1
|
Kalimuthu AK, Parasuraman P, Sivakumar P, Murugesan S, Arunachalam S, Pandian SRK, Ravishankar V, Ammunje DN, Sampath M, Panneerselvam T, Kunjiappan S. In silico, in vitro screening of antioxidant and anticancer potentials of bioactive secondary metabolites from an endophytic fungus (Curvularia sp.) from Phyllanthus niruri L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:48908-48925. [PMID: 35201581 DOI: 10.1007/s11356-022-19249-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
The main objective of this research work is to discover novel and efficient phytochemical substances from endophytic fungus found in medicinal plants. Curvularia geniculata L. (C. geniculata L.), an endophytic fungus isolated from Phyllanthus niruri L. (P. niruri L.), was tested against hepatoma cell lines (HepG2) in order to screen their antioxidant and anticancer potentials. The profiling of phytochemicals from the fungal extract was characterized using gas chromatography-mass spectrometry (GC-MS), and molecular docking was done for the identified compounds against one of the potential receptors predominantly present in the hepatocellular carcinoma cell lines. Among the phytochemicals found, 2-methyl-7-phenylindole had the highest binding affinity (- 8.8 kcal mol-1) for the epidermal growth factor receptor (EGFR). The stability of 2-methyl-7-phenylindole in the EGFR-binding pockets was tested using in silico molecular dynamics simulation. The fungal extract showed the highest antioxidant activity as measured by DPPH, ABTS radical scavenging, and FRAP assays. In vitro cytotoxicity assay of fungal extract demonstrated the concentration-dependent cytotoxicity against HepG2 cells after 24 h, and the IC50 (50% cell death) value was estimated to be 62.23 μg mL-1. Typical morphological changes such as condensation of nuclei and deformed membrane structures are indicative of ongoing apoptosis. The mitochondria of HepG2 cells were also targeted by the endophytic fungal extract, which resulted in substantial generation of reactive oxygen species (ROS) leading to the destruction of mitochondrial transmembrane potential integrity. These outcomes suggest that the ethyl acetate extract of C. geniculata L. has the potential to be an antioxidant agent and further to be exploited in developing potential anticancer agents.
Collapse
Affiliation(s)
- Arjun Kumar Kalimuthu
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, 626126, Tamil Nadu, India
| | - Pavadai Parasuraman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, M.S. Ramaiah University of Applied Sciences, Bengaluru, 560054, Karnataka, India
| | - Pandian Sivakumar
- School of Petroleum Technology, Pandit Deendayal Energy University, Gandhinagar, 382426, Gujarat, India
| | - Sankaranarayanan Murugesan
- Department of Pharmacy, Birla Institute of Technology & Science Pilani, Pilani Campus, Pilani, 333031, Rajasthan, India
| | - Sankarganesh Arunachalam
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, 626126, Tamil Nadu, India
| | - Sureshbabu Ram Kumar Pandian
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, 626126, Tamil Nadu, India
| | - Vigneshwaran Ravishankar
- Department of Biotechnology, Mepco Schlenk Engineering College, Sivakasi, 626005, Tamil Nadu, India
| | - Damodar Nayak Ammunje
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, M.S. Ramaiah University of Applied Sciences, Bengaluru, 560054, Karnataka, India
| | - Muthukumar Sampath
- Department of Bioengineering, Birla Institute of Technology Mesra, Ranchi-835215, Mesra, Jharkhand, India
| | - Theivendran Panneerselvam
- Department of Pharmaceutical Chemistry, Swamy Vivekanandha College of Pharmacy, Tiruchengodu, 637205, Tamil Nadu, India
| | - Selvaraj Kunjiappan
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Srivilliputhur, 626126, Tamil Nadu, India.
| |
Collapse
|
2
|
Dhara S, Saha M, Das AR. Ligand-free access to benzisothiazolones and benzisoselenazolones through NiFe 2O 4 catalyzed concomitant annulation of 2-halobenzanilides with chalcogens and their late-stage transformations. NEW J CHEM 2022. [DOI: 10.1039/d2nj04326b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A practical non-hazardous one-pot protocol for the synthesis of benzisothiazolones and benzisoselenazolones, involving magnetically retrievable nano-nickel ferrite catalyzed tandem annulation between 2-halobenzanilides and elemental S8 or Se.
