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Simmen FA, Alhallak I, Simmen RCM. Krüppel-like Factor-9 and Krüppel-like Factor-13: Highly Related, Multi-Functional, Transcriptional Repressors and Activators of Oncogenesis. Cancers (Basel) 2023; 15:5667. [PMID: 38067370 PMCID: PMC10705314 DOI: 10.3390/cancers15235667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/16/2023] [Accepted: 11/27/2023] [Indexed: 02/12/2024] Open
Abstract
Specificity Proteins/Krüppel-like Factors (SP/KLF family) are a conserved family of transcriptional regulators. These proteins share three highly conserved, contiguous zinc fingers in their carboxy-terminus, requisite for binding to cis elements in DNA. Each SP/KLF protein has unique primary sequence within its amino-terminal and carboxy-terminal regions, and it is these regions which interact with co-activators, co-repressors, and chromatin-modifying proteins to support the transcriptional activation and repression of target genes. Krüppel-like Factor 9 (KLF9) and Krüppel-like Factor 13 (KLF13) are two of the smallest members of the SP/KLF family, are paralogous, emerged early in metazoan evolution, and are highly conserved. Paradoxically, while most similar in primary sequence, KLF9 and KLF13 display many distinct roles in target cells. In this article, we summarize the work that has identified the roles of KLF9 (and to a lesser degree KLF13) in tumor suppression or promotion via unique effects on differentiation, pro- and anti-inflammatory pathways, oxidative stress, and tumor immune cell infiltration. We also highlight the great diversity of miRNAs, lncRNAs, and circular RNAs which provide mechanisms for the ubiquitous tumor-specific suppression of KLF9 mRNA and protein. Elucidation of KLF9 and KLF13 in cancer biology is likely to provide new inroads to the understanding of oncogenesis and its prevention and treatments.
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Affiliation(s)
- Frank A. Simmen
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Iad Alhallak
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
| | - Rosalia C. M. Simmen
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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Abstract
OBJECTIVE To investigate the correlation between the expression of Kruppel-like transcription factor 9 (KLF9) and the prognostic value of tumors as well as its relationship with tumor immune invasion. METHODS A series of bioinformatics methods were used to analyze the relationship between KLF9 and tumor prognosis, tumor mutation burden, microsatellite instability (MSI), and immune cell infiltration in multiple carcinomas. RESULTS In multiple tumor tissues, the expression of KLF9 was lower compared with paracancerous tissues. Therefore, KLF9 can serve as a protective factor to improve the prognosis of carcinoma patients with certain tumor types. KLF9 was closely related to the clinical staging of various carcinomas. The expression of KLF9 was not only associated with tumor mutation burden and MSI in some tumor types, but also positively correlated with immune and stromal cells in multiple tumors. Further studies have found that, the level of immune cell infiltration was significantly related to the expression of KLF9. CONCLUSION KLF9 can affect the prognosis of pan-carcinoma, which is related to immune invasion. Therefore, KLF9 can be used as a potential biomarker for the prognosis of pan-carcinoma.
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Affiliation(s)
- Weichao Cai
- Department of Plastic Surgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, China
| | - Yecheng Li
- Department of General Surgery, Second Affiliated Hospital of Soochow University, Suzhou, P. R. China
- *Correspondence: Weihong Cao, Department of Plastic Surgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, No. 150 XiMen Road, Taizhou, Zhejiang 317000, China (e-mail: ) and Yecheng Li, Department of General Surgery, Second Affiliated Hospital of Soochow University, No. 1055 Sanxiang Road, Suzhou, Jiangsu 215004, P. R. China (e-mail: )
| | - Weihong Cao
- Department of Plastic Surgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, China
- *Correspondence: Weihong Cao, Department of Plastic Surgery, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, No. 150 XiMen Road, Taizhou, Zhejiang 317000, China (e-mail: ) and Yecheng Li, Department of General Surgery, Second Affiliated Hospital of Soochow University, No. 1055 Sanxiang Road, Suzhou, Jiangsu 215004, P. R. China (e-mail: )
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Yang L, Shi YL, Ma Y, Ren WW, Pang GM, Liu J. Silencing KLF16 inhibits oral squamous cell carcinoma cell proliferation by arresting the cell cycle and inducing apoptosis. APMIS 2021; 130:43-52. [PMID: 34779529 DOI: 10.1111/apm.13194] [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: 01/20/2021] [Accepted: 11/11/2021] [Indexed: 11/29/2022]
Abstract
Krüppel-like factor 16 (KLF16), a member of the Krüppel-like factor (KLF) family, has been extensively investigated in multiple cancer types. However, the role of KLF16 in oral squamous cell carcinoma (OSCC) remains unknown. Thus, we conducted this study to investigate its related mechanism. KLF16 expression in OSCC cell lines was quantified by western blotting. Then, OECM1 and OC3 cells were divided into Blank, siCtrl, siKLF16#1 and siKLF16#2 groups. Subsequently, cell proliferation was detected using 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assays, cell migration and invasion were detected with wound healing and Transwell assays, and cell cycle distribution and cell apoptosis were detected via flow cytometry. KLF16, p21, CDK4, Cyclin D1 and p-Rb expression was detected by western blotting. Finally, xenograft models were established in nude mice to observe the in vivo effects of KLF16 on OSCC. KLF16 protein expression was upregulated in OSCC cells. Compared to the cells in the Blank group, the OECM1 and OC3 cells in the siKLF16#1 group and siKLF16#2 group exhibited a sharp decrease in proliferation but a remarkable increase in apoptosis. Moreover, the proportion of cells in the G0/G1 phase notably increased and that in the S phase decreased, with evident decreases in cell invasion and migration. Moreover, KLF16, cyclin-dependent kinase 4 (CDK4), Cyclin D1 and p-Rb protein expression was upregulated, but p21 expression was downregulated. The mice in the siKLF16#1 and siKLF16#2 xenograft model groups exhibited slower tumour growth and smaller tumours with evident downregulation of Ki67 expression compared to the mice in the Blank group. KLF16 expression was upregulated in OSCC cells, and interfering with KLF16 led to cell cycle arrest, inhibited OSCC cell growth and promoted cell apoptosis.
