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Chakraborty P, Lubna S, Bhuin S, K. D, Chakravarty M, Jamma T, Yogeeswari P. Targeting hexokinase 2 for oral cancer therapy: structure-based design and validation of lead compounds. Front Pharmacol 2024; 15:1346270. [PMID: 38529190 PMCID: PMC10961359 DOI: 10.3389/fphar.2024.1346270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/20/2024] [Indexed: 03/27/2024] Open
Abstract
The pursuit of small molecule inhibitors targeting hexokinase 2 (HK2) has significantly captivated the field of cancer drug discovery. Nevertheless, the creation of selective inhibitors aimed at specific isoforms of hexokinase (HK) remains a formidable challenge. Here, we present a multiple-pharmacophore modeling approach for designing ligands against HK2 with a marked anti-proliferative effect on FaDu and Cal27 oral cancer cell lines. Molecular dynamics (MD) simulations showed that the prototype ligand exhibited a higher affinity towards HK2. Complementing this, we put forth a sustainable synthetic pathway: an environmentally conscious, single-step process facilitated through a direct amidation of the ester with an amine under transition-metal-free conditions with an excellent yield in ambient temperature, followed by a column chromatography avoided separation technique of the identified lead bioactive compound (H2) that exhibited cell cycle arrest and apoptosis. We observed that the inhibition of HK2 led to the loss of mitochondrial membrane potential and increased mitophagy as a potential mechanism of anticancer action. The lead H2 also reduced the growth of spheroids. Collectively, these results indicated the proof-of-concept for the prototypical lead towards HK2 inhibition with anti-cancer potential.
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Affiliation(s)
- Purbali Chakraborty
- Department of Pharmacy, Birla Institute of Technology and Science, Hyderabad, India
- Cancer Research Group, Centre for Human Diseases Research, Birla Institute of Technology and Science, Hyderabad, India
| | - Syeda Lubna
- Department of Biological Sciences, Birla Institute of Technology and Science, Hyderabad, India
| | - Shouvik Bhuin
- Department of Chemistry, Birla Institute of Technology and Science, Hyderabad, India
| | - Deepika K.
- Department of Pharmacy, Birla Institute of Technology and Science, Hyderabad, India
| | - Manab Chakravarty
- Department of Chemistry, Birla Institute of Technology and Science, Hyderabad, India
| | - Trinath Jamma
- Cancer Research Group, Centre for Human Diseases Research, Birla Institute of Technology and Science, Hyderabad, India
- Department of Biological Sciences, Birla Institute of Technology and Science, Hyderabad, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science, Hyderabad, India
- Cancer Research Group, Centre for Human Diseases Research, Birla Institute of Technology and Science, Hyderabad, India
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Battalapalli D, Vidyadharan S, Prabhakar Rao BVVSN, Yogeeswari P, Kesavadas C, Rajagopalan V. Fractal dimension: analyzing its potential as a neuroimaging biomarker for brain tumor diagnosis using machine learning. Front Physiol 2023; 14:1201617. [PMID: 37528895 PMCID: PMC10390093 DOI: 10.3389/fphys.2023.1201617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023] Open
Abstract
Purpose: The main purpose of this study was to comprehensively investigate the potential of fractal dimension (FD) measures in discriminating brain gliomas into low-grade glioma (LGG) and high-grade glioma (HGG) by examining tumor constituents and non-tumorous gray matter (GM) and white matter (WM) regions. Methods: Retrospective magnetic resonance imaging (MRI) data of 42 glioma patients (LGG, n = 27 and HGG, n = 15) were used in this study. Using MRI, we calculated different FD measures based on the general structure, boundary, and skeleton aspects of the tumorous and non-tumorous brain GM and WM regions. Texture features, namely, angular second moment, contrast, inverse difference moment, correlation, and entropy, were also measured in the tumorous and non-tumorous regions. The efficacy of FD features was assessed by comparing them with texture features. Statistical inference and machine learning approaches were used on the aforementioned measures to distinguish LGG and HGG patients. Results: FD measures from tumorous and non-tumorous regions were able to distinguish LGG and HGG patients. Among the 15 different FD measures, the general structure FD values of enhanced tumor regions yielded high accuracy (93%), sensitivity (97%), specificity (98%), and area under the receiver operating characteristic curve (AUC) score (98%). Non-tumorous GM skeleton FD values also yielded good accuracy (83.3%), sensitivity (100%), specificity (60%), and AUC score (80%) in classifying the tumor grades. These measures were also found to be significantly (p < 0.05) different between LGG and HGG patients. On the other hand, among the 25 texture features, enhanced tumor region features, namely, contrast, correlation, and entropy, revealed significant differences between LGG and HGG. In machine learning, the enhanced tumor region texture features yielded high accuracy, sensitivity, specificity, and AUC score. Conclusion: A comparison between texture and FD features revealed that FD analysis on different aspects of the tumorous and non-tumorous components not only distinguished LGG and HGG patients with high statistical significance and classification accuracy but also provided better insights into glioma grade classification. Therefore, FD features can serve as potential neuroimaging biomarkers for glioma.
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Affiliation(s)
- Dheerendranath Battalapalli
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - Sreejith Vidyadharan
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - B. V. V. S. N. Prabhakar Rao
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - P. Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
| | - C. Kesavadas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, India
| | - Venkateswaran Rajagopalan
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, India
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Battalapalli D, Rao BVVSNP, Yogeeswari P, Kesavadas C, Rajagopalan V. An optimal brain tumor segmentation algorithm for clinical MRI dataset with low resolution and non-contiguous slices. BMC Med Imaging 2022; 22:89. [PMID: 35568820 PMCID: PMC9107172 DOI: 10.1186/s12880-022-00812-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 04/20/2022] [Indexed: 11/27/2022] Open
Abstract
Background Segmenting brain tumor and its constituent regions from magnetic resonance images (MRI) is important for planning diagnosis and treatment. In clinical routine often an experienced radiologist delineates the tumor regions using multimodal MRI. But this manual segmentation is prone to poor reproducibility and is time consuming. Also, routine clinical scans are usually of low resolution. To overcome these limitations an automated and precise segmentation algorithm based on computer vision is needed. Methods We investigated the performance of three widely used segmentation methods namely region growing, fuzzy C means and deep neural networks (deepmedic). We evaluated these algorithms on the BRATS 2018 dataset by choosing randomly 48 patients data (high grade, n = 24 and low grade, n = 24) and on our routine clinical MRI brain tumor dataset (high grade, n = 15 and low grade, n = 28). We measured their performance using dice similarity coefficient, Hausdorff distance and volume measures. Results Region growing method performed very poorly when compared to fuzzy C means (fcm) and deepmedic network. Dice similarity coefficient scores for FCM and deepmedic algorithms were close to each other for BRATS and clinical dataset. The accuracy was below 70% for both these methods in general. Conclusion Even though the deepmedic network showed very high accuracy in BRATS challenge for brain tumor segmentation, it has to be custom trained for the low resolution routine clinical scans. It also requires large training data to be used as a stand-alone algorithm for clinical applications. Nevertheless deepmedic may be a better algorithm for brain tumor segmentation when compared to region growing or FCM.
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Affiliation(s)
- Dheerendranath Battalapalli
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, 500078, India
| | - B V V S N Prabhakar Rao
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, 500078, India
| | - P Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, 500078, India
| | - C Kesavadas
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, 695011, India
| | - Venkateswaran Rajagopalan
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, 500078, India.
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Bomba FDT, Nguelefack TB, Matharasala G, Mishra RK, Battu MB, Sriram D, Kamanyi A, Yogeeswari P. Antihypernociceptive effects of Petersianthus macrocarpus stem bark on neuropathic pain induced by chronic constriction injury in rats. Inflammopharmacology 2021; 29:1241-1253. [PMID: 34081248 DOI: 10.1007/s10787-021-00821-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/15/2021] [Indexed: 11/28/2022]
Abstract
Petersianthus macrocarpus (Lecythidaceae) stem bark is traditionally used in West and Central Africa for the treatment of boils and pain. The present study examined the chemical composition of the aqueous and methanolic stem bark extracts of P. macrocarpus by liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) . Their antinociceptive effect was evaluated using chronic constriction injury (CCI)-induced neuropathic pain in a rat model. On the ninth day post-surgery, the pain perception (allodynia and hyperalgesia) of the animals was assessed after the administration of aqueous and methanolic extracts at the doses of 100 and 200 mg/kg. In addition, the effect of the extracts was evaluated on nitric oxide activity and on the expression of pro-inflammatory cytokines (TNF-α, IL-1β, and NF-κB). The LC-ESI-MS analysis revealed the presence of ellagic acid as the major constituent in the methanol extract. Both extracts at the employed doses (100 and 200 mg/kg), significantly (p < 0.01 and p < 0.001) reduced the spontaneous pain, tactile and cold allodynia, and mechanical hyperalgesia. The methanolic extract used at the dose of 200 mg/kg significantly reduced the nitric oxide level (p < 0.001) and the gene expression levels of NF-κB (p < 0.05) and TNF-α (p < 0.01) in the brain. These data may indicate that stem bark extracts of P. macrocarpus possess a potent anti-hypernociceptive effect on CCI neuropathic pain. The inhibition of the nitric oxide pathway as well as the reduction in NF-κB and TNF-α gene expression in the brain may at least partially contribute to this effect. The results further support the use of this plant by traditional healers in pain conditions.
