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da Fonseca CAR, Prado VC, Paltian JJ, Kazmierczak JC, Schumacher RF, Sari MHM, Cordeiro LM, da Silva AF, Soares FAA, Oliboni RDS, Luchese C, Cruz L, Wilhelm EA. 4-(Phenylselanyl)-2H-chromen-2-one-Loaded Nanocapsule Suspension-A Promising Breakthrough in Pain Management: Comprehensive Molecular Docking, Formulation Design, and Toxicological and Pharmacological Assessments in Mice. Pharmaceutics 2024; 16:269. [PMID: 38399323 PMCID: PMC10892109 DOI: 10.3390/pharmaceutics16020269] [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: 01/09/2024] [Revised: 02/10/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Therapies for the treatment of pain and inflammation continue to pose a global challenge, emphasizing the significant impact of pain on patients' quality of life. Therefore, this study aimed to investigate the effects of 4-(Phenylselanyl)-2H-chromen-2-one (4-PSCO) on pain-associated proteins through computational molecular docking tests. A new pharmaceutical formulation based on polymeric nanocapsules was developed and characterized. The potential toxicity of 4-PSCO was assessed using Caenorhabditis elegans and Swiss mice, and its pharmacological actions through acute nociception and inflammation tests were also assessed. Our results demonstrated that 4-PSCO, in its free form, exhibited high affinity for the selected receptors, including p38 MAP kinase, peptidyl arginine deiminase type 4, phosphoinositide 3-kinase, Janus kinase 2, toll-like receptor 4, and nuclear factor-kappa β. Both free and nanoencapsulated 4-PSCO showed no toxicity in nematodes and mice. Parameters related to oxidative stress and plasma markers showed no significant change. Both treatments demonstrated antinociceptive and anti-edematogenic effects in the glutamate and hot plate tests. The nanoencapsulated form exhibited a more prolonged effect, reducing mechanical hypersensitivity in an inflammatory pain model. These findings underscore the promising potential of 4-PSCO as an alternative for the development of more effective and safer drugs for the treatment of pain and inflammation.
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Affiliation(s)
- Caren Aline Ramson da Fonseca
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Vinicius Costa Prado
- Graduate Program in Pharmaceutical Sciences, Pharmaceutical Technology Laboratory, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil;
| | - Jaini Janke Paltian
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Jean Carlo Kazmierczak
- Graduate Program in Chemistry, Chemistry Department, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (J.C.K.); (R.F.S.)
| | - Ricardo Frederico Schumacher
- Graduate Program in Chemistry, Chemistry Department, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (J.C.K.); (R.F.S.)
| | | | - Larissa Marafiga Cordeiro
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Aline Franzen da Silva
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Felix Alexandre Antunes Soares
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil; (L.M.C.); (A.F.d.S.); (F.A.A.S.)
| | - Robson da Silva Oliboni
- Center for Chemical, Pharmaceutical, and Food Sciences, CCQFA, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil;
| | - Cristiane Luchese
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
| | - Letícia Cruz
- Graduate Program in Pharmaceutical Sciences, Pharmaceutical Technology Laboratory, Federal University of Santa Maria, Santa Maria CEP 97105-900, RS, Brazil;
| | - Ethel Antunes Wilhelm
- Graduate Program in Biochemistry and Bioprospecting, Biochemical Pharmacology Research Laboratory, Federal University of Pelotas, Pelotas CEP 96010-900, RS, Brazil; (C.A.R.d.F.); (J.J.P.); (C.L.)
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Srivastava AK, Srivastava S, Kumar V, Ghosh S, Yadav S, Malik R, Roy P, Prasad R. Identification and mechanistic exploration of structural and conformational dynamics of NF-kB inhibitors: rationale insights from in silico and in vitro studies. J Biomol Struct Dyn 2024; 42:1485-1505. [PMID: 37054525 DOI: 10.1080/07391102.2023.2200490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/02/2023] [Indexed: 04/15/2023]
Abstract
Increased expression of target genes that code for proinflammatory chemical mediators results from a series of intracellular cascades triggered by activation of dysregulated NF-κB signaling pathway. Dysfunctional NF-kB signaling amplifies and perpetuates autoimmune responses in inflammatory diseases, including psoriasis. This study aimed to identify therapeutically relevant NF-kB inhibitors and elucidate the mechanistic aspects behind NF-kB inhibition. After virtual screening and molecular docking, five hit NF-kB inhibitors opted, and their therapeutic efficacy was examined using cell-based assays in TNF-α stimulated human keratinocyte cells. To investigate the conformational changes of target protein and inhibitor-protein interaction mechanisms, molecular dynamics (MD) simulations, binding free energy calculations together with principal component (PC) analysis, dynamics cross-correlation matrix analysis (DCCM), free energy landscape (FEL) analysis and quantum mechanical calculations were carried out. Among identified NF-kB inhibitors, myricetin and hesperidin significantly scavenged intracellular ROS and inhibited NF-kB activation. Analysis of the MD simulation trajectories of ligand-protein complexes revealed that myricetin and hesperidin formed energetically stabilized complexes with the target protein and were able to lock NF-kB in a closed conformation. Myricetin and hesperidin binding to the target protein significantly impacted conformational changes and internal dynamics of amino acid residues in protein domains. Tyr57, Glu60, Lys144 and Asp239 residues majorly contributed to locking the NF-kB in a closed conformation. The combinatorial approach employing in silico tools integrated with cell-based approaches substantiated the binding mechanism and NF-kB active site inhibition by the lead molecule myricetin, which can be explored as a viable antipsoriatic drug candidate associated with dysregulated NF-kB.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Amit Kumar Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Shubham Srivastava
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Viney Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Souvik Ghosh
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Siddharth Yadav
- Department of Computer Science and Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Ruchi Malik
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan, India
| | - Partha Roy
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
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Biswas D, Somkuwar BG, Borah JC, Varadwaj PK, Gupta S, Khan ZA, Mondal G, Chattoraj A, Deb L. Phytochemical mediated modulation of COX-3 and NFκB for the management and treatment of arthritis. Sci Rep 2023; 13:13612. [PMID: 37604838 PMCID: PMC10442333 DOI: 10.1038/s41598-023-37729-2] [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: 08/25/2022] [Accepted: 06/27/2023] [Indexed: 08/23/2023] Open
Abstract
In this study, we investigated whether zerumbone (ZBN), ellagic acid (ELA) and quercetin (QCT), the plant-derived components, can modulate the role of COX-3 or cytokines liable in arthritic disorder. Initially, the effect of ZBN, ELA, and QCT on inflammatory process was investigated using in-vitro models. In-silico docking and molecular dynamics study of these molecules with respective targets also corroborate with in-vitro studies. Further, the in-vivo anti-arthritic potential of these molecules in Complete Freund's adjuvant (CFA)-induced arthritic rats was confirmed. CFA increases in TNF-α and IL-1β levels in the arthritic control animals were significantly (***p < 0.001) attenuated in the ZBN- and ELA-treated animals. CFA-induced attenuation in IL-10 levels recovered under treatment. Moreover, ELA attenuated CFA-induced upregulation of COX-3 and ZBN downregulated CFA-triggered NFκB expression in arthritic animals. The bonding patterns of zerumbone in the catalytic sites of targets provide a useful hint in designing and developing suitable derivatives that can be used as a potential drug. To our best knowledge, the first time we are reporting the role of COX-3 in the treatment of arthritic disorders which could provide a novel therapeutic approach for the treatment of inflammatory disorders.
