[Screening of prothrombotic state-related genes from human hepatic cDNA library].

Objective: To screen prothrombotic state-related cDNA sequences from human hepatic cDNA library.

Methods: The subtracted cDNA library for differentially expressed genes in rat liver of prothrombotic state (PTS) was constructed by suppression subtractive hybridization. Positive clones were identified by differential screening. The target DNA sequences of positive cDNA clones of differentially expressed genes from rat liver of PTS were amplified by PCR. The PCR products were used as probes to screen a human hepatic cDNA library. After the first, second and third screening, the transduction of a positive lambdaTripIEx lysate into E. coli strain BM25. 8 promoted the circularization of pTripIEx. The positive circularized plasmids were identified by double enzyme digestion. The cDNA fragments of the positive plasmids were sequenced and analyzed by bioinformatics (blastn).

Results: Four PTS-related cDNA sequences were identified from human hepatic cDNA library. For 3 of them, their products of expression were respectively fibrinogen, LFIRE1, and chromosome 10 open reading frame 104 mRNA. The fourth sequence had homology with carbamoyl-phosphate synthetase 1 gene.

Conclusion: Four PTS-related cDNA sequences have been identified from human hepatic cDNA library.