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Human Adenovirus Type 26 Infection Mediated by αvβ3 Integrin Is Caveolin-1-Dependent

Nestić, Davor; Custers, Jerome; Švec, Danijel; Majhen, Dragomira (2022) Human Adenovirus Type 26 Infection Mediated by αvβ3 Integrin Is Caveolin-1-Dependent. Microbiology Spectrum, 10 (4). ISSN 2165-0497

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Human adenovirus type 26 (HAdV26) has been recognized as a promising platform for vaccine vector development, and very recently vaccine against COVID-19 based on HAdV26 was authorized for emergency use. Nevertheless, basic biology of this virus, namely, pathway which HAdV26 uses to enter the cell, is still insufficiently known. We have shown here that HAdV26 infection of human epithelial cells expressing low amount of αvβ3 integrin involves clathrin and is caveolin-1- independent, while HAdV26 infection of cells with high amount of αvβ3 integrin does not involve clathrin but is caveolin-1-dependent. Thus, this study demonstrates that caveolin-1 is limiting factor in αvβ3 integrin-mediated HAdV26 infection. Regardless of αvβ3 integrin expression, HAdV26 infection involves dynamin-2. Our data provide for the first-time description of HAdV26 cell entry pathway, hence increase our knowledge of HAdV26 infection. Knowing that functionality of adenovirus vector is influenced by its cell entry pathway and intracellular trafficking, our results will contribute to better understanding of HAdV26 immunogenicity and antigen presentation when used as vaccine vector.

Item Type: Article
Uncontrolled Keywords: αvβ3 integrin ; human adenovirus type 26 infection ; adenovirus cell entry, caveolin-1, clathrin, dynamin-2, internalization, non-enveloped DNA virus ; vaccine vector ; virus endocytosis
Subjects: NATURAL SCIENCES > Biology
NATURAL SCIENCES > Biology > Microbiology
Divisions: Division of Molecular Biology
Project titleProject leaderProject codeProject type
Endocitoza adenovirusa i urođeni imunosni odgovorMajhen, DragomiraIP-2019-04-6048HRZZ
Razumijevanje puta ulaska Adenovirusa tipa 26 u stanicu: način poboljšanja vektora za vakcinacijuMajhen, DragomiraUIP-2014-09-3912HRZZ
Depositing User: Dragomira Majhen
Date Deposited: 01 Dec 2022 13:21
DOI: 10.1128/spectrum.01097-22

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