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. 1994 Aug;24(8):1823-7.
doi: 10.1002/eji.1830240815.

Human RANTES induces the migration of human T lymphocytes into the peripheral tissues of mice with severe combined immune deficiency

W J Murphy  1 , D D Taub, M Anver, K Conlon, J J Oppenheim, D J Kelvin, D L Longo
Affiliations

Human RANTES induces the migration of human T lymphocytes into the peripheral tissues of mice with severe combined immune deficiency

W J Murphy et al. Eur J Immunol. 1994 Aug.

Abstract

The human cytokine, Recombinant Human Regulated on Activation, Normal T Expressed and Secreted (rhRANTES), is a small glycoprotein secreted by activated T cells and platelets and is structurally related to a family of chemotactic cytokines called chemokines. Evaluation of the effects of chemokines on human cells has largely been limited to in vitro binding assays. In an effort to study the in vivo effects of chemokines on human leukocyte migration, we examined the ability of rhRANTES to induce human T cell infiltration using a human/severe combined immune deficient (SCID) mouse model. SCID mice received human peripheral blood lymphocytes, followed by sequential subcutaneous injections of rhRANTES in the hind flank for 3 days. The skin and underlying tissue from the rhRANTES injection site were then biopsied and examined for the extent of human mononuclear cell infiltration. rhRANTES induced significant mononuclear cell accumulation 72 h after injection. Immunohistological evaluation determined that the majority of the cells recruited in response to rhRANTES injections were human CD3+ T cells with equal numbers of CD4+ and CD8+ cells. In contrast, subcutaneous injections of recombinant human macrophage colony-stimulating factors resulted in little human cellular infiltration. Murine mononuclear cell infiltration in response to rhRANTES was also present suggesting that the in vivo effects of rhRANTES may be both direct and indirect. These results demonstrate that rhRANTES induces significant human T cell migration in vivo and suggests that the human/SCID mouse model may provide an important tool in studying the in vivo effects of chemokines on human leukocytes and leukocyte subsets.

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