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Liu Y, Zeng M, Li Z, Lin C, Bao J, Ding W, Wang S, Fan Q, Sun Q, Luo H, Huang J, Chen S, Tang H. Linc01588 deletion inhibits the malignant biological characteristics of hydroquinone-induced leukemic cells via miR-9-5p/SIRT1. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116295. [PMID: 38581908 DOI: 10.1016/j.ecoenv.2024.116295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 03/16/2024] [Accepted: 04/01/2024] [Indexed: 04/08/2024]
Abstract
Leukemia caused by environmental chemical pollutants has attracted great attention, the malignant leukemic transformation model of TK6 cells induced by hydroquinone (HQ) has been previously found in our team. However, the type of leukemia corresponding to this malignant transformed cell line model needs further study and interpretation. Furthermore, the molecular mechanism of malignant proliferation of leukemic cells induced by HQ remains unclear. This study is the first to reveal the expression of aberrant genes in leukemic cells of HQ-induced malignant transformation, which may correspond to chronic lymphocytic leukemia (CLL). The expression of Linc01588, a long non-coding RNA (lncRNA), was significantly up-regulated in CLL patients and leukemic cell line model which previously described. After gain-of-function assays and loss-of-function assays, feeble cell viability, severe apoptotic phenotype and the increased secretion of TNF-α were easily observed in malignant leukemic TK6 cells with Linc01588 deletion after HQ intervention. The tumors derived from malignant TK6 cells with Linc01588 deletion inoculated subcutaneously in nude mice were smaller than controls. In CLL and its cell line model, the expression of Linc01588 and miR-9-5p, miR-9-5p and SIRT1 were negative correlation respectively in CLL and cell line model, while the expression of Linc01588 and SIRT1 were positive correlation. The dual-luciferase reporter assay showed that Linc01588 & miR-9-5p, miR-9-5p & SIRT1 could bind directly, respectively. Furthermore, knockdown of miR-9-5p successfully rescued the severe apoptotic phenotype and the increased secretion of TNF-α caused by the Linc01588 deletion, the deletion of Linc01588 in human CLL cell line MEC-2 could also inhibit malignant biological characteristics, and the phenotype caused by the deletion of Linc01588 could also be rescued after overexpression of SIRT1. Moreover, the regulation of SIRT1 expression in HQ19 cells by Linc01588 and miR-9-5 P may be related to the Akt/NF-κB pathway. In brief, Linc01588 deletion inhibits the malignant biological characteristics of HQ-induced leukemic cells via miR-9-5p/SIRT1, and it is a novel and hopeful clue for the clinical targeted therapy of CLL.
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Affiliation(s)
- Yanquan Liu
- Department of Hematology, The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan 523808, China; School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Minjuan Zeng
- School of Basic Medicine, Guangdong Medical University, Dongguan Key Laboratory for Development and Application of Experimental Animal Resources in Biomedical Industry, Dongguan 523808, China
| | - Zhengzhen Li
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Caixiong Lin
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Jie Bao
- Department of Clinical Laboratory, The Affiliated Hospital of Guangdong Medical University, Zhanjiang 524002, China
| | - Weihua Ding
- Central People's Hospital of Zhanjiang, Zhanjiang 524033, China
| | - Shimei Wang
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Qin Fan
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Qian Sun
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Hao Luo
- School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China
| | - Jinqi Huang
- Department of Hematology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
| | | | - Huanwen Tang
- Department of Hematology, The First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan 523808, China; School of Public Health, Guangdong Medical University, Dongguan 523808, China; Dongguan Key Laboratory of Environmental Medicine, Dongguan 523808, China.
