Numbers of long-term hematopoietic stem cells from bone marrow of fanca and fancc knockout mice can be greatly enhanced by their collection and processing in physioxia conditions

Blood Cells Mol Dis. 2021 Feb:86:102492. doi: 10.1016/j.bcmd.2020.102492. Epub 2020 Aug 28.

Abstract

Fanconi anemia (FA) is associated with bone marrow failure. Bone marrow (BM) from patients with FA and fanca-/- and fancc-/- mice are deficient in hematopoietic stem (HSCs) and progenitor cells (HPCs). Decreased HSCs/HPCs compromise their use in human and mouse hematopoietic cell transplantation (HCT) and gene therapy to correct genetic defects causing FA. We reported increased collection of HSCs from mouse bone marrow and mobilized peripheral blood, and human cord blood of normal donors after collection/processing in low (3%) oxygen (physioxia). We assessed comparative contents of long-term (LT)-HSCs from BM of fanca-/- and fancc-/- when collected/processed at 3% O2, in order to negate effects of extra physiological shock stress (EPHOSS) induced by collection/processing in ambient air. Collection/processing of BM from fanca-/- and fancc-/- mice in physioxia demonstrated a ≥3-fold increase in LT-HSCs compared to that in ambient air. This was associated with decreased phenotypic multipotential progenitor cells and functional granulocyte macrophage, erythroid, and multi-potential progenitors, results similar to that for BM from normal donor mice. Increased collection of HSCs could have clinical applicability for gene therapy and HCT.

Keywords: Hematopoietic stem and progenitor cells; Physioxia (lowered O(2) tension); fanca(−/−) mice; fancc(−/−) mice.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Bone Marrow Cells / cytology*
  • Bone Marrow Cells / metabolism
  • Bone Marrow Cells / pathology
  • Cell Count
  • Cell Hypoxia
  • Cell Separation
  • Cells, Cultured
  • Fanconi Anemia / genetics
  • Fanconi Anemia / pathology
  • Fanconi Anemia Complementation Group A Protein / genetics*
  • Fanconi Anemia Complementation Group C Protein / genetics*
  • Hematopoietic Stem Cells / cytology*
  • Hematopoietic Stem Cells / metabolism
  • Hematopoietic Stem Cells / pathology
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout

Substances

  • Fanca protein, mouse
  • Fancc protein, mouse
  • Fanconi Anemia Complementation Group A Protein
  • Fanconi Anemia Complementation Group C Protein