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Keshavarz Shahbaz S, Koushki K, Izadi O, Penson PE, Sukhorukov VN, Kesharwani P, Sahebkar A. Advancements in curcumin-loaded PLGA nanoparticle delivery systems: progressive strategies in cancer therapy. J Drug Target 2024:1-26. [PMID: 39106154 DOI: 10.1080/1061186x.2024.2389892] [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: 04/23/2024] [Revised: 07/29/2024] [Accepted: 07/31/2024] [Indexed: 08/09/2024]
Abstract
Cancer is a leading cause of death worldwide, and imposes a substantial socioeconomic burden with little impact especially on aggressive types of cancer. Conventional therapies have many serious side effects including generalised systemic toxicity which limits their long-term use. Tumour resistance and recurrence is another main problem associated with conventional therapy. Purified or extracted natural products have been investigated as cost-effective cancer chemoprotective agents with the potential to reverse or delaying carcinogenesis. Curcumin (CUR) as a natural polyphenolic component, exhibits many pharmacological activities such as anti-cancer, anti-inflammatory, anti-microbial, activity against neurodegenerative diseases including Alzheimer, antidiabetic activities (type II diabetes), anticoagulant properties, wound healing effects in both preclinical and clinical studies. Despite these effective protective properties, CUR has several limitations, including poor aqueous solubility, low bioavailability, chemical instability, rapid metabolism and a short half-life time. To overcome the pharmaceutical problems associated with free CUR, novel nanomedicine strategies (including polymeric nanoparticles (NPs) such as poly (lactic-co-glycolic acid) (PLGA) NPs have been developed. These formulations have the potential to improve the therapeutic efficacy of curcuminoids. In this review, we comprehensively summarise and discuss recent in vitro and in vivo studies to explore the pharmaceutical significance and clinical benefits of PLGA-NPs delivery system to improve the efficacy of CUR in the treatment of cancer.
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Affiliation(s)
- Sanaz Keshavarz Shahbaz
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran
- USERN Office, Qazvin University of Medical Science, Qazvin, Iran
| | - Khadijeh Koushki
- Department of Neurosurgery, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Omid Izadi
- Department of Industrial Engineering, ACECR Institute of Higher Education Kermanshah, Kermanshah, Iran
| | - Peter E Penson
- Clinical Pharmacy and Therapeutics Research Group, School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
- Liverpool Centre for Cardiovascular Science, Liverpool, UK
| | | | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Amirhossein Sahebkar
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Biotechnology Research Centre, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Kumar A. Human papillomavirus-16 E6-positive cervical cancer attenuated by potent 2-(4-biphenylyl)-N-(1-ethyl-4-piperidinyl) acetamide second-generation analogs with improved binding affinity. Biotechnol Appl Biochem 2024. [PMID: 39039663 DOI: 10.1002/bab.2639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 07/06/2024] [Indexed: 07/24/2024]
Abstract
Human papillomavirus (HPV) infection, particularly HPV16, is a major contributor to the development of cervical cancer. Given the urgent need for novel therapeutic strategies targeting HPV-associated cancers, this study focuses on characterizing second-generation analogs of a lead compound, as a potential inhibitor of HPV16-E6. Protein-ligand docking, Gibbs binding free energy estimation, and molecular dynamics simulations were conducted. HPV16-infected SiHa and CaSki cell lines were used. MTT (3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide) assay for proliferation and flow cytometry for target inhibition and apoptosis were employed. Computational and cell proliferation analyses revealed that modifications to E6-855, particularly in the piperidinyl group, enhanced binding affinities against HPV16-E6, with E6-272 demonstrating superior binding properties. Molecular dynamics simulations confirmed the stable binding of E6-272 to HPV16-E6, supported by favorable binding energy estimates. E6-272 inhibited the proliferation of SiHa and CaSki cells with GI50 values of 32.56 and 62.09 nM, respectively. The compound reduced HPV16-E6-positive population, while inducing the early and late phase apoptosis in these cells. Structural alterations at the piperidinyl group of E6-855 identified E6-272 as a promising inhibitor of HPV16-E6 with improved efficacy against HPV16-E6. Further experimental validation of E6-272 and its analogs warrant to advance its clinical utility in combating HPV-associated cancers.
