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.