BCG Vaccination in Humans Elicits Trained Immunity via the Hematopoietic Progenitor Compartment.
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de Bree, L Charlotte J
Blok, Bas A
van der Velden, Walter J F M
Bremmers, M E J
van Crevel, Reinout
Koeken, Valerie A C M
van Ingen, Jakko
Benn, Christine S
Schultze, Joachim L
Joosten, Leo A B
Netea, Mihai G
MetadataShow full item record
AbstractInduction of trained immunity by Bacille-Calmette-Guérin (BCG) vaccination mediates beneficial heterologous effects, but the mechanisms underlying its persistence and magnitude remain elusive. In this study, we show that BCG vaccination in healthy human volunteers induces a persistent transcriptional program connected to myeloid cell development and function within the hematopoietic stem and progenitor cell (HSPC) compartment in the bone marrow. We identify hepatic nuclear factor (HNF) family members 1a and b as crucial regulators of this transcriptional shift. These findings are corroborated by higher granulocyte numbers in BCG-vaccinated infants, HNF1 SNP variants that correlate with trained immunity, and elevated serum concentrations of the HNF1 target alpha-1 antitrypsin. Additionally, transcriptomic HSPC remodeling was epigenetically conveyed to peripheral CD14+ monocytes, displaying an activated transcriptional signature three months after BCG vaccination. Taken together, transcriptomic, epigenomic, and functional reprogramming of HSPCs and peripheral monocytes is a hallmark of BCG-induced trained immunity in humans.
CitationCell Host Microbe. 2020;S1931-3128(20)30296-1. doi:10.1016/j.chom.2020.05.014.
AffiliationCiiM, Zentrum für individualisierte Infektionsmedizin, Feodor-Lynen-Str.7, 30625 Hannover.
PublisherElsevier (Cell Press)
JournalCell host & microbe
PubMed Central IDPMC7295478
The following license files are associated with this item:
- Creative Commons
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International
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