Title
RIPK3 and Caspase-1/11 Are Necessary for Optimal Antigen-Specific CD8 T Cell Response Elicited by Genetically Modified Listeria monocytogenes
Date Issued
09 April 2020
Access level
open access
Resource Type
journal article
Author(s)
Rana A.
de Almeida F.C.
Paico Montero H.A.
Bortoluci K.R.
Sad S.
Amarante-Mendes G.P.
Universidade de São Paulo
Publisher(s)
Frontiers Media S.A.
Abstract
Efficient induction of effector and long-term protective antigen-specific CD8+ T memory response by vaccination is essential to eliminate malignant and pathogen-infected cells. Intracellular infectious bacteria, including Listeria monocytogenes, have been considered potent vectors to carry multiple therapeutic proteins and generate antigen-specific CD8+ T cell responses. Although the role of molecules involved in inflammatory cell death pathways, such as necroptosis (RIPK3-mediated) and pyroptosis (Caspase-1/11-mediated), as effectors of immune response against intracellular bacteria are relatively well understood, their contribution to the adjuvant effect of recombinant bacterial vectors in the context of antigen-specific CD8+ T cell response remained obscure. Therefore, we evaluated the impact of RIPK3 and Caspase-1/11 (Casp-1/11) individual and combined deficiencies on the modulation of antigen-specific CD8+ T cell response during vaccination of mice with ovalbumin-expressing L. monocytogenes (LM-OVA). We observed that Casp-1/11 but not RIPK3 deficiency negatively impacts the capacity of mice to clear LM-OVA. Importantly, both RIPK3 and Casp-1/11 are necessary for optimal LM-OVA-mediated antigen-specific CD8+ T cell response, as measured by in vivo antigen-specific CD8+ T cell proliferation, target cell elimination, and cytokine production. Furthermore, Casp-1/11 and Casp-1/11/RIPK3 combined deficiencies restrict the early initiation of antigen-specific CD8+ T cell memory response. Taken together, our findings demonstrate that RIPK3 and Casp-1/11 influence the quality of CD8+ T cell responses induced by recombinant L. monocytogenes vectors.
Volume
11
Language
English
OCDE Knowledge area
Genética humana Inmunología
Scopus EID
2-s2.0-85083894055
PubMed ID
Source
Frontiers in Immunology
ISSN of the container
16643224
Sponsor(s)
We would like to thank Drs. Vishva Dixit (Genentech, Inc., United States) and Richard Flavell (Yale University, United States) for generously providing C57BL/6 RIPK3–/– and Casp-1/11–/– mice, respectively. We would also like to thank Dr. José Ronnie C. Vasconcelos (Universidade Federal de São Paulo, Brazil) for providing the rhAd5.OVA vector. Funding. This work was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), São Paulo, Brazil, Grant Nos. 2015/12977-4 and 2018/01627-0. FAPESP also provided Ph.D. fellowship to AR and MSc fellowships to FA and MG. HP was a recipient of MSC fellowship from CNPq.
Sources of information: Directorio de Producción Científica Scopus