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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2017 ; 7
(1
): 9923
Nephropedia Template TP
gab.com Text
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English Wikipedia
TCR-like antibodies mediate complement and antibody-dependent cellular
cytotoxicity against Epstein-Barr virus-transformed B lymphoblastoid cells
expressing different HLA-A*02 microvariants
#MMPMID28855662
Lai J
; Choo JAL
; Tan WJ
; Too CT
; Oo MZ
; Suter MA
; Mustafa FB
; Srinivasan N
; Chan CEZ
; Lim AGX
; Zhong Y
; Chan SH
; Hanson BJ
; Gascoigne NRJ
; MacAry PA
Sci Rep
2017[Aug]; 7
(1
): 9923
PMID28855662
show ga
Epstein-Barr virus (EBV) is a common gammaherpesvirus associated with various
human malignancies. Antibodies with T cell receptor-like specificities (TCR-like
mAbs) provide a means to target intracellular tumor- or virus-associated antigens
by recognising their processed peptides presented on major histocompatibility
complex (MHC) class I (pMHC) complexes. These antibodies are however thought to
be relevant only for a single HLA allele. Here, we show that
HLA-A*02:01-restricted EBV antigenic peptides EBNA1(562-570), LMP1(125-133) and
LMP2A(426-434) display binding degeneracy towards HLA-A*02 allelic microvariants,
and that these pMHC complexes are recognised by anti-EBV TCR-like mAbs E1, L1 and
L2 raised in the context of HLA-A*02:01. These antibodies bound endogenously
derived pMHC targets on EBV-transformed human B lymphoblastoid cell lines
expressing A*02:01, A*02:03, A*02:06 and A*02:07 alleles. More importantly, these
TCR-like mAbs mediated both complement-dependent and antibody-dependent cellular
cytotoxicity of these cell lines in vitro. This finding suggests the utility of
TCR-like mAbs against target cells of closely related HLA subtypes, and the
potential applicability of similar reagents within populations of diverse
HLA-A*02 alleles.