In Vitro Cultivation for Glugea plecoglossi (Microsporidia) Isolated from Ayu (Plecoglossus altivelis)

Autor: Guizong Xu, Zengyi Zhang, Qianjin Zhou, Mingyan Song, Guanjun Yang, Jinwei Kang, Zhongjie Xu, Fangjie Chen, Jiong Chen
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Microorganisms, Vol 12, Iss 3, p 522 (2024)
Druh dokumentu: article
ISSN: 2076-2607
DOI: 10.3390/microorganisms12030522
Popis: Glugea plecoglossi is an obligate intracellular microsporidium, which poses a significant threat to ayu (Plecoglossus altivelis). In vitro cultivation models are invaluable tools for investigating intracellular microorganisms, including G. plecoglossil. In this study, we attempted to in vitro cultivate G. plecoglossi using primary cultures derived from ayu monocytes/macrophages (MO/MΦ), a murine-derived macrophage cell line RAW264.7, and the epithelioma papulosum cyprini (EPC) cell line. The results demonstrated that MO/MΦ infected with spores exhibited a pronounced immune response which was presented by rapidly high expression levels of inflammatory cytokines, such as PaIL-1β, PaTNF-α, PaIL-10, and PaTGF-β, and detached within 96 h post-infection (hpi). Infected RAW264.7 cells remained capable of stable passage yet exhibited cellular deformation with a decrease in intracellular spores occurring around 8 days post-infection (dpi). In contrast, EPC cells promised a substantial parasite population, and the cytokine expression levels returned to normal by 8 dpi. In addition, G. plecoglossi spores recovered from EPC cells could infect young ayu, suggesting that EPC cells might be used as an in vitro cultivation system for G. plecoglossi.
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