Abstract:
The present invention provides a recombination adenovirus including regulated derivatives of tumor-targeting trans-splicing ribozyme and a purpose thereof. The present invention includes a promotor and a ribozyme-purpose gene expression cassette. The expression cassette connects splicing donor/splicing acceptor sequence (SD/SA sequence) to the 5′ end of the ribozyme-purpose gene expression cassette and Woodchuck hepatitis virus posttranscriptional regulatory element (WPRE) to the 3′ end.
Abstract:
PURPOSE: A cancer-specific gene therapeutic agent using microRNA is provided to regulate expression of an expression vector during post-transcription and to reduce side effects. CONSTITUTION: An expression vector contains a promoter, a trans-splicing ribozyme coding DNA which is operatively linked with the promoter and acts in a cancer-specific gene; and a microRNA target sequence coding DNA. The expression vector additionally contains a therapeutic gene or reporter gene. The cancer-specific gene is hTERT(human telomerase reverse transcriptase). The ribozyme is trans-splicing group I intron ribozyme which specifically targets hTERT mRNA. The reporter gene is firefly luciferase gene or renillar luciferase. The promoter is a promoter of PEPCK(phosphoenolpyruvate carboxykinase) gene. The expression vector contains a base sequence selected from sequence numbers 4-9. A pharmaceutical composition for anti-cancer contains the expression vector as an active ingredient.
Abstract:
PURPOSE: A novel RNA aptamer having anti-cancer effects and a pharmaceutical composition for treating cancers are provided to be used for diagnosing or treating cancers in which proteins are expressed. CONSTITUTION: A novel RNA aptamer combines with Lin28 or Lin28B protein. The RNA aptamer is selected from a group consisting of nucleotide sequence described in the sequence number 1(SEQ ID NO:1)-29. The cancer diagnostic kit includes the RNA aptamer. The cancer diagnostic kit additionally includes a container for performing and analyzing buffer solutions and detection. A pharmaceutical composition for treating cancers includes RNA aptamer as an active ingredient. The pharmaceutical composition for treating cancers additionally includes a pharmaceutically allowed carrier. A screening method of gene fragment which interacts with Lin28 or Lin28B comprises the following steps: withdrawing common base sequence which is included in the RNA aptamer; searching new gene fragment which includes the common sequence; and selecting the gene fragment which interacts with the Lin28 or Lin28B.
Abstract:
본 발명은 단 염기 변이 전사체를 특이적으로 인지할 수 있는 트랜스-스플라이싱 그룹 I 리보자임에 관한 것으로서, 더욱 상세하게는 Kras 유전자의 12번째 코돈의 단 염기 변이 Ras RNA를 특이적으로 인식하여 치환할 수 있는 트랜스-스플라이싱 그룹 I 리보자임에 관한 것이다. 본 발명의 리보자임은 단 염기 변이된 유전자 전사체를 정상 유전자 전사체와 구별하여 특이적으로 인식하므로, 이러한 리보자임을 이용하여 돌연변이 전사체를 발현하는 암세포를 특이적으로 치료 및 진단이 가능하다. 단 염기 변이, 트랜스-스플라이싱 그룹 I 리보자임, Kras 유전자