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Xiang J, Qi XL, Cao K, Ran LY, Zeng XX, Xiao X, Liao W, He WW, Hong W, He Y, Guan ZZ. Exposure to fluoride exacerbates the cognitive deficit of diabetic patients living in areas with endemic fluorosis, as well as of rats with type 2 diabetes induced by streptozotocin via a mechanism that may involve excessive activation of the poly(ADP ribose) polymerase-1/P53 pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169512. [PMID: 38145685 DOI: 10.1016/j.scitotenv.2023.169512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/17/2023] [Accepted: 12/17/2023] [Indexed: 12/27/2023]
Abstract
Epidemiology has shown that fluoride exposure is associated with the occurrence of diabetes. However, whether fluoride affects diabetic encephalopathy is unclear. Elderly diabetic patients in areas with endemic (n = 169) or no fluorosis (108) and controls (85) underwent Montreal Cognitive Assessment. Sprague-Dawley rats receiving streptozotocin and/or different fluoride doses were examined for spatial learning and memory, brain morphology, blood-brain barrier, fasting blood glucose and insulin. Cultured SH-SY5Y cells were treated with 50 mM glucose and/or low- or high-dose fluoride, and P53-knockdown or poly-ADP-ribose polymerase-1 (PARP-1) inhibition. The levels of PARP-1, P53, poly-ADP-ribose (PAR), apoptosis-inducing factor (AIF), and phosphorylated-histone H2A.X (ser139) were measured by Western blotting. Reactive oxygen species (ROS), 8-hydroxydeguanosine (8-OHdG), PARP-1 activity, acetyl-P53, nicotinamide adenine dinucleotide (NAD+), activities of mitochondrial hexokinase1 (HK1) and citrate synthase (CS), mitochondrial membrane potential and apoptosis were assessed biochemically. Cognition of diabetic patients in endemic fluorosis areas was poorer than in other regions. In diabetic rats, fasting blood glucose, insulin resistance and blood-brain barrier permeability were elevated, while spatial learning and memory and Nissl body numbers in neurons declined. In these animals, expression and activity of P53 and PARP-1 and levels of NAD+, PAR, ROS, 8-OHdG, p-histone H2A.X (ser139), AIF and apoptosis content increased; whereas mitochondrial HK1 and CS activities and membrane potential decreased. SH-SY5Y cells exposed to glucose exhibited changes identical to diabetic rats. The changes in diabetic rats and cells treated with glucose were aggravated by fluoride. P53-knockout or PARP-1 inhibition mitigated the effects of glucose with/without low-dose fluoride. Elevation of diabetic encephalopathy was induced by exposure to fluoride and the underlying mechanism may involve overactivation of the PARP-1/P53 pathway.
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Affiliation(s)
- Jie Xiang
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Xiao-Lan Qi
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Kun Cao
- Department of Hepatobiliary Surgery at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Long-Yan Ran
- Department of Medical Science and Technology at the Guiyang Healthcare Vocational University, Guiyang 550004, PR China
| | - Xiao-Xiao Zeng
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Xiao Xiao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Wei Liao
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Wen-Wen He
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Yan He
- Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China
| | - Zhi-Zhong Guan
- Department of Pathology at the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, PR China; Key Laboratory of Endemic and Ethnic Diseases (Guizhou Medical University) of the Ministry of Education and Provincial Key Laboratory of Medical Molecular Biology, Guiyang 550004, PR China.
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Luo H, Chen L, Cui Z, Du J, Yang H, Qiu W, Zhai L, Liang H, Tang H. Poly(ADP-ribose)polymerase-1 affects hydroquinone-induced aberrant cell cycle and apoptosis through activation of p16/pRb signaling pathway in TK6 cells. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113259. [PMID: 35121258 DOI: 10.1016/j.ecoenv.2022.113259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/14/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Hydroquinone (HQ), a key metabolite of benzene, affects cell cycle and apoptosis. Poly (ADP-ribose) polymerase-1 (PARP-1) plays an important role in DNA damage repair. To explore whether PARP-1 is involved in HQ-induced cell cycle and apoptosis, we assessed the effect of PARP-1 suppression and overexpression on induction of cell cycle and apoptosis analyzed by flow cytometry analysis. We observed that HQ induced aberrant cell cycle progression and apoptosis. We further confirmed that PARP-1 suppression accelerated the cell cycle progression and inhibited cell apoptosis via inhibiting p16/pRb signal pathway after acute HQ exposure, while overexpression of PARP-1 displayed the opposite results. Therefore, we concluded that HQ-induced cell cycle and apoptosis were regulated by PARP-1 through activation of p16/pRb signaling pathway.
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Affiliation(s)
- Hao Luo
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Lin Chen
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Zheming Cui
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Jinlin Du
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Hui Yang
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Weifeng Qiu
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Lu Zhai
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Hairong Liang
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China
| | - Huanwen Tang
- Institute of Environmental Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, China.
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