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Immun Inflamm Dis. 2018 Mar;6(1):163-175. doi: 10.1002/iid3.209. Epub 2017 Dec 4.

Dendritic cell targeted HIV-1 gag protein vaccine provides help to a recombinant Newcastle disease virus vectored vaccine including mobilization of protective CD8+ T cells.

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Department of Biochemistry, University of Yaounde One, P.O. Box 812, Yaounde, Cameroon.
Laboratory of Vaccinology/Biobanking of The Chantal Biya International Reference Center for research on the prevention and management of HIV/AIDS (CIRCB), BP 3077, Messa Yaounde, Cameroon.
Microbiology and Immunology Laboratory, CIRCB, Yaounde, Cameroon.
Department of Animal Biology and Physiology, University of Yaounde One, P.O. Box 812, Yaounde, Cameroon.
Department of biomedical sciences, University of Dschang, Dschang, Cameroon.
Department of Microbiology, University of Yaounde One, P.O. Box 812, Yaounde, Cameroon.
Department of biochemistry, University of Dschang, Dschang, Cameroon.
Department of Medical Laboratory Science College of Medicine, Nnewi Campus, Nnamdi Azikiwe University, Awka, Anambra.
GenØk - Centre for Biosafety, Tromsø, Norway.
Myles Thaler Center for AIDS and Human Retrovirus Research, Department of Microbiology, Immunology and Cancer Biology, Jordan Hall 7088, 1340 Jefferson Park Avenue, Charlottesville, Virginia 22903, USA.
Department of Pharmaceutical Microbiology and Biotechnology, Nnamdi Azikiwe University, Awka, Nigeria.
Department of Biological Sciences # 223, Alabama State University, 1627, Hall Street, Montgomery, Alabama 36104, USA.
Laboratory of Immunology, Brain Korea 21 PLUS Project for Medical Science, Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
Laboratory of Cellular Physiology and Immunology and Chris Browne Center for Immunology and Immune Diseases, Rockefeller University, New York, New York 10065, USA.
Institute of Clinical and Molecular Virology, University Hospital Erlangen, Erlangen, Germany.



Recombinant Newcastle Disease virus (rNDV) vectored vaccines are safe mucosal applicable vaccines with intrinsic immune-modulatory properties for the induction of efficient immunity. Like all viral vectored vaccines repeated inoculation via mucosal routes invariably results to immunity against viral vaccine vectors. To obviate immunity against viral vaccine vectors and improve the ability of rNDV vectored vaccines in inducing T cell immunity in murine air way we have directed dendritic cell targeted HIV-1 gag protein (DEC-Gag) vaccine; for the induction of helper CD4+ T cells to a Recombinant Newcastle disease virus expressing codon optimized HIV-1 Gag P55 (rNDV-L-Gag) vaccine.


We do so through successive administration of anti-DEC205-gagP24 protein plus polyICLC (DEC-Gag) vaccine and rNDV-L-Gag. First strong gag specific helper CD4+ T cells are induced in mice by selected targeting of anti-DEC205-gagP24 protein vaccine to dendritic cells (DC) in situ together with polyICLC as adjuvant. This targeting helped T cell immunity develop to a subsequent rNDV-L-Gag vaccine and improved both systemic and mucosal gag specific immunity.


This sequential DEC-Gag vaccine prime followed by an rNDV-L-gag boost results to improved viral vectored immunization in murine airway, including mobilization of protective CD8+ T cells to a pathogenic virus infection site.


Thus, complementary prime boost vaccination, in which prime and boost favor distinct types of T cell immunity, improves viral vectored immunization, including mobilization of protective CD8+ T cells to a pathogenic virus infection site such as the murine airway.


Complementary prime boost; immunity; murine airway; polyfunctional T cells; protective

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