Regression of human kidney cancer following allogeneic stem cell transplantation is associated with recognition of an HERV-E antigen by T cells

Yoshiyuki Takahashi, Nanae Harashima, Sachiko Kajigaya, Hisayuki Yokoyama, Elena Cherkasova, J. Philip McCoy, Ken Ichi Hanada, Othon Mena, Roger Kurlander, Tawab Abdul, Ramaprasad Srinivasan, Andreas Lundqvist, Elizabeth Malinzak, Nancy Geller, Michael I. Lerman, Richard W. Childs

Research output: Contribution to journalArticlepeer-review

122 Citations (Scopus)

Abstract

Transplanted donor lymphocytes infused during hematopoietic stem cell transplantation (HSCT) have been shown to cure patients with hematological malignancies. However, less is known about the effects of HSCT on metastatic solid tumors. Thus, a better understanding of the immune cells and their target antigens that mediate tumor regression is urgently needed to develop more effective HSCT approaches for solid tumors. Here we report regression of metastatic renal cell carcinoma (RCC) in patients following nonmyeloablative HSCT consistent with a graft-versus-tumor effect. We detected RCC-reactive donor-derived CD8+ T cells in the blood of patients following nonmyeloablative HSCT. Using cDNA expression cloning, we identified a 10-mer peptide (CT-RCC-1) as a target antigen of RCC-specific CD8+ T cells. The genes encoding this antigen were found to be derived from human endogenous retrovirus (HERV) type E and were expressed in RCC cell lines and fresh RCC tissue but not in normal kidney or other tissues. We believe this to be the first solid tumor antigen identified using allogeneic T cells from a patient undergoing HSCT. These data suggest that HERV-E is activated in RCC and that it encodes an overexpressed immunogenic antigen, therefore providing a potential target for cellular immunity.

Original languageEnglish
Pages (from-to)1099-1109
Number of pages11
JournalJournal of Clinical Investigation
Volume118
Issue number3
DOIs
Publication statusPublished - 2008 Mar

ASJC Scopus subject areas

  • Medicine(all)

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