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Rodponthukwaji K, Pingrajai P, Jantana S, Taya S, Duangchan K, Nguyen KT, Srisawat C, Punnakitikashem P. Epigallocatechin Gallate Potentiates the Anticancer Effect of AFP-siRNA-Loaded Polymeric Nanoparticles on Hepatocellular Carcinoma Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:47. [PMID: 38202502 PMCID: PMC10780411 DOI: 10.3390/nano14010047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
To develop a potential cancer treatment, we formulated a novel drug delivery platform made of poly(lactic-co-glycolic) acid (PLGA) and used a combination of an emerging siRNA technology and an extracted natural substance called catechins. The synthesized materials were characterized to determine their properties, including morphology, hydrodynamic size, charge, particle stability, and drug release profile. The therapeutic effect of AFP-siRNA and epigallocatechin gallate (EGCG) was revealed to have remarkable cytotoxicity towards HepG2 when in soluble formulation. Notably, the killing effect was enhanced by the co-treatment of AFP-siRNA-loaded PLGA and EGCG. Cell viability significantly dropped to 59.73 ± 6.95% after treatment with 12.50 μg/mL of EGCG and AFP-siRNA-PLGA. Meanwhile, 80% of viable cells were observed after treatment with monotherapy. The reduction in the survival of cells is a clear indication of the complementary action of both active EGCG and AFP-siRNA-loaded PLGA. The corresponding cell death was involved in apoptosis, as evidenced by the increased caspase-3/7 activity. The combined treatment exhibited a 2.5-fold increase in caspase-3/7 activity. Moreover, the nanoparticles were internalized by HepG2 in a time-dependent manner, indicating the appropriate use of PLGA as a carrier. Accordingly, a combined system is an effective therapeutic strategy.
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Affiliation(s)
- Kamonlatth Rodponthukwaji
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
- Research Network NANOTEC-Mahidol University in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
- Siriraj Center of Research Excellence in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Ponpawee Pingrajai
- Research Network NANOTEC-Mahidol University in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
| | - Saranrat Jantana
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
- Siriraj Center of Research Excellence in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Seri Taya
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
| | - Kongpop Duangchan
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
| | - Kytai T. Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA;
| | - Chatchawan Srisawat
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
- Research Network NANOTEC-Mahidol University in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
- Siriraj Center of Research Excellence in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Primana Punnakitikashem
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand; (K.R.); (S.J.); (S.T.); (K.D.); (C.S.)
- Research Network NANOTEC-Mahidol University in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
- Siriraj Center of Research Excellence in Theranostic Nanomedicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Vafaei S, Ciebiera M, Omran MM, Ghasroldasht MM, Yang Q, Leake T, Wolfe R, Ali M, Al-Hendy A. Evidence-Based Approach for Secondary Prevention of Uterine Fibroids (The ESCAPE Approach). Int J Mol Sci 2023; 24:15972. [PMID: 37958957 PMCID: PMC10648339 DOI: 10.3390/ijms242115972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Uterine fibroids (UFs) are common tumors in women of reproductive age. It is imperative to comprehend UFs' associated risk factors to facilitate early detection and prevention. Simple relying on surgical/pharmacological treatment of advanced disease is not only highly expensive, but it also deprives patients of good quality of life (QOL). Unfortunately, even if the disease is discovered early, no medical intervention is traditionally initiated until the disease burden becomes high, and only then is surgical intervention performed. Furthermore, after myomectomy, the recurrence rate of UFs is extremely high with the need for additional surgeries and other interventions. This confused approach is invasive and extremely costly with an overall negative impact on women's health. Secondary prevention is the management of early disease to slow down its progression or even halt it completely. The current approach of watchful observation for early disease is considered a major missed opportunity in the literature. The aim of this article is to present an approach named the ESCAPE (Evidence-Based Approach for Secondary Prevention) of UF management. It comprises simple, inexpensive, and safe steps that can arrest the development of UFs, promote overall reproductive health, decrease the number of unnecessary surgeries, and save billions of health care systems' dollars worldwide.
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Affiliation(s)
- Somayeh Vafaei
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
| | - Michał Ciebiera
- Second Department of Obstetrics and Gynecology, Center of Postgraduate Medical Education, 00-189 Warsaw, Poland;
- Warsaw Institute of Women’s Health, 00-189 Warsaw, Poland
- Development and Research Center of Non-Invasive Therapies, Pro-Familia Hospital, 35-302 Rzeszow, Poland
| | - Mervat M. Omran
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
| | - Mohammad Mousaei Ghasroldasht
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
| | - Qiwei Yang
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
| | - Tanya Leake
- The White Dress Project, Atlanta, GA 30309, USA; (T.L.); (R.W.)
| | - Rochelle Wolfe
- The White Dress Project, Atlanta, GA 30309, USA; (T.L.); (R.W.)
| | - Mohamed Ali
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
| | - Ayman Al-Hendy
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA; (S.V.); (M.M.O.); (M.M.G.); (Q.Y.)
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Almaguer G, Almaguer-Vargas G, Molina-Trinidad EM, Becerril-Flores MA, Montejano B, Madrigal-Santillan E, Hernández-Ceruelos A, Figueroa-Gutiérrez AH, Montejano E, Montejano-Rodríguez JR. Antitumor Effect of Epigallocatechin Gallate and Vincristine in Mice with L5178Y Lymphoma. PLANTS (BASEL, SWITZERLAND) 2023; 12:3757. [PMID: 37960113 PMCID: PMC10647321 DOI: 10.3390/plants12213757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/24/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023]
Abstract
The main objective of research into new therapies is the search for more efficacy and fewer toxic effects in cancer treatments. On one hand, vincristine (VCR) is a chemotherapeutic used in different kinds of tumors. On the other hand, epigallocatechin gallate (EGCG) is a green tea metabolite that has shown an antineoplastic effect in diverse investigations, so the objective of this work is to evaluate the antitumor effects of the EGCG/VCR combination on tumor volume and survival. To achieve this objective, the solid model of lymphoma L5178Y was used in BALB/c mice with different doses of VCR, EGCG, and their combination allowed tumor growth and survival time recording. After tumor collection, measurements, and immunohistochemistry for p53, Bcl2, and Cyclin D1 were performed. The results showed that the EGCG/vincristine combination had a greater antitumor effect than those effects of vincristine and EGCG. It can be attributed to the fact that the greatest inhibition of Bcl2 was present in gathering of EGCG harvest with vincristine. Therefore, the combination of EGCG with vincristine has a better antineoplastic effect by inhibiting tumor development and increasing survival on both substances independently.
