1
|
Yang CZ, Wang SH, Zhang RH, Lin JH, Tian YH, Yang YQ, Liu J, Ma YX. Neuroprotective effect of astragalin via activating PI3K/Akt-mTOR-mediated autophagy on APP/PS1 mice. Cell Death Dis 2023; 9:15. [PMID: 36681681 PMCID: PMC9867706 DOI: 10.1038/s41420-023-01324-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 01/07/2023] [Accepted: 01/11/2023] [Indexed: 01/22/2023]
Abstract
As a small molecule flavonoid, astragalin (AST) has anti-inflammatory, anti-cancer, and anti-oxidation effects. However, the impact and molecular mechanism of AST in Alzheimer's disease (AD) are still not clear. This study aims to investigate the neuroprotective effect and mechanism of AST on APP/PS1 mice and Aβ25-35-injured HT22 cells. In this study, we found that AST ameliorated cognitive dysfunction, reduced hippocampal neuronal damage and loss, and Aβ pathology in APP/PS1 mice. Subsequently, AST activated autophagy and up-regulated the levels of autophagic flux-related protein in APP/PS1 mice and Aβ25-35-induced injury in HT22 cells. Interestingly, AST down-regulated the phosphorylation level of PI3K/Akt-mTOR pathway-related proteins, which was reversed by autophagy inhibitors 3-Methyladenine (3-MA) or Bafilomycin A1 (Baf A1). At the same time, consistent with the impacts of Akt inhibitor MK2206 and mTOR inhibitor rapamycin, inhibited levels of autophagy in Aβ25-35-injured HT22 cells were activated by the administration of AST. Taken together, these results suggested that AST played key neuroprotective roles on AD via stimulating PI3K/Akt-mTOR pathway-mediated autophagy and autophagic flux. This study revealed a new mechanism of autophagy regulation behind the neuroprotection impact of AST for AD treatment.
Collapse
Affiliation(s)
- Cui-Zhu Yang
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Shu-Han Wang
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Run-Heng Zhang
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jia-Hong Lin
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ying-Hong Tian
- grid.284723.80000 0000 8877 7471Experiment Teaching & Administration Center, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Ya-Qi Yang
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jing Liu
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yu-Xin Ma
- grid.411847.f0000 0004 1804 4300Department of Anatomy, School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou, China ,grid.411847.f0000 0004 1804 4300Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| |
Collapse
|
2
|
Bhattacharjee R, Dey T, Kumar L, Kar S, Sarkar R, Ghorai M, Malik S, Jha NK, Vellingiri B, Kesari KK, Pérez de la Lastra JM, Dey A. Cellular landscaping of cisplatin resistance in cervical cancer. Biomed Pharmacother 2022; 153:113345. [PMID: 35810692 DOI: 10.1016/j.biopha.2022.113345] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 12/11/2022] Open
Abstract
Cervical cancer (CC) caused by human papillomavirus (HPV) is one of the largest causes of malignancies in women worldwide. Cisplatin is one of the widely used drugs for the treatment of CC is rendered ineffective owing to drug resistance. This review highlights the cause of resistance and the mechanism of cisplatin resistance cells in CC to develop therapeutic ventures and strategies that could be utilized to overcome the aforementioned issue. These strategies would include the application of nanocarries, miRNA, CRIPSR/Cas system, and chemotherapeutics in synergy with cisplatin to not only overcome the issues of drug resistance but also enhance its anti-cancer efficiency. Moreover, we have also discussed the signaling network of cisplatin resistance cells in CC that would provide insights to develop therapeutic target sites and inhibitors. Furthermore, we have discussed the role of CC metabolism on cisplatin resistance cells and the physical and biological factors affecting the tumor microenvironments.
Collapse
Affiliation(s)
- Rahul Bhattacharjee
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Tanima Dey
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Lamha Kumar
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, Kerala, India
| | - Sulagna Kar
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Ritayan Sarkar
- KIIT School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT-DU), Bhubaneswar 751024, Odisha, India
| | - Mimosa Ghorai
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India
| | - Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand 834001, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Greater Noida, Uttar Pradesh 201310, India; Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun 248007, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali 140413, India.
| | - Balachandar Vellingiri
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641-046, India
| | - Kavindra Kumar Kesari
- Department of Applied Physics, School of Science, Aalto University, Espoo 00076, Finland; Department of Bio-products and Bio-systems, School of Chemical Engineering, Aalto University, Espoo 00076, Finland
| | - José M Pérez de la Lastra
- Biotechnology of Macromolecules, Instituto de Productos Naturales y Agrobiología, IPNA (CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna (Santa Cruz de Tenerife), Spain.
