T-cell receptor analysis in Omenn's syndrome

Evidence for defects in gene rearrangement and assembly

Edward G. Brooks, Alexandra H. Filipovich, John W. Padgett, Robert Mamlock, Randall M. Goldblum

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Patients with Omenn's syndrome have a form of severe immune deficiency that is associated with pathological features of graft-versus-host disease, except for the lack of foreign engraftment. It has been hypothesized that the disease's unique clinical features are mediated by an expanded population of autologous self-reactive T cells of limited clonality. In the current study, an investigation of the T-cell receptor (TCR) repertoire was undertaken to identify defects in T-cell rearrangement and development. The TCR repertoire in this group of patients was exquisitely restricted in the number of different TCR clonotypes, and some of these clonotypes seemed to have similar recognition motifs in the antigen-binding region, indicating antigen-driven proliferation of T lymphocytes. The TCRs from some patients lacked N- or P- nucleotide insertions and used proximal variable and joining gene segments, suggesting abnormal intrathymic T-cell development. Finally, abnormal assembly of gene segments and truncated rearrangements within nonproductive alleles suggested abnormalities in TCR rearrangement mechanisms. Overall, the findings suggest that inefficient and/or abnormal generation of TCRs may be a consistent feature of this disease.

Original languageEnglish (US)
Pages (from-to)242-250
Number of pages9
JournalBlood
Volume93
Issue number1
StatePublished - Jan 1 1999
Externally publishedYes

Fingerprint

Severe Combined Immunodeficiency
T-cells
Gene Rearrangement
T-Cell Antigen Receptor
Genes
T-Lymphocytes
Defects
Antigens
Graft vs Host Disease
Grafts
Joining
Nucleotides
Alleles
Population

ASJC Scopus subject areas

  • Hematology

Cite this

Brooks, E. G., Filipovich, A. H., Padgett, J. W., Mamlock, R., & Goldblum, R. M. (1999). T-cell receptor analysis in Omenn's syndrome: Evidence for defects in gene rearrangement and assembly. Blood, 93(1), 242-250.

T-cell receptor analysis in Omenn's syndrome : Evidence for defects in gene rearrangement and assembly. / Brooks, Edward G.; Filipovich, Alexandra H.; Padgett, John W.; Mamlock, Robert; Goldblum, Randall M.

In: Blood, Vol. 93, No. 1, 01.01.1999, p. 242-250.

Research output: Contribution to journalArticle

Brooks, EG, Filipovich, AH, Padgett, JW, Mamlock, R & Goldblum, RM 1999, 'T-cell receptor analysis in Omenn's syndrome: Evidence for defects in gene rearrangement and assembly', Blood, vol. 93, no. 1, pp. 242-250.
Brooks EG, Filipovich AH, Padgett JW, Mamlock R, Goldblum RM. T-cell receptor analysis in Omenn's syndrome: Evidence for defects in gene rearrangement and assembly. Blood. 1999 Jan 1;93(1):242-250.
Brooks, Edward G. ; Filipovich, Alexandra H. ; Padgett, John W. ; Mamlock, Robert ; Goldblum, Randall M. / T-cell receptor analysis in Omenn's syndrome : Evidence for defects in gene rearrangement and assembly. In: Blood. 1999 ; Vol. 93, No. 1. pp. 242-250.
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