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Zhang TY, Kong L, Hao JX, Wang H, Yan ZH, Sun XF, Shen W. Effects of Ochratoxin A exposure on DNA damage in porcine granulosa cells in vitro. Toxicol Lett 2020; 330:167-175. [PMID: 32454083 DOI: 10.1016/j.toxlet.2020.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/09/2020] [Accepted: 05/11/2020] [Indexed: 01/19/2023]
Abstract
Ochratoxin A (OTA), a feed mycotoxin, tends to impair the reproductive performance of animals. Our previous studies have demonstrated that OTA exposure inhibits porcine ovarian granulosa cell (GC) proliferation and induces their apoptosis, but the underlying toxic mechanism is still uncertain. In this study, we explored the OTA exposure on porcine GCs in vitro and found that OTA exposure inhibited the proliferation of porcine GCs and arrested cell cycle of GCs in the G2/M phase. The results based on RNA-Seq revealed that 20 μM and 40 μM OTA exposure increase DNA damage of porcine GCs in vitro. The differentially expressed genes (DEGs) of 40 μM OTA exposure were enriched in the pathways of mismatch repair, nucleotide excision repair and homologous recombination in DNA replication compared with control group and 20 μM OTA exposure group. Meanwhile, OTA exposure increased the expression levels of DNA double-strand breaks (DSBs) gene γ-H2AX, and DNA repair related genes, such as BRCA1, XRCC1, PARP1, and RAD51. Above all, our research revealed that OTA might exert deleterious effects on porcine ovarian GCs, influencing DNA repair-related biological processes and causing DNA damage response.
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Affiliation(s)
- Tian-Yu Zhang
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China; School of Public Health, Qingdao University, Qingdao 266034, China
| | - Li Kong
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Jia-Xing Hao
- Center for Reproductive Medicine, Qingdao Women's and Children's Hospital, Qingdao University, Qingdao 266034, China
| | - Han Wang
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Zi-Hui Yan
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiao-Feng Sun
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Shen
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China.
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Lee KW, Chung KS, Lee JH, Choi JH, Choi SY, Kim S, Lee JY, Lee KT. Resveratrol analog, N-(4-methoxyphenyl)-3,5-dimethoxybenzamide induces G 2/M phase cell cycle arrest and apoptosis in HeLa human cervical cancer cells. Food Chem Toxicol 2018; 124:101-111. [PMID: 30508562 DOI: 10.1016/j.fct.2018.11.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 11/27/2018] [Accepted: 11/29/2018] [Indexed: 12/14/2022]
Abstract
In this study, several resveratrol analogs were synthesized and evaluated in search of a more effective anti-proliferative resveratrol analog. Among the evaluated resveratrol analogs, we have identified N-(4-methoxyphenyl)-3,5-dimethoxybenamide (MPDB) as a potent anti-proliferative compound. Treatment with MPDB resulted in G2/M phase cell cycle arrest, which was accompanied by alteration of G2/M-related protein expression and phosphorylation. MPDB-induced G2/M arrest was blocked by transfection of ATM/ATR siRNAs, indicating the critical role of ATM/ATR in G2/M phase arrest. In addition, treatment with MPDB displayed the activation of caspase and decreased Bcl-xl protein expression after 20 h in HeLa cells. Moreover, MPDB increased cytosolic cytochrome c release and Fas and Fas-L protein expression, indicating intrinsic and extrinsic apoptosis pathway, respectively. These results suggest that MPDB is a new and potent compound that induces ATM/ATR-dependent G2/M phase cell cycle arrest and apoptosis, implicating it as a putative candidate in the investment of cervical cancer therapy.
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Affiliation(s)
- Kyung-Won Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea; Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Kyung-Sook Chung
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Jeong-Hun Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea; Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Jung-Hye Choi
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea; Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Sang Yoon Choi
- Korea Food Research Institute, 245 Nongsaengmyeong-ro, Wanju, 55365, Republic of Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Seoul, 08826, Republic of Korea
| | - Jae Yeol Lee
- Research Institute for Basic Sciences and Department of Chemistry, College of Sciences, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea; Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul, 02447, Republic of Korea.
