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Zhang N, Qiu M, Yao S, Zhou H, Zhang H, Jia Y, Li X, Chen X, Li X, Zhou Y, Jiang Y. Circ0087385 promotes DNA damage in benzo(a)pyrene-induced lung cancer development by upregulating CYP1A1. Toxicol Sci 2024; 198:221-232. [PMID: 38310363 DOI: 10.1093/toxsci/kfae017] [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] [Indexed: 02/05/2024] Open
Abstract
Increasing environmental genotoxic chemicals have been shown to induce epigenetic alterations. However, the interaction between genetics and epigenetics in chemical carcinogenesis is still not fully understood. Here, we constructed an in vitro human lung carcinogenesis model (16HBE-T) by treating human bronchial epithelial cells with a typical significant carcinogen benzo(a)pyrene (BaP). We identified a novel circular RNA, circ0087385, which was overexpressed in 16HBE-T and human lung cancer cell lines, as well as in lung cancer tissues and serum exosomes from lung cancer patients. The upregulated circ0087385 after exposure to BaP promoted DNA damage in the early stage of chemical carcinogenesis and affected the cell cycle, proliferation, and apoptosis of the malignantly transformed cells. Overexpression of circ0087385 enhanced the expression of cytochrome P450 1A1 (CYP1A1), which is crucial for metabolically activating BaP. Interfering with circ0087385 or CYP1A1 reduced the levels of ultimate carcinogen benzo(a)pyrene diol epoxide (BPDE) and BPDE-DNA adducts. Interfering with CYP1A1 partially reversed the DNA damage induced by high expression of circ0087385, as well as decreased the level of BPDE and BPDE-DNA adducts. These findings provide novel insights into the interaction between epigenetics and genetics in chemical carcinogenesis which are crucial for understanding the epigenetic and genetic toxicity of chemicals.
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Affiliation(s)
- Nan Zhang
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Miaoyun Qiu
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuwei Yao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Hanyu Zhou
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Han Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xin Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xintong Chen
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xun Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yun Zhou
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yiguo Jiang
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 511436, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
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2
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Chen W, Chen Z, Jia Y, Guo Y, Zheng L, Yao S, Shao Y, Li M, Mao R, Jiang Y. Circ_0008657 regulates lung DNA damage induced by hexavalent chromium through the miR-203a-3p/ATM axis. ENVIRONMENT INTERNATIONAL 2024; 185:108515. [PMID: 38394914 DOI: 10.1016/j.envint.2024.108515] [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: 09/28/2023] [Revised: 12/17/2023] [Accepted: 02/17/2024] [Indexed: 02/25/2024]
Abstract
Hexavalent chromium [Cr (VI)] is an important environmental pollutant and may cause lung injury when inhaled into the human body. Cr (VI) is genotoxic and can cause DNA damage, although the underlying epigenetic mechanisms remain unclear. To simulate the real-life workplace exposure to Cr (VI), we used a novel exposure dose calculation method. We evaluated the effect of Cr (VI) on DNA damage in human bronchial epithelial cells (16HBE and BEAS-2B) by calculating the equivalent real-time exposure dose of Cr (VI) (0 to 10 μM) in an environmental population. Comet experiments and olive tail moment measurements revealed increased DNA damage in cells exposed to Cr (VI). Cr (VI) treatment increased nuclear γ-H2AX foci and γ-H2AX protein expression, and caused DNA damage in the lung tissues of mice. An effective Cr (VI) dose (6 μM) was determined and used for cell treatment. Cr (VI) exposure upregulated circ_0008657, and knockdown of circ_0008657 decreased Cr (VI)-induced DNA damage, whereas circ_0008657 overexpression had the opposite effect. Mechanistically, we found that circ_0008657 binds to microRNA (miR)-203a-3p and subsequently regulates ATM serine/threonine kinase (ATM), a key protein involved in homologous recombination repair downstream of miR-203a-3p, thereby regulating DNA damage induced by Cr (VI). The present findings suggest that circ_0008657 competitively binds to miR-203a-3p to activate the ATM pathway and regulate the DNA damage response after environmental chemical exposure in vivo and in vitro.
