1
|
Mitra S, Das R, Emran TB, Labib RK, Noor-E-Tabassum, Islam F, Sharma R, Ahmad I, Nainu F, Chidambaram K, Alhumaydhi FA, Chandran D, Capasso R, Wilairatana P. Diallyl Disulfide: A Bioactive Garlic Compound with Anticancer Potential. Front Pharmacol 2022; 13:943967. [PMID: 36071845 PMCID: PMC9441672 DOI: 10.3389/fphar.2022.943967] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/21/2022] [Indexed: 12/11/2022] Open
Abstract
Cancer is a life-threatening disease caused by the uncontrolled division of cells, which culminates in a solid mass of cells known as a tumor or liquid cancer. It is the leading cause of mortality worldwide, and the number of cancer patients has been increasing at an alarming rate, with an estimated 20 million cases expected by 2030. Thus, the use of complementary or alternative therapeutic techniques that can help prevent cancer has been the subject of increased attention. Garlic, the most widely used plant medicinal product, exhibits a wide spectrum of biological activities, including antibacterial, hypo-lipidemic, antithrombotic, and anticancer effects. Diallyl disulfide (DADS) is a major organosulfur compound contained within garlic. Recently, several experimental studies have demonstrated that DADS exhibits anti-tumor activity against many types of tumor cells, including gynecological cancers (cervical cancer, ovarian cancer), hematological cancers (leukemia, lymphoma), lung cancer, neural cancer, skin cancer, prostate cancer, gastrointestinal tract and associated cancers (esophageal cancer, gastric cancer, colorectal cancer), hepatocellular cancer cell line, etc. The mechanisms behind the anticancer action of DADS include epithelial-mesenchymal transition (EMT), invasion, and migration. This article aims to review the available information regarding the anti-cancer potential of DADS, as well as summarize its mechanisms of action, bioavailability, and pharmacokinetics from published clinical and toxicity studies.
Collapse
|
2
|
Crassolide Induces G2/M Cell Cycle Arrest, Apoptosis, and Autophagy in Human Lung Cancer Cells via ROS-Mediated ER Stress Pathways. Int J Mol Sci 2022; 23:ijms23105624. [PMID: 35628435 PMCID: PMC9144222 DOI: 10.3390/ijms23105624] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/05/2022] [Accepted: 05/15/2022] [Indexed: 02/07/2023] Open
Abstract
Crassolide, a cembranoid diterpene extracted from the soft coral Lobophytum crissum, has been proven to possess antioxidant and immunomodulatory properties. In the present study, we assessed the anticancer effects of crassolide on human H460 non-small-cell lung cancer (NSCLC) cells. We found that crassolide exerted cytotoxic effects on H460 cancer cells in vitro, inducing G2/M phase arrest and apoptosis. In addition, in H460 cells exposed to crassolide, the expression of the autophagy-related proteins LC3-II and beclin was increased, while the expression of p62 was decreased. Moreover, inhibiting autophagy with chloroquine (CQ) suppressed the crassolide-induced G2/M arrest and apoptosis of H460 cells. Moreover, we also found that crassolide induced endoplasmic reticulum (ER) stress in lung cancer cells by increasing the expression of ER stress marker proteins and that the crassolide-induced G2/M arrest, apoptosis, and autophagy were markedly attenuated by the ER stress inhibitor 4-phenylbutyric acid (4-PBA). Furthermore, we found that crassolide promoted reactive oxygen species (ROS) production by H460 cells and that the ROS inhibitor N-acetylcysteine (NAC) decreased the crassolide-induced ER stress, G2/M arrest, apoptosis, and autophagy. In conclusion, our findings show that crassolide inhibits NSCLC cell malignant biological behaviors for the first time, suggesting that this effect may be mechanistically achieved by inducing G2/M arrest, apoptosis, and autophagy through ROS accumulation, which activates the ER stress pathway. As a result of our findings, we now have a better understanding of the molecular mechanism underlying the anticancer effect of crassolide, and we believe crassolide might be a candidate for targeted cancer therapy.
