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Chuang TC, Fang GS, Hsu SC, Lee YJ, Shao WS, Wang V, Lee SL, Kao MC, Ou CC. Baicalein suppresses HER2-mediated malignant transformation of HER2-overexpressing ovarian cancer cells by downregulating HER2 gene expression. ENVIRONMENTAL TOXICOLOGY 2023. [PMID: 36988316 DOI: 10.1002/tox.23790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/02/2022] [Accepted: 03/19/2023] [Indexed: 06/19/2023]
Abstract
The upregulation of the HER2 oncogene is associated with a variety of human cancers and is associated with poor prognosis. Baicalein is reported to have anti-tumor activity, but the molecular mechanism of this effect in HER2-positive cancer cells has not been studied. In this study, our data showed that baicalein can inhibit the proliferation and transformation potential of ovarian cancer cells overexpressing HER2. Baicalein treatment caused a dose-dependent inhibition of HER2 gene expression at the transcriptional level. Baicalein acted on ovarian cancer cells overexpressing HER2 to downregulate the PI3K/Akt signaling pathway downstream of HER2 and inhibit the expression or activity of downstream targets, such as VEGF and cyclin D1 and MMP2. Oral administration of baicalein supplemented with a pharmaceutical excipient significantly inhibited the growth of HER2-overexpressing ovarian SKOV-3 cancer xenografts in mice. These results suggest that downregulation of HER2 gene expression by baicalein at the transcriptional level contributes to inhibit the in vitro and in vivo proliferation and HER2-mediated malignant transformation of HER2-overexpressing ovarian cancer cells.
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Affiliation(s)
- Tzu-Chao Chuang
- Department of Chemistry, Tamkang University, New Taipei, Taiwan, R.O.C
| | - Guan-Shiun Fang
- Department of Chemistry, Tamkang University, New Taipei, Taiwan, R.O.C
| | - Shih-Chung Hsu
- Department of Early Childhood Care and Education, University of Kang Ning, Taipei, Taiwan, R.O.C
| | - Yi-Jen Lee
- Department of Biochemistry, National Defense Medical Center, Taipei, Taiwan, R.O.C
| | - Wei-Syun Shao
- Department of Chemistry, Tamkang University, New Taipei, Taiwan, R.O.C
| | - Vinchi Wang
- Department of Neurology, Cardinal Tien Hospital, New Taipei, Taiwan, R.O.C
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan, R.O.C
| | - Shou-Lun Lee
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Ming-Ching Kao
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C
| | - Chien-Chih Ou
- Department of Obstetrics and Gynecology, Tri-Service General Hospital, Taipei, Taiwan, R.O.C
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Magnolol Loaded on Carboxymethyl Chitosan Particles Improved the Antimicrobial Resistance and Storability of Kiwifruits. Foods 2023; 12:foods12061149. [PMID: 36981076 PMCID: PMC10048129 DOI: 10.3390/foods12061149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/01/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Magnolol is a natural compound extracted from the traditional Chinese medicine Magnolia officinalis, which exhibits antimicrobial properties. However, magnolol is insoluble in water and consists of a phenolic hydroxyl group, which is volatile; these factors hinder its application. In this study, a safe and environmentally friendly method to improve the microbial resistance and storability of harvested fruits is developed using the water-soluble carrier carboxymethyl chitosan (CMCS) and magnolol. Magnolol was loaded on CMCS particles to form Magnolol@CMCS antimicrobial particles, a preservation coating agent. Magnolol@CMCS particles effectively solved the problems of water insolubility and agglomeration of magnolol and reduced the size distribution D50 value of magnolol from 0.749 to 0.213 μm. Magnolol@CMCS particles showed greater toxicity against Staphylococcus aureus, Escherichia coli, and Botryosphaeria dothidea than that of magnolol alone, with effective medium concentration (EC50) values of 0.9408, 142.4144, and 8.8028 μg/mL, respectively. Kiwifruit treated with the Magnolol@CMCS solution showed delayed changes in fruit hardness and soluble solid and dry matter contents and significantly higher ascorbic acid (vitamin C) and soluble total sugar contents and sugar:acid ratios compared with that of the control fruit. In addition, no disease spots were observed on fruit treated with the Magnolol@CMCS solution within 7 days after inoculation with B. dothidea. In conclusion, Magnolol@CMCS particles showed antimicrobial activity on harvested fruits, effectively delayed the hardness and nutritional changes of fruits during storage, and improved the storability of kiwifruit.
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Kundu M, Das S, Das CK, Kulkarni G, Das S, Dhara D, Mandal M. Magnolol induces cytotoxic autophagy in glioma by inhibiting PI3K/AKT/mTOR signaling. Exp Cell Res 2023; 424:113488. [PMID: 36736226 DOI: 10.1016/j.yexcr.2023.113488] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/18/2022] [Accepted: 01/18/2023] [Indexed: 02/04/2023]
Abstract
Glioma is difficult-to-treat because of its infiltrative nature and the presence of the blood-brain barrier. Temozolomide is the only FDA-approved drug for its management. Therefore, finding a novel chemotherapeutic agent for glioma is of utmost importance. Magnolol, a neolignan, has been known for its apoptotic role in glioma. In this work, we have explored a novel anti-glioma mechanism of Magnolol associated with its role in autophagy modulation. We found increased expression levels of Beclin-1, Atg5-Atg12, and LC3-II and lower p62 expression in Magnolol-treated glioma cells. PI3K/AKT/mTOR pathway proteins were also downregulated in Magnolol-treated glioma cells. Next, we treated the glioma cells with Insulin, a stimulator of PI3K/AKT/mTOR signaling, to confirm that Magnolol induced autophagy by inhibiting this pathway. Insulin reversed the effect on Magnolol-mediated autophagy induction. We also established the same in in vivo glioma model where Magnolol showed an anti-glioma effect by inducing autophagy. To confirm the cytotoxic effect of Magnolol-induced autophagy, we used Chloroquine, a late-stage autophagy inhibitor. Chloroquine efficiently reversed the anti-glioma effects of Magnolol both in vitro and in vivo. Our study revealed the cytotoxic effect of Magnolol-induced autophagy in glioma, which was not previously reported. Additionally, Magnolol showed no toxicity in non-cancerous cell lines as well as rat organs. Thus, we concluded that Magnolol is an excellent candidate for developing new therapeutic strategies for glioma management.
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Affiliation(s)
- Moumita Kundu
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Subhayan Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Chandan Kanta Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Gaurav Kulkarni
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Soumen Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Dibakar Dhara
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India.
