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Xu C, Huang X, Huang Y, Liu X, Wu M, Wang J, Duan X. Naringin induces apoptosis of gastric carcinoma cells via blocking the PI3K/AKT pathway and activating pro‑death autophagy. Mol Med Rep 2021; 24:772. [PMID: 34490484 PMCID: PMC8441985 DOI: 10.3892/mmr.2021.12412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/19/2021] [Indexed: 01/16/2023] Open
Abstract
Naringin (Nar) is one of the natural glycosides extracted from pomelo and other citrus fruits. It has various pharmacological activities, including anti‑inflammatory, antioxidant, anti‑proliferative and anti‑cancer. However, the underlying mechanisms by which Nar regulates apoptosis and autophagy in gastric cancer remain unclear. Thus, the present study aimed to assess the therapeutic effect of Nar and the underlying mechanisms. SNU‑1 cell proliferation was determined using Cell Counting Kit‑8 assay. Cell morphological changes were observed under a phase‑contrast microscope. The changes in the cell cycle were determined using flow cytometry analysis and the changes in cell apoptosis were determined using flow cytometry, Hoechst 33258 and TUNEL staining. The protein levels pertaining to the PI3K/AKT pathway and cell apoptosis and autophagy were monitored using western blot analysis. The results demonstrated that Nar significantly inhibited SNU‑1 cell growth and induced cell cycle arrest in the G0/G1 phase and cell apoptosis. Further mechanistic studies demonstrated that Nar blocked the PI3K/AKT pathway, activated cell autophagy and stimulated the expression of apoptosis‑associated protein cleaved caspase 3 and Bax, but decreased the expression of Bcl‑2. Preincubating SNU‑1 cells with 3‑methyladenine, a cell‑autophagy inhibitor, significantly alleviated the effects of Nar in promoting cell apoptosis and cleaved caspase 3 expression. It was concluded that Nar promoted SNU‑1 cell apoptosis via blocking the PI3K/AKT signaling pathway and activating cell autophagy.
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Affiliation(s)
- Cuixiang Xu
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Xiaoyan Huang
- Shaanxi Provincial Key Laboratory of Infection and Immune Diseases, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Yubin Huang
- Clinical Department, Xi'an Medical University, Xi'an, Shaanxi 710021, P.R. China
| | - Xiao Liu
- Clinical Department, Xi'an Medical University, Xi'an, Shaanxi 710021, P.R. China
| | - Min Wu
- Department of Research, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Jianhua Wang
- Second Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
| | - Xianglong Duan
- Second Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi 710068, P.R. China
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2
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Karthika C, Sureshkumar R. Incorporation of natural assumption to deal with cancer. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:4902-4917. [PMID: 33230796 DOI: 10.1007/s11356-020-11479-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 10/29/2020] [Indexed: 06/11/2023]
Abstract
The current state of the art for the use of natural ingredients for cancer therapy is by reviewing the publications and findings associated with cancer research with the employment of flavonoids. Cancer is the most furious disease making fear in the eyes of mankind. Though various treatment methods are prevalent, the patient's choices are shifting from synthetic treatment strategy to the natural ones. The plant-based metabolites are used very often in our life as a food additive and also as a medicine for primary health care. The safety profile and its efficacy add on advantage for the incorporation of the natural products separately or in combination as a remedy for cancer. Flavonoids, the plant-based metabolites are proven for their anti-inflammatory, anti-oxidant, and anti-cancer properties. Their chemotherapeutic and chemosensitizing power had made it interesting for the researchers to dig more on the health benefits of the flavonoids and incorporating it in a holistic approach, with its natural benefits to relieve the pain and the symptoms of the patient suffering from various medical conditions. The predominant approach for the management of cancer is by following safe and effective treatment modality. In this review, we mentioned the benefits of the flavonoids for the management of various cancers and its potency as a chemotherapeutic agent and as the chemosensitizer. Our mother nature had given remedies to cure various diseases in both human beings and animals by it; we just need to find out the sources and access to them.
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Affiliation(s)
- Chenmala Karthika
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty, Nilgiris, Tamil Nadu, India
| | - Raman Sureshkumar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Ooty, Nilgiris, Tamil Nadu, India.
