Engraftment of canine peripheral blood lymphocytes into nonobese diabetic-severe combined immune deficient IL-2R common gamma chain null mice

Academic Article

Abstract

  • To study the canine immune system we generated a mouse model engrafted with canine lymphocytes using NOD SCID IL2R common gamma chain -/- (NSG) mice as recipients (Ca-PBL-SCID). Engraftment of canine peripheral blood lymphocytes (PBLs) was determined post-injection with 10 peripheral blood mononuclear cells (PBMCs) into irradiated NSG mice using flow cytometry and fluorescently labeled antibodies specific to canine helper T cells (CD45 CD4 ), cytotoxic lymphocytes (CD45 CD8 ), regulatory T cells (CD45 CD4 Foxp3 ), and B cells (CD45 Ig CD21 ). Canine CD45 lymphocytes were detectable as early as day 1 in the peritoneal cavity, and beginning at 9 days in the blood, bone marrow, and spleen. CD4 T cells, of which Foxp-3 CD25 cells constituted a minor percentage, were the predominant lymphocyte population at 9 days post engraftment contrasting with increasing proportions of CD8 CTL's and Ig B cells beginning at 16 days. Canine immunoglobulin was initially detected in the serum of Ca-PBL-SCID mice at 9 days post-engraftment and peaked in concentration at day 36. From day 28 to 52 post-engraftment 30% of the Ca-PBL-SCID mice became markedly anemic and thrombocytopenic, yet gross and histopathologic examination of bone marrow, kidneys, spleen, liver, and intestine revealed no obvious lesions. Blood smear evaluation revealed agglutination of mature red blood cells, reticulocytes and a regenerative anemia. These findings demonstrate that NSG mice are capable of engraftment of canine PBLs yet develop graft versus host disease similar to Hu-PBL-SCID mice. © 2013 Elsevier B.V. 7 + + + + + + + + + + + + + + lo hi
  • Authors

    Digital Object Identifier (doi)

    Pubmed Id

  • 1729630
  • Author List

  • Foote JB; Kabir FML; Graff EC; Cattley RC; DeInnocentes P; Smith BF; Bird RC
  • Start Page

  • 131
  • End Page

  • 141
  • Volume

  • 157
  • Issue

  • 3-4