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Zhang Z, Peng Y, Peng X, Xiao D, Shi Y, Tao Y. Effects of radiation therapy on tumor microenvironment: an updated review. Chin Med J (Engl) 2023; 136:2802-2811. [PMID: 37442768 PMCID: PMC10686612 DOI: 10.1097/cm9.0000000000002535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Indexed: 07/15/2023] Open
Abstract
ABSTRACT Cancer is a major threat to human health and causes death worldwide. Research on the role of radiotherapy (RT) in the treatment of cancer is progressing; however, RT not only causes fatal DNA damage to tumor cells, but also affects the interactions between tumor cells and different components of the tumor microenvironment (TME), including immune cells, fibroblasts, macrophages, extracellular matrix, and some soluble products. Some cancer cells can survive radiation and have shown strong resistance to radiation through interaction with the TME. Currently, the complex relationships between the tumor cells and cellular components that play major roles in various TMEs are poorly understood. This review explores the relationship between RT and cell-cell communication in the TME from the perspective of immunity and hypoxia and aims to identify new RT biomarkers and treatment methods in lung cancer to improve the current status of unstable RT effect and provide a theoretical basis for further lung cancer RT sensitization research in the future.
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Affiliation(s)
- Zewen Zhang
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Yuanhao Peng
- Department of Pathology, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, School of Basic Medicine, Central South University, Changsha, Hunan 410078, China
| | - Xin Peng
- Department of Pathology, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, School of Basic Medicine, Central South University, Changsha, Hunan 410078, China
| | - Desheng Xiao
- Department of Pathology, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, School of Basic Medicine, Central South University, Changsha, Hunan 410078, China
| | - Ying Shi
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
| | - Yongguang Tao
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute, Central South University, Changsha, Hunan 410078, China
- Department of Pathology, Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, School of Basic Medicine, Central South University, Changsha, Hunan 410078, China
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, China
- Department of Thoracic Surgery, Hunan Key Laboratory of Early Diagnosis and Precision Therapy in Lung Cancer, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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Wu S, Wang Y, Iqbal M, Mehmood K, Li Y, Tang Z, Zhang H. Challenges of fluoride pollution in environment: Mechanisms and pathological significance of toxicity - A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 304:119241. [PMID: 35378201 DOI: 10.1016/j.envpol.2022.119241] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 03/21/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Fluoride is an important trace element in the living body. A suitable amount of fluoride has a beneficial effect on the body, but disproportionate fluoride entering the body will affect various organs and systems, especially the liver, kidneys, nervous system, endocrine system, reproductive system, bone, and intestinal system. In recent years, with the rapid development of agriculture and industry, fluoride pollution has become one of the important factors of environmental pollution, and fluoride pollution in any form is becoming a serious problem. Although countries around the world have made great breakthroughs in controlling fluoride pollution, however fluorosis still exists. A large amount of fluoride accumulated in animals will not only produce the toxic effects, but it also causes cell damage and affect the normal physiological activities of the body. There is no systematic description of the damage mechanism of fluoride. Therefore, the study on the toxicity mechanism of fluoride is still in progress. This review summarizes the existing information of several molecular mechanisms of the fluoride toxicity comprehensively, aiming to clarify the toxic mechanism of fluoride on various body systems. We have also summerized the pathological changes of those organ systems after fluoride poisoning in order to provide some ideas and solutions to the reader for the prevention and control of modern fluoride pollution.