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Affiliation(s)
- Dipak Biswas
- Natural Product Chemistry and Pharmacology Programme, Medicinal Plants and Horticulture Resources Division, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
| | - Bharat Gopalrao Somkuwar
- Bioinformatics and Bioresources Database Division, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
| | - Jagat Chandra Borah
- Natural Product Chemistry and Pharmacology Programme, Medicinal Plants and Horticulture Resources Division, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
- Institute of Advanced Study in Science and Technology, (An Autonomous Institute Under Department of Science & Technology, Govt. of India) Vigyan Path, Paschim Boragaon Garchuk, Guwahati, 781035, Assam, India
| | - Pritish Kumar Varadwaj
- Department of Applied Sciences, Indian Institute of Information Technology, Devghat, Jhalwa, Allahabad, 211015, Uttar Pradesh, India
| | - Saurabh Gupta
- Department of Applied Sciences, Indian Institute of Information Technology, Devghat, Jhalwa, Allahabad, 211015, Uttar Pradesh, India
| | - Zeeshan Ahmad Khan
- Biological Rhythm Laboratory, Animal Resources Programme, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
| | - Gopinath Mondal
- Biological Rhythm Laboratory, Animal Resources Programme, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
| | - Asamanja Chattoraj
- Biological Rhythm Laboratory, Animal Resources Programme, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India
- Department of Animal Science, Kazi Nazrul University, Paschim Bardhaman, Asansol, 71330, West Bengal, India
| | - Lokesh Deb
- Natural Product Chemistry and Pharmacology Programme, Medicinal Plants and Horticulture Resources Division, Institute of Bioresources and Sustainable Development, (An Autonomous Institute of Department of Biotechnology, Government of India), Takyelpat, Imphal, 795001, Manipur, India.
- Institute of Bioresources and Sustainable Development-Regional Centre, Sikkim (Department of Biotechnology, Government of India), 5th Mile, Near Metro Point, Tadong, Gangtok, 737102, Sikkim, India.
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Anjum N, Hossain MS, Rahman MA, Rafi MKJ, Al Noman A, Afroze M, Saha S, Alelwani W, Tangpong J. Deciphering antidiarrheal effects of Meda pata (Litsea glutinosa (Lour.) C.B.Rob.) leaf extract in chemical-induced models of albino rats. JOURNAL OF ETHNOPHARMACOLOGY 2023; 308:116189. [PMID: 36791925 DOI: 10.1016/j.jep.2023.116189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Diarrhea is one of the leading causes of preventable death in developing countries, mainly caused by bacterial infections and traditional therapies are very common in diarrheal incidences. Meda Pata (Litsea glutionsa) has a long history of use as traditional medicine for diarrhea, dysentery, and spasm in Bangladesh, India, and some other Asian countries. AIM OF THE STUDY This research reports the antidiarrheal effects of Meda Pata (Litsea glutinosa leaf extract, LGLEx) in animal models. The work has been supported by in silico molecular docking study to verify the effects. MATERIALS AND METHODS The antidiarrheal effect of LGLEx was investigated in castor oil-induced diarrhea, magnesium sulfate-induced diarrhea, and gastrointestinal motility test models. Antidiarrheal effects were supported by a molecular docking study through an interaction between LGLEx's GC-MS analyzed imidazole-containing compounds and muscarinic acetylcholine receptor (PDB: 4U14) and 5-HT3 receptor (PDB: 5AIN). RESULTS LGLEx potentially reduced the diarrheal incidences in in vivo assays reducing gastrointestinal motility. The maximum diarrheal inhibition was obtained in the castor oil-induced model (62.63%) and and BaSO4-induced model (73.14%), which were statistically significant (P < 0.05) when compared to the reference drug loperamide. In the castor-oil and BaSO4-induced models, peristaltic movement was reduced by 25.96% and 32.17%, respectively. Biochemical markers particularly IgE, C-reactive proteins, and serum electrolytes were significantly (P < 0.0) restored in treated groups. A Molecular docking analysis revealed that two compounds (1-Ethyl-2-hydroxymethylimidazole and 1,6-Anhydro-beta-D-glucofuranose demonstrated the highest binding affinity with target receptors muscarinic acetylcholine receptor (PDB: 4U14) and 5-HT3 receptor (PDB: 5AIN) confirming their drug likeliness. The findings indicate a high potential antidiarrheal impact that warrants further investigation for its therapeutic application.
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Affiliation(s)
- Nazifa Anjum
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh.
| | - Md Saddam Hossain
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh.
| | - Md Atiar Rahman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh; School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
| | - Md Khalid Juhani Rafi
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh.
| | - Abdullah Al Noman
- Department of Pharmacy, International Islamic University Chittagong, Kumira, Chittagong, 4318, Bangladesh.
| | - Mirola Afroze
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dr. Kudrat-i-Khuda Road, Dhanmondi, Dhaka, Bangladesh.
| | - Srabonti Saha
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, 4331, Bangladesh.
| | - Walla Alelwani
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia.
| | - Jitbanjong Tangpong
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
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Attenuation of Inflammatory Responses in Breast and Ovarian Cancer Cells by a Novel Chalcone Derivative and Its Increased Potency by Curcumin. Mediators Inflamm 2023; 2023:5156320. [PMID: 36687217 PMCID: PMC9851785 DOI: 10.1155/2023/5156320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 11/20/2022] [Accepted: 12/07/2022] [Indexed: 01/15/2023] Open
Abstract
Background Breast and ovarian cancers are two common malignancies in women and a leading cause of death globally. The aim of the present study was to explore the effects of a novel chalcone derivative 1-(4-(methylsulfonyl)phenyl)-3-(phenylthio)-3-(p-tolyl)propane-1-one (MPP) individually or combined with curcumin, a well-known herbal medicine with anticancer properties, as a new combination therapy on inflammatory pathways in breast and ovarian cancer cell lines. Methods LPS-induced NF-κB DNA-binding activity and the levels of proinflammatory cytokines were measured in the MPP- and MPP-curcumin combination-treated MDA-MB-231 and SKOV3 cells by ELISA-based methods. The expression of COX2, INOS, and MMP9 genes and nitrite levels was also evaluated by real-time qRT-PCR and Griess method, respectively. IκB levels were evaluated by Western blotting. Results MPP significantly inhibited the DNA-binding activity of NF-κB in each cell line and subsequently suppressed the expression of downstream genes including COX2, MMP9, and INOS. The levels of proinflammatory cytokines, as well as NO, were also decreased in response to MPP. All the effects of MPP were enhanced by the addition of curcumin. MPP, especially when combined with curcumin, caused a remarkable increase in the concentration of IκB. Conclusion MPP and its coadministration with curcumin effectively reduced the activity of the NF-κB signaling pathway, leading to a reduced inflammatory response in the environment of cancer cells. Thus, MPP, either alone or combined with curcumin, might be considered an effective remedy for the suppression of inflammatory processes in breast and ovarian cancer cells.
