Apoptosis induced by Ibaraki virus does not affect virus replication and cell death in hamster lung HmLu-1 cells

Autor: Rie Watanabe, Yuya Tsuruta, Hiroyuki Iwata, Shusaku Shibutani
Rok vydání: 2019
Předmět:
Zdroj: The Journal of Veterinary Medical Science
ISSN: 1347-7439
0916-7250
DOI: 10.1292/jvms.18-0366
Popis: Ibaraki virus (IBAV) is an arbovirus that is transmitted by biting midges and causes Ibaraki disease in cattle. IBAV induces apoptosis in several mammalian cell lines, and apoptosis in turn facilitates IBAV replication. In addition, virus-induced apoptosis may contribute to mammalian-specific pathogenicity considering that some arboviruses induce apoptosis in mammalian cells but not in insect cells. In this study, we found that when hamster lung cells (HmLu-1) are used as a virus host, IBAV causes severe cytopathic effects with little induction of apoptosis. Furthermore, pharmacological inhibition of apoptosis did not affect IBAV-induced cytotoxicity. These results indicate the existence of an apoptosis-independent pathway in which IBAV replicates and exerts cytotoxicity in mammalian cells.
Databáze: OpenAIRE