Collapse
Affiliation(s)
- Samiran Dhara
- University of Calcutta, Faculty Council for Post-Graduate Studies in Science, Kolkata, India
| | - Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata, India
| |
Collapse
|
3
|
Nandakumar N, Gopinath P, Gopas J, Muraleedharan KM. Benzisothiazolone Derivatives Exhibit Cytotoxicity in Hodgkin's Lymphoma Cells through NF-κB Inhibition and are Synergistic with Doxorubicin and Etoposide. Anticancer Agents Med Chem 2021; 20:715-723. [PMID: 32053083 DOI: 10.2174/1871520620666200213103513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 12/01/2019] [Accepted: 01/12/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The authors investigated the NF-κB inhibitory role of three Benzisothiazolone (BIT) derivatives (1, 2 and 3) in Hodgkin's Lymphoma cells (L428) which constitutively express activated NF-κB. All three compounds showed dose-dependent NF-κB inhibition (78.3, 70.7 and 34.6%) in the luciferase reporter gene assay and were found cytotoxic at IC50 values of 3.3μg/ml, 4.35μg/ml and 13.8μg/ml, respectively by the XTT assay. BIT 1and BIT 2 (but not BIT 3) suppressed both NF-κB subunits p50 and p65 in cytoplasmic and nuclear extracts in a concentration-dependent manner. Furthermore, BIT 1 showed a moderate synergistic effect with the standard chemotherapy drugs etoposide and doxorubicin, whereas BIT 2 and 3 showed a moderate additive effect to antagonistic effect. Cisplatin exhibited an antagonist effect on all the compounds tested under various concentrations, except in the case of 1.56μg/ml of BIT 3 with 0.156μg/ml of cisplatin. The compounds also inhibited the migration of adherent human lung adenocarcinoma cells (A549) in vitro. We conclude that especially BIT 1 and BIT 2 have in vitro anti-inflammatory and anti-cancer activities, which can be further investigated for future potential therapeutic use. METHODS Inspired by the electrophilic sulfur in Nuphar alkaloids, monomeric and dimeric benzisothiazolones were synthesized from dithiodibenzoic acid and their NF-κB inhibitory role was explored. NF-κB inhibition and cytotoxicity of the synthesized derivatives were studied using luciferase reporter gene assay and XTTassay. Immunocytochemistry studies were performed using L428 cells. Cell migration assay was conducted using the A549 cell line. L428 cells were used to conduct combination studies and the results were plotted using CompuSyn software. RESULTS Benzisothiazolone derivatives exhibited cytotoxicity in Hodgkin's Lymphoma cells through NF-κB inhibition. Potent compounds showed suppression of both NF-κB subunits p50 and p65 in a concentrationdependent manner, both in cytoplasmic and nuclear extracts. Combination studies suggest that benzisothiazolone derivatives possess a synergistic effect with etoposide and doxorubicin. Furthermore, the compounds also inhibited the migration of A549 cells. CONCLUSION Benzisothiazolones bearing one or two electrophilic sulfur atoms as part of the heterocyclic framework exhibited cytotoxicity in Hodgkin's Lymphoma cells through NF-κB inhibition. In addition, these derivatives also exhibited a synergistic effect with etoposide and doxorubicin along with the ability to inhibit the migration of A549 cells. Our study suggests that BIT-based new chemical entities could lead to potential anticancer agents.
