Abstract
We constructed recombinant vaccinia viruses (RVVs) that expressed human T-cell leukemia virus type I (HTLV-I) envelope glycoproteins by using attenuated vaccinia viruses (VVs) which have much lower neurovirulence than the WR strain that is extensively used as a vector. The RVV produced from the LC16mO strain, one of the attenuated VVs, elicited a high titer of anti-HTLV-I antibody in rabbits and protected them against HTLV-I infection. The env gene was inserted into the VV hemagglutinin gene. The resultant inactivation of the hemagglutinin gene led to the attenuation of VVs, but the extent of their attenuation depended on the VV strain. The propagation of LC16mO and its RVV in rabbit brain was poorer than that of LO-1, a cloned derivative of Lister strain, and its RVV, although LC16mO replicated in other organs better than did LO-1. Taken together, these results suggest that LC16mO is a good candidate as a vector for vaccination of humans.
MeSH Terms
Animals
Brain/microbiology
Cell Line
Gene Expression Regulation
Genes, Viral
Glycoproteins/biosynthesis,genetics,immunology
HTLV-I Infections/prevention & control
Hemagglutinins, Viral/genetics
Human T-lymphotropic virus 1/genetics,immunology
Male
Mice
Precipitin Tests
Rabbits
Vaccines
Vaccines, Attenuated
Vaccines, Synthetic
Vaccinia virus/genetics,growth & development,immunology,pathogenicity
Viral Envelope Proteins/biosynthesis,genetics,immunology
Viral Vaccines
Virulence
Chemicals
Glycoproteins
Hemagglutinins, Viral
Vaccines
Vaccines, Attenuated
Vaccines, Synthetic
Viral Envelope Proteins
Viral Vaccines
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Shida H
Institute for Virus Research, Kyoto University, Japan.
Hinuma Y
Hatanaka M
Morita M
Kidokoro M
Suzuki K
Maruyama T
Takahashi-Nishimaki F
Sugimoto M
Kitamura R
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