关键词: 日本血吸虫成虫, 吡喹酮, 抑制性消减杂交, 差异表达序列

Abstract:

Objective To establish subtracted cDNA libraries using the suppression subtractive hybridization (SSH) technique based on the livers of New Zealand white rabbits infected with Schistosoma japonicum before and after praziquantel treatment, providing the basis for screening the drug-response molecular target during the therapy. Methods New Zealand white rabbits infected with S. japonicum were assigned to two groups to receive praziquantel medication or blank, respectively. The SSH technique was conducted to build the forward and reverse subtracted cDNA libraries using the PCR-Select cDNA Subtraction kit. The differentially expressed ESTs were screened and positive clones were isolated from the libraries for bioinformatic analysis．Results Thirty-nine positive clones were isolated from two subtracted cDNA libraries, including 22 from the forward library and 17 from the reverse library. The analysis revealed that the ESTs were mainly responsible for coding enzymes and proteins associated with protein synthesis and degradation. Conclusion The subtracted cDNA libraries before and after praziquantel treatment for S. japonicum were successfully constructed, laying a solid foundation for further research into the molecular mechanisms of this medication therapy.

Key words: Adult Schistosoma japonicum, Praziquantel, Suppression subtractive hybridization, Differentially expressed sequences