Recombinant human growth hormone promotes human lymphocyte engraftment in immunodeficient mice and results in an increased incidence of human Epstein Barr virus-induced B-cell lymphoma

William J Murphy, S. K. Durum, M. Anver, M. Frazier, D. L. Longo

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

Recombinant human growth hormone (rhGH) previously has been demonstrated to promote human or mouse T-cell engraftment in immunodeficient mice. We then wanted to examine long-term effects of rhGH on human cell engraftment in these mice. Mice with severe combined immune deficiency (SCID) were given human peripheral blood lymphocytes or human bone marrow cells and daily injections of rhGH (20 μg ip every other day). Upon later assessment for engraftment by flow cytometric analysis, it was determined that rhGH strongly promoted human T-cell engraftment in the thymus and spleens of these mice. However, there was considerable variability in both the incidence and extent of engraftment which appears to be due to donor-to-donor variation. Additionally, rhGH promoted B lymphomagenesis in these mice since long-term treatment of these xenogeneic chimeras with rhGH resulted in the increased incidence of human Epstein-Barr virus (EBV)-infected B-cell lymphoma. Thus, while rhGH can be used to optimize human T-cell engraftment in SCID mice, it also increases the likelihood of B-cell lymphoma generation when the donor is EBV infected. The results suggest that the activation of human T cells by rhGH results in an increased ability of these cells to traffic to the peripheral lymphoid organs of the SCID mice and results in a lymphoid microenvironment conductive to the outgrowth of EBV-transformed B lymphocytes.

Original languageEnglish (US)
Pages (from-to)355-364
Number of pages10
JournalBrain Behavior and Immunity
Volume6
Issue number4
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Immunology
  • Behavioral Neuroscience
  • Endocrine and Autonomic Systems

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