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Sheida A, Farshadi M, Mirzaei A, Najjar Khalilabad S, Zarepour F, Taghavi SP, Hosseini Khabr MS, Ravaei F, Rafiei S, Mosadeghi K, Yazdani MS, Fakhraie A, Ghattan A, Zamani Fard MM, Shahyan M, Rafiei M, Rahimian N, Talaei Zavareh SA, Mirzaei H. Potential of Natural Products in the Treatment of Glioma: Focus on Molecular Mechanisms. Cell Biochem Biophys 2024:10.1007/s12013-024-01447-x. [PMID: 39150676 DOI: 10.1007/s12013-024-01447-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2024] [Indexed: 08/17/2024]
Abstract
Despite the waning of traditional treatments for glioma due to possible long-term issues, the healing possibilities of substances derived from nature have been reignited in the scientific community. These natural substances, commonly found in fruits and vegetables, are considered potential alternatives to pharmaceuticals, as they have been shown in prior research to impact pathways surrounding cancer progression, metastases, invasion, and resistance. This review will explore the supposed molecular mechanisms of different natural components, such as berberine, curcumin, coffee, resveratrol, epigallocatechin-3-gallate, quercetin, tanshinone, silymarin, coumarin, and lycopene, concerning glioma treatment. While the benefits of a balanced diet containing these compounds are widely recognized, there is considerable scope for investigating the efficacy of these natural products in treating glioma.
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Affiliation(s)
- Amirhossein Sheida
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Amirhossein Mirzaei
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shakiba Najjar Khalilabad
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Zarepour
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Seyed Pouya Taghavi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Sadat Hosseini Khabr
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Fatemeh Ravaei
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Sara Rafiei
- Endocrine Research Center, Institute of Endocrinology and Metabolism, Iran University of Medical Sciences (IUMS), Tehran, Iran
- Department of Internal Medicine, School of Medicine, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Kimia Mosadeghi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Sepehr Yazdani
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Ali Fakhraie
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Alireza Ghattan
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Masoud Zamani Fard
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Shahyan
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Moein Rafiei
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Neda Rahimian
- Endocrine Research Center, Institute of Endocrinology and Metabolism, Iran University of Medical Sciences (IUMS), Tehran, Iran.
- Department of Internal Medicine, School of Medicine, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran.
| | | | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Moss PE, Talanova GG, Fang Y, Thomas C, Thomas C. Spectroscopic studies of 7,8-diacetoxy-4-methylcoumarin and 7,8-dipentynoyl-4-methylcoumarin binding with calreticulin. LUMINESCENCE 2022; 37:1853-1863. [PMID: 35968883 DOI: 10.1002/bio.4362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 01/07/2023]
Abstract
Calreticulin (CRT) is a protein found mainly in the endoplasmic reticulum (ER) that maintains calcium levels and controls protein folding, but has recently been found at the cell surface, cytoplasm, and in the extracellular matrix. CRT participates in multiple physiological processes such as gene expression, the immune response, and cancer. Calreticulin has been shown to autoacetylate with the binding of preferred ligand 7,8-diacetoxy-4-methylcoumarin (DAMC). This project aims to develop a chemical biology approach to investigate importance of CRT acylating abilities on its nonendoplasmic reticulum functions by targeting the downstream substrates of CRT acetylation. Our goal was to use CRT to transfer a pentynoyl tag (using a novel ligand, DPeMC) to its substrates, which can then be used as a handle for protein identification. Molecular modelling using available data in the literature was used to approximate the binding interface between CRT and the acylation ligands. Molecular Operating Environment (MOE) software was used to perform sequence alignment, simulated annealing, positional refinement, and blind docking of acylated coumarins with the CRT model. Docking studies pointed to the P domain as the most thermodynamically and sterically favourable region for acylated coumarin binding with tryptophan residue 200 within the active site on CRT. Absorption and fluorescence spectra of all coumarin compounds in ethanol:PBS (1:9 v/v) solution were investigated. Stern-Volmer quenching constant (KSV ), binding constant (K), and number of binding sites (n) of each coumarin compound with CRT was determined. Our studies demonstrated that acyl coumarin compounds bind to CRT using a dynamic quenching mechanism, bind to a single binding site on the P domain, and that the protein-ligand interaction is spontaneous and exothermic.
