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Feng Z, Jia C, Lin X, Hao H, Li S, Li F, Cui Q, Chen Y, Wu F, Xiao X. The inhibition of enterocyte proliferation by lithocholic acid exacerbates necrotizing enterocolitis through downregulating the Wnt/β-catenin signalling pathway. Cell Prolif 2022; 55:e13228. [PMID: 35441471 PMCID: PMC9136529 DOI: 10.1111/cpr.13228] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/02/2022] [Accepted: 03/14/2022] [Indexed: 11/26/2022] Open
Abstract
Objectives Necrotizing enterocolitis (NEC) is a catastrophic gastrointestinal emergency in preterm infants, whose exact aetiology remains unknown. The role of lithocholic acid (LCA), a key component of secondary bile acids (BAs), in NEC is unclear. Methods Clinical data were collected to analyse the changes of BAs in NEC patients. In vitro studies, the cell proliferation and cell death were assessed. In vivo experiments, the newborn rats were administered with low or high dose of LCA and further induced NEC. Results Clinically, compared with control group, total BAs in the NEC patients were significantly higher when NEC occurred. In vitro, LCA treatment significantly inhibited the cell proliferation through arresting cell cycle at G1/S phase without inducing apoptosis or necroptosis. Mechanistically, the Wnt/β‐catenin pathway was involved. In vivo, LCA inhibited intestinal cell proliferation leading to disruption of intestinal barrier, and thereby increased the severity of NEC. Specifically, LCA supplementation caused higher levels of FITC‐labelled dextran in serum, reduced PCNA expression and inhibited the activity of Wnt/β‐catenin pathway in enterocytes. The LC–MS/MS test found that LCA was significantly higher in intestinal tissue of NEC group, and more obviously in the NEC‐L and NEC‐H group compared with the DM group. Conclusion LCA exacerbates NEC by inhibiting intestinal cell proliferation through downregulating the Wnt/β‐catenin pathway.
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Affiliation(s)
- Zhoushan Feng
- Department of Pediatrics, Sun Yat-sen University Sixth Affiliated Hospital, Guangzhou, China.,Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chunhong Jia
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, China
| | - Xiaojun Lin
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hu Hao
- Department of Pediatrics, Sun Yat-sen University Sixth Affiliated Hospital, Guangzhou, China
| | - Sitao Li
- Department of Pediatrics, Sun Yat-sen University Sixth Affiliated Hospital, Guangzhou, China
| | - Fei Li
- Department of Pediatrics, Sun Yat-sen University Sixth Affiliated Hospital, Guangzhou, China
| | - Qiliang Cui
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yaoyong Chen
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Fan Wu
- Department of Pediatrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, China
| | - Xin Xiao
- Department of Pediatrics, Sun Yat-sen University Sixth Affiliated Hospital, Guangzhou, China
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Sun X, Wang H, Huang W, Yu H, Shen T, Song M, Han Y, Li Y, Zhu Y. Inhibition of bone formation in rats by aluminum exposure via Wnt/β-catenin pathway. CHEMOSPHERE 2017; 176:1-7. [PMID: 28249195 DOI: 10.1016/j.chemosphere.2017.02.086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 01/20/2017] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
The previous research found that aluminum trichloride (AlCl3) inhibited rat osteoblastic differentiation through inactivation of Wnt/β-catenin signaling pathway in vitro. On that basis, the experiment in vivo was conducted in this study. Rats were orally exposed to 0 (control group) and 0.4 g/L AlCl3 (AlCl3-treated group) for 30, 60, 90 or 120 days, respectively. We found that mRNA expressions of type I collagen and insulin-like growth factor-1, mRNA and protein expressions of Runx2 and survivin, ratio of p-GSK3β/GSK3β and protein expression of β-catenin were all decreased, whereas the mRNA and protein expressions Dkk1 and sFRP1 and the mRNA expressions and activity of Caspase-3 were increased in the AlCl3-treated group compared with the control group with time prolonged. These results suggest that AlCl3 inhibits bone formation and induces bone impairment by inhibiting the Wnt/β-catenin signaling pathway in young growing rats.
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Affiliation(s)
- Xudong Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Haoran Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Wanyue Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Hongyan Yu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Tongtong Shen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Miao Song
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yanfei Han
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yanfei Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Yanzhu Zhu
- Institute of Special Animal and Plant Sciences of Chinese Academy of Agricultural Sciences, Changchun 130112, China.