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Affiliation(s)
- Francis Desire Tatsinkou Bomba
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Buea, P.O. Box 63, Buea, Cameroon.
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India.
| | - Telesphore Benoit Nguelefack
- Research Unit of Neuro-Inflammatory and Cardiovascular Pharmacology, Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Gangadhar Matharasala
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India
| | - Ram Kumar Mishra
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India
| | - Madhu Babu Battu
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India
| | - Dharmarajan Sriram
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India
| | - Albert Kamanyi
- Research Unit of Neuro-Inflammatory and Cardiovascular Pharmacology, Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Perumal Yogeeswari
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus. Jawahar Nagar, Shameerpet Mandal R.R. District, Hyderabad, Telangana, 500078, India.
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Agarwal DS, Siva Krishna V, Sriram D, Yogeeswari P, Sakhuja R. Clickable conjugates of bile acids and nucleosides: Synthesis, characterization, in vitro anticancer and antituberculosis studies. Steroids 2018; 139:35-44. [PMID: 30236620 DOI: 10.1016/j.steroids.2018.09.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/05/2018] [Accepted: 09/12/2018] [Indexed: 01/07/2023]
Abstract
A series of clickable bile acid-nucleosides conjugates linked directly or via amino acid linker were synthesized, and characterized by spectroscopic techniques such as 1H NMR, 13C NMR, FT-IR, HRMS and HPLC. The synthesized compounds 6a-p were screened for their in vitro anticancer property against a panel of three cancer cell lines (PC-3, MCF-7, IMR-32). In addition, the synthesized derivatives were also tested for their antimycobacterial activity against Mycobacterium tuberculosis H37Rv (ATCC 27294 strain). Among the screened compounds, cholic acid-uridine clicked conjugate (6c), and cholic acid-uridine clicked conjugate liked via phenylalanine moiety (6m) were found to be most active against MCF-7 and IMR-32 exhibiting an IC50 value of 8.084 and 8.71 µM, respectively. The antimycobacterial study of the synthesized conjugates revealed all the conjugates to be active with MIC values in the range of 4.09-15.41 µM. Deoxycholic acid-adenosine clicked conjugate (6b) showed most promising antituberculosis property with MIC value of 4.09 µM. Most of the synthesized conjugates were found to be safe at 50 µM against normal human embryonic kidney (HEK 293 T) cell line.
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Affiliation(s)
- Devesh S Agarwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India
| | - Vagolu Siva Krishna
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Perumal Yogeeswari
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Rajeev Sakhuja
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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Kummari B, Ramesh P, Parsharamulu R, Allaka TR, Anantaraju H, Yogeeswari P, Balasubramanian S, Guggilapu SD, Babu BN, Anireddy JS. Design and Synthesis of New Etodolac‐Pyridazinones as Potent Anticancer Agents Using Pb(OAc)
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to Assist N‐N Bond Formation. ChemistrySelect 2018. [DOI: 10.1002/slct.201800459] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bhaskar Kummari
- Centre for Chemical Sciences and TechnologyInstitute of Science and TechnologyJawaharlal Nehru Technological University Hyderabad, Kukatpally Hyderabad - 500085, T.S. India
| | - Perla Ramesh
- Natural Products Chemistry DivisionCSIR-Indian Institute of Chemical Technology Hyderabad - 500007 India
| | - Rayam Parsharamulu
- Centre for Chemical Sciences and TechnologyInstitute of Science and TechnologyJawaharlal Nehru Technological University Hyderabad, Kukatpally Hyderabad - 500085, T.S. India
| | - Tejeswara Rao Allaka
- Centre for Chemical Sciences and TechnologyInstitute of Science and TechnologyJawaharlal Nehru Technological University Hyderabad, Kukatpally Hyderabad - 500085, T.S. India
| | - Hasithashilpa Anantaraju
- Department of PharmacyBirla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar nagar 500078, T.S. India
| | - Perumal Yogeeswari
- Department of PharmacyBirla Institute of Technology and Science, Pilani, Hyderabad Campus, Jawahar nagar 500078, T.S. India
| | - Sridhar Balasubramanian
- X-ray Crystallography DivisionCSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Sravanthi Devi Guggilapu
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education Research (NIPER) Hyderabad, T.S. India
| | - Bathini Nagendra Babu
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education Research (NIPER) Hyderabad, T.S. India
| | - Jaya Shree Anireddy
- Centre for Chemical Sciences and TechnologyInstitute of Science and TechnologyJawaharlal Nehru Technological University Hyderabad, Kukatpally Hyderabad - 500085, T.S. India
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Nalla V, Shaikh A, Bapat S, Vyas R, Karthikeyan M, Yogeeswari P, Sriram D, Muthukrishnan M. Identification of potent chromone embedded [1,2,3]-triazoles as novel anti-tubercular agents. R Soc Open Sci 2018; 5:171750. [PMID: 29765644 PMCID: PMC5936909 DOI: 10.1098/rsos.171750] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/09/2018] [Indexed: 05/06/2023]
Abstract
A series of 20 novel chromone embedded [1,2,3]-triazoles derivatives were synthesized via an easy and convenient synthetic procedure starting from 2-hydroxy acetophenone. The in vitro anti-mycobacterial evaluation studies carried out in this work reveal that seven compounds exhibit significant inhibition against Mycobacterium tuberculosis H37Rv strain with MIC in the range of 1.56-12.5 µg ml-1. Noticeably, compound 6s was the most potent compound in vitro with a MIC value of 1.56 µg ml-1. Molecular docking and chemoinformatics studies revealed that compound 6s displayed drug-like properties against the enoyl-acyl carrier protein reductase of M. tuberculosis further establishing its potential as a potent inhibitor.
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Affiliation(s)
- Viswanadh Nalla
- CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Aslam Shaikh
- CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Sanket Bapat
- MIT School of Bioengineering Sciences and Research, MIT Art, Design and Technology University, Pune 412 201, India
| | - Renu Vyas
- MIT School of Bioengineering Sciences and Research, MIT Art, Design and Technology University, Pune 412 201, India
| | - M. Karthikeyan
- CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - P. Yogeeswari
- Tuberculosis Drug Discovery Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500 0078, India
| | - D. Sriram
- Tuberculosis Drug Discovery Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad 500 0078, India
| | - M. Muthukrishnan
- CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
- Author for correspondence: M. Muthukrishnan e-mail:
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Kasturi SP, Surarapu S, Uppalanchi S, Dwivedi S, Yogeeswari P, Sigalapalli DK, Bathini NB, Ethiraj KS, Anireddy JS. Synthesis, molecular modeling and evaluation of α-glucosidase inhibition activity of 3,4-dihydroxy piperidines. Eur J Med Chem 2018. [DOI: 10.1016/j.ejmech.2018.02.072] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Mediesse FK, Boudjeko T, Hasitha A, Gangadhar M, Mbacham WF, Yogeeswari P. Inhibition of lipopolysaccharide (LPS)-induced neuroinflammatory response by polysaccharide fractions of Khaya grandifoliola (C.D.C.) stem bark, Cryptolepis sanguinolenta (Lindl.) Schltr and Cymbopogon citratus Stapf leaves in raw 264.7 macrophages and U87 glioblastoma cells. BMC Complement Altern Med 2018. [PMID: 29530027 PMCID: PMC5848566 DOI: 10.1186/s12906-018-2156-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background Khaya grandifoliola (C.D.C.) stem bark, Cymbopogon citratus (Stapf) and Cryptolepis sanguinolenta (Lindl.) Schltr leaves are used in Cameroonian traditional medicine for the treatment of inflammatory diseases. Several studies have been performed on the biological activities of secondary metabolites extracted from these plants. However, to the best of our knowledge, the anti-neuro inflammatory and protective roles of the polysaccharides of these three plants have not yet been elucidated. This study aimed at investigating potential use of K. grandifoliola, C. sanguinolenta and C. citratus polysaccharides in the prevention of chronic inflammation. Methods Firstly, the composition of polysaccharide fractions isolated from K. grandifoliola stem bark (KGF), C. sanguinolenta (CSF) and C. citratus (CCF) leaves was assessed. Secondly, the cytotoxicity was evaluated on Raw 264.7 macrophages and U87-MG glioblastoma cell lines by the MTT assay. This was followed by the in vitro evaluation of the ability of KGF, CSF and CCF to inhibit lipopolysaccharides (LPS) induced overproduction of various pro-inflammatory mediators (NO, ROS and IL1β, TNFα, IL6, NF-kB cytokines). This was done in Raw 264.7 and U87-MG cells. Finally, the in vitro protective effect of KGF, CSF and CCF against LPS-induced toxicity in the U87-MG cells was evaluated. Results CCF was shown to mostly contain sugar and no polyphenol while KGP and CSP contained very few amounts of these metabolites (≤ 2%). The three polysaccharide fractions were non-toxic up to 100 μg.mL− 1. All the polysaccharides at 10 μg/mL inhibited NO production, but only KGF and CCF at 12.5 μg/mL down-regulated LPS-induced ROS overproduction. Finally, 100 μg/mL LPS reduced 50% of U87 cell viability, and pre-treatment with the three polysaccharides significantly increased the proliferation. Conclusion These results suggest that the polysaccharides of K. grandifoliola, C. citratus and C. sanguinolenta could be beneficial in preventing/treating neurodegenerative diseases in which neuroinflammation is part of the pathophysiology.