Collapse
|
3
|
Xia L, Lin J, Su J, Oyang L, Wang H, Tan S, Tang Y, Chen X, Liu W, Luo X, Tian Y, Liang J, Su Q, Liao Q, Zhou Y. Diallyl disulfide inhibits colon cancer metastasis by suppressing Rac1-mediated epithelial-mesenchymal transition. Onco Targets Ther 2019; 12:5713-5728. [PMID: 31410018 PMCID: PMC6645609 DOI: 10.2147/ott.s208738] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/06/2019] [Indexed: 12/14/2022] Open
Abstract
Background Prevention of epithelial-mesenchymal transition (EMT) provides a novel treatment strategy for tumor metastasis. Our previous studies have shown that diallyl disulfide (DADS) inhibits Ras related C3 botulinum toxin substrate1 (Rac1) expression, being a potential agent that suppresses migration and invasion of colon cancer cells. The study provides information on the underlying mechanisms. Methods The expression of Rac1 and EMT markers (vimentin, N-cadherin and E-cadherin) in colon cancer samples was detected. Colon cancer cell lines treated with or without DADS were used to examine EMT markers, Rac1 and its related molecules. Various cell functions related to metastasis were performed in vitro, and further confirmed in vivo. Results Rac1 was highly expressed in colon cancer, and associated with aberrant expression of EMT markers and poor prognosis. Rac1 overexpression induced cell migration and invasion in vitro and metastasis in vivo with down-regulation of E-cadherin and up-regulation of N-cadherin, vimentin, and snail1, whereas inhibition of Rac1 impaired the oncogenic function. DADS suppressed Rac1 expression and activity via inhibition of PI3K/Akt pathway, thus suppressing EMT and invasion and migration of colon cancer cells. The tumor inhibition of DADS was enhanced by knockdown of Rac1, but antagonized by overexpression of Rac1. We further found that DADS blocked EMT via targeting the Rac1-mediated PAK1-LIMK1-Cofilins signaling. Conclusion Rac1 is a potential target molecule for the inhibitory effect of DADS on EMT and invasion and metastasis of colon cancer cells.
Collapse
Affiliation(s)
- Longzheng Xia
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jingguan Lin
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jian Su
- Cancer Research Institute, University of South China, Hengyang, Hunan, People's Republic of China
| | - Linda Oyang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Heran Wang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Shiming Tan
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yanyan Tang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Xiaoyan Chen
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Wenbin Liu
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Xia Luo
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yutong Tian
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Jiaxin Liang
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Qi Su
- Cancer Research Institute, University of South China, Hengyang, Hunan, People's Republic of China
| | - Qianjin Liao
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| | - Yujuan Zhou
- Key Laboratory of Translational Radiation Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University and Hunan Cancer Hospital, Changsha 410013, Hunan, People's Republic of China
| |
Collapse
|
4
|
Liu Y, Fan D. Ginsenoside Rg5 induces G2/M phase arrest, apoptosis and autophagy via regulating ROS-mediated MAPK pathways against human gastric cancer. Biochem Pharmacol 2019; 168:285-304. [PMID: 31301277 DOI: 10.1016/j.bcp.2019.07.008] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 07/08/2019] [Indexed: 12/20/2022]
Abstract
Ginsenoside Rg5, a rare saponin belonging to the family of protopanaxadiol ginsenosides, has been demonstrated to have potential anti-tumor effects in various cancers. However, the effect of Rg5 on human gastric cancer and the underlying molecular mechanisms remain to be elucidated. In this study, Rg5 could suppress cell proliferation by causing G2/M phase arrest. Treatment with Rg5 could induce apoptosis through the extrinsic death receptor and intrinsic mitochondrial pathways. Autophagy induction was demonstrated by the formation of autophagosomes and autophagy-related proteins. Rg5-induced cell death was inhibited by the autophagy inhibitor 3-MA and apoptosis inhibitor Z-VAD-FMK. Moreover, the suppression of apoptosis weakened Rg5-induced autophagy, while the inhibition of autophagy attenuated Rg5-induced apoptosis. Further studies revealed that Rg5 induced ROS production and activated MAPK signaling pathways. The ROS scavenger NAC markedly diminished G2/M arrest, apoptosis, autophagy and activation of MAPK pathways induced by Rg5. The p38 inhibitor SB203580 or knockdown of p38 by siRNA clearly reversed Rg5-induced apoptosis and G2/M arrest. The JNK inhibitor SP600125 or knockdown of JNK by siRNA markedly attenuated Rg5-induced G2/M arrest, apoptosis and autophagy. The inhibition of ERK inhibitor U0126 or knockdown of ERK by siRNA clearly restored Rg5-induced apoptosis and autophagy. Finally, Rg5 significantly suppressed the growth of xenograft gastric tumors with fewer side effects. Overall, the evidence suggested that Rg5 is a novel and promising strategy for the treatment of gastric cancer owing to its high efficacy, multiple mechanisms and fewer side effects.