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata 700073, West Bengal, India.
| |
Collapse
|
3
|
Jermnak U, Supsavhad W, Kunakornsawat S, Jaroensong T, Watcharasit P, Visitnonthachai D, Pairor S, Phaochoosak N. Anti-cancer potentials of Gynura procumbens leaves extract against two canine mammary cancer cell lines. Vet Med Sci 2022; 8:69-84. [PMID: 34882994 PMCID: PMC8788980 DOI: 10.1002/vms3.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND The anti-cancer effects of Gynura procumbens leaves extract (GPE) have been reported in various human cancers. However, the anti-cancer effects and molecular mechanisms of this extract on canine mammary cancer (CMC) have not yet been elucidated. OBJECTIVES The main goal of this study was to investigate the anti-cancer properties of GPE against two CMC cell lines (CHMp-13a and CHMp-5b). METHODS The GP leaves were extracted with 80% ethanol. Anti-cancer potentials of GPE on CHMp-13a and CHMp-5b cancer cell lines using dimethyl-2-thiazolyl-2,5-diphenyl-2H-tetrazolium bromide (MTT), wound healing, transwell migration, and caspase 3/7 activity assays were evaluated. The mRNA expression levels of two oncogenes: epidermal growth factor receptor (EGFR) and twist family bHLH transcription factor 1 (TWIST) and one tumour suppressor gene: phosphatase and tensin homolog (PTEN) in these cell lines were determined by quantitative real-time PCR (qRT-PCR). In addition, The EGFR and PTEN protein levels as well as protein kinase B (AKT) and extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation levels expression were also evaluated by western blot analysis. RESULTS The results showed that GPE caused a significant concentration- and time-dependent reduction in cell proliferation of both CHMp-13a and CHMp-5b cells, detected by MTT assays. This extract also significantly suppressed cancer cell migration in both cell lines, tested by wound healing and transwell migration assays. Additionally, the increase in caspase 3/7 activity observed in both CMC cell treated with GPE suggests that GPE induced caspase 3/7 dependent apoptosis. Moreover, GPE significantly decreased EGFR mRNA and protein expression levels compared to control in both cell lines in a dose-dependent manner. CONCLUSION These findings emphasized that GPE has an in vitro anti-cancer activity against CMC by inhibiting EGFR signalling pathway. Thus, GPE may serve as an alternative therapy in CMC with high EGFR expression.
Collapse
Affiliation(s)
- Usuma Jermnak
- Department of PharmacologyFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| | - Wachiraphan Supsavhad
- Department of PathologyFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| | - Sunee Kunakornsawat
- Department of Companion Animal Clinical SciencesFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| | - Tassanee Jaroensong
- Department of Companion Animal Clinical SciencesFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| | | | | | - Selapoom Pairor
- Department of Companion Animal Clinical SciencesFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| | - Napasorn Phaochoosak
- Department of PharmacologyFaculty of Veterinary MedicineKasetsart UniversityBangkokThailand
| |
Collapse
|
4
|
Dong W, Chen D, Chen Z, Sun H, Xu Z. Antioxidant capacity differences between the major flavonoids in cherry (Prunus pseudocerasus) in vitro and in vivo models. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.110938] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
5
|
Tsai WC, Chang HC, Yin HY, Huang MC, Agrawal DC, Wen HW. The protective ability and cellular mechanism of Koelreuteria henryi Dummer flower extract against hydrogen peroxide-induced cellular oxidative damage. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2020.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
6
|
Riaz A, Rasul A, Hussain G, Zahoor MK, Jabeen F, Subhani Z, Younis T, Ali M, Sarfraz I, Selamoglu Z. Astragalin: A Bioactive Phytochemical with Potential Therapeutic Activities. Adv Pharmacol Sci 2018; 2018:9794625. [PMID: 29853868 PMCID: PMC5954929 DOI: 10.1155/2018/9794625] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/05/2018] [Accepted: 04/12/2018] [Indexed: 12/26/2022] Open
