1
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Dash S, Rathi E, Kumar A, Chawla K, Joseph A, Kini SG. Structure-activity relationship mediated molecular insights of DprE1 inhibitors: A Comprehensive Review. J Biomol Struct Dyn 2024; 42:6472-6522. [PMID: 37395797 DOI: 10.1080/07391102.2023.2230312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/21/2023] [Indexed: 07/04/2023]
Abstract
Emerging threats of multi-drug resistant (MDR), extensively drug-resistant (XDR), and totally drug-resistant (TDR) tuberculosis led to the discovery of a novel target which was entitled Decaprenylphosphoryl-β-D-ribose 2'-epimerase (DprE1) enzyme. DprE1 is composed of two isoforms, decaprenylphosphoryl-β-D-ribose oxidase (DprE1) and decaprenylphosphoryl-D-2-keto erythro pentose reductase (DprE2). The enzymes, DprE1 and DprE2, regulate the two-step epimerization process to form DPA (Decaprenylphosphoryl arabinose) from DPX (Decaprenylphosphoryl-D-ribose), which is the sole precursor in the cell wall synthesis of arabinogalactan (AG) and lipoarabinomannan (LAM). Target-based and whole-cell-based screening played an imperative role in the identification of the druggable target, DprE1, whereas the druggability of the DprE2 enzyme is not proved yet. To date, diverse scaffolds of heterocyclic and aromatic ring systems have been reported as DprE1 inhibitors based on their interaction mode, i.e. covalent, and non-covalent inhibitors. This review describes the structure-activity relationship (SAR) of reported covalent and non-covalent inhibitors to enlighten about the crucial pharmacophoric features required for DprE1 inhibition, along with in-silico studies which characterize the amino acid residues responsible for covalent and non-covalent interactions.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Swagatika Dash
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ekta Rathi
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Avinash Kumar
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Kiran Chawla
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Alex Joseph
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Suvarna G Kini
- Department of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India
- Manipal Mc Gill Centre for Infectious Diseases, Prasanna School of Public Health, Manipal Academy of Higher Education, Manipal, Karnataka, India
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2
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Keiff F, Bernal FA, Joch M, Jacques Dit Lapierre TJW, Li Y, Liebing P, Dahse HM, Vilotijevic I, Kloss F. Modulation of the Meisenheimer complex metabolism of nitro-benzothiazinones by targeted C-6 substitution. Commun Chem 2024; 7:153. [PMID: 38971912 PMCID: PMC11227536 DOI: 10.1038/s42004-024-01235-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 06/25/2024] [Indexed: 07/08/2024] Open
Abstract
Tuberculosis, caused by Mycobacterium tuberculosis, remains a major public health concern, demanding new antibiotics with innovative therapeutic principles due to the emergence of resistant strains. Benzothiazinones (BTZs) have been developed to address this problem. However, an unprecedented in vivo biotransformation of BTZs to hydride-Meisenheimer complexes has recently been discovered. Herein, we present a study of the influence of electron-withdrawing groups on the propensity of HMC formation in whole cells for a series of C-6-substituted BTZs obtained through reductive fluorocarbonylation as a late-stage functionalization key step. Gibbs free energy of reaction and Mulliken charges and Fukui indices on C-5 at quantum mechanics level were found as good indicators of in vitro HMC formation propensity. These results provide a first blueprint for the evaluation of HMC formation in drug development and set the stage for rational pharmacokinetic optimization of BTZs and similar drug candidates.
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Affiliation(s)
- François Keiff
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Freddy A Bernal
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Melanie Joch
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Thibault J W Jacques Dit Lapierre
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Yan Li
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Phil Liebing
- Institute for Inorganic and Analytical Chemistry, Friedrich-Schiller-Universität Jena, Humboldtstr. 8, 07743, Jena, Germany
| | - Hans-Martin Dahse
- Department of Infection Biology, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, Jena, 07743, Germany
| | - Florian Kloss
- Transfer Group Anti-infectives, Leibniz Institute for Natural Product Research and Infection Biology-Leibniz-HKI, Beutenbergstr. 11a, 07745, Jena, Germany.
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3
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Kim TH, Krichen M, Ojo S, Alamro MA, Sampedro GA. TSSG-CNN: A Tuberculosis Semantic Segmentation-Guided Model for Detecting and Diagnosis Using the Adaptive Convolutional Neural Network. Diagnostics (Basel) 2024; 14:1174. [PMID: 38893700 PMCID: PMC11172024 DOI: 10.3390/diagnostics14111174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
Tuberculosis (TB) is an infectious disease caused by Mycobacterium. It primarily impacts the lungs but can also endanger other organs, such as the renal system, spine, and brain. When an infected individual sneezes, coughs, or speaks, the virus can spread through the air, which contributes to its high contagiousness. The goal is to enhance detection recognition with an X-ray image dataset. This paper proposed a novel approach, named the Tuberculosis Segmentation-Guided Diagnosis Model (TSSG-CNN) for Detecting Tuberculosis, using a combined semantic segmentation and adaptive convolutional neural network (CNN) architecture. The proposed approach is distinguished from most of the previously proposed approaches in that it uses the combination of a deep learning segmentation model with a follow-up classification model based on CNN layers to segment chest X-ray images more precisely as well as to improve the diagnosis of TB. It contrasts with other approaches like ILCM, which is optimized for sequential learning, and explainable AI approaches, which focus on explanations. Moreover, our model is beneficial for the simplified procedure of feature optimization from the perspectives of approach using the Mayfly Algorithm (MA). Other models, including simple CNN, Batch Normalized CNN (BN-CNN), and Dense CNN (DCNN), are also evaluated on this dataset to evaluate the effectiveness of the proposed approach. The performance of the TSSG-CNN model outperformed all the models with an impressive accuracy of 98.75% and an F1 score of 98.70%. The evaluation findings demonstrate how well the deep learning segmentation model works and the potential for further research. The results suggest that this is the most accurate strategy and highlight the potential of the TSSG-CNN Model as a useful technique for precise and early diagnosis of TB.