Collapse
Affiliation(s)
- Natarajan Nandakumar
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and Oncology Laboratory, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Department of Bioengineering, Clemson University, Clemson, SC, United States
| | | | - Jacob Gopas
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences and Oncology Laboratory, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | | |
Collapse
|
4
|
Guo JR, Gong JF, Song MP. Nickel(ii)-catalyzed C(sp 2)-H sulfuration/annulation with elemental sulfur: selective access to benzoisothiazolones. Org Biomol Chem 2019; 17:5029-5037. [PMID: 31045200 DOI: 10.1039/c9ob00449a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The first nickel(ii)-catalyzed direct sulfuration/annulation of C(sp2)-H bonds with elemental sulfur has been achieved by using 2-amino alkylbenzimidazole (MBIP-amine) as a N,N-bidentate directing group. This strategy tolerates a wide range of functional groups, furnishing structurally diverse benzoisothiazolone derivatives with benzimidazole skeletons in moderate to excellent yields in a simple and efficient way.
Collapse
Affiliation(s)
- Jun-Ru Guo
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Jun-Fang Gong
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Mao-Ping Song
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| |
Collapse
|
5
|
Shyamsivappan S, Vivek R, Saravanan A, Arasakumar T, Subashini G, Suresh T, Shankar R, Mohan PS. Synthesis and X-ray study of dispiro 8-nitroquinolone analogues and their cytotoxic properties against human cervical cancer HeLa cells. MEDCHEMCOMM 2019; 10:439-449. [PMID: 31015907 DOI: 10.1039/c8md00482j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/15/2019] [Indexed: 12/25/2022]
Abstract
A series of unique dispiro analogues containing an oxindole pyrrolidine 8-nitroquinolone hybrid has been obtained through a one-pot three-component 1,3-dipolar cycloaddition of azomethine ylides generated in situ from the condensation of isatins and benzylamine with (E)-3-arylidene-2,3-dihydro-8-nitro-4-quinolones. The structures of the newly synthesized compounds were characterized by using different spectroscopic techniques and by X-ray diffraction studies of their regio- and stereochemistry. All the synthesized compounds were screened for in vitro cytotoxic activity against the human cervical cancer cell line HeLa. The compounds have exhibited potent inhibition against human cervical cancer cells and insignificant toxicity to normal cells. The compounds 6d, 6a, 6h, 6b, and 6e induced apoptosis of HeLa cells, through ROS influx. The expression levels of proteins involved in the mitochondrion-related pathways were detected, and Western blot analysis showed that apoptosis occurred via activation of caspase-3.
Collapse
Affiliation(s)
- Selvaraj Shyamsivappan
- School of Chemical Sciences , Bharathiar University , Coimbatore , Tamil Nadu , India . ;
| | - Raju Vivek
- Chemical Biology , Rajiv Gandhi Centre for Biotechnology , Thiruvananthapuram , Kerala , India
| | - Arjunan Saravanan
- DRDO-BU CLS , Bharathiar University Campus , Coimbatore , Tamil Nadu , India
| | - Thangaraj Arasakumar
- School of Chemical Sciences , Bharathiar University , Coimbatore , Tamil Nadu , India . ;
| | - Gopalan Subashini
- Department of Chemistry , P.S.G.R. Krishnammal College For Women , Coimbatore , Tamil Nadu , India
| | - Thangaraj Suresh
- School of Chemical Sciences , Bharathiar University , Coimbatore , Tamil Nadu , India . ;
| | - Ramasamy Shankar
- Department of Physics , Bharathiar University , Coimbatore , Tamil Nadu , India
| | | |
Collapse
|
6
|