Abstract
Natural products, an infinite treasure of bioactive chemical entities, persist as an inexhaustible resource for discovery of drugs. This review article intends to emphasize on one of the naturally occurring flavonoids, astragalin (kaempferol 3-glucoside), which is a bioactive constituent of various traditional medicinal plants such as Cuscuta chinensis. This multifaceted compound is well known for its diversified pharmacological applications such as anti-inflammatory, antioxidant, neuroprotective, cardioprotective, antiobesity, antiosteoporotic, anticancer, antiulcer, and antidiabetic properties. It carries out the aforementioned activities by the regulation and modulation of various molecular targets such as transcription factors (NF-κB, TNF-α, and TGF-β1), enzymes (iNOS, COX-2, PGE2, MMP-1, MMP-3, MIP-1α, COX-2, PGE-2, HK2, AChe, SOD, DRP-1, DDH, PLCγ1, and GPX), kinases (JNK, MAPK, Akt, ERK, SAPK, IκBα, PI3K, and PKCβ2), cell adhesion proteins (E-cadherin, vimentin PAR-2, and NCam), apoptotic and antiapoptotic proteins (Beclin-1, Bcl-2, Bax, Bcl-xL, cytochrome c, LC3A/B, caspase-3, caspase-9, procaspase-3, procaspase-8, and IgE), and inflammatory cytokines (SOCS-3, SOCS-5, IL-1β, IL-4, IL-6, IL-8, IL-13, MCP-1, CXCL-1, CXCL-2, and IFN-γ). Although researchers have reported multiple pharmacological applications of astragalin in various diseased conditions, further experimental investigations are still mandatory to fully understand its mechanism of action. It is contemplated that astragalin could be subjected to structural optimization to ameliorate its chemical accessibility, to optimize its absorption profiles, and to synthesize its more effective analogues which will ultimately lead towards potent drug candidates.
Collapse
Affiliation(s)
- Ammara Riaz
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Azhar Rasul
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Ghulam Hussain
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Kashif Zahoor
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Farhat Jabeen
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Zinayyera Subhani
- Department of Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Tahira Younis
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Muhammad Ali
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Iqra Sarfraz
- Department of Zoology, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan
| | - Zeliha Selamoglu
- Department of Medical Biology, Faculty of Medicine, Nigde Ömer Halisdemir University, Nigde 51240, Turkey
| |
Collapse
|
7
|
Chen CC, Chiou SH, Yang CL, Chow KC, Lin TY, Chang HW, You WC, Huang HW, Chen CM, Chen NC, Chou FP, Chou MC. Secreted gelsolin desensitizes and induces apoptosis of infiltrated lymphocytes in prostate cancer. Oncotarget 2017; 8:77152-77167. [PMID: 29100377 PMCID: PMC5652770 DOI: 10.18632/oncotarget.20414] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 06/12/2017] [Indexed: 12/16/2022] Open
Abstract
Loss of immunosurveillance is a major cause of cancer progression. Here, we demonstrate that gelsolin, a constituent of ejaculate, induces apoptosis of activated lymphocytes in prostate cancer. Gelsolin was highly expressed in prostate cancer cells, and was associated with tumor progression, recurrence, metastasis, and poor prognosis. In vitro, secreted gelsolin inactivated CD4+ T cells by binding to CD37, and induced apoptosis of activated CD8+ T lymphocytes by binding to Fas ligand during cell contact dependent on major histocompatibility complex I. Moreover, secreted gelsolin bound to sortilin, which in turn bound to Wiskott-Aldrich syndrome protein family member 3, thereby enhancing the endocytosis and intracellular transport of essential lipids needed to facilitate tumor growth and expansion. Under normal conditions, gelsolin is a seemingly harmless protein that prevents immune responses in female recipients. In disease states, however, this protein can inhibit immunosurveillance and promote cancer progression.
