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Gui LK, Liu HJ, Jin LJ, Peng XC. Krüpple-like factors in cardiomyopathy: emerging player and therapeutic opportunities. Front Cardiovasc Med 2024; 11:1342173. [PMID: 38516000 PMCID: PMC10955087 DOI: 10.3389/fcvm.2024.1342173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 02/23/2024] [Indexed: 03/23/2024] Open
Abstract
Cardiomyopathy, a heterogeneous pathological condition characterized by changes in cardiac structure or function, represents a significant risk factor for the prevalence and mortality of cardiovascular disease (CVD). Research conducted over the years has led to the modification of definition and classification of cardiomyopathy. Herein, we reviewed seven of the most common types of cardiomyopathies, including Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC), diabetic cardiomyopathy, Dilated Cardiomyopathy (DCM), desmin-associated cardiomyopathy, Hypertrophic Cardiomyopathy (HCM), Ischemic Cardiomyopathy (ICM), and obesity cardiomyopathy, focusing on their definitions, epidemiology, and influencing factors. Cardiomyopathies manifest in various ways ranging from microscopic alterations in cardiomyocytes, to tissue hypoperfusion, cardiac failure, and arrhythmias caused by electrical conduction abnormalities. As pleiotropic Transcription Factors (TFs), the Krüppel-Like Factors (KLFs), a family of zinc finger proteins, are involved in regulating the setting and development of cardiomyopathies, and play critical roles in associated biological processes, including Oxidative Stress (OS), inflammatory reactions, myocardial hypertrophy and fibrosis, and cellular autophagy and apoptosis, particularly in diabetic cardiomyopathy. However, research into KLFs in cardiomyopathy is still in its early stages, and the pathophysiologic mechanisms of some KLF members in various types of cardiomyopathies remain unclear. This article reviews the roles and recent research advances in KLFs, specifically those targeting and regulating several cardiomyopathy-associated processes.
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Affiliation(s)
- Le-Kun Gui
- Department of Cardiology, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei, China
- School of Medicine, Yangtze University, Jingzhou, Hubei, China
| | - Huang-Jun Liu
- Department of Cardiology, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei, China
| | - Li-Jun Jin
- Department of Cardiology, The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei, China
| | - Xiao-Chun Peng
- Department of Pathophysiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, Hubei, China
- Laboratory of Oncology, School of Basic Medicine, Center for Molecular Medicine, Health Science Center, Yangtze University, Jingzhou, Hubei, China
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Zhou ZQ, Lv X, Liu SB, Qu HC, Xie QP, Sun LF, Li G. The induction of ferroptosis by KLF11/NCOA4 axis: the inhibitory role in clear cell renal cell carcinoma. Hum Cell 2023; 36:2162-2178. [PMID: 37642832 DOI: 10.1007/s13577-023-00973-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Ferroptosis is a form of cell death and has great potential application in the treatment of many cancers, including clear cell renal cell carcinoma (ccRCC). Herein, we identified the essential roles of Krüppel-like factor 11 (KLF11) in suppressing the progression of ccRCC. By analyzing mRNA expression data from the Gene Expression Omnibus (GEO) database, we found that KLF11 was a significantly downregulated gene in ccRCC tissues. The results of subsequent functional assays verified that KLF11 played an antiproliferative role in ccRCC cells and xenograft tumors. Furthermore, gene set enrichment analysis indicated that ferroptosis was involved in ccRCC development, and correlation analysis revealed that KLF11 was positively related to ferroptosis drivers. We also found that KLF11 promoted ferroptosis in ccRCC by downregulating the protein expression of ferritin, system xc (-) cystine/glutamate antiporter (xCT), and glutathione peroxidase 4 (GPX4), acting as the inhibitory factors of ferroptosis and increasing the intracellular levels of lipid reactive oxygen species (ROS). As a transcriptional regulator, KLF11 significantly increased the promoter activity of nuclear receptor coactivator 4 (NCOA4), a gene significantly downregulated in ccRCC and whose low expression is associated with poor survival. The characteristics of ccRCC cells caused by KLF11 overexpression were reversed after NCOA4 silencing. In summary, the present study suggests that KLF11 suppresses the progression of ccRCC by increasing NCOA4 transcription. Therefore, the KLF11/NCOA4 axis may serve as a novel therapeutic target for human ccRCC.
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Affiliation(s)
- Zi-Qi Zhou
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Xi Lv
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Shi-Bo Liu
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Hong-Chen Qu
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Qing-Peng Xie
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Long-Feng Sun
- Department of Geriatric Cardiology, The First Hospital of China Medical University, No. 155, Nanjing North Street, Shenyang, Liaoning Province, China.
| | - Gang Li
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China.
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Lin L, Pfender K, Ditsch N, Kuhn C, Rahmeh M, Peng L, Schmoeckel E, Mayr D, Trillsch F, Mahner S, Kessler M, Jeschke U, Hester A. KLF11 is an independent negative prognostic factor for breast cancer from a cohort study and induces proliferation and inhibits apoptosis in vitro. Breast Cancer 2023; 30:758-771. [PMID: 37199905 PMCID: PMC10404175 DOI: 10.1007/s12282-023-01470-5] [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: 07/13/2022] [Accepted: 05/10/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND The therapy concepts that target several members of krüppel like factor (KLF) family have been achieved in breast cancer (BC). However, the role of KLF11 in BC remains unclear. This study explored the prognostic significance of KLF11 in BC patients and investigated its functional roles in this malignancy. METHODS Immunohistochemistry (IHC) staining of KLF11 in 298 patients' samples was performed to determine the prognostic role of the KLF11. Then the protein level was correlated to clinicopathological characteristics and survival outcomes. Afterward, the function of KLF11 was explored in vitro with siRNA-mediated loss-of-function of cell viability, proliferation, and apoptosis. RESULTS From the cohort study, we found that the expression of KLF11 was positively associated with highly proliferative BC of BC. Furthermore, prognostic analysis demonstrated that KLF11 was an independent negative factor for disease-free survival (DFS) and distant-metastasis-free survival (DMFS) of BC. The KLF11-related prognostic model for DFS and DMFS showed high accuracy in predicting the 3-,5- and 10 -year survival probability of BC patients. Additionally, the knockdown of KLF11 inhibited cell viability and proliferation, as well as induced cell apoptosis in MCF7 and MDA-MB-231 cells, while only inhibited cell viability and induced cell apoptosis in SK-BR-3 cells. CONCLUSIONS Our study indicated that targeting KLF11 is an interesting therapeutic concept and further research could lead to a new therapeutic improvement in BC, especially in highly aggressive molecular subtypes.
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Affiliation(s)
- Lili Lin
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Kristina Pfender
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Nina Ditsch
- Department of Gynecology and Obstetrics, University Hospital Augsburg, 86156, Augsburg, Germany
| | - Christina Kuhn
- Department of Gynecology and Obstetrics, University Hospital Augsburg, 86156, Augsburg, Germany
| | - Martina Rahmeh
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lin Peng
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Elisa Schmoeckel
- Department of Pathology, Ludwig-Maximilians University of Munich, 81337, Munich, Germany
| | - Doris Mayr
- Department of Pathology, Ludwig-Maximilians University of Munich, 81337, Munich, Germany
| | - Fabian Trillsch
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Mirjana Kessler
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
- Department of Gynecology and Obstetrics, University Hospital Augsburg, 86156, Augsburg, Germany.
| | - Anna Hester
- Department of Obstetrics and Gynecology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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Zhao G, Liang J, Shan G, Gu J, Xu F, Lu C, Ma T, Bi G, Zhan C, Ge D. KLF11 regulates lung adenocarcinoma ferroptosis and chemosensitivity by suppressing GPX4. Commun Biol 2023; 6:570. [PMID: 37248295 DOI: 10.1038/s42003-023-04959-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/20/2023] [Indexed: 05/31/2023] Open
Abstract
Ferroptosis, an iron-dependent non-apoptotic cell death, has been shown to play a vital role in tumor proliferation and chemotherapy resistance. Here, we report that KLF11 inhibits lung adenocarcinoma (LUAD) cell proliferation and promotes chemotherapy sensitivity by participating in the GPX4-related ferroptosis pathway. Through an RNA-sequence screen from LUAD cells pretreatment with ferroptosis inducers (FINs), we discovered that KLF11 expression was significantly higher in FINs-treated cells, suggesting that KLF11 may be involved in ferroptosis. Overexpression of KLF11 promoted LUAD cells to undergo ferroptosis alterations. Meanwhile, upregulation of KLF11 expression also inhibited cell proliferation and increased chemosensitivity, whereas knockout of KLF11 did the opposite. With ChIP-Seq and RNA-Seq, we identified GPX4 as a downstream target of KLF11. Through ChIP-qPCR and dual luciferase assay, we clarified that KLF11 binds to the promoter region of GPX4 and represses its transcription. Restored GPX4 expression antagonized the ability of KLF11 to promote ferroptosis, increase chemotherapy sensitivity and inhibit cell proliferation in vitro and in vivo. Clinically, KLF11 declined in LUAD and its low expression was associated with reduced patient survival. Our findings established the function of KLF11 to promote ferroptosis in LUAD, thereby inhibiting cell proliferation and enhancing the efficacy of chemotherapy.
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Affiliation(s)
- Guangyin Zhao
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiaqi Liang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guangyao Shan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Gu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Fengkai Xu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunlai Lu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Teng Ma
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guoshu Bi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Di Ge
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
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5
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Wee JLQ, Murugesan SN, Wheat CW, Monteiro A. The genetic basis of wing spots in Pieris canidia butterflies. BMC Genomics 2023; 24:169. [PMID: 37016295 PMCID: PMC10074818 DOI: 10.1186/s12864-023-09261-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 03/20/2023] [Indexed: 04/06/2023] Open
Abstract
Spots in pierid butterflies and eyespots in nymphalid butterflies are likely non-homologous wing colour pattern elements, yet they share a few features in common. Both develop black scales that depend on the function of the gene spalt, and both might have central signalling cells. This suggests that both pattern elements may be sharing common genetic circuitry. Hundreds of genes have already been associated with the development of nymphalid butterfly eyespot patterns, but the genetic basis of the simpler spot patterns on the wings of pierid butterflies has not been investigated. To facilitate studies of pierid wing patterns, we report a high-quality draft genome assembly for Pieris canidia, the Indian cabbage white. We then conducted transcriptomic analyses of pupal wing tissues sampled from the spot and non-spot regions of P. canidia at 3-6 h post-pupation. A total of 1352 genes were differentially regulated between wing tissues with and without the black spot, including spalt, Krüppel-like factor 10, genes from the Toll, Notch, TGF-β, and FGFR signalling pathways, and several genes involved in the melanin biosynthetic pathway. We identified 14 genes that are up-regulated in both pierid spots and nymphalid eyespots and propose that spots and eyespots share regulatory modules despite their likely independent origins.
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Affiliation(s)
- Jocelyn Liang Qi Wee
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore.
| | - Suriya Narayanan Murugesan
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore.
| | | | - Antónia Monteiro
- Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore, 117543, Singapore
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Guan G, Qin T, Zhao LL, Jin P. Genetic and Functional Analyses of the Novel KLF11 Pro193Thr Variant in a Three-Generation Family with MODY7. Horm Metab Res 2023; 55:136-141. [PMID: 36241199 DOI: 10.1055/a-1961-6281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
KLF11 regulates insulin gene expression through binding to the insulin promoter and has been reported as a causative gene for maturity-onset diabetes of the young 7 (MODY7). Here, we report a novel KLF11 variant associated with a three-generation family with early childhood-onset diabetes and explore its clinical and functional characteristics. The three-generational pedigree contains five patients affected by diabetes. The pathogenic variant identified by whole-exome sequencing was further confirmed by Sanger sequencing and pedigree verification. Luciferase reporter assays and glucose-stimulated insulin secretion were used to examine whether the KLF11 variant binds to the insulin promoter and regulate insulin secretion in vitro. The proband, his son, and his uncle exhibited hyperglycemia at ages 32, 13 and 71 years, respectively. All three patients showed characteristics of metabolic syndrome (obesity, dyslipidemia, and diabetes), but the insulin secretion of islet β-cells was impaired. A novel heterozygous missense variant, c.577 C>A (p.Pro193Thr) of the KLF11 gene was detected in all three patients. This variant co-segregates with the diabetes phenotype, consistent with an autosomal dominant disorder. The identified KLF11 p.Pro193Thr variant drastically decreased the transcriptional activity of KLF11, as demonstrated by luciferase reporter assay. Functional analyses revealed that the KLF11 Pro193Thr variant inhibited glucose-stimulated insulin secretion. We identified a novel KLF11 Pro193Thr variant in a three generation family with MODY7. These findings shed light on the molecular mechanisms underlying the pathogenesis of MODY7 and expand the genotype and clinical spectrum of MODY7.
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Affiliation(s)
- Gaopeng Guan
- Department of Endocrinology, Central South University Third Xiangya Hospital, Changsha, China
| | - Tiantian Qin
- Department of Endocrinology, Central South University Third Xiangya Hospital, Changsha, China
| | - Li-Ling Zhao
- Department of Endocrinology, Central South University Third Xiangya Hospital, Changsha, China
| | - Ping Jin
- Department of Endocrinology, Central South University Third Xiangya Hospital, Changsha, China
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7
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Kruppel-like Factors in Skeletal Physiology and Pathologies. Int J Mol Sci 2022; 23:ijms232315174. [PMID: 36499521 PMCID: PMC9741390 DOI: 10.3390/ijms232315174] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/11/2022] Open
Abstract
Kruppel-like factors (KLFs) belong to a large group of zinc finger-containing transcription factors with amino acid sequences resembling the Drosophila gap gene Krüppel. Since the first report of molecular cloning of the KLF family gene, the number of KLFs has increased rapidly. Currently, 17 murine and human KLFs are known to play crucial roles in the regulation of transcription, cell proliferation, cellular differentiation, stem cell maintenance, and tissue and organ pathogenesis. Recent evidence has shown that many KLF family molecules affect skeletal cells and regulate their differentiation and function. This review summarizes the current understanding of the unique roles of each KLF in skeletal cells during normal development and skeletal pathologies.
