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Related Experiment Videos

Human-->mouse radiation chimera do not develop Epstein-Barr virus lymphoma

H Marcus1, T Burakova, E Shezen

  • 1Department of Membrane Research and Biophysics, Weizmann Institute of Science, Rehovot, Israel.

Immunology Letters
|March 1, 1996
PubMed
Summary

Engrafting human peripheral blood lymphocytes (PBL) into radiation-conditioned normal mice prevents Epstein-Barr virus (EBV) lymphoma, unlike in SCID mice. This finding opens new avenues for transplanting EBV-positive hematopoietic cells.

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Area of Science:

  • Immunology
  • Oncology
  • Virology

Background:

  • Engraftment of human peripheral blood lymphocytes (PBL) in C.B-17/SCID mice leads to a high incidence of Epstein-Barr virus (EBV)-associated B cell tumors.
  • A novel method allows human PBL engraftment in normal mice and rats using radiation and SCID bone marrow radioprotection.

Purpose of the Study:

  • To investigate EBV lymphoma development in normal mice engrafted with human PBL compared to SCID mice.
  • To evaluate the potential for transplanting hematopoietic cells from EBV-positive donors.

Main Methods:

  • Human PBL were engrafted into Balb/c and C3H/HeJ mice (normal strains) and C.B-17/SCID mice.
  • Normal mice received lethal split-dose radiation and SCID bone marrow for radioprotection.
  • Immunohistochemical analysis was used to characterize tumor cells and EBV markers.

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Main Results:

  • Balb/c and C3H/HeJ mice showed no EBV lymphoma development over 7 months, with successful B and T cell engraftment.
  • In contrast, 90% of C.B-17/SCID mice developed lymphoma after receiving human PBL.
  • 36% of beige/nude/xid (BNX) mice also developed lymphoma under similar conditions.

Conclusions:

  • Normal mice conditioned with radiation and SCID bone marrow are resistant to EBV lymphoma outgrowth, unlike SCID or BNX mice.
  • This resistance mechanism in human PBL engrafted mice warrants further investigation.
  • The findings suggest a promising approach for hematopoietic stem cell transplantation from EBV-positive donors.