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Kasturi S, Surarapu S, Uppalanchi S, Anantaraju HS, Dwivedi S, Yogeeswari P, Ethiraj KS, Anireddy JS. Synthesis of New Heteroaryl Substituted Morpholine Tagged Triazines and Evaluation of their Cytotoxic Activity. LETT DRUG DES DISCOV 2018. [DOI: 10.2174/1570180814666170605115335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
In the present study, new triazine derivatives 3, 4, 5, 6, 8 and 10 were
synthesized starting from readily available cyanuric chloride 1 via nucleophilic displacement with
morpholine followed by Suzuki or Stille coupling reactions and then the thermal displacement of
chlorine atom with diverse substituted amines.
Methods:
All synthesized compounds were screened for their cytotoxic activity against HT-29,
MDA-MB-231, and HEK293 cell lines.
Results and Conclusion:
Compounds 6a (IC50 (µM): 0.32 for HT-29 and 2.92 for MDA-MB-231)
and 8c (IC50 (µM): 1.40 for HT-29 and 1.60 for MDA-MB-231) have been identified and compared
with Doxorubicin and ZSTK474 as the reference standards.
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Affiliation(s)
- Sivaprasad Kasturi
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, Plot.No.28 A, IDA, Nacharam, Hyderabad 500076, Telangana State, India
| | - Sujatha Surarapu
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, Plot.No.28 A, IDA, Nacharam, Hyderabad 500076, Telangana State, India
| | - Srinivas Uppalanchi
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, Plot.No.28 A, IDA, Nacharam, Hyderabad 500076, Telangana State, India
| | - Hasitha Shilpa Anantaraju
- Biology Division, Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Shubham Dwivedi
- Biology Division, Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Perumal Yogeeswari
- Biology Division, Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, Telangana State, India
| | - Krishna S. Ethiraj
- Department of Medicinal Chemistry, GVK Biosciences Pvt. Ltd, Plot.No.28 A, IDA, Nacharam, Hyderabad 500076, Telangana State, India
| | - Jaya Shree Anireddy
- Centre for Chemical Sciences & Technology, Institute of Science and Technology, JNTUH, Kukatpally, Hyderabad 500085, Telangana State, India
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Kulkarni P, Medishetti R, Nune N, Yellanki S, Sripuram V, Rao P, Sriram D, Saxena U, Oruganti S, Yogeeswari P. Correlation of pharmacokinetics and brain penetration data of adult zebrafish with higher mammals including humans. J Pharmacol Toxicol Methods 2017; 88:147-152. [DOI: 10.1016/j.vascn.2017.09.258] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 09/23/2017] [Accepted: 09/28/2017] [Indexed: 10/18/2022]
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Devi ML, Reddy PL, Yogeeswari P, Sriram D, Reddy TV, Reddy BVS, Narender R. Design and synthesis of novel triazole linked pyrrole derivatives as potent Mycobacterium tuberculosis inhibitors. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1997-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Dongamanti A, Aamate VK, Devulapally MG, Gundu S, Balabadra S, Manga V, Yogeeswari P, Sriram D, Balasubramanian S. Bis-spirochromanones as potent inhibitors of Mycobacterium tuberculosis: synthesis and biological evaluation. Mol Divers 2017; 21:999-1010. [PMID: 28840414 DOI: 10.1007/s11030-017-9779-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 08/02/2017] [Indexed: 11/30/2022]
Abstract
On the basis of reported antimycobacterial property of chroman-4-one pharmacophore, a series of chemically modified bis-spirochromanones were synthesized starting from 2-hydroxyacetophenone and 1,4-dioxaspiro[4.5] decan-8-one using a Kabbe condensation approach. The synthesized bis-spirochromanones were established based on their spectral data and X-ray crystal structure of 6e. All synthesized compounds were evaluated against Mycobacterium tuberculosis H37Rv (ATCC 27294) strain, finding that some products exhibited good antimycobacterial activity with minimum inhibitory concentration as low as [Formula: see text]. Docking studies were carried out to identify the binding interactions of compounds II, 6a and 6n with FtsZ. Compounds exhibiting good in vitro potency in the MTB MIC assay were further evaluated for toxicity using the HEK cell line.
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Affiliation(s)
- Ashok Dongamanti
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India.
| | - Vikas Kumar Aamate
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Mohan Gandhi Devulapally
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Srinivas Gundu
- Green and Medicinal Chemistry Lab, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Saikrishna Balabadra
- Molecular Modeling and Medicinal Chemistry group, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Vijjulatha Manga
- Molecular Modeling and Medicinal Chemistry group, Department of Chemistry, Osmania University, Hyderabad, Telangana State, 500 007, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, 500 078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, 500 078, India
| | - Sridhar Balasubramanian
- X-ray Crystallography Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana State, 500 007, India
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Goud GL, Ramesh S, Ashok D, Reddy VP, Yogeeswari P, Sriram D, Saikrishna B, Manga V. Design, synthesis, molecular-docking and antimycobacterial evaluation of some novel 1,2,3-triazolyl xanthenones. Medchemcomm 2017; 8:559-570. [PMID: 30108772 PMCID: PMC6072411 DOI: 10.1039/c6md00593d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 12/26/2016] [Indexed: 11/21/2022]
Abstract
As part of an ongoing effort to develop new antitubercular and antimicrobial agents, a series of substituted xanthenone derivatives (7a-p) were synthesized. Xanthenone derivatives (7a-p) were prepared via a one-pot three-component thermal cyclization reaction of β-naphthol (5), substituted 1-aryl-1H-[1,2,3]triazole-4-carbaldehydes (4a-h), and cyclic-1,3-diones (6a, b) in the presence of a catalytic amount of iodine. The newly synthesized compounds were characterized by IR, NMR, mass spectral data, and elemental analysis. These compounds (4a-h and 7a-p) were screened for in vitro antitubercular activity against the M. tuberculosis H37Rv (ATCC 27294) strain, for antibacterial activity against Gram-positive and Gram-negative strains, and for antifungal activity against a pathogenic strain of fungi. Among the compounds tested, most of them showed good to excellent antimicrobial and antitubercular activity. The active compounds displaying good potency in the MTB were further examined for toxicity in a HEK cell line. In addition, the structure and antitubercular activity relationship were further supported by in silico molecular-docking studies of the active compounds against the pantothenate synthetase (PS) enzyme of M. tuberculosis.
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Affiliation(s)
- Gudikadi Linga Goud
- Green and Medicinal Chemistry Laboratory , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India . ; Tel: +91 9391024769
| | - Seela Ramesh
- Green and Medicinal Chemistry Laboratory , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India . ; Tel: +91 9391024769
| | - Dongamanti Ashok
- Green and Medicinal Chemistry Laboratory , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India . ; Tel: +91 9391024769
| | - Vummenthala Prabhakar Reddy
- Green and Medicinal Chemistry Laboratory , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India . ; Tel: +91 9391024769
| | - Perumal Yogeeswari
- Department of Pharmacy , Birla Institute of Technology & Science - Hyderabad Campus , Jawahar Nagar , Hyderabad , Telangana-500 078 , India
| | - Dharmarajan Sriram
- Department of Pharmacy , Birla Institute of Technology & Science - Hyderabad Campus , Jawahar Nagar , Hyderabad , Telangana-500 078 , India
| | - Balabadra Saikrishna
- Molecular Modeling and Medicinal Chemistry Group , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India
| | - Vijjulatha Manga
- Molecular Modeling and Medicinal Chemistry Group , Department of Chemistry , Osmania University , Hyderabad , Telangana-500 007 , India
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15
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Reshma RS, Yogeeswari P, Sriram D. Design and development of novel inhibitors for the treatment of latent tuberculosis. Int J Mycobacteriol 2017; 5 Suppl 1:S121-S122. [PMID: 28043500 DOI: 10.1016/j.ijmyco.2016.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 09/02/2016] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE/BACKGROUND "The captain of all these men of death", is the apt sobriquet for the age-old disease tuberculosis (TB). Despite the availability of many drugs, cases of increasing resistance in the forms of multi-drug and extensively drug-resistant TB and persistence [characteristic of Mycobacterium tuberculosis (MTB)] make the eradication of TB a nightmare. Approval of bedaquiline by the Food and Drug Administration focused attention on quinoline scaffolds for development of new anti-TB agents. Lysine ε-aminotransferase (LAT) in MTB plays a pivotal role in regulating amino acid synthesis, which in turn affects mycobacterial persistence. Here, developed quinoline inhibitors that targeted LAT with an objective to eliminate dormant forms of mycobacterium. METHODS Using e-pharmacophore approaches, quinolone (PBD: 2CJD) leads were found to inhibit lysine binding to LAT. To investigate structural activity relationships, 21 analogues were synthesized and characterized based on the identified lead molecules. RESULTS Among the derivatives, N-(pyridin-2-yl methyl)-2-(4-(quinolin-4-yl) piperazin-1-yl) acetamide was identified as a potent molecule, with an IC50 for LAT of 1.04μM. In nutrient-starved and zebra fish models, this molecule exhibited logarithmic reductions of 2.1- and 2.2-fold, respectively, at a concentration of 10μg/mL. The compound also exhibited good activity against persistent forms of mycobacteria (biofilm model), showing logarithmic reduction of 2.8-fold. Additionally, the hit molecule showed concentration-dependent kill kinetics against dormant forms of mycobacteria, and were devoid of cytotoxicity against RAW cell lines 264.7 at concentrations of 50μM. CONCLUSION Our results indicated that the hit molecule showed activity against both active and persistent forms of infection, which is ideal for new anti-TB agents. This molecule requires further pharmacokinetic and dynamic screening for development as new drug candidate.
