were identified. Each network is independently regulated and modulated by unique genomic loci. Meta-analysis of publically available data confirms that RGC subtypes are differentially susceptible to death, with alpha-RGCs and intrinsically photosensitive RGCs (ipRGCs) being less sensitive to cell death than other RGC subtypes in a mouse model of glaucoma.
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Affiliation(s)
- Felix L Struebing
- Department of Ophthalmology, Emory University School of Medicine Atlanta, GA, USA
| | - Richard K Lee
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine Miami, FL, USA
| | - Robert W Williams
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center Memphis, TN, USA
| | - Eldon E Geisert
- Department of Ophthalmology, Emory University School of Medicine Atlanta, GA, USA
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Wang J, Li W, Wang Y, Li C, Ding M, Zhang H, Lai M. The H6D genetic variation of GDF15 is associated with genesis, progress and prognosis in colorectal cancer. Pathol Res Pract 2015; 211:845-50. [PMID: 26365480 DOI: 10.1016/j.prp.2015.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/09/2015] [Accepted: 08/14/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND Growth differentiation factor 15 (GDF15) plays important roles in the carcinogenesis of many types of tumors. The aim of this study was to investigate whether H6D polymorphism is contributed to the genesis, progress and prognosis of colorectal cancer (CRC) in Chinese population. METHODS Pyrosequencing was used to determine the H6D genotypes. The relationship between the genotypes and clinical characteristics was analyzed. RESULTS The frequency of CG+GG genotype in the GDF15 H6D polymorphism was significantly increased in CRC patients when compared with controls [odds ratio (OR), 1.543; 95% confidence interval (95% CI), 1.138-2.094, P=0.005]. We also found that the patients with CG+GG genotype had an increased risk of death from colon cancer than those carrying homozygote CC [hazard ratio (HR), 2.472; 95% CI, 1.172-5.214; P=0.017] and the patients with CG+GG genotype of colon cancer also have a positive correlation with distant metastasis than those carrying homozygote CC (χ(2)=4.087, P=0.043). For the first time, H6D was also identified as somatic mutation when compared the H6D genotype in tumor tissues and their matched normal tissues, and the mutation rate is 7.2%. The male CRC patients with the H6D mutation were susceptible to distant metastasis (P=0.028, χ(2)=4.820) and had a relatively poor prognosis. CONCLUSION Our results suggest that the H6D genetic variant may be considered as a biomarker of tumorgenesis, metastasis and prognosis in colorectal cancer in Chinese population.
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Affiliation(s)
- Jingyu Wang
- Department of Pathology, School of Medicine, Zhejiang University, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang, PR China; Department of Pathology, the First Hospital of Jiaxing, Zhejiang, PR China.
| | - Wenfeng Li
- Department of Chemoradiotherapy, the First Affiliated Hospital of Wenzhou Medical University, Zhejiang, PR China.
| | - Yuqi Wang
- Department of Pathology, School of Medicine, Zhejiang University, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang, PR China.
| | - Chen Li
- Department of Pathology, School of Medicine, Zhejiang University, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang, PR China.
| | - Meiman Ding
- The Criminal Investigation Detachment of Jiaxing Public Security Bureau, Zhejiang, PR China.
| | - Honghe Zhang
- Department of Pathology, School of Medicine, Zhejiang University, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang, PR China.
| | - Maode Lai
- Department of Pathology, School of Medicine, Zhejiang University, Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang, PR China.