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Affiliation(s)
- Tae Hoon Kim
- School of Information and Electronic Engineering, Zhejiang University of Science and Technology, No. 318, Hangzhou 310023, China
| | - Moez Krichen
- ReDCAD Laboratory, University of Sfax, Sfax 3038, Tunisia
| | - Stephen Ojo
- Department of Electrical and Computer Engineering, College of Engineering, Anderson University, Anderson, SC 29621, USA;
| | - Meznah A. Alamro
- Department of Information Technology, College of Computer & Information Science, Princess Nourah Bint Abdul Rahman University, Riyadh 11564, Saudi Arabia;
| | - Gabriel Avelino Sampedro
- Faculty of Information and Communication Studies, University of the Philippines Open University, Los Baños 4031, Philippines;
- Gokongwei College of Engineering, De La Salle University, 2401 Taft Ave., Malate, Manila 1004, Philippines
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4
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Tiwari P, Mangubhai GS, Kidwai S, Singh R, Chandrashekharappa S. Design, synthesis and characterization of ethyl 3-benzoyl-7-morpholinoindolizine-1-carboxylate as anti-tubercular agents: In silico screening for possible target identification. Chem Biol Drug Des 2024; 103:e14512. [PMID: 38570316 DOI: 10.1111/cbdd.14512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/24/2024] [Accepted: 03/12/2024] [Indexed: 04/05/2024]
Abstract
A thorough search for the development of innovative drugs to treat tuberculosis, especially considering the urgent need to address developing drug resistance, we report here a synthetic series of ethyl 3-benzoyl-7-morpholinoindolizine-1-carboxylate analogues (5a-o) as potent anti-tubercular agents. These morpholino-indolizines were synthesized by reacting 4-morpholino pyridinium salts, with various electron-deficient acetylenes to afford the ethyl 3-benzoyl-7-morpholinoindolizine-1-carboxylate analogues (5a-o). All synthesized intermediate and final compounds are characterized by spectroscopic methods such as 1H NMR, 13C NMR and HRMS and further examined for their anti-tubercular activity against the M. tuberculosis H37Rv strain (ATCC 27294-American type cell culture). All the compounds screened for anti-tubercular activity in the range of 6.25-50 μM against the H37Rv strain of Mycobacterium tuberculosis. Compound 5g showed prominent activity with MIC99 2.55 μg/mL whereas compounds 5d and 5j showed activity with MIC99 18.91 μg/mL and 25.07 μg/mL, respectively. In silico analysis of these compounds revealed drug-likeness. Additionally, the molecular target identification for Malate synthase (PDB 5CBB) is attained by computational approach. The compound 5g with a MIC99 value of 2.55 μg/mL against M. tuberculosis H37Rv emerged as the most promising anti-TB drug and in silico investigations suggest Malate synthase (5CBB) might be the compound's possible target.
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Affiliation(s)
- Priya Tiwari
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Raebareli, Lucknow, India
| | - Gayakvad Sunitaben Mangubhai
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Raebareli, Lucknow, India
| | - Saqib Kidwai
- Tuberculosis Research Laboratory, Translational Health Science and Technology Institute, Faridabad, India
| | - Ramandeep Singh
- Tuberculosis Research Laboratory, Translational Health Science and Technology Institute, Faridabad, India
| | - Sandeep Chandrashekharappa
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Raebareli, Lucknow, India
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5
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Shenoy V, Gunda R, Noble C, Haraguchi A, Stevenson S, Daniel J. Fullertubes inhibit mycobacterial viability and prevent biofilm formation by disrupting the cell wall. Cell Biochem Funct 2024; 42:e3963. [PMID: 38424684 DOI: 10.1002/cbf.3963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/31/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Mycobacterium tuberculosis and nontuberculous mycobacteria such as Mycobacterium abscessus cause diseases that are becoming increasingly difficult to treat due to emerging antibiotic resistance. The development of new antimicrobial molecules is vital for combating these pathogens. Carbon nanomaterials (CNMs) are a class of carbon-containing nanoparticles with promising antimicrobial effects. Fullertubes (C90 ) are novel carbon allotropes with a structure unique among CNMs. The effects of fullertubes on any living cell have not been studied. In this study, we demonstrate that pristine fullertube dispersions show antimicrobial effects on Mycobacterium smegmatis and M. abscessus. Using scanning electron microscopy, light microscopy, and molecular probes, we investigated the effects of these CNMs on mycobacterial cell viability, cellular integrity, and biofilm formation. C90 fullertubes at 1 µM inhibited mycobacterial viability by 97%. Scanning electron microscopy revealed that the cell wall structure of M. smegmatis and M. abscessus was severely damaged within 24 h of exposure to fullertubes. Additionally, exposure to fullertubes nearly abrogated the acid-fast staining property of M. smegmatis. Using SYTO-9 and propidium iodide, we show that exposure to the novel fullertubes compromises the integrity of the mycobacterial cell. We also show that the permeability of the mycobacterial cell wall was increased after exposure to fullertubes from our assays utilizing the molecular probe dichlorofluorescein and ethidium bromide transport. C90 fullertubes at 0.37 µM and C60 fullerenes at 0.56 µM inhibited pellicle biofilm formation by 70% and 90%, respectively. This is the first report on the antimycobacterial activities of fullertubes and fullerenes.