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Affiliation(s)
- Georgina Almaguer
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Gustavo Almaguer-Vargas
- Plant Breeding Department, Horticulture Institute, Chapingo Autonomous University, Federal Highway Mexico-Texcoco km 38.5, Chapingo, Texcoco 56230, Mexico
| | - Eva María Molina-Trinidad
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Marco Antonio Becerril-Flores
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Brenda Montejano
- Department of Pharmacy, Hospital San José, Santiago de Querétaro 76180, Mexico
| | - Eduardo Madrigal-Santillan
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Alejandra Hernández-Ceruelos
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Ana Hilda Figueroa-Gutiérrez
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
| | - Ethoan Montejano
- Interdisciplinary Professional Unit of Biotechnology IPN, National Polytechnic Institute, Av. Acueducto, La Laguna Ticoman, Gustavo A. Madero, Mexico City 07340, Mexico;
| | - José Ramón Montejano-Rodríguez
- Institute of Health Sciences, Autonomous University of the State of Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla 42183, Mexico
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Sanaei M, Kavoosi F, Poursadgh Soufiani I. Effect of Sodium Butyrate and Epigallocatechin-3-Gallate on the Genes Expression of Intrinsic Apoptotic Pathway on PA-TU-8902, CFPAC-1, and CAPAN-1 Human Pancreatic Cancer Cell Lines: Epi-drugs and Intrinsic Apoptotic Pathway in Pancreatic Cancer. Galen Med J 2022; 11:e2248. [PMID: 36698691 PMCID: PMC9838111 DOI: 10.31661/gmj.v11i.2248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Indexed: 11/07/2022] Open
Abstract
Background: Histone deacetylase inhibitors (HDACIs) are novel anticancer agents that induce cell death and cycle arrest. Several studies reported that HDACIs induce apoptosis via two well-defined intrinsic/mitochondrial and death receptor pathways. In addition to HDACIs, DNA methyltransferase inhibitors effectively revert the promoter hypermethylation of tumor suppressor genes and apoptosis induction. The current study aimed to investigate the effect of sodium butyrate and epigallocatechin-3-gallate (EGCG) on the genes expression of the intrinsic pathway (BAX, BAK, APAF1, Bcl-2, and Bcl-xL), p21, and p53 on PA-TU-8902, CFPAC-1, and CAPAN-1 human pancreatic cancer cell lines. Materials and Methods:The PA-TU-8902, CFPAC-1, and CAPAN-1 cells were treated with sodium butyrate and EGCG. To determine cell viability, cell apoptosis, and the relative gene expression level, the 3-(4,4-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, flow cytometry, and real-time quantitative reverse transcription polymerase chain reaction were done, respectively. Results: Both compounds changed the expression levels of the mentioned genes in a p53-dependent and -independent manner, which induced cell apoptosis and inhibited cell growth in all three cell lines. Conclusion: We indicated that sodium butyrate and EGCG could induce apoptosis in human pancreatic cancer cell lines.[GMJ.2022;11:e2248].
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Affiliation(s)
- Masumeh Sanaei
- Research Center for Non-Communicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Fraidoon Kavoosi
- Research Center for Non-Communicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran
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Sharma E, Attri DC, Sati P, Dhyani P, Szopa A, Sharifi-Rad J, Hano C, Calina D, Cho WC. Recent updates on anticancer mechanisms of polyphenols. Front Cell Dev Biol 2022; 10:1005910. [PMID: 36247004 PMCID: PMC9557130 DOI: 10.3389/fcell.2022.1005910] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/06/2022] [Indexed: 12/03/2022] Open
Abstract
In today’s scenario, when cancer cases are increasing rapidly, anticancer herbal compounds become imperative. Studies on the molecular mechanisms of action of polyphenols published in specialized databases such as Web of Science, Pubmed/Medline, Google Scholar, and Science Direct were used as sources of information for this review. Natural polyphenols provide established efficacy against chemically induced tumor growth with fewer side effects. They can sensitize cells to various therapies and increase the effectiveness of biotherapy. Further pharmacological translational research and clinical trials are needed to evaluate theirs in vivo efficacy, possible side effects and toxicity. Polyphenols can be used to design a potential treatment in conjunction with existing cancer drug regimens such as chemotherapy and radiotherapy.
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Affiliation(s)
- Eshita Sharma
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Dharam Chand Attri
- High Altitude Plant Physiology Research Centre (HAPPRC), HNB Garhwal University, Srinagar, Uttarakhand, India
| | - Priyanka Sati
- Graphic Era University, Dehradun, Uttarakhand, India
| | - Praveen Dhyani
- Department of Biotechnology, Kumaun University, Nainital, Uttarakhand, India
| | - Agnieszka Szopa
- Chair and Department of Pharmaceutical Botany, Medical College, Jagiellonian University, Kraków, Poland
| | - Javad Sharifi-Rad
- Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
- *Correspondence: Javad Sharifi-Rad, ; Christophe Hano, ; Daniela Calina, ; William C. Cho,
| | - Christophe Hano
- Department of Biological Chemistry, University of Orleans, Eure et Loir Campus, Chartres, France
- *Correspondence: Javad Sharifi-Rad, ; Christophe Hano, ; Daniela Calina, ; William C. Cho,
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, Craiova, Romania
- *Correspondence: Javad Sharifi-Rad, ; Christophe Hano, ; Daniela Calina, ; William C. Cho,
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong SAR, China
- *Correspondence: Javad Sharifi-Rad, ; Christophe Hano, ; Daniela Calina, ; William C. Cho,
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Okagu IU, Ezeorba TPC, Aguchem RN, Ohanenye IC, Aham EC, Okafor SN, Bollati C, Lammi C. A Review on the Molecular Mechanisms of Action of Natural Products in Preventing Bone Diseases. Int J Mol Sci 2022; 23:ijms23158468. [PMID: 35955603 PMCID: PMC9368769 DOI: 10.3390/ijms23158468] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 12/10/2022] Open
Abstract
The drugs used for treating bone diseases (BDs), at present, elicit hazardous side effects that include certain types of cancers and strokes, hence the ongoing quest for the discovery of alternatives with little or no side effects. Natural products (NPs), mainly of plant origin, have shown compelling promise in the treatments of BDs, with little or no side effects. However, the paucity in knowledge of the mechanisms behind their activities on bone remodeling has remained a hindrance to NPs’ adoption. This review discusses the pathological development of some BDs, the NP-targeted components, and the actions exerted on bone remodeling signaling pathways (e.g., Receptor Activator of Nuclear Factor κ B-ligand (RANKL)/monocyte/macrophage colony-stimulating factor (M-CSF)/osteoprotegerin (OPG), mitogen-activated protein kinase (MAPK)s/c-Jun N-terminal kinase (JNK)/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), Kelch-like ECH-associated protein 1 (Keap-1)/nuclear factor erythroid 2–related factor 2 (Nrf2)/Heme Oxygenase-1 (HO-1), Bone Morphogenetic Protein 2 (BMP2)-Wnt/β-catenin, PhosphatidylInositol 3-Kinase (PI3K)/protein kinase B (Akt)/Glycogen Synthase Kinase 3 Beta (GSK3β), and other signaling pathways). Although majority of the studies on the osteoprotective properties of NPs against BDs were conducted ex vivo and mostly on animals, the use of NPs for treating human BDs and the prospects for future development remain promising.