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Affiliation(s)
- Shouyan Wu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yajing Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Mujahid Iqbal
- Department of Pathology, Cholistan University of Veterinary and Animal Sciences (CUVAS), Bahawalpur, 63100, Pakistan
| | - Khalid Mehmood
- Department of Pathology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, 63100, Pakistan
| | - Ying Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zhaoxin Tang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Hui Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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Proteomic Research on the Antitumor Properties of Medicinal Mushrooms. Molecules 2021; 26:molecules26216708. [PMID: 34771120 PMCID: PMC8588050 DOI: 10.3390/molecules26216708] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 12/22/2022] Open
Abstract
Medicinal mushrooms are increasingly being recognized as an important therapeutic modality in complementary oncology. Until now, more than 800 mushroom species have been known to possess significant pharmacological properties, of which antitumor and immunomodulatory properties have been the most researched. Besides a number of medicinal mushroom preparations being used as dietary supplements and nutraceuticals, several isolates from mushrooms have been used as official antitumor drugs in clinical settings for several decades. Various proteomic approaches allow for the identification of a large number of differentially regulated proteins serendipitously, thereby providing an important platform for a discovery of new potential therapeutic targets and approaches as well as biomarkers of malignant disease. This review is focused on the current state of proteomic research into antitumor mechanisms of some of the most researched medicinal mushroom species, including Phellinus linteus, Ganoderma lucidum, Auricularia auricula, Agrocybe aegerita, Grifola frondosa, and Lentinus edodes, as whole body extracts or various isolates, as well as of complex extract mixtures.
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ROS as Regulators of Cellular Processes in Melanoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1208690. [PMID: 34725562 PMCID: PMC8557056 DOI: 10.1155/2021/1208690] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/28/2021] [Indexed: 12/16/2022]
Abstract
In this review, we examine the multiple roles of ROS in the pathogenesis of melanoma, focusing on signal transduction and regulation of gene expression. In recent years, different studies have analyzed the dual role of ROS in regulating the redox system, with both negative and positive consequences on human health, depending on cell concentration of these agents. High ROS levels can result from an altered balance between oxidant generation and intracellular antioxidant activity and can produce harmful effects. In contrast, low amounts of ROS are considered beneficial, since they trigger signaling pathways involved in physiological activities and programmed cell death, with protective effects against melanoma. Here, we examine these beneficial roles, which could have interesting implications in melanoma treatment.
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Liu ZB, Zhang T, Ye X, Liu ZQ, Sun X, Zhang LL, Wu CJ. Natural substances derived from herbs or plants are promising sources of anticancer agents against colorectal cancer via triggering apoptosis. J Pharm Pharmacol 2021; 74:162-178. [PMID: 34559879 DOI: 10.1093/jpp/rgab130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/18/2021] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Nowadays, one of the most common gastrointestinal cancers is colorectal cancer (CRC). Chemotherapy is still one of the main methods to treat cancer. However, the currently available synthetic chemotherapy drugs often cause serious adverse reactions. Apoptosis is generally considered as an ideal way for induction the death of tumour cells without the body's inflammatory response, and it is reported that lots of natural agents could trigger various cancer cells to apoptosis. The overarching aim of this project was to elucidate the specific mechanisms by which natural substances induce apoptosis in CRC cells and to be used as an alternative therapeutic option in the future. KEY FINDINGS The mechanisms for the pro-apoptotic effects of natural substances derived from herbs or plants include death receptor pathway, mitochondrial pathway, endoplasmic reticulum stress pathway, related signal transduction pathways (PI3K/Akt, MAPK, p53 signalling), and so on. SUMMARY This paper updated this information regarding the anti-tumour effects of natural agents via induction of apoptosis against CRC, which would be beneficial for future new drug research regarding natural products from herbs or plants.
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Affiliation(s)
- Zi-Bo Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Ting Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xun Ye
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Zi-Qi Liu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Xue Sun
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
| | - Li-Lin Zhang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, P.R. China
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The Most Competent Plant-Derived Natural Products for Targeting Apoptosis in Cancer Therapy. Biomolecules 2021; 11:biom11040534. [PMID: 33916780 PMCID: PMC8066452 DOI: 10.3390/biom11040534] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/17/2021] [Accepted: 03/31/2021] [Indexed: 02/06/2023] Open
Abstract
Cancer is a challenging problem for the global health community, and its increasing burden necessitates seeking novel and alternative therapies. Most cancers share six basic characteristics known as "cancer hallmarks", including uncontrolled proliferation, refractoriness to proliferation blockers, escaping apoptosis, unlimited proliferation, enhanced angiogenesis, and metastatic spread. Apoptosis, as one of the best-known programmed cell death processes, is generally promoted through two signaling pathways, including the intrinsic and extrinsic cascades. These pathways comprise several components that their alterations can render an apoptosis-resistance phenotype to the cell. Therefore, targeting more than one molecule in apoptotic pathways can be a novel and efficient approach for both identifying new anticancer therapeutics and preventing resistance to therapy. The main purpose of this review is to summarize data showing that various plant extracts and plant-derived molecules can activate both intrinsic and extrinsic apoptosis pathways in human cancer cells, making them attractive candidates in cancer treatment.