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Affiliation(s)
- Varun Shenoy
- Department of Biological Sciences, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
- Department of Chemistry and Biochemistry, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
| | - Rashmika Gunda
- Department of Biological Sciences, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
| | - Cora Noble
- Department of Chemistry and Biochemistry, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
| | - Annalisa Haraguchi
- Department of Biological Sciences, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
| | - Steven Stevenson
- Department of Chemistry and Biochemistry, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
| | - Jaiyanth Daniel
- Department of Biological Sciences, Purdue University Fort Wayne, Fort Wayne, Indiana, USA
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Kanchrana M, Gamidi RK, Kumari J, Sriram D, Basavoju S. Design, synthesis, anti-mycobacterial activity, molecular docking and ADME analysis of spiroquinoxaline-1,2,4-oxadiazoles via [3 + 2] cycloaddition reaction under ultrasound irradiation. Mol Divers 2024:10.1007/s11030-023-10790-9. [PMID: 38261121 DOI: 10.1007/s11030-023-10790-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 12/04/2023] [Indexed: 01/24/2024]
Abstract
The development of anti-tuberculosis (anti-TB) drugs has become a challenging task in medicinal chemistry. This is because Mycobacterium tuberculosis (TB), the pathogen that causes tuberculosis, has an increasing number of drug-resistant strains, and existing medication therapies are not very effective. This resistance significantly demands new anti-TB drug profiles. Here, we present the design and synthesis of a number of hybrid compounds with previously known anti-mycobacterial moieties attached to quinoxaline, quinoline, tetrazole, and 1,2,4-oxadiazole scaffolds. A convenient ultrasound methodology was employed to attain spiroquinoxaline-1,2,4-oxadiazoles via [3 + 2] cycloaddition of quinoxaline Schiff bases and aryl nitrile oxides at room temperature. This approach avoids standard heating and column chromatography while producing high yields and shorter reaction times. The target compounds 3a-p were well-characterized, and their in vitro anti-mycobacterial activity (anti-TB) was evaluated. Among the screened compounds, 3i displayed promising activity against the Mycobacterium tuberculosis cell line H37Rv, with an MIC99 value of 0.78 µg/mL. However, three compounds (3f, 3h, and 3o) exhibited potent activity with MIC99 values of 6.25 µg/mL. To further understand the binding interactions, the synthesized compounds were docked against the tuberculosis protein 5OEQ using in silico molecular docking. Moreover, the most active compounds were additionally tested for their cytotoxicity against the RAW 264.7 cell line, and the cytotoxicity of compounds 3f, 3h, 3i, and 3o was 27.3, 28.9, 26.4, and 30.2 µg/mL, respectively. These results revealed that the compounds 3f, 3h, 3i, and 3o were less harmful to humans. Furthermore, the synthesized compounds were tested for ADME qualities, and the results suggest that this series is useful for producing innovative and potent anti-tubercular medicines in the future.
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Affiliation(s)
- Madhu Kanchrana
- Department of Chemistry, National Institute of Technology Warangal, Hanamkonda, Telangana, 506004, India
| | - Rama Krishna Gamidi
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra, 411008, India
| | - Jyothi Kumari
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, Telangana, 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, Telangana, 500078, India
| | - Srinivas Basavoju
- Department of Chemistry, National Institute of Technology Warangal, Hanamkonda, Telangana, 506004, India.
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7
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Simanjuntak AM, Daenansya R, Aflandhanti PM, Yovi I, Suyanto S, Anggraini5 D, Rosdiana D. Efficacy of pretomanid-containing regiments for drug-resistant tuberculosis: A systematic review and meta-analysis of clinical trials. NARRA J 2023; 3:e402. [PMID: 38455633 PMCID: PMC10919689 DOI: 10.52225/narra.v3i3.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 11/05/2023] [Indexed: 03/09/2024]
Abstract
Concerns regarding the rise of drug-resistant tuberculosis (DR-TB) infections and the need for new drugs with shorter treatment time and fewer side effects have been voiced by the World Health Organization (WHO). The WHO revised its guideline to treat multidrug resistant tuberculosis (MDR-TB) with a 6-month course of BPaLM (bedaquiline, pretomanid, linezolid and moxifloxacin) in 2022. However, a thorough study and meta-analysis of available evidence is required due to the limited confidence of the evidence confirming the effectiveness of pretomanid-containing regiments. The aim of this systematic review and meta-analysis was to evaluate the effectiveness of pretomanid-containing regiments in treating DR-TB patients. Data from six search engines were searched using inclusion criteria based on the PICOS framework. The keywords of pretomanid and tuberculosis or their alternatives were used. Using RoB2 Cochrane risk-of-bias tool for randomized clinical trials, data were independently extracted and the quality of the data was evaluated. Odds ratio (OR) and heterogeneity tests were used and the findings were presented in ORs and forest plots. A total of four studies with 237 patients was included in the final analysis and 204 (86%) patients had favorable outcome (cured) and 33 (14%) was not cured. Pretomanid-containing regimen (OR: 46.73; 95%CI: 11.76-185.7) and BPaLM/BPaL (OR: 41.67; 95%CI: 8.86-196.73) regimens were associated with favorable outcome (cured). This meta-analysis indicates that the pretomanid-containing regimen and the BPaLM/BPaL regimen could increase the chance to have favorable outcome in DR-TB patients.