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Affiliation(s)
- Patrice E Moss
- Department of Biological Sciences, Trinity Washington University, Washington, District of Columbia, USA
| | - Galina G Talanova
- Department of Chemistry, Howard University, Washington, District of Columbia, USA
| | - Yayin Fang
- Department of Chemistry, Howard University, Washington, District of Columbia, USA
| | - Courtney Thomas
- Department of Biological and Physical Sciences, South Carolina State University, Orangeburg, South Carolina, USA
| | - Courtney Thomas
- Department of Biological and Physical Sciences, South Carolina State University, Orangeburg, South Carolina
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Verma A, Arora A, Bhatt AN, Arya MB, Prasad AK, Parmar VS, Dwarakanath BS. Radiosensitization of calreticulin-overexpressing human glioma cell line by the polyphenolic acetate 7, 8-diacetoxy-4-methylcoumarin. Cancer Rep (Hoboken) 2021; 5:e1326. [PMID: 34472223 PMCID: PMC9780425 DOI: 10.1002/cnr2.1326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 10/17/2020] [Accepted: 11/16/2020] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Calreticulin (CRT), an endoplasmic reticulum-resident protein generally overexpressed in cancer cells, is associated with radiation resistance. CRT shows higher transacetylase activity, as shown by us earlier, in the presence of the polyphenolic acetates (like 7, 8-diacetoxy-4-methylcoumarin, DAMC) and modifies the activity of a number of proteins, thereby influencing cell signaling. AIM To investigate the relationship between CRT expression and radiation response in a human glioma cell line and to evaluate the radiomodifying effects of DAMC. METHODS AND RESULTS Studies were carried out in an established human glioma cell line (BMG-1) and its isogenic clone overexpressing CRT (CROE, CRT-overexpressing cells) by analyzing clonogenic survival, cell proliferation, micronuclei analysis, and protein levels by Western blotting as parameters of responses. CRT overexpression conferred resistance against radiation-induced cell death in CROE cells (D37 = 7.35 Gy, D10 = 12.6 Gy and D0 = 7.25 Gy) as compared to BMG-1 cells (D37 = 5.70 Gy, D10 = 9.2 Gy and D0 = 5.6 Gy). A lower level of radiation-induced micronuclei formation observed in CROE cells suggested that reduced induction and/or enhanced DNA repair partly contributed to the enhanced radioresistance. Consistent with this suggestion, we noted that CRT-mediated radioresistance was coupled with enhanced grp78 level and reduced P53 activation-mediated prodeath signaling, while no changes were noted in acetylation of histone H4. DAMC-enhanced radiation-induced delayed (secondary) apoptosis, which was higher in CROE cells. CONCLUSION CRT overexpression confers resistance against radiation-induced death of human glioma cells, which can be overcome by the polyphenolic acetate DAMC.