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Affiliation(s)
- Lei Yang
- Department of Orthodontics, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - You-Ling Shi
- Department of Orthodontics, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Yan Ma
- Department of Orthodontics, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Wei-Wei Ren
- Department of Pediatric Stomatology, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Guang-Ming Pang
- Department of Orthodontics, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Jiao Liu
- Department of Pediatric Stomatology, Dongfeng Stomatological Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
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Xing J, Jia Z, Xu Y, Chen M, Yang Z, Chen Y, Han Y. KLF9 (Kruppel Like Factor 9) induced PFKFB3 (6-Phosphofructo-2-Kinase/Fructose-2, 6-Biphosphatase 3) downregulation inhibits the proliferation, metastasis and aerobic glycolysis of cutaneous squamous cell carcinoma cells. Bioengineered 2021; 12:7563-7576. [PMID: 34612136 PMCID: PMC8806463 DOI: 10.1080/21655979.2021.1980644] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cutaneous squamous cell carcinoma (CSCC) is the second most common skin cancer in humans with increasing incidence. In this paper, we focused on the effects of krueppel-like factor 9 (KLF9) on the progression of CSCC cells by binding to PFKFB3. mRNA and protein expressions of KLF9 and PFKFB3 in human HaCaT and CSCC cells were, respectively, examined by RT-qPCR analysis and Western blot. The viability, proliferation, invasion and migration of A431 cells after transfection were analyzed with MTT, clone formation, transwell and wound healing assays. The levels of glucose, lactic acid and ATP in transfected A431 cells were detected by their commercial kits. Ki-67 expression in transfected A431 cells was determined using immunofluorescence analysis and in tumor tissues was analyzed by immunohistochemistry. The levels of migration, EMT and aerobic glycolysis-related proteins were tested with Western blot. The combination of KLF9 and PFKFB3 was confirmed by dual-luciferase reporter assay and ChIP. As a result, PFKFB3 expression was elevated in CSCC cells compared with HaCaT. Knockdown of PFKFB3 restrained the proliferation, metastasis, and aerobic glycolysis of CSCC cells. In addition, KLF9 could bind to PFKFB3. Downregulation of KLF9 crippled the inhibitory effect of knockdown of PFKFB3 on the proliferation, metastasis, and aerobic glycolysis of CSCC cells. In conclusion, PFKFB3 was transcriptionally regulated by KLF9, and PFKFB3 silencing inhibits the proliferation, metastasis, and aerobic glycolysis of cutaneous squamous cell carcinoma cells.
