Immune-mediated bone marrow failure in C57BL/6 mice.

Abstract

We established a model of immune-mediated bone marrow (BM) failure in C57BL/6 (B6) mice with 6.5 G total-body irradiation followed by the infusion of 4-10 × 10(6) lymph node (LN) cells/recipient from Friend leukemia virus B/N (FVB) donors. Forty-three percent of animals succumbed, with surviving animals showing marked declines in blood neutrophils, red blood cells, platelets and total BM cells at 8 to 14 days following LN cell infusion. Lowering the total-body irradiation dose to 5 G or altering the LN source from FVB to BALB/cBy donors failed to produce BM destruction. Affected animals showed significant expansion and activation of CD8 T lymphocytes in both the blood and BM; cytotoxic T cells had elevated Fas ligand expression and were oligoclonal, mainly displaying Vβ7 and Vβ17 T cell receptors. There were significant increases in blood plasma interferon γ and tissue necrosis factor α in affected animals. Chemokine ligands CCL3, CCL4, CCL5, CCL20, CXCL2, and CXCL5 and hematopoietic growth factors G-CSF, M-CSF, GM-CSF, VEGF were also elevated. In B6 mice carrying a Fas gene mutation, BM failure was attenuated when they were infused with FVB LN cells. Our model establishes a useful platform to define the roles of individual genes and their products in immune-mediated BM failure.

• Authors: Jichun Chen, Marie J Desierto, Xingmin Feng, Angélique Biancotto, Neal S Young
• Journal: Experimental hematology (Exp Hematol) Vol. 43 Issue 4 Pg. 256-67 (Apr 2015) ISSN: 1873-2399 [Electronic] Netherlands
• PMID: 25555453 (Publication Type: Journal Article, Research Support, N.I.H., Intramural)
• Copyright: Published by Elsevier Inc.

Chemical References

• Fas Ligand Protein
• fas Receptor

Topics

• Animals
• Apoptosis
• Bone Marrow (immunology, pathology, radiation effects)
• Fas Ligand Protein (metabolism)
• Lymphocyte Activation
• Mice
• Mice, Inbred BALB C
• Mice, Inbred C57BL
• T-Lymphocytes (immunology)
• Whole-Body Irradiation
• fas Receptor (metabolism)