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Affiliation(s)
- Amit Verma
- Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Majumdar MargDelhiIndia,Present address:
PACT & Health LLC, BranfordConnecticut, 06405‐2546USA
| | - Aastha Arora
- Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Majumdar MargDelhiIndia
| | - Anant N Bhatt
- Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Majumdar MargDelhiIndia
| | | | - Ashok K Prasad
- Bioorganic Laboratory, Department of ChemistryUniversity of DelhiDelhiIndia
| | - Virinder S Parmar
- Bioorganic Laboratory, Department of ChemistryUniversity of DelhiDelhiIndia,Department of Chemistry and Environmental ScienceMedgar Evers College, The City University of New YorkBrooklynNew York
| | - Bilikere S Dwarakanath
- Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Majumdar MargDelhiIndia,Central Research FacilitySri Ramachandra Institute of Higher Education and ResearchChennaiIndia
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Joshi R, Singh P, Sharma NK, Ponnan P, Saluja D, Gambhir JK, Rawat DS, Parmar VS, Dwarakanath BS, Prasad AK, Raj HG. Site-directed mutagenesis in the P-domain of calreticulin transacylase identifies Lys-207 as the active site residue. 3 Biotech 2021; 11:113. [PMID: 33585151 DOI: 10.1007/s13205-021-02659-1] [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: 09/03/2020] [Accepted: 01/13/2021] [Indexed: 10/22/2022] Open
Abstract
In silico-docking studies from previous work have suggested that Lys-206 and lys-207 of calreticulin (CR) play a pivotal key role in its well-established transacetylation activity. To experimentally validate this prediction, we introduced three mutations at lysine residues of P-domain of CR: K → A, P mut-1 (K -206, -209), P mut-2 (K -206, -207) and P mut-3 (K -207, -209) and analyzed their immunoreactivity and acetylation potential. The clones of wild-type P-domain (P wt ) and three mutated P-domain (P mut-1, P mut-2 and P mut-3) were expressed in pTrcHis C vector and the recombinant P wt , P mut-1 , P mut-2 and P mut-3 proteins were purified by Ni-NTA affinity chromatography. Screening of the transacylase activity (TAase) by the Glutathione S Transferase (GST) assay revealed that the TAase activity was associated with the P wt and P mut-1 while P mut-2 and P mut-3 did not show any activity. The immune-reactivity to anti-lysine antibody was also retained only by the P mut-1 in which the Lys-207 was intact. Retention of the TAase activity and immunoreactivity of P mut-1 with mutations introduced at Lys-206, Lys-209, while its loss with a mutation at Lys-207 residue indicated that lysine-207 of P-domain constitutes the active site residue controlling TAase activity. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02659-1.
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Bhatt AN, Rai Y, Verma A, Pandey S, Kaushik K, Parmar VS, Arya A, Prasad AK, Dwarakanath BS. Non-Enzymatic Protein Acetylation by 7-Acetoxy-4-Methylcoumarin: Implications in Protein Biochemistry. Protein Pept Lett 2020; 27:736-743. [PMID: 32133945 DOI: 10.2174/0929866527666200305143016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 12/23/2019] [Accepted: 12/29/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND The semi-synthetic acetoxycoumarins are known to acetylate proteins using novel enzymatic Calreticulin Transacetylase (CRTAase) system in cells. However, the nonenzymatic protein acetylation by polyphenolic acetates is not known. OBJECTIVE To investigate the ability of 7-acetoxy-4-methyl coumarin (7-AMC) to acetylate proteins non-enzymatically in the test tube. METHODS We incubated 7-AMC with BSA and analyzed the protein acetylation using Western blot technique. Further, BSA induced biophysical changes in the spectroscopic properties of 7-AMC was analyzed using Fluorescence spectroscopy. RESULTS Using pan anti-acetyl lysine antibody, herein we demonstrate that 7-AMC acetylates Bovine Serum Albumin (BSA) in time and concentration dependent manner in the absence of any enzyme. 7-AMC is a relatively less fluorescent molecule compared to the parental compound, 7- hydroxy-4-methylcoumarin (7-HMC), however the fluorescence of 7-AMC increased by two fold on incubation with BSA, depending on the time of incubation and concentration of BSA. Analysis of the reaction mixture of 7-AMC and BSA after filtration revealed that the increased fluorescence is associated with the compound of lower molecular weight in the filtrate and not residual BSA, suggesting that the less fluorescent 7-AMC undergoes self-hydrolysis in the presence of protein to give highly fluorescent parental molecule 7-HMC and acetate ion in polar solvent (phosphate buffered saline, PBS). The protein augmented conversion of 7-AMC to 7-HMC was found to be linearly related to the protein concentration. CONCLUSION Thus protein acetylation induced by 7-AMC could also be non-enzymatic in nature and this molecule can be exploited for quantification of proteins.