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Stage-specific H3K9me3 occupancy ensures retrotransposon silencing in human pre-implantation embryos. Cell Stem Cell 2022; 29:1051-1066.e8. [DOI: 10.1016/j.stem.2022.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 03/31/2022] [Accepted: 06/01/2022] [Indexed: 12/13/2022]
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Sarkar C, Chakroborty D, Goswami S, Fan H, Mo X, Basu S. VEGF-A controls the expression of its regulator of angiogenic functions, dopamine D2 receptor, on endothelial cells. J Cell Sci 2022; 135:jcs259617. [PMID: 35593650 PMCID: PMC9234670 DOI: 10.1242/jcs.259617] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/05/2022] [Indexed: 01/08/2023] Open
Abstract
We have previously demonstrated significant upregulation of dopamine D2 (DAD2) receptor (DRD2) expression on tumor endothelial cells. The dopamine D2 receptors, upon activation, inhibit the proangiogenic actions of vascular endothelial growth factor-A (VEGF-A, also known as vascular permeability factor). Interestingly, unlike tumor endothelial cells, normal endothelial cells exhibit very low to no expression of dopamine D2 receptors. Here, for the first time, we demonstrate that through paracrine signaling, VEGF-A can control the expression of dopamine D2 receptors on endothelial cells via Krüppel-like factor 11 (KLF11)-extracellular signal-regulated kinase (ERK) 1/2 pathway. These results thus reveal a novel bidirectional communication between VEGF-A and DAD2 receptors.
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Affiliation(s)
- Chandrani Sarkar
- Department of Pathology, Ohio State University, Columbus, Ohio 43201, USA
- Comprehensive Cancer Center, Ohio State University, Columbus, Ohio 43210, USA
- Department of Pathology, University of South Alabama, Mobile, Alabama 36617, USA
- Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama 36688, USA
- Department of Biochemistry & Molecular Biology, University of South Alabama, Mobile, Alabama 36688, USA
| | - Debanjan Chakroborty
- Department of Pathology, Ohio State University, Columbus, Ohio 43201, USA
- Comprehensive Cancer Center, Ohio State University, Columbus, Ohio 43210, USA
- Department of Pathology, University of South Alabama, Mobile, Alabama 36617, USA
- Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama 36688, USA
- Department of Biochemistry & Molecular Biology, University of South Alabama, Mobile, Alabama 36688, USA
| | - Sandeep Goswami
- Department of Pathology, Ohio State University, Columbus, Ohio 43201, USA
- Department of Pathology, University of South Alabama, Mobile, Alabama 36617, USA
- Cancer Biology Program, Mitchell Cancer Institute, University of South Alabama, Mobile, Alabama 36688, USA
| | - Hao Fan
- Department of Pathology, Ohio State University, Columbus, Ohio 43201, USA
| | - Xiaokui Mo
- Department of Biomedical Informatics, Ohio State University, Columbus, Ohio 43210, USA
| | - Sujit Basu
- Department of Pathology, Ohio State University, Columbus, Ohio 43201, USA
- Comprehensive Cancer Center, Ohio State University, Columbus, Ohio 43210, USA
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University, Columbus, Ohio 43210, USA
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Kong HJ, Lee JJ, Kim JW, Kim J, Kim YO, Yeo SY. Zebrafish Klf11b is Required to Maintain Cell Viability by Inhibiting p53-Mediated Apoptosis. Dev Reprod 2022; 26:79-90. [PMID: 35950165 PMCID: PMC9336215 DOI: 10.12717/dr.2022.26.2.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/24/2022] [Accepted: 06/03/2022] [Indexed: 11/17/2022]
Abstract
Krüppel-like factor 10 (KLF10) regulates various cellular functions, such as proliferation, differentiation and apoptosis, as well as the homeostasis of several types of tissue. In the present study, we attempted a loss-of-function analysis of zebrafish Klf11a and Klf11b, which constitute human KLF10 homologs. Embryos injected with klf11b-morpholino (MO) showed developmental retardation and cell death, whereas klf11a-MO-injected embryos showed normal development. In klf11b-MO-injected embryos, a dramatic increase in the amount of zebrafish p53 mRNA might be the cause of the increase in that of bax. The degree of apoptosis decreased in the klf11b-MO and p53-MO co-injected embryos. These findings imply that KLF10 is a negative regulator of p53-dependent transcription, suggesting that the KLF10/p53 complex may play an important role in apoptosis for maintenance of tissue homeostasis during embryonic development.
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Affiliation(s)
- Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
- Corresponding author Hee Jeong Kong, Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea. Tel: +82-51-720-2455, Fax: +82-51-720-2456, E-mail: , Sang-Yeob Yeo, Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea. Tel: +82-42-821-1552, Fax: +82-42-821-1692, E-mail:
| | - Jung Jin Lee
- Dept. of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Julan Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Sang-Yeob Yeo
- Dept. of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea
- Corresponding author Hee Jeong Kong, Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea. Tel: +82-51-720-2455, Fax: +82-51-720-2456, E-mail: , Sang-Yeob Yeo, Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea. Tel: +82-42-821-1552, Fax: +82-42-821-1692, E-mail:
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11
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Li J, Wang C, Cheng R, Su H, Wang L, Ji L, Ji H. KLF11 promotes the progression of glioma via regulating HJURP. Cell Biol Int 2022; 46:1144-1155. [PMID: 35293659 DOI: 10.1002/cbin.11795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/05/2022] [Accepted: 03/13/2022] [Indexed: 11/09/2022]
Abstract
Understanding the molecular mechanism of glioma is very important for the diagnosis and treatment of glioma. Recently, a new study illustrated that KLF11 could be a potential prognostic and diagnostic biomarker in glioma, but the critical role is not illustrated. In this paper, we found that KLF11 was highly expressed in glioma cancer tissues and cells, and KLF11 high expression of glioblastoma (GBM) and Lower-grade glioma (LGG) were correlated with poorer overall survival and disease-free survival percentages. KLF11 knockdown inhibited glioma cell proliferation and migration, while KLF11 overexpression enhanced cell proliferation and migration. In vivo, knockdown of KLF11 reduced the tumor size of glioma. With regard to the molecular regulatory mechanism, we clarified that the Holliday Junction Recognition Protein (HJURP) was positively regulated by KLF11. Meanwhile, we demonstrated that HJURP knockdown also inhibited glioma carcinoma progression. Overexpression of HJURP rescued the suppressed proliferation and migration function of glioma cells with depletion of KLF11. Therefore, our study demonstrated the function of KLF11 in glioma and showed KLF11 and HJURP could be prognostic and diagnostic markers in glioma, which provides a new insight of glioma therapy. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Jian Li
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Chanzhi City People's hospital, Chanzhi, 046099, Shanxi Province, China
| | - Chunhong Wang
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
| | - Rui Cheng
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
| | - Haiyang Su
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
| | - Lijun Wang
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
| | - Lei Ji
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
| | - Hongming Ji
- The Fifth Clinical Medical College of Shanxi Medical University, Taiyuan, 030012, Shanxi Province, China.,Department of neurosurgery, Shanxi Provincial People's hospital, Taiyuan, 030012, Shanxi, China
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12
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Xi Z, Zhang R, Zhang F, Ma S, Feng T. KLF11 Expression Predicts Poor Prognosis in Glioma Patients. Int J Gen Med 2021; 14:2923-2929. [PMID: 34234522 PMCID: PMC8254095 DOI: 10.2147/ijgm.s307784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/18/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Glioma is a primary intracranial malignant tumor with high recurrence and mortality rates. It is very important to study the prognostic factors. KLF11 can function as an oncogene or a tumor suppressor, depending on the tumor and tissue types and the cancer stage. In this study, we aimed to determine whether KLF11 expression is related to the overall survival of glioma patients. Patients and Methods We investigated KLF11 expression in 116 glioma patients with different grades using Western blot and immunohistochemistry assay. We analyzed the patients with different glioma grades and KLF11 expression levels by Kaplan-Meier survival curves. Independent prognostic factors for poor overall survival were identified by univariate and multivariate analyses. Results There were 37 patients in KLF11 low expression group and 79 patients in high expression group. There was no difference in gender, age, tumor diameter or tumor location between two groups. The patients in KLF11 high expression group had higher ECOG score (P =0.025) and higher WHO grades (P =0.029). Western blot and immunohistochemistry assay showed KLF11 expression was significantly upregulated in glioma groups compared with normal brain tissues group (P < 0.05), and the expression in grades III-IV was significantly higher than those in grades I-II (P < 0.05). Kaplan-Meier survival curve analysis showed high KLF11 expression tended to reduce the overall survival (P < 0.05). After univariate and multivariate analyses, KLF11 expression (P =0.003) and age (P =0.007) were independent prognostic factors for poor survival in glioma patients. Conclusion KLF11 expression was increased in glioma tissues, and high KLF11 expression was associated with poor prognosis. KLF11 expression was an independent prognostic factor for poor survival in glioma patients. KLF11 may serve as a novel prognostic marker for gliomas and as a novel treatment target.
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Affiliation(s)
- Zhuo Xi
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Rui Zhang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Furong Zhang
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Shuang Ma
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Tianda Feng
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
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13
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Mukherjee S, Paricio N, Sokol NS. A stress-responsive miRNA regulates BMP signaling to maintain tissue homeostasis. Proc Natl Acad Sci U S A 2021; 118:e2022583118. [PMID: 34016750 PMCID: PMC8166057 DOI: 10.1073/pnas.2022583118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Adult organisms must sense and adapt to environmental fluctuations. In high-turnover tissues such as the intestine, these adaptive responses require rapid changes in gene expression that, in turn, likely involve posttranscriptional gene control. However, intestinal-tissue-specific microRNA (miRNA)-mediated regulatory pathways remain unexplored. Here, we report the role of an intestinal-specific miRNA, miR-958, that non-cell autonomously regulates stem cell numbers during tissue homeostasis and regeneration in the Drosophila adult midgut. We identify its downstream target cabut, the Drosophila ortholog of mammalian KLF10/11 transcription factors, which mediates this miR-958 function by promoting paracrine enterocyte-to-stem-cell bone morphogenetic protein (BMP) signaling. We also show that mature miR-958 levels transiently decrease in response to stress and that this decrease is required for proper stem cell expansion during tissue regeneration. In summary, we have identified a posttranscriptional mechanism that modulates BMP signaling activity within Drosophila adult intestinal tissue during both normal homeostasis and tissue regeneration to regulate intestinal stem cell numbers.
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Affiliation(s)
| | - Nuria Paricio
- Departamento de Genética, Facultad de Ciencies Biológicas and Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina, University of Valencia, 46100 Burjasot, Spain
| | - Nicholas S Sokol
- Department of Biology, Indiana University, Bloomington, IN 47405;
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14
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Frith K, Munier CML, Hastings L, Mowat D, Wilson M, Seddiki N, Macintosh R, Kelleher AD, Gray P, Zaunders JJ. The Role of ZEB2 in Human CD8 T Lymphocytes: Clinical and Cellular Immune Profiling in Mowat-Wilson Syndrome. Int J Mol Sci 2021; 22:ijms22105324. [PMID: 34070208 PMCID: PMC8158478 DOI: 10.3390/ijms22105324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/12/2021] [Accepted: 05/12/2021] [Indexed: 11/16/2022] Open
Abstract
The Zeb2 gene encodes a transcription factor (ZEB2) that acts as an important immune mediator in mice, where it is expressed in early-activated effector CD8 T cells, and limits effector differentiation. Zeb2 homozygous knockout mice have deficits in CD8 T cells and NK cells. Mowat–Wilson syndrome (MWS) is a rare genetic disease resulting from heterozygous mutations in ZEB2 causing disease by haploinsufficiency. Whether ZEB2 exhibits similar expression patterns in human CD8 T cells is unknown, and MWS patients have not been comprehensively studied to identify changes in CD8 lymphocytes and NK cells, or manifestations of immunodeficiency. By using transcriptomic assessment, we demonstrated that ZEB2 is expressed in early-activated effector CD8 T cells of healthy human volunteers following vaccinia inoculation and found evidence of a role for TGFß-1/SMAD signaling in these cells. A broad immunological assessment of six genetically diagnosed MWS patients identified two patients with a history of recurrent sinopulmonary infections, one of whom had recurrent oral candidiasis, one with lymphopenia, two with thrombocytopenia and three with detectable anti-nuclear antibodies. Immunoglobulin levels, including functional antibody responses to protein and polysaccharide vaccination, were normal. The MWS patients had a significantly lower CD8 T cell subset as % of lymphocytes, compared to healthy controls (median 16.4% vs. 25%, p = 0.0048), and resulting increased CD4:CD8 ratio (2.6 vs. 1.8; p = 0.038). CD8 T cells responded normally to mitogen stimulation in vitro and memory CD8 T cells exhibited normal proportions of subsets with important tissue-specific homing markers and cytotoxic effector molecules. There was a trend towards a decrease in the CD8 T effector memory subset (3.3% vs. 5.9%; p = 0.19). NK cell subsets were normal. This is the first evidence that ZEB2 is expressed in early-activated human effector CD8 T cells, and that haploinsufficiency of ZEB2 in MWS patients had a slight effect on immune function, skewing T cells away from CD8 differentiation. To date there is insufficient evidence to support an immunodeficiency occurring in MWS patients.
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Affiliation(s)
- Katie Frith
- Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (L.H.); (D.M.); (R.M.); (P.G.)
- School of Women’s and Children’s Health, UNSW Sydney, Sydney, NSW 2052, Australia
- Correspondence: (K.F.); (C.M.L.M.); (J.J.Z.)
| | - C. Mee Ling Munier
- The Kirby Institute for Infection and Immunity in Society, UNSW Sydney, Sydney, NSW 2052, Australia;
- Correspondence: (K.F.); (C.M.L.M.); (J.J.Z.)
| | - Lucy Hastings
- Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (L.H.); (D.M.); (R.M.); (P.G.)
| | - David Mowat
- Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (L.H.); (D.M.); (R.M.); (P.G.)
| | - Meredith Wilson
- Department of Clinical Genetics, Children’s Hospital at Westmead, Sydney, NSW 2145, Australia;
| | - Nabila Seddiki
- INSERM U955 Eq16, Vaccine Research Institute and Université Paris Est Créteil, F-94010 Créteil, France;
| | - Rebecca Macintosh
- Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (L.H.); (D.M.); (R.M.); (P.G.)
| | - Anthony D. Kelleher
- The Kirby Institute for Infection and Immunity in Society, UNSW Sydney, Sydney, NSW 2052, Australia;
- Centre for Applied Medical Research, St Vincent’s Hospital, Darlinghurst, NSW 2010, Australia
| | - Paul Gray
- Sydney Children’s Hospital, Randwick, NSW 2031, Australia; (L.H.); (D.M.); (R.M.); (P.G.)