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Comparative Analysis of Whole-Genome Gene Expression Changes in Cultured Human Embryonic Stem Cells in Response to Low, Clinical Diagnostic Relevant, and High Doses of Ionizing Radiation Exposure. Int J Mol Sci 2015; 16:14737-48. [PMID: 26133243 PMCID: PMC4519869 DOI: 10.3390/ijms160714737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Revised: 05/23/2015] [Accepted: 06/26/2015] [Indexed: 11/16/2022] Open
Abstract
The biological effects of low-dose ionizing radiation (LDIR) exposure in humans are not comprehensively understood, generating a high degree of controversy in published literature. The earliest stages of human development are known to be among the most sensitive to stress exposures, especially genotoxic stresses. However, the risks stemming from exposure to LDIR, particularly within the clinical diagnostic relevant dose range, have not been directly evaluated in human embryonic stem cells (hESCs). Here, we describe the dynamics of the whole genome transcriptional responses of different hESC lines to both LDIR and, as a reference, high-dose IR (HDIR). We found that even doses as low as 0.05 Gy could trigger statistically significant transient changes in a rather limited subset of genes in all hESCs lines examined. Gene expression signatures of hESCs exposed to IR appear to be highly dose-, time-, and cell line-dependent. We identified 50 genes constituting consensus gene expression signature as an early response to HDIR across all lines of hESC examined. We observed substantial differences in biological pathways affected by either LDIR or HDIR in hESCs, suggesting that the molecular mechanisms underpinning the responses of hESC may fundamentally differ depending on radiation doses.
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Liu X, Chi X, Gong Q, Gao L, Niu Y, Chi X, Cheng M, Si Y, Wang M, Zhong J, Niu J, Yang W. Association of serum level of growth differentiation factor 15 with liver cirrhosis and hepatocellular carcinoma. PLoS One 2015; 10:e0127518. [PMID: 25996938 PMCID: PMC4440744 DOI: 10.1371/journal.pone.0127518] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 04/15/2015] [Indexed: 02/08/2023] Open
Abstract
Hepatocellular carcinoma (HCC) and liver cirrhosis are associated with high mortality worldwide. Currently, alpha-fetoprotein (AFP) is used as a standard serum marker for the detection of HCC, but its sensitivity and specificity are unsatisfactory, and optimal diagnostic markers for cirrhosis are lacking. We previously reported that growth differentiation factor 15 (GDF15) was significantly induced in HCV-infected hepatocytes. This study aimed to investigate GDF15 expression and its correlation with hepatitis virus-related liver diseases. A total of 412 patients with various liver diseases were studied. Healthy and Mycobacterium tuberculosis-infected subjects were included as controls. Serum and tissue GDF15 levels were measured. Serum GDF15 levels were significantly increased in patients with HCC (6.66±0.67 ng/mL, p<0.0001) and cirrhosis (6.51±1.47 ng/mL, p<0.0001) compared with healthy controls (0.31±0.01 ng/mL), though the GDF15 levels in HBV and HCV carriers were moderately elevated (1.34±0.19 ng/mL and 2.13±0.53 ng/mL, respectively). Compared with HBV or HCV carriers, GDF15 had a sensitivity of 63.1% and a specificity of 86.6% at the optimal cut-off point of 2.463 ng/mL in patients with liver cirrhosis or HCC. In HCC patients, the area under the receiver operating curve was 0.84 for GDF15 and 0.76 for AFP, but 0.91 for the combined GDF15 and AFP. Serum GDF15 levels did not significantly differ between the high-AFP and low-AFP groups. GDF15 protein expression in HCC was significantly higher than that in the corresponding adjacent paracarcinomatous tissue and normal liver. Using a combination of GDF15 and AFP will improve the sensitivity and specificity of HCC diagnosis. Further research and the clinical implementation of serum GDF15 measurement as a biomarker for HCC and cirrhosis are recommended.
