Reference Database

YearReference
2021
Pulmonary MTBVAC vaccination induces immune signatures previously correlated with prevention of tuberculosis infection.
Dijkman, Karin
Aguilo, Nacho
Boot, Charelle
Hofman, Sam O
Sombroek, Claudia C
Vervenne, Richard A W
Kocken, Clemens H M
Marinova, Dessislava
Thole, Jelle
Rodríguez, Esteban
Vierboom, Michel P M
Haanstra, Krista G
Puentes, Eugenia
Martin, Carlos
Verreck, Frank A W
Cell reports. Medicine 2021 Jan 19;2: 100187
Abstract

To fight tuberculosis, better vaccination strategies are needed. Live attenuated -derived vaccine, MTBVAC, is a promising candidate in the pipeline, proven to be safe and immunogenic in humans so far. Independent studies have shown that pulmonary mucosal delivery of Bacillus Calmette-Guérin (BCG), the only tuberculosis (TB) vaccine available today, confers superior protection over standard intradermal immunization. Here we demonstrate that mucosal MTBVAC is well tolerated, eliciting polyfunctional T helper type 17 cells, interleukin-10, and immunoglobulins in the airway and yielding a broader antigenic profile than BCG in rhesus macaques. Beyond our previous work, we show that local immunoglobulins, induced by MTBVAC and BCG, bind to and enhance pathogen uptake. Furthermore, after pulmonary vaccination, but not infection, local T cells expressed high levels of mucosal homing and tissue residency markers. Our data show that pulmonary MTBVAC administration has the potential to enhance its efficacy and justifies further exploration of mucosal vaccination strategies in preclinical efficacy studies.

Forward to a friend