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Affiliation(s)
- Arya M. Simanjuntak
- Department of Pulmonology and Respiratory Medicine, Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
- Department of Pulmonology and Respiratory Medicine, Arifin Achmad General Hospital, Pekanbaru, Indonesia
| | - Raehan Daenansya
- Medical School, Faculty of Medicine, Universitas Sriwijaya, Palembang, Indonesia
| | - Putri M. Aflandhanti
- Medical School, Faculty of Medicine, Universitas Sriwijaya, Palembang, Indonesia
| | - Indra Yovi
- Department of Pulmonology and Respiratory Medicine, Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
- Department of Pulmonology and Respiratory Medicine, Arifin Achmad General Hospital, Pekanbaru, Indonesia
| | - Suyanto Suyanto
- Departement of Public Health, Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
| | - Dewi Anggraini5
- Departement of Microbiology, Arifin Achmad General Hospital, Pekanbaru, Indonesia
| | - Dani Rosdiana
- Departement of Internal Medicine, Faculty of Medicine, Universitas Riau, Pekanbaru, Indonesia
- Departement of Internal Medicine, Arifin Achmad General Hospital, Pekanbaru, Indonesia
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8
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Thakur S, Mehra R. Computational Insight into Substrate-Induced Conformational Changes in Methionyl-tRNA Synthetase of Mycobacterium Tuberculosis. Protein J 2023; 42:533-546. [PMID: 37402109 DOI: 10.1007/s10930-023-10135-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2023] [Indexed: 07/05/2023]
Abstract
Tuberculosis caused by Mycobacterium tuberculosis (M.tb) has killed millions worldwide. Antibiotic resistance leads to the ineffectiveness of the current therapies. Aminoacyl tRNA synthetase (aaRS) class of proteins involved in protein synthesis are promising bacterial targets for developing new therapies. Here, we carried out a systematic comparative study on the aaRS sequences from M.tb and human. We listed important M.tb aaRS that could be explored as potential M.tb targets alongside the detailed conformational space analysis of methionyl-tRNA synthetase (MetRS) in apo- and substrate-bound form, which is among the proposed targets. Understanding the conformational dynamics is central to the mechanistic understanding of MetRS, as the substrate binding leads to the conformational changes causing the reaction to proceed. We performed the most complete simulation study of M.tb MetRS for 6 microseconds (2 systems × 3 runs × 1 microsecond) in the apo and substrate-bound states. Interestingly, we observed differential features, showing comparatively large dynamics for the holo simulations, whereas the apo structures became slightly compact with reduced solvent exposed area. In contrast, the ligand size decreased significantly in holo structures possibly to relax ligand conformation. Our findings correlate with experimental studies, thus validating our protocol. Adenosine monophosphate moiety of the substrate exhibited quite higher fluctuations than the methionine. His21 and Lys54 were found to be the important residues forming prominent hydrogen bond and salt-bridge interactions with the ligand. The ligand-protein affinity decreased during simulations as computed by MMGBSA analysis over the last 500 ns trajectories, which indicates the conformational changes upon ligand binding. These differential features could be further explored for designing new M.tb inhibitors.
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Affiliation(s)
- Shivani Thakur
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, Chhattisgarh, 492015, India
| | - Rukmankesh Mehra
- Department of Chemistry, Indian Institute of Technology Bhilai, Sejbahar, Raipur, Chhattisgarh, 492015, India.
- Department of Bioscience and Biomedical Engineering, Indian Institute of Technology Bhilai, Sejbahar, Raipur, Chhattisgarh, 492015, India.
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9
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Sahoo SK, Ommi O, Maddipatla S, Singh P, Ahmad MN, Kaul G, Nanduri S, Dasgupta A, Chopra S, Yaddanapudi VM. Isoxazole carboxylic acid methyl ester-based urea and thiourea derivatives as promising antitubercular agents. Mol Divers 2023; 27:2037-2052. [PMID: 36282413 PMCID: PMC9592870 DOI: 10.1007/s11030-022-10543-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/28/2022] [Indexed: 11/01/2022]
Abstract
In our continued efforts to find potential chemotherapeutics active against drug-resistant (DR) Mycobacterium tuberculosis (Mtb), causative agent of Tuberculosis (TB) and to curb the current burdensome treatment regimen, herein we describe the synthesis and biological evaluation of urea and thiourea variants of 5-phenyl-3-isoxazolecarboxylic acid methyl esters as promising anti-TB agent. Majority of the tested compounds displayed potent in vitro activity not only against drug-susceptible (DS) Mtb H37Rv but also against drug-resistant (DR) Mtb. Cell viability test against Vero cells deemed these compounds devoid of significant toxicity. 3,4-Dichlorophenyl derivative (MIC 0.25 µg/mL) and 4-chlorophenyl congener (MIC 1 µg/mL) among urea and thiourea libraries respectively exhibited optimum potency. Lead optimization resulted in the identification of 1,4-linked analogue of 3,4-dichlorophenyl urea derivative demonstrating improved selectivity. Further, in silico study complemented with previously proposed prodrug like attributes of isoxazole esters. Taken together, this molecular hybridization approach presents a new chemotype having potential to be translated into an alternate anti-Mtb agent.