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Yang H, Liu BF, Xie FJ, Yang WL, Cao N. Luteolin induces mitochondrial apoptosis in HT29 cells by inhibiting the Nrf2/ARE signaling pathway. Exp Ther Med 2020; 19:2179-2187. [PMID: 32104282 PMCID: PMC7027334 DOI: 10.3892/etm.2020.8464] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 08/30/2019] [Indexed: 02/06/2023] Open
Abstract
The aim of the current study was to investigate luteolin-induced apoptosis and the molecular mechanisms underlying it in HT29 cells. A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to assess the cytotoxicity of luteolin on HT29 cells, and a dichloro-dihydro-fluorescein diacetate assay was used to measure cellular levels of reactive oxygen species (ROS). The effects of luteolin on the mitochondrial membrane potential were also evaluated. Bax and Bcl-2 mRNA expression were determined using reverse transcription-quantitative PCR. Additionally, western blot analysis was performed to assess changes in cytochrome c and caspase-3 protein expression. Localization of nuclear factor erythroid 2-related factor 2 (Nrf2) in the nucleus was also assessed using immunofluorescence. Luteolin exhibited cytotoxicity on HT29 cells in a time- and concentration-dependent manner. Additionally, ROS production was indicated to be increased and ROS scavenging was decreased, which resulted in a significant increase in the levels of ROS in the cells. The mitochondrial membrane potential was indicated to decrease following luteolin treatment. At the molecular level, luteolin significantly increased the mRNA expression of Bax and the protein expression of cytochrome c, caspase-3, p47phox and p22phox. The results revealed that luteolin decreased Bcl-2 protein expression and inhibited the nuclear localization of Nrf2. In conclusion, the current study indicated that luteolin inhibited HT29 cell proliferation and induced apoptosis via the mitochondrial pathway.
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Affiliation(s)
- Huan Yang
- Department of General Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Bing-Fang Liu
- Department of Nuclear Magnetic Resonance, The Second Clinical Medical College of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Fu-Jia Xie
- Department of General Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650000, P.R China
| | - Wei-Lin Yang
- Department of General Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Nong Cao
- Department of General Surgery, First Hospital of Lanzhou University, Lanzhou, Gansu 730000, P.R. China
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Wang HW, Zhang Y, Tan PP, Jia LS, Chen Y, Zhou BH. Mitochondrial respiratory chain dysfunction mediated by ROS is a primary point of fluoride-induced damage in Hepa1-6 cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113359. [PMID: 31614248 DOI: 10.1016/j.envpol.2019.113359] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 09/12/2019] [Accepted: 10/06/2019] [Indexed: 05/20/2023]
Abstract
To evaluate the mechanism of fluoride (F) mitochondrial toxicity, we cultured Hepa1-6 cells with different F concentrations (0, 1 and 2 mmoL/L) and determined cell pathological morphology, mitochondrial respiratory chain damage and cell cycle change. Results showed that the activities and mRNA expression levels of antioxidant enzymes considerably decreased, whereas the contents of reactive oxygen species (ROS), malondialdehyde (MDA) and nitric oxide (NO) markedly increased. Breakage of mitochondrial cristae and substantial vacuolated mitochondria were observed by transmission electron microscopy. These results indicate the F-induced oxidative damage in Hepa1-6 cells. The enzyme activities of mitochondrial complexes I, II, III and IV were disordered in Hepa1-6 cells treated by excessive F, thereby indicating a remarkable down-regulation. Further research showed that complex subunits also demonstrated the development of disorder, in which the protein expressions levels of NDUFV2 and SDHA were substantially down-regulated, whereas those of CYC1 and COX Ⅳ were markedly up-regulated. Reductions in ATP and mitochondrial membrane potential were detected with the dysfunction of the mitochondrial respiratory chain. The G2/M phase arrest of the cell cycle in Hepa1-6 cells was measured via flow cytometry, and the up-regulated protein expressions of Cyt c, caspase 9, caspase 3 and substantial apoptotic cells were determined. In summary, this study demonstrated that ROS-mediated mitochondrial respiratory chain dysfunction causes F-induced Hepa1-6 cell damage.