Collapse
Affiliation(s)
- Yannan Liu
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China; Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China; Biotech. & Biomed. Reserch Institute, Northwest University, Taibai North Road 229, Xi'an 710069 Shaanxi, China
| | - Daidi Fan
- Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China; Shaanxi R&D Center of Biomaterials and Fermentation Engineering, School of Chemical Engineering, Northwest University, 229 North Taibai Road, Xi'an, Shaanxi 710069, China; Biotech. & Biomed. Reserch Institute, Northwest University, Taibai North Road 229, Xi'an 710069 Shaanxi, China.
| |
Collapse
|
5
|
Ren H, Sun L, Yan H. Design, Synthesis, and Biological Evaluation of 1,4-Bis(2,3-dihydro-5-oxopyrrol-4-yl)-1,3-butadienes as Potential Chk1 Inhibitors. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363217120490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
6
|
Chen M, Zhou B, Zhong P, Rajamanickam V, Dai X, Karvannan K, Zhou H, Zhang X, Liang G. Increased Intracellular Reactive Oxygen Species Mediates the Anti-Cancer Effects of WZ35 via Activating Mitochondrial Apoptosis Pathway in Prostate Cancer Cells. Prostate 2017; 77:489-504. [PMID: 27990666 DOI: 10.1002/pros.23287] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/18/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND The limited treatment option for recurrent prostate cancer and eventual resistant to conventional chemotherapy drugs has fueled continued interest in finding new anti-neoplastic agents. WZ35, a chemical analog of curcumin, had been demonstrated to have high chemical stability and potential anticancer effects in gastric cancer cells. The present study aimed to investigate the anti-prostate cancer effects of WZ35 in vitro and in vivo as well as the underlying mechanism. METHODS Two prostate cancer cell lines RM-1 and DU145 were utilized to test the anti-cancer effects of WZ35 and the underlying mechanism. MTT assay was used to assess the cytotoxic effect of WZ35. Cell cycle distribution, apoptosis, alteration of ROS, and [Ca2+ ]i level were evaluated using flow cytometry. Western blotting assay was applied to measure the levels of proteins associated with apoptosis and cell cycle. Immunofluorescence staining and Electron micrographs were used to evaluate activation of mitochondrial apoptosis pathway. Tumor models in nude mice were induced by injection of RM-1 prostate cancer cells to test the in vivo anticancer action of WZ35. RESULTS Our results showed that WZ35 treatment induced loss of cell viability, cell apoptosis, and G2/M cycle arrest in both RM-1 and DU145 cells, coupled with ROS overproduction, intracellular calcium surge, and activation of mitochondrial apoptosis pathway in RM-1 cells. Interestingly, all above changes induced by WZ35 were completely reversed by ROS blockage. In addition, prevention of [Ca2+ ]i elevation by BAPTA/AM also inhibited activation of mitochondrial apoptosis pathway induced by WZ35. In vivo studies, WZ35 treatment significantly inhibited RM-1 homograft tumor growth along with increased ROS accumulation, mitochondrial disruption, and cell apoptosis in tumor tissues. CONCLUSIONS In conclusion, this work provides a novel anticancer candidate for the treatment of prostate cancer and demonstrated that increased ROS mediate the anti-cancer effects of WZ35 via activating mitochondrial apoptosis pathway. Importantly, this work also reveals that targeting ROS generation might be an effective strategy in human androgen-resistant prostate cancer treatment. Prostate 77:489-504, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Minxiao Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Bin Zhou
- The Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Peng Zhong
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
| | - Vinothkumar Rajamanickam
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
| | - Xuanxuan Dai
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Kanchana Karvannan
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
| | - Huiping Zhou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
| | - Xiuhua Zhang
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang, China
| |
Collapse
|
7
|
