原, 英之 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
千田, 淳司 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
内山, 圭司 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
Pasiana, Agriani Dini Tokushima University
高橋, 悦久 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
木戸, 博 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
坂口, 末廣 Tokushima University 徳島大学 教育研究者総覧 KAKEN研究者をさがす
Misfolding of the cellular prion protein, PrPC, into the amyloidogenic isoform, PrPSc, which forms infectious protein aggregates, the so-called prions, is a key pathogenic event in prion diseases. No pathogens other than prions have been identified to induce misfolding of PrPC into PrPSc and propagate infectious prions in infected cells. Here, we found that infection with a neurotropic influenza A virus strain (IAV/WSN) caused misfolding of PrPC into PrPSc and generated infectious prions in mouse neuroblastoma cells through a hit-and-run mechanism. The structural and biochemical characteristics of IAV/WSN-induced PrPSc were different from those of RML and 22L laboratory prions-evoked PrPSc, and the pathogenicity of IAV/WSN-induced prions were also different from that of RML and 22L prions, suggesting IAV/WSN-specific formation of PrPSc and infectious prions. Our current results may open a new avenue for the role of viral infection in misfolding of PrPC into PrPSc and formation of infectious prions.
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