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Affiliation(s)
- Jiahua Xing
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Ziqi Jia
- Peking Union Medical College, Beijing, China
| | - Yichi Xu
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China
| | - Muzi Chen
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China.,School of Medicine, Nankai University, Tianjin, China
| | - Zheng Yang
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China
| | - Youbai Chen
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China
| | - Yan Han
- Department of Plastic and Reconstructive Surgery, The First Medical Center, Chinese Pla General Hospital, Beijing, China
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Lafontaine N, Campbell PJ, Castillo-Fernandez JE, Mullin S, Lim EM, Kendrew P, Lewer M, Brown SJ, Huang RC, Melton PE, Mori TA, Beilin LJ, Dudbridge F, Spector TD, Wright MJ, Martin NG, McRae AF, Panicker V, Zhu G, Walsh JP, Bell JT, Wilson SG. Epigenome-Wide Association Study of Thyroid Function Traits Identifies Novel Associations of fT3 With KLF9 and DOT1L. J Clin Endocrinol Metab 2021; 106:e2191-e2202. [PMID: 33484127 PMCID: PMC8063248 DOI: 10.1210/clinem/dgaa975] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Indexed: 12/12/2022]
Abstract
CONTEXT Circulating concentrations of free triiodothyronine (fT3), free thyroxine (fT4), and thyrotropin (TSH) are partly heritable traits. Recent studies have advanced knowledge of their genetic architecture. Epigenetic modifications, such as DNA methylation (DNAm), may be important in pituitary-thyroid axis regulation and action, but data are limited. OBJECTIVE To identify novel associations between fT3, fT4, and TSH and differentially methylated positions (DMPs) in the genome in subjects from 2 Australian cohorts. METHOD We performed an epigenome-wide association study (EWAS) of thyroid function parameters and DNAm using participants from: Brisbane Systems Genetics Study (median age 14.2 years, n = 563) and the Raine Study (median age 17.0 years, n = 863). Plasma fT3, fT4, and TSH were measured by immunoassay. DNAm levels in blood were assessed using Illumina HumanMethylation450 BeadChip arrays. Analyses employed generalized linear mixed models to test association between DNAm and thyroid function parameters. Data from the 2 cohorts were meta-analyzed. RESULTS We identified 2 DMPs with epigenome-wide significant (P < 2.4E-7) associations with TSH and 6 with fT3, including cg00049440 in KLF9 (P = 2.88E-10) and cg04173586 in DOT1L (P = 2.09E-16), both genes known to be induced by fT3. All DMPs had a positive association between DNAm and TSH and a negative association between DNAm and fT3. There were no DMPs significantly associated with fT4. We identified 23 differentially methylated regions associated with fT3, fT4, or TSH. CONCLUSIONS This study has demonstrated associations between blood-based DNAm and both fT3 and TSH. This may provide insight into mechanisms underlying thyroid hormone action and/or pituitary-thyroid axis function.
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Affiliation(s)
- Nicole Lafontaine
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Medical School, University of Western Australia, Crawley, WA, Australia
- Correspondence: Nicole Lafontaine, MBBS, BMedSci, RACP, Department of Endocrinology & Diabetes, Level 1, Building C, QEII Medical Centre, Sir Charles Gairdner Hospital, Hospital Ave, Nedlands, WA 6009, Australia.
| | - Purdey J Campbell
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | | | - Shelby Mullin
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Ee Mun Lim
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Pathwest Laboratory Medicine, Nedlands, WA, Australia
| | | | | | - Suzanne J Brown
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Rae-Chi Huang
- Telethon Kids Institute, University of Western Australia, Perth, Australia
| | - Phillip E Melton
- School of Biomedical Sciences, University of Western Australia, Perth, Australia
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, Australia
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Trevor A Mori
- Medical School, Royal Perth Hospital Unit, University of Western Australia, Perth, WA, Australia
| | - Lawrence J Beilin
- Medical School, Royal Perth Hospital Unit, University of Western Australia, Perth, WA, Australia
| | - Frank Dudbridge
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Tim D Spector
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
| | - Margaret J Wright
- Queensland Brain Institute, University of Queensland, Brisbane, Australia
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | | | - Allan F McRae
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Vijay Panicker
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Gu Zhu
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - John P Walsh
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Medical School, University of Western Australia, Crawley, WA, Australia
| | - Jordana T Bell
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
| | - Scott G Wilson
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
- School of Biomedical Sciences, University of Western Australia, Perth, Australia
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Huang C, Li J, Zhang X, Xiong T, Ye J, Yu J, Gui Y. The miR-140-5p/KLF9/KCNQ1 axis promotes the progression of renal cell carcinoma. FASEB J 2020; 34:10623-10639. [PMID: 32596959 DOI: 10.1096/fj.202000088rr] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/27/2020] [Accepted: 05/27/2020] [Indexed: 12/21/2022]
Abstract
Although renal cell carcinoma (RCC) is a common malignant urological cancer, its pathogenesis remains unclear. Previous studies have indicated that miR-140-5p acts as a tumor suppressor in various tumors, including bladder cancer, hepatocellular carcinoma, and gastric cancer, but its biological function in RCC remains unknown. In the present study, we found that miR-140-5p was upregulated in RCC tissues, whereas Krüppel-like factor 9 (KLF9) was downregulated and correlated inversely with miR-140-5p in RCC tissues. miR-140-5p promoted the proliferation, migration, and invasion of RCC cells in vitro, and knockdown of miR-140-5p significantly suppressed tumor growth and lung metastasis in nude mouse model of RCC. We also found that miR-140-5p significantly suppressed the expression of KLF9 by binding to the 3'-UTR of KLF9 mRNA and that KLF9, as a transcription factor, upregulates KCNQ1 (also called Kv 7.1 and Kv LQT1) expression by binding to the site (-841/-827) in the KCNQ1 promoter region in RCC cells. Moreover, forced expression of KCNQ1 decreased the growth and metastasis of RCC cells. These results suggest that the miR-140-5p/KLF9/KCNQ1 axis functions as a key signaling pathway in RCC progression and metastasis and represents a potential target of RCC therapies.
