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Updated: Feb 8, 2026

Expression of Transgenes in Native Bladder Urothelium Using Adenovirus-Mediated Transduction
Published on: October 6, 2022
Adenovirus transduction: More complicated than receptor expression.
Priyanka Sharma1, Prithy C Martis2, Katherine J D A Excoffon3
1Department of Biological Sciences, Wright State University, Dayton, OH, USA.
Host cell susceptibility to adenovirus infection depends on the Coxsackievirus and adenovirus receptor (CAR). CAR isoform expression and cell polarity significantly impact adenovirus transduction, crucial for gene therapy strategies.
Area of Science:
- Virology
- Cell Biology
- Molecular Biology
Background:
- Virus receptor abundance and accessibility dictate host cell susceptibility to infection.
- The Coxsackievirus and adenovirus receptor (CAR) exists in two transmembrane isoforms due to alternative splicing, affecting function in polarized epithelia.
Purpose of the Study:
- To investigate the relevance of CAR isoform-specific expression across various cell types.
- To correlate CAR isoform abundance and localization with adenovirus transduction susceptibility.
Main Methods:
- Determined abundance and localization of both CAR isoforms in ten common cell lines.
- Compared CAR expression and adenovirus transduction in cell lines versus polarized primary human airway epithelia.
Main Results:
- Significant variation in CAR gene and protein expression for both isoforms was observed across cell lines.
- Cellular polarity, indicated by transepithelial resistance, showed an inverse relationship with adenovirus transduction efficiency.
Conclusions:
- Isoform-specific CAR expression and cell polarity are critical parameters for adenovirus research.
- These factors must be considered for the clinical relevance of adenovirus-mediated gene therapy and anti-adenovirus strategies.
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