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Affiliation(s)
- Rudraraju Srilakshmi Reshma
- Tuberculosis Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | - Perumal Yogeeswari
- Tuberculosis Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | - Dharmarajan Sriram
- Tuberculosis Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India.
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Kummari B, Polkam N, Ramesh P, Anantaraju H, Yogeeswari P, Anireddy JS, Guggilapu SD, Babu BN. Design and synthesis of 1,2,3-triazole–etodolac hybrids as potent anticancer molecules. RSC Adv 2017. [DOI: 10.1039/c6ra28525b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of novel 1,2,3-triazole–etodolac hybrids (6a–l) were synthesized as potent anti-cancer molecules and the synthesis strongly relies on Huisgen's 1,3-dipolar cycloaddition between etodolac azide 3 and substituted terminal alkynes 5a–l.
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Affiliation(s)
- Bhaskar Kummari
- Centre for Chemical Sciences and Technology
- Institute of Science and Technology
- Jawaharlal Nehru Technological University Hyderabad
- Hyderabad-500085
- India
| | - Naveen Polkam
- Centre for Chemical Sciences and Technology
- Institute of Science and Technology
- Jawaharlal Nehru Technological University Hyderabad
- Hyderabad-500085
- India
| | - Perla Ramesh
- Natural Products Chemistry Division
- Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | | | - Perumal Yogeeswari
- Department of Pharmacy
- Birla Institute of Technology and Science
- Pilani
- Hyderabad Campus
- India
| | - Jaya Shree Anireddy
- Centre for Chemical Sciences and Technology
- Institute of Science and Technology
- Jawaharlal Nehru Technological University Hyderabad
- Hyderabad-500085
- India
| | - Sravanthi Devi Guggilapu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education Research (NIPER)
- Hyderabad
- India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education Research (NIPER)
- Hyderabad
- India
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17
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Kulkarni P, Yellanki S, Medishetti R, Sriram D, Saxena U, Yogeeswari P. Novel Zebrafish EAE model: A quick in vivo screen for multiple sclerosis. Mult Scler Relat Disord 2017; 11:32-39. [DOI: 10.1016/j.msard.2016.11.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/07/2016] [Accepted: 11/26/2016] [Indexed: 12/14/2022]
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18
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Abdu-Allah HHM, Youssif BGM, Abdelrahman MH, Abdel-Hamid MK, Reshma RS, Yogeeswari P, Aboul-Fadl T, Sriram D. Synthesis and anti-mycobacterial activity of 4-(4-phenyl-1H-1,2,3-triazol-1-yl)salicylhydrazones: revitalizing an old drug. Arch Pharm Res 2016; 40:168-179. [DOI: 10.1007/s12272-016-0882-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 12/22/2016] [Indexed: 12/17/2022]
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19
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Tanwar B, Kumar A, Yogeeswari P, Sriram D, Chakraborti AK. Design, development of new synthetic methodology, and biological evaluation of substituted quinolines as new anti-tubercular leads. Bioorg Med Chem Lett 2016; 26:5960-5966. [DOI: 10.1016/j.bmcl.2016.10.082] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/25/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
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20
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Reshma RS, Saxena S, Bobesh KA, Jeankumar VU, Gunda S, Yogeeswari P, Sriram D. Design and development of new class of Mycobacterium tuberculosis l-alanine dehydrogenase inhibitors. Bioorg Med Chem 2016; 24:4499-4508. [DOI: 10.1016/j.bmc.2016.07.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 07/22/2016] [Accepted: 07/22/2016] [Indexed: 10/21/2022]
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21
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Surineni G, Yogeeswari P, Sriram D, Kantevari S. Click-based synthesis and antitubercular evaluation of dibenzofuran tethered thiazolyl-1,2,3-triazolyl acetamides. Bioorg Med Chem Lett 2016; 26:3684-9. [DOI: 10.1016/j.bmcl.2016.05.085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 05/11/2016] [Accepted: 05/27/2016] [Indexed: 11/26/2022]
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22
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Brunner K, Maric S, Reshma RS, Almqvist H, Seashore-Ludlow B, Gustavsson AL, Poyraz Ö, Yogeeswari P, Lundbäck T, Vallin M, Sriram D, Schnell R, Schneider G. Inhibitors of the Cysteine Synthase CysM with Antibacterial Potency against Dormant Mycobacterium tuberculosis. J Med Chem 2016; 59:6848-59. [DOI: 10.1021/acs.jmedchem.6b00674] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Katharina Brunner
- Division of Molecular Structural Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Selma Maric
- Division of Molecular Structural Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Rudraraju Srilakshmi Reshma
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad 500078, Andhra Pradesh India
| | - Helena Almqvist
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine & Chemical Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 65 Solna, Sweden
| | - Brinton Seashore-Ludlow
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine & Chemical Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 65 Solna, Sweden
| | - Anna-Lena Gustavsson
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine & Chemical Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 65 Solna, Sweden
| | - Ömer Poyraz
- Division of Molecular Structural Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Perumal Yogeeswari
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad 500078, Andhra Pradesh India
| | - Thomas Lundbäck
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine & Chemical Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 65 Solna, Sweden
| | - Michaela Vallin
- Chemical Biology Consortium Sweden, Science for Life Laboratory, Division of Translational Medicine & Chemical Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 65 Solna, Sweden
| | - Dharmarajan Sriram
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad 500078, Andhra Pradesh India
| | - Robert Schnell
- Division of Molecular Structural Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Gunter Schneider
- Division of Molecular Structural Biology, Department of Medical Biochemistry & Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden
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Pulipati L, Sridevi JP, Yogeeswari P, Sriram D, Kantevari S. Synthesis and antitubercular evaluation of novel dibenzo[ b , d ]thiophene tethered imidazo[1,2- a ]pyridine-3-carboxamides. Bioorg Med Chem Lett 2016; 26:3135-3140. [DOI: 10.1016/j.bmcl.2016.04.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 04/27/2016] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
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Pulipati L, Yogeeswari P, Sriram D, Kantevari S. Click-based synthesis and antitubercular evaluation of novel dibenzo[ b , d ]thiophene-1,2,3-triazoles with piperidine, piperazine, morpholine and thiomorpholine appendages. Bioorg Med Chem Lett 2016; 26:2649-54. [DOI: 10.1016/j.bmcl.2016.04.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/24/2016] [Accepted: 04/07/2016] [Indexed: 12/14/2022]
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25
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Banerjee SK, Kumar M, Alokam R, Sharma AK, Chatterjee A, Kumar R, Sahu SK, Jana K, Singh R, Yogeeswari P, Sriram D, Basu J, Kundu M. Targeting multiple response regulators of Mycobacterium tuberculosis augments the host immune response to infection. Sci Rep 2016; 6:25851. [PMID: 27181265 PMCID: PMC4867592 DOI: 10.1038/srep25851] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/25/2016] [Indexed: 11/06/2022] Open
Abstract
The genome of M. tuberculosis (Mtb) encodes eleven paired two component systems (TCSs) consisting of a sensor kinase (SK) and a response regulator (RR). The SKs sense environmental signals triggering RR-dependent gene expression pathways that enable the bacterium to adapt in the host milieu. We demonstrate that a conserved motif present in the C-terminal domain regulates the DNA binding functions of the OmpR family of Mtb RRs. Molecular docking studies against this motif helped to identify two molecules with a thiazolidine scaffold capable of targeting multiple RRs, and modulating their regulons to attenuate bacterial replication in macrophages. The changes in the bacterial transcriptome extended to an altered immune response with increased autophagy and NO production, leading to compromised survival of Mtb in macrophages. Our findings underscore the promise of targeting multiple RRs as a novel yet unexplored approach for development of new anti-mycobacterial agents particularly against drug-resistant Mtb.
