Article ; Online: Enhanced antitumor activity of a novel, oral, helper epitope-containing WT1 protein vaccine in a model of murine leukemia.
2023 Volume 23, Issue 1, Page(s) 167
Abstract: Background: A Wilms' tumor 1 (WT1) oral vaccine, Bifidobacterium longum (B. longum) 420, in which the bacterium is used as a vector for WT1 protein, triggers immune responses through cellular immunity consisting of cytotoxic T lymphocytes (CTLs) and ... ...
Abstract | Background: A Wilms' tumor 1 (WT1) oral vaccine, Bifidobacterium longum (B. longum) 420, in which the bacterium is used as a vector for WT1 protein, triggers immune responses through cellular immunity consisting of cytotoxic T lymphocytes (CTLs) and other immunocompetent cells (e.g., helper T cells). We developed a novel, oral, helper epitope-containing WT1 protein vaccine (B. longum 2656) to examine whether or not B. longum 420/2656 combination further accelerates the CD4 Methods: C1498-murine WT1-a genetically-engineered, murine leukemia cell line to express murine WT1-was used as tumor cell. Female C57BL/6 J mice were allocated to the B. longum 420, 2656, and 420/2656 combination groups. The day of subcutaneous inoculation of tumor cells was considered as day 0, and successful engraftment was verified on day 7. The oral administration of the vaccine by gavage was initiated on day 8. Tumor volume, the frequency and phenotypes of WT1-specific CTLs in CD8 Results: Tumor volume was significantly smaller (p < 0.01) in the B. longum 420/2656 combination group than in the B. longum 420 group on day 24. WT1-specific CTL frequency in CD8 Conclusions: B. longum 420/2656 combination further accelerated antitumor activity that relies on WT1-specific CTLs in the tumor compared with B. longum 420. |
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MeSH term(s) | Female ; Animals ; Mice ; WT1 Proteins ; CD8-Positive T-Lymphocytes ; Epitopes ; Mice, Inbred C57BL ; T-Lymphocytes, Cytotoxic ; Wilms Tumor ; Interferon-gamma ; Cancer Vaccines ; Leukemia ; Kidney Neoplasms |
Chemical Substances | WT1 Proteins ; Epitopes ; Interferon-gamma (82115-62-6) ; Cancer Vaccines ; WT1 protein, mouse |
Language | English |
Publishing date | 2023-02-20 |
Publishing country | England |
Document type | Journal Article |
ZDB-ID | 2041352-X |
ISSN | 1471-2407 ; 1471-2407 |
ISSN (online) | 1471-2407 |
ISSN | 1471-2407 |
DOI | 10.1186/s12885-023-10547-5 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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