Cited by 44Erythropoietin and Anemia TreatmentHematopoietic Stem Cell TransplantationCancer, Hypoxia, and Metabolism

The microenvironment for erythropoiesis is regulated by HIF-2α through VCAM-1 in endothelial cells

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Yamashita, Toshiharu, Ohneda, Osamu, Sakiyama, Ai, Iwata, Fumiko, Ohneda, Kinuko, Fujii-Kuriyama, Yoshiaki·2008·Blood

Abstract

Erythropoiesis is a dynamic process regulated by oxygen in vertebrates. Recent evidence has indicated that erythropoietin (Epo) expression is regulated by hypoxia-inducible transcription factors (HIFs), HIF-2alpha in particular. In this study, we report that knockdown mutation of HIF-2alpha in mice (kd/kd) results in normocytic anemia, despite Epo induction in response to hypoxia not being severely affected. Transplantation analyses clearly demonstrated that the hematopoietic microenvironment, but not the hematopoietic cells, was altered in kd/kd. Furthermore, cell-type specific recovery of HIF-2alpha expression in endothelial cells (ECs) abrogated the anemic condition of the kd/kd mice, indicating that HIF-2alpha in EC plays an essential role in supporting erythropoiesis. In the absence of HIF-2alpha, the expression of vascular adhesion molecule-1 (VCAM-1) was reduced significantly and restoration of VCAM-1 expression in kd/kd ECs enhanced the development of erythroid progenitors. Finally, a chromatin immunoprecipitation assay and a reporter assay indicated that VCAM-1 gene transcription is directly regulated by HIF-2alpha. These data suggest that the hematopoietic microenvironment required for erythropoiesis is dynamically regulated by oxygen through the functions of HIF-2alpha in ECs.

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Crossref · 10.1182/blood-2007-11-122648

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  • Hypoxia promotes erythropoiesis by modulating erythroid progenitor maturation and proliferation.

    “It promotes erythropoiesis by modulating erythroid progenitor maturation and proliferation.”

    From Regulation of erythropoiesis by hypoxia-inducible factors (2013) · cites this paper as [225]

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  1. Gu YZ, Moran SM, Hogenesch JB, et al. Molecu- lar characterization and chromosomal localization of third ␣-class hypoxia inducible factor subunit, HIF-3␣. Gene Expr. 1998;7:205-213.

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Authors
Yamashita, T., Ohneda, O., Sakiyama, A., Iwata, F., Ohneda, K., & Fujii-Kuriyama, Y.
Affiliations
  • University of Tsukuba (JP)
  • Takasaki University of Health and Welfare (JP)
  • Center for TARA, University of Tsukuba, Tsukuba, Japan
Venue
Blood
Published
2008-08-15
Volume
112
Issue
4
Pages
1482-1492
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1984334691
Cited by
44
References
48
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 1 · 2019: 4 · 2018: 1 · 2017: 2 · 2016: 4 · 2015: 2 · 2014: 2 · 2013: 4 · 2012: 2
FWCI
2.61
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Science and Technology Agency
Topics
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
Keywords
erythropoiesis, HIF-2α, VCAM-1, endothelial cells, hematopoietic microenvironment, erythropoietin, hypoxia, normocytic anemia, erythroid progenitor cells, oxygen regulation, transcriptional regulation
MeSH terms
Endothelial PAS Domain-Containing Protein 1, Anemia, Animals, Erythropoiesis, Erythropoietin, Gene Expression Regulation, Oxygen, Transcription, Genetic, Mice, Knockout, Hematopoietic Stem Cell Transplantation, Vascular Cell Adhesion Molecule-1, Endothelial Cells, Mice, Basic Helix-Loop-Helix Proteins, Basic Helix-Loop-Helix Transcription Factors

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