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4
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Wang X, Liu Q, Fu Y, Ding RB, Qi X, Zhou X, Sun Z, Bao J. Magnolol as a Potential Anticancer Agent: A Proposed Mechanistic Insight. Molecules 2022; 27:molecules27196441. [PMID: 36234977 PMCID: PMC9570903 DOI: 10.3390/molecules27196441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Cancer is a serious disease with high mortality and morbidity worldwide. Natural products have served as a major source for developing new anticancer drugs during recent decades. Magnolol, a representative natural phenolic lignan isolated from Magnolia officinali, has attracted considerable attention for its anticancer properties in recent years. Accumulating preclinical studies have demonstrated the tremendous therapeutic potential of magnolol via a wide range of pharmacological mechanisms against cancer. In this review, we summarized the latest advances in preclinical studies investigating anticancer properties of magnolol and described the important signaling pathways explaining its underlying mechanisms. Magnolol was capable of inhibiting cancer growth and metastasis against various cancer types. Magnolol exerted anticancer effects through inhibiting proliferation, inducing cell cycle arrest, provoking apoptosis, restraining migration and invasion, and suppressing angiogenesis. Multiple signaling pathways were also involved in the pharmacological actions of magnolol against cancer, such as PI3K/Akt/mTOR signaling, MAPK signaling and NF-κB signaling. Based on this existing evidence summarized in the review, we have conclusively confirmed magnolol had a multi-target anticancer effect against heterogeneous cancer disease. It is promising to develop magnolol as a drug candidate for cancer therapy in the future.
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Affiliation(s)
- Xiaofeng Wang
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou 570102, China
| | - Qingqing Liu
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Collaborative Innovation Center of One Health, Hainan University, Haikou 570228, China
| | - Yuanfeng Fu
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Collaborative Innovation Center of One Health, Hainan University, Haikou 570228, China
| | - Ren-Bo Ding
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Collaborative Innovation Center of One Health, Hainan University, Haikou 570228, China
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Xingzhu Qi
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Collaborative Innovation Center of One Health, Hainan University, Haikou 570228, China
| | - Xuejun Zhou
- Department of Otolaryngology-Head and Neck Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou 570102, China
| | - Zhihua Sun
- State International Joint Research Center for Animal Health Breeding, Key Laboratory of Control and Prevention of Animal Disease of Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi 832003, China
- Correspondence: (Z.S.); (J.B.)
| | - Jiaolin Bao
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Pharmaceutical Sciences, Collaborative Innovation Center of One Health, Hainan University, Haikou 570228, China
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
- Correspondence: (Z.S.); (J.B.)
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Kadkhoda J, Tarighatnia A, Tohidkia MR, Nader ND, Aghanejad A. Photothermal therapy-mediated autophagy in breast cancer treatment: Progress and trends. Life Sci 2022; 298:120499. [DOI: 10.1016/j.lfs.2022.120499] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/11/2022] [Accepted: 03/21/2022] [Indexed: 12/17/2022]
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Mad-Adam N, Rattanaburee T, Tanawattanasuntorn T, Graidist P. Effects of trans-(±)-kusunokinin on chemosensitive and chemoresistant ovarian cancer cells. Oncol Lett 2022; 23:59. [PMID: 34992691 PMCID: PMC8721857 DOI: 10.3892/ol.2021.13177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 12/10/2021] [Indexed: 11/19/2022] Open
Abstract
Ovarian cancer ranks eighth in cancer incidence and mortality among women worldwide. Cisplatin-based chemotherapy is commonly used for patients with ovarian cancer. However, the clinical efficacy of cisplatin is limited due to the occurrence of adverse side effects and development of cancer chemoresistance during treatment. Trans-(±)-kusunokinin has been previously reported to inhibit cell proliferation and induce cell apoptosis in various cancer cell types, including breast, colon and cholangiocarcinoma. However, the potential effects of (±)-kusunokinin on ovarian cancer remains unknown. In the present study, chemosensitive ovarian cancer cell line A2780 and chemoresistant ovarian cancer cell lines A2780cis, SKOV-3 and OVCAR-3 were treated with trans-(±)-kusunokinin to investigate its potential effects. MTT, colony formation, apoptosis and multi-caspase assays were used to determine cytotoxicity, the ability of single cells to form colonies, induction of apoptosis and multi-caspase activity, respectively. Moreover, western blot analysis was performed to determine the proteins level of topoisomerase II, cyclin D1, CDK1, Bax and p53-upregulated modulator of apoptosis (PUMA). The results demonstrated that trans-(±)-kusunokinin exhibited the strongest cytotoxicity against A2780cis cells with an IC50 value of 3.4 µM whilst also reducing the colony formation of A2780 and A2780cis cells. Trans-(±)-kusunokinin also induced the cells to undergo apoptosis and increased multi-caspase activity in A2780 and A2780cis cells. This compound significantly downregulated topoisomerase II, cyclin D1 and CDK1 expression, but upregulated Bax and PUMA expression in both A2780 and A2780cis cells. In conclusion, trans-(±)-kusunokinin suppressed ovarian cancer cells through the inhibition of colony formation, cell proliferation and the induction of apoptosis. This pure compound could be a potential targeted therapy for ovarian cancer treatment in the future. However, studies in an animal model and clinical trial need to be performed to support the efficacy and safety of this new treatment.
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Affiliation(s)
- Nadeeya Mad-Adam
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
| | - Thidarath Rattanaburee
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
| | - Tanotnon Tanawattanasuntorn
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
| | - Potchanapond Graidist
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
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Mottaghi S, Abbaszadeh H. Natural Lignans Honokiol and Magnolol as Potential Anticarcinogenic and Anticancer Agents. A Comprehensive Mechanistic Review. Nutr Cancer 2021; 74:761-778. [PMID: 34047218 DOI: 10.1080/01635581.2021.1931364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Plant lignans constitute an important group of polyphenols, which have been demonstrated to significantly induce cancer cell death and suppress cancer cell proliferation with minimal toxicity against non-transformed cells. Numerous epidemiological studies have shown that the intake of lignans is associated with lower risk of several cancers. These natural compounds have the potential to inhibit carcinogenesis, tumor growth, and metastasis by targeting various signaling molecules and pathways. Growing evidence indicates that honokiol and magnolol as natural lignans possess potent anticancer activities against various types of human cancer. The aim of present review is to provide the reader with the newest findings in understanding the cellular and molecular mechanisms mediating anticancer effects of honokiol and magnolol. This review comprehensively elucidates the effects of honokiol and magnolol on the molecular targets and signal transduction pathways implicated in cancer cell proliferation and metastasis. The findings of current review indicate that honokiol and magnolol can be considered as promising carcinopreventive and anticancer agents.
