Result: Of these various HBV-mimicking HIV-1
RT mutants, we found that one with triple mutations (HIV-1
RTF115Y/
Y116F/
Q151M) was suitable for exploring the 3TC/ETV resistant mechanism, since replication-competent HIV-1F115Y/
Y116F/
Q151M exhibits substantial 3TC/ETV susceptibility, compared with HIV-1
Q151M and HIV-1WT.
Result: Therefore, we chose three corresponding mutations,
M184V,
F160M, and
Q182G, in HIV-1
RT to investigate resistance to 3TC/ETV in HIV-1F115Y/
Y116F/
Q151M to 3TC and ETV.