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Affiliation(s)
- Ashish Kumar
- Department of Microbiology & Clinical Parasitology, College of Medicine, King Khalid University, Abha, Saudi Arabia
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Duan Y, Du Y, Yi Z, Wang Z, Pei X, Wei X, Li M. Systematic Metabolic Engineering for the Production of Azaphilones in Monascus purpureus HJ11. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1589-1600. [PMID: 35085438 DOI: 10.1021/acs.jafc.1c07588] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fungal azaphilones have attracted considerable interest as they exhibit great potential in food and pharmacological industries. However, there is a severe bottleneck in the low production in wild strains and the ability to genetically engineer azaphilone-producing fungi. Using Monascus azaphilones (MAs) as an example, we demonstrate a systematic metabolic engineering strategy for improving the production of MAs. In this study, Monascus purpureus HJ11 was systematically engineered through a combination of promoter engineering, gene knockout, rate-limiting enzyme overexpression, repression of the competing pathway, enzyme engineering, and metabolic rebalance. The maximum yield and titer of MAs successfully increased to 906 mg/g dry cell weight (DCW) and 14.6 g/L, respectively, 2.6 and 3.7 times higher than those reported in the literature. Our successful model not only offers a practical and efficient way to improve the azaphilone production but also sheds light on the potential of systematic metabolic engineering in nonmodel fungi as a chassis for the production of high-value chemicals.
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Affiliation(s)
- Yali Duan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Yun Du
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Zhiqiang Yi
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Zhe Wang
- Polytechnic Institute, Zhejiang University, Hangzhou 310015, China
| | - Xiaolin Pei
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310012, China
| | - Xuetuan Wei
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Mu Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
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Yap J, Slade D, Goddard H, Dawson C, Ganesan R, Velangi S, Sahu B, Kaur B, Hughes A, Luesley D. Sinecatechins ointment as a potential novel treatment for usual type vulval intraepithelial neoplasia: a single-centre double-blind randomised control study. BJOG 2021; 128:1047-1055. [PMID: 33075197 DOI: 10.1111/1471-0528.16574] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2020] [Indexed: 01/20/2023]
Abstract
OBJECTIVE To compare the safety and efficacy of 10% sinecatechins (Veregen® ) ointment against placebo in the treatment of usual type vulvar intraepithelial neoplasia (uVIN). DESIGN A Phase II double-blind randomised control trial. SETTING A tertiary gynaecological oncology referral centre. POPULATION All women diagnosed with primary and recurrent uVIN. METHODS Eligible patients were randomised 1:1 to receive either sinecatechins or placebo ointment (applied three times daily for 16 weeks) and were followed up at 2, 4, 8, 16, 32 and 52 weeks. MAIN OUTCOME MEASURES The primary outcome measure, recorded at 16 and 32 weeks, was histological response (HR). Secondary outcome measures included clinical (CR) response, toxicity, quality of life and pain scores. RESULTS There was no observed difference in HR between the two arms. However, of the 26 patients who were randomised, all 13 patients who received sinecatechins showed either complete (n = 5) or partial (n = 8) CR, when best CR was evaluated. In placebo group, three patients had complete CR, two had partial CR, six had stable disease and two were lost to follow up. Patients in the sinecatechins group showed a statistically significant improvement in best observed CR as compared with the placebo group (P = 0.002). There was no difference in toxicity reported in either group. CONCLUSION Although we did not observe a difference in HR between the two treatment arms, we found that 10% sinecatechins application is safe and shows promise in inducing clinical resolution of uVIN lesions and symptom improvement, thus warranting further investigation in a larger multicentre study. TWEETABLE ABSTRACT A randomised control study indicating that sinecatechins ointment may be a novel treatment for uVIN.