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Affiliation(s)
- Sayeh Mottaghi
- Department of Pediatrics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hassan Abbaszadeh
- Department of Pharmacology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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8
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Chuang TC, Wu K, Lin YY, Kuo HP, Kao MC, Wang V, Hsu SC, Lee SL. Dual down-regulation of EGFR and ErbB2 by berberine contributes to suppression of migration and invasion of human ovarian cancer cells. ENVIRONMENTAL TOXICOLOGY 2021; 36:737-747. [PMID: 33325633 DOI: 10.1002/tox.23076] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 11/27/2020] [Indexed: 06/12/2023]
Abstract
The overexpression of EGFR and/or ErbB2 occurs frequently in ovarian cancers and is associated with poor prognosis. The purpose of this study was to examine the anticancer effects and molecular mechanisms of berberine on human ovarian cancer cells with different levels of EGFR and/or ErbB2. We found that berberine reduced the motility and invasiveness of ovarian cancer cells. Berberine depleted both EGFR and ErbB2 in ovarian cancer cells. Furthermore, berberine suppressed the activation of the EGFR and ErbB2 downstream targets cyclin D1, MMPs, and VEGF by down-regulating the EGFR-ErbB2/PI3K/Akt signaling pathway. The berberine-mediated inhibition of MMP-2 and MMP-9 activity could be rescued by co-treatment with EGF. Finally, we demonstrated that berberine induced ErbB2 depletion through ubiquitin-mediated proteasome degradation. In conclusion, the suppressive effects of berberine on the ovarian cancer cells that differ in the expression of EGFR and ErbB2 may be mediated by the dual depletion of EGFR and/or ErbB2.
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Affiliation(s)
- Tzu-Chao Chuang
- Department of Chemistry, Tamkang University, New Taipei City, Taiwan
| | - Kuohui Wu
- Department of Chemistry, Tamkang University, New Taipei City, Taiwan
| | - Ying-Yu Lin
- Department of Chemistry, Tamkang University, New Taipei City, Taiwan
| | - Han-Peng Kuo
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Ming-Ching Kao
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Vinchi Wang
- Department of Neurology, Cardinal Tien Hospital, New Taipei City, Taiwan
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
| | - Shih-Chung Hsu
- Department of Early Childhood Care and Education, University of Kang Ning, Taipei, Taiwan
| | - Shou-Lun Lee
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
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9
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Lin Y, Li Y, Zeng Y, Tian B, Qu X, Yuan Q, Song Y. Pharmacology, Toxicity, Bioavailability, and Formulation of Magnolol: An Update. Front Pharmacol 2021; 12:632767. [PMID: 33815113 PMCID: PMC8010308 DOI: 10.3389/fphar.2021.632767] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/15/2021] [Indexed: 12/16/2022] Open
Abstract
Magnolol (MG) is one of the primary active components of Magnoliae officinalis cortex, which has been widely used in traditional Chinese and Japanese herbal medicine and possesses a wide range of pharmacological activities. In recent years, attention has been drawn to this component due to its potential as an anti-inflammatory and antitumor drug. To summarize the new biological and pharmacological data on MG, we screened the literature from January 2011 to October 2020. In this review, we provide an actualization of already known anti-inflammatory, cardiovascular protection, antiangiogenesis, antidiabetes, hypoglycemic, antioxidation, neuroprotection, gastrointestinal protection, and antibacterial activities of MG. Besides, results from studies on antitumor activity are presented. We also summarized the molecular mechanisms, toxicity, bioavailability, and formulations of MG. Therefore, we provide a valid cognition of MG.
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Affiliation(s)
- Yiping Lin
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuke Li
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuanlian Zeng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Bin Tian
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaolan Qu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Qianghua Yuan
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ying Song
- Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Sun B, Liu Y, He D, Li J, Wang J, Wen W, Hong M. Traditional Chinese medicines and their active ingredients sensitize cancer cells to TRAIL-induced apoptosis. J Zhejiang Univ Sci B 2021; 22:190-203. [PMID: 33719224 DOI: 10.1631/jzus.b2000497] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The rapidly developing resistance of cancers to chemotherapy agents and the severe cytotoxicity of such agents to normal cells are major stumbling blocks in current cancer treatments. Most current chemotherapy agents have significant cytotoxicity, which leads to devastating adverse effects and results in a substandard quality of life, including increased daily morbidity and premature mortality. The death receptor of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) can sidestep p53-dependent pathways to induce tumor cell apoptosis without damaging most normal cells. However, various cancer cells can develop resistance to TRAIL-induced apoptosis via different pathways. Therefore, it is critical to find an efficient TRAIL sensitizer to reverse the resistance of tumor cells to TRAIL, and to reinforce TRAIL's ability to induce tumor cell apoptosis. In recent years, traditional Chinese medicines and their active ingredients have shown great potential to trigger apoptotic cell death in TRAIL-resistant cancer cell lines. This review aims to collate information about Chinese medicines that can effectively reverse the resistance of tumor cells to TRAIL and enhance TRAIL's ability to induce apoptosis. We explore the therapeutic potential of TRAIL and provide new ideas for the development of TRAIL therapy and the generation of new anti-cancer drugs for human cancer treatment. This study involved an extensive review of studies obtained from literature searches of electronic databases such as Google Scholar and PubMed. "TRAIL sensitize" and "Chinese medicine" were the search keywords. We then isolated newly published studies on the mechanisms of TRAIL-induced apoptosis. The name of each plant was validated using certified databases such as The Plant List. This study indicates that TRAIL can be combined with different Chinese medicine components through intrinsic or extrinsic pathways to promote cancer cell apoptosis. It also demonstrates that the active ingredients of traditional Chinese medicines enhance the sensitivity of cancer cells to TRAIL-mediated apoptosis. This provides useful information regarding traditional Chinese medicine treatment, the development of TRAIL-based therapies, and the treatment of cancer.
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Affiliation(s)
- Bingyu Sun
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.,Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yongqiang Liu
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510006, China
| | - Danhua He
- Research Center of Chinese Herbal Resource Science and Engineering, Guangzhou University of Traditional Chinese Medicine, Guangzhou 510006, China
| | - Jinke Li
- Department of Pharmacology & Toxicology, University of Kansas, Lawrence, KS 66105, USA
| | - Jiawei Wang
- Zhongshan People's Hospital, Zhongshan 528400, China
| | - Wulin Wen
- ENT & HN Surgery Department, the Second Affiliated Hospital of Ningxia Medical University, Yinchuan 750000, China.
| | - Ming Hong
- Institute of Advanced Diagnostic and Clinical Medicine, Zhongshan People's Hospital, Guangzhou University & Zhongshan People's Hospital Joint Biomedical Institute, Zhongshan 528400, China. .,Dongguan & Guangzhou University of Chinese Medicine Cooperative Academy of Mathematical Engineering for Chinese Medicine, Dongguan 523000, China.