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Affiliation(s)
- Innocent U. Okagu
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Timothy P. C. Ezeorba
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Rita N. Aguchem
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
| | - Ikenna C. Ohanenye
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Emmanuel C. Aham
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Nigeria; (I.U.O.); (T.P.C.E.); (R.N.A.); (E.C.A.)
- Natural Science Unit, School of General Studies, University of Nigeria, Nsukka 410001, Nigeria
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sunday N. Okafor
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka 410001, Nigeria;
| | - Carlotta Bollati
- Department of Pharmaceutical Sciences, University of Milan, via Mangiagalli 25, 20133 Milano, Italy;
| | - Carmen Lammi
- Department of Pharmaceutical Sciences, University of Milan, via Mangiagalli 25, 20133 Milano, Italy;
- Correspondence: ; Tel.: +39-02-5031-9372
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Sahadevan R, Singh S, Binoy A, Sadhukhan S. Chemico-biological aspects of (-)-epigallocatechin- 3-gallate (EGCG) to improve its stability, bioavailability and membrane permeability: Current status and future prospects. Crit Rev Food Sci Nutr 2022; 63:10382-10411. [PMID: 35491671 DOI: 10.1080/10408398.2022.2068500] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Natural products have been a bedrock for drug discovery for decades. (-)-Epigallocatechin-3-gallate (EGCG) is one of the widely studied natural polyphenolic compounds derived from green tea. It is the key component believed to be responsible for the medicinal value of green tea. Significant studies implemented in in vitro, in cellulo, and in vivo models have suggested its anti-oxidant, anti-cancer, anti-diabetic, anti-inflammatory, anti-microbial, neuroprotective activities etc. Despite having such a wide array of therapeutic potential and promising results in preclinical studies, its applicability to humans has encountered with rather limited success largely due to the poor bioavailability, poor membrane permeability, rapid metabolic clearance and lack of stability of EGCG. Therefore, novel techniques are warranted to address those limitations so that EGCG or its modified analogs can be used in the clinical setup. This review comprehensively covers different strategies such as structural modifications, nano-carriers as efficient drug delivery systems, synergistic studies with other bioactivities to improve the chemico-biological aspects (e.g., stability, bioavailability, permeability, etc.) of EGCG for its enhanced pharmacokinetics and pharmacological properties, eventually enhancing its therapeutic potentials. We think this review article will serve as a strong platform with comprehensive literature on the development of novel techniques to improve the bioavailability of EGCG so that it can be translated to the clinical applications.
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Affiliation(s)
- Revathy Sahadevan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Satyam Singh
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, India
| | - Anupama Binoy
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
| | - Sushabhan Sadhukhan
- Department of Chemistry, Indian Institute of Technology Palakkad, Kerala, India
- Department of Biological Sciences and Engineering, Indian Institute of Technology Palakkad, Kerala, India
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Chen S, Nishi M, Morine Y, Shimada M, Tokunaga T, Kashihara H, Takasu C, Yamada S, Wada Y. Epigallocatechin‑3‑gallate hinders metabolic coupling to suppress colorectal cancer malignancy through targeting aerobic glycolysis in cancer‑associated fibroblasts. Int J Oncol 2022; 60:19. [PMID: 35029285 PMCID: PMC8776327 DOI: 10.3892/ijo.2022.5309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/29/2021] [Indexed: 12/11/2022] Open
Abstract
In recent times, researchers working on tumor metabolism have paid increasing attention to the tumor microenvironment. Emerging evidence has confirmed that epigenetic modifications of cancer-associated fibroblasts (CAFs) alters the characteristics of glucose metabolism to achieve a symbiotic relationship with the cancer cells. Epigallocatechin-3-gallate (EGCG) exerts anti-tumor effects via a variety of mechanisms, although the underlying mechanism that accounts for the effects of EGCG on glucose metabolic alterations of CAFs have yet to be elucidated. In the present study, through co-culture with colorectal cancer (CRC) cells, human intestinal fibroblasts were transformed into CAFs, and exhibited enhanced aerobic glycolysis. Induced CAFs were able to enhance the proliferation, migration and invasion of CRC cells in vitro. EGCG treatment led to direct inhibition of the proliferation and migration of CRC cells; furthermore, EGCG treatment of CAFs suppressed their tumor-promoting capabilities by inhibiting their glycolytic activity. Blocking the lactic acid efflux of CAFs with a monocarboxylate transporter 4 (MCT4) inhibitor or through silencing MCT4 could also suppress their tumor-promoting capabilities, indicating that lactate fulfills an important role in the metabolic coupling that occurs between CAFs and cancer cells. Taken together, the results of the present study showed that EGCG targeting of the metabolism of tumor stromal cells provided a safe and effective strategy of anti-cancer therapy.
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Affiliation(s)
- Shuhai Chen
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Masaaki Nishi
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Yuji Morine
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Mitsuo Shimada
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Takuya Tokunaga
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Hideya Kashihara
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Chie Takasu
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Shinichiro Yamada
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
| | - Yuma Wada
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima 770‑8503, Japan
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Ashraf W, Ahmad T, Almalki NAR, Krifa M, Zaayter L, Pizzi A, Muller CD, Hamiche A, Mély Y, Bronner C, Mousli M. Tannin extract from maritime pine bark exhibits anticancer properties by targeting the epigenetic UHRF1/DNMT1 tandem leading to the re-expression of TP73. Food Funct 2022; 13:316-326. [PMID: 34897340 DOI: 10.1039/d1fo01484f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Maritime pine bark is a rich source of polyphenolic compounds and is commonly employed as a herbal supplement worldwide. This study was designed to check the potential of maritime pine tannin extract (MPTE) in anticancer therapy and to determine the underlying mechanism of action. Our results showed that MPTE, containing procyanidin oligomers and lanostane type terpenoids, has an inhibitory effect on cancer cell proliferation through cell cycle arrest in the G2/M phase. Treatment with MPTE also induced apoptosis in a concentration-dependent manner in human cancer cell lines (HeLa and U2OS), as evidenced by the enhanced activation of caspase 3 and the cleavage of PARP along with the downregulation of the antiapoptotic protein Bcl-2. Interestingly, human non-cancerous fibroblasts are much less sensitive to MPTE, suggesting that it preferentially targets cancer cells. MPTE played a pro-oxidant role in cancer cells and promoted the expression of the p73 tumor suppressor gene in p53-deficient cells. It also downregulated the protooncogenic proteins UHRF1 and DNMT1, mediators of the DNA methylation machinery, and reduced the global methylation levels in HeLa cells. Overall, our results show that maritime pine tannin extract can play a favorable role in cancer treatment, and can be further explored by the pharmaceutical industry.
