BACKGROUND: Transplantation of human kidney tissue under the kidney capsule of immunodeficient animals (severe combined immunodeficiency [SCID]/Lewis and SCID/nude chimeric rats), and the subsequent intraperitoneal infusion of allogeneic human peripheral blood mononuclear cells (PBMC), results in a rapid and consistent human renal allograft rejection. We investigated the consequences of grafting human fetal kidney fragments instead of the adult tissue. METHODS: The development of human fetal kidney tissue and its interaction with allogeneic human PBMC in chimeric rats were analyzed by histology, immunohistochemistry, and in situ hybridization. RESULTS: We report successful establishment of human fetal kidney to SCID/Lewis and SCID/nude chimeric rats. The intrarenal human fetal renal implants displayed rapid growth and maintained numerous developing glomeruli and tubular structures up to 4 months after transplantation. In contrast to the adult human kidney, infusion of allogeneic human PBMC resulted in either minimal human T-cell infiltration or abundant nonrejecting T-cell infiltrates, characterized by a reduced number of T cells of the CD45RO+ or HLA-DR+ subsets, both leading to less tissue destruction as well as to continued growth of the human fetal renal tissue. This observation was found to be related to the reduced protein expression of tissue HLA class I and II, intercellular adhesion molecule 1, and vascular adhesion molecule 1 in the fetal grafts compared with the adult grafts. Lack of tissue expression of Fas ligand in the fetal grafts suggests that the latter does not contribute to the delayed rejection of human fetal kidneys. CONCLUSIONS: Our model should be useful for the study of human fetal renal development and the human alloresponse against fetal tissue.
BACKGROUND: Transplantation of human kidney tissue under the kidney capsule of immunodeficient animals (severe combined immunodeficiency [SCID]/Lewis and SCID/nude chimeric rats), and the subsequent intraperitoneal infusion of allogeneic human peripheral blood mononuclear cells (PBMC), results in a rapid and consistent human renal allograft rejection. We investigated the consequences of grafting human fetal kidney fragments instead of the adult tissue. METHODS: The development of human fetal kidney tissue and its interaction with allogeneic human PBMC in chimeric rats were analyzed by histology, immunohistochemistry, and in situ hybridization. RESULTS: We report successful establishment of human fetal kidney to SCID/Lewis and SCID/nude chimeric rats. The intrarenal human fetal renal implants displayed rapid growth and maintained numerous developing glomeruli and tubular structures up to 4 months after transplantation. In contrast to the adult human kidney, infusion of allogeneic human PBMC resulted in either minimal human T-cell infiltration or abundant nonrejecting T-cell infiltrates, characterized by a reduced number of T cells of the CD45RO+ or HLA-DR+ subsets, both leading to less tissue destruction as well as to continued growth of the human fetal renal tissue. This observation was found to be related to the reduced protein expression of tissue HLA class I and II, intercellular adhesion molecule 1, and vascular adhesion molecule 1 in the fetal grafts compared with the adult grafts. Lack of tissue expression of Fas ligand in the fetal grafts suggests that the latter does not contribute to the delayed rejection of human fetal kidneys. CONCLUSIONS: Our model should be useful for the study of human fetal renal development and the human alloresponse against fetal tissue.
Authors: Smadar Eventov-Friedman; Helena Katchman; Elias Shezen; Anna Aronovich; Dalit Tchorsh; Benjamin Dekel; Enrique Freud; Yair Reisner Journal: Proc Natl Acad Sci U S A Date: 2005-02-14 Impact factor: 11.205
Authors: Anna Aronovich; Dalit Tchorsh; Helena Katchman; Smadar Eventov-Friedman; Elias Shezen; Uri Martinowitz; Bruce R Blazar; Sivan Cohen; Orna Tal; Yair Reisner Journal: Proc Natl Acad Sci U S A Date: 2006-12-05 Impact factor: 11.205
Authors: Gil Hecht; Smadar Eventov-Friedman; Chava Rosen; Elias Shezen; Dalit Tchorsh; Anna Aronovich; Enrique Freud; Hana Golan; Ronit El-Hasid; Helena Katchman; Bernhard J Hering; Amnon Zung; Zipi Kra-Oz; Pninit Shaked-Mishan; Alex Yusim; Alex Shtabsky; Pavel Idelevitch; Ana Tobar; Alon Harmelin; Esther Bachar-Lustig; Yair Reisner Journal: Proc Natl Acad Sci U S A Date: 2009-05-11 Impact factor: 11.205
Authors: B Dekel; H Marcus; B Shenkman; A Shimoni; Y Shechter; A Canaan; A Berrebi; D Varon; Y Reisner Journal: Immunology Date: 1998-07 Impact factor: 7.397