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Chen S, Shen J, Zhao J, Wang J, Shan T, Li J, Xu M, Chen X, Liu Y, Cao G. Magnolol Suppresses Pancreatic Cancer Development In Vivo and In Vitro via Negatively Regulating TGF-β/Smad Signaling. Front Oncol 2020; 10:597672. [PMID: 33344246 PMCID: PMC7738609 DOI: 10.3389/fonc.2020.597672] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022] Open
Abstract
Magnolol, a hydroxylated biphenyl extracted from Magnolia officinalis, has recently drawn attention due to its anticancer potential. The present study was aimed to explore the effects of Magnolol on restraining the proliferation, migration and invasion of pancreatic cancer in vivo and in vitro. Magnolol showed significant anti-growth effect in an orthotopic xenograft nude mouse model, and immunohistochemical staining of the xenografts revealed that Magnolol suppressed vimentin expression and facilitated E-cadherin expression. The cytoactive detection using CCK-8 assay showed Magnolol inhibited PANC-1 and AsPC-1 concentration-dependently. Scratch healing assay and the Transwell invasion assay proved the inhibiting effects of Magnolol on cellular migration and invasion at a non-cytotoxic concentration. Western blot and rt-PCR showed that Magnolol suppressed epithelial-mesenchymal-transition by increasing the expression level of E-cadherin and decreasing those of N-cadherin and vimentin. Magnolol suppressed the TGF-β/Smad pathway by negatively regulating phosphorylation of Smad2/3. Moreover, TGF-β1 impaired the antitumor effects of Magnolol in vivo. These results demonstrated that Magnolol can inhibit proliferation, migration and invasion in vivo and in vitro by suppressing the TGF-β signal pathway and EMT. Magnolol could be a hopeful therapeutic drug for pancreatic malignancy.
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Affiliation(s)
- Shuo Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Jiaqi Shen
- School of Life Science, Xiamen University, Xiamen, China
| | - Jing Zhao
- School of Science, Xi'an Jiaotong University, Xi'an, China
| | - Jiazhong Wang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Tao Shan
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Junhui Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Meng Xu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Xi Chen
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Yang Liu
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
| | - Gang Cao
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong University, Xi'an, China
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12
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Near IR responsive targeted integrated lipid polymer nanoconstruct for enhanced magnolol cytotoxicity in breast cancer. Sci Rep 2020; 10:8771. [PMID: 32472087 PMCID: PMC7260181 DOI: 10.1038/s41598-020-65521-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 04/29/2020] [Indexed: 11/12/2022] Open
Abstract
Advances in cancer nanotechnology aim at improving specificity and effectiveness for tumor treatment. Amalgamation of different treatment modalities is expected to provide better cancer combating. Herein, We developed a long circulating nanocarrier comprising trastuzumab (TZB) surface modified polylactic-co-glycolic acid (PLGA) nanoparticles (NPs) co-encapsulating magnolol (Mag) and gold nanoparticles (GNPs). A modified single step nanoprecipitation method was adopted ensuring particle coating with D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS) while co-encapsulating GNPs. TZB was then anchored on NPs surface using a carbodiimide chemistry. The cytotoxicity of the developed system was evaluated with and without photothermal irradiation. NPs cellular uptake was then followed using confocal microscopical imaging. A hybrid matrix composed of PLGA/TPGS and surface decorated with TZB with a conjugation efficiency of ˃65%, was confirmed via FTIR, 1HNMR. GNPs could only be included in the NPs, when placed in the organic phase as evidenced by the shifted GNPs surface plasmonic resonance and confirmed via imaging coupled with energy dispersive X-ray analysis. Optimized NPs (136.1 ± 1.3 nm, −8.2 ± 1 mV and Mag encapsulation efficiency of 81.4 ± 1.8%) were able to boost Mag cytotoxicity on breast cancer cells while providing a selective multifunctional therapy with an added photothermal effect.
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Szarszewska M, Markowska A, Jach R, Marszałek A, Filas V, Bednarek W, Olejek A, Tomczak P, Sajdak S, Nowak-Markwitz E, Jaszczyńska-Nowinka K, Stanisławiak-Rudowicz J, Gryboś A, Chudecka-Głaz A, Gryboś M, Adamska K, Ramlau R, Markowska J, Knapp P. Significance of BRCA1 expression in breast and ovarian cancer patients with brain metastasis - A multicentre study. Adv Med Sci 2019; 64:235-240. [PMID: 30822630 DOI: 10.1016/j.advms.2018.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/02/2018] [Accepted: 12/18/2018] [Indexed: 01/09/2023]
Abstract
PURPOSE Cerebral metastases develop in 10-30% of patients with breast cancer (BC) and in around 3.3 to 4% of patients with ovarian cancer (OC). The aim of the multicenter study is to investigate the correlation between the expression of estrogen alpha receptors (ERα), progesterone receptors (PR), human epidermal growth factor receptor 2 (HER2), stromal cell-derived factor 1 (SDF1) and its receptor C-X-C chemokine receptor type 4 (CXCR4), breast cancer metastasis suppressor 1 (BRMS1), astrocyte elevated gene 1 (AEG1), depending on the status of BRCA1 protein, in patients suffering from OC and BC with brain metastases. PATIENTS AND METHODS The analysis included 51 patients: 29 with BC and 22 with OC, in whom brain metastases were disclosed. RESULTS In most patients (65.5% of BC patients and 68.2% of patients with OC tumors) BRCA1 protein loss was found. No correlation was disclosed between the levels of ERα, PR receptors, HER2, SDF1, CXCR4, AEG1, BRMS1 and BRCA1 status, patient age, stage of disease advancement, grade of histological maturity of the cells, presence of metastases to lymph nodes. A statistically significant correlation was disclosed between the negative expression of PR receptors and a high expression of CXCR4 in patients with BC. High values of the AEG1 protein (linked to metastases) were detected alongside a high expression of BRMS1 (a suppressor of metastases). CONCLUSIONS Patients with BC and OC and brain metastases have a frequent loss of BRCA1 expression. The role of ERα, PR, HER2, SDF1, CXCR4, AEG1, BRMS1 in metastatic process needs further studies.
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Chen YH, Lu MH, Guo DS, Zhai YY, Miao D, Yue JY, Yuan CH, Zhao MM, An DR. Antifungal Effect of Magnolol and Honokiol from Magnolia officinalis on Alternaria alternata Causing Tobacco Brown Spot. Molecules 2019; 24:E2140. [PMID: 31174300 PMCID: PMC6600672 DOI: 10.3390/molecules24112140] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 11/30/2022] Open
Abstract
In this study, two phenol compounds, magnolol and honokiol, were extracted from Magnolia officinalis and identified by LC-MS, 1H- and 13C-NMR. The magnolol and honokiol were shown to be effective against seven pathogenic fungi, including Alternaria alternata (Fr.) Keissl, Penicillium expansum (Link) Thom, Alternaria dauci f.sp. solani, Fusarium moniliforme J. Sheld, Fusarium oxysporum Schltdl., Valsa mali Miyabe & G. Yamada, and Rhizoctonia solani J.G. Kühn, with growth inhibition of more than 57%. We also investigated the mechanisms underlying the potential antifungal activity of magnolol and honokiol. The results showed that they inhibited the growth of A. alternata in a dose-dependent manner. Moreover, magnolol and honokiol treatment resulted in distorted mycelia and increased the cell membrane permeability of A. alternata, as determined by conductivity measurements. These results suggest that magnolol and honokiol are potential antifungal agents for application against plant fungal diseases.
