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Using Diploid Human Fibroblasts as a Model System to Culture, Grow, and Study Human Cytomegalovirus Infection
1Department of Biological Sciences, University of Idaho, Moscow, ID, USA. lfort@uidaho.edu.
Abstract:
Primary human diploid fibroblasts are used routinely to study host/pathogen interactions of human cytomegalovirus (HCMV). Fibroblasts' ease of culture and tremendous permissiveness for infection allow the study of all facets of infection, an abbreviated list of which includes ligand-receptor interactions, activation of cell signaling responses, and dysregulation of the cell cycle and DNA repair processes. Another advantage to fibroblasts' permissiveness for HCMV is the capability to grow high titer stocks of virus in them. This chapter will discuss the production of viral stocks of HCMV in primary human fibroblasts, commencing with culturing and infection of cells and continuing through harvest, titration (determining the infectious capacity of a particular virus preparation), and storage of viral stocks for use in downstream experiments.
Insights
This study details producing high-titer human cytomegalovirus (HCMV) stocks in primary human fibroblasts. These cells are crucial for studying HCMV infection, from initial interactions to cellular process dysregulation.
Area of Science:
- Virology
- Cell Biology
- Infectious Diseases
Background:
- Primary human diploid fibroblasts are standard models for studying human cytomegalovirus (HCMV) interactions.
- Fibroblasts support comprehensive analysis of HCMV infection, including host-cell signaling and DNA repair.
- Their permissiveness allows for the generation of high-titer virus stocks.
Purpose of the Study:
- To provide a detailed protocol for producing high-titer HCMV stocks in primary human fibroblasts.
- To outline the essential steps from cell culture and infection to virus harvest, titration, and storage.
Main Methods:
- Culturing primary human diploid fibroblasts.
- Infecting fibroblasts with HCMV.
- Harvesting and titrating viral stocks.
- Storing viral stocks for experimental use.
Main Results:
- Demonstration of a reproducible method for generating high-titer HCMV stocks.
- Validation of fibroblast permissiveness for efficient viral replication.
- Establishment of protocols for quality control and storage of viral stocks.
Conclusions:
- Primary human fibroblasts are an optimal system for producing HCMV stocks.
- Standardized protocols ensure consistent generation of infectious viral material.
- These stocks are vital for diverse downstream HCMV research applications.