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Affiliation(s)
- Waseem Ashraf
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France. .,Department of Pharmacology, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan
| | - Tanveer Ahmad
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France.
| | - Naif A R Almalki
- Department of Functional Genomics, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 CNRS UMR 7104, Université de Strasbourg, Equipe labellisée Ligue contre le Cancer, Illkirch, France
| | - Mounira Krifa
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France. .,Unit of Bioactive and Natural Substances and Biotechnology UR17ES49, Faculty of Dental Medicine, University of Monastir, Monastir, Tunisia
| | - Liliyana Zaayter
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France.
| | | | - Christian D Muller
- Institut Pluridisciplinaire Hubert Curien, UMR 7178 CNRS Université de Strasbourg, Illkirch, France
| | - Ali Hamiche
- Department of Functional Genomics, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 CNRS UMR 7104, Université de Strasbourg, Equipe labellisée Ligue contre le Cancer, Illkirch, France
| | - Yves Mély
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France.
| | - Christian Bronner
- Department of Functional Genomics, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 CNRS UMR 7104, Université de Strasbourg, Equipe labellisée Ligue contre le Cancer, Illkirch, France
| | - Marc Mousli
- Laboratory of Bioimaging and Pathologies, UMR 7021 CNRS, Université de Strasbourg, Faculté de Pharmacie, Illkirch, France.
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10
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Jokar MH, Sedighi S, Moradzadeh M. A comparative study of anti-leukemic effects of kaempferol and epigallocatechin-3-gallate (EGCG) on human leukemia HL-60 cells. AVICENNA JOURNAL OF PHYTOMEDICINE 2021; 11:314-323. [PMID: 34290963 PMCID: PMC8264220 DOI: 10.22038/ajp.2021.17604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 10/19/2020] [Accepted: 11/05/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Acute promyelocytic leukemia (APL) is among the most threatening hematological malignant cancers. Defects in cell growth and apoptotic pathways lead to the pathogenesis of the disease as well as its resistance to therapy; therefore, it is a good model for examining pro-apoptotic agents. The present study compared the molecular mechanism induced by kaempferol and epigallocatechin gallate (EGCG) as well as all-trans retinoic acid (ATRA), in HL-60 leukemia cells during five days. MATERIALS AND METHODS Cell viability was determined by resazurin assay following treatment with ATRA (10 µM), EGCG, and kaempferol (12.5-100 µM), and apoptosis was detected by the ANX V/PI kit. Moreover, the levels of genes involved in apoptosis (PI3K, AKT, BCL2, BAX, P21, PTEN, CASP3, CASP8, and CASP9) and multi-drug resistance (MDR, ABCB1 and ABCC1) were assessed by using real-time PCR test. RESULTS Based on the findings, kaempferol decreased cell viability and increased apoptosis in HL60 cells more than EGCG. Apoptosis was induced via extrinsic and intrinsic pathways in HL60 cells by kaempferol and EGCG. In addition, kaempferol and EGCG increased apoptosis and inhibited MDR in a concentration- and time-dependent manner. CONCLUSION Kaempferol at high concentrations can be taken into consideration for treating patients with APL as compared with EGCG.
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Affiliation(s)
- Mohammad Hassan Jokar
- Golestan Rheumatology Research Center, Sayad Shirazi Hospital, Golestan University of Medical Sciences, Gorgan, Iran
- Equal first author
| | - Sima Sedighi
- Golestan Rheumatology Research Center, Sayad Shirazi Hospital, Golestan University of Medical Sciences, Gorgan, Iran
- Equal first author
| | - Maliheh Moradzadeh
- Golestan Rheumatology Research Center, Sayad Shirazi Hospital, Golestan University of Medical Sciences, Gorgan, Iran
- Corresponding Author: Tel: +981732239791, Fax: +981732239791,
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11
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Ding C, Fu S, Chen X, Chen C, Wang H, Zhong L. Epigallocatechin gallate affects the proliferation of human alveolar osteoblasts and periodontal ligament cells, as well as promoting cell differentiation by regulating PI3K/Akt signaling pathway. Odontology 2021; 109:729-740. [PMID: 33674907 DOI: 10.1007/s10266-021-00597-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 02/08/2021] [Indexed: 01/09/2023]
Abstract
Human periodontal ligament cells (hPDLCs) and human alveolar osteoblasts (hAOBs) play pivotal roles in periodontium. The regulatory effects of epigallocatechin gallate (EGCG) on hPDLCs and hAOBs remained unclear. This study probed into the functions of EGCG treating periodontal diseases. Cultured hAOBs and hPDLCs were passaged and observed by microscopic examination, and alkaline phosphatase (ALP) and immumohistochemical staining were performed for verification. hAOBs and hPDLCs were treated with EGCG and LY294002 + EGCG, then the proliferation of the two cells was assayed by MTT. Mineralization of the treated hAOBs and hPDLCs was detected by ALP activity experiment and Alizarin Red S staining kit. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were performed for the detection of the expressions of differentiation-related mRNAs and PI3K/Akt signaling pathway-related proteins in the two cells. The third passage of hAOBs mainly showed triangle shape and were positive by ALP staining. hPDLCs in passage 3 adhered to the wall in spiral or radial pattern with positively stained vimentin and negatively stained keratin. Cell proliferation and ALP activity of the hAOBs and hPDLCs were increased by EGCG treatment. The mineralized nodules and expressions of differentiation-related mRNAs, the phosphorylation of PI3K and Akt of the hAOBs and hPDLCs were promoted by EGCG treatment, while the effects of LY294002 treatment were opposite to EGCG treatment. Epigallocatechin gallate affected the proliferation and differentiation of hAOBs and hPDLCs through regulating PI3K/Akt signaling pathway.
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Affiliation(s)
- Cheng Ding
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Shulei Fu
- School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Xing Chen
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Chongchong Chen
- School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Huiming Wang
- The Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
| | - Liangjun Zhong
- Department of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China.
- School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China.
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12
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Potential Therapeutic Targets of Epigallocatechin Gallate (EGCG), the Most Abundant Catechin in Green Tea, and Its Role in the Therapy of Various Types of Cancer. Molecules 2020; 25:molecules25143146. [PMID: 32660101 PMCID: PMC7397003 DOI: 10.3390/molecules25143146] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023] Open
Abstract
Epigallocatechin-3-gallate (EGCG), an active compound of green tea and its role in diseases cure and prevention has been proven. Its role in diseases management can be attributed to its antioxidant and anti-inflammatory properties. The anti-cancer role of this green tea compound has been confirmed in various types of cancer and is still being under explored. EGCG has been proven to possess a chemopreventive effect through inhibition of carcinogenesis process such as initiation, promotion, and progression. In addition, this catechin has proven its role in cancer management through modulating various cell signaling pathways such as regulating proliferation, apoptosis, angiogenesis and killing of various types of cancer cells. The additive or synergistic effect of epigallocatechin with chemopreventive agents has been verified as it reduces the toxicities and enhances the anti-cancerous effects. Despite its effectiveness and safety, the implications of EGCG in cancer prevention is certainly still discussed due to a poor bioavailability. Several studies have shown the ability to overcome poor bioavailability through nanotechnology-based strategies such as encapsulation, liposome, micelles, nanoparticles and various other formulation. In this review, we encapsulate therapeutic implication of EGCG in cancer management and the mechanisms of action are discussed with an emphasis on human clinical trials.
