Using CRISPR genome screens and dual transcriptome analyses to dissect host-pathogen interactions in tuberculosis

Projektinformationen

Host-TB

ID Finanzhilfevereinbarung: 832721

DOI

10.3030/832721

Projekt abgeschlossen

EK-Unterschriftsdatum 18 April 2019

Startdatum 1 Juni 2019

Enddatum 31 Mai 2026

Finanziert unter

• EXCELLENT SCIENCE - European Research Council (ERC)

Gesamtkosten

€ 2 160 926,00

EU-Beitrag

€ 2 160 926,00

Koordiniert durch

THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE
United Kingdom

Periodic Reporting for period 4 - Host-TB (Using CRISPR genome screens and dual transcriptome analyses to dissect host-pathogen interactions in tuberculosis)

Berichtszeitraum: 2023-10-01 bis 2025-03-31

Zusammenfassung vom Kontext und den Gesamtzielen des Projekts

With more than 10 million cases annually, tuberculosis (TB) remains a global health problem. TB epidemic is exacerbated by the spread of multidrug-resistant TB. Host-directed therapies can improve immune mechanisms by augmenting the ability of host cells to kill M. tuberculosis bacilli or by modulating the immune response to prevent excessive inflammation, cell death and tissue damage in the human body. Progress with the development of new host-directed therapies has been slowed down by the limited understanding of host-pathogen interactions during M. tuberculosis infection. Screens of the whole human genome can identify novel genes involved in the immune responses to M. tuberculosis infection and susceptibility to TB. Previously, we successfully used genome-wide association studies to identify human genes associated with susceptibility to TB. Here, we will use the groundbreaking CRISPR technology to screen the human genome in macrophages infected with M. tuberculosis and discover genes that are critically involved in host-pathogen interactions. Then, we will comprehensively characterise cellular signalling pathways that mediate impacts of these genes on both the human macrophage and the intracellular bacilli using dual transcriptome analyses and high-throughput microscopy assays. This novel approach will dissect crucial mechanisms of host-pathogen interaction during M. tuberculosis infection.

Arbeit, die ab Beginn des Projekts bis zum Ende des durch den Bericht erfassten Berichtszeitraums geleistet wurde, und die wichtigsten bis dahin erzielten Ergebnisse

We performed the screens of human genome in CRISPR-Cas9-edited macrophages after their infection with M. tuberculosis. These screens revealed several genes that regulate death of human macrophages during infection.

Fortschritte, die über den aktuellen Stand der Technik hinausgehen und voraussichtliche potenzielle Auswirkungen (einschließlich der bis dato erzielten sozioökonomischen Auswirkungen und weiter gefassten gesellschaftlichen Auswirkungen des Projekts)

The novel human genes that affect susceptibility of macrophages to M. tuberculosis infection will be now validated in the follow-up experiments. Details of the mechanism of macrophage death will be thoroughly characterised for each of the newly identified genes and the role of virulence factors of M. tuberculosis will be also studied. Proteins encoded by these genes and their signalling pathways may provide novel targets for host-directed therapy of tuberculosis.

Human macrophages engulfing mycobacteria