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Affiliation(s)
- Srijon Kaushik Banerjee
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Manish Kumar
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Reshma Alokam
- Department of Pharmacy, Birla Institute of Technology &Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 500078, India
| | - Arun Kumar Sharma
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Ayan Chatterjee
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Ranjeet Kumar
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Sanjaya Kumar Sahu
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, P-1/12 CIT Scheme VII M, Kolkata 700054, India
| | - Ramandeep Singh
- Vaccine and Infectious Disease Research Centre, Translational Health Science and Technology Institute, NCR-Biotech Science Cluster, 3rd Milestone, Faridabad Gurgaon Expressway. Faridabad-121001, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology &Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology &Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 500078, India
| | - Joyoti Basu
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
| | - Manikuntala Kundu
- Department of Chemistry, Bose Institute, 93/1 Acharya Prafulla Chandra Road, Kolkata 700009, India
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26
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Nayak N, Ramprasad J, Dalimba U, Yogeeswari P, Sriram D. Synthesis and antimycobacterial screening of new N-(4-(5-aryl-3-(5-methyl-1,3,4-oxadiazol-2-yl)-1H-pyrazol-1-yl)phenyl)-4-amide derivatives. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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27
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Agarwal DS, Anantaraju HS, Sriram D, Yogeeswari P, Nanjegowda SH, Mallu P, Sakhuja R. Synthesis, characterization and biological evaluation of bile acid-aromatic/heteroaromatic amides linked via amino acids as anti-cancer agents. Steroids 2016; 107:87-97. [PMID: 26748355 DOI: 10.1016/j.steroids.2015.12.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/01/2015] [Accepted: 12/30/2015] [Indexed: 12/19/2022]
Abstract
A series of bile acid (Cholic acid and Deoxycholic acid) aryl/heteroaryl amides linked via α-amino acid were synthesized and tested against 3 human cancer cell-lines (HT29, MDAMB231, U87MG) and 1 human normal cell line (HEK293T). Some of the conjugates showed promising results to be new anticancer agents with good in vitro results. More specifically, Cholic acid derivatives 6a (1.35 μM), 6c (1.41 μM) and 6m (4.52 μM) possessing phenyl, benzothiazole and 4-methylphenyl groups showed fairly good activity against the breast cancer cell line with respect to Cisplatin (7.21 μM) and comparable with respect to Doxorubicin (1 μM), while 6e (2.49μM), 6i (2.46 μM) and 6m (1.62 μM) showed better activity against glioblastoma cancer cell line with respect to both Cisplatin (2.60 μM) and Doxorubicin (3.78 μM) drugs used as standards. Greater than 65% of the compounds were found to be safer on human normal cell line.
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Affiliation(s)
- Devesh S Agarwal
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India
| | - Hasitha Shilpa Anantaraju
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Perumal Yogeeswari
- Drug Discovery Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Shankara H Nanjegowda
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, Mysore 570006, India
| | - P Mallu
- Department of Chemistry, Sri Jayachamarajendra College of Engineering, Mysore 570006, India
| | - Rajeev Sakhuja
- Department of Chemistry, Birla Institute of Technology and Science, Pilani 333 031, Rajasthan, India.
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28
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Samala G, Devi PB, Saxena S, Meda N, Yogeeswari P, Sriram D. Design, synthesis and biological evaluation of imidazo[2,1-b]thiazole and benzo[d]imidazo[2,1-b]thiazole derivatives as Mycobacterium tuberculosis pantothenate synthetase inhibitors. Bioorg Med Chem 2016; 24:1298-307. [PMID: 26867485 DOI: 10.1016/j.bmc.2016.01.059] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 01/29/2016] [Accepted: 01/30/2016] [Indexed: 11/29/2022]
Abstract
In the present study, we have designed imidazo[2,1-b]thiazole and benzo[d]imidazo[2,1-b]thiazole derivatives from earlier reported imidazo[1,2-a]pyridine based Mycobacterium tuberculosis (MTB) pantothenate synthetase (PS) inhibitors. We synthesized thirty compounds and they were evaluated for MTB PS inhibition study, in vitro anti-TB activities against replicative and non-replicative MTB, in vivo activity using Mycobacterium marinum infected Zebra fish and cytotoxicity against RAW 264.7 cell line. Among them compound 2-methyl-N'-(4-phenoxybenzoyl)benzo[d]imidazo[2,1-b]thiazole-3-carbohydrazide (5bc) emerged as potent compound active against MTB PS with IC50 of 0.53±0.13 μM, MIC of 3.53 μM, 2.1 log reduction against nutrient starved MTB, with 33% cytotoxicity at 50 μM. It also showed 1.5 log reduction of M. marinum load in Zebra fish at 10mg/kg.
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Affiliation(s)
- Ganesh Samala
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India
| | - Parthiban Brindha Devi
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India
| | - Shalini Saxena
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India
| | - Nikhila Meda
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, Hyderabad 500078, India.
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Jeankumar VU, Saxena S, Vats R, Reshma RS, Janupally R, Kulkarni P, Yogeeswari P, Sriram D. Structure-Guided Discovery of Antitubercular Agents That Target the Gyrase ATPase Domain. ChemMedChem 2016; 11:539-48. [PMID: 26805396 DOI: 10.1002/cmdc.201500556] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Indexed: 11/10/2022]
Abstract
In this study we explored the pharmaceutically underexploited ATPase domain of DNA gyrase (GyrB) as a potential platform for developing novel agents that target Mycobacterium tuberculosis. In this effort a combination of ligand- and structure-based pharmacophore modeling was used to identify structurally diverse small-molecule inhibitors of the mycobacterial GyrB domain based on the crystal structure of the enzyme with a pyrrolamide inhibitor (PDB ID: 4BAE). Pharmacophore modeling and subsequent in vitro screening resulted in an initial hit compound 5 [(E)-5-(5-(2-(1H-benzo[d]imidazol-2-yl)-2-cyanovinyl)furan-2-yl)isophthalic acid; IC50 =4.6±0.1 μm], which was subsequently tailored through a combination of molecular modeling and synthetic chemistry to yield the optimized lead compound 24 [(E)-3-(5-(2-cyano-2-(5-methyl-1H-benzo[d]imidazol-2-yl)vinyl)thiophen-2-yl)benzoic acid; IC50 =0.3±0.2 μm], which was found to display considerable in vitro efficacy against the purified GyrB enzyme and potency against the H37 Rv strain of M. tuberculosis. Structural handles were also identified that will provide a suitable foundation for further optimization of these potent analogues.
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Affiliation(s)
- Variam U Jeankumar
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Shalini Saxena
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Rahul Vats
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Rudraraju Srilakshmi Reshma
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Renuka Janupally
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Pushkar Kulkarni
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad, 500046, India.,Zephase Therapeutics (an incubated company at Dr. Reddy's Institute of Life Sciences), University of Hyderabad Campus, Gachibowli, Hyderabad, 500046, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology & Science - Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Andhra Pradesh, India.
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30
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Pulla VK, Sriram DS, Viswanadha S, Sriram D, Yogeeswari P. Energy-Based Pharmacophore and Three-Dimensional Quantitative Structure–Activity Relationship (3D-QSAR) Modeling Combined with Virtual Screening To Identify Novel Small-Molecule Inhibitors of Silent Mating-Type Information Regulation 2 Homologue 1 (SIRT1). J Chem Inf Model 2016; 56:173-87. [DOI: 10.1021/acs.jcim.5b00220] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Venkat Koushik Pulla
- Computer-Aided
Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology and Science−Pilani, Hyderabad Campus, Hyderabad−500078, Telangana, India
| | - Dinavahi Saketh Sriram
- Computer-Aided
Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology and Science−Pilani, Hyderabad Campus, Hyderabad−500078, Telangana, India
- Incozen Therapeutics
Private Limited, 450, Alexandria Knowledge
Park, Phase-I, Shameerpet, Hyderabad−500078, Telangana, India
| | - Srikant Viswanadha
- Incozen Therapeutics
Private Limited, 450, Alexandria Knowledge
Park, Phase-I, Shameerpet, Hyderabad−500078, Telangana, India
| | - Dharmarajan Sriram
- Computer-Aided
Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology and Science−Pilani, Hyderabad Campus, Hyderabad−500078, Telangana, India
- Yogee’s Bioinnovations
Private Limited, Room 5, Technology
Business Incubator, BITS-Pilani, Hyderabad campus, Shameerpet, Hyderabad−500078, Telangana, India
| | - Perumal Yogeeswari
- Computer-Aided
Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology and Science−Pilani, Hyderabad Campus, Hyderabad−500078, Telangana, India
- Yogee’s Bioinnovations
Private Limited, Room 5, Technology
Business Incubator, BITS-Pilani, Hyderabad campus, Shameerpet, Hyderabad−500078, Telangana, India
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31
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Tatar E, Karakuş S, Küçükgüzel ŞG, Öktem Okullu S, Ünübol N, Kocagöz T, De Clercq E, Andrei G, Snoeck R, Pannecouque C, Kalaycı S, Şahin F, Sriram D, Yogeeswari P, Küçükgüzel İ. Design, Synthesis, and Molecular Docking Studies of a Conjugated Thiadiazole–Thiourea Scaffold as Antituberculosis Agents. Biol Pharm Bull 2016; 39:502-15. [DOI: 10.1248/bpb.b15-00698] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Esra Tatar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University
| | - Sevgi Karakuş
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University
| | | | - Sinem Öktem Okullu
- Department of Medical Microbiology, School of Medicine, Acıbadem University
| | - Nihan Ünübol
- Department of Medical Microbiology, School of Medicine, Acıbadem University
| | - Tanıl Kocagöz
- Department of Medical Microbiology, School of Medicine, Acıbadem University
| | | | | | | | | | - Sadık Kalaycı
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University
| | - Fikrettin Şahin
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University
| | - Dharmarajan Sriram
- Medicinal Chemistry and Drug Discovery Research Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani
| | - Perumal Yogeeswari
- Medicinal Chemistry and Drug Discovery Research Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani
| | - İlkay Küçükgüzel
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University
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32
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Abstract
Simple two step synthesis of fused thieno-/furo-quinoline (or [1,8]-naphthyridine) compounds by sequential application of Suzuki coupling and modified Pictet–Spengler synthesis.