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Affiliation(s)
- Santosh Kumar Sahoo
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Ojaswitha Ommi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Sarvan Maddipatla
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Priti Singh
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Mohammad Naiyaz Ahmad
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Jankipuram Extension, Lucknow, Uttar Pradesh, 226031, India
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Grace Kaul
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Jankipuram Extension, Lucknow, Uttar Pradesh, 226031, India
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Srinivas Nanduri
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India
| | - Arunava Dasgupta
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Jankipuram Extension, Lucknow, Uttar Pradesh, 226031, India.
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Jankipuram Extension, Lucknow, Uttar Pradesh, 226031, India.
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| | - Venkata Madhavi Yaddanapudi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, Telangana, 500037, India.
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10
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Pawar VA, Tyagi A, Verma C, Sharma KP, Ansari S, Mani I, Srivastva SK, Shukla PK, Kumar A, Kumar V. Unlocking therapeutic potential: integration of drug repurposing and immunotherapy for various disease targeting. Am J Transl Res 2023; 15:4984-5006. [PMID: 37692967 PMCID: PMC10492070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/31/2023] [Indexed: 09/12/2023]
Abstract
Drug repurposing, also known as drug repositioning, entails the application of pre-approved or formerly assessed drugs having potentially functional therapeutic amalgams for curing various disorders or disease conditions distinctive from their original remedial indication. It has surfaced as a substitute for the development of drugs for treating cancer, cardiovascular diseases, neurodegenerative disorders, and various infectious diseases like Covid-19. Although the earlier lines of findings in this area were serendipitous, recent advancements are based on patient centered approaches following systematic, translational, drug targeting practices that explore pathophysiological ailment mechanisms. The presence of definite information and numerous records with respect to beneficial properties, harmfulness, and pharmacologic characteristics of repurposed drugs increase the chances of approval in the clinical trial stages. The last few years have showcased the successful emergence of repurposed drug immunotherapy in treating various diseases. In this light, the present review emphasises on incorporation of drug repositioning with Immunotherapy targeted for several disorders.
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Affiliation(s)
| | - Anuradha Tyagi
- Department of cBRN, Institute of Nuclear Medicine and Allied ScienceDelhi 110054, India
| | - Chaitenya Verma
- Department of Pathology, Wexner Medical Center, Ohio State UniversityColumbus, Ohio 43201, USA
| | - Kanti Prakash Sharma
- Department of Nutrition Biology, Central University of HaryanaMahendragarh 123029, India
| | - Sekhu Ansari
- Division of Pathology, Cincinnati Children’s Hospital Medical CenterCincinnati, Ohio 45229, USA
| | - Indra Mani
- Department of Microbiology, Gargi College, University of DelhiNew Delhi 110049, India
| | | | - Pradeep Kumar Shukla
- Department of Biological Sciences, Faculty of Science, Sam Higginbottom University of Agriculture, Technology of SciencePrayagraj 211007, UP, India
| | - Antresh Kumar
- Department of Biochemistry, Central University of HaryanaMahendergarh 123031, Haryana, India
| | - Vinay Kumar
- Department of Physiology and Cell Biology, The Ohio State University Wexner Medical CenterColumbus, Ohio 43210, USA
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11
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Enjeti A, Sathkumara HD, Kupz A. Impact of the gut-lung axis on tuberculosis susceptibility and progression. Front Microbiol 2023; 14:1209932. [PMID: 37485512 PMCID: PMC10358729 DOI: 10.3389/fmicb.2023.1209932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/19/2023] [Indexed: 07/25/2023] Open
Abstract
Tuberculosis (TB) has remained at the forefront of the global infectious disease burden for centuries. Concerted global efforts to eliminate TB have been hindered by the complexity of Mycobacterium tuberculosis (Mtb), the emergence of antibiotic resistant Mtb strains and the recent impact of the ongoing pandemic of coronavirus disease 2019 (COVID19). Examination of the immunomodulatory role of gastrointestinal microbiota presents a new direction for TB research. The gut microbiome is well-established as a critical modulator of early immune development and inflammatory responses in humans. Recent studies in animal models have further substantiated the existence of the 'gut-lung axis', where distal gastrointestinal commensals modulate lung immune function. This gut microbiome-lung immune crosstalk is postulated to have an important correlation with the pathophysiology of TB. Further evaluation of this gut immunomodulation in TB may provide a novel avenue for the exploration of therapeutic targets. This mini-review assesses the proposed mechanisms by which the gut-lung axis impacts TB susceptibility and progression. It also examines the impact of current anti-TB therapy on the gut microbiome and the effects of gut dysbiosis on treatment outcomes. Finally, it investigates new therapeutic targets, particularly the use of probiotics in treatment of antibiotic resistant TB and informs future developments in the field.
