Journal
BIOTECHNIQUES
Volume -, Issue -, Pages -Publisher
FUTURE SCI LTD
DOI: 10.2144/btn-2023-0063
Keywords
cytokine; housekeeping genes; immune response; internal control genes; listeriosis; macrophages; real-time qPCR; relative expression; RT-qPCR; spleen
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This study identified suitable reference genes for different conditions in a mouse model of Listeria monocytogenes and highlighted the importance of RT-qPCR in gene expression analysis.
RT-qPCR dissects transcription-based processes but requires reference genes (RGs) for data normalization. This study prospected RGs for mouse macrophages (pMo) and spleen infected with Listeria monocytogenes. The pMo were infected in vitro with L. monocytogenes or vehicle for 4 h. Mice were injected with L. monocytogenes (or vehicle) and euthanized 24 h post-injection. The RGs came from a multispecies primer set, from the literature or designed here. The RG ranking relied on GeNorm, NormFinder, BestKeeper, Delta-CT and RefFinder. B2m-H3f3a-Ppia were the most stable RGs for pMo, albeit RG indexes fine-tuned estimations of cytokine relative expression. Act beta-Ubc-Ppia were the best RGs for spleen but modestly impacted the cytokine relative expression. Hence, mouse models of L. monocytogenes require context-specific RGs for RT-qPCR, thus reinforcing its paramount contribution to accurate gene expression profiling.
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