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Vibrational spectroscopic characterization and structural investigations of Cepharanthine, a natural alkaloid. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132693] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Ahmad S, Bhanu P, Kumar J, Pathak RK, Mallick D, Uttarkar A, Niranjan V, Mishra V. Molecular dynamics simulation and docking analysis of NF-κB protein binding with sulindac acid. Bioinformation 2022; 18:170-179. [PMID: 36518123 PMCID: PMC9722428 DOI: 10.6026/97320630018170] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 08/22/2023] Open
Abstract
It is of interest to document the Molecular Dynamics Simulation and docking analysis of NF-κB target with sulindac sodium in combating COVID-19 for further consideration. Sulindac is a nonsteroidal anti-inflammatory drug (NSAID) of the arylalkanoic acid class that is marketed by Merck under the brand name Clinoril. We show the binding features of sulindac sodium with NF-κB that can be useful in drug repurposing in COVID-19 therapy.
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Affiliation(s)
- Shaban Ahmad
- International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India
- Department of Computer Science, Jamia Milia Islamia, New Delhi 110025, India
| | - Piyush Bhanu
- Xome Life Sciences, Bangalore Bioinnovation Centre, Helix Biotech Park, Bengaluru 560100, Karnataka, India
| | - Jitendra Kumar
- Bangalore Bioinnovation Centre (BBC), Helix Biotech Park, Electronics City Phase 1, Bengaluru 560100, Karnataka, India
| | - Ravi Kant Pathak
- School of Bioengineering and Biosciences, Lovely Professional University, Jalandhar-Delhi Grand Trunk Rd, Phagwara 144001, Punjab, India
| | - Dharmendra Mallick
- Department of Botany, Deshbandhu College, University of Delhi, Delhi 110019, India
| | - Akshay Uttarkar
- Department of Biotechnology, RV College of Engineering, RV Vidyanikethan Post, Mysuru Road, Bengaluru 560059, India
| | - Vidya Niranjan
- Department of Biotechnology, RV College of Engineering, RV Vidyanikethan Post, Mysuru Road, Bengaluru 560059, India
| | - Vachaspati Mishra
- Department of Botany, Hindu College, University of Delhi, Delhi 110007, India
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Molecular docking prediction and in vitro studies elucidate anti-inflammatory effect of Garcinia extract against inducible nitric oxide synthase and cyclooxygenase-2 targets. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1186/s43088-022-00214-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Garcinia is a tropical plant that has been traditionally used in medicinal folklore for its potential antioxidant, antibacterial, anti-hyperlipidemic, anti-diabetic, hepatoprotective, etc. In this study, methanolic extract of Garcinia herbal supplement (GME) and its important phytoconstituents (Garcinol and hydroxycitric acid) were evaluated for their inhibitory action against important inflammatory markers iNOS and COX-2 in lipopolysaccharide-induced RAW 264.7 cells. iNOS and COX-2 play a major role in the process of inflammation, and inhibition of these molecules will help to alleviate the inflammatory process. The cells were pre-treated with two doses of GME (115 µg/ml and 230 µg/ml); Ggarcinol (6 µM and 12 µM); hydroxycitric acid (17.5 µg/ml and 35 µg/ml) followed by stimulation with 1 µg/ml of LPS for 24 h.
Results
The results of the study demonstrated that Garcinia and its active components Garcinol and HCA play an important role in suppressing LPS-induced relative mRNA expression of iNOS, COX-2, and subsequent reduction in the levels of total nitric oxide and prostaglandinE2. Molecular docking analysis of Ggarcinol and HCA with iNOS and COX-2 proteins showed potent interactions with negative binding energies.
Conclusions
This study suggests that Garcinia possess anti-inflammatory activity thus providing a possibility for drug designing as iNOS and COX-2 inhibitor.
Graphical Abstract
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Insights into the cytoprotective potential of Bergenia ligulata against oxalate-induced oxidative stress and epithelial-mesenchymal transition (EMT) via TGFβ1/p38MAPK pathway in human renal epithelial cells. Urolithiasis 2022; 50:259-278. [PMID: 35174397 DOI: 10.1007/s00240-022-01315-4] [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: 08/26/2021] [Accepted: 02/02/2022] [Indexed: 10/19/2022]
Abstract
Oxalate exposure to human renal epithelial cells triggers a vicious cycle of oxidative stress leading to cellular injury and deposition of calcium oxalate crystals on the injured cells. This results in further oxidative damage causing inflammation and loss of cell-cell adhesion factors, ultimately leading to irreparable kidney damage. However, these events can be attenuated or prevented by plants rich in antioxidants used in the traditional system of medicine for treatment of kidney stones. To delineate the mechanism by which Bergenia ligulata extract exerts its cytoprotective role in oxalate-induced injury we designed this study. Our results revealed that oxalate-injured HK2 cells cotreated with ethanolic extract of Bergenia ligulata displayed increased viability, reduced oxidative stress due to lowered production of intracellular reactive oxygen species (ROS) and decreased apoptosis. We also observed lowered markers of inflammation, along with increased expression of epithelial marker E-cadherin and decreased expression of mesenchymal markers Vimentin, F-actin, Transforming growth factor beta 1 (TGF-β1) and EMT-related proteins in renal tubular epithelial cells through immunocytochemistry, real-time PCR and western blotting. Our findings collectively suggest that by reducing oxidative stress, modulating crystal structure and preventing crystal-cell adhesion, B. ligulata inhibits the EMT pathway by downregulating the various mediators and thereby exerts its cytoprotective effect.
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Dichloromethane extract of Potentilla fulgens wall. Ex. Sims ameliorates alloxan-induced oxidative stress and inflammatory responses in mice. CLINICAL PHYTOSCIENCE 2021. [DOI: 10.1186/s40816-020-00239-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Mallavarpu Ambrose J, Veeraraghavan VP, Kullappan M, Velmurugan D, Vennila R, Rupert S, Dorairaj S, Surapaneni KM. Molecular modeling studies of the effects of withaferin A and its derivatives against oncoproteins associated with breast cancer stem cell activity. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Imatinib modulates pro-inflammatory microenvironment with angiostatic effects in experimental lung carcinogenesis. Inflammopharmacology 2019; 28:231-252. [PMID: 31676982 DOI: 10.1007/s10787-019-00656-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 10/10/2019] [Indexed: 10/25/2022]
Abstract
Lung cancer has second highest rate of incidence and mortality around the world. Smoking cigarettes is the main stream cause of lung carcinogenesis along with other factors such as spontaneous mutations, inactivation of tumor suppressor genes. The present study was aimed to identify the mechanistic role of Imatinib in the chemoprevention of experimental lung carcinogenesis in rat model. Gross morphological observations for tumor formation, histological examinations, RT-PCR, Western blotting, fluorescence spectroscopy and molecular docking studies were performed to elucidate the chemopreventive effects of Imatinib and support our hypothesis by various experiments. It is evident that immuno-compromised microenvironment inside solid tumors is responsible for tumor progression and drug resistance. Therefore, it is inevitable to modulate the pro-inflammatory signaling inside solid tumors to restrict neoangiogenesis. In the present study, we observed that Imatinib could downregulate the inflammatory signaling and also attributed angiostatic effects. Moreover, Imatinib also altered the biophysical properties of BAL cells such as plasma membrane potential, fluidity and microviscosity to restrict their infiltration and thereby accumulation to mount immuno-compromised environment inside the solid tumors during angiogenesis. Our molecular docking studies suggest that immunomodulatory and angiostatic properties of Imatinib could be either independent of each other or just a case of synergistic pleiotropy. Imatinib was observed to activate the intrinsic or mitochondrial pathway of apoptosis to achieve desired effects in cancer cell killings. Interestingly, binding of Imatinib inside the catalytic domain of PARP-1 also suggests that it has caspase-independent properties in promoting cancer cell deaths.