Yang L, Song L, Tang S, Li L, Li H, Yuan B, Yang G. Co-Catalyzed Intramolecular S-N Bond Formation in Water for 1,2-Benzisothiazol-3(2H
)-ones and 1,2,4-Thiadiazoles Synthesis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801642] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Liting Yang
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Lijuan Song
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Shanyu Tang
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Longjia Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Heng Li
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Bingxin Yuan
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| | - Guanyu Yang
- College of Chemistry and Molecular Engineering; Zhengzhou University; 100 Kexue Avenue 450001 Zhengzhou P. R. China
| |
Collapse
|
7
|
Yang K, Zhang H, Niu B, Tang T, Ge H. Benzisothiazol-3-ones through a Metal-Free Intramolecular N-S Bond Formation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801090] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ke Yang
- School of Petrochemical Engineering; Changzhou University; 1 Gehu Road 213164 Changzhou Jiangsu China
- Department of Chemistry and Chemical Biology; Indiana University Purdue, University Indianapolis; 46202 Indianapolis Indiana USA
| | - Hao Zhang
- School of Petrochemical Engineering; Changzhou University; 1 Gehu Road 213164 Changzhou Jiangsu China
| | - Ben Niu
- Department of Chemistry and Chemical Biology; Indiana University Purdue, University Indianapolis; 46202 Indianapolis Indiana USA
| | - Tiandi Tang
- School of Petrochemical Engineering; Changzhou University; 1 Gehu Road 213164 Changzhou Jiangsu China
| | - Haibo Ge
- Department of Chemistry and Chemical Biology; Indiana University Purdue, University Indianapolis; 46202 Indianapolis Indiana USA
| |
Collapse
|
8
|
Yu TQ, Hou YS, Jiang Y, Xu WX, Shi T, Wu X, Zhang JC, He D, Wang Z. Potassium bromide catalyzed N S bond formation via oxidative dehydrogenation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Broad spectrum anti-infective properties of benzisothiazolones and the parallels in their anti-bacterial and anti-fungal effects. Bioorg Med Chem Lett 2017; 27:1291-1295. [PMID: 28159413 DOI: 10.1016/j.bmcl.2017.01.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 01/06/2017] [Accepted: 01/11/2017] [Indexed: 11/22/2022]
Abstract
Various mono- and bis-benzisothiazolone derivatives were synthesized and screened against different strains of bacteria and fungi in order to understand the effect of multiple electrophilic sulfur atoms and substitution pattern in the immediate vicinity of reactive sulfur. Staphyllococcus aureus-ATCC 7000699, MRSA and S. aureus-ATCC 29213 (Quality Control strain) were more susceptible to this class of compounds, and the most potent derivative 1.15 had MIC50 of 0.4μg/mL (cf. Gentamicin=0.78μg/mL). CLogP value, optimally in the range of 2.5-3.5, appeared to contribute more to the activity than the steric and electronic effects of groups attached at nitrogen. By and large, their anti-fungal activities also followed a similar trend with respect to the structure and CLogP values. The best potency of IC50=0.1μg/mL was shown by N-benzyl derivative (1.7) against Aspergillus fumigatus; it was also potent against Candida albicans, Cryptococcus neoformans, Sporothrix schenckii, and Candida parapsilosis with IC50 values ranging from 0.4 to 1.3μg/mL. Preliminary studies also showed that this class of compounds have the ability to target malaria parasite with IC50 values in low micromolar range, and improvement of selectivity is possible through structure optimization.