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Affiliation(s)
- J Yap
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Pan Birmingham Gynaecological Cancer Centre, City Hospital, Birmingham, UK
| | - D Slade
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - H Goddard
- Pan Birmingham Gynaecological Cancer Centre, City Hospital, Birmingham, UK
| | - C Dawson
- Department of Microbiology & Infection, Warwick Medical School, University of Warwick, Coventry, UK
| | - R Ganesan
- Department of Histopathology, Birmingham Women's NHS Foundation Trust, Birmingham, UK
| | - S Velangi
- Department of Dermatology, Queen Elizabeth Hospital, Birmingham, UK
| | - B Sahu
- Department of Obstetrics and Gynaecology, The Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK
| | - B Kaur
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - A Hughes
- Cancer Research UK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - D Luesley
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
- Pan Birmingham Gynaecological Cancer Centre, City Hospital, Birmingham, UK
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Identification of potential binding pocket on viral oncoprotein HPV16 E6: a promising anti-cancer target for small molecule drug discovery. BMC Mol Cell Biol 2019; 20:30. [PMID: 31387520 PMCID: PMC6685234 DOI: 10.1186/s12860-019-0214-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 07/23/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Several human cancers, especially cervical cancer are caused by the infection of high risk strains of human papillomaviruses (HPV), notably HPV16. It is implicated that the oncoprotein E6 expressed from HPV, is inhibiting the apoptotic pathway by binding to adaptor molecule FADD (Fas-associated death domain). Inhibiting E6 interactions with FADD could provide a promising treatment for cervical cancer. There are few small molecules reported to inhibit such interactions. However, the FADD binding site information on the HPV E6 is not currently available. This binding site information may provide an opportunity to design new small molecule inhibitors to treat E6 mediated cancers. In this study we report the possible binding pocket on HPV16 E6 oncoprotein by using activity data of reported inhibitors through a stepwise molecular modeling approach. RESULTS Blind docking and removing duplicates followed by visual inspection to determine ligand-receptor interactions provided 68 possible binding sites on the E6 protein. Individual docking of all known inhibitors lead to the identification of 28 pockets having some kind of correlation with their activity data. It was also observed that several of these pockets overlapped with each other, having some amino acids in common. Amino acids Leu50 and Cys51 were identified as key E6 residues for high affinity ligand binding which are seen in most of these pockets. In most cases, ligands demonstrated a hydrogen bond interaction with Cys51. Ala61, Arg131 and Gln107 were also frequently observed showing interactions among these pockets. A few amino acids unique to each ligand were also identified representing additional interactions at the receptor site. CONCLUSIONS After determining receptor-ligand interactions between E6 oncoprotein and the six known inhibitors, the amino acids Cys51, Leu50, Arg102, Arg131, Leu67, Val62, and Gln107 were identified to have importance in E6 inhibition. It was generally observed that Leu50 and Cys51 are necessary for high binding affinity with Cys51 being essential for hydrogen bonding. This study identified a potential binding pocket for the E6 inhibitors. Identification of the ligand binding pocket helps to design novel inhibitors of HPV16 E6 oncoprotein as a promising treatment for cervical cancer.
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Lindsay C, Kostiuk M, Conrad D, O’Connell DA, Harris J, Seikaly H, Biron VL. Antitumour effects of metformin and curcumin in human papillomavirus positive and negative head and neck cancer cells. Mol Carcinog 2019; 58:1946-1959. [DOI: 10.1002/mc.23087] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/02/2019] [Accepted: 07/08/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Cameron Lindsay
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Otolaryngology‐Head and Neck Surgery Research Laboratory of AlbertaUniversity of Alberta Edmonton Alberta Canada
| | - Morris Kostiuk
- Otolaryngology‐Head and Neck Surgery Research Laboratory of AlbertaUniversity of Alberta Edmonton Alberta Canada
| | - Dustin Conrad
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Daniel A. O’Connell
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Jeffrey Harris
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
| | - Hadi Seikaly
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Otolaryngology‐Head and Neck Surgery Research Laboratory of AlbertaUniversity of Alberta Edmonton Alberta Canada
| | - Vincent L. Biron
- Division of Otolaryngology‐Head and Neck Surgery, Department of SurgeryUniversity of Alberta Edmonton Alberta Canada
- Otolaryngology‐Head and Neck Surgery Research Laboratory of AlbertaUniversity of Alberta Edmonton Alberta Canada
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Jia XY, Xue YR, Zhang CX, Luo Q, Wu Y. Highly sensitive detection of the human papillomavirus E6 protein by DNA-protected silver nanoclusters and the intrinsic mechanism. NEW J CHEM 2019. [DOI: 10.1039/c9nj03241j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present study not only supplies a good approach for the early diagnosis of HPV-related cancer but also enriches the biological application of AgNCs–dsDNA.