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Affiliation(s)
- Ya-Han Chen
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
- College of agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China.
| | - Mei-Huan Lu
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
- Microbial Resources of Research Center, Microbiology Institute of Shaanxi, Xian 710043, China.
| | - Dong-Sheng Guo
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
| | - Ying-Yan Zhai
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
| | - Dan Miao
- College of agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China.
| | - Jian-Ying Yue
- College of agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China.
| | - Chen-Hong Yuan
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
| | - Ming-Min Zhao
- College of agriculture, Inner Mongolia Agricultural University, Huhhot 010018, China.
| | - De-Rong An
- College of Plant Protection and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, China.
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Magnolol: A Neolignan from the Magnolia Family for the Prevention and Treatment of Cancer. Int J Mol Sci 2018; 19:ijms19082362. [PMID: 30103472 PMCID: PMC6121321 DOI: 10.3390/ijms19082362] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 08/06/2018] [Accepted: 08/08/2018] [Indexed: 12/15/2022] Open
Abstract
The past few decades have witnessed widespread research to challenge carcinogenesis; however, it remains one of the most important health concerns with the worst prognosis and diagnosis. Increasing lines of evidence clearly show that the rate of cancer incidence will increase in future and will create global havoc, designating it as an epidemic. Conventional chemotherapeutics and treatment with synthetic disciplines are often associated with adverse side effects and development of chemoresistance. Thus, discovering novel economic and patient friendly drugs that are safe and efficacious is warranted. Several natural compounds have proved their potential against this dreadful disease so far. Magnolol is a hydroxylated biphenyl isolated from the root and stem bark of Magnolia tree. Magnolol can efficiently prevent or inhibit the growth of various cancers originating from different organs such as brain, breast, cervical, colon, liver, lung, prostate, skin, etc. Considering these perspectives, the current review primarily focuses on the fascinating role of magnolol against various types of cancers, and the source and chemistry of magnolol and the molecular mechanism underlying the targets of magnolol are discussed. This review proposes magnolol as a suitable candidate that can be appropriately designed and established into a potent anti-cancer drug.
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16
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Li M, Hu S, Chen X, Wang R, Bai X. Research on major antitumor active components in Zi-Cao-Cheng-Qi decoction based on hollow fiber cell fishing with high performance liquid chromatography. J Pharm Biomed Anal 2018; 149:9-15. [DOI: 10.1016/j.jpba.2017.10.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/20/2017] [Accepted: 10/22/2017] [Indexed: 02/07/2023]
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17
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Li MM, Hu S, Chen X, Bai XH. Development of a novel hollow-fiber liquid-phase microextraction based on oil-in-salt and its comparison with conventional one. J Sep Sci 2017; 40:2941-2949. [DOI: 10.1002/jssc.201700481] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 05/20/2017] [Accepted: 05/22/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Miao-miao Li
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Shuang Hu
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Xuan Chen
- School of Pharmacy; Shanxi Medical University; Taiyuan China
| | - Xiao-hong Bai
- School of Pharmacy; Shanxi Medical University; Taiyuan China
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Novel histone deacetylase inhibitors derived from Magnolia officinalis significantly enhance TRAIL-induced apoptosis in non-small cell lung cancer. Pharmacol Res 2016; 111:113-125. [DOI: 10.1016/j.phrs.2016.05.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 12/30/2022]
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19
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Qiu N, Shen B, Li X, Zhang X, Sang Z, Yang T, An L, Liu J, Chen L, Wang L. Inclusion complex of magnolol with hydroxypropyl-β-cyclodextrin: characterization, solubility, stability and cell viability. J INCL PHENOM MACRO 2016. [DOI: 10.1007/s10847-016-0628-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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20
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Li M, Zhang F, Wang X, Wu X, Zhang B, Zhang N, Wu W, Wang Z, Weng H, Liu S, Gao G, Mu J, Shu Y, Bao R, Cao Y, Lu J, Gu J, Zhu J, Liu Y. Magnolol inhibits growth of gallbladder cancer cells through the p53 pathway. Cancer Sci 2015; 106:1341-50. [PMID: 26250568 PMCID: PMC4638010 DOI: 10.1111/cas.12762] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 07/29/2015] [Accepted: 08/02/2015] [Indexed: 12/24/2022] Open
Abstract
Magnolol, the major active compound found in Magnolia officinalis has a wide range of clinical applications due to its anti-inflammation and anti-oxidation effects. This study investigated the effects of magnolol on the growth of human gallbladder carcinoma (GBC) cell lines. The results indicated that magnolol could significantly inhibit the growth of GBC cell lines in a dose- and time-dependent manner. Magnolol also blocked cell cycle progression at G0 /G1 phase and induced mitochondrial-related apoptosis by upregulating p53 and p21 protein levels and by downregulating cyclin D1, CDC25A, and Cdk2 protein levels. When cells were pretreated with a p53 inhibitor (pifithrin-a), followed by magnolol treatment, pifithrin-a blocked magnolol-induced apoptosis and G0 /G1 arrest. In vivo, magnolol suppressed tumor growth and activated the same mechanisms as were activated in vitro. In conclusion, our study is the first to report that magnolol has an inhibitory effect on the growth of GBC cells and that this compound may have potential as a novel therapeutic agent for the treatment of GBC.
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Affiliation(s)
- Maolan Li
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Fei Zhang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Xu’an Wang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Xiangsong Wu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Bingtai Zhang
- Department of General Surgery, Shanxi Medical University Second HospitalTaiyuan, China
| | - Ning Zhang
- Department of General Surgery, Shanxi Medical University Second HospitalTaiyuan, China
| | - Wenguang Wu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Zheng Wang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Hao Weng
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Shibo Liu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Guofeng Gao
- Department of General Surgery, Shanxi Medical University Second HospitalTaiyuan, China
| | - Jiasheng Mu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Yijun Shu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Runfa Bao
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Yang Cao
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Jianhua Lu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Jun Gu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Jian Zhu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
| | - Yingbin Liu
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Laboratory of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong, University School of MedicineShanghai, China
- Institute of Biliary Tract Disease, Shanghai Jiao Tong University School of MedicineShanghai, China
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Shi C, Zhang GB, Yin SW. Effect of bortezomib on migration and invasion in cervical carcinoma HeLa cell. ASIAN PAC J TROP MED 2015. [DOI: 10.1016/j.apjtm.2015.05.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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22
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Sun LM, Liao K, Liang S, Yu PH, Wang DY. Synergistic activity of magnolol with azoles and its possible antifungal mechanism against Candida albicans. J Appl Microbiol 2015; 118:826-38. [DOI: 10.1111/jam.12737] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 12/09/2014] [Accepted: 12/22/2014] [Indexed: 11/30/2022]
Affiliation(s)
- L.-M. Sun
- Department of Pharmacology; Medical School of Southeast University; Nanjing China
| | - K. Liao
- Department of Pathology and Pathophysiology; Medical School; Southeast University; Nanjing China
| | - S. Liang
- Department of Pharmacology; Medical School of Southeast University; Nanjing China
| | - P.-H. Yu
- Department of Pharmacology; Medical School of Southeast University; Nanjing China
| | - D.-Y. Wang
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education; Medical School of Southeast University; Nanjing China
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23
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McKeown BT, McDougall L, Catalli A, Hurta RAR. Magnolol causes alterations in the cell cycle in androgen insensitive human prostate cancer cells in vitro by affecting expression of key cell cycle regulatory proteins. Nutr Cancer 2014; 66:1154-64. [PMID: 25264561 DOI: 10.1080/01635581.2014.951736] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Prostate cancer, one of the most common cancers in the Western world, affects many men worldwide. This study investigated the effects of magnolol, a compound found in the roots and bark of the magnolia tree Magnolia officinalis, on the behavior of 2 androgen insensitive human prostate cancer cell lines, DU145 and PC3, in vitro. Magnolol, in a 24-h exposure at 40 and 80 μM, was found to be cytotoxic to cells. Magnolol also affected cell cycle progression of DU145 and PC3 cells, resulting in alterations to the cell cycle and subsequently decreasing the proportion of cells entering the G2/M-phase of the cell cycle. Magnolol inhibited the expression of cell cycle regulatory proteins including cyclins A, B1, D1, and E, as well as CDK2 and CDK4. Protein expression levels of pRBp107 decreased and pRBp130 protein expression levels increased in response to magnolol exposure, whereas p16(INK4a), p21, and p27 protein expression levels were apparently unchanged post 24-h exposure. Magnolol exposure at 6 h did increase p27 protein expression levels. This study has demonstrated that magnolol can alter the behavior of androgen insensitive human prostate cancer cells in vitro and suggests that magnolol may have potential as a novel anti-prostate cancer agent.