- School of Women’s and Children’s Health, UNSW Sydney, Sydney, NSW 2052, Australia
| | - John James Zaunders
- The Kirby Institute for Infection and Immunity in Society, UNSW Sydney, Sydney, NSW 2052, Australia;
- Centre for Applied Medical Research, St Vincent’s Hospital, Darlinghurst, NSW 2010, Australia
- Correspondence: (K.F.); (C.M.L.M.); (J.J.Z.)
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15
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Zhang P, Katzaroff AJ, Buttitta LA, Ma Y, Jiang H, Nickerson DW, Øvrebø JI, Edgar BA. The Krüppel-like factor Cabut has cell cycle regulatory properties similar to E2F1. Proc Natl Acad Sci U S A 2021; 118:e2015675118. [PMID: 33558234 PMCID: PMC7896318 DOI: 10.1073/pnas.2015675118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Using a gain-of-function screen in Drosophila, we identified the Krüppel-like factor Cabut (Cbt) as a positive regulator of cell cycle gene expression and cell proliferation. Enforced cbt expression is sufficient to induce an extra cell division in the differentiating fly wing or eye, and also promotes intestinal stem cell divisions in the adult gut. Although inappropriate cell proliferation also results from forced expression of the E2f1 transcription factor or its target, Cyclin E, Cbt does not increase E2F1 or Cyclin E activity. Instead, Cbt regulates a large set of E2F1 target genes independently of E2F1, and our data suggest that Cbt acts via distinct binding sites in target gene promoters. Although Cbt was not required for cell proliferation during wing or eye development, Cbt is required for normal intestinal stem cell divisions in the midgut, which expresses E2F1 at relatively low levels. The E2F1-like functions of Cbt identify a distinct mechanism for cell cycle regulation that may be important in certain normal cell cycles, or in cells that cycle inappropriately, such as cancer cells.
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Affiliation(s)
- Peng Zhang
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112
| | - Alexia J Katzaroff
- Molecular and Cellular Biology Program, University of Washington, Seattle, WA 98195
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109
| | - Laura A Buttitta
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109
| | - Yiqin Ma
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112
| | - Huaqi Jiang
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109
| | - Derek W Nickerson
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109
| | - Jan Inge Øvrebø
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112
| | - Bruce A Edgar
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112;
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109
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The Distinct Roles of Transcriptional Factor KLF11 in Normal Cell Growth Regulation and Cancer as a Mediator of TGF-β Signaling Pathway. Int J Mol Sci 2020; 21:ijms21082928. [PMID: 32331236 PMCID: PMC7215894 DOI: 10.3390/ijms21082928] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022] Open
Abstract
KLF11 (Krüppel-like factor 11) belongs to the family of Sp1/Krüppel-like zinc finger transcription factors that play important roles in a variety of cell types and tissues. KLF11 was initially described as a transforming growth factor-beta (TGF-β) inducible immediate early gene (TIEG). KLF11 promotes the effects of TGF-β on cell growth control by influencing the TGFβ–Smads signaling pathway and regulating the transcription of genes that induce either apoptosis or cell cycle arrest. In carcinogenesis, KLF11 can show diverse effects. Its function as a tumor suppressor gene can be suppressed by phosphorylation of its binding domains via oncogenic pathways. However, KLF 11 can itself also show tumor-promoting effects and seems to have a crucial role in the epithelial–mesenchymal transition process. Here, we review the current knowledge about the function of KLF11 in cell growth regulation. We focus on its transcriptional regulatory function and its influence on the TGF-β signaling pathway. We further discuss its possible role in mediating crosstalk between various signaling pathways in normal cell growth and in carcinogenesis.
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17
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Fan Y, Lu H, Liang W, Hu W, Zhang J, Chen YE. Krüppel-like factors and vascular wall homeostasis. J Mol Cell Biol 2018; 9:352-363. [PMID: 28992202 DOI: 10.1093/jmcb/mjx037] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/22/2017] [Indexed: 12/19/2022] Open
Abstract
Cardiovascular diseases (CVDs) are major causes of death worldwide. Identification of promising targets for prevention and treatment of CVDs is paramount in the cardiovascular field. Numerous transcription factors regulate cellular function through modulation of specific genes and thereby are involved in the physiological and pathophysiological processes of CVDs. Although Krüppel-like factors (KLFs) have a similar protein structure with a conserved zinc finger domain, they possess distinct tissue and cell distribution patterns as well as biological functions. In the vascular system, KLF activities are regulated at both transcriptional and posttranscriptional levels. Growing in vitro, in vivo, and genetic epidemiology studies suggest that specific KLFs play important roles in vascular wall biology, which further affect vascular diseases. KLFs regulate various functional aspects such as cell growth, differentiation, activation, and development through controlling a whole cluster of functionally related genes and modulating various signaling pathways in response to pathological conditions. Therapeutic targeting of selective KLF family members may be desirable to achieve distinct treatment effects in the context of various vascular diseases. Further elucidation of the association of KLFs with human CVDs, their underlying molecular mechanisms, and precise protein structure studies will be essential to define KLFs as promising targets for therapeutic interventions in CVDs.
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Affiliation(s)
- Yanbo Fan
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Haocheng Lu
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Wenying Liang
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Wenting Hu
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Jifeng Zhang
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Y Eugene Chen
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
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18
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Memon A, Lee WK. KLF10 as a Tumor Suppressor Gene and Its TGF-β Signaling. Cancers (Basel) 2018; 10:E161. [PMID: 29799499 PMCID: PMC6025274 DOI: 10.3390/cancers10060161] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/15/2018] [Accepted: 05/23/2018] [Indexed: 12/17/2022] Open
Abstract
Krüppel-like factor 10 (KLF10), originally named TGF-β (Transforming growth factor beta) inducible early gene 1 (TIEG1), is a DNA-binding transcriptional regulator containing a triple C2H2 zinc finger domain. By binding to Sp1 (specificity protein 1) sites on the DNA and interactions with other regulatory transcription factors, KLF10 encourages and suppresses the expression of multiple genes in many cell types. Many studies have investigated its signaling cascade, but other than the TGF-β/Smad signaling pathway, these are still not clear. KLF10 plays a role in proliferation, differentiation as well as apoptosis, just like other members of the SP (specificity proteins)/KLF (Krüppel-like Factors). Recently, several studies reported that KLF10 KO (Knock out) is associated with defects in cell and organs such as osteopenia, abnormal tendon or cardiac hypertrophy. Since KLF10 was first discovered, several studies have defined its role in cancer as a tumor suppressor. KLF10 demonstrate anti-proliferative effects and induce apoptosis in various carcinoma cells including pancreatic cancer, leukemia, and osteoporosis. Collectively, these data indicate that KLF10 plays a significant role in various biological processes and diseases, but its role in cancer is still unclear. Therefore, this review was conducted to describe and discuss the role and function of KLF10 in diseases, including cancer, with a special emphasis on its signaling with TGF-β.
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Affiliation(s)
- Azra Memon
- Laboratory of Developmental Genetics, Department of Biomedical Sciences, School of Medicine, Inha University, Incheon 22212, Korea.
| | - Woon Kyu Lee
- Laboratory of Developmental Genetics, Department of Biomedical Sciences, School of Medicine, Inha University, Incheon 22212, Korea.
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19
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Yan X, Xiong X, Chen YG. Feedback regulation of TGF-β signaling. Acta Biochim Biophys Sin (Shanghai) 2018; 50:37-50. [PMID: 29228156 DOI: 10.1093/abbs/gmx129] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Indexed: 12/20/2022] Open
Abstract
Transforming growth factor beta (TGF-β) is a multi-functional polypeptide that plays a critical role in regulating a broad range of cellular functions and physiological processes. Signaling is initiated when TGF-β ligands bind to two types of cell membrane receptors with intrinsic Ser/Thr kinase activity and transmitted by the intracellular Smad proteins, which act as transcription factors to regulate gene expression in the nucleus. Although it is relatively simple and straight-forward, this TGF-β/Smad pathway is regulated by various feedback loops at different levels, including the ligand, the receptor, Smads and transcription, and is thus fine-tuned in terms of signaling robustness, duration, specificity, and plasticity. The precise control gives rise to versatile and context-dependent pathophysiological functions. In this review, we firstly give an overview of TGF-β signaling, and then discuss how each step of TGF-β signaling is finely controlled by distinct modes of feedback mechanisms, involving both protein regulators and miRNAs.
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Affiliation(s)
- Xiaohua Yan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Xiangyang Xiong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
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20
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Firdous P, Nissar K, Ali S, Ganai BA, Shabir U, Hassan T, Masoodi SR. Genetic Testing of Maturity-Onset Diabetes of the Young Current Status and Future Perspectives. Front Endocrinol (Lausanne) 2018; 9:253. [PMID: 29867778 PMCID: PMC5966560 DOI: 10.3389/fendo.2018.00253] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 05/02/2018] [Indexed: 12/12/2022] Open
Abstract
Diabetes is a global epidemic problem growing exponentially in Asian countries posing a serious threat. Among diabetes, maturity-onset diabetes of the young (MODY) is a heterogeneous group of monogenic disorders that occurs due to β cell dysfunction. Genetic defects in the pancreatic β-cells result in the decrease of insulin production required for glucose utilization thereby lead to early-onset diabetes (often <25 years). It is generally considered as non-insulin dependent form of diabetes and comprises of 1-5% of total diabetes. Till date, 14 genes have been identified and mutation in them may lead to MODY. Different genetic testing methodologies like linkage analysis, restriction fragment length polymorphism, and DNA sequencing are used for the accurate and correct investigation of gene mutations associated with MODY. The next-generation sequencing has emerged as one of the most promising and effective tools to identify novel mutated genes related to MODY. Diagnosis of MODY is mainly relying on the sequential screening of the three marker genes like hepatocyte nuclear factor 1 alpha (HNF1α), hepatocyte nuclear factor 4 alpha (HNF4α), and glucokinase (GCK). Interestingly, MODY patients can be managed by diet alone for many years and may also require minimal doses of sulfonylureas. The primary objective of this article is to provide a review on current status of MODY, its prevalence, genetic testing/diagnosis, possible treatment, and future perspective.
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Affiliation(s)
- Parveena Firdous
- Centre of Research for Development (CORD), University of Kashmir, Srinagar, India
| | - Kamran Nissar
- Department of Biochemistry, University of Kashmir, Srinagar, India
| | - Sajad Ali
- Centre of Research for Development (CORD), University of Kashmir, Srinagar, India
| | - Bashir Ahmad Ganai
- Centre of Research for Development (CORD), University of Kashmir, Srinagar, India
- *Correspondence: Bashir Ahmad Ganai,
| | - Uzma Shabir
- Centre of Research for Development (CORD), University of Kashmir, Srinagar, India
| | - Toyeeba Hassan
- Centre of Research for Development (CORD), University of Kashmir, Srinagar, India
| | - Shariq Rashid Masoodi
- Department of Endocrinology, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, India
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Higuchi Y, Soga T, Parhar IS. Regulatory Pathways of Monoamine Oxidase A during Social Stress. Front Neurosci 2017; 11:604. [PMID: 29163009 PMCID: PMC5671571 DOI: 10.3389/fnins.2017.00604] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/16/2017] [Indexed: 12/18/2022] Open
Abstract
Social stress has a high impact on many biological systems in the brain, including serotonergic (5-HT) system-a major drug target in the current treatment for depression. Hyperactivity of hypothalamic-pituitary-adrenal (HPA) axis and monoamine oxidase A (MAO-A) are well-known stress responses, which are involved in the central 5-HT system. Although, many MAO-A inhibitors have been developed and used in the therapeutics of depression, effective management of depression by modulating the activity of MAO-A has not been achieved. Identifying the molecular pathways that regulate the activity of MAO-A in the brain is crucial for developing new drug targets for precise control of MAO-A activity. Over the last few decades, several regulatory pathways of MAO-A consisting of Kruppel like factor 11 (KLF11), Sirtuin1, Ring finger protein in neural stem cells (RINES), and Cell division cycle associated 7-like protein (R1) have been identified, and the influence of social stress on these regulatory factors evaluated. This review explores various aspects of these pathways to expand our understanding of the roles of the HPA axis and MAO-A regulatory pathways during social stress. The first part of this review introduces some components of the HPA axis, explains how stress affects them and how they interact with the 5-HT system in the brain. The second part summarizes the novel regulatory pathways of MAO-A, which have high potential as novel therapeutic targets for depression.
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Affiliation(s)
- Yuki Higuchi
- Brain Research Institute, School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Tomoko Soga
- Brain Research Institute, School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Ishwar S Parhar
- Brain Research Institute, School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
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22
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Shenoy CC, Khan Z, Zheng Y, Jones TL, Khazaie K, Daftary GS. Progressive Fibrosis: A Progesterone- and KLF11-Mediated Sexually Dimorphic Female Response. Endocrinology 2017; 158:3605-3619. [PMID: 28938437 DOI: 10.1210/en.2017-00171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 08/08/2017] [Indexed: 01/06/2023]
Abstract
Progressive scarring is ubiquitous postoperatively and in an array of chronic systemic diseases. Recent studies indicate that such scarring has a high female propensity; females are also almost exclusively affected by endometriosis, a common sex steroid-dependent fibrotic disease. Endometriosis-related fibrosis is regulated epigenetically through transcription factor Krüppel-like factor 11 (KLF11). In response to surgical induction of endometriosis, Klf11-/- female mice develop significant fibrosis in contrast to wild-type mice. We therefore hypothesized that female fibrotic predilection was mediated by differential sex steroid regulation of KLF11/collagen 1a1 signaling and investigated the fibrotic response in wild-type and Klf11-/- male and female animals using a sterile peritonitis model. Fibrosis selectively developed in Klf11-/- females. Fibrosis in these animals was almost completely abrogated by ovariectomy. Ovariectomized animals were selectively supplemented with estradiol, medroxyprogesterone acetate (MPA), or dihydrotestosterone; fibrosis was only observed in mice exposed to MPA. Fibrosis therefore selectively developed in Klf11-/- female mice in response to physiological or pharmacological progesterone. The fibrotic response in these animals was also mitigated in response to antiprogestin therapy. Profibrotic gene expression was activated in a primary human peritoneal cell line in response to KLF11 short hairpin RNA and MPA but not estradiol. KLF11/collagen 1a1 signaling previously shown to be linked to fibrosis was thus selectively dysregulated in MPA-treated cells. Our in vivo and in vitro findings in an animal model and human cells, respectively, suggest that progressive fibrotic scarring is a sexually dimorphic response irrespective of etiology; moreover, it is responsive to novel, individualized therapeutic intervention.
