Although less commonly documented, cytoplasmic endosymbionts have also evolved to i) sex-reverse genetically male offspring (hereafter CYTO-FEM) or ii) induce asexual reproduction in their female carriers (hereafter CYTO-ASEX) (reviewed in chapter 5 of Burt and Trivers 2006).
Reverse genetic approaches utilize genetically engineered mice to analyze the function of disease-associated genes and their variants.
Recent advances in reverse genetics, which can genetically manipulate the genomes of negative-stranded viruses and generate infectious viruses, will help to engineer viruses with modifications and facilitate the investigation of the pathogenesis of SFTSV and will hopefully open new perspectives to produce efficacious and safe SFTSV vaccines.
Using reverse genetics, researchers developed a genetically engineered vaccine candidate (called a reference virus) against H5N1 in a matter of weeks, demonstrating the power of this technology (29 ).
Employing reverse genetics, where PXR has been genetically deleted, hUGT1/Pxr−/− mice show limited induction of the liver UGT1A genes during pregnancy, whereas the exact opposite occurs in newborn mice.
The vaccine prepared from genetically modified FMDV by reverse genetics significantly improved the protective efficacy to the variant of the CHY topotype, compared with the wild O/HN/CHA/93 virus.
The present study indicated that vaccine prepared from genetically modified FMDV by reverse genetics significantly improved protective efficacy to the variant of the CHY topotype, compared with the O/HN/CHA/93 strain.
In addition to RAS, advances in reverse genetics led to the generation of the genetically attenuated parasites (GAP).
These findings can be extended to other genetically engineered H1N1 influenza vaccines using reverse genetic techniques [21]; [22] or using other recombinant viral vectors [23] [25], and warrant the use of a codon-optimized version of the gene encoding HA.
Furthermore, the present study provided further insights for designing genetically modified FMD vaccine candidate by reverse genetics, based on the sequence information of arising mutants during the new FMD outbreak.
