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1996-02-26
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Document 0179
DOCN M9620179
TI Both immunization with protein and recombinant vaccinia virus can
stimulate CTL specific for the E7 protein of human papilloma virus 16 in
H-2d mice.
DT 9602
AU Zhu X; Tommasino M; Vousden K; Sadovnikava E; Rappuoli R; Crawford L;
Kast M; Melief CJ; Beverley PC; Stauss HJ; MCR Tuberculosis and Related
Infections Unit, Royal Postgraduate; Medical School, Hammersmith
Hospital, London, UK.
SO Scand J Immunol. 1995 Nov;42(5):557-63. Unique Identifier : AIDSLINE
MED/96062122
AB The transforming protein E7 of human papilloma virus type 16 can
stimulate cytotoxic T lymphocytes (CTL) which can protect experimental
animals against growth of E7 expressing tumour cells. In this study we
compared CTL responses in mice immunized with either E7 protein in MF59
adjuvant or with recombinant vaccinia virus expressing E7 (Vac-E7). We
have chosen H-2d mice because no E7-specific CTL responses have been
described in this MHC haplotype. Immunization of these mice with Vac-E7
generated CTL which lysed target cells infected with Vac-E7 or
transfected with the E7 gene. CTL from mice immunized with E7 protein in
MF59 adjuvant showed specificity for the same target cells. Antibody
blocking experiments revealed that both immunization with Vac-E7 and E7
protein stimulated CD8+ effector CTL. The find specificity of CTL
induced by the two immunization protocols was similar. A major CTL
epitope was mapped to the carboxyl terminal amino acids 48-98 of the E7
protein. Peptide isolation from E7 expressing cells followed by HPLC
separation indicated that CTL induced by immunization with protein and
Vac-E7 recognized the same HPLC purified peptide fractions. Together,
the study suggests that vaccines based on protein can activate CTL with
similar fine specificity to CTL induced by vaccines based on recombinant
vaccinia virus.
DE Adjuvants, Immunologic Amino Acid Sequence Animal Cytotoxicity,
Immunologic CD8-Positive T-Lymphocytes/*IMMUNOLOGY Epitopes,
T-Lymphocyte/IMMUNOLOGY Mice Mice, Inbred BALB C Mice, Inbred DBA
Molecular Sequence Data Oncogene Proteins, Viral/*IMMUNOLOGY
Peptides/CHEMISTRY/IMMUNOLOGY T-Lymphocytes, Cytotoxic/*IMMUNOLOGY
Vaccines, Synthetic/*IMMUNOLOGY Vaccinia Virus Viral
Vaccines/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).