Xenopus, a Unique Comparative Model to Explore the Role of Certain Heat Shock Proteins and Non-classical MHC Class Ib Gene Products in Immune Surveillance
Overview
Affiliations
The heat shock proteins (HSPs) gp96 and hsp70 can elicit potent anti-tumor responses and as such have significant clinical potential. Besides cytotoxic CD8 T cell (CTLs) effectors, evidence suggests that natural killer (NK) cells and other less well-characterized cell types also play a critical role in HSP-mediated anti-tumor responses. Owing to their high degree of phylogenetic conservation, we have proposed that HSPs are ancestral agents of immune surveillance; and postulated that their immunological properties, if important, should have been conserved during evolution. We are investigating this issue using a unique non-mammalian comparative tumor-immunity model in the frog Xenopus, which allows us to focus on the relationship between HSPs, classical MHC class Ia, and non-classical MHC class Ib molecules. In addition to a transplantable lymphoid tumor in genetically defined cloned Xenopus, we are generating transgenic frogs with inducible or knocked-down (RNAi) gene expression.
The Amphibian Major Histocompatibility Complex-A Review and Future Outlook.
Sabino-Pinto J, Maan M J Mol Evol. 2025; 93(1):38-61.
PMID: 39774934 PMC: 11850509. DOI: 10.1007/s00239-024-10223-7.
Robert J, Cohen N Dev Comp Immunol. 2011; 35(9):916-23.
PMID: 21277325 PMC: 3109137. DOI: 10.1016/j.dci.2011.01.014.
Chida A, Goyos A, Robert J Dev Comp Immunol. 2010; 35(3):366-77.
PMID: 21075137 PMC: 3073561. DOI: 10.1016/j.dci.2010.11.005.
Morales H, Abramowitz L, Gertz J, Sowa J, Vogel A, Robert J J Virol. 2010; 84(10):4912-22.
PMID: 20200236 PMC: 2863837. DOI: 10.1128/JVI.02486-09.
Comparative and developmental study of the immune system in Xenopus.
Robert J, Ohta Y Dev Dyn. 2009; 238(6):1249-70.
PMID: 19253402 PMC: 2892269. DOI: 10.1002/dvdy.21891.