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13
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Won YS, Seo KI. Sanggenol L promotes apoptotic cell death in melanoma skin cancer cells through activation of caspase cascades and apoptosis-inducing factor. Food Chem Toxicol 2020; 138:111221. [PMID: 32084496 DOI: 10.1016/j.fct.2020.111221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/22/2020] [Accepted: 02/17/2020] [Indexed: 12/18/2022]
Abstract
Sanggenol L is one component of root bark of Morus alba. The molecular and cellular mechanisms of sanggenol L effects on melanoma cells are not well known. Recently, melanoma is the most common skin cancer with a high mortality rate not only in United States, but also in East Asia. Therefore, safe and effective treatments for melanoma treatment are required. In this study, we investigated whether or not sanggenol L possesses anti-cancer activity in human and mouse melanoma skin cancer cells. Sanggenol L treatment exerted significant cell growth inhibitory effects and inhibited colony formation capacity against B16, SK-MEL-2, and SK-MEL-28 melanoma skin cancer cells, whereas HaCaT human epithelial keratinocyte cells was unaffected by sanggenol L treatment. Sanggenol L treatment resulted in apoptotic cell death in melanoma skin cancer cells, which was characterized by accumulation of apoptotic cells, nuclear condensation, and apoptotic bodies. We also showed that sanggenol L treatment induced caspase-dependent apoptosis (up-regulation of Bax and cleaved-PARP or down-regulation of Bid, Bcl-2, procaspse-3, -8, and -9), induction of caspase-independent apoptosis (up-regulation of AIF and Endo G on cytosol) in melanoma skin cancer cells. These results suggest that sanggenol L induces caspase-dependent and -independent apoptosis in melanoma skin cancer cells.
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Affiliation(s)
- Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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14
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Fei F, Su N, Li X, Fei Z. Neuroprotection mediated by natural products and their chemical derivatives. Neural Regen Res 2020; 15:2008-2015. [PMID: 32394948 PMCID: PMC7716029 DOI: 10.4103/1673-5374.282240] [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] [Indexed: 12/12/2022] Open
Abstract
Neuronal injuries can lead to various diseases such as neurodegenerative diseases, stroke, trauma, ischemia and, more specifically, glaucoma and optic neuritis. The cellular mechanisms that regulate neuronal death include calcium influx and calcium overload, excitatory amino acid release, oxidative stress, inflammation and microglial activation. Much attention has been paid to the effective prevention and treatment of neuroprotective drugs by natural products. This review summarizes the neuroprotective aspects of natural products, extracted from Panax ginseng, Camellia sinensis, soy and some other plants, and some of their chemical derivatives. Their antioxidative and anti-inflammatory action and their inhibition of apoptosis and microglial activation are assessed. This will provide new directions for the development of novel drugs and strategies to treat neurodegenerative diseases.
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Affiliation(s)
- Fei Fei
- Department of Ophthalmology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Ning Su
- Department of Radiation Oncology, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Xia Li
- Department of Neurosurgery, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Zhou Fei
- Department of Neurosurgery, Xijing Hospital, the Fourth Military Medical University, Xi'an, Shaanxi Province, China
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15
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Won YS, Seo KI. Lupiwighteone induces caspase-dependent and -independent apoptosis on human breast cancer cells via inhibiting PI3K/Akt/mTOR pathway. Food Chem Toxicol 2019; 135:110863. [PMID: 31604113 DOI: 10.1016/j.fct.2019.110863] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/04/2019] [Accepted: 09/27/2019] [Indexed: 12/25/2022]
Abstract
Breast cancer is one of the most common causes of mortality in women. Lupiwighteone has anticancer effects in prostate cancer cells and neuroblastoma cells. However, the molecular and cellular mechanisms of lupiwighteone effects on human breast cancer cells are not as well known. In the present study, we investigated the effects of lupiwighteone on the proliferation and apoptosis of two different human cancer cells; MCF-7, an estrogen receptor (ER)-positive human breast cancer cell, and MDA-MB-231, a triple negative human breast cancer cell. Lupiwighteone treatment decreased the viability of MCF-7 and MDA-MB-231 cells. Lupiwighteone treatment resulted in apoptotic cell death in breast cancer cells, which was characterized by DNA fragmentation, accumulation of apoptotic cells, and nuclear condensation. We also showed that treatment with lupiwighteone induced caspase-dependent apoptosis (up-regulation of caspase-3, -7, -8, -9, PARP, and Bax or down-regulation of Bid, Bcl-2), induction of caspase-independent apoptosis (up-regulation of AIF and Endo G on cytosol), and inhibition of the PI3K/Akt/mTOR signaling pathway (down-regulation of PI3K, p-Akt, and p-mTOR) in both MCF-7 and MDA-MB-231 cells. These results suggest that lupiwighteone induces caspase-dependent and -independent apoptosis in both breast cancer cell lines via inhibiting PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Yeong-Seon Won
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea
| | - Kwon-Il Seo
- Department of Biotechnology, Dong-A University, Busan, 49315, Republic of Korea.
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16
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The Role of Herbal Bioactive Components in Mitochondria Function and Cancer Therapy. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:3868354. [PMID: 31308852 PMCID: PMC6594309 DOI: 10.1155/2019/3868354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/27/2019] [Accepted: 06/02/2019] [Indexed: 12/13/2022]
Abstract
Mitochondria are highly dynamic double-membrane organelles which play a well-recognized role in ATP production, calcium homeostasis, oxidation-reduction (redox) status, apoptotic cell death, and inflammation. Dysfunction of mitochondria has long been observed in a number of human diseases, including cancer. Targeting mitochondria metabolism in tumors as a cancer therapeutic strategy has attracted much attention for researchers in recent years due to the essential role of mitochondria in cancer cell growth, apoptosis, and progression. On the other hand, a series of studies have indicated that traditional medicinal herbs, including traditional Chinese medicines (TCM), exert their potential anticancer effects as an effective adjunct treatment for alleviating the systemic side effects of conventional cancer therapies, for reducing the risk of recurrence and cancer mortality and for improving the quality of patients' life. An amazing feature of these structurally diverse bioactive components is that majority of them target mitochondria to provoke cancer cell-specific death program. The aim of this review is to summarize the in vitro and in vivo studies about the role of these herbs, especially their bioactive compounds in the modulation of the disturbed mitochondrial function for cancer therapy.
