Cited by 102Immune cells in cancerT-cell and B-cell ImmunologyDevelopmental Biology and Gene Regulation

Bhlhe40 and Bhlhe41 Transcription Factors Regulate Alveolar Macrophage Self‐renewal and Identity

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Rauschmeier, René, Gustafsson, Charlotte, Reinhardt, Annika, A‐Gonzalez, Noelia, Tortola, Luigi, Cansever, Dilay, Subramanian, Sethuraman, Taneja, Reshma +6 more·2019·The EMBO Journal

Abstract

Tissues in multicellular organisms are populated by resident macrophages, which perform both generic and tissue-specific functions. The latter are induced by signals from the microenvironment and rely on unique tissue-specific molecular programs requiring the combinatorial action of tissue-specific and broadly expressed transcriptional regulators. Here, we identify the transcription factors Bhlhe40 and Bhlhe41 as novel regulators of alveolar macrophages (AMs)-a population that provides the first line of immune defense and executes homeostatic functions in lung alveoli. In the absence of these factors, AMs exhibited decreased proliferation that resulted in a severe disadvantage of knockout AMs in a competitive setting. Gene expression analyses revealed a broad cell-intrinsic footprint of Bhlhe40/Bhlhe41 deficiency manifested by a downregulation of AM signature genes and induction of signature genes of other macrophage lineages. Genome-wide characterization of Bhlhe40 DNA binding suggested that these transcription factors directly repress the expression of lineage-inappropriate genes in AMs. Taken together, these results identify Bhlhe40 and Bhlhe41 as key regulators of AM self-renewal and guardians of their identity.

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Crossref · 10.15252/embj.2018101233

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Authors
Rauschmeier, R., Gustafsson, C., Reinhardt, A., A‐Gonzalez, N., Tortola, L., Cansever, D., Subramanian, S., Taneja, R., Rossner, M. J., Sieweke, M. H., Greter, M., Månsson, R., Busslinger, M., & Kreslavsky, T.
Affiliations
  • Research Institute of Molecular Pathology (AT)
  • Karolinska Institutet (SE)
  • Karolinska University Hospital (SE)
  • ETH Zurich (CH)
  • University of Zurich (CH)
  • Centre National de la Recherche Scientifique (FR)
  • National University of Singapore (SG)
  • Ludwig-Maximilians-Universität München (DE)
Corresponding author
Kreslavsky, Taras
Venue
The EMBO Journal
Published
2019-08-15
Volume
38
Issue
19
Pages
e101233-e101233
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W2967087236
Cited by
102
References
73
Citations by year
2026: 12 · 2025: 13 · 2024: 21 · 2023: 15 · 2022: 18 · 2021: 14 · 2020: 6 · 2019: 3
FWCI
4.10
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion)
  • HAL (submittedVersion)
Funders
  • Austrian Science Fund (P28841)
  • Vetenskapsrådet (2017‐01118)
  • Österreichische Forschungsförderungsgesellschaft (FFG‐852936)
  • Agence Nationale de la Recherche (ANR‐11‐BSV3‐0026)
  • Fondation pour la Recherche Médicale (DEQ. 20110421320)
  • H2020 European Research Council (695093 MacAge)
  • Deutsche Forschungsgemeinschaft (RE 4264/1‐1)
  • Cancerfonden (CAN 2018/710)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
BHLHE40, BHLHE41, alveolar macrophages, macrophage self-renewal, macrophage identity, transcription factors, lineage-specific gene expression, DNA binding, competitive fitness, lung homeostasis, macrophage differentiation
MeSH terms
Cell Self Renewal, Acetylation, Animals, Cell Differentiation, Cell Survival, Histones, Organ Specificity, Phenotype, Down-Regulation, Macrophages, Alveolar, Sequence Analysis, RNA, Homeodomain Proteins, Gene Expression Profiling, Cell Proliferation, Mice, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins, Gene Knockdown Techniques

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