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Affiliation(s)
- Mahesh Akula
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad – 500078
- India
| | - P. Yogeeswari
- Department of Pharmacy
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad – 500078
- India
| | - D. Sriram
- Department of Pharmacy
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad – 500078
- India
| | - Mukund Jha
- Department of Biology and Chemistry
- Nipissing University
- North Bay
- Canada
| | - Anupam Bhattacharya
- Department of Chemistry
- Birla Institute of Technology and Science-Pilani (Hyderabad Campus)
- Hyderabad – 500078
- India
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33
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Rouatbi F, Askri M, Nana F, Kirsch G, Sriram D, Yogeeswari P. Synthesis of new spirooxindole derivatives through 1,3-dipolar cycloaddition of azomethine ylides and their antitubercular activity. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.11.056] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Ramprasad J, Nayak N, Dalimba U, Yogeeswari P, Sriram D. Ionic liquid-promoted one-pot synthesis of thiazole–imidazo[2,1-b][1,3,4]thiadiazole hybrids and their antitubercular activity. Med Chem Commun 2016. [DOI: 10.1039/c5md00346f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The anti-TB activity of new thiazole–imidazo[2,1-b][1,3,4]thiadiazoles, which are synthesized via one-pot synthesis, is comparable with that of standard drugs.
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Affiliation(s)
- Jurupula Ramprasad
- Organic Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka, Surathkal
- Mangalore-575025
- India
| | - Nagabhushana Nayak
- Organic Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka, Surathkal
- Mangalore-575025
- India
| | - Udayakumar Dalimba
- Organic Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka, Surathkal
- Mangalore-575025
- India
| | - Perumal Yogeeswari
- Medicinal Chemistry and Drug Discovery Research Laboratory
- Pharmacy Group
- Birla Institute of Technology and Science-Pilani
- Hyderabad Campus
- India
| | - Dharmarajan Sriram
- Medicinal Chemistry and Drug Discovery Research Laboratory
- Pharmacy Group
- Birla Institute of Technology and Science-Pilani
- Hyderabad Campus
- India
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35
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Eroglu B, Ozadali-Sari K, Unsal-Tan O, Dharmarajan S, Yogeeswari P, Balkan A. Novel Thiazolidinone-Azole Hybrids: Design, Synthesis and Antimycobacterial Activity Studies. Iran J Pharm Res 2016; 15:783-790. [PMID: 28243274 PMCID: PMC5316256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
To develop novel antimycobacterial agents, a new series of thiazolidinone-azole hybrids 4a-b, 5a-b and 6-13 were designed and synthesized. Thiazolidin-4-ones (4a-b and 5a-b) were obtained by the reaction of Schiff bases and hydrazones (2a-b and 3a-b) with mercaptoacetic acid. 5-Benzylidene derivatives (6-13) were gained by treatment of 5a-b with appropriate benzaldehydes according to Knoevenagel condensation. To evaluate their structures 1H NMR, IR, mass spectrometry and elemental analysis data were used. The target compounds were screened for their antimycobacterial activity against M. tuberculosis H37Rv strain using the microplate alamar blue assay method. Among them, 6, 10 and 12 (MIC: 14.27-14.74 μM) were found as most active compounds in the series. It was seen that both phenylamino and benzylidene substitutions on thiazolidin-4-one ring caused an improvement in the antimycobacterial activity.
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Affiliation(s)
- Barbaros Eroglu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.
| | - Keriman Ozadali-Sari
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Corresponding author: E-mail:
| | - Oya Unsal-Tan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.
| | - Sriram Dharmarajan
- Medicinal Chemistry & Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology & Science – Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 500 078, Andhra Pradesh, India.
| | - Perumal Yogeeswari
- Medicinal Chemistry & Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology & Science – Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad 500 078, Andhra Pradesh, India.
| | - Ayla Balkan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.
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36
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Jeankumar VU, Reshma RS, Janupally R, Saxena S, Sridevi JP, Medapi B, Kulkarni P, Yogeeswari P, Sriram D. Enabling the (3 + 2) cycloaddition reaction in assembling newer anti-tubercular lead acting through the inhibition of the gyrase ATPase domain: lead optimization and structure activity profiling. Org Biomol Chem 2015; 13:2423-31. [PMID: 25569565 DOI: 10.1039/c4ob02049a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
DNA gyrase, the sole type II topoisomerase present in Mycobacterium tuberculosis, is absent in humans and is a well validated target for anti-tubercular drug discovery. In this study, a moderately active inhibitor of Mycobacterium tuberculosis GyrB, the pharmaceutically unexploited domain of DNA gyrase, was reengineered using a combination of molecular docking and medicinal chemistry strategies to obtain a lead series displaying considerable in vitro enzyme efficacy and bacterial kill against the Mycobacterium tuberculosis H37Rv strain. Biophysical investigations using differential scanning fluorimetry experiments re-ascertained the affinity of these molecules towards the GyrB domain. Furthermore, the molecules were completely devoid of hERG toxicity up to 30 μM, as evaluated in a zebra fish model with a good selectivity index, and from a pharmaceutical point of view, turned out as potential candidates against TB.
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Affiliation(s)
- Variam Ullas Jeankumar
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad-500078, Andhra Pradesh, India.
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37
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Devi PB, Sridevi JP, Kakan SS, Saxena S, Jeankumar VU, Soni V, Anantaraju HS, Yogeeswari P, Sriram D. Discovery of novel lysine ɛ-aminotransferase inhibitors: An intriguing potential target for latent tuberculosis. Tuberculosis (Edinb) 2015; 95:786-794. [DOI: 10.1016/j.tube.2015.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 04/19/2015] [Indexed: 11/25/2022]
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38
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Bobesh KA, Renuka J, Srilakshmi RR, Yellanki S, Kulkarni P, Yogeeswari P, Sriram D. Replacement of cardiotoxic aminopiperidine linker with piperazine moiety reduces cardiotoxicity? Mycobacterium tuberculosis novel bacterial topoisomerase inhibitors. Bioorg Med Chem 2015; 24:42-52. [PMID: 26678175 DOI: 10.1016/j.bmc.2015.11.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 11/20/2015] [Accepted: 11/28/2015] [Indexed: 11/26/2022]
Abstract
Recently numerous non-fluoroquinolone-based bacterial type II topoisomerase inhibitors from both the GyrA and GyrB classes have been reported as antibacterial agents. Inhibitors of the GyrA class include aminopiperidine-based novel bacterial type II topoisomerase inhibitors (NBTIs). However, inhibition of the cardiac ion channel remains a serious liability for the aminopiperidine based NBTIs. In this paper we replaced central aminopiperidine linker with piperazine moiety and tested for its biological activity. We developed a series of twenty four compounds with a piperazine linker 1-(2-(piperazin-1-yl)ethyl)-1,5-naphthyridin-2(1H)-one, by following a multistep protocol. Among them compound 4-(2-(7-methoxy-2-oxo-1,5-naphthyridin-1(2H)-yl)ethyl)-N-(4-nitrophenyl)piperazine-1-carboxamide (11) was the most promising inhibitor with Mycobacterium tuberculosis (MTB) DNA gyrase enzyme supercoiling IC50 of 0.29±0.22μM, with a good MTB MIC of 3.45μM. These kind of compounds retains good potency and showed reduced cardiotoxicity compared to aminopiperidines.
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Affiliation(s)
- Karyakulam Andrews Bobesh
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawaharnagar, Hyderabad 500078, India
| | - Janupally Renuka
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawaharnagar, Hyderabad 500078, India
| | - Rudraraju Reshma Srilakshmi
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawaharnagar, Hyderabad 500078, India
| | - Swapna Yellanki
- Dr Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India; Zephase Therapeutics (an Incubated Company at the Dr Reddy's Institute of Life Sciences), University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - Pushkar Kulkarni
- Dr Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India; Zephase Therapeutics (an Incubated Company at the Dr Reddy's Institute of Life Sciences), University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawaharnagar, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Jawaharnagar, Hyderabad 500078, India.