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Affiliation(s)
- Hong-Wei Wang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Yan Zhang
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Pan-Pan Tan
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Liu-Shu Jia
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Yu Chen
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Bian-Hua Zhou
- Henan Key Laboratory of Environmental and Animal Product Safety, Henan University of Science and Technology, Luoyang 471003, Henan, China.
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Yin Z, Li C, Wang J, Xue L. Myeloid-derived suppressor cells: Roles in the tumor microenvironment and tumor radiotherapy. Int J Cancer 2018; 144:933-946. [PMID: 29992569 DOI: 10.1002/ijc.31744] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 06/28/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Zhongnan Yin
- Biobank; Peking University Third Hospital; Beijing China
| | - Chunxiao Li
- Department of Radiation Oncology; Peking University Third Hospital; Beijing China
| | - Junjie Wang
- Department of Radiation Oncology; Peking University Third Hospital; Beijing China
| | - Lixiang Xue
- Biobank; Peking University Third Hospital; Beijing China
- Department of Radiation Oncology; Peking University Third Hospital; Beijing China
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Zhang Y, Xu Z, Sun Y, Chi P, Lu X. Knockdown of KLK11 reverses oxaliplatin resistance by inhibiting proliferation and activating apoptosis via suppressing the PI3K/AKT signal pathway in colorectal cancer cell. Onco Targets Ther 2018; 11:809-821. [PMID: 29497313 PMCID: PMC5820466 DOI: 10.2147/ott.s151867] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Introduction Kallikrein 11 (KLK11) plays a crucial role in drug-resistance to oxaliplatin (L-OHP) in the treatment of metastatic colorectal cancer (mCRC). The study aimed to investigate the role of KLK11 in chemoresistance, and to clarify the mechanism underlying reverse of L-OHP resistance by knockdown of KLK11. Materials and Methods Resistance to oxaliplatin was induced in HCT-8 (HCT-8/L-OHP) colorectal adenocarcinoma cell lines by exposing cells to increasing concentrations of L-OHP. MTT, RT-qPCR, and Western blot were used to evaluate the resistance to L-OHP. We then knocked down KLK11 in HCT-8/L-OHP cells to explore the mechanism through which KLK11 reverses L-OHP resistance. The mRNA and protein expression of KLK11 in tissues from mCRC patients were detected by RT-qPCR and immunohistochemistry. Results The drug resistance index (RI) of HCT-8/L-OHP cell line to L-OHP, 5-Fluorouracil (5-FU), Irinotecan (CPT-11), Vincristine (VCR) and Cis-diamminedichloroplatinum (CDDP) were 10, 5.35, 3.23, 1.28, and 6.64, respectively. Increased expression of multi-drug resistant genes ABCC1, ABCB1, GSTP1 and ERCC1 were detected in HCT-8/L-OHP cell line. Moreover, the activated PI3K/AKT pathway was related to L-OHP-resistance. Knockdown of KLK11 in HCT-8/L-OHP cell reversed L-OHP-resistance by inhibiting cell growth and activating apoptosis via suppressing the PI3K/AKT signaling pathway. Moreover, high expression of KLK11 in chemoresistant-patients was associated with lymph node metastases and histopathology. Conclusion KLK11 was highly expressed in chemoresistant-patients and L-OHP-resistant cell lines. Moreover, L-OHP resistance was associated with activated PI3K/AKT signal pathway. Knockdown of KLK11 can reverse L-OHP resistance by blocking PI3K/AKT signaling pathway.