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Affiliation(s)
- Chandra C Shenoy
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905
| | - Zaraq Khan
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905
| | - Ye Zheng
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905
| | - Tiffanny L Jones
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905
| | | | - Gaurang S Daftary
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905
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23
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Bialkowska AB, Yang VW, Mallipattu SK. Krüppel-like factors in mammalian stem cells and development. Development 2017; 144:737-754. [PMID: 28246209 DOI: 10.1242/dev.145441] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Krüppel-like factors (KLFs) are a family of zinc-finger transcription factors that are found in many species. Recent studies have shown that KLFs play a fundamental role in regulating diverse biological processes such as cell proliferation, differentiation, development and regeneration. Of note, several KLFs are also crucial for maintaining pluripotency and, hence, have been linked to reprogramming and regenerative medicine approaches. Here, we review the crucial functions of KLFs in mammalian embryogenesis, stem cell biology and regeneration, as revealed by studies of animal models. We also highlight how KLFs have been implicated in human diseases and outline potential avenues for future research.
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Affiliation(s)
- Agnieszka B Bialkowska
- Division of Gastroenterology, Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY 11794-8176, USA
| | - Vincent W Yang
- Division of Gastroenterology, Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY 11794-8176, USA.,Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY 11794-8176, USA
| | - Sandeep K Mallipattu
- Division of Nephrology, Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY 11794-8176, USA
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Delaney AA, Khan Z, Zheng Y, Correa LF, Zanfagnin V, Shenoy CC, Schoolmeester JK, Saadalla AM, El-Nashar S, Famuyide AO, Subramaniam M, Hawse JR, Khazaie K, Daftary GS. KLF10 Mediated Epigenetic Dysregulation of Epithelial CD40/CD154 Promotes Endometriosis. Biol Reprod 2016; 95:62. [PMID: 27488034 PMCID: PMC5333936 DOI: 10.1095/biolreprod.116.140764] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 07/27/2016] [Indexed: 12/11/2022] Open
Abstract
Endometriosis is a highly prevalent, chronic, heterogeneous, fibro-inflammatory disease that remains recalcitrant to conventional therapy. We previously showed that loss of KLF11, a transcription factor implicated in uterine disease, results in progression of endometriosis. Despite extensive homology, co-expression, and human disease association, loss of the paralog Klf10 causes a unique inflammatory, cystic endometriosis phenotype in contrast to fibrotic progression seen with loss of Klf11. We identify here for the first time a novel role for KLF10 in endometriosis. In an animal endometriosis model, unlike wild-type controls, Klf10−/− animals developed cystic lesions with massive immune infiltrate and minimal peri-lesional fibrosis. The Klf10−/− disease progression phenotype also contrasted with prolific fibrosis and minimal immune cell infiltration seen in Klf11−/− animals. We further found that lesion genotype rather than that of the host determined each unique disease progression phenotype. Mechanistically, KLF10 regulated CD40/CD154-mediated immune pathways. Both inflammatory as well as fibrotic phenotypes are the commonest clinical manifestations in chronic fibro-inflammatory diseases such as endometriosis. The complementary, paralogous Klf10 and Klf11 models therefore offer novel insights into the mechanisms of inflammation and fibrosis in a disease-relevant context. Our data suggests that divergence in underlying gene dysregulation critically determines disease-phenotype predominance rather than the conventional paradigm of inflammation being precedent to fibrotic scarring. Heterogeneity in clinical progression and treatment response are thus likely from disparate gene regulation profiles. Characterization of disease phenotype-associated gene dysregulation offers novel approaches for developing targeted, individualized therapy for recurrent and recalcitrant chronic disease.
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Affiliation(s)
- Abigail A Delaney
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Zaraq Khan
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Ye Zheng
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Luiz F Correa
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Valentina Zanfagnin
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - Chandra C Shenoy
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
| | - John K Schoolmeester
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | - Sherif El-Nashar
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota
| | - Abimbola O Famuyide
- Laboratory of Translational Epigenetics in Reproduction, Mayo Clinic, Rochester, Minnesota
| | | | - John R Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota
| | | | - Gaurang S Daftary
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota
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Duncan JW, Zhang X, Wang N, Johnson S, Harris S, Udemgba C, Ou XM, Youdim MB, Stockmeier CA, Wang JM. Binge ethanol exposure increases the Krüppel-like factor 11-monoamine oxidase (MAO) pathway in rats: Examining the use of MAO inhibitors to prevent ethanol-induced brain injury. Neuropharmacology 2016; 105:329-340. [PMID: 26805422 DOI: 10.1016/j.neuropharm.2016.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/14/2016] [Accepted: 01/20/2016] [Indexed: 12/25/2022]
Abstract
Binge drinking induces several neurotoxic consequences including oxidative stress and neurodegeneration. Because of these effects, drugs which prevent ethanol-induced damage to the brain may be clinically beneficial. In this study, we investigated the ethanol-mediated KLF11-MAO cell death cascade in the frontal cortex of Sprague-Dawley rats exposed to a modified Majchowicz 4-day binge ethanol model and control rats. Moreover, MAO inhibitors (MAOIs) were investigated for neuroprotective activity against binge ethanol. Binge ethanol-treated rats demonstrated a significant increase in KLF11, both MAO isoforms, protein oxidation and caspase-3, as well as a reduction in BDNF expression in the frontal cortex compared to control rats. MAOIs prevented these binge ethanol-induced changes, suggesting a neuroprotective benefit. Neither binge ethanol nor MAOI treatment significantly affected protein expression levels of the oxidative stress enzymes, SOD2 or catalase. Furthermore, ethanol-induced antinociception was enhanced following exposure to the 4-day ethanol binge. These results demonstrate that the KLF11-MAO pathway is activated by binge ethanol exposure and MAOIs are neuroprotective by preventing the binge ethanol-induced changes associated with this cell death cascade. This study supports KLF11-MAO as a mechanism of ethanol-induced neurotoxicity and cell death that could be targeted with MAOI drug therapy to alleviate alcohol-related brain injury. Further examination of MAOIs to reduce alcohol use disorder-related brain injury could provide pivotal insight to future pharmacotherapeutic opportunities.
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Affiliation(s)
- Jeremy W Duncan
- Program in Neuroscience, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Xiao Zhang
- Program in Neuroscience, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Niping Wang
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Shakevia Johnson
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Sharonda Harris
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Chinelo Udemgba
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Xiao-Ming Ou
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Moussa B Youdim
- Technion-Rappaport Family Faculty of Medicine, Eve Topf Center of Excellence, For Neurodegenerative Diseases Research, Haifa, 31096, Israel
| | - Craig A Stockmeier
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Jun Ming Wang
- Program in Neuroscience, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, USA; Department of Pathology, University of Mississippi Medical Center, Jackson, MS 39216, USA.
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26
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Mathison A, Escande C, Calvo E, Seo S, White T, Salmonson A, Faubion WA, Buttar N, Iovanna J, Lomberk G, Chini EN, Urrutia R. Phenotypic Characterization of Mice Carrying Homozygous Deletion of KLF11, a Gene in Which Mutations Cause Human Neonatal and MODY VII Diabetes. Endocrinology 2015; 156:3581-95. [PMID: 26248217 PMCID: PMC4588811 DOI: 10.1210/en.2015-1145] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We have previously shown that amino acid changes in the human Kruppel-Like Factor (KLF) 11 protein is associated with the development of maturity onset diabetes of the young VII, whereas complete inactivation of this pathway by the -331 human insulin mutation causes neonatal diabetes mellitus. Here, we report that Klf11-/- mice have decreased circulating insulin levels, alterations in the control of blood glucose and body weight, as well as serum dyslipidemia, but do not develop diabetes. Functional assays using ex vivo liver tissue sections demonstrate that Klf11-/- mice display increased insulin sensitivity. Genome-wide experiments validated by pathway-specific quantitative PCR arrays reveal that the Klf11-/- phenotype associates to alterations in the regulation of gene networks involved in lipid metabolism, in particular those regulated by peroxisome proliferator-activated receptor-γ. Combined, these results demonstrate that the major phenotype given by the whole-body deletion of Klf11 in mouse is not diabetes but increased insulin sensitivity, likely due to altered transcriptional regulation in target tissues. The absence of diabetes in the Klf11-/- mouse either indicates an interspecies difference for the role of this transcription factor in metabolic homeostasis between mouse and humans, or potentially highlights the fact that other molecular factors can compensate for its absence. Nevertheless, the data of this study, gathered at the whole-organism level, further support a role for KLF11 in metabolic processes like insulin sensitivity, which regulation is critical in several forms of diabetes.
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Affiliation(s)
- Angela Mathison
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Carlos Escande
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Ezequiel Calvo
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Seungmae Seo
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Thomas White
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Ann Salmonson
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - William A Faubion
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Navtej Buttar
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Juan Iovanna
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Gwen Lomberk
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Eduardo N Chini
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
| | - Raul Urrutia
- Laboratory of Epigenetics and Chromatin Dynamics (A.M., A.S., W.A.F., N.B., G.L., R.U.), Gastroenterology Research Unit, Departments of Biochemistry and Molecular Biology, Biophysics, Medicine, Epigenomics Translation Program Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota 55905; Metabolic Diseases and Aging Laboratory (C.E.), Institut Pasteur Montevideo, Montevideo 11400, Uruguay; Department of Anesthesia and Robert and Arlene Kogod Center on Aging (C.E., T.W., E.N.C.), Mayo Clinic, Rochester, Minnesota 55905; Endocrinology and Nephrology (E.C.), Centre Hospitalier Universitaire de Québec Research Center and Laval University, Québec, Québec, G1V 4G2, Canada; Lieber Institute for Brain Development (S.S.), Baltimore, Maryland 21205; and Centre de Recherche en Cancérologie de Marseille (J.I.), INSERM U1068, Centre Nationale de la Recherche Scientifique Unité Mixte de Recherche 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, 13288, France
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27
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Jim HS, Lin HY, Tyrer JP, Lawrenson K, Dennis J, Chornokur G, Chen Z, Chen AY, Permuth-Wey J, Aben KKH, Anton-Culver H, Antonenkova N, Bruinsma F, Bandera EV, Bean YT, Beckmann MW, Bisogna M, Bjorge L, Bogdanova N, Brinton LA, Brooks-Wilson A, Bunker CH, Butzow R, Campbell IG, Carty K, Chang-Claude J, Cook LS, Cramer DW, Cunningham JM, Cybulski C, Dansonka-Mieszkowska A, du Bois A, Despierre E, Sieh W, Doherty JA, Dörk T, Dürst M, Easton DF, Eccles DM, Edwards RP, Ekici AB, Fasching PA, Fridley BL, Gao YT, Gentry-Maharaj A, Giles GG, Glasspool R, Goodman MT, Gronwald J, Harter P, Hasmad HN, Hein A, Heitz F, Hildebrandt MA, Hillemanns P, Hogdall CK, Hogdall E, Hosono S, Iversen ES, Jakubowska A, Jensen A, Ji BT, Karlan BY, Kellar M, Kiemeney LA, Krakstad C, Kjaer SK, Kupryjanczyk J, Vierkant RA, Lambrechts D, Lambrechts S, Le ND, Lee AW, Lele S, Leminen A, Lester J, Levine DA, Liang D, Lim BK, Lissowska J, Lu K, Lubinski J, Lundvall L, Massuger LF, Matsuo K, McGuire V, McLaughlin JR, McNeish I, Menon U, Milne RL, Modugno F, Thomsen L, Moysich KB, Ness RB, Nevanlinna H, Eilber U, Odunsi K, Olson SH, Orlow I, Orsulic S, Palmieri Weber R, Paul J, Pearce CL, Pejovic T, Pelttari LM, Pike MC, Poole EM, Schernhammer E, Risch HA, Rosen B, Rossing MA, Rothstein JH, Rudolph A, Runnebaum IB, Rzepecka IK, Salvesen HB, Schwaab I, Shu XO, Shvetsov YB, Siddiqui N, Song H, Southey MC, Spiewankiewicz B, Sucheston-Campbell L, Teo SH, Terry KL, Thompson PJ, Tangen IL, Tworoger SS, van Altena AM, Vergote I, Walsh CS, Wang-Gohrke S, Wentzensen N, Whittemore AS, Wicklund KG, Wilkens LR, Wu AH, Wu X, Woo YL, Yang H, Zheng W, Ziogas A, Amankwah E, Berchuck A, Schildkraut JM, Kelemen LE, Ramus SJ, Monteiro AN, Goode EL, Narod SA, Gayther SA, Pharoah PDP, Sellers TA, Phelan CM. Common Genetic Variation in Circadian Rhythm Genes and Risk of Epithelial Ovarian Cancer (EOC). JOURNAL OF GENETICS AND GENOME RESEARCH 2015; 2:017. [PMID: 26807442 PMCID: PMC4722961 DOI: 10.23937/2378-3648/1410017] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Disruption in circadian gene expression, whether due to genetic variation or environmental factors (e.g., light at night, shiftwork), is associated with increased incidence of breast, prostate, gastrointestinal and hematologic cancers and gliomas. Circadian genes are highly expressed in the ovaries where they regulate ovulation; circadian disruption is associated with several ovarian cancer risk factors (e.g., endometriosis). However, no studies have examined variation in germline circadian genes as predictors of ovarian cancer risk and invasiveness. The goal of the current study was to examine single nucleotide polymorphisms (SNPs) in circadian genes BMAL1, CRY2, CSNK1E, NPAS2, PER3, REV1 and TIMELESS and downstream transcription factors KLF10 and SENP3 as predictors of risk of epithelial ovarian cancer (EOC) and histopathologic subtypes. The study included a test set of 3,761 EOC cases and 2,722 controls and a validation set of 44,308 samples including 18,174 (10,316 serous) cases and 26,134 controls from 43 studies participating in the Ovarian Cancer Association Consortium (OCAC). Analysis of genotype data from 36 genotyped SNPs and 4600 imputed SNPs indicated that the most significant association was rs117104877 in BMAL1 (OR = 0.79, 95% CI = 0.68-0.90, p = 5.59 × 10-4]. Functional analysis revealed a significant down regulation of BMAL1 expression following cMYC overexpression and increasing transformation in ovarian surface epithelial (OSE) cells as well as alternative splicing of BMAL1 exons in ovarian and granulosa cells. These results suggest that variation in circadian genes, and specifically BMAL1, may be associated with risk of ovarian cancer, likely through disruption of hormonal pathways.
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Affiliation(s)
- Heather S.L. Jim
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, FL, USA
| | - Hui-Yi Lin
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Jonathan P. Tyrer
- Department of Public Health and Primary Care, The Centre for Cancer Epidemiology, University of Cambridge, Strange ways Research Laboratory, Cambridge, UK
| | - Kate Lawrenson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Joe Dennis
- Department of Public Health and Primary Care, The Centre for Cancer Epidemiology, University of Cambridge, Strange ways Research Laboratory, Cambridge, UK
| | - Ganna Chornokur
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
| | - Zhihua Chen
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Ann Y. Chen
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Jennifer Permuth-Wey
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
| | - Katja KH. Aben
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
- Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands
| | - Hoda Anton-Culver
- Genetic Epidemiology Research Institute, UCI Center for Cancer Genetics Research and Prevention, School of Medicine, Department of Epidemiology, University of California Irvine, Irvine, CA, USA
| | - Natalia Antonenkova
- Byelorussian Institute for Oncology and Medical Radiology Aleksandrov N.N., Minsk, Belarus
| | - Fiona Bruinsma
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
| | - Elisa V. Bandera
- Cancer Prevention and Control, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - Yukie T. Bean
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, OR, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Matthias W. Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Germany
| | - Maria Bisogna
- Department of Surgery, Gynecology Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Line Bjorge
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Natalia Bogdanova
- Gynecology Research Unit, Hannover Medical School, Hannover, Germany
| | - Louise A. Brinton
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Angela Brooks-Wilson
- Canada’s Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, Canada
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC Canada
| | - Clareann H. Bunker
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
| | - Ralf Butzow
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
- Department of Pathology, Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Ian G. Campbell
- Cancer Genetics Laboratory, Research Division, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Australia
- Department of Pathology, University of Melbourne, Parkville, Victoria, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Victoria, Australia
| | - Karen Carty
- Department of Gynaecological Oncology, Glasgow Royal Infirmary, Glasgow, G31 2ER, UK
- CRUK Clinical Trials Unit, The Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK
| | - Jenny Chang-Claude
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Linda S. Cook
- Division of Epidemiology and Biostatistics, Department of Internal Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Daniel W. Cramer
- Obstetrics and Gynecology Center, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Julie M. Cunningham
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | | | - Andreas du Bois
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | - Evelyn Despierre
- Division of Gynecologic Oncology; Leuven Cancer Institute, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Weiva Sieh
- Department of Health Research and Policy-Epidemiology, Stanford University School of Medicine, Stanford, CA, USA
| | - Jennifer A. Doherty
- Department of Epidemiology, Geisel School of Medicine, Dartmouth, Hanover, NH, USA
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Thilo Dörk
- Gynecology Research Unit, Hannover Medical School, Hannover, Germany
| | - Matthias Dürst
- Department of Gynecology, Friedrich Schiller University, Jena, Germany
| | - Douglas F. Easton
- Department of Oncology, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - Diana M. Eccles
- Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK
| | - Robert P. Edwards
- Department of Obstetrics Gynecology/RS, Division of Gynecological Oncology, Ovarian Cancer Center of Excellence, University of Pittsburgh, Pittsburgh, PA, USA
| | - Arif B. Ekici
- Institute of Human Genetics, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Peter A. Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Germany
- Department of Medicine, Division of Hematology and Oncology, University of California at Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - Brooke L. Fridley
- Department of Biostatistics, University of Kansas Medical Center, Kansas City, KS, USA
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | | | - Graham G. Giles
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | - Rosalind Glasspool
- CRUK Clinical Trials Unit, The Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK
| | - Marc T. Goodman
- Cancer Prevention and Control, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Community and Population Health Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jacek Gronwald
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Philipp Harter
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | - Hanis N. Hasmad
- Cancer Research Initiatives Foundation, Sime Darby Medical Center, Subang Jaya, Malaysia
| | - Alexander Hein
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen-Nuremberg Comprehensive Cancer Center, Erlangen EMN, Germany
| | - Florian Heitz
- Department of Gynaecology and Gynaecologic Oncology, Kliniken Essen-Mitte/ Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
- Department of Gynaecology and Gynaecologic Oncology, Dr. Horst Schmidt Kliniken Wiesbaden, Wiesbaden, Germany
| | | | - Peter Hillemanns
- Gynecology Research Unit, Hannover Medical School, Hannover, Germany
| | - Claus K. Hogdall
- Department of Gynaecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Estrid Hogdall
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Pathology, Molecular Unit, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Satoyo Hosono
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | | | - Anna Jakubowska
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Allan Jensen
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Bu-Tian Ji
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Beth Y. Karlan
- Women’s Cancer Program at the Samuel Oschin Comprehensive, Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Melissa Kellar
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, OR, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Lambertus A. Kiemeney
- Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - Camilla Krakstad
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Susanne K. Kjaer
- Department of Gynaecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
- Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Jolanta Kupryjanczyk
- Department of Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Robert A. Vierkant
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Diether Lambrechts
- Vesalius Research Center, VIB, University of Leuven, Leuven, Belgium
- Department of Oncology, Laboratory for Translational Genetics, University of Leuven, Belgium
| | - Sandrina Lambrechts
- Division of Gynecologic Oncology; Leuven Cancer Institute, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Nhu D. Le
- Cancer Control Research, BC Cancer Agency, Vancouver, BC, Canada
| | - Alice W. Lee
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Shashi Lele
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Arto Leminen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Jenny Lester
- Women’s Cancer Program at the Samuel Oschin Comprehensive, Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Douglas A. Levine
- Department of Surgery, Gynecology Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Dong Liang
- College of Pharmacy and Health Sciences, Texas Southern University, Houston, TX, USA
| | - Boon Kiong Lim
- Department of Obstetrics and Gynaecology, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Jolanta Lissowska
- Department of Cancer Epidemiology and Prevention, M. Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Karen Lu
- Department of Gynecologic Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jan Lubinski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Lene Lundvall
- Department of Gynaecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Leon F.A.G. Massuger
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Keitaro Matsuo
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Valerie McGuire
- Department of Health Research and Policy - Epidemiology, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Ian McNeish
- CRUK Clinical Trials Unit, The Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK
| | - Usha Menon
- Women’s Cancer, UCL EGA Institute for Women’s Health, London, UK
| | - Roger L. Milne
- Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | - Francesmary Modugno
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
- Women’s Cancer Research Program, Magee-Women’s Research Institute and University of Pittsburgh Cancer Institute, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Lotte Thomsen
- Department of Pathology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Kirsten B. Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Roberta B. Ness
- The University of Texas School of Public Health, Houston, TX, USA
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Ursula Eilber
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Kunle Odunsi
- Department of Gynecologic Oncology, Roswell Park Cancer Institute, Buffalo, NY
| | - Sara H. Olson
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Irene Orlow
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Sandra Orsulic
- Women’s Cancer Program at the Samuel Oschin Comprehensive, Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Rachel Palmieri Weber
- Department of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA
| | - James Paul
- CRUK Clinical Trials Unit, The Beatson West of Scotland Cancer Centre, 1053 Great Western Road, Glasgow G12 0YN, UK
| | - Celeste L. Pearce
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
- Department of Epidemiology, University of Michigan, 1415 Washington Heights, Ann Arbor, Michigan, USA
| | - Tanja Pejovic
- Department of Obstetrics & Gynecology, Oregon Health & Science University, Portland, OR, USA
- Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Liisa M. Pelttari
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Central Hospital, Helsinki, HUS, Finland
| | - Malcolm C. Pike
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Elizabeth M. Poole
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Eva Schernhammer
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Harvey A. Risch
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, CT, USA
| | - Barry Rosen
- Department of Gynecology-Oncology, Princess Margaret Hospital, and Department of Obstetrics and Gynecology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Mary Anne Rossing
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Joseph H. Rothstein
- Department of Health Research and Policy-Epidemiology, Stanford University School of Medicine, Stanford, CA, USA
| | - Anja Rudolph
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Ingo B. Runnebaum
- Department of Gynecology, Friedrich Schiller University, Jena, Germany
| | - Iwona K. Rzepecka
- Department of Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Helga B. Salvesen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Ira Schwaab
- Institut für Humangenetik, Wiesbaden, Germany
| | - Xiao-Ou Shu
- Epidemiology Center and Vanderbilt, Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Yurii B. Shvetsov
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Hawaii, USA
| | - Nadeem Siddiqui
- Department of Gynaecological Oncology, Glasgow Royal Infirmary, Glasgow, G31 2ER, UK
| | - Honglin Song
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Melissa C. Southey
- Department of Pathology, University of Melbourne, Parkville, Victoria, Australia
| | | | - Lara Sucheston-Campbell
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Soo-Hwang Teo
- Cancer Research Initiatives Foundation, Sime Darby Medical Center, Subang Jaya, Malaysia
- University Malaya Medical Centre, University of Malaya, Kuala Lumpur, Maylaysia
| | - Kathryn L. Terry
- Obstetrics and Gynecology Center, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Pamela J. Thompson
- Cancer Prevention and Control, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Biomedical Sciences, Community and Population Health Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Ingvild L. Tangen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Centre for Cancer Biomarkers, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Shelley S. Tworoger
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Anne M. van Altena
- Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Ignace Vergote
- Division of Gynecologic Oncology; Leuven Cancer Institute, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Christine S. Walsh
- Women’s Cancer Program at the Samuel Oschin Comprehensive, Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Shan Wang-Gohrke
- German Cancer Research Center (DKFZ), Division of Cancer Epidemiology, Heidelberg, Germany
| | - Nicolas Wentzensen
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Alice S. Whittemore
- Department of Health Research and Policy-Epidemiology, Stanford University School of Medicine, Stanford, CA, USA
| | - Kristine G. Wicklund
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA
| | - Lynne R. Wilkens
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Hawaii, USA
| | - Anna H. Wu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Xifeng Wu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yin-Ling Woo
- Department of Obstetrics and Gynaecology, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Hannah Yang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Wei Zheng
- Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Argyrios Ziogas
- Genetic Epidemiology Research Institute, UCI Center for Cancer Genetics Research and Prevention, School of Medicine, Department of Epidemiology, University of California Irvine, Irvine, CA, USA
| | - Ernest Amankwah
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
- Clinical and Translational Research Organization, All Children’s Hospital Johns Hopkins Medicine, St Petersburg, FL
| | - Andrew Berchuck
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | | | - Joellen M. Schildkraut
- Cancer Prevention, Detection & Control Research Program, Duke Cancer Institute, Durham, NC, USA
| | - Linda E. Kelemen
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Susan J. Ramus
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Alvaro N.A. Monteiro
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
| | - Ellen L. Goode
- Department of Health Science Research, Division of Epidemiology, Mayo Clinic, Rochester, MN, USA
| | - Steven A. Narod
- Women’s College Research Institute, University of Toronto, Toronto, Ontario, Canada
| | - Simon A. Gayther
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | - Paul D. P. Pharoah
- Department of Public Health and Primary Care, The Centre for Cancer Epidemiology, University of Cambridge, Strange ways Research Laboratory, Cambridge, UK
- The Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Thomas A. Sellers
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
| | - Catherine M. Phelan
- Department of Cancer Epidemiology, Division of Population Sciences, Moffitt Cancer Center, Tampa, FL, USA
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Klf10 regulates odontoblast differentiation and mineralization via promoting expression of dentin matrix protein 1 and dentin sialophosphoprotein genes. Cell Tissue Res 2015; 363:385-98. [PMID: 26310138 DOI: 10.1007/s00441-015-2260-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 07/28/2015] [Indexed: 01/31/2023]
Abstract
Klf10, a member of the Krüppel-like family of transcription factors, is critical for osteoblast differentiation, bone formation and mineralization. However, whether Klf10 is involved in odontoblastic differentiation and tooth development has not been determined. In this study, we investigate the expression patterns of Klf10 during murine tooth development in vivo and its role in odontoblastic differentiation in vitro. Klf10 protein was expressed in the enamel organ and the underlying mesenchyme, ameloblasts and odontoblasts at early and later stages of murine molar formation. Furthermore, the expression of Klf10, Dmp1, Dspp and Runx2 was significantly elevated during the process of mouse dental papilla mesenchymal differentiation and mineralization. The overexpression of Klf10 induced dental papilla mesenchymal cell differentiation and mineralization as detected by alkaline phosphatase staining and alizarin red S assay. Klf10 additionally up-regulated the expression of odontoblastic differentiation marker genes Dmp1, Dspp and Runx2 in mouse dental papilla mesenchymal cells. The molecular mechanism of Klf10 in controlling Dmp1 and Dspp expression is thus to activate their regulatory regions in a dosage-dependent manner. Our results suggest that Klf10 is involved in tooth development and promotes odontoblastic differentiation via the up-regulation of Dmp1 and Dspp transcription.
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Presnell JS, Schnitzler CE, Browne WE. KLF/SP Transcription Factor Family Evolution: Expansion, Diversification, and Innovation in Eukaryotes. Genome Biol Evol 2015; 7:2289-309. [PMID: 26232396 PMCID: PMC4558859 DOI: 10.1093/gbe/evv141] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2015] [Indexed: 11/13/2022] Open
Abstract
The Krüppel-like factor and specificity protein (KLF/SP) genes play key roles in critical biological processes including stem cell maintenance, cell proliferation, embryonic development, tissue differentiation, and metabolism and their dysregulation has been implicated in a number of human diseases and cancers. Although many KLF/SP genes have been characterized in a handful of bilaterian lineages, little is known about the KLF/SP gene family in nonbilaterians and virtually nothing is known outside the metazoans. Here, we analyze and discuss the origins and evolutionary history of the KLF/SP transcription factor family and associated transactivation/repression domains. We have identified and characterized the complete KLF/SP gene complement from the genomes of 48 species spanning the Eukarya. We have also examined the phylogenetic distribution of transactivation/repression domains associated with this gene family. We report that the origin of the KLF/SP gene family predates the divergence of the Metazoa. Furthermore, the expansion of the KLF/SP gene family is paralleled by diversification of transactivation domains via both acquisitions of pre-existing ancient domains as well as by the appearance of novel domains exclusive to this gene family and is strongly associated with the expansion of cell type complexity.