Saini V, Manral A, Arora R, Meena P, Gusain S, Saluja D, Tiwari M. Novel synthetic analogs of diallyl disulfide triggers cell cycle arrest and apoptosis via ROS generation in MIA PaCa-2 cells. Pharmacol Rep 2017; 69:813-821. [PMID: 28591670 DOI: 10.1016/j.pharep.2017.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 02/06/2017] [Accepted: 03/10/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Diallyl disulfide (DADS), a principal organosulfur component of garlic, is known for its medicinal properties including anti-cancer activity. Prior studies have demonstrated that the compounds containing Diallyl disulfide moieties exhibited diverse therapeutic potential with promising biological activities. In the present study, we have investigated the in vitro anticancer activity of Diallyl disulfide derivatives (5a-5l and 7e-7m) against human cancer cell lines. METHODS The effect of DADS analogs on different cancer cell lines was measured through MTT assay. Cell cycle progression, apoptosis, DNA fragmentation and levels of ROS were analyzed through FACS and confocal imaging. RESULTS Bis[3-(3-fluorophenyl)prop-2-ene]disulfide (compound 5b) was the most potent compound among the tested DADS derivatives. FACS analysis revealed that increase in ROS generation by compound 5b was accompanied by cell cycle arrest in the G2/M phase and apoptosis in MIA PaCa-2 cells. Further, the apoptosis was confirmed by TUNEL assay. Western blot analysis showed that compound 5b induces G2/M phase arrest via ROS mediated DNA-damage, which in turn, induces phosphorylation of Chk1/Cdc25c/Cdc2 pathway. Furthermore, altered levels of ROS triggers intrinsic apoptotic cascade, as evidenced by dissipated mitochondrial membrane potential (ψ), decrease in Bcl-2/Bax ratio, cytochrome c release and cleavage of procaspase-3. Scavenging of ROS by antioxidant N-acetyl-cysteine (NAC) reversed the compound 5b induced augmented intracellular ROS levels and cell death. CONCLUSION Taken together, the anti-proliferative effects of compound 5b were attributed to intracellular ROS accumulation, which in turn, triggers apoptosis by mediating DNA damage-induced G2/M phase arrest and evoking mitochondrial apoptotic pathway in MIA PaCa-2 cells.
Collapse
Affiliation(s)
- Vikas Saini
- Bio-Organic Chemistry Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Apra Manral
- Bio-Organic Chemistry Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Rashi Arora
- Medical Biotechnology Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Poonam Meena
- Bio-Organic Chemistry Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Siddharth Gusain
- Bio-Organic Chemistry Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Daman Saluja
- Medical Biotechnology Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India
| | - Manisha Tiwari
- Bio-Organic Chemistry Laboratory, Dr. B.R. Ambedkar Centre for Biomedical Research, University of Delhi, Delhi, India.
| |
Collapse
|
8
|
Su B, Su J, Zeng Y, Liu F, Xia H, Ma YH, Zhou ZG, Zhang S, Yang BM, Wu YH, Zeng X, Ai XH, Ling H, Jiang H, Su Q. Diallyl disulfide suppresses epithelial-mesenchymal transition, invasion and proliferation by downregulation of LIMK1 in gastric cancer. Oncotarget 2016; 7:10498-512. [PMID: 26871290 PMCID: PMC4891135 DOI: 10.18632/oncotarget.7252] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/24/2016] [Indexed: 11/25/2022] Open
Abstract
Diallyl disulfide (DADS) has been shown to have multi-targeted antitumor activities. We have previously discovered that it has a repressive effect on LIM kinase-1 (LIMK1) expression in gastric cancer MGC803 cells. This suggests that DADS may inhibit epithelial-mesenchymal transition (EMT) by downregulating LIMK1, resulting in the inhibition of invasion and growth in gastric cancer. In this study, we reveal that LIMK1 expression is correlated with tumor differentiation, invasion depth, clinical stage, lymph node metastasis, and poor prognosis. DADS downregulated the Rac1-Pak1/Rock1-LIMK1 pathway in MGC803 cells, as shown by decreased p-LIMK1 and p-cofilin1 levels, and suppressed cell migration and invasion. Knockdown and overexpression experiments performed in vitro demonstrated that downregulating LIMK1 with DADS resulted in restrained EMT that was coupled with decreased matrix metalloproteinase-9 (MMP-9) and increased tissue inhibitor of metalloproteinase-3 (TIMP-3) expression. In in vitro and in vivo experiments, the DADS-induced suppression of cell proliferation was enhanced and antagonized by the knockdown and overexpression of LIMK1, respectively. Similar results were observed for DADS-induced changes in the expression of vimentin, CD34, Ki-67, and E-cadherin in xenografted tumors. These results indicate that downregulation of LIMK1 by DADS could explain the inhibition of EMT, invasion and proliferation in gastric cancer cells.