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Bacupari (Garcinia brasiliensis) extract modulates intestinal microbiota and reduces oxidative stress and inflammation in obese rats. Food Res Int 2019; 122:199-208. [PMID: 31229073 DOI: 10.1016/j.foodres.2019.04.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 04/01/2019] [Accepted: 04/06/2019] [Indexed: 02/07/2023]
Abstract
The objective of this study was to evaluate the effects of an ethanolic extract of the bark of bacupari (Garcinia brasiliensis - EEB) on the abundance of intestinal microbiota, concentration of short-chain fatty acids (SCFAs), oxidative stress, and inflammation in obese rats fed a high-fat diet (HFD). Male Wistar rats were divided into three groups: an HFD-fed obese control group, a group fed HFD plus EEB (BHFD) at a dose of 300 mg per animal per day (42 mg 7-epiclusianone and 10.76 mg morelloflavone), and a lean control group fed an AIN-93 M diet for 8 weeks. EEB decreased (p < 0.05) the abundance of organisms belonging to the phyla Firmicutes and Proteobacteria, and increased (p < 0.05) the concentration of propionic acid. Liver concentrations of malondialdehyde, nitric oxide, resistin, and p65 nuclear factor-kappa B p65(NF-κB) decreased (p < 0.05), while the expression of heat shock protein (HSP)72 and catalase increased (p < 0.05) with the consumption of EEB. Moreover, computational molecular modeling studies involving molecular docking between the main constituents of EEB, 7-epiclusianone and morelloflavone, and NF-κB suggested its inhibitory activity, thus corroborating the experimental results. The consumption of EEB may therefore be a promising strategy for the beneficial dietary modulation of the intestinal ecosystem, thereby countering oxidative stress and inflammation in obese rats. This activity is attributable to the presence of bioactive compounds that act individually or synergistically in the scavenging of free radicals or in the inflammatory process.
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Vinothkanna A, Palanisamy P, Sekar S. Activity of antibacterial compounds from Bacillus subtilis against cellular oncoproteins by in silico approach. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Silva VS, Vergara FM, Seito LN, Antunes D, Santos LHS, Henriques MG, Caffarena ER. Thiophenacetamide as a potential modulator to NF-κB: structure and dynamics study using in silico and molecular biology assays. J Biomol Struct Dyn 2019; 37:4395-4406. [DOI: 10.1080/07391102.2018.1552623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Vanessa S. Silva
- PROCC, Grupo de Biofísica Computacional e Modelagem Molecular, Fiocruz, Rio de Janeiro, Brazil
| | - Fatima M. Vergara
- Instituto de Tecnologia em Fármacos – Farmanguinhos, Laboratório de Farmacologia Aplicada, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde (CDTS), Fiocruz, Rio de Janeiro, Brazil
| | - Leonardo N. Seito
- Instituto de Tecnologia em Fármacos – Farmanguinhos, Laboratório de Farmacologia Aplicada, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, Brazil
| | - Deborah Antunes
- PROCC, Grupo de Biofísica Computacional e Modelagem Molecular, Fiocruz, Rio de Janeiro, Brazil
| | - Lucianna H. S. Santos
- Laboratório de Modelagem Molecular e Planejamento de Fármacos, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Maria G. Henriques
- Instituto de Tecnologia em Fármacos – Farmanguinhos, Laboratório de Farmacologia Aplicada, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Inovação em Doenças de Populações Negligenciadas (INCT-IDPN), Rio de Janeiro, Brazil
| | - Ernesto R. Caffarena
- PROCC, Grupo de Biofísica Computacional e Modelagem Molecular, Fiocruz, Rio de Janeiro, Brazil
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Nandeesh R, Vijayakumar S, Munnolli A, Alreddy A, Veerapur VP, Chandramohan V, Manjunatha E. Bioactive phenolic fraction of Citrus maxima abate lipopolysaccharide-induced sickness behaviour and anorexia in mice: In-silico molecular docking and dynamic studies of biomarkers against NF-κB. Biomed Pharmacother 2018; 108:1535-1545. [DOI: 10.1016/j.biopha.2018.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/01/2018] [Accepted: 10/02/2018] [Indexed: 12/13/2022] Open
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Pharmacotherapeutic potential of phytochemicals: Implications in cancer chemoprevention and future perspectives. Biomed Pharmacother 2018; 97:564-586. [DOI: 10.1016/j.biopha.2017.10.124] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/14/2017] [Accepted: 10/23/2017] [Indexed: 12/17/2022] Open
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Vijayakumari B, Sasikala V, Radha SR, Rameshwar HY. In silico analysis of aqueous root extract of Rotula aquatica Lour for docking analysis of the compound 3-O-acetyl-11-keto-β-boswellic acid contents. SPRINGERPLUS 2016; 5:1486. [PMID: 27652060 PMCID: PMC5011466 DOI: 10.1186/s40064-016-3134-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/23/2016] [Indexed: 11/12/2022]
Abstract
Molecular docking is a bioinformatics tool used to study and analyse ligand receptor interactions. This helps in identifying the receptors (molecular targets) for different ligands. Using these technologies, compound isolation and drug discovery from herbals is achieved. Herbs are widely used in treatment of various ailments from time immemorial. Phytochemists and drug developers are now interestingly working in developing new molecules that can act effectively than conventional drugs. As they are developing it mostly from herbs they are found to be effective and safer drugs and quantity to be used become minimum. Rotula aquatica Lour is a plant distributed widely in India and used for urinary disorders. The plant root was extracted and studied for its active compounds that possess antiurolithiatic activity. After performing various preliminary phytochemical studies and applying chromatographic methods, molecular docking was carried out with isolated bioactive compound and Tamm–Horsfall protein (THP). By docking analysis the bioactive compound 3-O-acetyl-11-keto-β-boswellic acid interacted with THP and it may inhibit calcium oxalate crystallization.
