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Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay
Published on: June 9, 2011
Screening and identification of persistent viruses in cell lines derived from medically important arthropods
Ryo Matsumura1,2, Daisuke Kobayashi2,3, Astri Nur Faizah2
1Graduate School of Agriculture, Meiji University, Kasawaki-shi, Kanagawa, Japan.
Abstract:
Arthropod-derived cell lines serve as crucial tools for studying arthropod-borne viruses (arboviruses). However, it has recently come to light that certain cell lines harbor persistent infections of arthropod-specific viruses, which do not cause any apparent cytopathic effects. Moreover, some of these persistent viral infections either inhibit or promote the growth of arboviruses. Therefore, it is of utmost importance to identify the presence of such persistent viruses and understand their impact on arboviral infections. In this study, we conducted a comprehensive virome analysis of several arthropod-derived cell lines, including mosquito-derived NIID-CTR, Ar-3, MSQ43, NIAS-AeAl-2, CCL-126 cells, and tick-derived IDE8 cells, along with flesh fly-derived NIH-Sape-4 cells. The aim was to determine if these cells were infected with persistent viruses. The results revealed the presence of 15 persistent viruses in NIID-CTR, Ar-3, MSQ43, NIAS-AeAl-2, and IDE8 cells. Among these, 11 were already known arthropod-specific viruses, while the remaining 4 were novel viruses belonging to Orthophasmavirus, Rhabdoviridae, Totiviridae, and Bunyavirales. In contrast, CCL-126 and NIH-Sape-4 cells appeared to be free of viral infections. This study provides valuable insights into the diversity and latency of arthropod-specific viruses within arthropod-derived cell lines. Further investigations are required to explore persistent viral infections in other arthropod-derived cell cultures and their effects on arbovirus replication. Understanding these factors will enhance the accuracy and reliability of experimental data obtained using these cell lines.
Insights
Researchers screened arthropod cell lines for persistent viral infections. They discovered 15 viruses, including 4 novel types, in mosquito and tick cells, impacting arbovirus research.
Area of Science:
- Virology
- Cell Biology
- Entomology
Background:
- Arthropod-derived cell lines are vital for studying arthropod-borne viruses (arboviruses).
- Some cell lines harbor persistent, unapparent viral infections that can influence arbovirus replication.
- Identifying these latent viruses is crucial for accurate arbovirus research.
Purpose of the Study:
- To conduct a comprehensive virome analysis of various arthropod-derived cell lines.
- To identify persistent viral infections within these cell lines.
- To assess the presence of novel arthropod-specific viruses.
Main Methods:
- Virome analysis of mosquito, tick, and flesh fly cell lines.
- Detection and characterization of persistent viruses using molecular techniques.
- Comparative analysis of viral loads across different cell lines.
Main Results:
- Fifteen persistent viruses were detected in mosquito (NIID-CTR, Ar-3, MSQ43, NIAS-AeAl-2) and tick (IDE8) cell lines.
- Eleven known arthropod-specific viruses and four novel viruses (Orthophasmavirus, Rhabdoviridae, Totiviridae, Bunyavirales) were identified.
- Flesh fly (NIH-Sape-4) and one mosquito (CCL-126) cell lines appeared virus-free.
Conclusions:
- Arthropod cell lines can harbor diverse persistent viral infections, including novel viral families.
- The presence of these viruses can impact arbovirus studies, necessitating careful screening.
- Further research is needed to understand the full impact of persistent viruses on arbovirus replication and experimental outcomes.
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