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A synthetic human cytomegalovirus pp65-IE1 fusion antigen efficiently induces and expands virus specific T cells.
Vaccine 35, 5131-5139 (2017)
Infection with human cytomegalovirus (HCMV) can cause severe complications in newborns and immunocompromised patients, and a prophylactic or therapeutic vaccine against HCMV is not available. Here, we generated a HCMV vaccine candidate fulfilling the regulatory requirements for GMP-compliant production and clinical testing. A novel synthetic fusion gene consisting of the coding sequences of HCMV pp65 and IE1 having a deleted nuclear localization sequence and STAT2 binding domain was introduced into the genome of the attenuated vaccinia virus strain MVA. This recombinant MVA, MVA-syn65_IE1, allowed for the production of a stable ∼120kDa syn65_IE1 fusion protein upon tissue culture infection. MVA-syn65_IE1 infected CD40-activated B cells activated and expanded pp65- and IE1-specific T cells derived from HCMV-seropositive donors to at least equal levels as control recombinant MVA expressing single genes for pp65 or IE1. Additionally, we show that MVA-syn65_IE1 induced HCMV pp65- and IE1-epitope specific T cells in HLA-A2.1-/HLA-DR1-transgenic H-2 class I-/class II-knockout mice. Thus, MVA-syn65_IE1 represents a promising vaccine candidate against HCMV and constitutes a basis for the generation of a multivalent vaccine targeting relevant pathogens in immunocompromised patients.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Human Herpesvirus-5, Hhv-5 ; Modified Vaccinia Virus Ankara ; Poxvirus ; Vector Vaccine; Recombinant Vaccinia Virus; Allogeneic Bone-marrow; Attenuated Mva Strain; Adoptive Immunotherapy; Host-range; In-vitro; Cellular-immunity; Ie1-pp65 Protein; Influenza-virus; Human Cmv
ISSN (print) / ISBN
0264-410X
e-ISSN
1358-8745
Journal
Vaccine
Quellenangaben
Volume: 35,
Issue: 8,
Pages: 5131-5139
Publisher
Elsevier
Publishing Place
Oxford
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Gene Vector (AGV)