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Affiliation(s)
| | - Christine E Schnitzler
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health
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Harris S, Johnson S, Duncan JW, Udemgba C, Meyer JH, Albert PR, Lomberk G, Urrutia R, Ou XM, Stockmeier CA, Wang JM. Evidence revealing deregulation of the KLF11-MAO A pathway in association with chronic stress and depressive disorders. Neuropsychopharmacology 2015; 40:1373-82. [PMID: 25502632 PMCID: PMC4397395 DOI: 10.1038/npp.2014.321] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 10/08/2014] [Accepted: 10/23/2014] [Indexed: 12/18/2022]
Abstract
The biochemical pathways underlying major depressive disorder (MDD) and chronic stress are not well understood. However, it has been reported that monoamine oxidase A (MAO A, a major neurotransmitter-degrading enzyme) is significantly increased in the brains of human subjects affected with MDD and rats exposed to chronic social defeat (CSD) stress, which is used to model depression. In the current study, we compared the protein levels of a MAO A-transcriptional activator, Kruppel-like factor 11 (KLF11 , also recognized as transforming growth factor-beta-inducible early gene 2) between the brains of 18 human subjects with MDD and 18 control subjects. We found that, indeed, the expression of KLF11 is increased by 36% (p<0.02) in the postmortem prefrontal cortex of human subjects with MDD compared with controls. We also observed a positive correlation between KLF11 levels and those of its target gene, MAO A, both in association with MDD. KLF11 protein expression was also increased by 44% (p<0.02) in the frontal cortex of KLF11 wild-type mice (Klf11(+/+)) vs Klf11(-/-) when both exposed to CSD stress. In contrast, locomotor activities, central box duration and sucrose preference were significantly reduced in the stressed Klf11(+/+) mice, suggesting that Klf11(+/+) mice are more severely affected by the stress model compared with Klf11(-/-) mice. These results serve to assign an important role of KLF11 in upregulating MAO A in MDD and chronic social stress, suggesting that inhibition of the pathways regulated by this transcription factor may aid in the therapeutics of neuropsychiatric illnesses. Thus, the new knowledge derived from the current study extends our understanding of transcriptional mechanisms that are operational in the pathophysiology of common human diseases and thus bears significant biomedical relevance.
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Affiliation(s)
- Sharonda Harris
- Department of Psychiatry and Human Behavior, Jackson, MS, USA
| | | | - Jeremy W Duncan
- Department of Psychiatry and Human Behavior, Jackson, MS, USA,Program in Neuroscience, Jackson, MS, USA
| | - Chinelo Udemgba
- Department of Psychiatry and Human Behavior, Jackson, MS, USA
| | - Jeffrey H Meyer
- Centre for Addiction and Mental Health and Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Paul R Albert
- Ottawa Hospital Research Institute (Neuroscience), Ottawa, Ontario, Canada
| | - Gwen Lomberk
- Epigenetics and Chromatin Dynamics Laboratory, GI Research Unit, Mayo Clinic, Rochester, MN, USA
| | - Raul Urrutia
- Epigenetics and Chromatin Dynamics Laboratory, GI Research Unit, Mayo Clinic, Rochester, MN, USA
| | - Xiao-Ming Ou
- Department of Psychiatry and Human Behavior, Jackson, MS, USA
| | - Craig A Stockmeier
- Department of Psychiatry and Human Behavior, Jackson, MS, USA,Department of Psychiatry, Case Western Reserve University, Cleveland, OH, USA
| | - Jun Ming Wang
- Department of Psychiatry and Human Behavior, Jackson, MS, USA,Program in Neuroscience, Jackson, MS, USA,Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA,Department of Pathology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS 39216, USA, Tel: +1-601-984-4644, Fax: +1-601-984-5899, E-mail:
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Wang G, Li X, Tian W, Wang Y, Wu D, Sun Z, Zhao E. Promoter DNA methylation is associated withKLF11expression in epithelial ovarian cancer. Genes Chromosomes Cancer 2015; 54:453-62. [PMID: 25931269 DOI: 10.1002/gcc.22257] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/09/2015] [Indexed: 01/19/2023] Open
Affiliation(s)
- Guan Wang
- Department of Obstetrics and Gynecology; Tianjin Central Hospital of Obstetrics and Gynecology; Tianjin 300100 China
| | - Xianfeng Li
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan 410078 China
| | - Weiping Tian
- Tianjin Research Center of Basic Medical Science; Tianjin Medical University; Tianjin 300070 China
| | - Yan Wang
- Institute of Psychology, Chinese Academy of Sciences; Beijing 100101 China
| | - Dandan Wu
- Department of Obstetrics and Gynecology; Tianjin Central Hospital of Obstetrics and Gynecology; Tianjin 300100 China
| | - Zhongsheng Sun
- Beijing Institute of Life Science, Chinese Academy of Science; Beijing 100101 China
| | - Enfeng Zhao
- Department of Obstetrics and Gynecology; Chinese PLA General Hospital; Beijing 100853 China
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Duncan J, Wang N, Zhang X, Johnson S, Harris S, Zheng B, Zhang Q, Rajkowska G, Miguel-Hidalgo JJ, Sittman D, Ou XM, Stockmeier CA, Wang JM. Chronic Social Stress and Ethanol Increase Expression of KLF11, a Cell Death Mediator, in Rat Brain. Neurotox Res 2015; 28:18-31. [PMID: 25739536 DOI: 10.1007/s12640-015-9524-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 01/20/2015] [Accepted: 02/19/2015] [Indexed: 02/06/2023]
Abstract
Major depressive disorder and alcoholism are significant health burdens that can affect executive functioning, cognitive ability, job responsibilities, and personal relationships. Studies in animal models related to depression or alcoholism reveal that the expression of Krüppel-like factor 11 (KLF11, also called TIEG2) is elevated in frontal cortex, which suggests that KLF11 may play a role in stress- or ethanol-induced psychiatric conditions. KLF11 is a transcriptional activator of monoamine oxidase A and B, but also serves other functions in cell cycle regulation and apoptotic cell death. In the present study, immunohistochemistry was used to quantify intensity of nuclear KLF11, combined with an unbiased stereological approach to assess nuclei in fronto-limbic, limbic, and other brain regions of rats exposed chronically to social defeat or ethanol. KLF11 immunoreactivity was increased significantly in the medial prefrontal cortex, frontal cortex, and hippocampus of both stressed rats and rats fed ethanol. However, expression of KLF11 protein was not significantly affected in the thalamus, hypothalamus, or amygdala in either treatment group compared to respective control rats. Triple-label immunofluorescence revealed that KLF11 protein was localized in nuclei of neurons and astrocytes. KLF11 was also co-localized with the immunoreactivity of cleaved caspase-3. In addition, Western blot analysis revealed a significant reduction in anti-apoptotic protein, Bcl-xL, but an increase of caspase-3 expression in the frontal cortex of ethanol-treated rats compared to ethanol-preferring controls. Thus, KLF11 protein is up-regulated following chronic exposure to stress or ethanol in a region-specific manner and may contribute to pro-apoptotic signaling in ethanol-treated rats. Further investigation into the KLF11 signaling cascade as a mechanism for neurotoxicity and cell death in depression and alcoholism may provide novel pharmacological targets to lessen brain damage and maximize neuroprotection in these disorders.
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Affiliation(s)
- Jeremy Duncan
- Program in Neuroscience, University of Mississippi Medical Center, Jackson, MS, USA
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Liu WJ, Lo CF, Kou GH, Leu JH, Lai YJ, Chang LK, Chang YS. The promoter of the white spot syndrome virus immediate-early gene WSSV108 is activated by the cellular KLF transcription factor. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 49:7-18. [PMID: 25445906 DOI: 10.1016/j.dci.2014.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/24/2014] [Accepted: 10/25/2014] [Indexed: 06/04/2023]
Abstract
A series of deletion and mutation assays of the white spot syndrome virus (WSSV) immediate-early gene WSSV108 promoter showed that a Krüppel-like factor (KLF) binding site located from -504 to -495 (relative to the transcription start site) is important for the overall level of WSSV108 promoter activity. Electrophoretic mobility shift assays further showed that overexpressed recombinant Penaeus monodon KLF (rPmKLF) formed a specific protein-DNA complex with the (32)P-labeled KLF binding site of the WSSV108 promoter, and that higher levels of Litopenaeus vannamei KLF (LvKLF) were expressed in WSSV-infected shrimp. A transactivation assay indicated that the WSSV108 promoter was strongly activated by rPmKLF in a dose-dependent manner. Lastly, we found that specific silencing of LvKLF expression in vivo by dsRNA injection dramatically reduced both WSSV108 expression and WSSV replication. We conclude that shrimp KLF is important for WSSV genome replication and gene expression, and that it binds to the WSSV108 promoter to enhance the expression of this immediate-early gene.
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Affiliation(s)
- Wang-Jing Liu
- Department of Earth and Life Science, College of Science, University of Taipei, Taipei 100, Taiwan
| | - Chu-Fang Lo
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Guang-Hsiung Kou
- Department of Life Science, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Jiann-Horng Leu
- Institute of Marine Biology, College of Life Sciences, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Ying-Jang Lai
- Department of Food Science, College of Science and Engineering, National Quemoy University, Kinmen 892, Taiwan
| | - Li-Kwan Chang
- Department of Biochemical Science and Technology, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Yun-Shiang Chang
- Department of Molecular Biotechnology, College of Biotechnology and Bioresources, Da-Yeh University, Changhua 515, Taiwan.
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Fung SY, Lee ML, Tan NH. Molecular mechanism of cell death induced by king cobra (Ophiophagus hannah) venom l-amino acid oxidase. Toxicon 2015; 96:38-45. [PMID: 25615711 DOI: 10.1016/j.toxicon.2015.01.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/09/2015] [Accepted: 01/20/2015] [Indexed: 01/11/2023]
Abstract
Snake venom LAAOs have been reported to exhibit a wide range of pharmacological activities, including cytotoxic, edema-inducing, platelet aggregation-inducing/platelet aggregation-inhibiting, bactericidal and antiviral activities. A heat-stable form of l-amino acid oxidase isolated from king cobra (Ophiophagus hannah) venom (OH-LAAO) has been shown to exhibit very potent cytotoxicity against human tumorigenic cells but not in their non-tumorigenic counterparts, and the cytotoxicity was due to the apoptosis-inducing effect of the enzyme. In this work, the molecular mechanism of cell death induced by OH-LAAO was investigated. The enzyme exerts its apoptosis-inducing effect presumably via both intrinsic and extrinsic pathways as suggested by the increase in caspase-8 and -9 activities. Oligonucleotide microarray analysis showed that the expression of a total of 178 genes was significantly altered as a result of oxidative stress induced by the hydrogen peroxide generated by the enzyme. Of the 178 genes, at least 27 genes are involved in apoptosis and cell death. These alterations of gene expression was presumably caused by the direct cytotoxic effect of H2O2 generated during the enzymatic reaction, as well as the non-specific oxidative modifications of signaling molecules that eventually lead to apoptosis and cell death. The very substantial up-regulation of cytochrome P450 genes may also contribute to the potent cytotoxic action of OH-LAAO by producing excessive reactive oxygen species (ROS). In conclusion, the potent apoptosis inducing activity of OH-LAAO was likely due to the direct cytotoxic effect of H2O2 generated during the enzymatic reaction, as well as the non-specific oxidation of signalling molecules.
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Affiliation(s)
- Shin Yee Fung
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Mui Li Lee
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nget Hong Tan
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Ruiz-Romero M, Blanco E, Paricio N, Serras F, Corominas M. Cabut/dTIEG associates with the transcription factor Yorkie for growth control. EMBO Rep 2015; 16:362-9. [PMID: 25572844 PMCID: PMC4364875 DOI: 10.15252/embr.201439193] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Drosophila transcription factor Cabut/dTIEG (Cbt) is a growth regulator, whose expression is modulated by different stimuli. Here, we determine Cbt association with chromatin and identify Yorkie (Yki), the transcriptional co-activator of the Hippo (Hpo) pathway as its partner. Cbt and Yki co-localize on common gene promoters, and the expression of target genes varies according to changes in Cbt levels. Down-regulation of Cbt suppresses the overgrowth phenotypes caused by mutations in expanded (ex) and yki overexpression, whereas its up-regulation promotes cell proliferation. Our results imply that Cbt is a novel partner of Yki that is required as a transcriptional co-activator in growth control.
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Affiliation(s)
- Marina Ruiz-Romero
- Departament de Genètica, Facultat de Biologia and Institut de Biomedicina (IBUB) de la Universitat de Barcelona, Barcelona, Spain
| | - Enrique Blanco
- Departament de Genètica, Facultat de Biologia and Institut de Biomedicina (IBUB) de la Universitat de Barcelona, Barcelona, Spain Centre for Genomic Regulation (CRG), Barcelona, Spain
| | - Nuria Paricio
- Departamento de Genética, Facultad de Ciencias Biológicas, Universidad de Valencia, Valencia, Spain
| | - Florenci Serras
- Departament de Genètica, Facultat de Biologia and Institut de Biomedicina (IBUB) de la Universitat de Barcelona, Barcelona, Spain
| | - Montserrat Corominas
- Departament de Genètica, Facultat de Biologia and Institut de Biomedicina (IBUB) de la Universitat de Barcelona, Barcelona, Spain
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Abstract
Krüppel-like factors (KLFs) comprise a highly conserved family of zinc finger transcription factors, that are involved in a plethora of cellular processes, ranging from proliferation and apoptosis to differentiation, migration and pluripotency. During the last few years, evidence on their role and deregulation in different human cancers has been emerging. This review will discuss current knowledge on Krüppel-like transcription in the epithelial-mesenchymal transition (EMT), invasion and metastasis, with a focus on epithelial cancer biology and the extensive interface with pluripotency. Furthermore, as KLFs are able to mediate different outcomes, important influences of the cellular and microenvironmental context will be highlighted. Finally, we attempt to integrate diverse findings on KLF functions in EMT and stem cell biology to ft in the current model of cellular plasticity as a tool for successful metastatic dissemination.