Collapse
Affiliation(s)
- Bo Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory for Pharmacoproteomics of Hunan Provincial University, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, 421001 Hunan, China
| | - Jian Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China.,Department of Pathology, Second Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China
| | - Ying Zeng
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Fang Liu
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Hong Xia
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Yan-Hua Ma
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Zhi-Gang Zhou
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Shuo Zhang
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Bang-Min Yang
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - You-Hua Wu
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China
| | - Xi Zeng
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Xiao-Hong Ai
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China
| | - Hui Ling
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| | - Hao Jiang
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China
| | - Qi Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, 421001 Hunan, China.,Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, 421001 Hunan, China
| |
Collapse
|
9
|
Su B, Su J, He H, Wu Y, Xia H, Zeng X, Dai W, Ai X, Ling H, Jiang H, Su Q. Identification of potential targets for diallyl disulfide in human gastric cancer MGC-803 cells using proteomics approaches. Oncol Rep 2015; 33:2484-94. [PMID: 25812569 DOI: 10.3892/or.2015.3859] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/26/2015] [Indexed: 11/05/2022] Open
Abstract
Diallyl disulfide (DADS) is characterized as an effective agent for the prevention and therapy of cancer, however, mechanisms regarding its anticancer effects are not fully clarified. In the present study, we compared the protein expression profile of gastric cancer MGC-803 cells subjected to DADS treatment with that of untreated control cells to explore potential molecules regulated by DADS. Using proteomic approaches, we identified 23 proteins showing statistically significant differences in expression, including 9 upregulated and 14 downregulated proteins. RT-PCR and western blot analysis confirmed that retinoid-related orphan nuclear receptor α (RORα) and nM23 were increased by DADS, whereas LIM kinase-1 (LIMK1), urokinase-type plasminogen activator receptor (uPAR) and cyclin-dependent kinase-1 (CDK1) were decreased. DADS treatment and knockdown of uPAR caused suppression of ERK/Fra-1 pathway, downregulation of urokinase-type plasminogen activator (uPA), matrix metalloproteinase-9 (MMP-9) and vimentin, and upregulation of tissue inhibitor of metalloproteinase-3 (TIMP-3) and E-cadherin, concomitant with inhibition of cell migration and invasion. Moreover, knockdown of uPAR potentiated the effects of DADS on MGC-803 cells. These data demonstrate that downregulation of uPAR may partially be responsible for DADS-induced inhibition of ERK/Fra-1 pathway, as well as cell migration and invasion. Thus, the discovery of DADS-induced differential expression proteins is conducive to reveal unknown mechanisms of DADS anti-gastric cancer.
Collapse
Affiliation(s)
- Bo Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Jian Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Hui He
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Youhua Wu
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Hong Xia
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Xi Zeng
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Wenxiang Dai
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Xiaohong Ai
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Hui Ling
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Hao Jiang
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Qi Su
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, P.R. China
| |
Collapse
|
10
|
Ling H, Lu LF, He J, Xiao GH, Jiang H, Su Q. Diallyl disulfide selectively causes checkpoint kinase-1 mediated G2/M arrest in human MGC803 gastric cancer cell line. Oncol Rep 2014; 32:2274-82. [PMID: 25176258 DOI: 10.3892/or.2014.3417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 08/04/2014] [Indexed: 11/06/2022] Open
Abstract
Previous studies have shown that diallyl disulfide (DADS), a naturally occurring anticancer agent in garlic, arrested human gastric cancer cells (MGC803) in the G2/M phase of the cell cycle. Due to the importance of cell cycle redistribution in DADS-mediated anticarcinogenic effects, we investigated the role of checkpoint kinases (Chk1 and Chk2) during DADS-induced cell cycle arrest. In the present study, the northern blot analysis showed that mRNA expression of for Chkl and Chk2 was unchanged. Notably, DADS induced the accumulation of phosphorylated Chk1, but not of Chk2, activated phospho-ATR (ATM-RAD3-related gene), and dowregulated CDC25C and cyclin B1 expression. Furthermore, CDC25C was immunoprecipitated by anti-Chk1 but not anti-Chk2. Results of the overexpression and knockdown studies, showed that Chk1 but not Chk2 regulated the DADS-induced G2/M arrest of MGC803 cells. The overexpression of Chk1 resulted in significantly increased DADS-induced G2/M arrest, increased DADS-induced Chk1 phosphorylation and inhibited CDC25C expression. Knockdown of Chk1 reduced DADS‑induced G2/M arrest and blocked the DADS-induced inhibition of CDC25C and cyclin B1 expression. These results suggested that Chk1 is important in DADS‑induced cell cycle G2/M arrest in the human MGC803 gastric cancer cell line. Furthermore, the DADS-induced G2/M checkpoint response is mediated by Chk1 signaling through ATR/Chk1/CDC25C/cyclin B1.
