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Firdous F, Riaz S, Furqan M, Fozail S, Fatima K, Pohl SÖG, Doleschall NJ, Myant KB, Kahfi J, Emwas AH, Jaremko M, Chotana GA, Saleem RSZ, Faisal A. Design, Synthesis, and Biological Evaluation of SSE1806, a Microtubule Destabilizer That Overcomes Multidrug Resistance. ACS Med Chem Lett 2023; 14:1369-1377. [PMID: 37849542 PMCID: PMC10577696 DOI: 10.1021/acsmedchemlett.3c00258] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/06/2023] [Indexed: 10/19/2023] Open
Abstract
Microtubules are dynamic structures that form spindle fibers during cell division; pharmacological inhibition of microtubule dynamics arrests cells in mitosis, leading to apoptosis, and they have been extensively used to treat various cancers. However, the efficacy of such drugs is often limited by multidrug resistance. This study synthesized and evaluated 30 novel derivatives of podophyllotoxin, a natural antimitotic compound, for their antiproliferative activities. Compound SSE1806 exhibited the most potent antiproliferative activity with GI50 values ranging from 1.29 ± 0.01 to 21.15 ± 2.1 μM in cancer cell lines of different origins; it directly inhibited microtubule polymerization, causing aberrant mitosis and G2/M arrest. Prolonged treatment with SSE1806 increased p53 expression, induced cell death in monolayer cultures, and reduced the growth of mouse- and patient-derived human colon cancer organoids. Importantly, SSE1806 overcame multidrug resistance in a cell line overexpressing MDR-1. Thus, SSE1806 represents a potential anticancer agent that can overcome multidrug resistance.
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Affiliation(s)
- Farhat Firdous
- Department
of Chemistry and Chemical Engineering, Syed Babar Ali School of Science
and Engineering, Lahore University of Management
Sciences, Lahore 54792, Pakistan
- Department
of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Sharon Riaz
- Department
of Chemistry and Chemical Engineering, Syed Babar Ali School of Science
and Engineering, Lahore University of Management
Sciences, Lahore 54792, Pakistan
| | - Muhammad Furqan
- Department
of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Salman Fozail
- Department
of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Khushboo Fatima
- Department
of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Sebastian Öther-Gee Pohl
- Institute
of Genetics and Cancer, The University of
Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland
| | - Nora Julia Doleschall
- Institute
of Genetics and Cancer, The University of
Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland
| | - Kevin B. Myant
- Institute
of Genetics and Cancer, The University of
Edinburgh, Western General Hospital Campus, Crewe Road, Edinburgh EH4 2XU, Scotland
| | - Jordan Kahfi
- Division
of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Abdul-Hamid Emwas
- KAUST
Core Laboratories, King Abdullah University
of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mariusz Jaremko
- Division
of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Ghayoor Abbas Chotana
- Department
of Chemistry and Chemical Engineering, Syed Babar Ali School of Science
and Engineering, Lahore University of Management
Sciences, Lahore 54792, Pakistan
| | - Rahman Shah Zaib Saleem
- Department
of Chemistry and Chemical Engineering, Syed Babar Ali School of Science
and Engineering, Lahore University of Management
Sciences, Lahore 54792, Pakistan
| | - Amir Faisal
- Department
of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
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Kwon JH, Lee NG, Kang AR, Ahn IH, Choi IY, Song JY, Hwang SG, Um HD, Choi JR, Kim J, Park JK. JNC-1043, a Novel Podophyllotoxin Derivative, Exerts Anticancer Drug and Radiosensitizer Effects in Colorectal Cancer Cells. Molecules 2022; 27:molecules27207008. [PMID: 36296600 PMCID: PMC9607161 DOI: 10.3390/molecules27207008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to determine whether (5S)-5-(4-benzyloxy-3,5-dimethoxy-phenyl)-5,9-dihydro-8H-furo [3’,4’:6,7] naphtho [2,3-d] [1,3]dioxol-6-one (JNC-1043), which is a novel chemical derivative of β-apopicropodophyllin, acts as a novel potential anticancer reagent and radiosensitizer in colorectal cancer (CRC) cells. Firstly, we used MTT