A class II-restricted cytotoxic T-cell clone recognizes a human minor histocompatibility antigen with a restricted tissue distribution

Br J Haematol. 2005 Jan;128(1):73-81. doi: 10.1111/j.1365-2141.2004.05283.x.


Following a human leucocyte antigen (HLA)-identical allogeneic stem cell transplantation (allo-SCT), minor histocompatibility antigens (mHags) play an important role in the induction of graft-versus-leukaemia (GvL) and graft-versus-myeloma (GvM). Many mHags show ubiquitous tissue expression and are associated with GvL and graft-versus-host disease. Here we describe a cytotoxic CD4(+) T lymphocyte line and a cytotoxic, CD4(+) T cell clone (CTC), 3AB11, which recognized a tissue-restricted mHag. This CTC was isolated from a multiple myeloma patient with clinical GvM following an HLA-matched allo-SCT. CTC 3AB11 was activated in a HLA-DP*0401 restricted fashion and the antigen was expressed by 27% of HLA-DP*0401 positive Epstein-Barr virus (EBV)-transformed B-cell lines (EBV-B). Tissue distribution analysis of antigen 3AB11 showed it to be expressed by patient-derived EBV-transformed B cell lines (EBVp), the myeloma plasma cell-line UM9 and monocytes. It was weakly expressed by peripheral blood-derived phytohaemagglutinin-induced T-cell blasts and absent on CD40L stimulated peripheral B (CD40L B) cells and stromal cells. The relatively high prevalence of the HLA class II-restricted 3AB11 antigen, together with its apparent haematopoietic-restricted expression, makes it an antigen of interest for cellular immunotherapy.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • B-Lymphocytes / immunology
  • B-Lymphocytes / virology
  • CD4-Positive T-Lymphocytes / immunology*
  • Cell Line, Transformed
  • Clone Cells
  • Graft vs Tumor Effect
  • Herpesvirus 4, Human
  • Histocompatibility Antigens Class II*
  • Humans
  • Male
  • Middle Aged
  • Minor Histocompatibility Antigens* / analysis
  • Multiple Myeloma / immunology*
  • Plasma Cells / immunology
  • Transplantation, Homologous
  • Virus Activation


  • Histocompatibility Antigens Class II
  • Minor Histocompatibility Antigens