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Affiliation(s)
- Aditya Enjeti
- College of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - Harindra Darshana Sathkumara
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
| | - Andreas Kupz
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD, Australia
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12
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Muacevic A, Adler JR. Multidrug-Resistant TB (MDR-TB) and Extensively Drug-Resistant TB (XDR-TB) Among Children: Where We Stand Now. Cureus 2023; 15:e35154. [PMID: 36819973 PMCID: PMC9938784 DOI: 10.7759/cureus.35154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2023] [Indexed: 02/20/2023] Open
Abstract
Drug-resistant tuberculosis (DR-TB) has continued to be a global health cataclysm. It is an arduous condition to tackle but is curable with the proper choice of drug and adherence to the drug therapy. WHO has introduced newer drugs with all-oral shorter regimens, but the COVID-19 pandemic has disrupted the achievements and raised the severity. The COVID-19 controlling mechanism is based on social distancing, using face masks, personal protective equipment, medical glove, head shoe cover, face shield, goggles, hand hygiene, and many more. Around the globe, national and international health authorities impose lockdown and movement control orders to ensure social distancing and prevent transmission of COVID-19 infection. Therefore, WHO proposed a TB control program impaired during a pandemic. Children, the most vulnerable group, suffer more from the drug-resistant form and act as the storehouse of future fatal cases. It has dire effects on physical health and hampers their mental health and academic career. Treatment of drug-resistant cases has more success stories in children than adults, but enrollment for treatment has been persistently low in this age group. Despite that, drug-resistant childhood tuberculosis has been neglected, and proper surveillance has not yet been achieved. Insufficient reporting, lack of appropriate screening tools for children, less accessibility to the treatment facility, inadequate awareness, and reduced funding for TB have worsened the situation. All these have resulted in jeopardizing our dream to terminate this deadly condition. So, it is high time to focus on this issue to achieve our Sustainable Development Goals (SDGs), the goal of ending TB by 2030, as planned by WHO. This review explores childhood TB's current position and areas to improve. This review utilized electronic-based data searched through PubMed, Google Scholar, Google Search Engine, Science Direct, and Embase.
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13
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Machine Learning Prediction of Mycobacterial Cell Wall Permeability of Drugs and Drug-like Compounds. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020633. [PMID: 36677691 PMCID: PMC9863426 DOI: 10.3390/molecules28020633] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 12/30/2022] [Accepted: 12/30/2022] [Indexed: 01/11/2023]
Abstract
The cell wall of Mycobacterium tuberculosis and related organisms has a very complex and unusual organization that makes it much less permeable to nutrients and antibiotics, leading to the low activity of many potential antimycobacterial drugs against whole-cell mycobacteria compared to their isolated molecular biotargets. The ability to predict and optimize the cell wall permeability could greatly enhance the development of novel antitubercular agents. Using an extensive structure-permeability dataset for organic compounds derived from published experimental big data (5371 compounds including 2671 penetrating and 2700 non-penetrating compounds), we have created a predictive classification model based on fragmental descriptors and an artificial neural network of a novel architecture that provides better accuracy (cross-validated balanced accuracy 0.768, sensitivity 0.768, specificity 0.769, area under ROC curve 0.911) and applicability domain compared with the previously published results.
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14
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Imran M. Ethionamide and Prothionamide Based Coumarinyl-Thiazole Derivatives: Synthesis, Antitubercular Activity, Toxicity Investigations and Molecular Docking Studies. Pharm Chem J 2022; 56:1215-1225. [PMCID: PMC9734486 DOI: 10.1007/s11094-022-02782-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Mohd Imran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia
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15
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Marealle AI, Innocent E, Andrae-Marobela K, Qwarse M, Machumi F, Nondo RSO, Heydenreich M, Moshi MJ. Safety evaluation and bioassay-guided isolation of antimycobacterial compounds from Morella salicifolia root ethanolic extract. JOURNAL OF ETHNOPHARMACOLOGY 2022; 296:115501. [PMID: 35752260 DOI: 10.1016/j.jep.2022.115501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/10/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Although the available medicines can cure almost all tuberculosis drug-susceptible patients some problems including the emergence of multi-drug resistant and extensively drug-resistant strains press for the need of new anti-TB medicines. Morella salicifolia is a common plant that is widely used in traditional medicine for managing HIV and AIDS-related conditions including tuberculosis but no studies have been done to evaluate its safety and efficacy. AIM OF THE STUDY This study was designed to investigate the antimycobacterial activity and safety of M. salicifolia extract and its constituents. MATERIAL AND METHODS Antimycobacterial activity of the crude extract was tested against non-pathogenic mycobacteria including Mycobacterium aurum (MA), Mycobacterium indicus pranii (MIP) and Mycobacterium madagascariense (MM) using the broth microdilution method. Bioassay-guided fractionation was employed to isolate the active compounds. Some of the isolated active compounds were tested for antimycobacterial activity against the standard and selected clinical isolates of M. tuberculosis. Safety of the crude extract was assessed using cytotoxicity assay and oral acute toxicity testing. RESULTS The crude extract exhibited antimycobacterial activity against all the species used. The study led to isolation of six compounds; four pentacyclic triterpenoids; (3β)-3-Hydroxyolean-12-en-28-oic acid (Oleanolic acid) (1), (2α,3β)-2,3-Dihydroxyolean-12-en-28-oic acid (maslinic acid) (2), D-Friedoolean-14-ene-3β,28-diol (taraxerol) (3), and D-Friedoolean-14-en-3β-ol (myricadiol) (4), and two diarylheptanoids; (±)-myricanol (5) and myricanone (6). The six compounds exhibited activity against three nonpathogenic mycobacteria species. Compound 2, was the most active, with MICs of 17, 28 and 56 μg/ml against MM, standard a M. tuberculosis strain H37RV and rifampicin resistant M. tuberculosis clinical isolates, respectively. The crude extract did not show toxicity on peripheral blood mononuclear cells and it was safe in mice following acute oral toxicity test. CONCLUSION The results from this study indicate that some isolated compounds in Morella salicifolia could form potential scaffolds for drug development efforts targeting M. tuberculosis. More studies are needed to further explore the potential of the plant extract and its secondary metabolites in the management of HIV and AIDS-related conditions using in-vivo models.