assays to assess whether JNC-1043 could inhibit the cell proliferation of HCT116 and DLD-1 cells. The IC50 values of these cell lines were calculated as 114.5 and 157 nM, respectively, at 72 h of treatment. Using doses approximating the IC50 values, we tested whether JNC-1043 had a radiosensitizing effect in the CRC cell lines. Clonogenic assays revealed that the dose-enhancement ratios (DER) of HCT116 and DLD-1 cells were 1.53 and 1.25, respectively. Cell-counting assays showed that the combination of JNC-1043 and γ-ionizing radiation (IR) enhanced cell death. Treatment with JNC-1043 or IR alone induced cell death by 50~60%, whereas the combination of JNC-1043 and IR increased this cell death by more than 20~30%. Annexin V-propidium iodide assays showed that the combination of JNC-1043 and IR increased apoptosis by more 30~40% compared to that induced by JNC-1043 or IR alone. DCFDA- and MitoSOX-based assays revealed that mitochondrial ROS production was enhanced by the combination of JNC-1043 and IR. Finally, we found that suppression of ROS by N-acetylcysteine (NAC) blocked the apoptotic cell death induced by the combination of JNC-1043 and IR. The xenograft model also indicated that the combination of JNC-1043 and IR increased apoptotic cell death in tumor mass. These results collectively suggest that JNC-1043 acts as a radiosensitizer and exerts anticancer effects against CRC cells by promoting apoptosis mediated by mitochondrial ROS.
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Affiliation(s)
- Jin-Hee Kwon
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
- Division of Life Sciences, Korea University, Seoul 02841, Korea
| | - Na-Gyeong Lee
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - A-Ram Kang
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - In-Ho Ahn
- J&C Sciences Co., Ltd., KAIST Moonji Campus F712, 193 Moonji-ro, Yusung-Gu, Daejeon 305-732, Korea
| | - In-Young Choi
- J&C Sciences Co., Ltd., KAIST Moonji Campus F712, 193 Moonji-ro, Yusung-Gu, Daejeon 305-732, Korea
| | - Jie-Young Song
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - Sang-Gu Hwang
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - Hong-Duck Um
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - Jong-Ryoo Choi
- J&C Sciences Co., Ltd., KAIST Moonji Campus F712, 193 Moonji-ro, Yusung-Gu, Daejeon 305-732, Korea
| | - Joon Kim
- Division of Life Sciences, Korea University, Seoul 02841, Korea
| | - Jong Kuk Park
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
- Correspondence: (J.K.P.); Tel.: +82-02-970-1321
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Shen S, Tong Y, Luo Y, Huang L, Gao W. Biosynthesis, total synthesis, and pharmacological activities of aryltetralin-type lignan podophyllotoxin and its derivatives. Nat Prod Rep 2022; 39:1856-1875. [PMID: 35913409 DOI: 10.1039/d2np00028h] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Covering: up to 2022Podophyllotoxin (PTOX, 1), a kind of aryltetralin-type lignan, was first discovered in the plant Podophyllum peltatum and its structure was clarified by W. Borsche and J. Niemann in 1932. Due to its potent anti-cancer and anti-viral activities, it is considered one of the molecules most likely to be developed into modern drugs. With the increasing market demand and insufficient storage of natural resources, it is crucial to expand the sources of PTOXs. The original extraction method from plants has gradually failed to meet the requirements, and the biosynthesis and total synthesis have become the forward-looking alternatives. As key enzymes in the biosynthetic pathway of PTOXs and their catalytic mechanisms being constantly revealed, it is possible to realize the heterogeneous biosynthesis of PTOXs in the future. Chemical and chemoenzymatic synthesis also provide schemes for strictly controlling the asymmetric configuration of the tetracyclic core. Currently, the pharmacological activities of some PTOX derivatives have been extensively studied, laying the foundation for clinical candidate drugs. This review focuses primarily on the latest research progress in the biosynthesis, total synthesis, and pharmacological activities of PTOX and its derivatives, providing a more comprehensive understanding of these widely used compounds and supporting the future search for clinical applications.
