Related Experiment Video
Updated: Jul 9, 2026
MicroRNA-based Regulation of Picornavirus Tropism
Published on: February 6, 2017
Human parechovirus type 1, 3, 4, 5, and 6 detection in picornavirus cultures
Michel de Vries1, Krzysztof Pyrc, Ron Berkhout
1Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam, Academic Medical Center of University of Amsterdam, Amsterdam, The Netherlands.
Abstract:
Picornavirus cultures that could not be typed in neutralization assays were analyzed by VP1 reverse transcription-PCR (RT-PCR) and a virus discovery tool (VIDISCA). Human parechoviruses (HPeVs) were frequently identified, among which were the uncommon isolates HPeV-4, HPeV-5, and HPeV-6. The HPeV-5 isolate could be amplified only by VIDISCA and not by VP1 RT-PCR.
Insights
Uncommon human parechoviruses (HPeVs), including HPeV-5, were identified in picornavirus cultures using novel methods. The virus discovery tool VIDISCA detected HPeV-5 when standard VP1 reverse transcription-PCR (RT-PCR) failed, improving viral diagnostics.
Area of Science:
- Virology
- Molecular Biology
- Infectious Diseases
Background:
- Picornavirus typing is crucial for understanding viral epidemiology and disease. Standard neutralization assays can be limited in identifying all viral types. Molecular methods like RT-PCR are essential for viral characterization.
- Some picornaviruses, particularly human parechoviruses (HPeVs), are difficult to type using conventional methods. This can lead to underdiagnosis or misidentification of viral agents.
- The development of advanced molecular tools is necessary to overcome the limitations of traditional typing assays and improve the detection of diverse viral strains.
Purpose of the Study:
- To investigate the utility of VP1 reverse transcription-PCR (RT-PCR) and a virus discovery tool (VIDISCA) for typing picornavirus cultures that were uncharacterizable by neutralization assays.
- To identify and characterize human parechoviruses (HPeVs) within these challenging clinical samples.
- To compare the sensitivity and scope of VIDISCA against VP1 RT-PCR for detecting uncommon HPeV isolates.
Main Methods:
- Analysis of picornavirus cultures using VP1 reverse transcription-PCR (RT-PCR).
- Application of a virus discovery tool (VIDISCA) for broad viral identification.
- Sequencing and characterization of identified viral isolates, focusing on human parechoviruses.
Main Results:
- Human parechoviruses (HPeVs) were frequently identified among the previously untyped picornavirus cultures.
- Uncommon HPeV types, including HPeV-4, HPeV-5, and HPeV-6, were detected.
- Notably, the HPeV-5 isolate was successfully amplified and identified exclusively by VIDISCA, while standard VP1 RT-PCR failed to detect it.
Conclusions:
- VIDISCA represents a valuable tool for the discovery and characterization of difficult-to-type viruses, including uncommon HPeV strains.
- The findings highlight the limitations of standard VP1 RT-PCR for certain viral isolates and underscore the importance of complementary diagnostic approaches.
- Enhanced molecular techniques like VIDISCA are critical for comprehensive viral diagnostics and epidemiological surveillance of human parechoviruses.