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Affiliation(s)
- Alphonce Ignace Marealle
- Department of Clinical Pharmacy & Pharmacology, School of Pharmacy, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania; Department of Biological and Pre-clinical Studies, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania.
| | - Ester Innocent
- Department of Biological and Pre-clinical Studies, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania
| | | | - Michael Qwarse
- Department of Natural Products Development and Formulations, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania
| | - Francis Machumi
- Department of Natural Products Development and Formulations, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania
| | - Ramadhani S O Nondo
- Department of Biological and Pre-clinical Studies, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania
| | | | - Mainen Julius Moshi
- Department of Biological and Pre-clinical Studies, Institute of Traditional Medicine, Muhimbili University of Health & Allied Sciences, Dar es Salaam, Tanzania
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16
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Sahoo SK, Gajula SNR, Ahmad MN, Kaul G, Nanduri S, Sonti R, Dasgupta A, Chopra S, Yaddanapudi VM. Bioevaluation of quinoline-4-carbonyl derivatives of piperazinyl-benzothiazinones as promising antimycobacterial agents. Arch Pharm (Weinheim) 2022; 355:e2200168. [PMID: 35876343 DOI: 10.1002/ardp.202200168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 11/12/2022]
Abstract
The quinoline moiety remains a privileged antitubercular (anti-TB) pharmacophore, whereas 8-nitrobenzothiazinones are emerging potent antimycobacterial agents with two investigational candidates in the clinical pipeline. Herein, we report the synthesis and bioevaluation of 30 piperazinyl-benzothiazinone-based quinoline hybrids as prospective anti-TB agents. Preliminary evaluation revealed 24/30 compounds exhibiting substantial activity (minimum inhibitory concentration [MIC] = 0.06-1 µg/ml) against Mycobacterium tuberculosis (Mtb) H37Rv. Cytotoxicity analysis against Vero cells found these to be devoid of any significant toxicity, with the majority displaying a selectivity index of >80. Furthermore, potent nontoxic compounds, when screened against clinical isolates of drug-resistant Mtb strains, demonstrated equipotent inhibition with MIC values of 0.03-0.25 µg/ml. A time-kill study identified a lead compound exhibiting concentration-dependent bactericidal activity, with 10× MIC completely eliminating Mtb bacilli within 7 days. Along with acceptable aqueous solubility and microsomal stability, the optimum active compounds of the series manifested all desirable traits of a promising antimycobacterial candidate.
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Affiliation(s)
- Santosh K Sahoo
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Siva N R Gajula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Mohammad N Ahmad
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Biological Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Grace Kaul
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Biological Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Srinivas Nanduri
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Arunava Dasgupta
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Biological Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Sidharth Chopra
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.,Biological Sciences Division, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Venkata M Yaddanapudi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
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17
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Kumar Sahoo S, Maddipatla S, Nageswara Rao Gajula S, Naiyaz Ahmad M, Kaul G, Nanduri S, Sonti R, Dasgupta A, Chopra S, Madhavi Yaddanapudi V. Identification of nitrofuranylchalcone tethered benzoxazole-2-amines as potent inhibitors of drug resistant Mycobacterium tuberculosis demonstrating bactericidal efficacy. Bioorg Med Chem 2022; 64:116777. [PMID: 35487101 DOI: 10.1016/j.bmc.2022.116777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 04/06/2022] [Accepted: 04/20/2022] [Indexed: 11/02/2022]
Abstract
Ever increasing drug resistance has become an impeding threat that continues to hamper effective tackling of otherwise treatable tuberculosis (TB). Such dismal situation necessitates identification and exploration of multitarget acting newer chemotypes with bactericidal efficacy as a priority, that could efficiently hinder uncontrolled spread of TB. In this context, herein we present design, synthesis and bio-evaluation of chalcone tethered bezoxazole-2-amines as promising anti-TB chemotypes. Preliminary screening of 24 compounds revealed initial hits 3,4,5-trimethoxyphenyl and 5-nitrofuran-2-yl derivative exhibiting selective inhibition of Mycobacterium tuberculosis (Mtb) H37Rv. Further, structural optimization of hit compounds generated 12 analogues, amongst which 5-nitrofuran-2-yl derivatives displayed potent inhibition of not only drug-susceptible (DS) Mtb but also clinical isolates of drug-resistant (DR) Mtb strains equipotently. Moreover, cell viability test against Vero cells found these compounds with favourable selectivity. Time kill analysis led to the identification of the lead compound (E)-1-(4-((5-chlorobenzo[d]oxazol-2-yl)amino)phenyl)-3-(5-nitrofuran-2-yl)prop-2-en-1-one, that demonstrated bactericidal killing of Mtb bacilli. Together with acceptable microsomal stability, the lead compound of the series manifested all desirable traits of a promising antitubercular agent.