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Affiliation(s)
- Siyu Shen
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China. .,Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Yuru Tong
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, China
| | - Yunfeng Luo
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, Chinese Academy of Chinese Medical Sciences, Beijing 100700, China.
| | - Wei Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China. .,Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Zhao Y, Li D, Han Y, Wang H, Du R, Yan Z. The ester derivatives obtained by C‐ring modification of podophyllotoxin induced apoptosis and inhibited proliferation in Hemangioma Endothelial Cells via down‐regulation of PI3K/Akt signaling pathway. Chem Biol Drug Des 2022; 99:828-838. [PMID: 35184389 DOI: 10.1111/cbdd.14034] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 10/12/2021] [Accepted: 01/15/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Yan Zhao
- College of Chinese Medicinal Materials Jilin Agricultural University Changchun 130118 China
| | - Danyao Li
- College of Chinese Medicinal Materials Jilin Agricultural University Changchun 130118 China
| | - Yun Han
- Department of Pharmacy TCM Hospital Nanjing University of Chinese Medicine Suzhou 215009 China
| | - Haohao Wang
- College of Chinese Medicinal Materials Jilin Agricultural University Changchun 130118 China
| | - Rui Du
- College of Chinese Medicinal Materials Jilin Agricultural University Changchun 130118 China
| | - Zhaowei Yan
- Department of Pharmacy The First Affiliated Hospital of Soochow University Suzhou 215006 China
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Radiosensitizer Effect of β-Apopicropodophyllin against Colorectal Cancer via Induction of Reactive Oxygen Species and Apoptosis. Int J Mol Sci 2021; 22:ijms222413514. [PMID: 34948311 PMCID: PMC8708374 DOI: 10.3390/ijms222413514] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/10/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022] Open
Abstract
β-apopicropodophyllin (APP), a derivative of podophyllotoxin (PPT), has been identified as a potential anti-cancer drug. This study tested whether APP acts as an anti-cancer drug and can sensitize colorectal cancer (CRC) cells to radiation treatment. APP exerted an anti-cancer effect against the CRC cell lines HCT116, DLD-1, SW480, and COLO320DM, with IC50 values of 7.88 nM, 8.22 nM, 9.84 nM, and 7.757 nM, respectively, for the induction of DNA damage. Clonogenic and cell counting assays indicated that the combined treatment of APP and γ-ionizing radiation (IR) showed greater retardation of cell growth than either treatment alone, suggesting that APP sensitized CRC cells to IR. Annexin V–propidium iodide (PI) assays and immunoblot analysis showed that the combined treatment of APP and IR increased apoptosis in CRC cells compared with either APP or IR alone. Results obtained from the xenograft experiments also indicated that the combination of APP and IR enhanced apoptosis in the in vivo animal model. Apoptosis induction by the combined treatment of APP and IR resulted from reactive oxygen species (ROS). Inhibition of ROS by N-acetylcysteine (NAC) restored cell viability and decreased the induction of apoptosis by APP and IR in CRC cells. Taken together, these results indicate that a combined treatment of APP and IR might promote apoptosis by inducing ROS in CRC cells.
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Fan HY, Zhu ZL, Xian HC, Wang HF, Chen BJ, Tang YJ, Tang YL, Liang XH. Insight Into the Molecular Mechanism of Podophyllotoxin Derivatives as Anticancer Drugs. Front Cell Dev Biol 2021; 9:709075. [PMID: 34447752 PMCID: PMC8383743 DOI: 10.3389/fcell.2021.709075] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/22/2021] [Indexed: 02/05/2023] Open
Abstract
Podophyllotoxin (PTOX) is a biologically active compound derived from the podophyllum plant, and both it and its derivatives possess excellent antitumor activity. The PTOX derivatives etoposide (VP-16) and teniposide (VM-26) have been approved by the U.S. Food and Drug Administration (FDA) for cancer treatment, but are far from perfect. Hence, numerous PTOX derivatives have been developed to address the major limitations of PTOX, such as systemic toxicity, drug resistance, and low bioavailability. Regarding their anticancer mechanism, extensive studies have revealed that PTOX derivatives can induce cell cycle G2/M arrest and DNA/RNA breaks by targeting tubulin and topoisomerase II, respectively. However, few studies are dedicated to exploring the interactions between PTOX derivatives and downstream cancer-related signaling pathways, which is reasonably important for gaining insight into the role of PTOX. This review provides a comprehensive analysis of the role of PTOX derivatives in the biological behavior of tumors and potential molecular signaling pathways, aiming to help researchers design and develop better PTOX derivatives.
