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• W3007788856 startingPage "101463" @default.
• W3007788856 abstract "This study aimed to provide mechanistic insights into mitophagy pathway associated with papillomavirus infection in urothelial cells of cattle. The elimination of mitochondria via autophagy, termed mitophagy, is an evolutionarily conserved mechanism for mitochondrial quality control and homeostasis. PINK1/parkin-mediated mitophagy, a ubiquitin-dependent selective autophagy of dysfunctional mitochondria, has been described here, for the first time, in urothelial cells from 25 bladder cancers in cattle infected by bovine papillomavirus (BPV). The expression of BPV-2 and BPV-13 E5 oncoprotein was detected by RT-PCR. Abnormal mitochondria delimited by expanding phagophores, were peculiar ultrastructural features of neoplastic urothelial cells. High levels of mitochondrial phosphorylated PINK1/parkin were observed in neoplastic urothelial cells infected by BPVs. Phosphoparkin interacted with mitofusin 2 (Mfn2) and ubiquitin (Ub), which confirmed that Mfn2 is a parkin receptor at the mitochondrial level, where parkin interacted also with Ub. Furthermore, parkin established a complex that was comprised of optineurin, p62, LC3, laforin, and embryonic stem cell-expressed Ras (ERAS), that interacted with BPV E5 oncoprotein, and Bag3, which, in turn, regulated the formation of a complex composed of Hpc70/Hsp70, CHIP, an HSC70-interacting E3 ubiquitin ligase. It is conceivable that ERAS is involved in mitophagosome maturation via phosphatidylinositol 3-kinase (PI3K) pathway. Bag3, in association with Hsc70/Hsp70, may contribute to the transport and degradation of CHIP-ubiquitinated cargo as this complex recognises ubiquitinated cargos and transports them to aggresomes to be degraded. Furthermore, Bag3 may be involved in mitophagosome formation as it interacted with synaptopodin 2, which is known to play a role in mitophagosome biogenesis." @default.
• W3007788856 created "2020-03-06" @default.
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• W3007788856 date "2020-06-01" @default.
• W3007788856 modified "2023-09-27" @default.
• W3007788856 title "Bovine papillomavirus E5 oncoprotein upregulates parkin-dependent mitophagy in urothelial cells of cattle with spontaneous papillomavirus infection: A mechanistic study" @default.
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• W3007788856 doi "https://doi.org/10.1016/j.cimid.2020.101463" @default.
• W3007788856 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32146261" @default.
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