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Affiliation(s)
- Xiuying Liu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiumei Chi
- First Hospital, Jilin University, Changchun, China
| | - Qiaoling Gong
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Lei Gao
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yuqiang Niu
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiaojing Chi
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Min Cheng
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Youhui Si
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Maorong Wang
- Liver Disease Center of PLA, the 81st Hospital of PLA, Nanjing, China
| | - Jin Zhong
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
- * E-mail: (WY); (JN); (JZ)
| | - Junqi Niu
- First Hospital, Jilin University, Changchun, China
- * E-mail: (WY); (JN); (JZ)
| | - Wei Yang
- MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
- * E-mail: (WY); (JN); (JZ)
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Hu S, Shang W, Yue H, Chen R, Dong Z, Hu J, Mao Z, Yang J. Differentiated embryonic chondrocytes 1 expression of periodontal ligament tissue and gingival tissue in the patients with chronic periodontitis. Arch Oral Biol 2014; 60:517-25. [PMID: 25575296 DOI: 10.1016/j.archoralbio.2014.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 10/20/2014] [Accepted: 12/08/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To evaluate the DEC1 expression of periodontal ligament tissue and gingival tissue in the patients with chronic periodontitis. METHODS 20 non-smoking patients with chronic periodontitis and 20 healthy individuals were enrolled. Periodontal ligament tissue and gingival tissue samples from healthy subjects were collected during teeth extraction for orthodontic reason or the third molar extraction. The parallel samples from patients with chronic periodontitis were obtained during periodontal flap operations or teeth extraction as part of periodontal treatment. The DEC1 expression and the alkaline phosphatase (ALP) activity of both the periodontal ligament tissue and gingival tissue were determined by Western blot, Immunohistochemistry and ALP Detection Kit. RESULTS The DEC1 expression of periodontal ligament tissue in the patients with chronic periodontitis decreased significantly along with the decreased ALP activity. On the contrary, the DEC1 expression of gingival tissue in the patients with chronic periodontitis increased significantly. Further study found that the DEC1 expression of gingival tissue increased mainly in the suprabasal layer of gingival epithelial cells but decreased in the gingival connective tissue of the patients with chronic periodontitis. CONCLUSION The DEC1 expression decreases in the periodontal ligament tissue which is related to the osteogenic capacity, whereas the DEC1 expression increases in the suprabasal layer of gingival epithelial cells which are involved in immune inflammatory response in the patients with chronic periodontitis. The findings provide a new target to explore the pathology and the therapy of periodontitis.
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Affiliation(s)
- Shenlin Hu
- Department of Stomatology, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Wei Shang
- Department of Pharmacology, Nanjing Medicine University, Nanjing, China
| | - Haitao Yue
- Department of Pharmacology, Nanjing Medicine University, Nanjing, China
| | - Ruini Chen
- Department of Pharmacology, Nanjing Medicine University, Nanjing, China
| | - Zheng Dong
- Department of Stomatology, Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Jinhua Hu
- Department of Pharmacology, Nanjing Medicine University, Nanjing, China
| | - Zhao Mao
- Department of Stomatology, Jinling Hospital, Nanjing Medical University, Nanjing, China.
| | - Jian Yang
- Department of Pharmacology, Nanjing Medicine University, Nanjing, China.
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USP17- and SCFβTrCP--regulated degradation of DEC1 controls the DNA damage response. Mol Cell Biol 2014; 34:4177-85. [PMID: 25202122 DOI: 10.1128/mcb.00530-14] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In response to genotoxic stress, DNA damage checkpoints maintain the integrity of the genome by delaying cell cycle progression to allow for DNA repair. Here we show that the degradation of the basic helix-loop-helix (bHLH) transcription factor DEC1, a critical regulator of cell fate and circadian rhythms, controls the DNA damage response. During unperturbed cell cycles, DEC1 is a highly unstable protein that is targeted for proteasome-dependent degradation by the SCF(βTrCP) ubiquitin ligase in cooperation with CK1. Upon DNA damage, DEC1 is rapidly induced in an ATM/ATR-dependent manner. DEC1 induction results from protein stabilization via a mechanism that requires the USP17 ubiquitin protease. USP17 binds and deubiquitylates DEC1, markedly extending its half-life. Subsequently, during checkpoint recovery, DEC1 proteolysis is reestablished through βTrCP-dependent ubiquitylation. Expression of a degradation-resistant DEC1 mutant prevents checkpoint recovery by inhibiting the downregulation of p53. These results indicate that the regulated degradation of DEC1 is a key factor controlling the DNA damage response.