Collapse
Affiliation(s)
- Hui Ling
- Key Laboratory of Tumor Cellular and Molecular Pathology (University of South China), College of Hunan Province, Cancer Research Institute, Hengyang, Hunan 421001, P.R. China
| | - Li-Feng Lu
- Key Laboratory of Tumor Cellular and Molecular Pathology (University of South China), College of Hunan Province, Cancer Research Institute, Hengyang, Hunan 421001, P.R. China
| | - Jie He
- Key Laboratory of Tumor Cellular and Molecular Pathology (University of South China), College of Hunan Province, Cancer Research Institute, Hengyang, Hunan 421001, P.R. China
| | - Guo-Hua Xiao
- Key Laboratory of Tumor Cellular and Molecular Pathology (University of South China), College of Hunan Province, Cancer Research Institute, Hengyang, Hunan 421001, P.R. China
| | - Hao Jiang
- Center for Gastric Cancer Research of Hunan Province, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Qi Su
- Key Laboratory of Tumor Cellular and Molecular Pathology (University of South China), College of Hunan Province, Cancer Research Institute, Hengyang, Hunan 421001, P.R. China
| |
Collapse
|
11
|
Yin X, Zhang R, Feng C, Zhang J, Liu D, Xu K, Wang X, Zhang S, Li Z, Liu X, Ma H. Diallyl disulfide induces G2/M arrest and promotes apoptosis through the p53/p21 and MEK-ERK pathways in human esophageal squamous cell carcinoma. Oncol Rep 2014; 32:1748-56. [PMID: 25175641 DOI: 10.3892/or.2014.3361] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 07/08/2014] [Indexed: 12/12/2022] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is an aggressive tumor with high incidence and mortality worldwide. Diallyl disulfide (DADS) is a natural organosulfur compound, isolated from garlic. In this study, MTT assay showed that DADS significantly reduced cell viability in a dose- and time-dependent manner in ESCC cells, with lower toxicity in normal liver cells. Cell cycle analysis revealed that DADS made G2/M phase arrest. Molecular analysis suggested that this cell cycle arrest was likely made by the decrease of cyclin B1, cdc2, p-cdc2, cdc25c in concomitance with activation of the p53/p21 pathway. Apoptosis was detected by Annexin V/PI staining. The molecule markers showed that DADS induced apoptosis through activating caspases, altering the Bax/Bcl-2 balance and suppressing the MEK-ERK pathway. Our data indicated that DADS has the potential to be an effective and safe anticancer agent for ESCC therapy in the near future.
Collapse
Affiliation(s)
- Xiaoran Yin
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Rong Zhang
- Department of Gastroenterology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Cheng Feng
- Department of Digestion, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jun Zhang
- Department of Digestion, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Dong Liu
- Department of Digestion, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Kun Xu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xijing Wang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Shuqun Zhang
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Zongfang Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xinlian Liu
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Hongbing Ma
- Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| |
Collapse
|
12
|
Bo S, Hui H, Li W, Hui L, Hong X, Lin D, Dai WX, Wu YH, Ai XH, Hao J, Qi S. Chk1, but not Chk2, is responsible for G2/M phase arrest induced by diallyl disulfide in human gastric cancer BGC823 cells. Food Chem Toxicol 2014; 68:61-70. [PMID: 24650757 DOI: 10.1016/j.fct.2014.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 02/19/2014] [Accepted: 03/04/2014] [Indexed: 12/27/2022]
Abstract
Diallyl disulfide (DADS) has been shown to cause G2/M phase cell cycle arrest in several human cancers. Here we demonstrate a mechanism by which DADS induces G2/M phase arrest in BGC823 human gastric cancer cells via Chk1. From cell cycle gene array results, we next confirmed that cyclin B1 expression was decreased by DADS, while the expression of p21, GADD45α and p53 were increased. Despite the lack of change in Chk1 gene expression in response to DADS according to the array analysis, intriguingly overexpression of Chk1, but not Chk2, exhibited increased accumulation in G2/M phase. Moreover, overexpression of Chk1 promoted the effect of DADS-induced G2/M arrest. Augmented phosphorylation of Chk1 by DADS was observed in Chk1-transfected cells, followed by downregulation of Cdc25C and cyclin B1 proteins. In contrast, phosphorylated Chk2 showed no obvious change in Chk2-transfected cells after DADS treatment. Furthermore, knockdown of Chk1 by siRNA partially abrogated DADS-induced downregulation of Cdc25C and cyclin B1 proteins and G2/M arrest. In contrast, knockdown of Chk2 did not show these effects. Therefore, these data indicate that DADS may specifically modulate Chk1 phosphorylation, and DADS-induced G2/M phase arrest in BGC823 cells could result in part from Chk1-mediated inhibition of the Cdc25C/cyclin B1 pathway.