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Kim JK, Lee KS, Chang HY, Lee WK, Lee JI. Progression of diet induced nonalcoholic steatohepatitis is accompanied by increased expression of Kruppel-like-factor 10 in mice. J Transl Med 2014; 12:186. [PMID: 24986741 PMCID: PMC4086692 DOI: 10.1186/1479-5876-12-186] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 06/24/2014] [Indexed: 12/16/2022] Open
Abstract
Background Kruppel-like-factor (KLF) 10 is identified as transforming growth factor (TGF) β inducible early gene and is reported to suppress lipogenic genes. Although previous studies report that TGFβ plays an important role in progression of nonalcoholic steatohepatitis (NASH) by regulating liver fibrosis, the association of KLF10 and NASH has never been explored. Thus we evaluated expressions and changes of KLF10 in diet induced NASH and in NASH which was alleviated by ursodeoxycholic acid (UDCA). We also assessed KLF10 in quiescent and activated hepatic stellate cells (HSCs). Methods C57BL/6 mice were given high fat, sucrose diet (HFSD) at least for 12 weeks up to 48 weeks and sacrificed at 12, 24 and 48 weeks thereafter. In other groups, either standard diet (SD) or HFSD was given for 24 weeks at which point mice fed with HFSD were divided into two groups, and were given either UDCA in combination with HFSD or vehicle with HFSD. Mice under SD were given vehicle. HSCs were isolated from C57BL/6 mice in order to evaluated KLF10 expression in activated HSCs. Results The mice were found to acquire liver steatosis and inflammation starting from week 12 of HFSD feeding, although significant liver fibrosis was noticed by week 24. Increased TGFβ and collagen α1(I) (Col1α(I)) expression was also apparent from week 24. However, expression of KLF10 mRNA started to increase from week 12, earlier than TGFβ gene. Up-regulation of KLF10 was accompanied by suppressed carbohydrate response element-binding protein (ChREBP) that is known to be protective against insulin resistance. The mice fed with HFSD and UDCA had decreased Colα(I) mRNA that was coincided with reduced TGFβ and KLF10 expression. Expression of ChREBP was also recovered by UDCA administration. Enhanced KLF10 was noticed in activated HSCs when quiescent cell showed minimal expression. Conclusions Our study demonstrated that KLF10 expression was significantly increased in diet induced NASH and collagen producing activated HSCs. We also noticed that this up-regulation of KLF10 was accompanied by increased TGFβ signaling genes and suppressed ChREBP expression. These observations suggest possible association of KLF10 and NASH progression.
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Affiliation(s)
| | | | | | | | - Jung Il Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, 211 Eunju-ro, Gangnam-gu, Seoul 135-720, Republic of Korea.
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Zhang H, Chen Q, Jiao T, Cui A, Sun X, Fang W, Xie L, Liu Y, Fang F, Chang Y. Involvement of KLF11 in hepatic glucose metabolism in mice via suppressing of PEPCK-C expression. PLoS One 2014; 9:e89552. [PMID: 24586865 PMCID: PMC3935883 DOI: 10.1371/journal.pone.0089552] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 01/22/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Abnormal hepatic gluconeogenesis is related to hyperglycemia in mammals with insulin resistance. Despite the strong evidences linking Krüppel-like factor 11 (KLF11) gene mutations to development of Type 2 diabetes, the precise physiological functions of KLF11 in vivo remain largely unknown. RESULTS In current investigation, we showed that KLF11 is involved in modulating hepatic glucose metabolism in mice. Overexpression of KLF11 in primary mouse hepatocytes could inhibit the expression of gluconeogenic genes, including phosphoenolpyruvate carboxykinase (cytosolic isoform, PEPCK-C) and peroxisome proliferator-activated receptor γ coactivator-1α (PGC-1α), subsequently decreasing the cellular glucose output. Diabetic mice with overexpression of KLF11 gene in livers significantly ameliorated hyperglycemia and glucose intolerance; in contrast, the knockdown of KLF11 expression in db/m and C57BL/6J mice livers impaired glucose tolerance. CONCLUSIONS Our data strongly indicated the involvement of KLF11 in hepatic glucose homeostasis via modulating the expression of PEPCK-C.
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Affiliation(s)
- Huabing Zhang
- Department of Biochemistry & Molecular Biology, School of Basic Medicine, Anhui Medical University, Hefei, China
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Science, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Qi Chen
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Science, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Tao Jiao
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Science, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Anfang Cui
- Department of Biochemistry, Jining Medical University, Jining, China
| | - Xiujing Sun
- Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory for Precancerous Lesion of Digestive Diseases, Beijing Digestive Disease Center, Beijing, China
| | - Weijun Fang
- Department of Chemistry, School of Basic Medicine, Anhui Medical University, Hefei, China
| | - Liwei Xie
- Integrative and Molecular Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Yang Liu
- Department of Endocrinology, The Hospital Affiliated to Liaoning University of Traditional Chinese Medicine, Shenyang, China
- * E-mail: (YC); (YL)
| | - Fude Fang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Science, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yongsheng Chang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Science, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- * E-mail: (YC); (YL)
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Song M, Zhang Y, Katzaroff AJ, Edgar BA, Buttitta L. Hunting complex differential gene interaction patterns across molecular contexts. Nucleic Acids Res 2014; 42:e57. [PMID: 24482443 PMCID: PMC3985659 DOI: 10.1093/nar/gku086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Heterogeneity in genetic networks across different signaling molecular contexts can suggest molecular regulatory mechanisms. Here we describe a comparative chi-square analysis (CPχ2) method, considerably more flexible and effective than other alternatives, to screen large gene expression data sets for conserved and differential interactions. CPχ2 decomposes interactions across conditions to assess homogeneity and heterogeneity. Theoretically, we prove an asymptotic chi-square null distribution for the interaction heterogeneity statistic. Empirically, on synthetic yeast cell cycle data, CPχ2 achieved much higher statistical power in detecting differential networks than alternative approaches. We applied CPχ2 to Drosophila melanogaster wing gene expression arrays collected under normal conditions, and conditions with overexpressed E2F and Cabut, two transcription factor complexes that promote ectopic cell cycling. The resulting differential networks suggest a mechanism by which E2F and Cabut regulate distinct gene interactions, while still sharing a small core network. Thus, CPχ2 is sensitive in detecting network rewiring, useful in comparing related biological systems.
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Affiliation(s)
- Mingzhou Song
- Department of Computer Science, New Mexico State University, Las Cruces, NM 88003, USA, Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA, Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, WA 98195, USA and German Cancer Research Center (DKFZ)-Center for Molecular Biology Heidelberg (ZMBH) Alliance, Im Neuenheimer Feld 282, D-69120 Heidelberg, Germany
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Udemgba C, Johnson S, Stockmeier CA, Luo J, Albert PR, Wang J, May WL, Rajkowska G, Harris S, Sittman DB, Ou XM. The expression of KLF11 (TIEG2), a monoamine oxidase B transcriptional activator in the prefrontal cortex of human alcohol dependence. Alcohol Clin Exp Res 2013; 38:144-51. [PMID: 23915421 DOI: 10.1111/acer.12229] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 05/22/2013] [Indexed: 12/24/2022]
Abstract
BACKGROUND The biochemical pathways underlying alcohol abuse and dependence are not well understood, although brain cell loss and neurotoxicity have been reported in subjects with alcohol dependence. Monoamine oxidase B (MAO B; an enzyme that catabolizes neurotransmitters such as dopamine) is consistently increased in this psychiatric illness. MAO B has been implicated in the pathogenesis of alcohol dependence and alcohol-induced brain neurotoxicity. Recently, the cell growth inhibitor protein, Kruppel-like factor 11 (KLF11), has been reported to be an MAO transcriptional activator. KLF11 is also known as TIEG2 (transforming growth factor-beta-inducible early gene 2) and mediates apoptotic cell death. This study investigates the protein expression of KLF11 and its relationship with MAO B using human postmortem prefrontal cortex from subjects with alcohol dependence. METHODS Twelve subjects with alcohol dependence and the respective psychiatrically normal control subjects were investigated. Expression of KLF11 and MAO B proteins in the prefrontal cortex was measured by Western blot analysis. Correlation studies involving KLF11 and MAO B protein expression were performed. Localization of KLF11 in the human prefrontal cortex was also determined by immunohistochemistry. RESULTS Levels of KLF11 protein were significantly increased by 44% (p < 0.03) in the postmortem prefrontal cortex of subjects with alcohol dependence as compared to age- and gender-matched, psychiatrically normal control subjects. Furthermore, KLF11 levels were significantly and positively correlated with both the increased MAO B protein levels and blood alcohol content in alcohol-dependent subjects. In addition, KLF11 protein expression was visualized in both neuronal and glial cells. CONCLUSIONS This novel study shows the important role of KLF11, an MAO transcriptional activator, in human alcohol dependence. It further supports that the KLF11-MAO B cell death cascade may contribute to chronic alcohol-induced brain damage. This argues a case for KLF11-MAO B inhibition as a novel therapeutic strategy that may impact this highly prevalent illness.
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Affiliation(s)
- Chinelo Udemgba
- Department of Psychiatry and Human Behavior , University of Mississippi Medical Center, Jackson, Mississippi
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Zhang H, Chen Q, Yang M, Zhu B, Cui Y, Xue Y, Gong N, Cui A, Wang M, Shen L, Zhang S, Fang F, Chang Y. Mouse KLF11 regulates hepatic lipid metabolism. J Hepatol 2013. [PMID: 23183531 DOI: 10.1016/j.jhep.2012.11.024] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Missense mutations in human Krüppel-like factor 11 (KLF11) lead to the development of diabetes, as a result of impaired insulin synthesis in the pancreas. However, the role of KLF11 in peripheral tissues is largely unknown. The aim of this study is to evaluate the role of KLF11 in the regulation of hepatic lipid homeostasis using different mouse models. METHODS Adenoviruses expressing KLF11 (Ad-KLF11) or KLF11-specific shRNA (Ad-shKLF11) were injected into db/db diabetic, high-fat diet-induced obese (DIO), or normal C57BL/6J mice. Histological analysis of the fatty liver phenotype and biochemical analysis of hepatic and serum TG levels in these mice were performed. The molecular mechanism by which KLF11 regulates lipid metabolism in primary hepatocytes and mouse livers was explored. RESULTS The expression of the transcription factor KLF11 gene is dysregulated in the livers of db/db and DIO mice. Adenovirus-mediated overexpression of KLF11 in the livers of db/db and DIO mice activates the PPARα signaling pathway, subsequently markedly improving the fatty liver phenotype. Conversely, knockdown of KLF11, by adenovirus (Ad-shKLF11) in livers of wild type C57BL/6J and db/m mice, increases hepatic triglyceride (TG) levels, owing to decreased fatty acid oxidation. Finally, the treatment of diabetic mice with Ad-shPPARα abolishes KLF11 stimulatory effects on the expression of genes involved in fatty acid oxidation and inhibitory effects on hepatic TG content. In contrast, PPARα rescue restores the increased hepatic TG levels in Ad-shKLF11-infected db/m mice to normal levels. CONCLUSIONS KLF11 is an important regulator of hepatic lipid metabolism.
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Affiliation(s)
- Huabing Zhang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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A novel role of the Sp/KLF transcription factor KLF11 in arresting progression of endometriosis. PLoS One 2013; 8:e60165. [PMID: 23555910 PMCID: PMC3610699 DOI: 10.1371/journal.pone.0060165] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 02/22/2013] [Indexed: 12/20/2022] Open
Abstract
Endometriosis affects approximately 10% of young, reproductive-aged women. Disease associated pelvic pain; infertility and sexual dysfunction have a significant adverse clinical, social and financial impact. As precise disease etiology has remained elusive, current therapeutic strategies are empiric, unfocused and often unsatisfactory. Lack of a suitable genetic model has impaired further translational research in the field. In this study, we evaluated the role of the Sp/KLF transcription factor KLF11/Klf11 in the pathogenesis of endometriosis. KLF11, a human disease-associated gene is etiologically implicated in diabetes, uterine fibroids and cancer. We found that KLF11 expression was diminished in human endometriosis implants and further investigated its pathogenic role in Klf11-/- knockout mice with surgically induced endometriotic lesions. Lesions in Klf11-/- animals were large and associated with prolific fibrotic adhesions resembling advanced human disease in contrast to wildtype controls. To determine phenotype-specificity, endometriosis was also generated in Klf9-/- animals. Unlike in Klf11-/- mice, lesions in Klf9-/- animals were neither large, nor associated with a significant fibrotic response. KLF11 also bound to specific elements located in the promoter regions of key fibrosis-related genes from the Collagen, MMP and TGF-β families in endometrial stromal cells. KLF11 binding resulted in transcriptional repression of these genes. In summary, we identify a novel pathogenic role for KLF11 in preventing de novo disease-associated fibrosis in endometriosis. Our model validates in vivo the phenotypic consequences of dysregulated Klf11 signaling. Additionally, it provides a robust means not only for further detailed mechanistic investigation but also the ability to test any emergent translational ramifications thereof, so as to expand the scope and capability for treatment of endometriosis.
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Perakakis N, Danassi D, Alt M, Tsaroucha E, Mehana AE, Rimmer N, Laubner K, Wang H, Wollheim CB, Seufert J, Päth G. Human Krüppel-like factor 11 differentially regulates human insulin promoter activity in β-cells and non-β-cells via p300 and PDX1 through the regulatory sites A3 and CACCC box. Mol Cell Endocrinol 2012; 363:20-6. [PMID: 22801105 DOI: 10.1016/j.mce.2012.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 06/12/2012] [Accepted: 07/07/2012] [Indexed: 11/29/2022]
Abstract
Human Krüppel-like factor 11 (hKLF11) has been characterised to both activate and inhibit human insulin promoter (hInsP) activity. Since KLF11 is capable to differentially regulate genes dependent on recruited cofactors, we investigated the effects of hKLF11 on cotransfected hInsP in both β-cells and non-β-cells. hKLF11 protein interacts with hp300 but not with hPDX1. Overexpressed hKLF11 stimulates PDX1-transactivation of hInsP in HEK293 non-β-cells, but confers inhibition in INS-1E β-cells. Both hKLF11 functions can be neutralised by the p300 inhibitor E1A, increased hp300 levels (INS-1E), dominant negative (DN)-PDX1 and by mutation of the PDX1 binding site A3 or the CACCC box. In summary, hKLF11 differentially regulates hInsP activity depending on the molecular context via modulation of p300:PDX1 interactions with the A3 element and CACCC box. We postulate that KLF11 has a role in fine-tuning insulin transcription in certain cellular situations rather than representing a major transcriptional activator or repressor of the insulin gene.
