상동나무(Sageretia thea) 잎과 가지추출물의 대장암과 폐암세포의 β-catenin 분해 유도 활성
Effect of the Extracts from the Leaves and Branches of Sageretia thea on β-catenin Proteasomal Degradation in Human Colorectal and Lung Cancer Cells
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초록
이상의 연구 결과로 미루어 볼 때, 상동나무 가지 (STB)와 잎(STL)은 GSK3β와 ROS에 의존하지 않는 β-catenin의 분해 유도를 통해 대장암 및 폐암세포의 생육을 억제하는 것으로 나타났다. 본 결과는 상동나무 가지와 잎의 항암을 위한 대체보완소재 및 천연 항암제 개발을 위한 소재로 활용이 가능할 것으로 판단된다. 그러나 추가적 연구를 통해 상동나무 가지와 잎의 β- catenin의 분해 유도 관련 기전연구와 항암 활성물질의 분석연구가 필요할 것으로 사료된다.
Abstract
In this study, we evaluated the effect of branch (STB) and leave (STL) extracts from Sageretia thea on β-catenin level in human colorecal cancer cells, SW480 and lung cancer cells, A549. STB and STL dose-dependently suppressed the growth of SW480 and A549 cells. STB and STL decreased β-catenin level in both protein and mRNA level. MG132 decreased the downregulation of β-catenin protein level induced by STB and STL. However, the inhibition of GSK3β by LiCl or ROS scavenging by NAC did not block the reduction of β-catenin protein by STB and STL. Our results suggested that STB and STL may downregulate β-catenin protein level independent on GSK3β and ROS. Based on these findings, STB and STL may be a potential candidate for the development of chemopreventive or therapeutic agents for human colorectal cancer and lung cancer.
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