| 摘要 |
The invention provides methods and compositions for directional nucleic acid amplification and sequencing. The invention further provides methods and compositions for the construction of directional eDNA libraries. The method may comprise: a) reverse transcribing a RNA sample to generate a first strand eDNA; b) generating a second strand eDNA from the rrrst strand eDNA, wherein at least one of the four dNTPs dATP, dCTP, dGTP or dTTP is replaced by a modified dNTP during second strand synthesis and incorporated into the second strand, thereby generating a double-stranded eDNA; c) performing end repair on the double-stranded eDNA; d) Iigating adaptors to the double-stranded eDIMA, wherein only one of the adaptors has the modified dNTP incorporated into a ligation strand of the adaptor; e) performing gap repair; and f) selectively cleaving the second strand and the ligation strand of the adaptor that has the modified dNTP by a suitable cleavage agent. |
