The Role of the Class II Transactivator (CIITA) in MHC Class I and II Regulation and Graft Rejection in Kidney

Tasha N. Sims, Marjan Afrouzian, Joan Urmson, Lin Fu Zhu, Philip F. Halloran

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Class II transactivator (CIITA) induces transcription of MHC class II genes, and induces class I in some cell lines. We examined the effect of CIITA deficiency on class I and II expression in mouse kidney. In CIITA knockout (CIITAKO) mice, basal class II was absent, but class I levels were mildly but significantly increased. Allogeneic stimulation or ischemic injury increased class I and II expression in kidneys of control (wild-type, WT) mice but induced only class I in CIITAKO mice. Thus, in kidney, all basal and induced class II expression was CIITA-dependent, but neither basal nor induced class I was CIITA-dependent. Rejecting kidney allografts from CIITAKO mice in CBA hosts manifested intense induction of donor class I but no donor class II expression. Rejecting kidneys from both WT and CIITAKO donors showed predominantly CD8 T-cell infiltration at days 7 and 21, with increasing tubulitis and arteritis at day 21. CIITAKO kidneys showed fewer infiltrating cells than WT kidneys at day 21. Thus CIITA-deficient kidneys have no basal and induced class II expression but display intense induction of class I expression, and evoke typical rejection lesions, although some indices of infiltration are reduced at day 21.

Original languageEnglish (US)
Pages (from-to)211-221
Number of pages11
JournalAmerican Journal of Transplantation
Volume1
Issue number3
DOIs
StatePublished - Sep 2001
Externally publishedYes

Fingerprint

Graft Rejection
Kidney
Knockout Mice
Arteritis
MHC Class II Genes
MHC class II transactivator protein
Allografts
T-Lymphocytes
Cell Line
Wounds and Injuries

Keywords

  • Antigen presentation
  • Banff schema
  • CIITA
  • Graft rejection
  • MHC regulation

ASJC Scopus subject areas

  • Immunology

Cite this

The Role of the Class II Transactivator (CIITA) in MHC Class I and II Regulation and Graft Rejection in Kidney. / Sims, Tasha N.; Afrouzian, Marjan; Urmson, Joan; Zhu, Lin Fu; Halloran, Philip F.

In: American Journal of Transplantation, Vol. 1, No. 3, 09.2001, p. 211-221.

Research output: Contribution to journalArticle

Sims, Tasha N. ; Afrouzian, Marjan ; Urmson, Joan ; Zhu, Lin Fu ; Halloran, Philip F. / The Role of the Class II Transactivator (CIITA) in MHC Class I and II Regulation and Graft Rejection in Kidney. In: American Journal of Transplantation. 2001 ; Vol. 1, No. 3. pp. 211-221.
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