Journal
MOLECULAR REPRODUCTION AND DEVELOPMENT
Volume 70, Issue 1, Pages 30-36Publisher
WILEY
DOI: 10.1002/mrd.20185
Keywords
HBV; expression; spermatozoa; IVF
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The main objectives of this study were to introduce motile human sperm carrying Hepatitis B virus (HBV) DNA to golden hamster oocytes in a co-culture environment and to detect the replication and expression of the HBx gene in early embryonic cells. Zona-free hamster oocytes were inseminated with human sperm carrying pBR322-HBV DNA plasmid using the in vitro fertilization (IVF) technique. Both the one- and two-cell stages of early embryonic development were studied. PCR, RT-PCR, and Dot hybridization were performed to observe the HBx gene and its expression in these stages. Fluorescence in situ hybridization (FISH) was carried out to confirm the integration of HBV into the pronucleus, nucleus, and the chromosomes of embryos. The results showed that we have the ability to obtain a fertilization rate of 80%. RT-PCR showed that the HBx gene could be expressed in both one- and two-cell stages of embryonic development. The data suggested the possibility of sperm as a vector for the vertical transmission of HBV DNA to the next generation. (C) 2005 Wiley-Liss, Inc.
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