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Affiliation(s)
- Chenchen Huang
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
- Anhui Medical University, Hefei, China
| | - Jianfa Li
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
| | - Xiaoting Zhang
- Shenzhen Bao'an District Songgang People's Hospital, Shenzhen, China
| | - Tiefu Xiong
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
| | - Jing Ye
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
| | - Jing Yu
- Department of Laboratory Medicine, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yaoting Gui
- Guangdong and Shenzhen Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Clinical College of Anhui Medical University, Shenzhen, China
- Anhui Medical University, Hefei, China
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Yan X, Zhang H, Ke J, Zhang Y, Dai C, Zhu M, Jiang F, Zhu H, Zhang L, Zuo X, Li W, Yin X, Wan X. Progesterone receptor inhibits the proliferation and invasion of endometrial cancer cells by up regulating Krüppel-like factor 9. Transl Cancer Res 2020; 9:2220-2230. [PMID: 35117582 PMCID: PMC8798504 DOI: 10.21037/tcr.2020.03.53] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/10/2020] [Indexed: 12/19/2022]
Abstract
Background Krüppel-like factor 9 (KLF9) is one of the most important members of the KLF family, and is abnormally expressed in many tumors. However, the detailed function of KLF9 in endometrial cancer (EC) was barely investigated. Methods In this study, a total of 52 paired EC tissues were recruited to detect the KLF9 expression. Then a serial of phenotypic experiments and mechanism researches were performed. Results The results showed that KLF9 expression was decreased in EC tissues, and the reduced expression of KLF9 is associated with highly metastatic capacity of EC cells. KLF9 could inhibit the proliferation and invasion of EC cells by inhibiting the Wnt/β-catenin signaling pathway. Progesterone receptor (PR) could bind to KLF9 promoter and a positive correlation between KLF9 and PR expression was witnessed. Conclusions Taken together, the reduction of KLF9 induced by PR might participate in the development of EC and targeting KLF9 may provide a novel strategy for EC management.
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Affiliation(s)
- Xiaofang Yan
- Department of Obstetrics and Gynecology, Shanghai General Hospital of Nanjing Medical University, Shanghai 200000, China.,Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Huilin Zhang
- Department of Obstetrics and Gynecology, Shanghai General Hospital of Nanjing Medical University, Shanghai 200000, China.,Department of Obstetrics and Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210000, China
| | - Jieqi Ke
- Department of Obstetrics and Gynecology, Shanghai General Hospital of Nanjing Medical University, Shanghai 200000, China
| | - Yongli Zhang
- Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai 200080, China
| | - Chenyun Dai
- Department of Translation Medicine, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 210000, China
| | - Mei Zhu
- Department of Translation Medicine, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 210000, China
| | - Feizhou Jiang
- Department of Obstetrics and Gynecology, the First Affiliated Hospital of Soochow University, Suzhou 215000, China
| | - Hongdi Zhu
- Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Ling Zhang
- Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Xin Zuo
- Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Weiling Li
- Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Xiufeng Yin
- Department of Gynecology and Obstetrics, Yixing People's Hospital, Yixing 214200, China
| | - Xiaoping Wan
- Department of Obstetrics and Gynecology, Shanghai General Hospital of Nanjing Medical University, Shanghai 200000, China.,Department of Obstetrics and Gynecology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai 200080, China
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Chen S, Gu S, Xu M, Mei D, Xiao Y, Chen K, Yan Z. Krüppel-like factor 9 promotes neuroblastoma differentiation via targeting the sonic hedgehog signaling pathway. Pediatr Blood Cancer 2020; 67:e28108. [PMID: 31782614 DOI: 10.1002/pbc.28108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/02/2019] [Accepted: 11/10/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Neuroblastoma (NB) is a deadly solid tumor of children. Krüppel-like factor 9 (KLF9) has prodifferentiation and tumor suppression functions in several types of cancers. Here, we aimed to investigate the effects of KLF9 on NB differentiation and growth and to elucidate the underlying mechanism. PROCEDURE Sixty-five NB paraffin samples were assessed for expression levels of KLF9 and sonic hedgehog (SHH) signaling pathway proteins by immunohistochemistry. The associations between expression of KLF9 and the SHH pathway components and patients' clinicopathologic characteristics were estimated. The impacts of KLF9 on cell differentiation, proliferation, and invasion were investigated in two NB cell lines (SH-SY5Y and IMR32). Additionally, chromatin immunoprecipitation (ChIP) and luciferase reporter assays were used to elucidate the mechanism by which KLF9 regulates SHH signaling. RESULTS Differentiating NB specimens showed significantly higher KLF9 expression levels than undifferentiated/poorly differentiated ones. Moreover, increased KLF9 expression was associated with favorable prognoses in patients with NB. A negative correlation was found between KLF9 and SHH signaling expression levels in NB specimens. In vitro assays revealed that KLF9 promoted the differentiation of NB cells and inhibited their proliferation and invasion via suppression of the SHH pathway. Furthermore, KLF9 binding sites in the SHH promoter were identified by ChIP and luciferase reporter assays. CONCLUSIONS KLF9 exerts prodifferentiation and growth-inhibition effects on NB via suppression of the SHH pathway, suggesting a potential role of KLF9 in NB therapy.
