A Novel Chimeric Fiber-C4/D11 Subunit Vaccine Induces Cross-Neutralizing Antibodies and Provides Better Protection Against Fowl Adenovirus (FAdV) Type 4 and Type 11 Than the Fiber-D11/C4 Subunit Vaccine.

ABSTRACT: The widespread prevalence of different serotypes of fowl adenoviruses (FAdVs) has led to diverse vaccine demands, especially for subunit vaccines targeting FAdV-4 and FAdV-11, which cause hydropericardium-hepatitis syndrome (HHS) and inclusion body hepatitis (IBH), respectively. Although the Fiber protein is known to elicit robust immune protection, further exploration is needed to enhance the production of cross-neutralizing antibodies. This study utilized structural prediction and homology modeling techniques, employing domain-swapping strategy to integrate neutralizing epitope-containing amino acid sequences (274-451aa and 364-543aa) into the shaft domain of the Fiber protein. Two novel chimeric proteins were recombinantly expressed and developed into subunit vaccines: Fiber-C4/D11 and

SUBMITTER: Wang X 

PROVIDER: S-EPMC12474205 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature