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Neutralization of Chlamydia psittaci with Monoclonal Antibodies
Author(s) -
Ando Shuji,
Takashima Ikuo,
Hashimoto Nobuo
Publication year - 1993
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1993.tb01701.x
Subject(s) - neutralization , monoclonal antibody , epitope , chlamydia psittaci , biology , virology , bacterial outer membrane , antibody , infectivity , microbiology and biotechnology , virus , chlamydia , escherichia coli , biochemistry , immunology , gene
Neutralization of Chlamydia ( C. ) psittaci avian strain P‐1041 was examined in vitro using monoclonal antibodies (MAbs). Of the 10 MAbs used, 6 were found to exhibit neutralizing capability. These include 3 against major outer membrane protein (MOMP), 1 against lipopolysaccharide (LPS) and 2 against other protein molecules [90 kilodalton (kDa) and 90/50 kDa]. Most neutralizing MAbs were dependent on complement for efficient neutralization, while a strain‐specific MAb (2B5) against the 90 kDa protein displayed a different requirement for complement and neutralized the infectivity of the P‐1041 at high concentrations without complement. By competitive inhibition enzyme‐linked immunosorbent assay (competitive inhibition ELISA), all 3 neutralizing anti‐MOMP MAbs were demonstrated to recognize different epitopes found in very close proximity to each other on the outer membrane.