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Affiliation(s)
- Brendan T McKeown
- a Department of Biology , University of Prince Edward Island , Charlottetown , Prince Edward Island , Canada
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24
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Teng Y, Ross JL, Cowell JK. The involvement of JAK-STAT3 in cell motility, invasion, and metastasis. JAKSTAT 2014; 3:e28086. [PMID: 24778926 PMCID: PMC3995737 DOI: 10.4161/jkst.28086] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/30/2014] [Accepted: 02/03/2014] [Indexed: 12/18/2022] Open
Abstract
JAK-STAT3 signaling, while regulating many aspects of cancer development and progression, promotes invasion and metastasis through activation of key metastasis promoting genes such as WASF3. STAT3 promotes WASF3 expression and JAK2 independently activates it, which is required for invasion. JAK-STAT3 signaling is dependent on WASF3 function, since its inactivation in cells expressing JAK-STAT3 suppresses invasion. WASF3 overexpression leads to activation of NFκB and ZEB1 which also promote invasion through regulation of target genes involved in metastasis. NFκB frequently cooperates with STAT3 to upregulate metastasis promoting genes such as matrix metalloproteinases and cytokines, as well as to suppress microRNAs which can suppresses invasion. This better understanding of the complex role played by JAK-STAT3 in the regulation of cell movement, invasion, and metastasis provides opportunities to suppress this lethal aspect of cancer progression by not only targeting the JAK and STAT3 proteins directly, but also some of the downstream effectors of JAK-STAT3 signaling.
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Affiliation(s)
- Yong Teng
- Georgia Regents University Cancer Center; Augusta, GA USA
| | - James L Ross
- Georgia Regents University Cancer Center; Augusta, GA USA
| | - John K Cowell
- Georgia Regents University Cancer Center; Augusta, GA USA
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Yang HL, Lin KY, Juan YC, Kumar KJS, Way TD, Shen PC, Chen SC, Hseu YC. The anti-cancer activity of Antrodia camphorata against human ovarian carcinoma (SKOV-3) cells via modulation of HER-2/neu signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:254-265. [PMID: 23619020 DOI: 10.1016/j.jep.2013.04.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/09/2013] [Accepted: 04/08/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Antrodia camphorata (AC) is well known in Taiwan as a traditional Chinese medicinal fungus. However, the anticancer activity of AC against human HER-2/neu-overexpressing ovarian cancers is poorly understood. MATERIALS AND METHODS The aim of this study is to investigate whether a submerged fermentation culture of AC can inhibit human ovarian carcinoma cell (SKOV-3) proliferation by suppressing the HER-2/neu signaling pathway. Cell viability, colony formation, DCFH-DA fluorescence microscopy, western blotting, HER-2/neu immunofluorescence imaging, flow cytometry, and TUNEL assays were carried out to determine the anti-cancer effects of AC. RESULTS MTT and colony formation assays showed that AC induced a dose-dependent reduction in SKOV-3 cell growth. Immunoblot analysis demonstrated that HER-2/neu activity and tyrosine phosphorylation were significantly inhibited by AC. Furthermore, AC treatment significantly inhibited the activation of PI3K/Akt and their downstream effector β-catenin. We also observed that AC caused G2/M arrest mediated by down-regulation of cyclin D1, cyclin A, cyclin B1, and Cdk1 and increased p27 expression. Notably, AC induced apoptosis, which was associated with DNA fragmentation, cytochrome c release, caspase-9/-3 activation, PARP degradation, and Bcl-2/Bax dysregulation. An increase in intracellular reactive oxygen species (ROS) was observed in AC-treated cells, whereas the antioxidant N-acetylcysteine (NAC) prevented AC-induced cell death, HER-2/neu depletion, PI3K/Akt inactivation, and Bcl-2/Bax dysregulation, indicating that AC-induced cell death was mediated by ROS generation. CONCLUSIONS These results suggest that AC may exert anti-tumor activity against human ovarian carcinoma by suppressing HER-2/neu signaling pathways.
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Affiliation(s)
- Hsin-Ling Yang
- Institute of Nutrition, China Medical University, Taichung, Taiwan
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Kim GD, Oh J, Park HJ, Bae K, Lee SK. Magnolol inhibits angiogenesis by regulating ROS-mediated apoptosis and the PI3K/AKT/mTOR signaling pathway in mES/EB-derived endothelial-like cells. Int J Oncol 2013; 43:600-10. [PMID: 23708970 DOI: 10.3892/ijo.2013.1959] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 05/02/2013] [Indexed: 11/05/2022] Open
Abstract
Magnolol, a neolignan from the traditional medicinal plant Magnolia obovata, has been shown to possess neuroprotective, anti-inflammatory, anticancer and anti-angiogenic activities. However, the precise mechanism of the anti-angiogenic activity of magnolol remains to be elucidated. In the present study, the anti-angiogenic effect of magnolol was evaluated in mouse embryonic stem (mES)/embryoid body (EB)-derived endothelial-like cells. The endothelial-like cells were obtained by differentiation from mES/EB cells. Magnolol (20 µM) significantly suppressed the transcriptional and translational expression of platelet endothelial cell adhesion molecule (PECAM), an endothelial biomarker, in mES/EB-derived endothelial-like cells. To further understand the molecular mechanism of the suppression of PECAM expression, signaling pathways were analyzed in the mES/EB-derived endothelial-like cells. Magnolol induced the generation of reactive oxygen species (ROS) by mitochondria, a process that was associated with the induction of apoptosis as determined by positive Annexin V staining and the activation of cleaved caspase-3. The involvement of ROS generation by magnolol was confirmed by treatment with an antioxidant, N-acetyl-cysteine (NAC). NAC inhibited the magnolol-mediated induction of ROS generation and suppression of PECAM expression. In addition, magnolol suppressed the activation of MAPKs (ERK, JNK and p38) and the PI3K/AKT/mTOR signaling pathway in mES/EB-derived endothelial-like cells. Taken together, these findings demonstrate for the first time that the anti-angiogenic activity of magnolol may be associated with ROS-mediated apoptosis and the suppression of the PI3K/AKT/mTOR signaling pathway in mES/EB-derived endothelial-like cells.