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Affiliation(s)
- Hua-yang Fan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Zhuo-li Zhu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Hong-chun Xian
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Hao-fan Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Bing-jun Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Ya-Jie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Ya-ling Tang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
| | - Xin-hua Liang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology (Sichuan University), Chengdu, China
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Zhao Y, Li D, Wei M, Du R, Yan Z. The ester derivatives obtained by C-ring modification of podophyllotoxin induce apoptosis and inhibited proliferation in PC-3M cells via down-regulation of PI3K/Akt signaling pathway. Bioorg Med Chem Lett 2021; 46:128174. [PMID: 34098082 DOI: 10.1016/j.bmcl.2021.128174] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/03/2021] [Accepted: 06/01/2021] [Indexed: 10/21/2022]
Abstract
Podophyllotoxin (PPT) has been reported to have many pharmacological activities, especially its anti-tumor effects. To improve the cytotoxicity and selective effect of PPT, in this study, we have designed and synthesized 20 ester derivatives by introducing Boc-amino acids or organic acids at the C-4 position of PPT. The cytotoxicity of these compounds was evaluated with PC-3M, HemECs, A549, MCF-7 and HepG2 cells. We observed that the proliferation of PC-3M cells was inhibited by all 20 ester derivatives in the largest degree, comparing to the other cell lines. Comparing to PPT (IC50 = 234.90 ± 20.7 nM), eight derivatives had better performance in inhabiting proliferation of PC-3M cells, six of them belong to Boc-amino acid ester derivatives, and the derivative named V-05 (IC50 = 1.28 ± 0.1 nM) had the strongest inhibitation effect. Changes in cell proliferation and apoptotic signaling pathways were studied by DAPI staining, colony formation assay, migration assay, flow cytometry and western blot analysis. We found that V-05 were able to inhibit PC-3M cells proliferation and migration, and induced apoptosis by downregualting p-PI3K, p-Akt and Bcl-2, and upregulating Cleaved caspase-3 and Bax. Our research provides the first insight for the application of PPT derivatives in PC-3M cells, which may offer information to the effective medicine development for human prostate cancer treatment.
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Affiliation(s)
- Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Danyao Li
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China
| | - Minggang Wei
- The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Rui Du
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Zhaowei Yan
- The First Affiliated Hospital of Soochow University, Suzhou 215006, China.
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Peng X, Tu Y, Fu S, Xia Y, Ma C, Yang Y, Wu H, Liu Y, You P. 14-Deoxycoleon U-induced endoplasmic reticulum stress-mediated apoptosis, autophagy, and cell cycle arrest in lung adenocarcinoma. Onco Targets Ther 2019; 12:5955-5965. [PMID: 31534345 PMCID: PMC6681072 DOI: 10.2147/ott.s211933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 06/13/2019] [Indexed: 11/23/2022] Open
Abstract
Objective 14-Deoxycoleon U is a natural abietane-type diterpene and exerts an inhibitory effect on tumor cells proliferation, which suggests that 14-Deoxycoleon U may be a potent anti-cancerous lead compound for lung cancer treatment. This study was to evaluate potential of 14-Deoxycoleon U to treat lung adenocarcinoma in vitro and in vivo. Methods In the present study, the cell viability and apoptosis morphology of 14-Deoxycoleon U-treated A549 and LLC cells were explored using cell counting kit-8 assay and Hoechst 33258 staining. Then, the protein expressions about apoptosis, endoplasmic reticulum (ER) stress, autophagy and cell cycle were measured using Western blot. The autophagosome formation of 14-Deoxycoleon U-treated A549 cells was visualized using a confocal microscopy. LLC lung adenocarcinoma model was established. Results The results indicated that 14-Deoxycoleon U significantly inhibited A549 and LLC cell proliferation in a dose-dependent manner via caspase-dependent apoptosis. Furthermore, apoptosis of both cells was mediated by 14-Deoxycoleon U-induced ER stress. In addition, 14-Deoxycoleon U-induced A549 and LLC cell autophagy, thus promoting their death. Moreover, 14-Deoxycoleon U-induced cell cycle arrest in both cells via inhibition of cyclin D3, cyclin-dependent kinase 6, CDC2 and up-regulation of p21. In vivo results showed that administration of 14-Deoxycoleon U significantly suppressed LLC growth and adverse effects of 14-Deoxycoleon U on organs might be lower than of adriamycin. Conclusion Overall, our results demonstrated that 14-Deoxycoleon U represses in vitro and in vivo growth of lung adenocarcinoma through ER stress-mediated apoptosis accompanied by autophagy and cell cycle arrest.