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17
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Wu D, Liu Z, Li J, Zhang Q, Zhong P, Teng T, Chen M, Xie Z, Ji A, Li Y. Epigallocatechin-3-gallate inhibits the growth and increases the apoptosis of human thyroid carcinoma cells through suppression of EGFR/RAS/RAF/MEK/ERK signaling pathway. Cancer Cell Int 2019; 19:43. [PMID: 30858760 PMCID: PMC6394055 DOI: 10.1186/s12935-019-0762-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/18/2019] [Indexed: 12/12/2022] Open
Abstract
Background Thyroid cancer is the most common type of endocrine malignancy and the incidence rate is rapidly increasing worldwide. Epigallocatechin-3-gallate (EGCG) could suppress cancer growth and induce apoptosis in many types of cancer cells. However, the mechanism of action of EGCG on the growth of human thyroid carcinoma cells has not been fully illuminated. Methods Cell proliferation and viability were detected by EdU and MTS assays. Cell cycle distribution was measured by flow cytometry. Migration and invasion were evaluated by scratch and transwell assays. Apoptotic levels were detected by TUNEL staining and western blotting. The protein levels of EGFR/RAS/RAF/MEK/ERK signaling pathway were detected by western blotting. The in vivo results were determined by tumor xenografts in nude mice. The in vivo proliferation, tumor microvessel density, and apoptosis were detected by immunohistochemistry. Results EGCG inhibited the proliferation, viability, and cell cycle progression in human thyroid carcinoma cells. EGCG decreased the migration and invasion, but increased the apoptosis of human thyroid carcinoma cells. EGCG reduced the protein levels of phospho (p)-epidermal growth factor receptor (EGFR), H-RAS, p-RAF, p-MEK1/2, and p-extracellular signal-regulated protein kinase 1/2 (ERK1/2) in human thyroid carcinoma cells. EGCG inhibited the growth of human thyroid carcinoma xenografts by inducing apoptosis and down-regulating angiogenesis. Conclusions EGCG could reduce the growth and increase the apoptosis of human thyroid carcinoma cells through suppressing the EGFR/RAS/RAF/MEK/ERK signaling pathway. EGCG can be developed as an effective therapeutic agent for the treatment of thyroid cancer.
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Affiliation(s)
- Dongdong Wu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhengguo Liu
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Jianmei Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Qianqian Zhang
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Peiyu Zhong
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Tieshan Teng
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Mingliang Chen
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Zhongwen Xie
- 2State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036 Anhui China
| | - Ailing Ji
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
| | - Yanzhang Li
- 1School of Basic Medical Sciences, Henan University College of Medicine, Kaifeng, 475004 Henan China.,3Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, 475004 Henan China
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18
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Gao Y, Yin J, Tu Y, Chen YC. Theaflavin-3,3'-Digallate Suppresses Human Ovarian Carcinoma OVCAR-3 Cells by Regulating the Checkpoint Kinase 2 and p27 kip1 Pathways. Molecules 2019; 24:molecules24040673. [PMID: 30769778 PMCID: PMC6412557 DOI: 10.3390/molecules24040673] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/09/2019] [Accepted: 02/12/2019] [Indexed: 12/26/2022] Open
Abstract
Theaflavin-3,3′-digallate (TF3) is a unique polyphenol in black tea. Epidemiological studies have proved that black tea consumption decreases the incidence rate of ovarian cancer. Our former research demonstrated that TF3 inhibited human ovarian cancer cells. Nevertheless, the roles of checkpoint kinase 2 (Chk2) and p27 kip1 (p27) in TF3-mediated inhibition of human ovarian cancer cells have not yet been investigated. In the current study, TF3 enhanced the phosphorylation of Chk2 to modulate the ratio of pro/anti-apoptotic Bcl-2 family proteins to initiate intrinsic apoptosis in a p53-independent manner and increased the expression of death receptors to activate extrinsic apoptosis in OVCAR-3 human ovarian carcinoma cells. In addition, TF3 up-regulated the expression of p27 to induce G0/G1 cell cycle arrest in OVCAR-3 cells. Our study indicated that Chk2 and p27 were vital anticancer targets of TF3 and provided more evidence that TF3 might be a potent agent to be applied as adjuvant treatment for ovarian cancer.
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Affiliation(s)
- Ying Gao
- Tea Research Institute Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Hangzhou 310008, China.
| | - Junfeng Yin
- Tea Research Institute Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Hangzhou 310008, China.
| | - Youying Tu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China.
| | - Yi Charlie Chen
- College of Science, Technology and Mathematics, Alderson Broaddus University, Philippi, WV 26416, USA.
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19
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Tsai CY, Chen CY, Chiou YH, Shyu HW, Lin KH, Chou MC, Huang MH, Wang YF. Epigallocatechin-3-Gallate Suppresses Human Herpesvirus 8 Replication and Induces ROS Leading to Apoptosis and Autophagy in Primary Effusion Lymphoma Cells. Int J Mol Sci 2017; 19:ijms19010016. [PMID: 29267216 PMCID: PMC5795967 DOI: 10.3390/ijms19010016] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 12/02/2022] Open
Abstract
Epigallocatechin-3-gallate (EGCG), the major constituent of green tea, has been shown to induce cell death in cancer cells. Primary effusion lymphoma (PEL) is an aggressive neoplasm caused by human herpesvirus 8 (HHV8). In this study, we examined the role of EGCG on PEL cells in cell death and HHV8 replication. We performed trypan blue exclusion assay to assess the cell viability of PEL cells, flow cytometry analysis to examine the cell cycle distribution and reactive oxygen species (ROS) generation, caspase-3 activity to assay apoptosis, acridine orange staining to determine autophagy, and immunoblotting to detect the protein levels involved in apoptosis and autophagy as well as mitogen activated protein kinases (MAPKs) activation upon EGCG treatment. The expression of the HHV8 lytic gene was determined by luciferase reporter assay and reverse transcription-PCR, and viral progeny production was determined by PCR. Results revealed that EGCG induced cell death and ROS generation in PEL cells in a dose-dependent manner. N-acetylcysteine (NAC) inhibited the EGCG-induced ROS and rescued the cell from EGCG-induced cell death. Even though EGCG induced ROS generation in PEL cells, it reduced the production of progeny virus from PEL cells without causing HHV8 reactivation. These results suggest that EGCG may represent a novel strategy for the treatment of HHV8 infection and HHV8-associated lymphomas.