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Affiliation(s)
- Xiang-Yu Jia
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- China
| | - Ya-Rong Xue
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- China
| | - Chun-Xia Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- China
| | - Quan Luo
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- China
| | - Yuqing Wu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- Jilin University
- Changchun 130012
- China
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Natural Compound Modulates the Cervical Cancer Microenvironment-A Pharmacophore Guided Molecular Modelling Approaches. J Clin Med 2018; 7:jcm7120551. [PMID: 30558287 PMCID: PMC6306730 DOI: 10.3390/jcm7120551] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/11/2018] [Accepted: 12/11/2018] [Indexed: 02/06/2023] Open
Abstract
Cervical cancer is regarded as one of the major burdens noticed in women next to breast cancer. Although, human papilloma viruses (HPVs) are regarded as the principal causative agents, they require certain other factors such as oestrogen hormone to induce cervical cancer. Aromatase is an enzyme that converts androgens into oestrogens and hindering this enzyme could subsequently hamper the formation of oestrogen thereby alleviating the disease. Accordingly, in the current investigation, a structure based pharmacophore was generated considering two proteins bearing the Protein Data Bank (PDB) codes 3EQM (pharm 1) and 3S7S (pharm 2), respectively. The two models were employed as the 3D query to screen the in-house built natural compounds database. The obtained 51 compounds were escalated to molecular docking studies to decipher on the binding affinities and to predict the quintessential binding modes which were affirmed by molecular dynamics (MD) simulations. The compound has induced dose-dependent down regulation of PP2B, Nitric oxide synthase-2 (NOS2), and Interleukin 6 (IL-6) genes in the HeLa cells and has modulated the expression of apoptotic genes such as Bax, Bcl2, and caspases-3 at different concentrations. These results guide us to comprehend that the identified aromatase inhibitor was effective against the cervical cancer cells and additionally could server as scaffolds in designing new drugs.
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Liu Z, Teng L, Gao L, Wang H, Su Y, Li J. The role of eukaryotic translation initiation factor 5A-1 (eIF5A-1) gene in HPV 16 E6 induces cell growth in human cervical squamous carcinoma cells. Biochem Biophys Res Commun 2018; 504:6-12. [PMID: 30170728 DOI: 10.1016/j.bbrc.2018.08.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 08/02/2018] [Indexed: 12/23/2022]
Abstract
Human Papillomavirus (HPV) is considered as the major risk factor for the development and progression of cervical cancer. The high expression of HPV 16 E6 may be the causative factor for induction and maintenance of the transformed phenotype. These oncoproteins would interact with several intracellular proteins, such as eukaryotic translation initiation factor 5A-1 (eIF5A-1) that is essential for proliferation of eukaryotic cells. Our study explored the expression level of HPV 16 E6 and eIF5A-1 in human cervical squamous carcinoma samples and the adjacent non-cancerous cervix samples. Both C33a cells and SiHa cells transfected with a vector encoding HPV 16 E6 resulted in increase of eIF5A-1 expression level and enhancement of viability, migration and proliferation of these cells, furthermore, these effects in both C33a cells and SiHa cells could be abrogated by treatment with eIF5A-1 small-interfering RNA (siRNA) or the specific inhibitors ciclopirox (CPX) that was used to inhibit the function of eIF5A-1 via blocking the main enzymes deoxyhypusine hydroxylase (DOHH). Our results support that the silencing the eIF5A-1 gene or blocking the DOHH could induce the apoptosis of HPV 16 E6-infected cervical carcinoma cells. Thus might provide a new approach to preventing and treating cervical cancer.
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Affiliation(s)
- Zhu Liu
- Department of Clinical Laboratory, Traditional Chinese Medical Hospital of Huangdao District, Qingdao, China
| | - Lichen Teng
- Department of Clinical Laboratory, The Affiliated Cancer Hospital, Harbin Medical University, Harbin, China
| | - Lingjuan Gao
- Department of Gynecology, The Affiliated Obstetrics and Gynecology Hospital with Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital North Branch, Nanjing, China
| | - Huiyan Wang
- Department of Clinical Laboratory, The Affiliated Cancer Hospital, Harbin Medical University, Harbin, China
| | - Yajuan Su
- Department of Clinical Laboratory, The Affiliated Cancer Hospital, Harbin Medical University, Harbin, China.
| | - Jingbo Li
- Department of Gynecology, The Affiliated Obstetrics and Gynecology Hospital with Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital North Branch, Nanjing, China.