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Affiliation(s)
- Nikolaos Perakakis
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany
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Fan Y, Guo Y, Zhang J, Subramaniam M, Song CZ, Urrutia R, Chen YE. Krüppel-like factor-11, a transcription factor involved in diabetes mellitus, suppresses endothelial cell activation via the nuclear factor-κB signaling pathway. Arterioscler Thromb Vasc Biol 2012; 32:2981-8. [PMID: 23042817 DOI: 10.1161/atvbaha.112.300349] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Endothelial cell (EC) inflammatory status is critical to many vascular diseases. Emerging data demonstrate that mutations of Krüppel-like factor-11 (KLF11), a gene coding maturity-onset diabetes mellitus of the young type 7 (MODY7), contribute to the development of neonatal diabetes mellitus. However, the function of KLF11 in the cardiovascular system still remains to be uncovered. In this study, we aimed to investigate the role of KLF11 in vascular endothelial inflammation. METHODS AND RESULTS KLF11 is highly expressed in vascular ECs and induced by proinflammatory stimuli. Adenovirus-mediated KLF11 overexpression inhibits expression of tumor necrosis factors-α-induced adhesion molecules. Moreover, small interfering RNA-mediated KLF11 knockdown augments the proinflammatory status in ECs. KLF11 inhibits promoter activity of adhesion molecules induced by tumor necrosis factor-α and nuclear factor-κB p65 overexpression. Mechanistically, KLF11 potently inhibits nuclear factor-κB signaling pathway via physical interaction with p65. Furthermore, KLF11 knockdown results in increased binding of p65 to vascular cell adhesion molecule-1 and E-selectin promoters. At the whole organism level, KLF11(-/-) mice exhibit a significant increase in leukocyte recruitment to ECs after lipopolysaccharide administration. CONCLUSIONS Taken together, our data demonstrate for the first time that KLF11 is a suppressor of EC inflammatory activation, suggesting that KLF11 constitutes a novel potential molecular target for inhibition of vascular inflammatory diseases.
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Affiliation(s)
- Yanbo Fan
- Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI 48109, USA
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Hori K, Ding J, Marcoux Y, Iwashina T, Sakurai H, Tredget EE. Impaired cutaneous wound healing in transforming growth factor-β inducible early gene1 knockout mice. Wound Repair Regen 2012; 20:166-77. [PMID: 22380689 DOI: 10.1111/j.1524-475x.2012.00773.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Transforming growth factor-β inducible early gene (TIEG) is induced by transforming growth factor-β (TGF-β) and acts as the primary response gene in the TGF-β/Smad pathway. TGF-β is a multifunctional growth factor that affects dermal wound healing; however, the mechanism of how TGF-β affects wound healing is still not well understood because of the complexity of its function and signaling pathways. We hypothesize that TIEG may play a role in dermal wound healing, with involvement in wound closure, contraction, and reepithelialization. In this study, we have shown that TIEG1 knockout (TIEG1-/-) mice have a delay in wound closure related to an impairment in wound contraction, granulation tissue formation, collagen synthesis, and reepithelialization. We also found that Smad7 was increased in the wounds and appeared to play a role in this wound healing model in TIEG1-/- mice.
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Affiliation(s)
- Keijiro Hori
- Division of Plastic and Reconstructive Surgery and Critical Care, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
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Lomberk G, Mathison AJ, Grzenda A, Seo S, DeMars CJ, Rizvi S, Bonilla-Velez J, Calvo E, Fernandez-Zapico ME, Iovanna J, Buttar NS, Urrutia R. Sequence-specific recruitment of heterochromatin protein 1 via interaction with Krüppel-like factor 11, a human transcription factor involved in tumor suppression and metabolic diseases. J Biol Chem 2012; 287:13026-39. [PMID: 22318730 PMCID: PMC3339955 DOI: 10.1074/jbc.m112.342634] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/06/2012] [Indexed: 12/17/2022] Open
Abstract
Heterochromatin protein 1 (HP1) proteins are "gatekeepers" of epigenetic gene silencing that is mediated by lysine 9 of histone H3 methylation (H3K9me). Current knowledge supports a paradigm whereby HP1 proteins achieve repression by binding to H3K9me marks and interacting to H3K9 histone methyltransferases (HMTs), such as SUV39H1, which methylate this residue on adjacent nucleosomes thereby compacting chromatin and silencing gene expression. However, the mechanism underlying the recruitment of this epigenetic regulator to target gene promoters remains poorly characterized. In the current study, we reveal for the first time a mechanism whereby HP1 is recruited to promoters by a well characterized Krüppel-like transcription factor (KLF), in a sequence-specific manner, to mediate complex biological phenomena. A PXVXL HP1-interacting domain identified at position 487-491 of KLF11 mediates the binding of HP1α and KLF11 in vitro and in cultured cells. KLF11 also recruits HP1α and its histone methyltransferase, SUV39H1, to promoters to limit KLF11-mediated gene activation. Indeed, a KLF11ΔHP1 mutant derepresses KLF11-regulated cancer genes, by inhibiting HP1-SUV39H1 recruitment, decreasing H3K9me3, while increasing activation-associated marks. Biologically, impairment of KLF11-mediated HP1-HMT recruitment abolishes tumor suppression, providing direct evidence that HP1-HMTs act in a sequence-specific manner to achieve this function rather than its well characterized binding to methylated chromatin without intermediary. Collectively, these studies reveal a novel role for HP1 as a cofactor in tumor suppression, expand our mechanistic understanding of a KLF associated to human disease, and outline cellular and biochemical mechanisms underlying this phenomenon, increasing the specificity of targeting HP1-HMT complexes to gene promoters.
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Affiliation(s)
- Gwen Lomberk
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Angela J. Mathison
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Adrienne Grzenda
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Seungmae Seo
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Cathrine J. DeMars
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Sumera Rizvi
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Juliana Bonilla-Velez
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Ezequiel Calvo
- the Molecular Endocrinology and Oncology Research Center, CHUL Research Center, Quebec 61V 462, Canada, and
| | | | - Juan Iovanna
- INSERM U.624, Parc Scientifique et Technologique de Luminy, Marseille F-13288, France
| | - Navtej S. Buttar
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
| | - Raul Urrutia
- From the Department of Biochemistry and Molecular Biology, Laboratory of Epigenetics and Chromatin Dynamics, GIH Division, and
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Belacortu Y, Weiss R, Kadener S, Paricio N. Transcriptional activity and nuclear localization of Cabut, the Drosophila ortholog of vertebrate TGF-β-inducible early-response gene (TIEG) proteins. PLoS One 2012; 7:e32004. [PMID: 22359651 PMCID: PMC3281117 DOI: 10.1371/journal.pone.0032004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 01/17/2012] [Indexed: 01/26/2023] Open
Abstract
Background Cabut (Cbt) is a C2H2-class zinc finger transcription factor involved in embryonic dorsal closure, epithelial regeneration and other developmental processes in Drosophila melanogaster. Cbt orthologs have been identified in other Drosophila species and insects as well as in vertebrates. Indeed, Cbt is the Drosophila ortholog of the group of vertebrate proteins encoded by the TGF-ß-inducible early-response genes (TIEGs), which belong to Sp1-like/Krüppel-like family of transcription factors. Several functional domains involved in transcriptional control and subcellular localization have been identified in the vertebrate TIEGs. However, little is known of whether these domains and functions are also conserved in the Cbt protein. Methodology/Principal Findings To determine the transcriptional regulatory activity of the Drosophila Cbt protein, we performed Gal4-based luciferase assays in S2 cells and showed that Cbt is a transcriptional repressor and able to regulate its own expression. Truncated forms of Cbt were then generated to identify its functional domains. This analysis revealed a sequence similar to the mSin3A-interacting repressor domain found in vertebrate TIEGs, although located in a different part of the Cbt protein. Using β-Galactosidase and eGFP fusion proteins, we also showed that Cbt contains the bipartite nuclear localization signal (NLS) previously identified in TIEG proteins, although it is non-functional in insect cells. Instead, a monopartite NLS, located at the amino terminus of the protein and conserved across insects, is functional in Drosophila S2 and Spodoptera exigua Sec301 cells. Last but not least, genetic interaction and immunohistochemical assays suggested that Cbt nuclear import is mediated by Importin-α2. Conclusions/Significance Our results constitute the first characterization of the molecular mechanisms of Cbt-mediated transcriptional control as well as of Cbt nuclear import, and demonstrate the existence of similarities and differences in both aspects of Cbt function between the insect and the vertebrate TIEG proteins.
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Affiliation(s)
- Yaiza Belacortu
- Departamento de Genética, Facultad CC Biológicas, Universidad de Valencia, Burjasot, Spain
| | - Ron Weiss
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem, Israel
| | - Sebastian Kadener
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat-Ram, Jerusalem, Israel
| | - Nuria Paricio
- Departamento de Genética, Facultad CC Biológicas, Universidad de Valencia, Burjasot, Spain
- * E-mail:
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Stephens SH, Franks A, Berger R, Palionyte M, Fingerlin TE, Wagner B, Logel J, Olincy A, Ross RG, Freedman R, Leonard S. Multiple genes in the 15q13-q14 chromosomal region are associated with schizophrenia. Psychiatr Genet 2012; 22:1-14. [PMID: 21970977 PMCID: PMC3878876 DOI: 10.1097/ypg.0b013e32834c0c33] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The chromosomal region, 15q13-q14, including the α7 nicotinic acetylcholine receptor gene, CHRNA7, is a replicated region for schizophrenia. This study fine-mapped genes at 15q13-q14 to determine whether the association is unique to CHRNA7. METHODS Family-based and case-control association studies were performed on Caucasian-non-Hispanic and African-American individuals from 120 families as well as 468 individual patients with schizophrenia and 144 well-characterized controls. Single-nucleotide polymorphism (SNP) markers were genotyped, and association analyses carried out for the outcomes of schizophrenia, smoking, and smoking in schizophrenia. RESULTS Three genes were associated with schizophrenia in both ethnic populations: TRPM1, KLF13, and RYR3. Two SNPs in CHRNA7 were associated with schizophrenia in African-Americans, and a second SNP in CHRNA7 was significant for an association with smoking and smoking in schizophrenia in Caucasians. CONCLUSION Results of these studies support association of the 15q13-q14 region with schizophrenia. The broad positive association suggests that more than one 15q gene may be contributing to the disorder, either in combination or through a regulatory mechanism.
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Affiliation(s)
- Sarah H. Stephens
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Alexis Franks
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Ralph Berger
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Milda Palionyte
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Tasha E. Fingerlin
- Preventive Medicine and Biometrics, University of Colorado Denver, Denver, Colorado, USA
| | - Brandie Wagner
- Preventive Medicine and Biometrics, University of Colorado Denver, Denver, Colorado, USA
| | - Judith Logel
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Ann Olincy
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Randal G. Ross
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
| | - Robert Freedman
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
- Veterans Affairs Medical Research Center, Denver, Colorado, USA
| | - Sherry Leonard
- Department of Psychiatry, University of Colorado Denver, Denver, Colorado, USA
- Veterans Affairs Medical Research Center, Denver, Colorado, USA
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49
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Daftary GS, Lomberk GA, Buttar NS, Allen TW, Grzenda A, Zhang J, Zheng Y, Mathison AJ, Gada RP, Calvo E, Iovanna JL, Billadeau DD, Prendergast FG, Urrutia R. Detailed structural-functional analysis of the Krüppel-like factor 16 (KLF16) transcription factor reveals novel mechanisms for silencing Sp/KLF sites involved in metabolism and endocrinology. J Biol Chem 2011; 287:7010-25. [PMID: 22203677 PMCID: PMC3293586 DOI: 10.1074/jbc.m111.266007] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Krüppel-like factor (KLF) proteins have elicited significant attention due to their emerging key role in metabolic and endocrine diseases. Here, we extend this knowledge through the biochemical characterization of KLF16, unveiling novel mechanisms regulating expression of genes involved in reproductive endocrinology. We found that KLF16 selectively binds three distinct KLF-binding sites (GC, CA, and BTE boxes). KLF16 also regulated the expression of several genes essential for metabolic and endocrine processes in sex steroid-sensitive uterine cells. Mechanistically, we determined that KLF16 possesses an activation domain that couples to histone acetyltransferase-mediated pathways, as well as a repression domain that interacts with the histone deacetylase chromatin-remodeling system via all three Sin3 isoforms, suggesting a higher level of plasticity in chromatin cofactor selection. Molecular modeling combined with molecular dynamic simulations of the Sin3a-KLF16 complex revealed important insights into how this interaction occurs at an atomic resolution level, predicting that phosphorylation of Tyr-10 may modulate KLF16 function. Phosphorylation of KLF16 was confirmed by in vivo32P incorporation and controlled by a Y10F site-directed mutant. Inhibition of Src-type tyrosine kinase signaling as well as the nonphosphorylatable Y10F mutation disrupted KLF16-mediated gene silencing, demonstrating that its function is regulatable rather than constitutive. Subcellular localization studies revealed that signal-induced nuclear translocation and euchromatic compartmentalization constitute an additional mechanism for regulating KLF16 function. Thus, this study lends insights on key biochemical mechanisms for regulating KLF sites involved in reproductive biology. These data also contribute to the new functional information that is applicable to understanding KLF16 and other highly related KLF proteins.
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Affiliation(s)
- Gaurang S Daftary
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota 55905, USA.
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A functional family-wide screening of SP/KLF proteins identifies a subset of suppressors of KRAS-mediated cell growth. Biochem J 2011; 435:529-37. [PMID: 21171965 DOI: 10.1042/bj20100773] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
SP/KLF (Specificity protein/Krüppel-like factor) transcription factors comprise an emerging group of proteins that may behave as tumour suppressors. Incidentally, many cancers that display alterations in certain KLF proteins are also associated with a high incidence of KRAS (V-Ki-ras2 Kirsten rat sarcoma viral oncogene homologue) mutations. Therefore in the present paper we investigate whether SP/KLF proteins suppress KRAS-mediated cell growth, and more importantly, the potential mechanisms underlying these effects. Using a comprehensive family-wide screening of the 24 SP/KLF members, we discovered that SP5, SP8, KLF2, KLF3, KLF4, KLF11, KLF13, KLF14, KLF15 and KLF16 inhibit cellular growth and suppress transformation mediated by oncogenic KRAS. Each protein in this subset of SP/KLF members individually inhibits BrdU (5-bromo-2-deoxyuridine) incorporation in KRAS oncogenic-mutant cancer cells. SP5, KLF3, KLF11, KLF13, KLF14 and KLF16 also increase apoptosis in these cells. Using KLF11 as a representative model for mechanistic studies, we demonstrate that this protein inhibits the ability of cancer cells to form both colonies in soft agar and tumour growth in vivo. Molecular studies demonstrate that these effects of KLF11 are mediated, at least in part, through silencing cyclin A via binding to its promoter and leading to cell-cycle arrest in S-phase. Interestingly, similar to KLF11, KLF14 and KLF16 mechanistically share the ability to modulate the expression of cyclin A. Collectively, the present study stringently defines a distinct subset of SP/KLF proteins that impairs KRAS-mediated cell growth, and that mechanistically some members of this subset accomplish this, at least in part, through regulation of the cyclin A promoter.
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