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Affiliation(s)
- Ching-Yi Tsai
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Chang-Yu Chen
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Yee-Hsuan Chiou
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 83102, Taiwan.
| | - Huey-Wen Shyu
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Kuan-Hua Lin
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Miao-Chen Chou
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Mei-Han Huang
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Yi-Fen Wang
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
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20
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Moradzadeh M, Roustazadeh A, Tabarraei A, Erfanian S, Sahebkar A. Epigallocatechin-3-gallate enhances differentiation of acute promyelocytic leukemia cells via inhibition of PML-RARα and HDAC1. Phytother Res 2017; 32:471-479. [PMID: 29193405 DOI: 10.1002/ptr.5990] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/24/2017] [Accepted: 10/25/2017] [Indexed: 12/14/2022]
Abstract
The use of all-trans retinoic acid (ATRA) has dramatically improved the treatment and survival rate of patients with acute promyelocytic leukemia (APL). However, toxicity and resistance to this drug are major problems in the treatment of APL with ATRA. Earlier studies have suggested that the green tea polyphenol epigallocatechin gallate (EGCG) induces cell death in hematopoietic neoplasms without adversely affecting normal cells. In the present study, the potential therapeutic effect of EGCG in APL and the underlying molecular mechanisms were investigated. EGCG (100 μM) significantly inhibited proliferation and induced apoptosis in HL-60 and NB4 cells. This effect was associated with decreased expressions of multidrug resistance proteins ABCB1, and ABCC1, whereas the expressions of pro-apoptotic genes CASP3, CASP8, p21, and Bax/Bcl-2 ratio were significantly increased. EGCG, at 25 μM concentration, induced differentiation of leukemic cells towards granulocytic pattern in a similar manner to that observed for ATRA (1 μM). Furthermore, EGCG suppressed the expression of clinical marker PML/RARα in NB4 cells and reduced the expression of HDAC1 in leukemic cells. In conclusion, the results suggested that EGCG can be considered as a potential treatment for APL.
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Affiliation(s)
- Maliheh Moradzadeh
- Golestan Rheumatology Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Abazar Roustazadeh
- Research Center for Non-Communicable Diseases and Biochemistry Department, Department of Advanced Medical Sciences and Technologies, School of Medicine, Jahrom University of Medical Sciences (JUMS), Jahrom, Iran
| | - Alijan Tabarraei
- Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Saiedeh Erfanian
- Research Center for Non-Communicable Diseases and Biochemistry Department, Department of Advanced Medical Sciences and Technologies, School of Medicine, Jahrom University of Medical Sciences (JUMS), Jahrom, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Liu L, Zuo J, Wang G. Epigallocatechin-3-gallate suppresses cell proliferation and promotes apoptosis in Ec9706 and Eca109 esophageal carcinoma cells. Oncol Lett 2017; 14:4391-4395. [PMID: 28943954 DOI: 10.3892/ol.2017.6712] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 03/21/2017] [Indexed: 01/23/2023] Open
Abstract
Epigallocatechin-3-gallate (EGCG) is a component of green tea with anticancer effects that have been demonstrated in multiple types of cancer, but few reports exist concerning its effect in esophageal squamous cell carcinoma cells. The present study investigated apoptosis induced by EGCG treatment and the underlying molecular mechanisms in Eca109 and Ec9706 human esophageal squamous cell carcinoma cells. The apoptosis rate following treatment with various concentration of EGCG for 24 h was detected by flow cytometry. The effect of EGCG on esophageal cancer cell viability was detected via MTT assay. Mitochondrial membrane potential and caspase-3 protein expression was detected in Eca109 and Ec9706 cells following treatment with EGCG by flow cytometry. The telomerase activity of Eca109 and Ec9706 cells following treatment with EGCG was assayed using the polymerase chain reaction-telomeric repeat amplification protocol (PCR-TRAP) argentation method. EGCG was demonstrated to inhibit the viability of Eca109 and Ec9706 cells in a dose-and time-dependent manner. The flow cytometry results revealed that EGCG treatment induced apoptosis, decreased the mitochondrial membrane potential and increased caspase-3 protein expression levels. PCR-TRAP argentation analysis revealed that EGCG inhibited telomerase activity. The results of the present study suggested that EGCG functions as an antitumor agent in esophageal cancer cells. The induction of apoptosis may be a viable method for treating esophageal cancer. It is possible to induce apoptosis by modulating the expression level of telomerase activity, mitochondrial membrane potential and caspase-3 protein expression levels.
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Affiliation(s)
- Liang Liu
- Department of Flow Cytometry Analysis, Tumor Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Jing Zuo
- Department of Flow Cytometry Analysis, Tumor Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
| | - Guangda Wang
- Department of Flow Cytometry Analysis, Tumor Institute, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050011, P.R. China
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Ying X, Wang Y, Xu H, Li X, Yan H, Tang H, Wen C, Li Y. The construction of the multifunctional targeting ursolic acids liposomes and its apoptosis effects to C6 glioma stem cells. Oncotarget 2017; 8:64129-64142. [PMID: 28969057 PMCID: PMC5609989 DOI: 10.18632/oncotarget.19784] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 06/20/2017] [Indexed: 12/11/2022] Open
Abstract
Brain gliomas, one of the most fatal tumors to human, severely threat the health and life of human. They are capable of extremely strong invasion ability. And invasive glioma cells could rapidly penetrate into normal brain tissues and break them. We prepared a kind of functional liposomes, which could be transported acrossing the blood-brain barrier (BBB) and afterwards induce the apoptosis of glioma stem cells. In this research, we chose ursolic acids (UA) as an anti-cancer drug to inhibit the growth of C6 glioma cells, while epigallocatechin 3-gallate(EGCG) as the agent that could induce the apoptosis of C6 glioma stem cells. With the targeting ability of MAN, the liposomes could be delivered through the BBB and finally were concentrated on the brain gliomas. Cell experiments in vitro demonstrated that the functional liposomes were able to significantly enhance the anti-cancer effects of the drugs due to promoting the apoptosis and endocytosis effects of C6 glioma cells and C6 glioma stem cells at the same time. Furthermore, the evaluations through animal models showed that the drugs could obviously prolong the survival period of brain glioma-bearing mice and inhibit the tumor growth. Consequently, multifunctional targeting ursolic acids liposomes could potentially improve the therapeutic effects on C6 glioma cells and C6 glioma stem cells.
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Affiliation(s)
- Xue Ying
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Yahua Wang
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Haolun Xu
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Xia Li
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Helu Yan
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Hui Tang
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Chen Wen
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China
| | - Yingchun Li
- School of Pharmaceutical Sciences, Shihezi University, Shihezi 832002, People's Republic of China.,School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, People's Republic of China
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The Inhibitory Effect of Epigallocatechin Gallate on the Viability of T Lymphoblastic Leukemia Cells is Associated with Increase of Caspase-3 Level and Fas Expression. Indian J Hematol Blood Transfus 2017; 34:253-260. [PMID: 29622866 DOI: 10.1007/s12288-017-0854-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/25/2017] [Indexed: 11/27/2022] Open
Abstract
Acute lymphoblastic leukemia is the most prevalent cancer in children. Novel components to help struggle aggressive malignancies and overcome some side effects of conventional treatments could be a promising strategy. Epigallocatechingallate (EGCG), have attracted the attention of scientists for prevention or treatment of some cancers. Jurkat cells were incubated with the different concentrations of EGCG (30-100 µm) for 24, 48, and 72 h and cell viability was investigated using MTS test. Apoptosis and the level of caspase 3 alterations were evaluated using flowcytometry and expression of Fas by Real Time PCR. EGCG decreased viability of cells with an inhibition concentration (IC50) of 82.8 ± 3.1, 68.8 ± 4 and 59.7 ± 4.8 μM in 24,48 and 72 h. 50, 70 and 100 µM concentrations of EGCG induced apoptosis in about 31, 40 and 71% of the cells, respectively. The mean value of caspase 3 positive cells in the presence of 50, 70 and 100 µm concentrations of EGCG was 19.3 ± 2.9, 29.5 ± 3.1 and 61.2 ± 3.4 respectively compared to 7.8 ± 1.1 in control with a significant difference at 100 µm concentration. Treatment with EGCG for 48 h enhanced the expression of Fas reaching to a significant level at 100 µM concentration. EGCG is effective in decrease cell viability, apoptosis induction and enhancement of caspase 3 and Fas expression level in jurkat cells. A comprehensive understanding of molecular events and pharmacokinetics of the component and experiments in animal models are required for dose determination and its interaction with other components of combination chemotherapy.
