title: An alternative approach to synthesize cDNA bypassing traditional reverse transcription.
abstract: cDNAs of certain target genes are difficult to obtain by traditional reverse transcription. Herein we describe a novel method to synthesize cDNA based upon the use of the class IIS restriction enzymes. Briefly, the exons of a certain gene are separately PCR-amplified, each using the primers containing a recognition sequence of a certain class IIS restriction enzyme. All the fragments are restricted using the enzyme(s), resulting in the cohesive end of each exon that is complementary to the one in its adjacent exon. Then the fragments can be assembled together in their naturally occurring order. We successfully applied this method to acquire the coding sequence of Hoxa7 gene. This approach is simple, highly efficient, less error prone and cost-effective, and can also be used to fuse different PCR-fragments from distinct genes to create a chimeric gene or to perform site-directed mutagenesis.
authors.affiliation: Key Research Lab of Hormone and Development Affiliated to the Ministry of Health, Tianjin Medical University, Tianjin 300070, PR China.
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Li
authors.forename: Fang
authors.initials: F
authors.lastname: Zheng
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Jiao
authors.forename: Gang
authors.initials: G
authors.lastname: Guo
authors.forename: Bao-Li
authors.initials: BL
authors.lastname: Wang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yao
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D003362:Cost-Benefit Analysis; D017931:DNA Primers; D018076:DNA, Complementary / Q000235:genetics*; D016133:Polymerase Chain Reaction; D014158:Transcription, Genetic
chemical_list: D017931:DNA Primers; D018076:DNA, Complementary