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Affiliation(s)
- Yiyi Zhang
- Department of Colorectal Surgery, Fujian Medical University Union Hospital, Fuzhou, People's Republic of China
| | - Zongbin Xu
- Department of Colorectal Surgery, Fujian Medical University Union Hospital, Fuzhou, People's Republic of China
| | - Yanwu Sun
- Department of Colorectal Surgery, Fujian Medical University Union Hospital, Fuzhou, People's Republic of China
| | - Pan Chi
- Department of Colorectal Surgery, Fujian Medical University Union Hospital, Fuzhou, People's Republic of China
| | - Xingrong Lu
- Department of Colorectal Surgery, Fujian Medical University Union Hospital, Fuzhou, People's Republic of China
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Finimundy TC, Abreu RM, Bonetto N, Scariot FJ, Dillon AJ, Echeverrigaray S, Barros L, Ferreira IC, Henriques JA, Roesch-Ely M. Apoptosis induction by Pleurotus sajor-caju (Fr.) Singer extracts on colorectal cancer cell lines. Food Chem Toxicol 2018; 112:383-392. [DOI: 10.1016/j.fct.2018.01.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/09/2018] [Accepted: 01/10/2018] [Indexed: 01/01/2023]
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Wang HW, Zhao WP, Liu J, Tan PP, Zhang C, Zhou BH. Fluoride-induced oxidative stress and apoptosis are involved in the reducing of oocytes development potential in mice. CHEMOSPHERE 2017; 186:911-918. [PMID: 28826138 DOI: 10.1016/j.chemosphere.2017.08.068] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/12/2017] [Accepted: 08/14/2017] [Indexed: 06/07/2023]
Abstract
The present study was conducted to investigate the mechanisms of excessive-fluoride-induced reduction of oocyte development potential in mice. The development morphology of oocyte and the changes of pathomorphology in ovary were observed. The protein expression levels of apoptosis factors, including Bax, Bcl-2, casepase-3, casepase-9 and cytochrome c, and the mRNA expression levels of antioxidant enzymes, including SOD1, GSH-Px1, CAT and inducible nitric oxide synthase were measured by Western blot and real-time PCR, respectively. DNA damage in the ovary was analysed by single cell gel electrophoresis and TUNEL staining. Results indicated that the structure and function of ovarian cells were seriously damaged, followed, the development potential of oocyte was reduced by excessive fluoride. The expression levels of apoptosis factors were up-regulated and antioxidant enzymes were significantly down-regulated. Meanwhile, the contents of ROS, MDA, NO and iNOS were significantly increased. Whereas, the activities of SOD1, GSH-Px1 and CAT was significantly decreased compared with the control group. Simultaneously, the results of DNA analysis indicated that the tail length and tailing ratio of ovarian cells were significantly increased in the fluoride group. In summary, the results provided compelling evidence that excessive fluoride intake can reduce the development potential of oocyte by inducing oxidative stress and apoptosis in the ovary of female mice.
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Affiliation(s)
- Hong-Wei Wang
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China.
| | - Wen-Peng Zhao
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China
| | - Jing Liu
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China
| | - Pan-Pan Tan
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China
| | - Cai Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China
| | - Bian-Hua Zhou
- College of Animal Science and Technology, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, Henan, 471000, China.
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Lin JC, Tsao MF, Lin YJ. Differential Impacts of Alternative Splicing Networks on Apoptosis. Int J Mol Sci 2016; 17:ijms17122097. [PMID: 27983653 PMCID: PMC5187897 DOI: 10.3390/ijms17122097] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/26/2016] [Accepted: 12/02/2016] [Indexed: 12/16/2022] Open
Abstract
Apoptosis functions as a common mechanism to eliminate unnecessary or damaged cells during cell renewal and tissue development in multicellular organisms. More than 200 proteins constitute complex networks involved in apoptotic regulation. Imbalanced expressions of apoptosis-related factors frequently lead to malignant diseases. The biological functions of several apoptotic factors are manipulated through alternative splicing mechanisms which expand gene diversity by generating discrete variants from one messenger RNA precursor. It is widely observed that alternatively-spliced variants encoded from apoptosis-related genes exhibit differential effects on apoptotic regulation. Alternative splicing events are meticulously regulated by the interplay between trans-splicing factors and cis-responsive elements surrounding the regulated exons. The major focus of this review is to highlight recent studies that illustrate the influences of alternative splicing networks on apoptotic regulation which participates in diverse cellular processes and diseases.
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Affiliation(s)
- Jung-Chun Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
| | - Mei-Fen Tsao
- Department of Laboratory Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan.
| | - Ying-Ju Lin
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
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