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Updated: Aug 9, 2026
Culturing of Human Nasal Epithelial Cells at the Air Liquid Interface
Published on: October 8, 2013
Abstract:
Growth patterns of Nosema cuniculi (Encephalitozoon cuniculi) in cell cultures of bovine kidney, canine kidney, feline lung, and rabbit kidney were studied. All cell cultures used were easy to manage and the last 3 are commercially-available established cell lines. The dog kidney cells were the most suitable for large-scale production of Nosema. When grown in plastic flasks with a bottom area of 75 cm2, the weekly yield from Nosema-infected canine kidney cells during the 10th to 17th week after inoculation was between 4-1 times 10-7 and 9-9 times 10-7 spores per flask. An equilibrium was obtained between the Nosema infection and the kidney cells during this time. A simple method for estimating the number of harvested spores is also described.
Insights
Canine kidney cells are ideal for large-scale Nosema cuniculi (Encephalitozoon cuniculi) production, yielding millions of spores weekly after establishing an equilibrium. A simple spore counting method is also detailed.
Area of Science:
- Veterinary Parasitology
- Cell Biology
- Microbiology
Background:
- Nosema cuniculi (Encephalitozoon cuniculi) is an important microsporidian parasite.
- Understanding its in vitro growth is crucial for research and potential therapeutic development.
Purpose of the Study:
- To evaluate different cell cultures for Nosema cuniculi growth.
- To identify the most suitable cell line for large-scale parasite production.
- To describe a method for spore yield estimation.
Main Methods:
- Inoculation of Nosema cuniculi into bovine kidney, canine kidney, feline lung, and rabbit kidney cell cultures.
- Monitoring parasite growth and yield over time.
- Development of a simple spore enumeration technique.
Main Results:
- Canine kidney cells demonstrated superior suitability for Nosema cuniculi cultivation compared to other tested cell lines.
- Stable, high-yield spore production (4.1 x 10^7 to 9.9 x 10^7 spores/flask/week) was achieved in canine kidney cells between weeks 10-17 post-inoculation.
- An equilibrium between parasite and host cells was established during this period.
Conclusions:
- Canine kidney cells are highly effective for the large-scale in vitro production of Nosema cuniculi.
- The study provides a foundation for further research into Nosema cuniculi pathogenesis and control strategies.
- A practical method for quantifying Nosema spores in cell cultures was successfully developed.
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