Cited by 131Genomics and Chromatin DynamicsHematopoietic Stem Cell TransplantationT-cell and B-cell Immunology

Two distinct auto-regulatory loops operate at the PU.1 locus in B cells and myeloid cells

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Leddin, Mathias, Perrod, Chiara, Hoogenkamp, Maarten, Ghani, Saeed, Assi, Salam, Heinz, Sven, Wilson, Nicola K., Follows, George +9 more·2011·Blood

Abstract

The transcription factor PU.1 occupies a central role in controlling myeloid and early B-cell development, and its correct lineage-specific expression is critical for the differentiation choice of hematopoietic progenitors. However, little is known of how this tissue-specific pattern is established. We previously identified an upstream regulatory cis element whose targeted deletion in mice decreases PU.1 expression and causes leukemia. We show here that the upstream regulatory cis element alone is insufficient to confer physiologic PU.1 expression in mice but requires the cooperation with other, previously unidentified elements. Using a combination of transgenic studies, global chromatin assays, and detailed molecular analyses we present evidence that PU.1 is regulated by a novel mechanism involving cross talk between different cis elements together with lineage-restricted autoregulation. In this model, PU.1 regulates its expression in B cells and macrophages by differentially associating with cell type–specific transcription factors at one of its cis-regulatory elements to establish differential activity patterns at other elements.

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Crossref · 10.1182/blood-2010-08-302976

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  • In pro-T cells, a key positive regulatory partner of PU.1 is Runx1, which has long been known to interact with PU.1 to form a functional complex at myeloid positive regulatory target sites.

    “For PU.1 in pro-T cells, IRF and C/EBP family partners are mostly not available, but a key positive regulatory partner is Runx1 (previously known as AML1 or CBFα2), which has long been known to interact with PU.1 (and C/EBPα) to form a functional complex at its myeloid positive regulatory target sites (9, 112, 113).”

    From Mechanisms of Action of Hematopoietic Transcription Factor PU.1 in Initiation of T-Cell Development (2019) · cites this paper as [113]

    The section on regulation of PU.1 in mice says RUNX1 activates the PU.1 upstream regulatory element early in development, supporting a positive regulatory role. It does not establish that Runx1 is a key PU.1 partner in pro-T cells or that the two form a functional complex at myeloid target sites; the paper examines regulation at the PU.1 locus in B and myeloid cells. Page numbers are unavailable in our copy. (LLM, conf=0.84)

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Research works printed but not linked: 2

  1. Iwasaki H, Somoza C, Shigematsu H, et al. Dis- tinctive and indispensable roles of PU.1 in main- tenance of hematopoietic stem cells and their dif- ferentiation. Blood. 2005;106(5):1590-1600.
  2. Friedman AD. Transcriptional regulation of myelo- poiesis. Int J Hematol. 2002;75(5):466-472.

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Authors
Leddin, M., Perrod, C., Hoogenkamp, M., Ghani, S., Assi, S., Heinz, S., Wilson, N. K., Follows, G., Schönheit, J., Vockentanz, L., Mosammam, A. M., Chen, W., Tenen, D. G., Westhead, D. R., Göttgens, B., Bonifer, C., & Rosenbauer, F.
Affiliations
  • Max Delbrück Center (DE)
  • University of Leeds (GB)
  • University of California San Diego (US)
  • University of Cambridge (GB)
  • Harvard University (US)
Venue
Blood
Published
2011-03-10
Volume
117
Issue
10
Pages
2827-2838
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2070417053
Cited by
131
References
51
Citations by year
2026: 4 · 2025: 5 · 2024: 6 · 2023: 9 · 2022: 5 · 2021: 6 · 2020: 4 · 2019: 8 · 2018: 3 · 2017: 10 · 2016: 11 · 2015: 8 · 2014: 16 · 2013: 19 · 2012: 10
FWCI
6.76
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion)
  • MDC Repository (Max-Delbrueck-Center for Molecular Medicine) (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
Funders
  • National Centre for the Replacement, Refinement and Reduction of Animals in Research (G0900729/1)
  • Biotechnology and Biological Sciences Research Council (BB/I001220/1)
  • National Cancer Institute (R01 CA41456, R01CA041456)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
PU.1, transcriptional autoregulation, cis-regulatory elements, B cells, myeloid cells, macrophages, lineage-specific gene expression, hematopoietic differentiation, upstream regulatory sequences, leukemia, chromatin binding
MeSH terms
Proto-Oncogene Protein Spi-1, Animals, B-Lymphocytes, Cell Separation, Flow Cytometry, Gene Expression Regulation, Hematopoiesis, Humans, Mice, Transgenic, Proto-Oncogene Proteins, Blotting, Southern, Blotting, Western, Trans-Activators, Gene Expression, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Myeloid Cells, Feedback, Physiological, Regulatory Elements, Transcriptional, Mice

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