Collapse
|
10
|
Zheng Y, Tsuji G, Opoku-Temeng C, Sintim HO. Inhibition of P. aeruginosa c-di-GMP phosphodiesterase RocR and swarming motility by a benzoisothiazolinone derivative. Chem Sci 2016; 7:6238-6244. [PMID: 30034764 PMCID: PMC6024209 DOI: 10.1039/c6sc02103d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 06/15/2016] [Indexed: 01/18/2023] Open
Abstract
Various important cellular processes in bacteria are controlled by c-di-GMP, such as motility, biofilm formation and virulence factors production. C-di-GMP is synthesized from two molecules of GTP by diguanylate cyclases (DGCs) and its actions are terminated by EAL or HD-GYP domain phosphodiesterases (PDEs), which hydrolyze c-di-GMP to linear pGpG or GMP. Thus far the majority of efforts have been dedicated to the development of inhibitors of DGCs but not PDEs. This is probably because the old view was that inhibiting any c-di-GMP PDE would lead to biofilm formation, an undesirable phenotype. Recent data however suggest that some PDEs only change the localized (not global) concentration of c-di-GMP to increase bacterial virulence and do not affect biofilm formation. A challenge therefore is to be able to develop selective PDE inhibitors that inhibit virulence-associated PDEs but not inhibit PDEs that regulate bacterial biofilm formation. Using high throughput docking experiments to screen a library of 250 000 commercially available compounds against E. coli YahA (also called PdeL), a benzoisothiazolinone derivative was found to bind to the c-di-GMP binding site of YahA with favorable energetics. Paradoxically the in silico identified inhibitor (a benzoisothiazolinone derivative) did not inhibit the hydrolysis of c-di-GMP by YahA, the model PDE that was used in the docking, but instead inhibited RocR, which is a PDE from the opportunistic pathogen P. aeruginosa (PA). RocR promotes bacterial virulence but not biofilm dispersal, making it an ideal PDE to target for anti-virulence purposes. This newly identified RocR ligand displayed some selectivity and did not inhibit other P. aeruginosa PDEs, such as DipA, PvrR and PA4108. DipA, PvrR and PA4108 are key enzymes that reduce global c-di-GMP concentration and promote biofilm dispersal; therefore the identification of an inhibitor of a PA PDE, such as RocR, that does not inhibit major PDEs that modulate global c-di-GMP is an important step towards the development of selective c-di-GMP PDEs that could have interesting biomedical applications. The identified RocR ligand could also inhibit P. aeruginosa (PAO1) swarming but not swimming or biofilm formation. Rhamnolipid production was decreased, explaining the inhibition of swarming.
Collapse
Affiliation(s)
- Yue Zheng
- Department of Chemistry , Purdue University , 560 Oval Drive , West Lafayette , IN 47907 , USA .
- Center for Drug Discovery , Purdue University , 720 Clinic Drive , West Lafayette , IN 47907 , USA
- Graduate Program in Biochemistry , University of Maryland , College Park , MD 20742 , USA
| | - Genichiro Tsuji
- Department of Chemistry , Purdue University , 560 Oval Drive , West Lafayette , IN 47907 , USA .
- Center for Drug Discovery , Purdue University , 720 Clinic Drive , West Lafayette , IN 47907 , USA
| | - Clement Opoku-Temeng
- Department of Chemistry , Purdue University , 560 Oval Drive , West Lafayette , IN 47907 , USA .
- Center for Drug Discovery , Purdue University , 720 Clinic Drive , West Lafayette , IN 47907 , USA
- Graduate Program in Biochemistry , University of Maryland , College Park , MD 20742 , USA
| | - Herman O Sintim
- Department of Chemistry , Purdue University , 560 Oval Drive , West Lafayette , IN 47907 , USA .
- Center for Drug Discovery , Purdue University , 720 Clinic Drive , West Lafayette , IN 47907 , USA
| |
Collapse
|
11
|
Li T, Yang L, Ni K, Shi Z, Li F, Chen D. An efficient approach to construct benzisothiazol-3(2H)-ones via copper-catalyzed consecutive reaction of 2-halobenzamides and carbon disulfide. Org Biomol Chem 2016; 14:6297-303. [PMID: 27273742 DOI: 10.1039/c6ob00819d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An efficient copper-catalyzed reaction for the synthesis of benzisothiazol-3(2H)-ones has been developed, starting from easily available 2-halobenzamides and carbon disulfide, which gave the corresponding target products in 30-89% yield for 25 examples. The reaction proceeds via a consecutive process with S-C bond and S-N bond formation.
Collapse
Affiliation(s)
- Ting Li
- Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, 101 Longmian Avenue, Nanjing 211166, China.
| | | | | | | | | | | |
Collapse
|