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Affiliation(s)
- Xiaozhi Peng
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Yijun Tu
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - San Fu
- State Key Laboratory of Natural Medicines, Research Department of Pharmacognosy, China Pharmaceutical University, Nanjing 211198, People's Republic of China
| | - Yu Xia
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Chaozhi Ma
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Yanfang Yang
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Hezhen Wu
- Department of Pharmacy, College of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Yanwen Liu
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
| | - Pengtao You
- Hubei Key Laboratory of Resources and Chemistry of Chinese Medicine, Department of Pharmacy, Hubei University of Chinese Medicine, Wuhan, Hubei, 430065, People's Republic of China
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Kim JY, Cho JH, Kim EM, Shin HJ, Hwang SG, Song JY, Um HD, Park JK. β-Apopicropodophyllin functions as a radiosensitizer targeting ER stress in non-small cell lung cancer. Biomed Pharmacother 2019; 113:108769. [PMID: 30870718 DOI: 10.1016/j.biopha.2019.108769] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/07/2019] [Accepted: 03/07/2019] [Indexed: 12/22/2022] Open
Abstract
AIMS In this study, we examined whether β-apopicropodophyllin (APP) could act as a radiosensitizer in non-small cell lung cancer (NSCLC) cells. MAIN METHODS The in vitro radiosensitizing activity of APP was demonstrated with clonogenic assay, immunoblotting, Annexin V-Propidium iodide (PI) assay, BrdU incorporation, detection of mitochondrial ROS/intracellular of H2O2, mitochondrial membrane potential detection, and performing of isolation of mitochondrial and cytosolic fractions. The in vivo radiosensitizing activity of APP was determined in xenografted mice with co-treatment of APP and IR based on measurement of tumor volumes and apoptotic cell death. KEY FINDINGS The results of a clonogenic assay indicated that a combination of APP and γ-ionizing radiation (IR) inhibits cell growth and increases cell death in NSCLC cells. Several signal transduction pathways were examined for their potential involvement in the apparent radiosensitization effect of APP, as assessed by immunoblotting analyses and mitochondrial potential determination in vitro. Treatment of NCI-H460 cells with 15 nM APP and NCI-H1299 cells with 10 nM APP yielded dose-enhancement ratios of 1.44 and 1.24, respectively. Enhanced ER stress, disrupted mitochondrial membrane potential, and increased reactive oxygen species (ROS) were observed in cells co-treated with APP and IR, and this was followed by the cytosolic release of cytochrome c and consequent activation of caspase-3 and -9. Notably, inhibition of JNK, which prevents caspase activation, blocked the APP/IR-induced activations of ER stress and apoptotic cell death. In NCI-H460 or NCI-H1299 cell-xenografted mice, APP/IR treatment delayed the time it took tumors to reach a threshold size by 22.38 and 16.83 days, respectively, compared with controls, to yield enhancement factors of 1.53 and 1.38, respectively. SIGNIFICANCE APP has a radiosensitizing function derived from its ability to induce apoptotic cell death via activation of ER stress, disruption of mitochondrial membrane potential, and induction of the caspase pathway.
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Affiliation(s)
- Ju Yeon Kim
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Jeong Hyun Cho
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Eun Mi Kim
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Hyun-Jin Shin
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Sang-Gu Hwang
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Jie-Young Song
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Hong-Duck Um
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Jong Kuk Park
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea.
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