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Affiliation(s)
- Gi Dae Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Gwanak-gu, Seoul 151-742, Republic of Korea
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Kumar S, Kumar A, Pathania AS, Guru SK, Jada S, Sharma PR, Bhushan S, Saxena AK, Kumar HMS, Malik F. Tiron and trolox potentiate the autophagic cell death induced by magnolol analog Ery5 by activation of Bax in HL-60 cells. Apoptosis 2013; 18:605-17. [PMID: 23494480 DOI: 10.1007/s10495-013-0805-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study describes the mechanism of trolox and tiron induced potentiation of cytotoxicity caused by Ery5, an analog of magnolol, in human myeloid leukemia HL-60 cells. Ery5 induced cytotoxicity in HL-60 cells by involving activation of bax and cleavage of caspase 3, which contributed towards activation of both apoptotic and autophagic pathways. Trolox and tiron, even at non-toxic concentrations, contributed to the cytotoxicity of Ery5 by activation of autophagic proteins like ATG7, ATG12 and LC3-II. Z-VAD-fmk mediated reduction in the cytotoxicity and expression of autophagic proteins, further suggested that autophagy induced by Ery5 is largely dependent upon caspases. Interestingly, Ery5 induced autophagy was accompanied by the downregulation of PI3K/AKT pathway whereas, trolox and tiron strongly enhanced this effect. In addition to that treatment of cells with Ery5, trolox and tiron individually, displayed a marked upregulation of Bax. The involvement of Bax in trolox and tiron induced enhancement of the cytotoxicity of Ery5 was confirmed, when siRNA induced silencing of Bax led to increased viability of the cells and exerted a strong inhibitory effect on LC3-II accumulation and p62 degradation in case of cells treated by the combination of Ery5 with trolox or tiron. Additionally, an important role of PARP in Ery5 mediated cell death has been suggested by PARP silencing experiments, however, potentiation of autophagic cytotoxicity by trolox and tiron did not seem to be dependent on PARP-1. Therefore, Bax seems to play a vital role in trolox and tiron mediated potentiation of autophagic cell death by Ery5 in HL-60 cells.
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Affiliation(s)
- Suresh Kumar
- Department of Cancer Pharmacology, Indian Institute of Integrative Medicine CSIR, Canal Road, Jammu 180001, India
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Ganoderma tsugae Extract Inhibits Growth of HER2-Overexpressing Cancer Cells via Modulation of HER2/PI3K/Akt Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:219472. [PMID: 23662119 PMCID: PMC3638576 DOI: 10.1155/2013/219472] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/25/2013] [Indexed: 01/01/2023]
Abstract
Ganoderma, also known as Lingzhi or Reishi, has been used for medicinal purposes in Asian countries for centuries. It is a medicinal fungus with a variety of biological properties including immunomodulatory and antitumor activities. In this study, we investigated the molecular mechanisms by which Ganoderma tsugae (GT), one of the most common species of Ganoderma, inhibits the proliferation of HER2-overexpressing cancer cells. Here, we show that a quality assured extract of GT (GTE) inhibited the growth of HER2-overexpressing cancer cells in vitro and in vivo and enhanced the growth-inhibitory effect of antitumor drugs (e.g., taxol and cisplatin) in these cells. We also demonstrate that GTE induced cell cycle arrest by interfering with the HER2/PI3K/Akt signaling pathway. Furthermore, GTE curtailed the expression of the HER2 protein by modulating the transcriptional activity of the HER2 gene and the stability/degradation of the HER2 protein. In conclusion, this study suggests that GTE may be a useful adjuvant therapeutic agent in the treatment of cancer cells that highly express HER2.
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Chen MC, Lee CF, Huang WH, Chou TC. Magnolol suppresses hypoxia-induced angiogenesis via inhibition of HIF-1α/VEGF signaling pathway in human bladder cancer cells. Biochem Pharmacol 2013; 85:1278-87. [PMID: 23416116 DOI: 10.1016/j.bcp.2013.02.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 02/06/2013] [Accepted: 02/07/2013] [Indexed: 10/27/2022]
Abstract
The hypoxic environment in tumors is an important factor causing tumor angiogenesis by activating the key transcription factor, hypoxia-inducible factors-1α (HIF-1α). Magnolol isolated from Magnolia officinalis has been reported to exhibit an anticancer activity via elevation of apoptosis. However, whether magnolol inhibits tumor angiogenesis remains unknown. In the present study, we demonstrated that magnolol significantly inhibited angiogenesis in vitro and in vivo evidenced by the attenuation of hypoxia and vascular endothelial growth factor (VEGF)-induced tube formation of human umbilical vascular endothelial cells, vasculature generation in chicken chorioallantoic membrane and Matrigel plug. In hypoxic human bladder cancer cells (T24), treatment with magnolol inhibited hypoxia-stimulated H2O2 formation, HIF-1α induction including mRNA, protein expression, and transcriptional activity as well as VEGF secretion. Additionally, the enhanced degradation of HIF-1α protein via enhancing prolyl hydroxylase activity and the decreased newly-synthesized HIF-1α protein in hypoxic T24 cells may involve the reduction of HIF-1α protein accumulation by magnolol. Interestingly, magnolol also acts as a VEGFR2 antagonist, and subsequently attenuates the down-stream AKT/mTOR/p70S6K/4E-BP-1 kinase activation both in hypoxic T24 cells and tumor tissues. As expected, administration of magnolol greatly attenuated tumor growth, angiogenesis and the protein expression of HIF-1α, VEGF, CD31, a marker of endothelial cells, and carbonic anhydrase IX, an endogenous marker for hypoxia, in the T24 xenograft mouse model. Collectively, these findings strongly indicate that the anti-agngiogenic activity of magnolol is, at least in part, mediated by suppressing HIF-1α/VEGF-dependent pathways, and suggest that magnolol may be a potential drug for human bladder cancer therapy.