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Affiliation(s)
- Anant Narayan Bhatt
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Yogesh Rai
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Amit Verma
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Sanjay Pandey
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
| | - Kumar Kaushik
- Department of Chemistry and Environmental Science, Medgar Evers College, The City University of New York, New York City, NY, United States
| | - Virinder S Parmar
- Department of Chemistry and Environmental Science, Medgar Evers College, The City University of New York, New York City, NY, United States
| | - Anu Arya
- V.P. Chest Institute, Delhi, India
| | - Ashok K Prasad
- Deparment of Chemistry, University of Delhi, Delhi, India
| | - Bilikere S Dwarakanath
- Institute of Nuclear Medicine and Allied Sciences, Brig. S.K. Majumdar Marg, Timarpur, Delhi, India
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Mitigation of radiation-induced gastro-intestinal injury by the polyphenolic acetate 7, 8-diacetoxy-4-methylthiocoumarin in mice. Sci Rep 2019; 9:14134. [PMID: 31575959 PMCID: PMC6773728 DOI: 10.1038/s41598-019-50785-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/18/2019] [Indexed: 12/28/2022] Open
Abstract
Radiation-induced intestinal injury (RIII) constitutes a crucial clinical element of acute radiation syndrome with life-threatening implications posing challenges in devising effective medical countermeasures. Herein, we report the potential of 7, 8-diacetoxy-4-methylthiocoumarin (DAMTC) to mitigate RIII following total-body irradiation (TBI) in C57BL/6 mice and underlying mechanisms. Administration of DAMTC 24 hours post TBI facilitated structural reconstitution and restoration of functional absorption linked to alleviation of radiation-induced apoptotic death of intestinal crypt progenitor/stem (ICPS) and villus stromal cells through induction of Bcl-2 family-mediated anti-apoptotic signalling. Reduction in TBI-induced DNA damage accumulation coupled with inhibition of cell cycle arrest through stimulation of anti-p53- and anti-p21-dependent synergistic signalling protected ICPS cells from radiation injury. Enhanced proliferation of crypt stem cells, induction of anti-oxidant defence, subjugation of TBI-induced lipid peroxidation and phenotypic polarization of intestinal macrophages to anti-inflammatory M2 class underlie amelioration of RIII. Stimulation of multiple mitigative signalling processes by DAMTC appeared to be associated with enhanced protein acetylation, an important regulator of cellular responses to radiation damage. Our findings establish the mitigative potential of DAMTC against RIII by hyper-acetylation-mediated epigenetic regulation, which triggers axes of anti-apoptotic and pro-survival pathways, enabling proliferation and maintenance of ICPS cells leading to epithelial regeneration.
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Wang G, Li Z, Tian H, Wu W, Liu C. Modification of sPD1 with CRT induces potent anti-tumor immune responses in vitro and in vivo. Biomed Pharmacother 2015; 76:57-64. [PMID: 26653551 DOI: 10.1016/j.biopha.2015.10.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/14/2015] [Indexed: 01/19/2023] Open
Abstract
As a key factor for tumor occurrence and development, tumor cells escape immune surveillance and inhibit the body immune killer effect through negative signaling pathways. In this research, we designed and expressed the fusion protein CRT-sPD1 to block PD1/PDL1 negative signal pathway, indirectly bind CRT to the tumor cell surface and to increase the cell immunogenicity activity. Results from western blotting, flow cytometry (FCM) and ELISA showed that the cell lines that stably express CRT, PD1 and CRT-sPD1 protein were obtained and the transfected cellular supernatant contained PD1 and CRT-sPD1 could bind to PDL1 on the surface of EL4 cells. Vitro experiments indicated the secreted mCRT-sPD1 protein could bind to PDL1 and enhance lymphocyte proliferation and CTL activity. We also found that fusion protein CRT-sPD1 could activate and induce the immune system to kill the tumor cells, specifically inhibit the tumor growth and prolong the survival period in mouse tumor model. And all these suggested that CRT-sPD1 could be used as drug development and utilization of cancer immunotherapy.
