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June 20, 2026Microbiology SpectrumOpen Access

Mycobacterium tuberculosis does not inhibit NLRP1 and pyrin inflammasomes in human macrophages

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Authors

AGAkshaya GaneshSRShivangi RastogiVBVolker Briken

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Overview

Randomized trial investigates inflammasome activity inhibition in macrophages, indicating insights into immune response.

Key Points

  • This study aims to determine if Mycobacterium tuberculosis or other mycobacteria inhibit NLRP1 and pyrin inflammasomes in human macrophages.
  • Investigated inflammasome activation using LPS and specific toxins in human macrophages.
  • Comparative analysis of inhibition by Mycobacterium tuberculosis, Mycobacterium kansasii, and Mycobacterium smegmatis.
  • Assessed inflammasome responses after priming and treatment in both human and murine macrophages.
  • Mycobacterium tuberculosis did not inhibit NLRP1 or pyrin inflammasomes in human macrophages.
  • Some inhibition was observed in murine macrophages for Mkan and Msmeg at specific time points but not for Mtb.
  • Findings indicate that mycobacteria do not consistently inhibit these inflammasomes in humans under tested conditions.

Cite This Study

Ganesh et al. (2026) studied this question.

synapsesocial.com/papers/6a362e91db0793dc1a53642dhttps://doi.org/10.1128/spectrum.04121-25
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