Project description:To compare gene expression changes induced by infection with Mycobacterium tuberculosis (Mtb) with changes induced by purified Mtb products, we infected THP-1 cells with Mtb strain H37Rv or treated with purified Mtb products, then performed RNAseq.
Project description:Comparison of gene expression profile of the whiB4 mutant strain of Mycobacterium tuberculosis with the wild type Mycobacterium tuberculosis H37RV Mtb WhiB4 mutant mRNA was compared with the mRNA of wtMtb H37RV under aerobic conditons
Project description:Comparison of gene expression profile of the whiB4 mutant strain of Mycobacterium tuberculosis with the wild type Mycobacterium tuberculosis H37RV Mtb WhiB4 mutant mRNA was compared with the mRNA of wtMtb H37RV under aerobic conditons Aerbic conditions OD600 nm of 0.4, MtbWhiB4KO vs wtMtb, biological replicates: 3 wt Mtb H37RV and 3 MtbWhiB4 KO
Project description:Extracellular Mycobacterium tuberculosis (Mtb) aggregates can evade phagocytosis and intracellular host-cell defenses by inducing macrophage killing. We showed that Mtb aggregates require a functional ESX-1 type VII secretion system to induce cell death upon contact with macrophages. We used quantitative proteomics to compare the secretome of a esxA mutant strain with the wild type reference to identify secreted bacteria factors involved in macrophage death induction.
Project description:Mycobacterium tuberculosis (MTB) is a species of pathogenic bacteria and the causative agent of tuberculosis. The type strain H37Rv has been sequenced in 1998, while many previous studies found its predicted genes exhibit frequent errors, particularly in start codons. Here, we applied a TMPP [(N-Succinimidyloxycarbonylmethyl) tris (2,4,6-trimethoxyphenyl) phosphonium bromide] labeling combined with StageTip separating strategy to characterize the N-terminal peptides. We identified 2,598 annotated proteins, which 1,078 proteins were labeled by TMPP.
Project description:We report the application of RNA-seq technology for high-throughput profiling of gene transcription in RAW264.7 infected with Mycobacterium tuberculosis H37Ra. By obtaining over six billion bases of sequence from mRNA, we generated genome-wide gene transcription maps of RAW264.7 infected with CdhM-related Mycobacterium tuberculosis H37Ra. We find that numerous genes involved in ER stress are significantly affected by CdhM. This finding indicates that CdhM may induce ER stress during Mtb infection of host cells.
Project description:Mycobacterium tuberculosis(Mtb) is known to reside in cells of innate immune system- macrophages and dendritic cells. A variety of non -conventional cell typeslike adipocytes, mesenchyal stem cells and osteoclasts can also be infected with Mtb. However, cellular transcriptional adapations enabling survival of Mtb in these cells remain known. We used microarrays to understand global changes in transcriptional profiling during macrophage to osteoclast transition in presence of Mycobacterium tuberculosis.