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1988 ; 79
(12
): 1340-8
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Establishment of a human monoclonal antibody to Hanganutziu-Deicher antigen as a
tumor-associated carbohydrate antigen
#MMPMID3148605
Usuba O
; Fujii Y
; Miyoshi I
; Naiki M
; Sendo F
Jpn J Cancer Res
1988[Dec]; 79
(12
): 1340-8
PMID3148605
show ga
We have established a human-human hybridoma producing a monoclonal antibody
against a tumor-associated carbohydrate-specific antigen, Hanganutziu-Deicher
(HD) antigen. Human spleen lymphocytes from a patient with esophageal varices
complicated with liver cirrhosis were cultured in serum-free medium and
co-stimulated with both anti-human mu-chain antibodies and supernatants of
concanavalin A-stimulated human spleen cell culture (ConA sup). The activated
lymphocytes were subsequently primed in vitro with particulate HD3 antigen and
fused with a parent hybrid myeloma cell line, KR-12. A hybridoma, 1F43E31G7
produced anti-HD human monoclonal antibody (IgM lambda). This monoclonal antibody
reacted strongly with N-glycolylneuraminyl alpha 2-3 lactosylceramide (HD3) and
slightly with N-glycolylneuraminyl alpha 2-3 lactoneotetraosylceramide (HD5), but
did not react with N-glycolylneuraminyl alpha 2-3 lactoneohexaosylceramide (HD7),
N-acetylneuraminyl alpha 2-3 lactosylceramide (GM3) and other derivatives of HD3
prepared by chemical modification of the sialic acid residue of HD3, which
indicates that the monoclonal antibody is directed precisely toward the terminal
sialic acid and whole structure of HD3.