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Kim SM, Vetrivel P, Ha SE, Kim HH, Kim JA, Kim GS. Apigetrin induces extrinsic apoptosis, autophagy and G2/M phase cell cycle arrest through PI3K/AKT/mTOR pathway in AGS human gastric cancer cell. J Nutr Biochem 2020; 83:108427. [PMID: 32559585 DOI: 10.1016/j.jnutbio.2020.108427] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 05/06/2020] [Accepted: 05/15/2020] [Indexed: 12/24/2022]
Abstract
Apigetrin is a flavonoid glycoside phytonutrient derived from fruits and vegetables that is well known for a variety of biological activities such as antioxidant and anti-inflammatory activities. In the current study, we determined the effect of apigetrin on AGS gastric cancer cell. Apigetrin reduced cancer cell proliferation and induced G2/M phase cell cycle arrest by regulating cyclin B1, cdc25c and cdk1 protein expression in AGS cell. Apigetrin treatment caused apoptotic cell death in AGS cells, characterized by the accumulation of apoptosis portion, cleavage of caspase-3 and poly ADP-ribose polymerase (PARP). Apigetrin-treated cells increased the expression of extrinsic apoptosis pathway proteins and mRNA. However, intrinsic apoptosis pathway related proteins were not altered. In addition, AGS cells treated with apigetrin increased autophagic cell death, featured by the formation of autophagic vacuole and acidic vesicular organelles. Autophagy marker proteins, such as LC3B-II and beclin-1, were increased, and p62, an autophagy flux marker protein, was also increased by endoplasmic reticulum stress. Also, the phosphorylation of PI3K/AKT/mTOR pathway proteins and its downstream targets in apigetrin-treated AGS cells was identified to be decreased. Taken together, these data suggest that apigetrin-treated AGS cells induced G2/M phase cell cycle arrest, extrinsic apoptosis and autophagic cell death through PI3K/AKT/mTOR pathway, which can lead to the inhibition of gastric cancer development. Thus, our findings strongly indicate that apigetrin is a basic natural derived compound that could be used as a nutrient source with potential anticancer activities against gastric cancer.
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Affiliation(s)
- Seong Min Kim
- Research Institute of Life science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, 52828, Republic, Republic of Korea.
| | - Preethi Vetrivel
- Research Institute of Life science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, 52828, Republic, Republic of Korea.
| | - Sang Eun Ha
- Research Institute of Life science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, 52828, Republic, Republic of Korea.
| | - Hun Hwan Kim
- Research Institute of Life science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, 52828, Republic, Republic of Korea.
| | - Jin-A Kim
- Department of Physical Therapy, International University of Korea, Jinju, 52833, Republic of Korea.
| | - Gon Sup Kim
- Research Institute of Life science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, 52828, Republic, Republic of Korea.
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4
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Zhang G, Wang Z, Chen W, Cao Y, Wu J, Qiang G, Ji A, Wu J, Jiang C. Dual effects of gossypol on human hepatocellular carcinoma via endoplasmic reticulum stress and autophagy. Int J Biochem Cell Biol 2019; 113:48-57. [PMID: 31128260 DOI: 10.1016/j.biocel.2019.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/19/2019] [Accepted: 05/21/2019] [Indexed: 12/16/2022]
Abstract
Treatment outcomes for hepatocellular carcinoma (HCC) remain unsatisfactory, and effective new therapeutic methods are urgently needed. Gossypol has been shown to have an anti-HCC effect, but the underlying mechanism requires further study. In this study, we found gossypol inhibited HCC cells in vitro and in vivo. Typical apoptosis was induced in HCC cells. Dilated ER and autophagosomes were observed by electron microscopy, and the activation of the unfolded protein response and autophagy markers suggested that gossypol induced both ER stress and autophagy. C/EBP homologous protein was the key factor that led to apoptotic cell death, whereas inositol-requiring enzyme 1α and eukaryotic initiation factor 2α played a protective role. Autophagy protected the cells from ER stress-related apoptosis. Both in vitro and in vivo studies indicated that inhibition of autophagy enhanced the anti-HCC effect of gossypol. Taken together, ER stress is the molecular mechanism underlying gossypol-induced apoptosis and autophagy. Gossypol exhibits anti-HCC activity primarily through the activation of apoptosis. However, gossypol-induced autophagy protects HCC cells from ER stress. Therefore, a combination therapy of gossypol and autophagy inhibitors may lead to an enhanced anti-HCC effect.
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Affiliation(s)
- Guang Zhang
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Zhongxia Wang
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Weibo Chen
- Department of Hepatobiliary Surgery, Changzhou First People's Hospital, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, China
| | - Yin Cao
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Junyi Wu
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China
| | - Guanghui Qiang
- Department of Hepatobiliary Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, China
| | - Anlai Ji
- Department of General Surgery, The Affiliated Hospital of Yangzhou University, 365 Hanjiang Middle Road, Yangzhou, Jiangsu 225000, China
| | - Junhua Wu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China.
| | - Chunping Jiang
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu 210008, China.