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Affiliation(s)
| | - Venkatachalam Sasikala
- Department of Botany, Avinashilingam University for Women, Coimbatore, Tamil Nadu 6410043 India
| | - Singanallur Ramu Radha
- Department of Botany, Avinashilingam University for Women, Coimbatore, Tamil Nadu 6410043 India
| | - Hiranmai Yadav Rameshwar
- School of Natural Resources Management and Environmental Sciences, College of Agriculture and Environmental Sciences, Haramaya University, P.O. Box #337, Dire Dawa, Ethiopia
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Exploring the inhibitory potential of bioactive compound from Luffa acutangula against NF-κB—A molecular docking and dynamics approach. Comput Biol Chem 2016; 62:29-35. [DOI: 10.1016/j.compbiolchem.2016.03.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/23/2016] [Accepted: 03/27/2016] [Indexed: 12/25/2022]
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Saini MK, Sanyal SN. Cell Cycle Regulation and Apoptotic Cell Death in Experimental Colon Carcinogenesis: Intervening with Cyclooxygenase-2 Inhibitors. Nutr Cancer 2015; 67:620-36. [DOI: 10.1080/01635581.2015.1015743] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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21
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Rana C, Piplani H, Vaish V, Nehru B, Sanyal SN. Downregulation of telomerase activity by diclofenac and curcumin is associated with cell cycle arrest and induction of apoptosis in colon cancer. Tumour Biol 2015; 36:5999-6010. [PMID: 25744732 DOI: 10.1007/s13277-015-3276-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 02/18/2015] [Indexed: 12/31/2022] Open
Abstract
Uncontrolled cell proliferation is the hallmark of cancer, and cancer cells have typically acquired damage to genes that directly regulate their cell cycles. The synthesis of DNA onto the end of chromosome during the replicative phase of cell cycle by telomerase may be necessary for unlimited proliferation of cells. Telomerase, a ribonucleoprotein enzyme is considered as a universal therapeutic target of cancer because of its preferential expression in cancer cells and its presence in 90 % of tumors. We studied the regulation of telomerase and telomerase reverse transcriptase catalytic subunit (TERT) by diclofenac and curcumin, alone and also in combination, in 1, 2-dimethylhydrazine dihydrochloride-induced colorectal cancer in rats. The relationship of telomerase activity with tumors suppressor proteins (p51, Rb, p21), cell cycle machinery, and apoptosis was also studied. Telomerase is highly expressed in DMH group and its high activity is associated with increased TERT expression. However, telomerase is absent or is present at lower levels in normal tissue. CDK4, CDK2, cyclin D1, and cyclin E are highly expressed in DMH as assessed by RT-PCR, qRT-PCR, Western blot, and immunofluorescence analysis. Diclofenac and curcumin overcome these carcinogenic effects by downregulating telomerase activity, diminishing the expression of TERT, CDK4, CDK2, cyclin D1, and cyclin E. The anticarcinogenic effects shown after the inhibition of telomerase activity by diclofenac and curcumin may be associated with upregulation of tumor suppressor proteins p51, Rb, and p21, whose activation induces the cells cycle arrest and apoptosis.
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Affiliation(s)
- Chandan Rana
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
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Rana C, Piplani H, Vaish V, Nehru B, Sanyal SN. Downregulation of PI3-K/Akt/PTEN pathway and activation of mitochondrial intrinsic apoptosis by Diclofenac and Curcumin in colon cancer. Mol Cell Biochem 2015; 402:225-41. [PMID: 25644785 DOI: 10.1007/s11010-015-2330-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/16/2015] [Indexed: 02/07/2023]
Abstract
Phosphatidylinositol 3-kinase (PI3-K)/PTEN/Akt signaling is over activated in various tumors including colon cancer. Activation of this pathway regulates multiple biological processes such as apoptosis, metabolism, cell proliferation, and cell growth that underlie the biology of a cancer cell. In the present study, the chemopreventive effects have been observed of Diclofenac, a preferential COX-2 inhibitory non-steroidal anti-inflammatory drugs, and Curcumin, a natural anti-inflammatory agent, in the early stage of colorectal carcinogenesis induced by 1,2-dimethylhydrazine dihydrochloride in rats. The tumor-promoting role of PI3-K/Akt/PTEN signal transduction pathway and its association with anti-apoptotic family of proteins are also observed. Both Diclofenac and Curcumin downregulated the PI3-K and Akt expression while promoting the apoptotic mechanism. Diclofenac and Curcumin administration significantly increased the expression of pro-apoptotic Bcl-2 family members (Bad and Bax) while decreasing the anti-apoptotic Bcl-2 protein. An up-regulation of cysteine protease family apoptosis executioner, such as caspase-3 and -9, is seen. Diclofenac and Curcumin inhibited the Bcl-2 protein by directly interacting at the active site by multiple hydrogen bonding, as also evident by negative glide score of Bcl-2. These drugs stimulated apoptosis by increasing reactive oxygen species (ROS) generation and simultaneously decreasing the mitochondrial membrane potential (ΔΨ M). Diclofenac and Curcumin showed anti-neoplastic effects by downregulating PI3-K/Akt/PTEN pathway, inducing apoptosis, increasing ROS generation, and decreasing ΔΨ M. The anti-neoplastic and apoptotic effects were found enhanced when both Diclofenac and Curcumin were administered together, rather than individually.
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Affiliation(s)
- Chandan Rana
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
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Fatima A, Abdul ABH, Abdullah R, Karjiban RA, Lee VS. Binding mode analysis of zerumbone to key signal proteins in the tumor necrosis factor pathway. Int J Mol Sci 2015; 16:2747-66. [PMID: 25629232 PMCID: PMC4346863 DOI: 10.3390/ijms16022747] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 01/07/2015] [Indexed: 12/24/2022] Open
Abstract
Breast cancer is the second most common cancer among women worldwide. Several signaling pathways have been implicated as causative and progression agents. The tumor necrosis factor (TNF) α protein plays a dual role in promoting and inhibiting cancer depending largely on the pathway initiated by the binding of the protein to its receptor. Zerumbone, an active constituent of Zingiber zerumbet, Smith, is known to act on the tumor necrosis factor pathway upregulating tumour necrosis factor related apoptosis inducing ligand (TRAIL) death receptors and inducing apoptosis in cancer cells. Zerumbone is a sesquiterpene that is able to penetrate into the hydrophobic pockets of proteins to exert its inhibiting activity with several proteins. We found a good binding with the tumor necrosis factor, kinase κB (IKKβ) and the Nuclear factor κB (NF-κB) component proteins along the TNF pathway. Our results suggest that zerumbone can exert its apoptotic activities by inhibiting the cytoplasmic proteins. It inhibits the IKKβ kinase that activates the NF-κB and also binds to the NF-κB complex in the TNF pathway. Blocking both proteins can lead to inhibition of cell proliferating proteins to be downregulated and possibly ultimate induction of apoptosis.
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Affiliation(s)
- Ayesha Fatima
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Ahmad Bustamam Hj Abdul
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Rasedee Abdullah
- UPM-MAKNA Cancer Research Laboratory, Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Roghayeh Abedi Karjiban
- Department of Chemistry, Faculty of Science, University Putra Malaysia, 43400 Serdang, Malaysia.
| | - Vannajan Sanghiran Lee
- Department of Chemistry, Faculty of Science, University Malaya, Petaling Jaya, 50603 Selangor, Malaysia.
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Vaish V, Rana C, Piplani H, Vaiphei K, Sanyal SN. Sulindac and Celecoxib regulate cell cycle progression by p53/p21 up regulation to induce apoptosis during initial stages of experimental colorectal cancer. Cell Biochem Biophys 2014; 68:301-19. [PMID: 23857431 DOI: 10.1007/s12013-013-9711-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In the present study we have elaborated the putative mechanisms could be followed by the non-steroidal anti-inflammatory drugs (NSAIDs) viz. Sulindac and Celecoxib in the regulation of cell cycle checkpoints along with tumor suppressor proteins to achieve their chemopreventive effects in the initial stages of experimental colorectal cancer. Male Sprague-Dawley rats were administered with 1,2-dimethylhydrazine dihydrochloride (DMH) to produce early stages of colorectal carcinogenesis. The mRNA expression profiles of various target genes were analyzed by RT-PCR and validated by quantitative real-time PCR, whereas protein expression was analyzed by Western blotting. Nuclear localization of transcription factors or other nuclear proteins was analyzed by electrophoretic mobility shift assay and immunofluorescence. Flowcytometry was performed to analyze the differential apoptotic events and cell cycle regulation. Molecular docking studies with different target proteins were also performed to deduce the various putative mechanisms of action followed by Sulindac and Celecoxib. We observed that DMH administration has abruptly increased the proliferation of colonic cells which is macroscopically visible in the form of multiple plaque lesions and co-relates with the disturbed molecular mechanisms of cell cycle regulation. However, co-administration of NSAIDs has shown regulatory effects on cell cycle checkpoints via induction of various tumor suppressor proteins. We may conclude that Sulindac and Celecoxib could possibly follow p53/p21 mediated regulation of cell proliferation, where down regulation of NF-κB signaling and activation of PPARγ might serve as important additional events in vivo.
