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M9620006.TXT
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1996-02-26
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Document 0006
DOCN M9620006
TI Receptor-linked antigen delivery system. Importance of autologous alpha
2-macroglobulin in the development of peptide vaccine.
DT 9602
AU Mitsuda S; Nakagawa T; Nakazato H; Ikai A; Department of Biological
Sciences, Faculty of Bioscience and; Biotechnology, Tokyo Institute of
Technology, Yokohama, Japan.
SO Biochem Biophys Res Commun. 1995 Nov 2;216(1):399-405. Unique Identifier
: AIDSLINE MED/96067578
AB We have hijacked a process of the receptor-mediated endocytosis to
transport peptide antigens into antigen presenting cells (APCs) for the
purpose of increasing the level of antigen presentation (named
Receptor-Linked Antigen Delivery System (R-LADS)). By coupling an
endogenous plasma proteinase inhibitor alpha 2-macroglobulin (alpha 2M)
to a synthetic peptide having a partial sequence of HIV-1 envelope
protein, alpha 2M was made to carry the peptide into APCs as a part of
the normal alpha 2M cycle, which resulted in an increased production of
specific antibodies against the peptide (Mitsuda, S., Nakagawa, T.,
Osada, T., Shimamoto, T., Nakazato, H. and Ikai, A. (1993) Biochem.
Biophys. Res. Commun. 194, 1155-1160). We demonstrate here that this
procedure becomes a more efficient tool for antibody production when
autologous transporter protein was used. By using murine alpha 2M (m
alpha 2M) instead of heterologous human alpha 2M (h alpha 2M) when mice
were experimental animals, we were able to dramatically enhance the
production level of anti-HIV-1 peptide antibodies and shorten the period
which is needed for antibody production. We aim to develop effective
peptide vaccines by further improving this system.
DE alpha-Macroglobulins/*IMMUNOLOGY Animal Antigen-Presenting
Cells/*IMMUNOLOGY/METABOLISM AIDS Vaccines/*ADMINISTRATION & DOSAGE
Electrophoresis, Polyacrylamide Gel *Endocytosis Female Gene
Products, env/ADMINISTRATION & DOSAGE/*IMMUNOLOGY Human HIV
Antibodies/*BIOSYNTHESIS HIV-1/*IMMUNOLOGY Mice Mice, Inbred BALB C
Receptors, Immunologic/*PHYSIOLOGY *Vaccines Vaccines,
Synthetic/*ADMINISTRATION & DOSAGE 3T3 Cells JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).