Stabilins are expressed in bone marrow sinusoidal endothelial cells and mediate scavenging and cell adhesive functions.

Research output: Contribution to journalArticle

Abstract

Bone marrow sinusoidal endothelial cells have a specific function as a site of transmigration of hematopoietic stem and progenitor cells and mature blood cells between bone marrow and blood stream. However, the specific characteristics of bone marrow sinusoidal endothelial cells are still largely unclear. We here report that these cells express stabilin-1 and stabilin-2, which in liver sinusoidal endothelial cells have been identified as endocytic scavenger receptors for several ligands, including SPARC and hyaluronan. We show here that intravenously injected formaldehyde-treated serum albumin, advanced glycation end-products, and collagen I alpha-chains were taken up by bone marrow sinusoidal endothelial cells, showing that these cells have a scavenging function and thereby may modulate bone marrow vascular stem cell niches. Importantly, we show hyaluronan mediated adhesion of hematopoietic stem and progenitor cells to stabilin-2-transfected cells, suggesting that stabilin-2 contributes to adhesion and homing of circulating stem and progenitor cells to bone marrow.

Details

Authors
  • Hong Qian
  • Sophie Johansson
  • Peter McCourt
  • Bård Smedsrød
  • Marja Ekblom
  • Staffan Johansson
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Biological Sciences
Original languageEnglish
Pages (from-to)883-886
JournalBiochemical and Biophysical Research Communications
Volume390
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: The Vårdal Institute (016540000), Hematopoietic Stem Cell Laboratory (013022012)

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