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DEC1 coordinates with HDAC8 to differentially regulate TAp73 and ΔNp73 expression. PLoS One 2014; 9:e84015. [PMID: 24404147 PMCID: PMC3880278 DOI: 10.1371/journal.pone.0084015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 11/11/2013] [Indexed: 01/21/2023] Open
Abstract
P73, a member of the p53 family, plays a critical role in neural development and tumorigenesis. Due to the usage of two different promoters, p73 is expressed as two major isoforms, TAp73 and ΔNp73, often with opposing functions. Here, we reported that transcriptional factor DEC1, a target of the p53 family, exerts a distinct control of TAp73 and ΔNp73 expression. In particular, we showed that DEC1 was able to increase TAp73 expression via transcriptional activation of the TAp73 promoter. By contrast, Np73 transcription was inhibited by DEC1 via transcriptional repression of the ΔNp73 promoter. To further explore the underlying mechanism, we showed that DEC1 was unable to increase TAp73 expression in the absence of HDAC8, suggesting that HDAC8 is required for DEC1 to enhance TAp73 expression. Furthermore, we found that DEC1 was able to interact with HDAC8 and recruit HDAC8 to the TAp73, but not the ΔNp73, promoter. Together, our data provide evidence that DEC1 and HDAC8 in differentially regulate TAp73 and ΔNp73 expression, suggesting that this regulation may lay a foundation for a therapeutic strategy to enhance the chemosensitivity of tumor cells.
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Kato Y, Kawamoto T, Fujimoto K, Noshiro M. DEC1/STRA13/SHARP2 and DEC2/SHARP1 coordinate physiological processes, including circadian rhythms in response to environmental stimuli. Curr Top Dev Biol 2014; 110:339-72. [PMID: 25248482 DOI: 10.1016/b978-0-12-405943-6.00010-5] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Daily physiological and behavioral rhythms are regulated by endogenous circadian molecular clocks. Clock proteins DEC1 (BHLHe40) and DEC2 (BHLHe41) belong to the basic helix-loop-helix protein superfamily, which contains other clock proteins CLOCK and BMAL1. DEC1 and DEC2 are induced by CLOCK:BMAL1 heterodimer via the CACGTG E-box in the promoter and, thereafter, suppress their own expression by competing with CLOCK:BMAL1 for the DNA binding. This negative feedback DEC loop together with the PER loop involving PER and CRY, the other negative clock regulators, maintains the circadian rhythm of Dec1 and Dec2 expression. DEC1 is induced by light pulse and adjusts the circadian phase of the central clock in the suprachiasmatic nucleus, whereas DEC1 upregulation by TGF-β resets the circadian phase of the peripheral clocks in tissues. Furthermore, DEC1 and DEC2 modulate the clock output signals to control circadian rhythms in behavior and metabolism. In addition to the functions in the clocks, DEC1 and DEC2 are involved in hypoxia responses, immunological reactions, and carcinogenesis. These DEC actions are mediated by the direct binding to the E-box elements in target genes or by protein-protein interactions with transcription factors such as HIF-1α, RXRα, MyoD, and STAT. Notably, numerous growth factors, hormones, and cytokines, along with ionizing radiation and DNA-damaging agents, induce Dec1 and/or Dec2 in a tissue-specific manner. These findings suggest that DEC1 and DEC2 play a critical role in animal adaptation to various environmental stimuli.