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Affiliation(s)
- Meng-Chuan Chen
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
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Teng Y, Mei Y, Hawthorn L, Cowell JK. WASF3 regulates miR-200 inactivation by ZEB1 through suppression of KISS1 leading to increased invasiveness in breast cancer cells. Oncogene 2013; 33:203-11. [PMID: 23318438 PMCID: PMC3998093 DOI: 10.1038/onc.2012.565] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 10/16/2012] [Accepted: 10/16/2012] [Indexed: 12/25/2022]
Abstract
The WASF3 gene promotes invasion and metastasis in breast cancer cells which have undergone epithelial-to-mesenchyme transition (EMT). Overexpression of WASF3 in cells that do not show EMT increases their invasion potential as a result of increased ZEB1/2 levels which specifically suppress the anti-invasion chromosome 1 miR-200a/ 200b/429 cluster. ZEB1/2 upregulation by WASF3 results from downregulation of KISS1, leading to release of inhibition of NFκB by IκBα. We further show that ZEB1 expression is regulated by the NFκB transcription factor. Knockdown of WASF3 in breast cancer cells leads to reduced ZEB1 levels and increased miR-200 and E-cadherin levels, resulting in loss of invasion potential. The central regulation of this interactive pathway by WASF3 accounts for the increased invasion associated with increased WASF3 expression seen in aggressive breast cancer cells. WASF3, therefore, is a potential target to suppress invasion and metastasis in breast cancer cells.
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Affiliation(s)
- Y Teng
- Georgia Health Sciences University, Cancer Center, Augusta, GA, USA
| | - Y Mei
- Georgia Health Sciences University, Cancer Center, Augusta, GA, USA
| | - L Hawthorn
- Georgia Health Sciences University, Cancer Center, Augusta, GA, USA
| | - J K Cowell
- Georgia Health Sciences University, Cancer Center, Augusta, GA, USA
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Lu YM, Rong ML, Shang C, Wang N, Li X, Zhao YY, Zhang SL. Suppression of HER-2 via siRNA interference promotes apoptosis and decreases metastatic potential of SKOV‑3 human ovarian carcinoma cells. Oncol Rep 2012; 29:1133-9. [PMID: 23292493 DOI: 10.3892/or.2012.2214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 12/03/2012] [Indexed: 11/05/2022] Open
Abstract
The aberrant expression of human epidermal growth factor receptor-2 (HER-2) has been detected in ovarian cancer. However, the role of HER-2 in the development of ovarian cancer has not been sufficiently elucidated. The objective of this study was to determine the role of HER-2 in the apoptosis and metastasis of SKOV-3 ovarian cancer cells. SKOV-3 cells were transfected with three double‑stranded small interfering RNA (siRNA) molecules that target HER-2. Various sequences were synthesized by T7 transcription in vitro to select the most effective HER-2‑silencing siRNA. SKOV-3 cells were examined for growth inhibition using the MTT proliferation assay and apoptosis was assessed using flow cytometry and TUNEL assay. The Matrigel basement memebrane matrix was used to assess invasion and chemotactic mobility, as a model of tumor cell metastasis. Western blot analysis was used to detect the expression of matrix metallopeptidase-9 (MMP-9), E-cadherin, N-cadherin and vimentin. siRNA interference in HER-2 resulted in decreased cell proliferation and invasion and increased apoptosis. Western blot analysis demonstrated a marked increase in E-cadherin and MMP-9 and a reduction in N-cadherin and vimentin protein levels in the SKOV-3 cells. The suppression of HER-2 expression resulted in apoptosis and the inhibition of metastasis of SKOV-3 cells. Therefore, the overexpression of the HER-2 gene can enhance the metastatic potential of SKOV-3 cells by increasing the protein levels of MMP-9. Epithelial-mesenchymal transition may be involved in the HER-2 siRNA-induced invasion and migration of SKOV-3 cells. Taken together, these results suggest that HER-2 functions as an oncogene and may thus be an attractive therapeutic target in SKOV-3 ovarian cancer cells.
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Affiliation(s)
- Yan-Ming Lu
- Department of Gynaecology and Obstetrics, The Affiliated Shengjing Hospital, China Medical University, Shenyang, PR China
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Cheng Z. Comparative studies on the interactions of honokiol and magnolol with human serum albumin. J Pharm Biomed Anal 2012; 66:240-51. [DOI: 10.1016/j.jpba.2012.03.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 03/06/2012] [Accepted: 03/07/2012] [Indexed: 11/25/2022]
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Liu Z, Yuan Q, Zhang X, Xiong C, Xue P, Ruan J. RY10-4, a novel anti-tumor compound, exhibited its anti-angiogenesis activity by down-regulation of the HIF-1α and inhibition phosphorylation of AKT and mTOR. Cancer Chemother Pharmacol 2012; 69:1633-40. [DOI: 10.1007/s00280-012-1873-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2012] [Accepted: 04/22/2012] [Indexed: 12/17/2022]
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Human breast cancer cell metastasis is attenuated by lysyl oxidase inhibitors through down-regulation of focal adhesion kinase and the paxillin-signaling pathway. Breast Cancer Res Treat 2012; 134:989-1004. [PMID: 22434522 DOI: 10.1007/s10549-012-1986-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Accepted: 02/03/2012] [Indexed: 12/18/2022]
Abstract
The extracellular matrix (ECM) plays a critical role in the development and invasion of primary breast tumors. Lysyl oxidase (LOX), which is an ECM remodeling enzyme, appears to play roles in promoting cancer cell motility and invasion. To ascertain whether LOX overexpression in breast tumor tissues from Asian patients is associated with decreases in metastasis-free and overall survival in breast cancer patients, the mRNA levels of LOX were examined in paired tumor/normal tissue samples using real-time RT-PCR analysis (n = 246 pair-matched samples). To test whether specifically targeting LOX by inhibiting its activity (using beta-aminopropionitrile (β-APN), a LOX inhibitor), mRNA expression (using siRNA), or protein expression (using 25 μM magnolol) attenuates the invasion of MDA-MB-231 breast cancer cells, a cancer cell migration assay was performed. Interestingly, only 78.5% (n = 193) of the breast cancer tumors displayed detectable LOX expression. Nearly 60% (n = 120) of the cases fell into Group 1 (tumor > normal, T > N); in this group, the mean LOX expression in the tumor cells was 20.2-fold greater than in normal cells. However, in Group 2 (normal > tumor, N > T), the LOX expression level in most of the normal tissues examined (80%, 59/73) was less than fivefold greater than in the tumor tissues. The increased level of active LOX in the invasive breast cancer cell line MDA-MB-231 was accompanied by the increased phosphorylation of focal adhesion kinase at Tyr-576 and of paxillin at Tyr-118. We also found that the addition of β-APN (300 μM) and magnolol (25 μM), synergistically inhibited the migration and invasion of MDA-MB-231 cells. In this article, we describe, for the first time, higher expression of a LOX protein in breast tumors compared with normal tissues from Asian patients. Moreover, the results indicate that the inhibition of LOX using magnolol may represent a more desirable strategy for breast cancer therapy than the use of β-APN.
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