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Nakano S, Megro SI, Hase T, Suzuki T, Isemura M, Nakamura Y, Ito S. Computational Molecular Docking and X-ray Crystallographic Studies of Catechins in New Drug Design Strategies. Molecules 2018; 23:E2020. [PMID: 30104534 PMCID: PMC6222539 DOI: 10.3390/molecules23082020] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/09/2018] [Accepted: 08/11/2018] [Indexed: 12/16/2022] Open
Abstract
Epidemiological and laboratory studies have shown that green tea and green tea catechins exert beneficial effects on a variety of diseases, including cancer, metabolic syndrome, infectious diseases, and neurodegenerative diseases. In most cases, (-)-epigallocatechin gallate (EGCG) has been shown to play a central role in these effects by green tea. Catechins from other plant sources have also shown health benefits. Many studies have revealed that the binding of EGCG and other catechins to proteins is involved in its action mechanism. Computational docking analysis (CMDA) and X-ray crystallographic analysis (XCA) have provided detailed information on catechin-protein interactions. Several of these studies have revealed that the galloyl moiety anchors it to the cleft of proteins through interactions with its hydroxyl groups, explaining the higher activity of galloylated catechins such as EGCG and epicatechin gallate than non-galloylated catechins. In this paper, we review the results of CMDA and XCA of EGCG and other plant catechins to understand catechin-protein interactions with the expectation of developing new drugs with health-promoting properties.
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Affiliation(s)
- Shogo Nakano
- School of Food and Nutritional Sciences, Shizuoka University, Yada, Shizuoka 422-8526, Japan.
| | - Shin-Ichi Megro
- Biological Science Research, Kao Corporation, Ichikai-machi, Haga-gun, Tochigi 321-3497, Japan.
| | - Tadashi Hase
- Research and Development, Core Technology, Kao Corporation, Sumida, Tokyo 131-8501, Japan.
| | - Takuji Suzuki
- Faculty of Education, Art and Science, Yamagata University, Yamagata 990-8560, Japan.
| | - Mamoru Isemura
- School of Food and Nutritional Sciences, Shizuoka University, Yada, Shizuoka 422-8526, Japan.
| | - Yoriyuki Nakamura
- School of Food and Nutritional Sciences, Shizuoka University, Yada, Shizuoka 422-8526, Japan.
| | - Sohei Ito
- School of Food and Nutritional Sciences, Shizuoka University, Yada, Shizuoka 422-8526, Japan.
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In Vitro and In Silico Studies of the Molecular Interactions of Epigallocatechin-3- O-gallate (EGCG) with Proteins That Explain the Health Benefits of Green Tea. Molecules 2018; 23:molecules23061295. [PMID: 29843451 PMCID: PMC6099932 DOI: 10.3390/molecules23061295] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/18/2018] [Accepted: 05/25/2018] [Indexed: 01/08/2023] Open
Abstract
Green tea has been shown to have beneficial effects on many diseases such as cancer, obesity, inflammatory diseases, and neurodegenerative disorders. The major green tea component, epigallocatechin-3-O-gallate (EGCG), has been demonstrated to contribute to these effects through its anti-oxidative and pro-oxidative properties. Furthermore, several lines of evidence have indicated that the binding affinity of EGCG to specific proteins may explain its mechanism of action. This review article aims to reveal how EGCG-protein interactions can explain the mechanism by which green tea/EGCG can exhibit health beneficial effects. We conducted a literature search, using mainly the PubMed database. The results showed that several methods such as dot assays, affinity gel chromatography, surface plasmon resonance, computational docking analyses, and X-ray crystallography have been used for this purpose. These studies have provided evidence to show how EGCG can fit or occupy the position in or near functional sites and induce a conformational change, including a quaternary conformational change in some cases. Active site blocking, steric hindrance by binding of EGCG near an active site or induced conformational change appeared to cause inhibition of enzymatic activity and other biological activities of proteins, which are related to EGCG’s biological oligomer and formation of their toxic aggregates, leading to the prevention of neurodegenerative diseases and amyloidosis. In conclusion, these studies have provided useful information on the action of green tea/catechins and would lead to future studies that will provide further evidence for rational EGCG therapy and use EGCG as a lead compound for drug design.