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39
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Suryadevara P, Yogeeswari P, Soni V, Brindha Devi P, Kumar Nandicoori V, Sriram D. Computational Sampling and Simulation Based Assessment of Novel Mycobacterium tuberculosis Glutamine Synthetase Inhibitors: Study Involving Structure Based Drug Design and Free Energy Perturbation. Curr Top Med Chem 2015; 16:978-95. [DOI: 10.2174/1568026615666150825142726] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 07/10/2015] [Accepted: 08/01/2015] [Indexed: 11/22/2022]
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40
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Anantaraju HS, Battu MB, Viswanadha S, Sriram D, Yogeeswari P. Cathepsin D inhibitors as potential therapeutics for breast cancer treatment: Molecular docking and bioevaluation against triple-negative and triple-positive breast cancers. Mol Divers 2015; 20:521-35. [PMID: 26563150 DOI: 10.1007/s11030-015-9645-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 10/24/2015] [Indexed: 10/22/2022]
Abstract
The main aim of this study was to discover small molecule inhibitors against Cathepsin D (CatD) (EC.3.4.23.5), a clinically proven prognostic marker for breast cancer, and to explore the mechanisms by which CatD could be a useful therapeutic target for triple-positive and triple-negative breast cancers (TPBC & TNBC). The crystal structure of CatD at 2.5 Å resolution (PDB: 1LYB), which was complexed with Pepstatin A, was selected for computer-aided molecular modeling. The methods used in our study were pharmacophore modeling and molecular docking. Virtual screening was performed to identify small molecules from an in-house database and a large commercial chemical library. Cytotoxicity studies were performed on human normal cell line HEK293T and growth inhibition studies on breast adenocarcinoma cell lines, namely MCF-7, MDA-MB-231, SK-BR-3, and MDA-MB-468. Furthermore, RT-PCR analysis, in vitro enzyme assay, and cell cycle analysis ascertained the validity of the selected molecules. A set of 28 molecules was subjected to an in vitro fluorescence-based inhibitory activity assay, and among them six molecules exhibited >50 % inhibition at 25μM. These molecules also exhibited good growth inhibition against TPBC and TNBC cancer types. Among them, molecules 1 and 17 showed single-digit micromolar GI50 values against MCF-7 and MDA-MB-231 cell lines.
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Affiliation(s)
- Hasitha Shilpa Anantaraju
- Computer-Aided Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Telangana, India
| | - Madhu Babu Battu
- Computer-Aided Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Telangana, India
| | - Srikant Viswanadha
- Incozen Therapeutics (P)Ltd, Shameerpet, R.R. District, Hyderabad, 500078, Telangana, India
| | - Dharmarajan Sriram
- Computer-Aided Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Telangana, India.,Yogee'S Bioinnovations Private Limited, Room No. 5, Technology Business Incubator, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, Hyderabad, 500078, Telangana, India
| | - Perumal Yogeeswari
- Computer-Aided Drug Design Laboratory, Department of Pharmacy, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, R.R. District, Hyderabad, 500078, Telangana, India. .,Yogee'S Bioinnovations Private Limited, Room No. 5, Technology Business Incubator, Birla Institute of Technology & Science- Pilani, Hyderabad Campus, Shameerpet, Hyderabad, 500078, Telangana, India.
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41
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Bomba FDT, Wandji BA, Piegang BN, Awouafack MD, Sriram D, Yogeeswari P, Kamanyi A, Nguelefack TB. Antinociceptive properties of the aqueous and methanol extracts of the stem bark of Petersianthus macrocarpus (P. Beauv.) Liben (Lecythidaceae) in mice. J Ethnopharmacol 2015; 174:66-73. [PMID: 26256316 DOI: 10.1016/j.jep.2015.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 07/28/2015] [Accepted: 08/05/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Aqueous maceration from the stem barks of Petersianthus macrocarpus (P. Beauv.) Liben (Lecythidaceae) is taken orally in the central Africa for the management of various ailments, including pain. AIM OF THE STUDY This work was carried out to evaluate in mice, the antinociceptive effects of the aqueous and methanol extracts of the stem bark of P. macrocarpus. MATERIALS AND METHODS The chemical composition of the aqueous and methanol extracts prepared as cold macerations was determined by high performance liquid chromatography coupled with mass spectrometry (LCMS). The antinociceptive effects of these extracts administered orally at the doses of 100, 200 and 400 mg/kg were evaluated using behavioral pain model induced by acetic acid, formalin, hot-plate, capsaicin and glutamate. The rotarod test was also performed at the same doses. The oral acute toxicity of both extracts was studied at the doses of 800, 1600, 3200 and 6400 mg/kg in mice. RESULT The LCMS analysis revealed the presence of ellagic acid as the major constituent in the methanol extract. Both extracts of P. macrocarpus significantly and dose dependently reduced the time and number of writhing induced by acetic acid. They also significantly inhibited the two phases of formalin-induced pain. These effects were significantly inhibited by a pretreatment with naloxone, except for the analgesic activity of the methanol extract at the earlier phase. In addition, nociception induced by hot plate, intraplantar injection of capsaicin or glutamate was significantly inhibited by both extracts. Acute toxicity test showed no sign of toxicity. CONCLUSION These results demonstrate that aqueous and methanol extracts of P. macrocarpus are none toxic substances with good central and peripheral antinociceptive effects that are at least partially due to the presence of ellagic acid. These extracts may induce their antinociceptive effect by interfering with opioid, capsaicin and excitatory amino acid pathways.
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Affiliation(s)
- Francis Desire Tatsinkou Bomba
- Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Bibiane Aimee Wandji
- Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Basile Nganmegne Piegang
- Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Maurice Ducret Awouafack
- Laboratory of Natural Products Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Dharmarajan Sriram
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, R.R. District, 500078 Andhra Pradesh, India
| | - Perumal Yogeeswari
- Neuropathic Pain Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, R.R. District, 500078 Andhra Pradesh, India
| | - Albert Kamanyi
- Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Telesphore Benoit Nguelefack
- Laboratory of Animal Physiology and Phytopharmacology, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon.
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Soni V, Upadhayay S, Suryadevara P, Samla G, Singh A, Yogeeswari P, Sriram D, Nandicoori VK. Depletion of M. tuberculosis GlmU from Infected Murine Lungs Effects the Clearance of the Pathogen. PLoS Pathog 2015; 11:e1005235. [PMID: 26489015 PMCID: PMC4619583 DOI: 10.1371/journal.ppat.1005235] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/27/2015] [Indexed: 01/06/2023] Open
Abstract
M. tuberculosis N-acetyl-glucosamine-1-phosphate uridyltransferase (GlmUMtb) is a bi-functional enzyme engaged in the synthesis of two metabolic intermediates N-acetylglucosamine-1-phosphate (GlcNAc-1-P) and UDP-GlcNAc, catalyzed by the C- and N-terminal domains respectively. UDP-GlcNAc is a key metabolite essential for the synthesis of peptidoglycan, disaccharide linker, arabinogalactan and mycothiols. While glmUMtb was predicted to be an essential gene, till date the role of GlmUMtb in modulating the in vitro growth of Mtb or its role in survival of pathogen ex vivo / in vivo have not been deciphered. Here we present the results of a comprehensive study dissecting the role of GlmUMtb in arbitrating the survival of the pathogen both in vitro and in vivo. We find that absence of GlmUMtb leads to extensive perturbation of bacterial morphology and substantial reduction in cell wall thickness under normoxic as well as hypoxic conditions. Complementation studies show that the acetyl- and uridyl- transferase activities of GlmUMtb are independently essential for bacterial survival in vitro, and GlmUMtb is also found to be essential for mycobacterial survival in THP-1 cells as well as in guinea pigs. Depletion of GlmUMtb from infected murine lungs, four weeks post infection, led to significant reduction in the bacillary load. The administration of Oxa33, a novel oxazolidine derivative that specifically inhibits GlmUMtb, to infected mice resulted in significant decrease in the bacillary load. Thus our study establishes GlmUMtb as a strong candidate for intervention measures against established tuberculosis infections. The synthesis of the Mtb cell wall involves a cascade of reactions catalyzed by cytosolic and cell membrane-bound enzymes. The reaction catalyzed by GlmUMtb (an enzyme with acetyltransferase and uridyltransferase activities) generates UDP-GlcNAc, a central nucleotide-sugar building block of the cell wall. Apart from cell wall synthesis UDP-GlcNAc is an essential metabolite participating in other cellular processes including disaccharide linker and mycothiol biosynthesis. GlmUMtb shares very little sequence similarity with eukaryotic acetyltransferase and uridyltransferase enzymes. Many pathogens have alternative pathway(s) for foraging GlcNAc from the host. The present study was undertaken to see the effects of depleting GlmUMtb on pathogen survival in the host animal. We have generated a conditional gene replacement mutant of glmUMtb and find that depletion of GlmUMtb at any stage of bacterial growth or in mice infected with Mtb including a well-established infection, results in irreversible bacterial death due to perturbation of cell wall synthesis. We have developed a novel anti-GlmUMtb inhibitor (Oxa33), identified its binding site on GlmUMtb, and shown its specificity for GlmUMtb. The study demonstrates that GlmUMtb is a promising target for therapeutic intervention and Oxa33 can be pursued as a lead molecule.
