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Page 1
Mycobacterial Biofilms.
Richards JP, Ojha AK. Richards JP, et al. Among authors: ojha ak. Microbiol Spectr. 2014 Oct;2(5). doi: 10.1128/microbiolspec.MGM2-0004-2013. Microbiol Spectr. 2014. PMID: 26104368 Free article. Review.
Bacteria have a natural propensity to grow as sessile, matrix-encapsulated, multicellular communities called biofilms. Formation of biofilms proceeds through genetically programmed, distinct developmental stages signaled by intricate networks of communication among …
Bacteria have a natural propensity to grow as sessile, matrix-encapsulated, multicellular communities called biofilms. Formation of …
Mycobacterium abscessus research: learning from challenges.
Treen RZ, Gonzalez-Juarrero M, Jackson M, Lapierre P, Kremer L, Ghosh P, Ojha AK. Treen RZ, et al. Among authors: ojha ak. J Bacteriol. 2026 Mar 19;208(3):e0043625. doi: 10.1128/jb.00436-25. Epub 2026 Feb 4. J Bacteriol. 2026. PMID: 41636541 Free PMC article. Review.
Mycobacterium abscessus (Mab), a rapidly growing mycobacterial species with intrinsic and acquired resistance to multiple antibiotics, is an emerging public health concern. ...The number of publications entitled "Mycobacterium abscessus" has increased by ~300% over …
Mycobacterium abscessus (Mab), a rapidly growing mycobacterial species with intrinsic and acquired resistance to multiple antibiotics …
Growth of Mycobacterium tuberculosis biofilms.
Kulka K, Hatfull G, Ojha AK. Kulka K, et al. Among authors: ojha ak. J Vis Exp. 2012 Feb 15;(60):3820. doi: 10.3791/3820. J Vis Exp. 2012. PMID: 22371116 Free PMC article.
The tolerance to environmental stress is likely facilitated by EPS, and perhaps by the physiological adaptation of individual bacilli to heterogeneous microenvironments within the complex architecture of biofilms (7). In a series of recent papers we established that M. tub …
The tolerance to environmental stress is likely facilitated by EPS, and perhaps by the physiological adaptation of individual bacilli to het …
Fatty acid metabolism in neutrophils promotes lung damage and bacterial replication during tuberculosis.
Sankar P, Ramos RB, Corro J, Mishra LK, Nafiz TN, Bhargavi G, Saqib M, Poswayo SKL, Parihar SP, Cai Y, Subbian S, Ojha AK, Mishra BB. Sankar P, et al. Among authors: ojha ak. PLoS Pathog. 2024 Oct 4;20(10):e1012188. doi: 10.1371/journal.ppat.1012188. eCollection 2024 Oct. PLoS Pathog. 2024. PMID: 39365825 Free PMC article.
Mycobacterium tuberculosis (Mtb) infection induces a marked influx of neutrophils into the lungs, which intensifies the severity of tuberculosis (TB). ...
Mycobacterium tuberculosis (Mtb) infection induces a marked influx of neutrophils into the lungs, which intensifies the severity of t …
Genetic dissection of mycobacterial biofilms.
Ojha AK, Jacobs WR Jr, Hatfull GF. Ojha AK, et al. Methods Mol Biol. 2015;1285:215-26. doi: 10.1007/978-1-4939-2450-9_12. Methods Mol Biol. 2015. PMID: 25779318 Free PMC article.
Importantly, development of these structures is genetically programmed, and defective biofilms of isogenic mutants harbor fewer persisters. Thus, genetic analysis of mycobacterial biofilms in vitro could potentially be a powerful tool to unravel the biology of drug …
Importantly, development of these structures is genetically programmed, and defective biofilms of isogenic mutants harbor fewer persi …
Kupyaphores are zinc homeostatic metallophores required for colonization of Mycobacterium tuberculosis.
Mehdiratta K, Singh S, Sharma S, Bhosale RS, Choudhury R, Masal DP, Manocha A, Dhamale BD, Khan N, Asokachandran V, Sharma P, Ikeh M, Brown AC, Parish T, Ojha AK, Michael JS, Faruq M, Medigeshi GR, Mohanty D, Reddy DS, Natarajan VT, Kamat SS, Gokhale RS. Mehdiratta K, et al. Among authors: ojha ak. Proc Natl Acad Sci U S A. 2022 Feb 22;119(8):e2110293119. doi: 10.1073/pnas.2110293119. Proc Natl Acad Sci U S A. 2022. PMID: 35193957 Free PMC article.
Mycobacterium tuberculosis (Mtb) endures a combination of metal scarcity and toxicity throughout the human infection cycle, contributing to complex clinical manifestations. ...These molecules, termed kupyaphores, are produced by a 10.8 kbp biosynthetic cluster and consists …
Mycobacterium tuberculosis (Mtb) endures a combination of metal scarcity and toxicity throughout the human infection cycle, contribut …
Mycobacterial Biofilms: Revisiting Tuberculosis Bacilli in Extracellular Necrotizing Lesions.
Basaraba RJ, Ojha AK. Basaraba RJ, et al. Among authors: ojha ak. Microbiol Spectr. 2017 Jun;5(3):10.1128/microbiolspec.tbtb2-0024-2016. doi: 10.1128/microbiolspec.TBTB2-0024-2016. Microbiol Spectr. 2017. PMID: 28597824 Free PMC article. Review.
Under detergent-free in vitro conditions, Mycobacterium tuberculosis, the etiological agent of tuberculosis in humans, spontaneously forms organized multicellular structures called biofilms. ...In this article, we present arguments that extracellular M. tuberculosis …
Under detergent-free in vitro conditions, Mycobacterium tuberculosis, the etiological agent of tuberculosis in humans, spontaneously …
Intrapulmonary Treatment with Mycobacteriophage LysB Rapidly Reduces Mycobacterium abscessus Burden.
Hurst-Hess K, Walz A, Yang Y, McGuirk H, Gonzalez-Juarrero M, Hatfull GF, Ghosh P, Ojha AK. Hurst-Hess K, et al. Among authors: ojha ak. Antimicrob Agents Chemother. 2023 Jun 15;67(6):e0016223. doi: 10.1128/aac.00162-23. Epub 2023 May 8. Antimicrob Agents Chemother. 2023. PMID: 37154689 Free PMC article.
Intrinsic and acquired antibiotic resistance in Mycobacterium abscessus presents challenges in infection control, and new therapeutic strategies are needed. ...
Intrinsic and acquired antibiotic resistance in Mycobacterium abscessus presents challenges in infection control, and new therapeutic …
Progression from remodeling to hibernation of ribosomes in zinc-starved mycobacteria.
Li Y, Corro JH, Palmer CD, Ojha AK. Li Y, et al. Among authors: ojha ak. Proc Natl Acad Sci U S A. 2020 Aug 11;117(32):19528-19537. doi: 10.1073/pnas.2013409117. Epub 2020 Jul 28. Proc Natl Acad Sci U S A. 2020. PMID: 32723821 Free PMC article.
Finally, we demonstrate zinc-responsive binding of Mpy to ribosomes in Mycobacterium tuberculosis (Mtb) and show Mpy-dependent antibiotic tolerance of Mtb in mouse lungs. Together, we propose that ribosome hibernation is a specific and conserved response to zinc depletion …
Finally, we demonstrate zinc-responsive binding of Mpy to ribosomes in Mycobacterium tuberculosis (Mtb) and show Mpy-dependent antibi …
44 results