MHC Class II DRB genotyping is highly predictive of in-vitro alloreactivity in the common marmoset

Shilpanjali Jesudason, Ian Humphreys, Svjetlana Kireta, Robert Bruce Gilchrist, Peter Bardy, Graeme R. Russ, Patrick Toby Hewlett Coates

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The common marmoset (Callithrix jacchus) is emerging as a promising alternative pre-clinical model for transplantation and immunological research. It is therefore important to establish a rapid and reliable method of confirming alloreactivity between donor-recipient pairs. In this study of a large marmoset colony (n = 49), we firstly characterised MHC Class II genes (Caja-DRB*W1201, Caja-DRB1*03, Caja-DRB*W16) using, for the first time in this species, sequence-based allelic typing techniques. Exon 2 was amplified using M13-tailed PCR primers specific for known marmoset alleles, and sequenced using universal M13 sequencing primers and dye terminator cycle sequencing. Twenty-six genotypes involving monomorphic Caja-DRB*W1201, 8 Caja-DRB*W16 and 5 Caja-DRB1*03 alleles were observed. Two new DRB*W16 alleles were identified. Subsequently we investigated whether matching at MHC-DRB loci alone could accurately predict in-vitro alloreactivity as assessed by mixed lymphocyte reactions. Peripheral blood mononuclear cells (PBMC) isolated from fully and partially DRB-matched and fully mismatched animal pairs were mixed and co-cultured for T-cell proliferation. PBMC co-cultured from fully or partially mismatched pairs exhibited significant T cell proliferation above single cell controls (p < 0.01). Mixed PBMC from fully DRB-matched pairs exhibited no proliferation over controls (p = 0.3). Thus using Caja-DRB genotyping, suitably alloreactive donor-recipient pairs can be rapidly and accurately identified for use in further studies of cellular and solid organ transplantation.

Original languageEnglish
Pages (from-to)153-163
Number of pages11
JournalJournal of Immunological Methods
Volume314
Issue number1-2
DOIs
Publication statusPublished - 31 Jul 2006

Keywords

  • Chimerism
  • Common marmoset
  • Major histocompatibility complex
  • Mixed lymphocyte reaction
  • Non-human primate
  • Transplantation

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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