Composition comprising inhibitors for expression or activity of TIP41 as a target gene of TRAIL sensitizer for the prevention and treatment of cancer

국

Composition for enhancing TRAIL sensitivity comprising inhibitors for expression or activity of TIP４１ as a target gene of TRAIL sensitizer

본 발명은 TIP41 단백질의 발현 또는 활성 억제제를 함유하는 TRAIL 감수성 증진용 조성물에 관한 것으로, 더욱 상세하게는 TRAIL 내성을 보이는 간암 세포주에 TIP41 siRNA와 TRAIL을 처리하였을 때, 암세포주 특이적 세포사멸이 유도되며, 간암뿐만 아니라, TRAIL 내성이 있는 폐암 및 대장암에서도 세포사멸을 유도하고, 동물실험을 통해 종양의 크기 감소 및 암세포의 사멸을 유도하며, 이러한 사멸이 TIP41 발현억제로 인한 MKK7/JNK 전달경로 활성에 기인됨을 밝혔으므로, TIP41 단백질 발현 또는 활성 억제제의 조성물을 암의 예방 및 치료용 또는 항암 보조제로 유용하게 사용될 수 있다.국

Composition comprising expression or activity inhibitors of TIP41 for the prevention and treatment of cancer

국

Composition comprising expression or activity inhibitors of TIP41 for the prevention and treatment of cancer

국

Composition comprising expression or activity inhibitors of TIP41 for the prevention and treatment of cancer

The present invention relates to a pharmaceutical composition, including inhibitors for expression or activity of TIP41 protein, for prevention and treatment of cancer. When the liver cancer cell lines, showing resistance to TRAIL, are treated with TIP41 siRNA and TRAIL, apoptosis is induced in cancer cell. The same effect is found in cases of lung cancer and colon cancer with resistance against TRAIL. Moreover, this induction of apoptosis by TIP41 siRNA and TRAIL was confirmed in tumor xenograft, which was injected with Huh7 liver cancer cells and then was subjected to TIP41 siRNA transfection and TRAIL treatment. In addition, it was confirmed through animal experiments in which the tumor size has reduced and apoptosis was induced by treatment with TIP41 siRNA and TRAIL. Of note, MKK7/JNK pathway was confirmed to mediate the apoptosis induced by the application of TIP41 siRNA and TRAIL. The apoptosis were verified to be caused by the activation of MKK7/JNK signaling pathway. Taken together, the present invention provide the strong evidence that the pharmaceutical composition, including inhibitors for TIP41 expression or activity can be used for cancer prevention and treatment as well as an anti-cancer adjuvant. Taken together, the pharmaceutical composition comprising inhibitors for expression or activity of TIP41 protein may be used for prevention and treatment of cancer or as an anti-cancer adjuvant.국

Composition comprising expression or activity inhibitors of TIP41 for the prevention and treatment of cancer

국

A GASTRIC CARCINOMA GENE ZNF312B, A PROTEIN TRANSLATED FROM THE GENE, AND A DIAGNOSTIC KIT AND A SCREENING METHOD FOR ANTICANCER AGENTS USING THE SAME

The present invention relates to a diagnostic marker containing ZNF312b gene and the fragment thereof, a diagnostic method for stomach cancer and a screening method for stomach cancer inducers or inhibitors using the same. ZNF312b gene expression is specifically increased in stomach cancer. And the over-expression or the under-expression of the gene affects activation or inhibition of cell proliferation and tumor formation of a stomach cancer cell line and cell proliferation signal transduction system as well to induce stomach cancer at last. Therefore, ZNF312b marker gene can be effectively used for diagnosis of stomach cancer, construction of a stomach cancer animal model, prevention and treatment of stomach cancer and development of a stomach cancer specific anticancer agent.국