Publications by Swapna Uplekar

Genomic and transcriptomic analysis of the streptomycin-dependent Mycobacterium tuberculosis strain 18b

Stewart Cole, Claudia Sala, Andrej Benjak, Ming Zhang, Swapna Uplekar, Jérémie Piton

Background: The ability of Mycobacterium tuberculosis to establish a latent infection (LTBI) in humans confounds the treatment of tuberculosis. Consequently, there is a need to discover new therapeutic agents that can kill M. tuberculosis both during activ ...

2016

Cross-Resistance between Clofazimine and Bedaquiline through Upregulation of MmpL5 in Mycobacterium tuberculosis

Stewart Cole, Ruben Hartkoorn, Swapna Uplekar

The antileprosy drug clofazimine is also of interest for the treatment of multidrug-resistant tuberculosis. To understand possible resistance mechanisms, clofazimine-resistant Mycobacterium tuberculosis mutants were isolated in vitro, and, unexpectedly, fo ...

Amer Soc Microbiology2014

The PhoP-Dependent ncRNA Mcr7 Modulates the TAT Secretion System in Mycobacterium tuberculosis

Stewart Cole, Claudia Sala, Jacques Rougemont, Andrej Benjak, Swapna Uplekar

The PhoPR two-component system is essential for virulence in Mycobacterium tuberculosis where it controls expression of approximately 2% of the genes, including those for the ESX-1 secretion apparatus, a major virulence determinant. Mutations in phoP lead ...

Public Library of Science2014

High-resolution transcriptome and genome-wide dynamics of RNA polymerase and NusA in Mycobacterium tuberculosis

Stewart Cole, Claudia Sala, Jacques Rougemont, Swapna Uplekar

To construct a regulatory map of the genome of the human pathogen, Mycobacterium tuberculosis, we applied two complementary high-resolution approaches: strand-specific RNA-seq, to survey the global transcriptome, and ChIP-seq, to monitor the genome-wide dy ...

Oxford University Press2013

High-resolution detection of DNA binding sites of the global transcriptional regulator GlxR in Corynebacterium glutamicum

Stewart Cole, Claudia Sala, Swapna Uplekar

The transcriptional regulator GlxR has been characterized as a global hub within the gene-regulatory network of Corynebacterium glutamicum. Chromatin immunoprecipitation with a specific anti-GlxR antibody and subsequent high-throughput sequencing (ChIP-seq ...

Soc General Microbiology2013

Genomics and transcriptomics of the Mycobacterium tuberculosis complex

Swapna Uplekar

The goal of eliminating tuberculosis (TB) by 2050 depends on the development of improved TB diagnostics, drugs and vaccines. Advances in these areas require a deep understanding of the disease and its causative agent, Mycobacterium tuberculosis (M. tb). My ...

EPFL2012

Virulence Regulator EspR of Mycobacterium tuberculosis Is a Nucleoid-Associated Protein

Stewart Cole, Florence Pojer, Jacques Rougemont, Claudia Sala, Ruben Hartkoorn, Swapna Uplekar, Benjamin Blasco, Jeffrey Chen

The principal virulence determinant of Mycobacterium tuberculosis (Mtb), the ESX-1 protein secretion system, is positively controlled at the transcriptional level by EspR. Depletion of EspR reportedly affects a small number of genes, both positively or neg ...

Public Library of Science2012

A Point Mutation in cycA Partially Contributes to the D-cycloserine Resistance Trait of Mycobacterium bovis BCG Vaccine Strains

Stewart Cole, Swapna Uplekar, Jeffrey Chen

In mycobacteria, CycA a D-serine, L-and D-alanine, and glycine transporter also functions in the uptake of D-cycloserine, an important second-line anti-tubercular drug. A single nucleotide polymorphism identified in the cycA gene of BCG was hypothesized to ...

Public Library of Science2012

Genome-Wide Definition of the SigF Regulon in Mycobacterium tuberculosis

Stewart Cole, Claudia Sala, Jacques Rougemont, Ruben Hartkoorn, Swapna Uplekar, Philippe Busso

In Mycobacterium tuberculosis the alternative sigma factor SigF controls the expression of a particular subset of genes by altering RNA polymerase specificity. Here, we utilize two genome-wide approaches to identify SigF-binding sites: chromatin immunoprec ...

American Society for Microbiology2012

Towards a new tuberculosis drug: pyridomycin - nature's isoniazid

Stewart Cole, Florence Pojer, Claudia Sala, Ruben Hartkoorn, Joao Pedro De Almeida Neres, Swapna Uplekar, Raju Mukherjee, Sophie Magnet

Tuberculosis, a global threat to public health, is becoming untreatable due to widespread drug resistance to frontline drugs such as the InhA-inhibitor isoniazid. Historically, by inhibiting highly vulnerable targets, natural products have been an importan ...

Wiley Open Access2012