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Shukla S, Kanwal R, Shankar E, Datt M, Chance MR, Fu P, MacLennan GT, Gupta S. Apigenin blocks IKKα activation and suppresses prostate cancer progression. Oncotarget 2016; 6:31216-32. [PMID: 26435478 PMCID: PMC4741599 DOI: 10.18632/oncotarget.5157] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/24/2015] [Indexed: 12/27/2022] Open
Abstract
IKKα has been implicated as a key regulator of oncogenesis and driver of the metastatic process; therefore is regarded as a promising therapeutic target in anticancer drug development. In spite of the progress made in the development of IKK inhibitors, no potent IKKα inhibitor(s) have been identified. Our multistep approach of molecular modeling and direct binding has led to the identification of plant flavone apigenin as a specific IKKα inhibitor. Here we report apigenin, in micro molar range, inhibits IKKα kinase activity, demonstrates anti-proliferative and anti-invasive activities in functional cell based assays and exhibits anticancer efficacy in experimental tumor model. We found that apigenin directly binds with IKKα, attenuates IKKα kinase activity and suppresses NF-ĸB/p65 activation in human prostate cancer PC-3 and 22Rv1 cells much more effectively than IKK inhibitor, PS1145. We also showed that apigenin caused cell cycle arrest similar to knockdown of IKKα in prostate cancer cells. Studies in xenograft mouse model indicate that apigenin feeding suppresses tumor growth, lowers proliferation and enhances apoptosis. These effects correlated with inhibition of p-IKKα, NF-ĸB/p65, proliferating cell nuclear antigen and increase in cleaved caspase 3 expression in a dose-dependent manner. Overall, our results suggest that inhibition of cell proliferation, invasiveness and decrease in tumor growth by apigenin are mediated by its ability to suppress IKKα and downstream targets affecting NF-ĸB signaling pathways.
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Affiliation(s)
- Sanjeev Shukla
- Department of Urology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,The Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA
| | - Rajnee Kanwal
- Department of Urology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,The Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA
| | - Eswar Shankar
- Department of Urology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,The Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA
| | - Manish Datt
- Center for Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Mark R Chance
- Center for Proteomics and Bioinformatics, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Pingfu Fu
- Department of Epidemiology & Biostatistics, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA
| | - Gregory T MacLennan
- Department of Pathology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA
| | - Sanjay Gupta
- Department of Urology, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,The Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,Department of Nutrition, Case Western Reserve University & University Hospitals Case Medical Center, Cleveland, Ohio 44106, USA.,Divison of General Medical Sciences, Case Comprehensive Cancer Center, Cleveland, Ohio 44106, USA.,Department of Urology, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, Ohio 44106, USA
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Shin TH, Brynczka C, Dayyani F, Rivera MN, Sweetser DA. TLE4 regulation of wnt-mediated inflammation underlies its role as a tumor suppressor in myeloid leukemia. Leuk Res 2016; 48:46-56. [PMID: 27486062 DOI: 10.1016/j.leukres.2016.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/07/2016] [Accepted: 07/19/2016] [Indexed: 12/27/2022]
Abstract
The presence of AML1-ETO (RUNX1-CBF2T1), a fusion oncoprotein resulting from a t(8;21) chromosomal translocation, has been implicated as a necessary but insufficient event in the development of a subset of acute myeloid leukemias (AML). While AML1-ETO prolongs survival and inhibits differentiation of hematopoietic stem cells (HSC), other contributory events are needed for cell proliferation and leukemogenesis. We have postulated that specific tumor suppressor genes keep the leukemic potential of AML1-ETO in check. In studying del(9q), one of the most common concomitant chromosomal abnormalities with t(8;21), we identified the loss of an apparent tumor suppressor, TLE4, that appears to cooperate with AML1-ETO to confer a leukemic phenotype. This study sought to identify the molecular basis of this cooperation. We show that the loss of TLE4 confers proliferative advantage to leukemic cells, simultaneous with an upregulation of a pro- inflammatory signature mediated through aberrant increases in Wnt signaling activity. We further demonstrate that inhibition of cyclooxygenase (COX) activity partly reverses the pro-leukemic phenotype due to TLE4 knockdown, pointing towards a novel therapeutic approach for myeloid leukemia.
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Affiliation(s)
- Thomas H Shin
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States; Department of Molecular and Translational Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Christopher Brynczka
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States
| | - Farshid Dayyani
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States
| | - Miguel N Rivera
- Department of Pathology, Molecular Pathology Unit, Massachusetts General Hospital, Charlestown, MA 02129, United States
| | - David A Sweetser
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States.
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Sun X, Cao Z, Zhang Q, Liu S, Xu F, Che J, Zhu Y, Li Y, Pan C, Liang W. Aluminum trichloride impairs bone and downregulates Wnt/β-catenin signaling pathway in young growing rats. Food Chem Toxicol 2015; 86:154-62. [DOI: 10.1016/j.fct.2015.10.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 09/16/2015] [Accepted: 10/10/2015] [Indexed: 11/16/2022]
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