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Affiliation(s)
- Wei Chen
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Zehao Chen
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yaozheng Guo
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Liting Zheng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuwei Yao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Meizhen Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Rulin Mao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yiguo Jiang
- The Key Laboratory of Advanced Interdisciplinary Studies, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China.
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3
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Zeng H, Chen W, Li M, Shao Y, Li X, Zhang R, Jiang Y. Temporal analysis of lung injury induced by real-ambient PM 2 .5 exposure in mice. ENVIRONMENTAL TOXICOLOGY 2024; 39:377-387. [PMID: 37782690 DOI: 10.1002/tox.23985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 08/19/2023] [Accepted: 09/18/2023] [Indexed: 10/04/2023]
Abstract
Fine particulate matter (PM2.5 ) has been shown to induce lung injury. However, the pathophysiological mechanisms of PM2.5 -induced pulmonary injury after different exposure times are poorly understood. In this study, we exposed male ICR mice to a whole-body PM2.5 inhalation system at daily mean concentration range from 92.00 to 862.00 μg/m3 for 30, 60, and 90 days. We found that following prolonged exposure to PM2.5 , pulmonary injury was increasingly evident with significant histopathological alterations. Notably, the pulmonary inflammatory response and fibrosis caused by PM2.5 after different exposure times were closely associated with histopathological changes. In addition, PM2.5 exposure caused oxidative stress, DNA damage and impairment of DNA repair in a time-dependent manner in the lung. Importantly, exposure to PM2.5 eventually caused apoptosis in the lung through upregulation of cleaved-caspase-3 and downregulation of Bcl-2. Overall, our data demonstrated that PM2.5 led to pulmonary injury in a time-dependent manner via upregulation of proinflammatory and fibrosis-related genes, and activation of the DNA damage response. Our findings provided a novel perspective on the pathophysiology of respiratory diseases caused by airborne pollution.
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Affiliation(s)
- Huixian Zeng
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Wei Chen
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Meizhen Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Yueting Shao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Xun Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Yiguo Jiang
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, China
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4
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Yao S, Chen X, Hu N, Zhang N, Qiu M, Jia Y, Zhang H, Liang J, Chen Z, Zheng L, Zhu J, Mao R, Jiang Y. Benzo[a]pyrene-induced up-regulation of circ_0003552 via ALKBH5-mediated m 6A modification promotes DNA damage in human bronchial epithelial cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122367. [PMID: 37573961 DOI: 10.1016/j.envpol.2023.122367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 08/03/2023] [Accepted: 08/10/2023] [Indexed: 08/15/2023]
Abstract
Benzo [a]pyrene (B [a]P) is a widespread environmental chemical pollutant that has been linked to the development of various diseases. However, the specific mechanism of action remains unclear. In this study, human bronchial epithelial 16HBE and BEAS-2B cells were exposed to B [a]P at 0-32 μM to assess the DNA-damaging effects. B [a]P exposure resulted in elevated expression of γ-H2AX, a marker of DNA damage. The m6A RNA methylation assay showed that B [a]P exposure increased the extent of m6A modification and the demethylase ALKBH5 played an integral role in this process. Moreover, the results of the comet assay and Western blot analysis showed an increase in m6A modification mediated by ALKBH5 that promoted DNA damage. Furthermore, the participation of a novel circular RNA, circ_0003552, was assessed by high-throughput sequencing under the condition of high m6A modification induced by B [a]P exposure. In subsequent functional studies, an interference/overexpression system was created to confirm that circ_0003552 participated in regulation of DNA damage. Mechanistically, circ_0003552 had an m6A binding site that could regulate its generation. This study is the first to report that B [a]P upregulated circ_0003552 through m6A modification, thereby promoting DNA damage. These findings revealed that epigenetics played a key role in environmental carcinogen-induced DNA damage, and the quantitative changes it brought might provide an early biomarker for future medical studies of genetic-related diseases and a new platform for investigations of the interaction between epigenetics and genetics.