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Affiliation(s)
- Vivek Vaish
- Department of Biophysics, Basic Medical Science Building, Panjab University, Chandigarh, 160014, India
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Saini MK, Sanyal SN. Targeting angiogenic pathway for chemoprevention of experimental colon cancer using C-phycocyanin as cyclooxygenase-2 inhibitor. Biochem Cell Biol 2014; 92:206-18. [DOI: 10.1139/bcb-2014-0016] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
An angiogenic pathway was studied that involved stromal tissue degradation with matrix metalloproteinases (MMPs), vesicular endothelial growth factor-A (VEGF-A), and hypoxia inducible factor-1α (HIF-1α) mediated growth regulation in a complex interaction with chemokines, such as monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-1β (MIP-1β). Gene and protein expression was studied with real-time PCR, Western immunoblot, and immunofluorescence. Morphological and histopathological analysis of tumor was done, as also the activity of MMPs and HIF-1α by gelatin zymography and ELISA. Binding interactions of proteins were studied by molecular docking. Piroxicam, a traditional NSAID and C-phycocyanin, a biliprotein from Spirulina platensis, were utilized in the chemoprevention of DMH-induced rat colon cancer. A significant number of tumors was evident in DMH treated animals, while with piroxicam and C-phycocyanin, the number and size of tumors/lesions were reduced. Colonic tissues showed severe dysplasia, tubular adenoma, and adenocarcinoma from DMH, with invasive features along with signet ring cell carcinoma. No occurrence of carcinoma was detected in either of the drug treatments or in a combination regimen. An elevated VEGF-A, MMP-2, and MMP-9 level was observed, which is required for metastasis and invasion into surrounding tissues. Drugs induced chemoprevention by down-regulating these proteins. Piroxicam docked in VEGF-A binding site of VEGF-A receptors i.e., VEGFR1 and VEGFR2, while phycocyanobilin (a chromophore of C-phycocyanin) docked with VEGFR1 alone. HIF-1α is up-regulated which is associated with increased oxygen demand and angiogenesis. MCP-1 and MIP-1β expression was also found altered in DMH and regulated by the drugs. Anti-angiogenic role of piroxicam and C-phycocyanin is well demonstrated.
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Aegle marmelos fruit extract abates dextran sodium sulfate induced acute colitis in mice: Repression of pro-inflammatory cytokines during colonic inflammation. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.bionut.2014.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Vaish V, Piplani H, Rana C, Sanyal SN. Angiostatic properties of sulindac and celecoxib in the experimentally induced inflammatory colorectal cancer. Cell Biochem Biophys 2013; 66:205-27. [PMID: 23149858 DOI: 10.1007/s12013-012-9469-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Initiation of various cancers has been observed to be regulated via a prolonged inflammatory state in the tissues. However, molecular role of such a localized inflammation is not clear in the advanced stages of colorectal cancer. In this study, we have elaborated the role of various pro- and anti-inflammatory cytokines, transcription, and angiogenic factors in the progression of the 1,2-dimethylhydrazine dihydrochloride (DMH)-induced late phage colorectal cancer and also observed the chemopreventive role of the two non-steroidal anti-inflammatory drugs (NSAIDs), viz., Sulindac and Celecoxib. Carcinogenic changes were observed with morphological and histopathological studies, whereas mRNA and protein regulations of various biomolecules were identified via RT- or qRT-PCR, western blot and immunofluorescence analysis, respectively. Activity of inducible nitric oxide (NO) and cyclooxygenase-2 enzymes were analyzed using standard NO assay and prostaglandin E2 immunoassay, whereas activities of matrix metalloproteinases (MMP-2 and-9) were identified by gelatin zymography. Flowcytometry was performed for the relative quantification of the apoptotic events. Molecular docking studies of Sulindac and Celecoxib were also performed with different target proteins to observe their putative mechanisms of action. As a result, we found that DMH-treated animals were having over-expression of various pro-inflammatory cytokines (IL-1β, IL-2, and IFNγ), aberrant nuclear localization of activated cell survival transcription factors (NF-κB and Stat3) along with the increased incidence of activated angiogenic factors (MMP-2 and MMP-9) suggesting a marked role of inflammation in the tumor progression. However, NSAIDs co-administration has significantly reduced the angiogenic potential of the growing neoplasm.
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Affiliation(s)
- Vivek Vaish
- Department of Biophysics, Panjab University, Chandigarh, 160 014, India
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Banaganapalli B, Mulakayala C, Pulaganti M, Mulakayala N, Anuradha CM, Suresh Kumar C, Shaik NA, Yousuf Al-Aama J, Gudla D. Experimental and Computational Studies on Newly Synthesized Resveratrol Derivative: A New Method for Cancer Chemoprevention and Therapeutics? OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2013; 17:568-83. [DOI: 10.1089/omi.2013.0014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Babajan Banaganapalli
- DBT-Bioinformatics Infrastructure Facility, Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, India
- Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Chaitanya Mulakayala
- Department of Biosciences, Sri Satya Sai Institute of Higher Learning, Anantapur, India
| | - Madhusudana Pulaganti
- DBT-Bioinformatics Infrastructure Facility, Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, India
| | - Naveen Mulakayala
- Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, India
| | - CM Anuradha
- DBT-Bioinformatics Infrastructure Facility, Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, India
| | - Chitta Suresh Kumar
- DBT-Bioinformatics Infrastructure Facility, Department of Biochemistry, Sri Krishnadevaraya University, Anantapur, India
| | - Noor Ahmad Shaik
- Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Department of Genetic Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Jumana Yousuf Al-Aama
- Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Department of Genetic Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Dhananjaya Gudla
- Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, India
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Shafreen RMB, Selvaraj C, Singh SK, Pandian SK. Exploration of fluoroquinolone resistance in Streptococcus pyogenes: comparative structure analysis of wild-type and mutant DNA gyrase. J Mol Recognit 2013; 26:276-85. [PMID: 23595809 DOI: 10.1002/jmr.2270] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 01/16/2013] [Accepted: 01/29/2013] [Indexed: 12/20/2022]
Abstract
Quinolone resistance-determining region is known to be the druggability site of the target protein that undergoes frequent mutation and thus renders quinolone resistance. In the present study, ligands were tested for their inhibitory activity against DNA gyrase of Streptococcus pyogenes involved in DNA replication. In silico mutational analysis on modelled gyrase A revealed that GLU85 had the most possible interactions with all the ligands used for the study. The amino acid residue GLU85 had also been predicted with an essential role of maintaining the three-dimensional structure of the protein. When introduced with a mutation (GLU 85 LYS) on this particular residue, it had readily denatured the whole α-helix (from 80 to 90 amino acids). This was confirmed through the molecular dynamics simulation and revealed that this single mutation can cause many functional and structural changes. Furthermore, LYS85 mutation has altered the original secondary structure of the protein, which in turn led to the steric hindrance during the ligand-receptor interaction. The results based on the G-score revealed that ligands have reduced interaction with the mutant protein. The semisynthetic fluoroquinolone 6d, which is an exception, forms a strong interaction with the mutant protein and was experimentally verified using the antimicrobial test. Hence, the present study unravels the fact that mutation at the drug binding site is the major cause for different level of resistance by the S. pyogenes when exposed against the varying concentrations of the fluoroquinolones. Furthermore, a comparative assessment of quinolone derivative with the older generation fluoroquinolones will be of great impact for S. pyogenes-related infections.
