| Literature DB >> 25941607 |
Anders Aune Tveita1, Ole Audun Haabeth1, Bjarne Bogen2.
Abstract
T-cell recognition of tumor antigens presented on tumor-infiltrating macrophages (TAMs) induces a tumoricidal M1-like phenotype. Resultant indirect immune responses could eliminate not only antigen secreting (AgPOS), but also antigen negative (AgNEG) tumor cells via bystander killing. Such broad-spectrum response could eliminate antigenically heterogeneous tumors. Using an in vivo model of CD4+ T-cell mediated immunity against MHC II negative myeloma cells, bystander killing of AgNEG cells was ineffective due to strict spatial constraints of Th1-induced TAM cytotoxicity.Entities:
Keywords: ACT, Adoptive cell therapy; APC, Antigen-presenting cell; Ag, Antigen; CD4+ T cell response; IFN, Interferon gamma; Id, idiotype; LPS, Lipopolysaccharide; NK, Natural killer; SCID, Severe combined immunodeficiency; TAM, Tumor-associated macrophage; TCR-Tg, T-cell receptor transgenic; bystander killing; macrophage cytotoxicity; multiple myeloma
Year: 2014 PMID: 25941607 PMCID: PMC4292458 DOI: 10.4161/21624011.2014.954953
Source DB: PubMed Journal: Oncoimmunology ISSN: 2162-4011 Impact factor: 8.110