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Affiliation(s)
- Shuwei Yao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xintong Chen
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Ningdong Hu
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China
| | - Nan Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Miaoyun Qiu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Han Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jihuan Liang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China
| | - Zehao Chen
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Liting Zheng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jialu Zhu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Rulin Mao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yiguo Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China.
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5
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Li M, Chen W, Cui J, Lin Q, Liu Y, Zeng H, Hua Q, Ling Y, Qin X, Zhang Y, Li X, Lin T, Huang L, Jiang Y. circCIMT Silencing Promotes Cadmium-Induced Malignant Transformation of Lung Epithelial Cells Through the DNA Base Excision Repair Pathway. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206896. [PMID: 36814305 DOI: 10.1002/advs.202206896] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/03/2023] [Indexed: 05/18/2023]
Abstract
Changes in gene expression in lung epithelial cells are detected in cancer tissues during exposure to pollutants, highlighting the importance of gene-environmental interactions in disease. Here, a Cd-induced malignant transformation model in mouse lungs and bronchial epithelial cell lines is constructed, and differences in the expression of non-coding circRNAs are analyzed. The migratory and invasive abilities of Cd-transformed cells are suppressed by circCIMT. A significant DNA damage response is observed after exposure to Cd, which increased further following circCIMT-interference. It is found that APEX1 is significantly down-regulated following Cd exposure. Furthermore, it is demonstrated that circCIMT bound to APEX1 during Cd exposure to mediate the DNA base excision repair (BER) pathway, thereby reducing DNA damage. In addition, simultaneous knockdown of both circCIMT and APEX1 promotes the expression of cancer-related genes and malignant transformation after long-term Cd exposure. Overall, these findings emphasis the importance of genetic-epigenetic interactions in chemical-induced cancer transformation.
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Affiliation(s)
- Meizhen Li
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, P. R. China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Wei Chen
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Jinjin Cui
- School of Public Health, Baotou Medical College, Baotou, 014030, P. R. China
| | - Qiuyi Lin
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Yufei Liu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Huixian Zeng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Qiuhan Hua
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Yihui Ling
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Xiaodi Qin
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Yindai Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Xueqi Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Tianshu Lin
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
| | - Lihua Huang
- School of Public Health, Baotou Medical College, Baotou, 014030, P. R. China
| | - Yiguo Jiang
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, P. R. China
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, P. R. China
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6
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He B, Xu HM, Liu HW, Zhang YF. Unique regulatory roles of ncRNAs changed by PM 2.5 in human diseases. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 255:114812. [PMID: 36963186 DOI: 10.1016/j.ecoenv.2023.114812] [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: 10/18/2022] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
PM2.5 is a type of particulate matter with an aerodynamic diameter smaller than 2.5 µm, and exposure to PM2.5 can adversely damage human health. PM2.5 may impair health through oxidative stress, inflammatory reactions, immune function alterations and chromosome or DNA damage. Through increasing in-depth studies, researchers have found that noncoding RNAs (ncRNAs), particularly microRNAs (miRNAs), circular RNAs (circRNAs) as well as long noncoding RNAs (lncRNAs), might play significant roles in PM2.5-related human diseases via some of the abovementioned mechanisms. Therefore, in this review, we mainly discuss the regulatory function of ncRNAs altered by PM2.5 in human diseases and summarize the potential molecular mechanisms. The findings reveal that these ncRNAs might induce or promote diseases via inflammation, the oxidative stress response, cell autophagy, apoptosis, cell junction damage, altered cell proliferation, malignant cell transformation, disruption of synaptic function and abnormalities in the differentiation and status of immune cells. Moreover, according to a bioinformatics analysis, the altered expression of potential genes caused by these ncRNAs might be related to the development of some human diseases. Furthermore, some ncRNAs, including lncRNAs, miRNAs and circRNAs, or processes in which they are involved may be used as biomarkers for relevant diseases and potential targets to prevent these diseases. Additionally, we performed a meta-analysis to identify more promising diagnostic ncRNAs as biomarkers for related diseases.