Collapse
Affiliation(s)
- Su Bo
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China; Key Laboratory for Pharmacoproteomics of Hunan Provincial University, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, Hunan 421001, China
| | - He Hui
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Wang Li
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Ling Hui
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Xia Hong
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Dong Lin
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Wen-Xiang Dai
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - You-Hua Wu
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Xiao-Hong Ai
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China
| | - Jiang Hao
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China.
| | - Su Qi
- Center for Gastric Cancer Research of Hunan Province, First Affiliated Hospital, University of South China, Hengyang, Hunan 421001, China; Key Laboratory of Cancer Cellular and Molecular Pathology of Hunan Provincial University, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China.
| |
Collapse
|
13
|
Trio PZ, You S, He X, He J, Sakao K, Hou DX. Chemopreventive functions and molecular mechanisms of garlic organosulfur compounds. Food Funct 2014; 5:833-44. [DOI: 10.1039/c3fo60479a] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
14
|
González-Vallinas M, González-Castejón M, Rodríguez-Casado A, Ramírez de Molina A. Dietary phytochemicals in cancer prevention and therapy: a complementary approach with promising perspectives. Nutr Rev 2013; 71:585-99. [DOI: 10.1111/nure.12051] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
15
|
Molecular mechanisms for the anti-cancer effects of diallyl disulfide. Food Chem Toxicol 2013; 57:362-70. [DOI: 10.1016/j.fct.2013.04.001] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 03/31/2013] [Accepted: 04/01/2013] [Indexed: 12/30/2022]
|
16
|
Montenarh M, Saidu NEB. The Effect of Diallyl Polysulfanes on Cellular Signaling Cascades. Nat Prod Commun 2012. [DOI: 10.1177/1934578x1200700324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Diallyl polysulfanes, such as diallyl trisulfide and diallyl tetrasulfide, are regarded as a group of potential chemopreventive compounds as they have been proven to be effective inhibitors of cancer cells. These agents have been implicated in signal transductions, including the generation of Reactive Oxygen Species (ROS), Endoplasmic Reticulum (ER) stress, mitogen-activated protein kinase (MAPK) signaling, regulation of cell cycle progression, and induction of apoptosis. Nonetheless, certain aspects of the diallyl polysulfane triggered inhibitory effects on cancer cells are still not clear. Understanding the targeted signaling pathways may help to develop new strategies to treat cancer and other diseases. This review is therefore aimed at addressing the targeting of specific intracellular signal transduction cascades by these diallyl polysulfanes in order to shed some light on possible mechanisms of action of these compounds.
Collapse
Affiliation(s)
- Mathias Montenarh
- Medizinische Biochemie und Molekularbiologie und Kompetenzzentrum Molekulare Medizin (KOMM) Universität des Saarlandes, Gebäude 44, 66424 Homburg, Germany
| | - Nathaniel E. B. Saidu
- Medizinische Biochemie und Molekularbiologie und Kompetenzzentrum Molekulare Medizin (KOMM) Universität des Saarlandes, Gebäude 44, 66424 Homburg, Germany
| |
Collapse
|
17
|
Rajendran P, Ho E, Williams DE, Dashwood RH. Dietary phytochemicals, HDAC inhibition, and DNA damage/repair defects in cancer cells. Clin Epigenetics 2011; 3:4. [PMID: 22247744 PMCID: PMC3255482 DOI: 10.1186/1868-7083-3-4] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Accepted: 10/26/2011] [Indexed: 12/21/2022] Open
Abstract
Genomic instability is a common feature of cancer etiology. This provides an avenue for therapeutic intervention, since cancer cells are more susceptible than normal cells to DNA damaging agents. However, there is growing evidence that the epigenetic mechanisms that impact DNA methylation and histone status also contribute to genomic instability. The DNA damage response, for example, is modulated by the acetylation status of histone and non-histone proteins, and by the opposing activities of histone acetyltransferase and histone deacetylase (HDAC) enzymes. Many HDACs overexpressed in cancer cells have been implicated in protecting such cells from genotoxic insults. Thus, HDAC inhibitors, in addition to unsilencing tumor suppressor genes, also can silence DNA repair pathways, inactivate non-histone proteins that are required for DNA stability, and induce reactive oxygen species and DNA double-strand breaks. This review summarizes how dietary phytochemicals that affect the epigenome also can trigger DNA damage and repair mechanisms. Where such data is available, examples are cited from studies in vitro and in vivo of polyphenols, organosulfur/organoselenium compounds, indoles, sesquiterpene lactones, and miscellaneous agents such as anacardic acid. Finally, by virtue of their genetic and epigenetic mechanisms, cancer chemopreventive agents are being redefined as chemo- or radio-sensitizers. A sustained DNA damage response coupled with insufficient repair may be a pivotal mechanism for apoptosis induction in cancer cells exposed to dietary phytochemicals. Future research, including appropriate clinical investigation, should clarify these emerging concepts in the context of both genetic and epigenetic mechanisms dysregulated in cancer, and the pros and cons of specific dietary intervention strategies.