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Affiliation(s)
- Sheng Chen
- Department of Pediatric Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Song Gu
- Department of Pediatric Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Min Xu
- Department of Pediatric Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Dongyu Mei
- Department of Pediatric Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yongtao Xiao
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Kai Chen
- Department of Pediatric Surgery, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Zhilong Yan
- Department of Pediatric Surgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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9
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Li Y, Sun Q, Jiang M, Li S, Zhang J, Xu Z, Guo D, Gu T, Wang B, Xiao L, Zhou T, Zhuo W. KLF9 suppresses gastric cancer cell invasion and metastasis through transcriptional inhibition of MMP28. FASEB J 2019; 33:7915-7928. [PMID: 30913394 DOI: 10.1096/fj.201802531r] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yang Li
- College of Animal ScienceZhejiang University Hangzhou China
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Qiang Sun
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Mingchun Jiang
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Shuang Li
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Jiayu Zhang
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Zhangqi Xu
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Dongyang Guo
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Tianning Gu
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Boya Wang
- Department of PharmacySir Run Run Shaw HospitalZhejiang University School of Medicine Hangzhou China
| | - Lei Xiao
- College of Animal ScienceZhejiang University Hangzhou China
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
| | - Tianhua Zhou
- Institute of GastroenterologyZhejiang University Hangzhou China
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China
| | - Wei Zhuo
- Institute of GastroenterologyZhejiang University Hangzhou China
- Department of Cell BiologyCancer Institute of the Second Affiliated HospitalZhejiang University School of Medicine Hangzhou China
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10
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Bagati A, Moparthy S, Fink EE, Bianchi-Smiraglia A, Yun DH, Kolesnikova M, Udartseva OO, Wolff DW, Roll MV, Lipchick BC, Han Z, Kozlova NI, Jowdy P, Berman AE, Box NF, Rodriguez C, Bshara W, Kandel ES, Soengas MS, Paragh G, Nikiforov MA. KLF9-dependent ROS regulate melanoma progression in stage-specific manner. Oncogene 2019; 38:3585-3597. [PMID: 30664687 DOI: 10.1038/s41388-019-0689-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/21/2018] [Accepted: 12/25/2018] [Indexed: 12/19/2022]
Abstract
Although antioxidants promote melanoma metastasis, the role of reactive oxygen species (ROS) in other stages of melanoma progression is controversial. Moreover, genes regulating ROS have not been functionally characterized throughout the entire tumor progression in mouse models of cancer. To address this question, we crossed mice-bearing knock-out of Klf9, an ubiquitous transcriptional regulator of oxidative stress, with two conditional melanocytic mouse models: BrafCA mice, where BrafV600E causes premalignant melanocytic hyperplasia, and BrafCA/Pten-/- mice, where BrafV600E and loss of Pten induce primary melanomas and metastases. Klf9 deficiency inhibited premalignant melanocytic hyperplasia in BrafCA mice but did not affect formation and growth of BrafCA/Pten-/- primary melanomas. It also, as expected, promoted BrafCA/Pten-/- metastasis. Treatment with antioxidant N-acetyl cysteine phenocopied loss of Klf9 including suppression of melanocytic hyperplasia. We were interested in a different role of Klf9 in regulation of cell proliferation in BrafCA and BrafCA/Pten-/- melanocytic cells. Mechanistically, we demonstrated that BRAFV600E signaling transcriptionally upregulated KLF9 and that KLF9-dependent ROS were required for full-scale activation of ERK1/2 and induction of cell proliferation by BRAFV600E. PTEN depletion in BRAFV600E-melanocytes did not further activate ERK1/2 and cell proliferation, but rendered these phenotypes insensitive to KLF9 and ROS. Our data identified an essential role of KLF9-dependent ROS in BRAFV600E signaling in premalignant melanocytes, offered an explanation to variable role of ROS in premalignant and transformed melanocytic cells and suggested a novel mechanism for suppression of premalignant growth by topical antioxidants.
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Affiliation(s)
- Archis Bagati
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Smith Building, SM-0728, 450 Brookline Ave, Boston, MA, 02215, USA
| | - Sudha Moparthy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Emily E Fink
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | | | - Dong Hyun Yun
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Masha Kolesnikova
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Olga O Udartseva
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - David W Wolff
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Matthew V Roll
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Brittany C Lipchick
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA.,Department of Hematology and Oncology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Zhannan Han
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA.,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | | | - Peter Jowdy
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Albert E Berman
- Orekhovich Institute of Biomedical Chemistry, Moscow, 119121, Russia
| | - Neil F Box
- Department of Dermatology, Anschutz Medical Campus, University of Colorado, Aurora, CO, USA
| | - Cesar Rodriguez
- Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA
| | - Wiam Bshara
- Department of Pathology Resource Network, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Eugene S Kandel
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Maria S Soengas
- Melanoma Laboratory, Molecular Oncology Programme, Spanish National Cancer Research Center (CNIO), 28029, Madrid, Spain
| | - Gyorgy Paragh
- Department of Dermatology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Mikhail A Nikiforov
- Department of Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY, USA. .,Department of Cancer Biology, Wake Forest University Comprehensive Cancer Center, Winston-Salem, USA.