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Affiliation(s)
- Bo He
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Hai-Ming Xu
- Department of Occupational and Environmental Medicine, School of Public Health and Management, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Hao-Wen Liu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Yin-Feng Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China.
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7
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Aghaei-Zarch SM, Alipourfard I, Rasoulzadeh H, Najafi S, Aghaei-Zarch F, Partov S, Movafagh A, Jahanara A, Toolabi A, Sheikhmohammadi A, Pour NN, Neghad SK, Ashrafi-Asgarabad A. Non-coding RNAs: An emerging player in particulate matter 2.5-mediated toxicity. Int J Biol Macromol 2023; 235:123790. [PMID: 36822288 DOI: 10.1016/j.ijbiomac.2023.123790] [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: 12/23/2022] [Accepted: 02/17/2023] [Indexed: 02/23/2023]
Abstract
Exposure to air pollution has been connected to around seven million early deaths annually and also contributing to higher than 3 % of disability-adjusted lost life years. Particulate matters (PM) are among the key pollutants that directly discharged or formed due to atmospheric chemical interactions. Among these matters, due of its large surface area, PM2.5 may absorb a different harmful and toxic substances. One of the outcomes of such environmental disturbance is oxidative stress which affects cellular processes including apoptosis, inflammation, and epithelial mesenchymal transition. Non-coding RNAs (ncRNA) such as, miRNAs, lncRNAs, and circRNAs are classified as non-protein coding RNA's. Over the past few years these small molecules have been gaining so much attention since they participate in variety of physiological and pathological processes and their expression change during disease periods. Regarding epigenetic properties, ncRNAs play an important function in organism's response to environmental stimulus. In this manner, it was revealed that exposure to PM2.5 may cause epigenetic reprogramming, such as, ncRNAs signature's alteration, which can be effective concerning pathophysiology state. In this review, we describe PM2.5 impact on ncRNAs and excavate its roles in toxicity caused by PM2.5.
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Affiliation(s)
- Seyed Mohsen Aghaei-Zarch
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Iraj Alipourfard
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Hassan Rasoulzadeh
- Department of Environmental Health Engineering, School of Public Health, Bam University of Medical Sciences, Bam, Iran.
| | - Sajad Najafi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Saber Partov
- Department of Clinical and Biological Sciences, Faculty of Medicine and Surgery, University of Turin, Turin, Italy
| | - Abolfazl Movafagh
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Abbas Jahanara
- Neonatology, Bam University of Medical Sciences, Bam, Iran
| | - Ali Toolabi
- Environmental Health Research Center, School of Health and Nutrition, Lorestan University of Medical Sciences, Khorramabad, Iran.
| | - Amir Sheikhmohammadi
- Department of Environmental Health Engineering, School of Health, Khoy University of Medical Sciences, Khoy, Iran
| | | | | | - Ahad Ashrafi-Asgarabad
- Department of Epidemiology, School of Health, Bam University of Medical Sciences, Bam, Iran
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8
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Feng S, Huang F, Zhang Y, Feng Y, Zhang Y, Cao Y, Wang X. The pathophysiological and molecular mechanisms of atmospheric PM 2.5 affecting cardiovascular health: A review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 249:114444. [PMID: 38321663 DOI: 10.1016/j.ecoenv.2022.114444] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/13/2022] [Accepted: 12/15/2022] [Indexed: 02/08/2024]
Abstract
BACKGROUND Exposure to ambient fine particulate matter (PM2.5, with aerodynamic diameter less than 2.5 µm) is a leading environmental risk factor for global cardiovascular health concern. OBJECTIVE To provide a roadmap for those new to this field, we reviewed the new insights into the pathophysiological and cellular/molecular mechanisms of PM2.5 responsible for cardiovascular health. MAIN FINDINGS PM2.5 is able to disrupt multiple physiological barriers integrity and translocate into the systemic circulation and get access to a range of secondary target organs. An ever-growing body of epidemiological and controlled exposure studies has evidenced a causal relationship between PM2.5 exposure and cardiovascular morbidity and mortality. A variety of cellular and molecular biology mechanisms responsible for the detrimental cardiovascular outcomes attributable to PM2.5 exposure have been described, including metabolic activation, oxidative stress, genotoxicity, inflammation, dysregulation of Ca2+ signaling, disturbance of autophagy, and induction of apoptosis, by which PM2.5 exposure impacts the functions and fates of multiple target cells in cardiovascular system or related organs and further alters a series of pathophysiological processes, such as cardiac autonomic nervous system imbalance, increasing blood pressure, metabolic disorder, accelerated atherosclerosis and plaque vulnerability, platelet aggregation and thrombosis, and disruption in cardiac structure and function, ultimately leading to cardiovascular events and death. Therein, oxidative stress and inflammation were suggested to play pivotal roles in those pathophysiological processes. CONCLUSION Those biology mechanisms have deepen insights into the etiology, course, prevention and treatment of this public health concern, although the underlying mechanisms have not yet been entirely clarified.