Collapse
Affiliation(s)
- Chun-Chi Chen
- Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan.,Section of Urology, Departments of Surgery, Changhua Christian Hospital, Chang-Hua, Taiwan
| | - Shiow-Her Chiou
- Graduate Institute of Microbiology and Public Health, National Chung Hsing University, Taichung, Taiwan
| | - Cheng-Lin Yang
- Graduate Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Kuan-Chih Chow
- Graduate Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Tze-Yi Lin
- Department of Pathology, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Hui-Wen Chang
- Department of Pathology, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Weir-Chiang You
- Department of Radiation Oncology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Hisu-Wen Huang
- Endemic Species Research Institute, Council of Agriculture, Executive Yuan, Chi-Chi, Taiwan
| | - Chien-Min Chen
- Endemic Species Research Institute, Council of Agriculture, Executive Yuan, Chi-Chi, Taiwan
| | - Nien-Cheng Chen
- Institute of Biochemistry, Microbiology and Immunology, Chung-Shan Medical University, Taichung, Taiwan
| | - Fen-Pi Chou
- Institute of Biochemistry, Microbiology and Immunology, Chung-Shan Medical University, Taichung, Taiwan
| | - Ming-Chih Chou
- Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan.,Department of Family and Community Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan
| |
Collapse
|
8
|
Zhong L, Zheng J, Sun Q, Wei K, Hu Y. Radix Tetrastigma hemsleyani flavone inhibits proliferation, migration, and invasion of human lung carcinoma A549 cells. Onco Targets Ther 2016; 9:635-41. [PMID: 26893573 PMCID: PMC4745953 DOI: 10.2147/ott.s92707] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Radix Tetrastigma hemsleyani flavone (RTHF) is widely used as a traditional herb and has detoxification and anti-inflammatory effects. In this study, we investigated the potential effects of RTHF on the growth and metastasis of human lung adenocarcinoma A549 cells and evaluated its mechanisms. A549 cells were treated with RTHF at various concentrations for different periods. In vitro Cell Counting Kit-8 assay and colony formation methods showed that RTHF had dose- and time-dependent antiproliferation effects on A549 cells. A cell adhesion assay showed that RTHF decreased A549 cell adhesion in a dose-dependent manner. Cell invasion and migration were investigated using the Transwell assay and observed using an inverted microscope; the results showed that cell metastasis was significantly lower in the treatment group than that in the control group (P<0.01). Expression of metastasis-related matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) was detected by real-time polymerase chain reaction and Western blotting. The results showed that the expression of MMP-2, MMP-9, and TIMP-1 decreased, while that of TIMP-2 increased significantly in the RTHF group when compared with the results of the control group. These results show that RTHF exhibits antigrowth and antimetastasis activity in lung cancer A549 cells by decreasing the expression of MMP-2/-9 and TIMP-1 and increasing that of TIMP-2.
Collapse
Affiliation(s)
- Liangrui Zhong
- Department of Oncology, Tongde Hospital of Zhejiang Province, Affiliated to Zhejiang Chinese Medical University, People's Republic of China
| | - Junxian Zheng
- Department of Chinese Medicine, Zhejiang Academy of Traditional Chinese Medicine, People's Republic of China
| | - Qianqian Sun
- Department of Chinese Medicine, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
| | - Kemin Wei
- Department of Chinese Medicine, Zhejiang Academy of Traditional Chinese Medicine, People's Republic of China
| | - Yijuan Hu
- Department of Chinese Medicine, Zhejiang Academy of Traditional Chinese Medicine, People's Republic of China
| |
Collapse
|
9
|
Wu CC, Huang KF, Yang TY, Li YL, Wen CL, Hsu SL, Chen TH. The Topoisomerase 1 Inhibitor Austrobailignan-1 Isolated from Koelreuteria henryi Induces a G2/M-Phase Arrest and Cell Death Independently of p53 in Non-Small Cell Lung Cancer Cells. PLoS One 2015; 10:e0132052. [PMID: 26147394 PMCID: PMC4492957 DOI: 10.1371/journal.pone.0132052] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 06/09/2015] [Indexed: 11/18/2022] Open
Abstract
Koelreuteria henryi Dummer, an endemic plant of Taiwan, has been used as a folk medicine for the treatment of hepatitis, enteritis, cough, pharyngitis, allergy, hypertension, hyperlipidemia, and cancer. Austrobailignan-1, a natural lignan derivative isolated from Koelreuteria henryi Dummer, has anti-oxidative and anti-cancer properties. However, the effects of austrobailignan-1 on human cancer cells have not been studied yet. Here, we showed that austrobailignan-1 inhibited cell growth of human non-small cell lung cancer A549 and H1299 cell lines in both dose- and time-dependent manners, the IC50 value (48 h) of austrobailignan-1 were 41 and 22 nM, respectively. Data from flow cytometric analysis indicated that treatment with austrobailignan-1 for 24 h retarded the cell cycle at the G2/M phase. The molecular event of austrobailignan-1-mediated G2/M phase arrest was associated with the increase of p21Waf1/Cip1 and p27Kip1 expression, and decrease of Cdc25C expression. Moreover, treatment with 100 nM austrobailignan-1 for 48 h resulted in a pronounced release of cytochrome c followed by the activation of caspase-2, -3, and -9, and consequently induced apoptosis. These events were accompanied by the increase of PUMA and Bax, and the decrease of Mcl-1 and Bcl-2. Furthermore, our study also showed that austrobailignan-1 was a topoisomerase 1 inhibitor, as evidenced by a relaxation assay and induction of a DNA damage response signaling pathway, including ATM, and Chk1, Chk2, γH2AX phosphorylated activation. Overall, our results suggest that austrobailignan-1 is a novel DNA damaging agent and displays a topoisomerase I inhibitory activity, causes DNA strand breaks, and consequently induces DNA damage response signaling for cell cycle G2/M arrest and apoptosis in a p53 independent manner.
