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Optimized Propagation and Purification Protocols for Large-Scale Production of Rhinovirus C.

Jason Kaiya1, Mark K Devries1, James E Gern1

  • 1Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA.

Viruses
|February 27, 2026
PubMed
Summary
This summary is machine-generated.

We optimized methods to produce high-titer Rhinovirus C (RV-C) preparations for research. A lipase-based purification method yields high-quality virus, accelerating therapeutic and vaccine development for RV-C infections.

Keywords:
cadherin-related family member 3propagationpurificationrhinovirus C

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Area of Science:

  • Virology
  • Molecular Biology
  • Immunology

Background:

  • Rhinovirus C (RV-C) causes significant respiratory illness, including asthma exacerbations.
  • Developing treatments is hindered by challenges in producing high-titer RV-C.
  • This study aimed to optimize RV-C production and purification.

Purpose of the Study:

  • To optimize large-scale production and purification of Rhinovirus C (RV-C).
  • To facilitate structural and immune response studies of RV-C.
  • To enable development of RV-C targeted therapeutics and vaccines.

Main Methods:

  • Optimized protocols for RV-C15a propagation and purification in HeLa-E8 cells expressing CDHR3.
  • Compared virus yields in adherent vs. suspension cultures.
  • Evaluated calcium supplementation, infection timing, and purification strategies (ultracentrifugation, dialysis, lipase treatment).

Main Results:

  • RV-C15a yields were lower in suspension cultures due to post-entry replication limitations.
  • Adherent cultures with early infection and calcium supplementation improved yields.
  • Lipase treatment followed by ultracentrifugation yielded highly pure, concentrated RV-C preparations.

Conclusions:

  • A robust system for large-scale RV-C15a production in adherent HeLa-E8 cells was established.
  • Lipase-based purification is recommended for rapid, effective production of high-quality viral preparations.
  • These advances support structural studies and accelerate development of RV-C therapeutics and vaccines.