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Affiliation(s)
- Shaolong Feng
- The Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, School of Public Health, Guilin Medical University, Guilin 541199, China; Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou 510640, China; The State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Fangfang Huang
- The Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, School of Public Health, Guilin Medical University, Guilin 541199, China
| | - Yuqi Zhang
- The Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, School of Public Health, Guilin Medical University, Guilin 541199, China
| | - Yashi Feng
- The Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, School of Public Health, Guilin Medical University, Guilin 541199, China
| | - Ying Zhang
- The Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Heath, School of Public Health, Guilin Medical University, Guilin 541199, China
| | - Yunchang Cao
- The Department of Molecular Biology, School of Intelligent Medicine and Biotechnology, Guilin Medical University, Guilin 541199, China
| | - Xinming Wang
- Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou 510640, China; The State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
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9
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Qiu M, Zhang N, Yao S, Zhou H, Chen X, Jia Y, Zhang H, Li X, Jiang Y. DNMT3A-mediated high expression of circ_0057504 promotes benzo[a]pyrene-induced DNA damage via the NONO-SFPQ complex in human bronchial epithelial cells. ENVIRONMENT INTERNATIONAL 2022; 170:107627. [PMID: 36399942 DOI: 10.1016/j.envint.2022.107627] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Benzo[a]pyrene (B[a]P) is a class I carcinogen and hazardous environmental pollutant with genetic toxicity. Understanding the molecular mechanisms underlying genetic deterioration and epigenetic alterations induced by environmental contaminants may contribute to the early detection and prevention of cancer. However, the role and regulatory mechanisms of circular RNAs (circRNAs) in the B[a]P-induced DNA damage response (DDR) have not been elucidated. In this study, human bronchial epithelial cell lines (16HBE and BEAS-2B) were exposed to various concentrations of B[a]P, and BALB/c mice were treated with B[a]P intranasally. B[a]P exposure was found to induce DNA damage and upregulate circular RNA hsa_circ_0057504 (circ_0057504) expression in vitro and in vivo. In addition, B[a]P upregulated TMEM194B mRNA and circ_0057504 expression through inhibition of DNA methyltransferase 3 alpha (DNMT3A) expression in vitro. Modulation (overexpression or knockdown) of circ_0057504 expression levels using a lentiviral system in human bronchial epithelial cells revealed that circ_0057504 promoted B[a]P-induced DNA damage. RNA pull-down and western blot assays showed that circ_0057504 interacted with non-POU domain-containing octamer-binding (NONO) and splicing factor proline and glutamine rich (SFPQ) proteins and regulated formation of the NONO-SFPQ protein complex. Thus, our findings indicate that circ_0057504 acts as a novel regulator of DNA damage in human bronchial epithelial cells exposed to B[a]P. The current study reveals novel insights into the role of circRNAs in the regulation of genetic damage, and describes the effect and regulatory mechanisms of circ_0057504 on B[a]P genotoxicity.
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Affiliation(s)
- Miaoyun Qiu
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Nan Zhang
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Shuwei Yao
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Hanyu Zhou
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xintong Chen
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yangyang Jia
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Han Zhang
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Xin Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China
| | - Yiguo Jiang
- State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou 511436, China.
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