Collapse
Affiliation(s)
- Chun-Chi Wu
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC
- Department of Medical Research, Chung-Shan Medical University Hospital, Taichung, Taiwan, ROC
| | - Keh-Feng Huang
- Department of Applied Chemistry, Providence University, Taichung, Taiwan, ROC
| | - Tsung-Ying Yang
- Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
- Department of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Ya-Ling Li
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
| | - Chi-Luan Wen
- Taiwan Seed Improvement and Propagation Station, Council of Agriculture, Propagation Technology Section, Taichung, Taiwan, ROC
| | - Shih-Lan Hsu
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
| | - Tzu-Hsiu Chen
- Department of Health and Nutrition, Chia Nan University of Pharmacy & Science, Tainan, Taiwan, ROC
- * E-mail:
| |
Collapse
|
10
|
Elaborating the role of natural products-induced autophagy in cancer treatment: achievements and artifacts in the state of the art. BIOMED RESEARCH INTERNATIONAL 2015; 2015:934207. [PMID: 25821829 PMCID: PMC4363717 DOI: 10.1155/2015/934207] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 09/29/2014] [Accepted: 10/02/2014] [Indexed: 12/12/2022]
Abstract
Autophagy is a homeostatic process that is highly conserved across different types of mammalian cells. Autophagy is able to relieve tumor cell from nutrient and oxidative stress during the rapid expansion of cancer. Excessive and sustained autophagy may lead to cell death and tumor shrinkage. It was shown in literature that many anticancer natural compounds and extracts could initiate autophagy in tumor cells. As summarized in this review, the tumor suppressive action of natural products-induced autophagy may lead to cell senescence, provoke apoptosis-independent cell death, and complement apoptotic cell death by robust or target-specific mechanisms. In some cases, natural products-induced autophagy could protect tumor cells from apoptotic death. Technical variations in detecting autophagy affect data quality, and study focus should be made on elaborating the role of autophagy in deciding cell fate. In vivo study monitoring of autophagy in cancer treatment is expected to be the future direction. The clinical-relevant action of autophagy-inducing natural products should be highlighted in future study. As natural products are an important resource in discovery of lead compound of anticancer drug, study on the role of autophagy in tumor suppressive effect of natural products continues to be necessary and emerging.
Collapse
|
11
|
Li WJ, Yang CL, Chow KC, Kuo TW. Hexavalent chromium induces expression of mesenchymal and stem cell markers in renal epithelial cells. Mol Carcinog 2015; 55:182-92. [PMID: 25620490 PMCID: PMC5024070 DOI: 10.1002/mc.22268] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/11/2014] [Accepted: 11/26/2014] [Indexed: 11/11/2022]
Abstract
Cr(VI) causes severe kidney damage. The patient's renal function could gradually recover by spontaneous kidney regeneration. The molecular effect of Cr(VI) on recovery of kidney cells, however, has not been clearly elucidated. Here we show that Cr(VI) induces expression of mesenchymal and stem cell markers, cell markers, such as paxillin, vimentin, α-SMA, nanog, and CD133 of HK-2 cells. Moreover, Cr(VI) activates epithelial-to-mesenchymal transition (EMT). By revealing that levels of dihydrodiol dehydrogenase were promptly reduced following Cr(VI) challenge, our data suggested that DDH could be involved in a Cr(VI)-related oxidation to generate massive reactive oxygen species and H2 O2 , and to create intracellular hypoxia, which then increased levels of SUMO-1 activating enzyme subunit 2, and sumoylation of eukaryotic elongation factor-2, to mediate the subsequent molecular and cellular responses, e.g., expression of mesenchymal and stem cell markers. Pretreatment with vitamin C reduced Cr(VI)-related cellular effects. However, no evident effect was observed when vitamin C was added following Cr(VI) challenge.
Collapse
Affiliation(s)
- Wei-Jen Li
- Department of Health Beauty, School of Medical and Health Sciences, Fooyin University, Kaohsiung, Taiwan
| | - Cheng-Lin Yang
- Graduate Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Kuan-Chih Chow
- Graduate Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Ting-Wei Kuo
- Graduate Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
| |
Collapse
|