期刊
IMMUNOLOGY
卷 159, 期 1, 页码 121-129出版社
WILEY
DOI: 10.1111/imm.13131
关键词
HIF-1 alpha; immunopathology; inflammation; tuberculosis
类别
资金
- Northern Portugal Regional Operational Programme (NORTE 2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (FEDER) [NORTE-01-0145-FEDER-000013]
- Fundos Europeus Estruturais e de Investimento [POCI-01-0145-FEDER-028463]
- Fundacao para a Ciencia e a Tecnologia (FCT), I.P. [PTDC/SAU-INF/28463/2017]
- FCT [IF/01390/2014, SFRH/BD/89871/2012, SFRH/BD/120371/2016, PD/BD/137447/2018]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/89871/2012, SFRH/BD/120371/2016, PD/BD/137447/2018, PTDC/SAU-INF/28463/2017] Funding Source: FCT
The transcription factor hypoxia-inducible factor-1 alpha (HIF-1 alpha) is a key regulator of the response and function of myeloid cells in hypoxic and inflammatory microenvironments. To define the role of HIF-1 alpha in tuberculosis, the progression of aerosol Mycobacterium tuberculosis infection was analysed in mice deficient in HIF-1 alpha in the myeloid lineage (mHIF-1 alpha(-/-)). We show that myeloid HIF-1 alpha is not required for the containment of the infection, as both wild-type (WT) and mHIF-1 alpha(-/-) mice mounted normal Th1 responses and maintained control of bacterial growth throughout infection. However, during chronic infection mHIF-1 alpha(-/-) mice developed extensive lymphocytic inflammatory involvement of the interstitial lung tissue and died earlier than WT mice. These data support the hypothesis that HIF-1 alpha activity coordinates the response of myeloid cells during M. tuberculosis infection to prevent excessive leucocyte recruitment and immunopathological consequences to the host.
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