Independent mutations of the human CD3-epsilon gene resulting in a T cell receptor/CD3 complex immunodeficiency.
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Soudais C, de Villartay JP, Le Deist F, Fischer A, Lisowska-Grospierre B
Independent mutations of the human CD3-epsilon gene resulting in a T cell receptor/CD3 complex immunodeficiency.
Nat Genet. 1993 Jan;3(1):77-81.
- PubMed ID
- 8490660 [ View in PubMed]
- Abstract
The T-cell receptor (TCR) is composed of two glycoproteins (alpha and beta or gamma and delta) associated with four invariant polypeptides (CD3-gamma, delta, epsilon and zeta). The majority of TCR/CD3 complexes contain six polypeptide chains, and although there is some flexibility in the complex subunit stoichiometry the CD3-epsilon chain is central to CD3 core assembly and full complex formation. We have described previously defective expression of the TCR/CD3 complex in an immunodeficient child. We now report that two independent CD3-epsilon gene mutations present in the parents have segregated in the patient, leading to defective CD3-epsilon chain synthesis and preventing normal association and membrane expression of the TCR/CD3 complex.