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Affiliation(s)
- Gongze Wang
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
| | - Zhiying Li
- The Second Clinical Medical College, China Three Gorges University, Yichang 443002, China
| | - Huiqun Tian
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
| | - Wei Wu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China
| | - Chaoqi Liu
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang 443002, China.
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Miri R, Nejati M, Saso L, Khakdan F, Parshad B, Mathur D, Parmar VS, Bracke ME, Prasad AK, Sharma SK, Firuzi O. Structure-activity relationship studies of 4-methylcoumarin derivatives as anticancer agents. PHARMACEUTICAL BIOLOGY 2015; 54:105-10. [PMID: 26017566 DOI: 10.3109/13880209.2015.1016183] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
CONTEXT Cancer is a leading cause of death worldwide and novel chemotherapeutic agents with better efficacy and safety profiles are much needed. Coumarins are natural polyphenolic compounds with important pharmacological activities, which are present in many dietary plants and herbal remedies. OBJECTIVES The objective of this study is to investigate natural and synthetic coumarin derivatives with considerable anticancer capacity against three human cancer cell lines. MATERIALS AND METHODS We synthesized 27 coumarin derivatives (mostly having 4-methyl moiety) and examined their cytotoxic effect on three human cancer cell lines, K562 (chronic myelogenous leukemia), LS180 (colon adenocarcinoma), and MCF-7 (breast adenocarcinoma) by MTT reduction assay. Screened compounds included 7-hydroxy-4-methylcoumarins (7-HMCs), 7-acetoxy-4-methylcoumarins (7-AMCs), and different dihydroxy-4-methylcoumarin (DHMC) and diacetoxy-4-methylcoumarin (DAMC) derivatives. Some compounds with methoxy, amine, and bromine substitutions were also examined. RESULTS 7,8-DHMCs bearing alkyl groups at C3 position were the most effective subgroup, and of which, the most potent is compound 11, with an n-decyl chain at C3, which had IC50 values of 42.4, 25.2, and 25.1 µM against K562, LS180, and MCF-7 cells, respectively. The second most active subgroup was 7,8-DAMCs containing ethoxycarbonylmethyl and ethoxycarbonylethyl moieties at C3 position. Compound 27 (6-bromo-4-bromomethyl-7-hydroxycoumarin), the only derivative containing bromine also showed reasonable cytotoxic activities (IC50 range: 32.7-45.8 µM). DISCUSSION AND CONCLUSION This structure-activity relationship (SAR) study of 4-methylcoumarins shows that further investigation of these derivatives may lead to the discovery of novel anticancer agents.
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Affiliation(s)
- Ramin Miri
- a Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences , Shiraz , Iran
| | - Maryam Nejati
- a Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences , Shiraz , Iran
| | - Luciano Saso
- b Department of Physiology and Pharmacology "Vittorio Erspamer" , Sapienza University of Rome , Rome , Italy
| | - Fatemeh Khakdan
- a Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences , Shiraz , Iran
| | - Badri Parshad
- c Bioorganic Laboratory, Department of Chemistry , University of Delhi , Delhi , India , and
| | - Divya Mathur
- c Bioorganic Laboratory, Department of Chemistry , University of Delhi , Delhi , India , and
| | - Virinder S Parmar
- c Bioorganic Laboratory, Department of Chemistry , University of Delhi , Delhi , India , and
- d Laboratory of Experimental Cancer Research , University Hospital, University of Gent , Gent , Belgium
| | - Marc E Bracke
- d Laboratory of Experimental Cancer Research , University Hospital, University of Gent , Gent , Belgium
| | - Ashok K Prasad
- c Bioorganic Laboratory, Department of Chemistry , University of Delhi , Delhi , India , and
| | - Sunil K Sharma
- c Bioorganic Laboratory, Department of Chemistry , University of Delhi , Delhi , India , and
| | - Omidreza Firuzi
- a Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences , Shiraz , Iran
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