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Affiliation(s)
- Raja Mohmed Beema Shafreen
- Bioinformatics Infrastructure Facility, Department of Biotechnology, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
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Piplani H, Rana C, Vaish V, Vaiphei K, Sanyal SN. Dolastatin, along with Celecoxib, stimulates apoptosis by a mechanism involving oxidative stress, membrane potential change and PI3-K/AKT pathway down regulation. Biochim Biophys Acta Gen Subj 2013; 1830:5142-56. [PMID: 23872169 DOI: 10.1016/j.bbagen.2013.07.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 07/04/2013] [Accepted: 07/08/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Phosphoinositide 3-kinase (PI3-K) is an important regulator of oncogenesis and apoptosis in various types of cancers including colon cancer. A combinatorial strategy of using Cyclooxygenase-2 inhibitor, Celecoxib and Dolastatin, a linear peptide from marine mollusks of Indian Ocean origin has shown anti-neoplastic effects in colon cancer in a rat model. METHODS The signal transduction pathway of PI3-K/AKT and the downstream signaling proteins had been studied in an early stage of colon carcinogenesis (DMH induced) by gene and protein expression, apoptotic studies by colonocyte apoptotic bleb assay, intracellular calcium level by fluorescence spectrometry, mitochondrial membrane potential by Rhodamine 123 flow cytometry and Reactive oxygen species measurement. Molecular docking analysis was employed to study the interaction of oncogenic proteins and the ligand, Celecoxib and Dolastatin. RESULTS Apoptotic cell index was lowered with DMH while both the drugs increased it and inhibited PI3-K and AKT expression. Docking studies revealed both the proteins targeted by the drugs via an ATP binding site. An increased expression of GSK-3β, pro-apoptotic protein Bad, transcription factor Egr-1, tumor suppressor protein PTEN while a downregulation of G1-associated cell cycle protein, Cyclin D1 and increased intracellular calcium as well as reactive oxygen species were observed. Also, the number of cells having a higher mitochondrial membrane potential was lowered. CONCLUSION Celecoxib and Dolastatin inhibited the tumor development through regulation of the PI3-K/AKT pathway which can act as a novel target for these drugs. GENERAL SIGNIFICANCE The anti-cancer properties of Dolastatin, a peptide isolated from marine mollusks in colorectal cancer is shown.
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Affiliation(s)
- Honit Piplani
- Department of Biophysics, Panjab University, Chandigarh 160014, India
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31
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Role of cytokines and Jak3/Stat3 signaling in the 1,2-dimethylhydrazine dihydrochloride-induced rat model of colon carcinogenesis. Eur J Cancer Prev 2013; 22:215-28. [DOI: 10.1097/cej.0b013e3283584932] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Marzaro G, Guiotto A, Borgatti M, Finotti A, Gambari R, Breveglieri G, Chilin A. Psoralen derivatives as inhibitors of NF-κB/DNA interaction: synthesis, molecular modeling, 3D-QSAR, and biological evaluation. J Med Chem 2013; 56:1830-42. [PMID: 23414143 DOI: 10.1021/jm3009647] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Some new psoralen derivatives were synthesized and evaluated as inhibitors of NF-κB/DNA interaction, with the aim to investigate the structural determinants required to inhibit this interaction. Starting from molecular docking studies, several possible protein binding sites were proposed and several three-dimensional quantitative structure-activity relationship (3D-QSAR) models were built using the docked poses of 29 (the most active psoralen in the series) as templates for alignment of the inhibitors. The selected best model was validated through the prediction of the activity of 17 novel compounds. All the experimental data agreed with the computational experiments, supporting the reliability of the computational approach. The hypothesis about the interaction with NF-κB was also supported by surface plasmon resonance based assays using compound 29. All the collected data allowed the identification of compound 29 as a potential candidate for the development of pharmaceutical strategies against the inflammatory phenotype of cystic fibrosis.
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Affiliation(s)
- Giovanni Marzaro
- Dipartimento di Scienze del Farmaco, Università degli Studi di Padova, Via Marzolo 5, 35131 Padova, Italy
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33
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NSAIDs may regulate EGR-1-mediated induction of reactive oxygen species and non-steroidal anti-inflammatory drug-induced gene (NAG)-1 to initiate intrinsic pathway of apoptosis for the chemoprevention of colorectal cancer. Mol Cell Biochem 2013; 378:47-64. [DOI: 10.1007/s11010-013-1593-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 02/08/2013] [Indexed: 01/30/2023]
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34
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Rana C, Vaish V, Piplani H, Nehru B, Sanyal SN. Nuclear Factor-κB is expressed in early colon cancer and its down-regulation by Curcumin and Diclofenac is associated with the suppression of proliferation and the induction of apoptosis. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.bionut.2012.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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35
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Sundaram GSM, Harpstrite SE, Kao JLF, Collins SD, Sharma V. A new nucleoside analogue with potent activity against mutant sr39 herpes simplex virus-1 (HSV-1) thymidine kinase (TK). Org Lett 2012; 14:3568-71. [PMID: 22765027 DOI: 10.1021/ol300728a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nucleoside analogues, such as penciclovir, ganciclovir, acyclovir, and their fluoro-substituted derivatives, have wide utility as antivirals. Among these analogues, FHBG ((18)F-Fluorohydroxybutylguanine) is a well-validated PET (positron emission tomography) probe for monitoring reporter gene expression. To evaluate whether or not imposing rigidity into the flexible side chain of FHBG 4 could also impact its interaction, with amino acid residues within the binding site of HSV1-TK (Herpes Simplex Virus-1 Thymidine Kinase), thus influencing its cytotoxic activity. Herein, the synthesis of a new fluorinated nucleoside analogue 6 (conceived via ligand-docking studies) is reported. Agent 6 demonstrates selective activity against HeLa cells stably transfected with mutant HSV1-sr39TK and is also 47-fold more potent than FHBG.
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Affiliation(s)
- G S M Sundaram
- BRIGHT Institute, Molecular Imaging Center, Mallinckrodt Institute of Radiology, Department of Chemistry, Washington University School of Medicine , Box 8225, 510 South Kingshighway Boulevard, St. Louis, Missouri 63110, United States
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36
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Orlikova B, Schnekenburger M, Zloh M, Golais F, Diederich M, Tasdemir D. Natural chalcones as dual inhibitors of HDACs and NF-κB. Oncol Rep 2012; 28:797-805. [PMID: 22710558 PMCID: PMC3583578 DOI: 10.3892/or.2012.1870] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 05/04/2012] [Indexed: 01/30/2023] Open
Abstract
Histone deacetylase enzymes (HDACs) are emerging as a promising biological target for cancer and inflammation. Using a fluorescence assay, we tested the in vitro HDAC inhibitory activity of twenty-one natural chalcones, a widespread group of natural products with well-known anti-inflammatory and antitumor effects. Since HDACs regulate the expression of the transcription factor NF-κB, we also evaluated the inhibitory potential of the compounds on NF-κB activation. Only four chalcones, isoliquiritigenin (no. 10), butein (no. 12), homobutein (no. 15) and the glycoside marein (no. 21) showed HDAC inhibitory activity with IC50 values of 60–190 μM, whereas a number of compounds inhibited TNFα-induced NF-κB activation with IC50 values in the range of 8–41 μM. Interestingly, three chalcones (nos. 10, 12 and 15) inhibited both TNFα-induced NF-κB activity and total HDAC activity of classes I, II and IV. Molecular modeling and docking studies were performed to shed light into dual activity and to draw structure-activity relationships among chalcones (nos. 1–21). To the best of our knowledge this is the first study that provides evidence for HDACs as potential drug targets for natural chalcones. The dual inhibitory potential of the selected chalcones on NF-κB and HDACs was investigated for the first time. This study demonstrates that chalcones can serve as lead compounds in the development of dual inhibitors against both targets in the treatment of inflammation and cancer.