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Chiu CF, Lai GY, Chen CH, Chiu CC, Hung SW, Chang CF. 6,7-Dihydroxy-2-(4'-hydroxyphenyl)naphthalene induces HCT116 cell apoptosis through activation of endoplasmic reticulum stress and the extrinsic apoptotic pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:1609-1621. [PMID: 31190740 PMCID: PMC6512798 DOI: 10.2147/dddt.s193914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background Colorectal cancer is the third leading cause of cancer-related deaths worldwide, and therefore, the development of novel drugs for its prevention and therapy are urgently required. This study aimed to determine the molecular mechanism of 6,7-dihydroxy-2-(4′-hydroxyphenyl) naphthalene (PNAP-6)-induced cytotoxicity in human colorectal cancer (HCT116) cells. Methods The effects of 2-phenylnaphthalene derivatives on HCT116 cell growth and viability were assessed by MTT assays. The mechanisms involved in the regulation of the extrinsic apoptosis and endoplasmic reticulum (ER) stress pathways by PNAP-6 were analyzed by annexin-V/propidium iodide flow cytometric analysis, Hoechst 33342 fluorescent staining, and Western blotting. Results PNAP-6 was shown to have an IC50 value 15.20 μM. It induced G2/M phase arrest in HCT116 cells, associated with a marked decrease in cyclin B and CDK1 protein expression and increased caspase activation, PARP cleavage, chromatin condensation, and sub-G1 apoptosis. Moreover, we found that the apoptotic effects of PNAP-6 proceeded through extrinsic apoptosis and ER stress pathways, by increasing the expression of Fas protein and ER stress markers, including PERK, ATF4, CHOP, p-IRE1α, and XBP-1s. Conclusion These results suggest that 2-phenylnaphthalene derivatives, such as PNAP-6, have potential as new treatments for colorectal cancer.
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Affiliation(s)
- Ching-Feng Chiu
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan.,TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Guan-Ying Lai
- Master Program for Pharmaceutical Manufacture, China Medical University, Taichung 40402, Taiwan
| | - Chung-Hwan Chen
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung 80145, Taiwan.,Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chien-Chao Chiu
- Division of Animal Industry, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan, Hsinchu 300, Taiwan
| | - Shao-Wen Hung
- Division of Animal Industry, Animal Technology Laboratories, Agricultural Technology Research Institute, Xiangshan, Hsinchu 300, Taiwan.,Nursing Department, Yuanpei University, Xiangshan, Hsinchu 300, Taiwan
| | - Chi-Fen Chang
- Department of Anatomy, School of Medicine, China Medical University, Taichung 40402, Taiwan,
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Tham SY, Loh HS, Mai CW, Fu JY. Tocotrienols Modulate a Life or Death Decision in Cancers. Int J Mol Sci 2019; 20:E372. [PMID: 30654580 PMCID: PMC6359475 DOI: 10.3390/ijms20020372] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/05/2019] [Accepted: 01/10/2019] [Indexed: 02/06/2023] Open
Abstract
Malignancy often arises from sophisticated defects in the intricate molecular mechanisms of cells, rendering a complicated molecular ground to effectively target cancers. Resistance toward cell death and enhancement of cell survival are the common adaptations in cancer due to its infinite proliferative capacity. Existing cancer treatment strategies that target a single molecular pathway or cancer hallmark fail to fully resolve the problem. Hence, multitargeted anticancer agents that can concurrently target cell death and survival pathways are seen as a promising alternative to treat cancer. Tocotrienols, a minor constituent of the vitamin E family that have previously been reported to induce various cell death mechanisms and target several key survival pathways, could be an effective anticancer agent. This review puts forward the potential application of tocotrienols as an anticancer treatment from a perspective of influencing the life or death decision of cancer cells. The cell death mechanisms elicited by tocotrienols, particularly apoptosis and autophagy, are highlighted. The influences of several cell survival signaling pathways in shaping cancer cell death, particularly NF-κB, PI3K/Akt, MAPK, and Wnt, are also reviewed. This review may stimulate further mechanistic researches and foster clinical applications of tocotrienols via rational drug designs.
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Affiliation(s)
- Shiau-Ying Tham
- School of Biosciences, Faculty of Science and Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia.
| | - Hwei-San Loh
- School of Biosciences, Faculty of Science and Engineering, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia.