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12
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Rengaraj A, Subbiah B, Haldorai Y, Yesudhas D, Yun HJ, Kwon S, Choi S, Han YK, Kim ES, N. HS, Huh YS. PAMAM/5-fluorouracil drug conjugate for targeting E6 and E7 oncoproteins in cervical cancer: a combined experimental/in silico approach. RSC Adv 2017. [DOI: 10.1039/c6ra26511a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In the present study, poly(amidoamine)/5-fluorouracil (PAMAM/5-FU) was used as a conjugate system for delivering drugs to target E6 and E7 oncoproteins, which are predominant in cervical cancers.
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13
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Rath SN, Ray M, Pattnaik A, Pradhan SK. Drug Target Identification and Elucidation of Natural Inhibitors for Bordetella petrii: An In Silico Study. Genomics Inform 2016; 14:241-254. [PMID: 28154518 PMCID: PMC5287131 DOI: 10.5808/gi.2016.14.4.241] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 11/24/2016] [Accepted: 11/24/2016] [Indexed: 11/20/2022] Open
Abstract
Environmental microbes like Bordetella petrii has been established as a causative agent for various infectious diseases in human. Again, development of drug resistance in B. petrii challenged to combat against the infection. Identification of potential drug target and proposing a novel lead compound against the pathogen has a great aid and value. In this study, bioinformatics tools and technology have been applied to suggest a potential drug target by screening the proteome information of B. petrii DSM 12804 (accession No. PRJNA28135) from genome database of National Centre for Biotechnology information. In this regards, the inhibitory effect of nine natural compounds like ajoene (Allium sativum), allicin (A. sativum), cinnamaldehyde (Cinnamomum cassia), curcumin (Curcuma longa), gallotannin (active component of green tea and red wine), isoorientin (Anthopterus wardii), isovitexin (A. wardii), neral (Melissa officinalis), and vitexin (A. wardii) have been acknowledged with anti-bacterial properties and hence tested against identified drug target of B. petrii by implicating computational approach. The in silico studies revealed the hypothesis that lpxD could be a potential drug target and with recommendation of a strong inhibitory effect of selected natural compounds against infection caused due to B. petrii, would be further validated through in vitro experiments.
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Affiliation(s)
- Surya Narayan Rath
- BIF Centre, Department of Bioinformatics, Orissa University of Agriculture and Technology, Bhubaneswar 751003, India
| | - Manisha Ray
- BIF Centre, Department of Bioinformatics, Orissa University of Agriculture and Technology, Bhubaneswar 751003, India
| | - Animesh Pattnaik
- BIF Centre, Department of Bioinformatics, Orissa University of Agriculture and Technology, Bhubaneswar 751003, India
| | - Sukanta Kumar Pradhan
- BIF Centre, Department of Bioinformatics, Orissa University of Agriculture and Technology, Bhubaneswar 751003, India
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Mahran RI, Hagras MM, Sun D, Brenner DE. Bringing Curcumin to the Clinic in Cancer Prevention: a Review of Strategies to Enhance Bioavailability and Efficacy. AAPS JOURNAL 2016; 19:54-81. [DOI: 10.1208/s12248-016-0003-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 10/04/2016] [Indexed: 01/28/2023]
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Sahoo M, Jena L, Rath SN, Kumar S. Identification of Suitable Natural Inhibitor against Influenza A (H1N1) Neuraminidase Protein by Molecular Docking. Genomics Inform 2016; 14:96-103. [PMID: 27729839 PMCID: PMC5056903 DOI: 10.5808/gi.2016.14.3.96] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 05/28/2016] [Accepted: 06/01/2016] [Indexed: 12/11/2022] Open
Abstract
The influenza A (H1N1) virus, also known as swine flu is a leading cause of morbidity and mortality since 2009. There is a need to explore novel anti-viral drugs for overcoming the epidemics. Traditionally, different plant extracts of garlic, ginger, kalmegh, ajwain, green tea, turmeric, menthe, tulsi, etc. have been used as hopeful source of prevention and treatment of human influenza. The H1N1 virus contains an important glycoprotein, known as neuraminidase (NA) that is mainly responsible for initiation of viral infection and is essential for the life cycle of H1N1. It is responsible for sialic acid cleavage from glycans of the infected cell. We employed amino acid sequence of H1N1 NA to predict the tertiary structure using Phyre2 server and validated using ProCheck, ProSA, ProQ, and ERRAT server. Further, the modelled structure was docked with thirteen natural compounds of plant origin using AutoDock4.2. Most of the natural compounds showed effective inhibitory activity against H1N1 NA in binding condition. This study also highlights interaction of these natural inhibitors with amino residues of NA protein. Furthermore, among 13 natural compounds, theaflavin, found in green tea, was observed to inhibit H1N1 NA proteins strongly supported by lowest docking energy. Hence, it may be of interest to consider theaflavin for further in vitro and in vivo evaluation.
