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Generating three-dimensional human granulomas in vitro to study Mycobacterium tuberculosis-host interaction

Arbues, Ainhoa and Kammueller, Michael and Portevin, Damien (2020) Generating three-dimensional human granulomas in vitro to study Mycobacterium tuberculosis-host interaction. BIO-PROTOCOL, 10 (22). ISSN 2331-8325

Abstract

Granulomas are organized multicellular structures that constitute the hallmark of an infection by the human pathogen Mycobacterium tuberculosis (Mtb). A better understanding of the complex host-Mtb interactions within the granuloma’s environment may lead to new therapeutic or preventive tools to improve the control of the tuberculosis pandemic. To date, several in vitro models that are able to mimic human nascent granulomas have been reported. Here we describe a protocol in which Mtb-infected human peripheral blood mononuclear cells (PBMCs) are embedded within a collagen matrix leading to the formation of three-dimensional micro-granulomas. Subsequently, PBMCs and Mtb can be retrieved allowing multiparametric readouts from both the host and the pathogen. In addition to the incorporation of a physiological extracellular matrix, this model has the advantage of recapitulating dormant-like Mtb features, as well as reproducing Mtb resuscitation observed under immunomodulatory treatments.

Item Type: Article
Date Deposited: 04 Feb 2021 00:45
Last Modified: 04 Feb 2021 00:45
URI: https://oak.novartis.com/id/eprint/42965

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