Collapse
Affiliation(s)
- Praveen Rajendran
- Cancer Chemoprotection Program, Linus Pauling Institute, 307 Linus Pauling Science Center, Oregon State University, Corvallis OR 97331, USA
| | | | | | | |
Collapse
|
18
|
C-terminal domain of Chk1 regulates its subcellular location and kinase activity for DNA repair. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11434-011-4538-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
19
|
Hahm SH, Park JH, Ko SI, Lee YR, Chung IS, Chung JH, Kang LW, Han YS. Knock-down of human MutY homolog (hMYH) decreases phosphorylation of checkpoint kinase 1 (Chk1) induced by hydroxyurea and UV treatment. BMB Rep 2011; 44:352-7. [PMID: 21615992 DOI: 10.5483/bmbrep.2011.44.5.352] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The effect of human MutY homolog (hMYH) on the activation of checkpoint proteins in response to hydroxyurea (HU) and ultraviolet (UV) treatment was investigated in hMYH-disrupted HEK293 cells. hMYH-disrupted cells decreased the phosphorylation of Chk1 upon HU or UV treatment and increased the phosphorylation of Cdk2 and the amount of Cdc25A, but not Cdc25C. In siMYH-transfected cells, the increased rate of phosphorylated Chk1 upon HU or UV treatment was lower than that in siGFP-transfected cells, meaning that hMYH was involved in the activation mechanism of Chk1 upon DNA damage. The phosphorylation of ataxia telangiectasia and Rad3- related protein (ATR) upon HU or UV treatment was decreased in hMYH-disrupted HEK293 and HaCaT cells. Co-immunoprecipitation experiments showed that hMYH was immunoprecipitated by anti-ATR. These results suggest that hMYH may interact with ATR and function as a mediator of Chk1 phosphorylation in response to DNA damage.
Collapse
Affiliation(s)
- Soo-Hyun Hahm
- Department of Advanced Technology Fusion, Konkuk University, Seoul, Korea
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Tsai CW, Liu KL, Lin CY, Chen HW, Lii CK. Structure and function relationship study of allium organosulfur compounds on upregulating the pi class of glutathione S-transferase expression. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:3398-3405. [PMID: 21381664 DOI: 10.1021/jf104254r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Allium organosulfides are potential chemopreventive compounds due to their effectiveness on the induction of phase II detoxification enzyme expression. In this study, we examined the structure and function relationship among various alk(en)yl sulfides on the expression of the pi class of glutathione S-transferase (GSTP) in rat Clone 9 cells, and what mechanism is involved. Cells were treated with 300 μM dipropyl sulfide (DPS), dipropyl disulfide (DPDS), propyl methyl sulfide (PMS), and propyl methyl disulfide (PMDS) for 48 h. DPDS and PMDS displayed more potency on GSTP protein and mRNA induction than that of DPS and PMS. Next, we compared the effectiveness of DPDS, PMDS, and diallyl disulfide (DADS), which have the same number of sulfur atoms but differ in the side alk(en)yl groups. The maximum increases on protein expression, mRNA level, and enzyme activity were noted in cells treated with DADS, followed by DPDS and PMDS. A reporter assay showed that three disulfides increased GSTP enhancer I (GPE I) activity (P < 0.05) in the order DADS > DPDS ≥ PMDS. Electromobility gel shift assays showed that the DNA binding of GPE I to nuclear proteins reached a maximum at 1 to 3 h after alk(en)yl disulfide treatment. Supershift assay revealed that c-jun bound to GPE I. Silencing of extracellular signal-regulated kinase (ERK) 2 expression inhibited c-jun activation and GSTP induction. Results suggest that both the type of alk(en)yl groups and number of sulfur atoms are determining factors of allium organosulfides on inducing GSTP expression, and it is likely related to the ERK-c-Jun-GPE I pathway.
Collapse
Affiliation(s)
- Chia-Wen Tsai
- Department of Nutrition, China Medical University, No. 91, Hsueh-Shih Road, Taichung 404, Taiwan
| | | | | | | | | |
Collapse
|