- Biotechnology Research Centre, University of Nottingham Malaysia Campus, Jalan Broga, Semenyih 43500, Selangor, Malaysia.
| | - Chun-Wai Mai
- School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia.
- Centre for Cancer and Stem Cell Research, Institute for Research, Development and Innovation, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Malaysia.
| | - Ju-Yen Fu
- Nutrition Unit, Product Development and Advisory Services Division, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, Kajang 43000, Selangor, Malaysia.
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Li Q, Zhu ZX, Zhang X, Luo W, Chang LP, Chen S, Wang YX, Xie SQ, Chang CC, Wang CJ. The lead optimization of the polyamine conjugate of flavonoid with a naphthalene motif: Synthesis and biological evaluation. Eur J Med Chem 2018; 146:564-576. [PMID: 29407981 DOI: 10.1016/j.ejmech.2018.01.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/22/2018] [Accepted: 01/22/2018] [Indexed: 01/08/2023]
Abstract
Polyamine conjugated flavonoid with a naphthalene moiety (ZYY14) displayed excellent therapeutic activity against hepatocellular carcinoma. In this study, three different series of novel flavonoid-polyamine conjugates were designed and screened against tumor cell lines. The structure-activity relationship study demonstrated the importance of the naphthalene moiety (as the B-ring), the basic side chains in the A-ring, and the methoxy group linked to the C-ring. The optimized compound 9b displayed better antitumor potency in vitro and in vivo than the lead compound ZYY14. Fluorescent assays revealed that 9b could enter cancer cells via polyamine transporter (PAT) and locate in mitochondria and endoplasmic reticulum. Compound 9b and ZYY14 demonstrated similar apoptotic mechanism in the cytotoxicity studies and stimulated the expression of apoptosis-related proteins, such as p-p38, p-JNK, p53 and Bax. In addition, 9b can initiate autophagy which inhibited the occurrence of apoptosis. Thus, 9b can be used as a valuable lead for the future development of antitumor agents.
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Affiliation(s)
- Qian Li
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Zi-Xin Zhu
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Xin Zhang
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Wen Luo
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China; Institute of Chemical Biology, Henan University, Kaifeng 475004, China.
| | - Li-Ping Chang
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Shuai Chen
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Yu-Xia Wang
- Chemistry Department, Henan University, Kaifeng 475004, China.
| | - Song-Qiang Xie
- Institute of Chemical Biology, Henan University, Kaifeng 475004, China
| | - Cong-Cong Chang
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China
| | - Chao-Jie Wang
- Key Lab of Natural Medicine and Immune Engineering, Henan University, Kaifeng 475004, China.
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Bjørklund G, Dadar M, Chirumbolo S, Lysiuk R. Flavonoids as detoxifying and pro-survival agents: What's new? Food Chem Toxicol 2017; 110:240-250. [PMID: 29079495 DOI: 10.1016/j.fct.2017.10.039] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/29/2017] [Accepted: 10/22/2017] [Indexed: 02/06/2023]
Abstract
The role of flavonoids in the survival machinery of cells has come in the spotlight due to the recent evidence of their effect on the relationship mitochondria-ER stress-proteasome, including the intracellular mechanisms of autophagy and apoptosis. Numerous experimental animal investigations and even human clinical studies have highlighted the major role of these natural compounds in the economy of life and their deep relationship with autotrophic organisms in the evolutionary space. Their role as anti-oxidant and oxidative stress preventive molecules has to date been investigated extensively in the literature. Despite this great amount of promising evidence, many concerns, however, remain, most of which dealing with biochemistry, bioavailability, pharmacokinetics, and interaction of flavonoids with gut microbiome, issues that make difficult any good attempt to introduce these molecules in the human healthcare systems as possible, encouraging therapeutic substances. This review tries to address and elucidate these items.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Mo i Rana, Norway.