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Retinoic Acid Receptor α Knockdown Suppresses the Tumorigenicity of Esophageal Carcinoma via Wnt/β-catenin Pathway. Dig Dis Sci 2018; 63:3348-3358. [PMID: 30155836 DOI: 10.1007/s10620-018-5254-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 08/16/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Aberrant expression of retinoic acid receptor α (RARα) was correlated with diverse carcinomas such as acute promyelocytic leukemia and colorectal carcinoma. Nevertheless, the function and mechanism of RARα in esophageal carcinoma (EC) remain unclear. AIM To investigate the expression of RARα in EC and its effect in the tumorigenesis of EC. METHODS AND RESULTS In immunohistochemistry study, RARα was overexpressed in human EC tissues, and its overexpression was closely related to the pathological differentiation, lymph node metastasis, and clinical stages in EC patients. Functionally, RARα knockdown suppressed the proliferation and metastasis of EC cells through downregulating the expression of PCNA, Ki67, MMP7, and MMP9, as well as enhanced drug susceptibility of EC cells to 5-fluorouracil and cisplatin. Mechanistically, RARα knockdown inhibited the activity of Wnt/β-catenin pathway through reducing the phosphorylation level of GSK3β at Ser-9 and inducing phosphorylation level at Tyr-216, which resulted in downregulation of its downstream targets such as MMP7, MMP9, and P-gP. CONCLUSIONS Our results demonstrated that RARα knockdown suppressed the tumorigenicity of EC via Wnt/β-catenin pathway. RARα might be a potential molecular target for EC clinical therapy.
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12
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Zhang D, Hao P, Jin L, Wang Y, Yan Z, Wu S. MicroRNA‑940 promotes cell proliferation and invasion of glioma by directly targeting Kruppel‑like factor 9. Mol Med Rep 2018; 19:734-742. [PMID: 30431124 DOI: 10.3892/mmr.2018.9630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 10/01/2018] [Indexed: 11/06/2022] Open
Abstract
MicroRNA‑940 (miR‑940) has been extensively studied in the pathogenesis of numerous types of human cancer; however, the expression pattern, roles and molecular mechanisms underlying the regulatory actions of miR‑940 in glioma remain unknown. The present study aimed to further investigate miR‑940 by studying its expression, roles and mechanisms of action in glioma. Reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) was used to detect miR‑940 expression in glioma tissues and cell lines. The regulatory effects of miR‑940 in glioma cell proliferation and invasion were determined using MTT and cell invasion assays. Bioinformatics analyses was performed to identify the potential target of miR‑940, which was further confirmed by luciferase reporter assay, RT‑qPCR and western blot analysis. In the present study, significantly increased miR‑940 expression levels were observed in glioma tissues and cell lines compared with normal brain tissues and normal human astrocytes, respectively. Decreased miR‑940 expression levels attenuated glioma cell proliferation and invasion in vitro. Kruppel‑like factor 9 (KLF9) was predicted as a potential target of miR‑940. Further assays demonstrated that miR‑940 negatively regulated KLF9 expression in glioma cells by directly targeting the 3'‑untranslated regions of KLF9. Additionally, KLF9 expression was downregulated in glioma tissues and was inversely correlated with miR‑940. Furthermore, KLF9 knockdown was able to rescue the effects of miR‑940 on glioma cell proliferation and invasion. The results of the present study suggest that miR‑940 may function as an oncogene in glioma by targeting KLF9 and may be a considered a therapeutic target for the treatment of gliomas.
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Affiliation(s)
- Dongzi Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
| | - Puheng Hao
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
| | - Lin Jin
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
| | - Yuangang Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
| | - Zhifeng Yan
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
| | - Shuqiang Wu
- Department of Oncology, The First Affiliated Hospital of Xi'an Medical University, Xi'an, Shaanxi 710077, P.R. China
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13
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Ji P, Fan X, Ma X, Wang X, Zhang J, Mao Z. Krüppel-like factor 9 suppressed tumorigenicity of the pancreatic ductal adenocarcinoma by negatively regulating frizzled-5. Biochem Biophys Res Commun 2018; 499:815-821. [PMID: 29621541 DOI: 10.1016/j.bbrc.2018.03.229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 03/31/2018] [Indexed: 12/28/2022]
Abstract
Krüppel-like factor 9 (KLF9) has been implicated in mediating a diverse range of biological processes. However, the expression pattern and biological functions of KLF9 in pancreatic ductal adenocarcinoma (PDAC) are still unknown. Here, we evaluated the role of KLF9 in pancreatic ductal adenocarcinoma (PDAC). Overexpression of KLF9 significantly inhibited proliferation and clone formation in PDAC cells, while silencing KLF9 expression dramatically promoted this effect in vitro. Knocking down the expression of KLF9 also promoted the tumorigenesis in the PDAC mouse xneograft model. In in vitro mechanism study, KLF9 negatively regulated the activity of wnt/beta-catenin pathway in Top/Fop reporter assay. Frizzled-5, a key component involving in this pathway, was sharp inhibited by KLF9 both in mRNA and protein level. Furthermore, a KLF9-binding site (BTE) was identified in the promoter region of Frizzled-5. Mutation or deletion of this BTE strongly disrupted the KLF9's regulatory effect on Frizzled-5. More importantly, the expression level of KLF9 was significantly lower in clinical PDAC tissue compared to matched normal tissues and inversely associated with survival of the patients. Together, our findings indicated that KLF9 suppressed tumorigenicity of the pancreatic ductal adenocarcinoma by negatively regulating frizzled-5.