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Affiliation(s)
- Maheswata Sahoo
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442102, India
| | - Lingaraja Jena
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442102, India
| | - Surya Narayan Rath
- Department of Bioinformatics, Orissa University of Agriculture & Technology, Bhubaneswar 751003, India
| | - Satish Kumar
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442102, India
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16
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Castellanos MR, Pan Q. Novel p53 therapies for head and neck cancer. World J Otorhinolaryngol Head Neck Surg 2016; 2:68-75. [PMID: 29204550 PMCID: PMC5698513 DOI: 10.1016/j.wjorl.2016.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 05/11/2016] [Indexed: 01/31/2023] Open
Abstract
Inactivation of the tumor suppressor p53 is the predominant pathogenetic event in head and neck squamous cell carcinoma (HNSCC). The p53 pathway in HNSCC can be compromised through multiple mechanisms including gene mutations, hyperactivation of endogenous negative p53 regulators and by the human papillomavirus E6 protein. Inactivation of p53 is associated with poor clinical response and outcome; therefore, restoration of the p53 signaling cascade may be an effective approach to ablate HNSCC cells. Viral approaches to restore p53 activity in HNSCC have been well-studied and shown modest activity in clinical trials. Recent work has focused on high-throughput screens and rational designs to identify and develop small molecules to rescue p53 function. Several p53-targeting small molecules have demonstrated very promising activity in pre-clinical studies but have yet progressed to the clinical setting. Further development of p53 therapies, in particular chemical approaches, should be prioritized and evaluated in the HNSCC setting.
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Affiliation(s)
- Mario R Castellanos
- Division of Research, Department of Medicine, Staten Island University Hospital, Northwell Health, Staten Island, NY 10305, United States
| | - Quintin Pan
- Department of Otolaryngology - Head and Neck Surgery, The Ohio State University Wexner Medical Center, Columbus, OH 43210, United States.,Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University Comprehensive Cancer Center, Columbus, OH 43210, United States
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17
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Rietz A, Petrov DP, Bartolowits M, DeSmet M, Davisson VJ, Androphy EJ. Molecular Probing of the HPV-16 E6 Protein Alpha Helix Binding Groove with Small Molecule Inhibitors. PLoS One 2016; 11:e0149845. [PMID: 26915086 PMCID: PMC4767726 DOI: 10.1371/journal.pone.0149845] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 02/05/2016] [Indexed: 12/30/2022] Open
Abstract
The human papillomavirus (HPV) HPV E6 protein has emerged as a central oncoprotein in HPV-associated cancers in which sustained expression is required for tumor progression. A majority of the E6 protein interactions within the human proteome use an alpha-helix groove interface for binding. The UBE3A/E6AP HECT domain ubiquitin ligase binds E6 at this helix-groove interface. This enables formation of a trimeric complex with p53, resulting in destruction of this tumor suppressor. While recent x-ray crystal structures are useful, examples of small molecule probes that can modulate protein interactions at this interface are limited. To develop insights useful for potential structure-based design of ligands for HPV E6, a series of 2,6-disubstituted benzopyranones were prepared and tested as competitive antagonists of E6-E6AP helix-groove interactions. These small molecule probes were used in both binding and functional assays to evaluate recognition features of the E6 protein. Evidence for an ionic functional group interaction within the helix groove was implicated by the structure-activity among the highest affinity ligands. The molecular topographies of these protein-ligand interactions were evaluated by comparing the binding and activities of single amino acid E6 mutants with the results of molecular dynamic simulations. A group of arginine residues that form a rim-cap over the E6 helix groove offer compensatory roles in binding and recognition of the small molecule probes. The flexibility and impact on the overall helix-groove shape dictated by these residues offer new insights for structure-based targeting of HPV E6.