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Affiliation(s)
- Vijay Soni
- National Institute of Immunology, New Delhi, India
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | | | - Priyanka Suryadevara
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | - Ganesh Samla
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | - Archana Singh
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Perumal Yogeeswari
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Hyderabad, India
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Panathur N, Gokhale N, Dalimba U, Koushik PV, Yogeeswari P, Sriram D. Synthesis of novel 5-[(1,2,3-triazol-4-yl)methyl]-1-methyl-3H-pyridazino[4,5-b]indol-4-one derivatives by click reaction and exploration of their anticancer activity. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1473-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ramprasad J, Nayak N, Dalimba U, Yogeeswari P, Sriram D. One-pot synthesis of new triazole—Imidazo[2,1-b][1,3,4]thiadiazole hybrids via click chemistry and evaluation of their antitubercular activity. Bioorg Med Chem Lett 2015; 25:4169-73. [DOI: 10.1016/j.bmcl.2015.08.009] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 07/18/2015] [Accepted: 08/05/2015] [Indexed: 12/25/2022]
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Purkayastha P, Alokam R, Malapati A, Sriram D, Yogeeswari P. Structural Models for the Design of PKMzeta Inhibitors with Neurobiological Indications. Mol Inform 2015; 34:665-78. [PMID: 27490967 DOI: 10.1002/minf.201500003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 04/01/2015] [Indexed: 11/10/2022]
Abstract
An atypical protein kinase C, PKMzeta has become an attractive target for various neurological disorders including long term potentiation, cognition, neuropathic pain and cancer. Drug discovery efforts have been hindered due to the non-availability of the protein structure and hence in the present study we attempted to build the open and closed models of the protein PKMzeta using homology modeling. The models were then used to identify PKMzeta inhibitors utilizing a high-throughput virtual screening protocol from a large commercial chemical database. Compounds were selected based on the binding interactions and Glide score. Compounds were then subjected to in vitro luminescent based kinase assay for their inhibitory activity on targeted protein. Seven compounds exhibited IC50 s less than or equal to 10 µM. Cell based assays revealed that Lead C3 and Lead C6 exhibited selectivity towards methylmercury treated neuroblastoma growth inhibition and suppressed reactive oxygen species with IC50 s of 0.89 and 0.17 µM, respectively. Furthermore, Lead C3 exhibited attenuation of proinflammatory response with least energy in dynamic simulation studies and thus emerged as a prototypical lead for further development as novel inhibitor of PKMzeta for neurological implications.
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Affiliation(s)
- Priyanka Purkayastha
- Computer-Aided Drug Design Lab, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad-500078, A.P., India phone: +91-40-66303515, +91-40-66303506; fax: +91-40-66303998
| | - Reshma Alokam
- Computer-Aided Drug Design Lab, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad-500078, A.P., India phone: +91-40-66303515, +91-40-66303506; fax: +91-40-66303998
| | - Aruna Malapati
- Department of Computer Science and Information Systems, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad-500078, A.P., India
| | - Dharmarajan Sriram
- Computer-Aided Drug Design Lab, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad-500078, A.P., India phone: +91-40-66303515, +91-40-66303506; fax: +91-40-66303998.
| | - Perumal Yogeeswari
- Computer-Aided Drug Design Lab, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Hyderabad-500078, A.P., India phone: +91-40-66303515, +91-40-66303506; fax: +91-40-66303998.
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Nayak N, Ramprasad J, Dalimba U, Yogeeswari P, Sriram D, Kumar HSS, Peethambar SK, Achur R. Synthesis of new pyrazole-triazole hybrids by click reaction using a green solvent and evaluation of their antitubercular and antibacterial activity. Res Chem Intermed 2015. [DOI: 10.1007/s11164-015-2241-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Kamal A, Reddy BS, Sridevi B, Ravikumar A, Venkateswarlu A, Sravanthi G, Sridevi JP, Yogeeswari P, Sriram D. Synthesis and biological evaluation of phaitanthrin congeners as anti-mycobacterial agents. Bioorg Med Chem Lett 2015; 25:3867-72. [DOI: 10.1016/j.bmcl.2015.07.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 07/13/2015] [Accepted: 07/18/2015] [Indexed: 10/23/2022]
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Nkizinkiko Y, Suneel Kumar BVS, Jeankumar VU, Haikarainen T, Koivunen J, Madhuri C, Yogeeswari P, Venkannagari H, Obaji E, Pihlajaniemi T, Sriram D, Lehtiö L. Discovery of potent and selective nonplanar tankyrase inhibiting nicotinamide mimics. Bioorg Med Chem 2015; 23:4139-4149. [PMID: 26183543 DOI: 10.1016/j.bmc.2015.06.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/22/2015] [Accepted: 06/24/2015] [Indexed: 11/18/2022]
Abstract
Diphtheria toxin-like ADP-ribosyltransferases catalyse a posttranslational modification, ADP-ribosylation and form a protein family of 17 members in humans. Two of the family members, tankyrases 1 and 2, are involved in several cellular processes including mitosis and Wnt/β-catenin signalling pathway. They are often over-expressed in cancer cells and have been linked with the survival of cancer cells making them potential therapeutic targets. In this study, we identified nine tankyrase inhibitors through virtual and in vitro screening. Crystal structures of tankyrase 2 with the compounds showed that they bind to the nicotinamide binding site of the catalytic domain. Based on the co-crystal structures we designed and synthesized a series of tetrahydroquinazolin-4-one and pyridopyrimidin-4-one analogs and were subsequently able to improve the potency of a hit compound almost 100-fold (from 11 μM to 150 nM). The most potent compounds were selective towards tankyrases over a panel of other human ARTD enzymes. They also inhibited Wnt/β-catenin pathway in a cell-based reporter assay demonstrating the potential usefulness of the identified new scaffolds for further development.
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Affiliation(s)
- Yves Nkizinkiko
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - B V S Suneel Kumar
- Department of Pharmacy at Birla Institute of Technology and Science-Pilani, Hyderabad campus, Hyderabad 500078, India
| | - Variam Ullas Jeankumar
- Department of Pharmacy at Birla Institute of Technology and Science-Pilani, Hyderabad campus, Hyderabad 500078, India
| | - Teemu Haikarainen
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - Jarkko Koivunen
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - Chanduri Madhuri
- Department of Pharmacy at Birla Institute of Technology and Science-Pilani, Hyderabad campus, Hyderabad 500078, India
| | - Perumal Yogeeswari
- Department of Pharmacy at Birla Institute of Technology and Science-Pilani, Hyderabad campus, Hyderabad 500078, India
| | - Harikanth Venkannagari
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - Ezeogo Obaji
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - Taina Pihlajaniemi
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland
| | - Dharmarajan Sriram
- Department of Pharmacy at Birla Institute of Technology and Science-Pilani, Hyderabad campus, Hyderabad 500078, India.
| | - Lari Lehtiö
- Faculty of Biochemistry and Molecular Medicine & Biocenter Oulu, University of Oulu, PO Box 5400, FIN-90014 Oulu, Finland.
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Panathur N, Gokhale N, Dalimba U, Koushik PV, Yogeeswari P, Sriram D. New indole–isoxazolone derivatives: Synthesis, characterisation and in vitro SIRT1 inhibition studies. Bioorg Med Chem Lett 2015; 25:2768-72. [DOI: 10.1016/j.bmcl.2015.05.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/06/2015] [Accepted: 05/08/2015] [Indexed: 10/23/2022]
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Soni V, Suryadevara P, Sriram D, Kumar S, Nandicoori VK, Yogeeswari P. Structure-based design of diverse inhibitors of Mycobacterium tuberculosis N-acetylglucosamine-1-phosphate uridyltransferase: combined molecular docking, dynamic simulation, and biological activity. J Mol Model 2015; 21:174. [PMID: 26078037 DOI: 10.1007/s00894-015-2704-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 05/17/2015] [Indexed: 10/23/2022]
Abstract
Persistent nature of Mycobacterium tuberculosis is one of the major factors which make the drug development process monotonous against this organism. The highly lipophilic cell wall, which constituting outer mycolic acid and inner peptidoglycan layers, acts as a barrier for the drugs to enter the bacteria. The rigidity of the cell wall is imparted by the peptidoglycan layer, which is covalently linked to mycolic acid by arabinogalactan. Uridine diphosphate-N-acetylglucosamine (UDP-GlcNAc) serves as the starting material in the biosynthesis of this peptidoglycan layers. This UDP-GlcNAc is synthesized by N-acetylglucosamine-1-phosphate uridyltransferase (GlmU(Mtb)), a bi-functional enzyme with two functional sites, acetyltransferase site and uridyltransferase site. Here, we report design and screening of nine inhibitors against UTP and NAcGlc-1-P of uridyltransferase active site of glmU(Mtb). Compound 4 was showing good inhibition and was selected for further analysis. The isothermal titration calorimetry (ITC) experiments showed the binding energy pattern of compound 4 to the uridyltransferase active site is similar to that of substrate UTP. In silico molecular dynamics (MD) simulation studies, for compound 4, carried out for 10 ns showed the protein-compound complex to be stable throughout the simulation with relative rmsd in acceptable range. Hence, these compounds can serve as a starting point in the drug discovery processes against Mycobacterium tuberculosis.
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Affiliation(s)
- Vijay Soni
- Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad campus, Shameerpet, Jawahar Nagar, R.R. District, India
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