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Affiliation(s)
- Yukio Kato
- Department of Dental and Medical Biochemistry, Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Takeshi Kawamoto
- Department of Dental and Medical Biochemistry, Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Katsumi Fujimoto
- Department of Dental and Medical Biochemistry, Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mitsuhide Noshiro
- Department of Dental and Medical Biochemistry, Basic Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Ow JR, Tan YH, Jin Y, Bahirvani AG, Taneja R. Stra13 and Sharp-1, the Non-Grouchy Regulators of Development and Disease. Curr Top Dev Biol 2014; 110:317-38. [DOI: 10.1016/b978-0-12-405943-6.00009-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Yin T, Cho SJ, Chen X. RNPC1, an RNA-binding protein and a p53 target, regulates macrophage inhibitory cytokine-1 (MIC-1) expression through mRNA stability. J Biol Chem 2013; 288:23680-6. [PMID: 23836903 DOI: 10.1074/jbc.m113.480186] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Macrophage inhibitory cytokine-1 (MIC-1), a secreted cytokine, is a direct target of p53 and known to play a role in cell proliferation, apoptosis, cell metastasis, and angiogenesis through autocrine and paracrine signaling. Previous studies have shown that serum levels of MIC-1 closely parallel cancer progression and are being explored as a diagnostic tool. MIC-1 has also shown potential as a therapeutic agent as it has exhibited several anti-carcinogenic activities. Thus, MIC-1 displays two opposing effects: tumor suppression versus promotion. However, it remains unclear whether MIC-1 is regulated by a mechanism other than transcription and how MIC-1 exerts its tumor suppression. In this study, we show that overexpression of RNA-binding protein RNPC1 can increase, whereas knockdown or knock-out of RNPC1 decreases, MIC-1 transcript and protein levels. Additionally, we demonstrate that RNPC1 can bind to MIC-1 mRNA via an AU-rich element within MIC-1 3'-UTR and then enhances MIC-1 mRNA stability. Finally, to explore the functional significance of MIC-1, we showed that knockdown of MIC-1 can decrease RNPC1-induced cell growth suppression. Altogether, we uncover a novel mechanism by which MIC-1 can be regulated through RNPC1 via mRNA stability.
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Affiliation(s)
- Tiffany Yin
- Comparative Oncology Laboratory, University of California, Davis, California 95616, USA
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Qian Y, Jung YS, Chen X. DEC1 and MIC-1: new players of p53-dependent cell fate decision. Cell Cycle 2012; 11:3525-6. [PMID: 22935706 PMCID: PMC3478296 DOI: 10.4161/cc.21962] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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Berger CE, Qian Y, Liu G, Chen H, Chen X. p53, a target of estrogen receptor (ER) α, modulates DNA damage-induced growth suppression in ER-positive breast cancer cells. J Biol Chem 2012; 287:30117-27. [PMID: 22787161 DOI: 10.1074/jbc.m112.367326] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In response to genotoxic stress, the p53 tumor suppressor induces target genes for cell cycle arrest, apoptosis, and DNA repair. Although p53 is the most commonly mutated gene in all human cancers, it is only mutated in about 20% of breast cancers. 70% of all breast cancer cases are estrogen receptor (ER)-positive and express ERα. ER-positive breast cancer generally indicates good patient prognosis and treatment responsiveness with antiestrogens, such as tamoxifen. However, ER-positive breast cancer patients can experience loss or a reduction in ERα, which is associated with aggressive tumor growth, increased invasiveness, poor prognosis, and loss of p53 function. Consistent with this, we found that p53 is a target gene of ERα. Specifically, we found that knockdown of ERα decreases expression of p53 and its downstream targets, MDM2 and p21. In addition, we found that ERα activates p53 transcription via binding to estrogen response element half-sites within the p53 promoter. Moreover, we found that loss of ERα desensitizes, whereas ectopic expression of ERα sensitizes, breast cancer cells to DNA damage-induced growth suppression in a p53-dependent manner. Altogether, this study provides an insight into a feedback loop between ERα and p53 and a biological role of p53 in the DNA damage response in ER-positive breast cancers.
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Affiliation(s)
- Crystal E Berger
- Comparative Oncology Laboratory, University of California, Davis, CA 95616, USA
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