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Affiliation(s)
- Santosh Kumar Sahoo
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, Telangana, India
| | - Sarvan Maddipatla
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, Telangana, India
| | - Siva Nageswara Rao Gajula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER),Balanagar, Hyderabad 500037, Telangana, India
| | - Mohammad Naiyaz Ahmad
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow 226031, UP, India; AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Grace Kaul
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow 226031, UP, India; AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srinivas Nanduri
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, Telangana, India
| | - Rajesh Sonti
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER),Balanagar, Hyderabad 500037, Telangana, India.
| | - Arunava Dasgupta
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow 226031, UP, India; AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Sidharth Chopra
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow 226031, UP, India; AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - Venkata Madhavi Yaddanapudi
- Department of Chemical Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad 500037, Telangana, India.
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18
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Kumar Sahoo S, Naiyaz Ahmad M, Kaul G, Nanduri S, Dasgupta A, Chopra S, Madhavi Yaddanapudi V. Exploration of Isoxazole-Carboxylic Acid Methyl Ester Based 2-Substituted Quinoline Derivatives as Promising Antitubercular Agents. Chem Biodivers 2022; 19:e202200324. [PMID: 35653161 DOI: 10.1002/cbdv.202200324] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/02/2022] [Indexed: 12/12/2022]
Abstract
In pursuit of potent anti-TB agents active against drug resistant tuberculosis (DR-TB), herein we report synthesis and bio-evaluation of a new series of isoxazole-carboxylic acid methyl ester based 2-substituted quinoline derivatives. Preliminary evaluation indicated selectivity towards Mtb H37Rv, with no inhibition of non-tubercular mycobacterial (NTM) & bacterial pathogen panel. Out of 36 synthesized compounds, majority exhibited substantial inhibition of Mtb H37Rv (MIC 0.5-8 μg/mL). Cell viability test against Vero cells revealed no significant cytotoxicity. Further, screening against drug resistant strains (DR-Mtb) found hit compound displaying promising potency (MIC 1-4 μg/mL). Structure optimization of the hit led to the identification of lead compound demonstrating potent inhibition of both drug-susceptible Mtb (MIC 0.12 μg/mL) and drug-resistant Mtb (MIC 0.25-0.5 μg/mL) along with a high selectivity index (SI) >80. Taken together, with appreciable selectivity and potent activity, these chemotypes show prospect to be turned into a potential anti-TB candidate.
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Affiliation(s)
- Santosh Kumar Sahoo
- Department of chemical sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, India
| | - Mohammad Naiyaz Ahmad
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow, 226031, UP, India.,AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Grace Kaul
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow, 226031, UP, India.,AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Srinivas Nanduri
- Department of chemical sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, India
| | - Arunava Dasgupta
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow, 226031, UP, India.,AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sidharth Chopra
- Division of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute, Sector 10, Janakipuram Extension, Sitapur Road, Lucknow, 226031, UP, India.,AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Venkata Madhavi Yaddanapudi
- Department of chemical sciences, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, India
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19
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Mycobacterium tuberculosis and Pulmonary Rehabilitation: From Novel Pharmacotherapeutic Approaches to Management of Post-Tuberculosis Sequelae. J Pers Med 2022; 12:jpm12040569. [PMID: 35455684 PMCID: PMC9027178 DOI: 10.3390/jpm12040569] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 01/27/2023] Open
Abstract
Tuberculosis (TB) is still a worldwide public health burden, as more than 1.3 million deaths are expected to be reported in 2021. Even though almost 20 million patients have completed specific anti-TB treatment and survived in 2020, little information is known regarding their pulmonary sequelae, quality of life, and their need to follow rehabilitation services as researchers shifted towards proper diagnosis and treatment rather than analyzing post-disease development. Understanding the underlying immunologic and pathogenic mechanisms during mycobacterial infection, which have been incompletely elucidated until now, and the development of novel anti-TB agents could lead to the proper application of rehabilitation care, as TB sequelae result from interaction between the host and Mycobacterium tuberculosis. This review addresses the importance of host immune responses in TB and novel potential anti-TB drugs’ mechanisms, as well as the assessment of risk factors for post-TB disease and usefulness of guidance and optimization of pulmonary rehabilitation. The use of rehabilitation programs for patients who successfully completed anti-tuberculotic treatment represents a potent multifaceted measure in preventing the increase of mortality rates, as researchers conclude that a patient with a TB diagnosis, even when properly completing pharmacotherapy, is threatened by a potential life loss of 4 years, in comparison to healthy individuals. Dissemination of pulmonary rehabilitation services and constant actualization of protocols could strengthen management of post-TB disease among under-resourced individuals.
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