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Affiliation(s)
- Peiyu Ji
- College of Medical School, Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Xin Fan
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Xiaoyan Ma
- Department of Gynecology and Obstetrics, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Xuqing Wang
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, PR China
| | - Jianxin Zhang
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, PR China.
| | - Zhengfa Mao
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, PR China.
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Juszczak GR, Stankiewicz AM. Glucocorticoids, genes and brain function. Prog Neuropsychopharmacol Biol Psychiatry 2018; 82:136-168. [PMID: 29180230 DOI: 10.1016/j.pnpbp.2017.11.020] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/18/2017] [Accepted: 11/23/2017] [Indexed: 01/02/2023]
Abstract
The identification of key genes in transcriptomic data constitutes a huge challenge. Our review of microarray reports revealed 88 genes whose transcription is consistently regulated by glucocorticoids (GCs), such as cortisol, corticosterone and dexamethasone, in the brain. Replicable transcriptomic data were combined with biochemical and physiological data to create an integrated view of the effects induced by GCs. The most frequently reported genes were Errfi1 and Ddit4. Their up-regulation was associated with the altered transcription of genes regulating growth factor and mTORC1 signaling (Gab1, Tsc22d3, Dusp1, Ndrg2, Ppp5c and Sesn1) and progression of the cell cycle (Ccnd1, Cdkn1a and Cables1). The GC-induced reprogramming of cell function involves changes in the mRNA level of genes responsible for the regulation of transcription (Klf9, Bcl6, Klf15, Tle3, Cxxc5, Litaf, Tle4, Jun, Sox4, Sox2, Sox9, Irf1, Sall2, Nfkbia and Id1) and the selective degradation of mRNA (Tob2). Other genes are involved in the regulation of metabolism (Gpd1, Aldoc and Pdk4), actin cytoskeleton (Myh2, Nedd9, Mical2, Rhou, Arl4d, Osbpl3, Arhgef3, Sdc4, Rdx, Wipf3, Chst1 and Hepacam), autophagy (Eva1a and Plekhf1), vesicular transport (Rhob, Ehd3, Vps37b and Scamp2), gap junctions (Gjb6), immune response (Tiparp, Mertk, Lyve1 and Il6r), signaling mediated by thyroid hormones (Thra and Sult1a1), calcium (Calm2), adrenaline/noradrenaline (Adcy9 and Adra1d), neuropeptide Y (Npy1r) and histamine (Hdc). GCs also affected genes involved in the synthesis of polyamines (Azin1) and taurine (Cdo1). The actions of GCs are restrained by feedback mechanisms depending on the transcription of Sgk1, Fkbp5 and Nr3c1. A side effect induced by GCs is increased production of reactive oxygen species. Available data show that the brain's response to GCs is part of an emergency mode characterized by inactivation of non-core activities, restrained inflammation, restriction of investments (growth), improved efficiency of energy production and the removal of unnecessary or malfunctioning cellular components to conserve energy and maintain nutrient supply during the stress response.
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Affiliation(s)
- Grzegorz R Juszczak
- Department of Animal Behavior, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552 Magdalenka, Poland.
| | - Adrian M Stankiewicz
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Jastrzebiec, ul. Postepu 36A, 05-552 Magdalenka, Poland
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15
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Bai XY, Li S, Wang M, Li X, Yang Y, Xu Z, Li B, Li Y, Xia K, Chen H, Wu H. Krüppel-like factor 9 down-regulates matrix metalloproteinase 9 transcription and suppresses human breast cancer invasion. Cancer Lett 2018; 412:224-235. [DOI: 10.1016/j.canlet.2017.10.027] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 01/09/2023]
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16
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Xu F, Xu CZ, Gu J, Liu X, Liu R, Huang E, Yuan Y, Zhao G, Jiang J, Xu C, Chu Y, Lu C, Ge D. Eukaryotic translation initiation factor 3B accelerates the progression of esophageal squamous cell carcinoma by activating β-catenin signaling pathway. Oncotarget 2017; 7:43401-43411. [PMID: 27270324 PMCID: PMC5190032 DOI: 10.18632/oncotarget.9726] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 04/28/2016] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Esophageal squamous cell carcinoma (ESCC) is one of the most aggressive malignant tumors. Eukaryotic translation initiation factors 3B (EIF3B) is considered to influence tumor proliferation, invasion, apoptosis and cell cycle, which act together to promote the progression of tumors. However, the role of EIF3B in ESCC is unknown. This study aims to explore the clinical and biological role of EIF3B in ESCC. RESULTS EIF3B expressions were up-regulated in both ESCC tissues and cell lines. Overexpression of EIF3B was associated with tumor depth, lymph node metastasis and advanced TNM stage. Importantly, patients with high EIF3B expression suffered shorter overall and disease-free survival. Knockdown of EIF3B could inhibit cell proliferation and invasion, promote cell apoptosis, and interfere the cell cycle in vitro. EIF3B-knockdown cells could form smaller subcutaneous tumors in vivo. Finally, we demonstrated EIF3B could activate β-catenin signaling pathway. METHODS Immunohistochemical staining and Western blot were performed to detect the EIF3B expression in ESCC patient tissues and cell lines. The association between EIF3B expression and patients' prognosis was analyzed by Kaplan-Meier and Cox regression. Then, CCK-8, colony-formation, Transwell and wound-healing assay were performed to compare the bio-functional change after knockdown of EIF3B. Flow cytometry was applied to analyze the change of cell apoptosis and cycle induced by EIF3B knockdown. Tumor xenograft assay was done to verify the in-vitro results. CONCLUSIONS EIF3B might serve as a novel marker for predicting prognosis of ESCC patients and as a potential therapeutic target, individually or together with other subunits of EIF3 complex.