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Affiliation(s)
- Anne Rietz
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Dino P. Petrov
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana, United States of America
| | - Matthew Bartolowits
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana, United States of America
| | - Marsha DeSmet
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - V. Jo Davisson
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue University, West Lafayette, Indiana, United States of America
| | - Elliot J. Androphy
- Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
- * E-mail:
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Kumar S, Jena L, Sahoo M, Nayak T, Mohod K, Daf S, Varma AK. The in Silico Approach to Identifying a Unique Plant-Derived Inhibitor Against E6 and E7 Oncogenic Proteins of High-Risk Human Papillomavirus 16 and 18. AVICENNA JOURNAL OF MEDICAL BIOCHEMISTRY 2016. [DOI: 10.17795/ajmb-33958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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19
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Mishra A, Das BC. Curcumin as an anti-human papillomavirus and anti-cancer compound. Future Oncol 2015; 11:2487-90. [PMID: 26278542 DOI: 10.2217/fon.15.166] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- Alok Mishra
- Institute of Cytology & Preventive Oncology, I-7, Sector -39, Noida, Uttar Pradesh 201301, India.,Ambedkar Centre for Biomedical Research, University of Delhi, Delhi-110 007, India
| | - Bhudev C Das
- Institute of Cytology & Preventive Oncology, I-7, Sector -39, Noida, Uttar Pradesh 201301, India.,Ambedkar Centre for Biomedical Research, University of Delhi, Delhi-110 007, India.,Amity Institute of Molecular Medicine & Stem Cell Research, Amity University, Noida, Uttar Pradesh 201313, India (current address)
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20
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Kumar S, Jena L, Sahoo M, Kakde M, Daf S, Varma AK. In Silico Docking to Explicate Interface between Plant-Originated Inhibitors and E6 Oncogenic Protein of Highly Threatening Human Papillomavirus 18. Genomics Inform 2015; 13:60-7. [PMID: 26175664 PMCID: PMC4500800 DOI: 10.5808/gi.2015.13.2.60] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/04/2015] [Accepted: 06/12/2015] [Indexed: 01/14/2023] Open
Abstract
The leading cause of cancer mortality globally amongst the women is due to human papillomavirus (HPV) infection. There is need to explore anti-cancerous drugs against this life-threatening infection. Traditionally, different natural compounds such as withaferin A, artemisinin, ursolic acid, ferulic acid, (-)-epigallocatechin-3-gallate, berberin, resveratrol, jaceosidin, curcumin, gingerol, indol-3-carbinol, and silymarin have been used as hopeful source of cancer treatment. These natural inhibitors have been shown to block HPV infection by different researchers. In the present study, we explored these natural compounds against E6 oncoprotein of high risk HPV18, which is known to inactivate tumor suppressor p53 protein. E6, a high throughput protein model of HPV18, was predicted to anticipate the interaction mechanism of E6 oncoprotein with these natural inhibitors using structure-based drug designing approach. Docking analysis showed the interaction of these natural inhibitors with p53 binding site of E6 protein residues 108-117 (CQKPLNPAEK) and help reinstatement of normal p53 functioning. Further, docking analysis besides helping in silico validations of natural compounds also helped elucidating the molecular mechanism of inhibition of HPV oncoproteins.
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Affiliation(s)
- Satish Kumar
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442-102, India
| | - Lingaraja Jena
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442-102, India
| | - Maheswata Sahoo
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442-102, India
| | - Mrunmayi Kakde
- Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences, Sevagram 442-102, India
| | - Sangeeta Daf
- Obstetrics & Gynaecology, Datta Meghe Institute of Medical Sciences (Deemed University), Nagpur 440-022, India
| | - Ashok K Varma
- Advanced Centre for Treatment, Research & Education in Cancer, Navi Mumbai 410-210, India
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21
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Human Papillomavirus Vaccine. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2015; 101:231-322. [DOI: 10.1016/bs.apcsb.2015.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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