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Mirghani H, Amen F, Tao Y, Deutsch E, Levy A. Increased radiosensitivity of HPV-positive head and neck cancers: Molecular basis and therapeutic perspectives. Cancer Treat Rev 2015; 41:844-52. [PMID: 26476574 DOI: 10.1016/j.ctrv.2015.10.001] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 09/22/2015] [Accepted: 10/04/2015] [Indexed: 12/27/2022]
Abstract
Human papillomavirus driven head and neck squamous cell carcinoma (HNSCC), particularly oropharyngeal squamous cell carcinoma (OPSCC), are characterized by a significant survival advantage over their HPV-negative counterparts. Although the reasons behind this are still not fully elucidated, it is widely accepted that these tumors have a higher response to ionizing radiation that might explain their favorable outcomes. Potential underlying intrinsic mechanisms include impaired DNA repair abilities, differences in activated repopulation-signaling pathways and cell cycle control mechanisms. The role of the microenvironment is increasingly highlighted, particularly tumor oxygenation and the immune response. Recent studies have shown a distinct pattern of intratumoral immune cell infiltrates, according to HPV status, and have suggested that an increased cytotoxic T-cell based antitumor immune response is involved in improved prognosis of patients with HPV-positive OPSCC. These significant milestones, in the understanding of HPV-induced HNSCC, pave the way to new therapeutic opportunities. This article reviews the current evidence on the biological basis of increased radiosensitivity in HPV-positive HNSCC and discusses potential therapeutic implications.
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Affiliation(s)
- Haïtham Mirghani
- Department of Otolaryngology - Head and Neck Surgery, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, Villejuif, France.
| | - Furrat Amen
- Department of Otolaryngology, Peterborough City Hospital and Addenbrooke's Hospital, Cambridge, UK
| | - Yungan Tao
- Department of Radiation Oncology, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, Villejuif, France
| | - Eric Deutsch
- Department of Radiation Oncology, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, Villejuif, France; Université Paris Sud, Faculté de Médecine, Kremlin Bicêtre 94270, France; INSERM U1030 Molecular Radiotherapy, Cancer Research Institute, Villejuif, France
| | - Antonin Levy
- Department of Radiation Oncology, Gustave Roussy Cancer Campus, 114 rue Edouard Vaillant, Villejuif, France; Université Paris Sud, Faculté de Médecine, Kremlin Bicêtre 94270, France; INSERM U1030 Molecular Radiotherapy, Cancer Research Institute, Villejuif, France
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Liu J, Wu S, Shen H, Cui J, Wang Y, Xing L, Wang J, Yan X, Zhang X. Ochratoxin A induces DNA damage and G2 phase arrest in human esophageal epithelium Het-1A cells in vitro . J Toxicol Sci 2015; 40:657-65. [PMID: 26354382 DOI: 10.2131/jts.40.657] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Jing Liu
- Department of Pathology, General Hospital of Chinese People’s Armed Police Force, China
- Laboratory of Pathology, Hebei Medical University, China
| | - Sha Wu
- Laboratory of Pathology, Hebei Medical University, China
| | - Haitao Shen
- Laboratory of Pathology, Hebei Medical University, China
| | - Jinfeng Cui
- Department of Pathology, The Second Hospital, Hebei Medical University, China
| | - Yuan Wang
- Department of Pathology, The Second Hospital, Hebei Medical University, China
| | - Lingxiao Xing
- Laboratory of Pathology, Hebei Medical University, China
| | - Junling Wang
- Laboratory of Pathology, Hebei Medical University, China
| | - Xia Yan
- Laboratory of Pathology, Hebei Medical University, China
| | - Xianghong Zhang
- Laboratory of Pathology, Hebei Medical University, China
- Department of Pathology, The Second Hospital, Hebei Medical University, China
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Abstract
Protein phosphorylation is a fundamental post-translational modification. It regulates a large number of critical cellular processes (differentiation, division, proliferation, apoptosis). Cell division is a process including a series of phases by which a parent cell divides into two daughter cells. The cells enter these stages then progress within the cell division under an accurate control by many proteins. These proteins are activated by phosphorylation. Cyclin-dependent kinases are responsible for this phosphorylation and therefore represent potential therapeutic targets especially in oncology.
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