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Affiliation(s)
- Fengkai Xu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Cheng-Zhi Xu
- Department of Otolaryngology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China
| | - Jie Gu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Xiaoming Liu
- Department of Immunology and Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, P. R. China
| | - Ronghua Liu
- Department of Immunology and Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, P. R. China
| | - Enyu Huang
- Department of Immunology and Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, P. R. China
| | - Yunfeng Yuan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Guangyin Zhao
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Jiahao Jiang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Chen Xu
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Yiwei Chu
- Department of Immunology and Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, P. R. China
| | - Chunlai Lu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
| | - Di Ge
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, P. R. China
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Kim CK, He P, Bialkowska AB, Yang VW. SP and KLF Transcription Factors in Digestive Physiology and Diseases. Gastroenterology 2017; 152:1845-1875. [PMID: 28366734 PMCID: PMC5815166 DOI: 10.1053/j.gastro.2017.03.035] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/21/2017] [Accepted: 03/24/2017] [Indexed: 12/14/2022]
Abstract
Specificity proteins (SPs) and Krüppel-like factors (KLFs) belong to the family of transcription factors that contain conserved zinc finger domains involved in binding to target DNA sequences. Many of these proteins are expressed in different tissues and have distinct tissue-specific activities and functions. Studies have shown that SPs and KLFs regulate not only physiological processes such as growth, development, differentiation, proliferation, and embryogenesis, but pathogenesis of many diseases, including cancer and inflammatory disorders. Consistently, these proteins have been shown to regulate normal functions and pathobiology in the digestive system. We review recent findings on the tissue- and organ-specific functions of SPs and KLFs in the digestive system including the oral cavity, esophagus, stomach, small and large intestines, pancreas, and liver. We provide a list of agents under development to target these proteins.
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Affiliation(s)
- Chang-Kyung Kim
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Ping He
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY
| | - Agnieszka B. Bialkowska
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
| | - Vincent W. Yang
- Department of Medicine, Stony Brook University School of Medicine, Stony Brook, NY,Department of Physiology and Biophysics, Stony Brook University School of Medicine, Stony Brook, NY,Corresponding Authors: Vincent W. Yang & Agnieszka B. Bialkowska, Department of Medicine, Stony Brook University School of Medicine, HSC T-16, Rm. 020; Stony Brook, NY, USA. Tel: (631) 444-2066; Fax: (631) 444-3144; ;
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RAP1B, a DVL2 binding protein, activates Wnt/beta-catenin signaling in esophageal squamous cell carcinoma. Gene 2017; 611:15-20. [PMID: 28119087 DOI: 10.1016/j.gene.2017.01.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 01/15/2017] [Accepted: 01/20/2017] [Indexed: 11/22/2022]
Abstract
RAP1B is a small GTPase, which regulates multiple cellular processes. Up-regulation of RAP1B has been observed in several cancer types. Although previous study has shown that miR-518 inhibited the proliferation and invasion of esophageal squamous cell carcinoma (ESCC) cells possibly by targeting RAP1B, the expression pattern and the functions of RAP1B in ESCC are not fully understood. Here, we have fund that the expression of RAP1B was up-regulated in ESCC clinical samples. Gain-of-function and loss-of-function assays demonstrated that RAP1B promoted the growth, migration and metastasis of the ESCC cells. Moreover, the mechanism study showed that RAP1B interacted with DVL2, an important upstream regulator for beta-catenin/TCF signaling, and activated beta-catenin/TCF signaling. Taken together, our study demonstrated the oncogenic roles of RAP1B in ESCC, and suggested that RAP1B might be a therapeutic target.
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19
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KLF2 is downregulated in pancreatic ductal adenocarcinoma and inhibits the growth and migration of cancer cells. Tumour Biol 2015; 37:3425-31. [DOI: 10.1007/s13277-015-4053-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 09/02/2015] [Indexed: 11/27/2022] Open
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