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Affiliation(s)
- B Orlikova
- Laboratory of Molecular and Cellular Biology of Cancer, Cancer and Blood Research Foundation, Kirchberg Hospital, Luxembourg, Luxembourg
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Piplani H, Vaish V, Rana C, Sanyal SN. Up-regulation of p53 and mitochondrial signaling pathway in apoptosis by a combination of COX-2 inhibitor, Celecoxib and Dolastatin 15, a marine mollusk linear peptide in experimental colon carcinogenesis. Mol Carcinog 2012; 52:845-58. [PMID: 22623379 DOI: 10.1002/mc.21925] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 04/07/2012] [Accepted: 04/24/2012] [Indexed: 11/06/2022]
Abstract
Programmed cell death, also known as apoptosis, is an active process occurring in eukaryotic cells and it depends on various sets of pro and anti-apoptotic proteins. Chemoprevention of colorectal cancer can be achieved by inducing apoptosis using synthetic compound, Celecoxib and natural peptide, Dolastatin 15 in an effective manner. But the apoptotic signaling by these two drugs remain unclear. The present study was thus focused on the role of Bcl2 family of proteins and their interplay with p53 in rats during the chemoprevention by these two drugs. After treatment for 6 wk with 1, 2-dimethylhydrazine (DMH), animals showed a marked occurrence of multiple plaque lesions. However, a simultaneous treatment with Celecoxib and Dolastatin 15 decreases such number to a significant level. DMH treatment also decreases the number of apoptotic cells in the colonic enterocytes which were corrected to the normal level by Celecoxib and Dolastatin 15. An increased expression of Bcl2 while other proteins like Bax, Apaf-1, cyt c, and caspases in the apoptotic pathway, and the tumor suppressor proteins, p53 and p21 get down-regulated after DMH treatment which were reverted back to normal with Celecoxib and Dolastatin 15. Also, cells having high mitochondrial membrane potential had been seen to increase to significant levels which were reduced after the administration of these anti-inflammatory drugs. In silico molecular docking studies also showed that Dolastatin 15 and Celecoxib may bind to the active site pocket of Bcl2 , thus revealing the direct target of Dolastatin 15 and Celecoxib apart from binding to COX-2.
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Affiliation(s)
- Honit Piplani
- Department of Biophysics, Panjab University, Chandigarh, India
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Corilagin is a potent inhibitor of NF-kappaB activity and downregulates TNF-alpha induced expression of IL-8 gene in cystic fibrosis IB3-1 cells. Int Immunopharmacol 2012; 13:308-15. [PMID: 22561123 DOI: 10.1016/j.intimp.2012.04.010] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 04/04/2012] [Accepted: 04/18/2012] [Indexed: 01/21/2023]
Abstract
Corilagin (beta-1-O-galloyl-3,6-(R)-hexahydroxydiphenoyl-d-glucose), a gallotannin identified in several plants, including Phyllanthus urinaria, has been shown to exhibit versatile medicinal activities. As far as possible anti-inflammatory effects of corilagin, only few reports are available, and the potential use of corilagin as possible therapeutic molecule for cystic fibrosis has not been evaluated. In the present paper we report experiments aimed at determining the activity of corilagin on nuclear factor kappaB (NF-kappaB) binding to DNA target and on the expression of the major pro-inflammatory gene involved in cystic fibrosis, interleukin-8 (IL-8). Both IL-8 mRNA content and IL-8 protein secretion were analyzed in cystic fibrosis bronchial IB3-1 cells stimulated by tumor necrosis factor-alpha (TNF-alpha), one of the most potent pro-inflammatory agents. The data obtained demonstrate that corilagin binds to NF-kappaB, inhibits NF-kappaB/DNA interactions and affects IL-8 gene expression in TNF-alpha treated IB3-1 cells. In addition, corilagin inhibits TNF-alpha induced secretion of MCP-1 and RANTES, exhibiting low or no effect on the release of G-CSF, IL-6 and VEGF. Therefore, corilagin might be of interest for experimental anti-inflammatory therapy of cystic fibrosis.
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Borgatti M, Chilin A, Piccagli L, Lampronti I, Bianchi N, Mancini I, Marzaro G, Francesco dall’Acqua, Guiotto A, Gambari R. Development of a novel furocoumarin derivative inhibiting NF-κB dependent biological functions: Design, synthesis and biological effects. Eur J Med Chem 2011; 46:4870-7. [DOI: 10.1016/j.ejmech.2011.07.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 07/13/2011] [Accepted: 07/18/2011] [Indexed: 12/15/2022]
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Gambari R. Predictive analyses of biological effects of natural products: from plant extracts to biomolecular laboratory and computer modeling. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:383290. [PMID: 19752166 PMCID: PMC3135393 DOI: 10.1093/ecam/nep096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2009] [Accepted: 06/25/2009] [Indexed: 02/07/2023]
Abstract
Year by year, the characterization of the biological activity of natural products is becoming more competitive and complex, with the involvement in this research area of experts belonging to different scientific fields, including chemistry, biochemistry, molecular biology, immunology and bioinformatics. These fields are becoming of great interest for several high-impact scientific journals, including eCAM. The available literature in general, and a survey of reviews and original articles recently published, establishes that natural products, including extracts from medicinal plants and essential oils, retain interesting therapeutic activities, including antitumor, antiviral, anti-inflammatory, pro-apoptotic and differentiating properties. In this commentary, we focus attention on interest in networks based on complementary activation and comparative evaluation of different experimental strategies applied to the discovery and characterization of bioactive natural products. A representative flow chart is shown in the paper.
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Affiliation(s)
- Roberto Gambari
- Department of Biochemistry and Molecular Biology, Section of Molecular Biology, Via Fossato di Mortara, 74, 44100 Ferrara, Italy
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Piccagli L, Fabbri E, Borgatti M, Bianchi N, Bezzerri V, Mancini I, Nicolis E, Dechecchi C, Lampronti I, Cabrini G, Gambari R. Virtual Screening against p50 NF-κB Transcription Factor for the Identification of Inhibitors of the NF-κB-DNA Interaction and Expression of NF-κB Upregulated Genes. ChemMedChem 2009; 4:2024-33. [DOI: 10.1002/cmdc.200900362] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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42
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Tsai KC, Teng LW, Shao YM, Chen YC, Lee YC, Li M, Hsiao NW. The first pharmacophore model for potent NF-κB inhibitors. Bioorg Med Chem Lett 2009; 19:5665-9. [DOI: 10.1016/j.bmcl.2009.08.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2009] [Revised: 08/04/2009] [Accepted: 08/05/2009] [Indexed: 11/28/2022]
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