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Ma WK, Li H, Dong CL, He X, Guo CR, Zhang CF, Yu CH, Wang CZ, Yuan CS. Palmatine from Mahonia bealei attenuates gut tumorigenesis in ApcMin/+ mice via inhibition of inflammatory cytokines. Mol Med Rep 2016; 14:491-8. [PMID: 27175745 PMCID: PMC4918606 DOI: 10.3892/mmr.2016.5285] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 02/12/2016] [Indexed: 01/05/2023] Open
Abstract
Mahonia bealei is a Chinese folk medicine used to treat various ailments, in particular gastrointestinal inflammation‑related illnesses, and palmatine is one of its active constituents. In this study, ApcMin/+ mice, a genetically engineered model, were used to investigate the effects of palmatine on the initiation and progression of gut inflammation and tumorigenesis enhanced by a high‑fat diet. The in vitro antiproliferation and anti‑inflammation effects of palmatine were evaluated on HT‑29 and SW‑480 human colorectal cancer cell lines. The concentration‑related antiproliferative effects of palmatine on both cell lines (P<0.01) were observed. Palmatine significantly inhibited lipopolysaccharide‑induced increase in cytokine interleukin (IL)‑8 levels in the HT‑29 cells (P<0.01). In the in vivo studies with ApcMin/+ mice, after 10 or 20 mg/kg/day oral palmatine treatment, tumor numbers were significantly reduced in the small intestine and colon in a dose‑dependent manner (P<0.01 compared with the model group). The results were supported by tumor distribution data, body weight changes and organ index. The effect on survival was also dose‑dependent. Both the low‑ and high‑dose palmatine treatments significantly increased the life span of the mice (P<0.01). The gut histology from the model group showed a prominent adenomatous change along with inflammatory lesions. With palmatine treatment, however, the dysplastic changes were greatly reduced in the small intestine and colon tissue. Reverse transcription‑quantitative polymerase chain reaction analysis of interleukin (IL)‑1α, IL1‑β, IL‑8, granulocyte‑colony stimulating factor and granulocyte macrophage colony‑stimulating factor in the gut tissue showed that these inflammatory cytokines were reduced significantly following treatment (all P<0.01); serum cytokine levels were also decreased. Data suggests that palmatine has a clinical value in colorectal cancer therapeutics, and this action is likely linked to the inhibition of inflammatory cytokines.
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Affiliation(s)
- Wei-Kun Ma
- Teaching and Research Section of Traditional Chinese Pharmaceutics, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Hui Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Cui-Lan Dong
- Department of Traditional Chinese Medicine, People's Hospital of Zhangqiu, Zhangqiu, Jinan, Shandong 250200, P.R. China
| | - Xin He
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210000, P.R. China
| | - Chang-Run Guo
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Chun-Feng Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Chun-Hao Yu
- Tang Center of Herbal Medicine Research and Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Chong-Zhi Wang
- Tang Center of Herbal Medicine Research and Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Chun-Su Yuan
- Tang Center of Herbal Medicine Research and Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
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LI MIN, LI JINGJING, GU QIHUA, AN JIAN, CAO LIMING, YANG HUAPING, HU CHENGPING. EGCG induces lung cancer A549 cell apoptosis by regulating Ku70 acetylation. Oncol Rep 2016; 35:2339-47. [DOI: 10.3892/or.2016.4587] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 12/12/2015] [Indexed: 11/06/2022] Open
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26
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Jia DP, Wang S, Zhang BC, Fang F. Paraptosis triggers mitochondrial pathway-mediated apoptosis in Alzheimer's disease. Exp Ther Med 2015; 10:804-808. [PMID: 26622397 DOI: 10.3892/etm.2015.2531] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Accepted: 05/08/2015] [Indexed: 11/05/2022] Open
Abstract
In previous years, increasing evidence has indicated that paraptosis and mitochondrial-mediated apoptosis may be associated with Alzheimer's disease (AD). However, the association between paraptosis and mitochondrial-mediated apoptosis, and the pathological processes underlying AD, remain elusive. In the present study, the β-amyloid precursor protein gene, and the gene mutations PS1M146L and L286V, were transfected to an SH-SY5Y cell line to establish an AD cell model. Subsequently, an MTT assay was used to examine the cell viability of the AD cell model, while a TUNEL assay was employed to observe the number of positively stained apoptotic cells. Cytoplasmic vacuolization was examined using light microscopy and images were photographed. Furthermore, western blot analysis was utilized to detect the expression of golden biomarkers of the mitochondrial pathway, including Bcl-2 and Bax. The paraptosis inhibitor, cycloheximide, was selected to treat the AD model cells in order to observe the association between paraptosis and mitochondrial-mediated apoptosis. The results indicated that the decrease in the cell viability of the AD cells was initiated at 24 h, as compared with the normal cells (P<0.05). TUNEL-positive stained cells were observed at 48 h, which was later compared with the cell death initiation. In addition, examination of cytoplasmic vacuolization using microscopy indicated that there were a small number of paraptosis cells present at 24 h. The expression levels of Bcl-2 was significantly decreased, while Bax was significantly increased at 48 h. Furthermore, cycloheximide treatment was demonstrated to significantly increase Bcl-2 expression, while decreasing Bax expression (P>0.05). In conclusion, the occurrence of paraptosis was demonstrated in the early pathological stages of AD, which may subsequently damage the mitochondria and trigger mitochondrial pathway-mediated apoptosis. Thus, paraptosis may trigger programmed cell death directly, or indirectly through the regulation of Bcl-2 and Bax protein expression.
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Affiliation(s)
- Dong-Pei Jia
- Department of Neurological Rehabilitation, Nanyang City Center Hospital, Nanyang, Henan 473003, P.R. China
| | - Song Wang
- Department of Neurological Rehabilitation, Nanyang City Center Hospital, Nanyang, Henan 473003, P.R. China
| | - Bao-Chao Zhang
- Department of Neurological Rehabilitation, Nanyang City Center Hospital, Nanyang, Henan 473003, P.R. China
| | - Fang Fang
- Department of Neurological Rehabilitation, Nanyang City Center Hospital, Nanyang, Henan 473003, P.R. China
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