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Salvatore Chirumbolo
- Department of Neurological and Movement Sciences, University of Verona, Verona, Italy
| | - Roman Lysiuk
- Department of Pharmacognosy and Botany, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
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Inhibition of endoplasmic reticulum stress alleviates cigarette smoke-induced airway inflammation and emphysema. Oncotarget 2017; 8:77685-77695. [PMID: 29100417 PMCID: PMC5652808 DOI: 10.18632/oncotarget.20768] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/04/2017] [Indexed: 12/19/2022] Open
Abstract
Chronic bronchitis and emphysema are pathologic features of chronic obstructive pulmonary disease (COPD). Cigarette smoke (CS)-induced endoplasmic reticulum (ER) stress has been implicated in the COPD development, but the molecular mechanism by which it contributes to COPD etiology and the specific role it plays in COPD pathogenesis remain poorly understood. Here, we aimed to determine the role of ER stress in the pathogenesis of CS-induced airway inflammation and emphysema. Exposure to CS significantly increased the expression of ER stress markers in Beas-2B cells and in mouse lungs, possibly through the production of oxidative stress. Further, inhibition of ER stress by 4-phenylbutyric acid (4-PBA) reduced CS extract-induced inflammation in Beas-2B cells through the modulation of NF-κB signaling. 4-PBA also protected against CS-induced airway inflammation and the development of emphysema in mice, which was associated with a reduction in NF-κB activation and alveolar cell apoptosis in the lungs. Taken together, our results suggest that ER stress is crucial for CS-induced inflammation and emphysema, and that targeting ER stress may represent a novel approach to the treatment of COPD.
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10
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Licochalcone A Inhibits the Proliferation of Human Lung Cancer Cell Lines A549 and H460 by Inducing G2/M Cell Cycle Arrest and ER Stress. Int J Mol Sci 2017; 18:ijms18081761. [PMID: 28805696 PMCID: PMC5578150 DOI: 10.3390/ijms18081761] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 08/06/2017] [Accepted: 08/08/2017] [Indexed: 01/13/2023] Open
Abstract
Licochalcone A (LicA), a flavonoid isolated from the famous Chinese medicinal herb Glycyrrhiza uralensis Fisch, has wide spectrum of pharmacological activities. In this study, the anti-cancer effects and potential mechanisms of LicA in non-small cell lung cancer (NSCLC) cells were studied. LicA decreased cell viability and induced apoptosis in a dose-dependent manner in NSCLC cells. LicA inhibited lung cancer cells growth by blocking cell cycle progression at the G2/M transition and inducing apoptosis. LicA treatment decreased the expression of MDM2, Cyclin B1, Cdc2 and Cdc25C in H460 and A549 cancer cell lines. In addition, LicA induced caspase-3 activation and poly-ADP-ribose polymerase (PARP) cleavage, which displayed features of apoptotic signals. Furthermore, LicA increased the expression of endoplasmic reticulum (ER) stress related proteins, such as p-EIF2α and ATF4. These data provide evidence that LicA has the potential to be used in the treatment of lung cancer.
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Lindholm D, Korhonen L, Eriksson O, Kõks S. Recent Insights into the Role of Unfolded Protein Response in ER Stress in Health and Disease. Front Cell Dev Biol 2017; 5:48. [PMID: 28540288 PMCID: PMC5423914 DOI: 10.3389/fcell.2017.00048] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 04/13/2017] [Indexed: 12/20/2022] Open
Abstract
Unfolded stress response (UPR) is a conserved cellular pathway involved in protein quality control to maintain homeostasis under different conditions and disease states characterized by cell stress. Although three general schemes of and genes induced by UPR are rather well-established, open questions remain including the precise role of UPR in human diseases and the interactions between different sensor systems during cell stress signaling. Particularly, the issue how the normally adaptive and pro-survival UPR pathway turns into a deleterious process causing sustained endoplasmic reticulum (ER) stress and cell death requires more studies. UPR is also named a friend with multiple personalities that we need to understand better to fully recognize its role in normal physiology and in disease pathology. UPR interacts with other organelles including mitochondria, and with cell stress signals and degradation pathways such as autophagy and the ubiquitin proteasome system. Here we review current concepts and mechanisms of UPR as studied in different cells and model systems and highlight the relevance of UPR and related stress signals in various human diseases.
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Affiliation(s)
- Dan Lindholm
- Medicum, Department of Biochemistry and Developmental Biology, Faculty of Medicine, University of HelsinkiHelsinki, Finland.,Minerva Foundation Institute for Medical ResearchHelsinki, Finland
| | - Laura Korhonen
- Minerva Foundation Institute for Medical ResearchHelsinki, Finland.,Division of Child Psychiatry, Helsinki University Central HospitalHelsinki, Finland
| | - Ove Eriksson
- Medicum, Department of Biochemistry and Developmental Biology, Faculty of Medicine, University of HelsinkiHelsinki, Finland
| | - Sulev Kõks
- Department of Pathophysiology, University of TartuTartu, Estonia.,Department of Reproductive Biology, Estonian University of Life SciencesTartu, Estonia
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