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RISS 인기검색어
- 검색키워드
- 주제어 : Isodon serra (검색결과 2 건)
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마윤주,김상태 한국자연보호학회 2014 한국자연보호학회지 Vol.8 No.2
We observed the pollen grains and fruits of six Isodon taxa distributed in Korea using a light microscope and a scanning electron microscope. The muri thickness on the surface of the pollen grains distinguishes Isodon serra from other taxa: the thickness of I. serra is ca. 0.6 μm, while the thicknesses of other taxa are 0.37~0.49 μm. I. inflexus var. canescens has a relatively nutlet small (about 0.93×0.83 mm) compared to other Korean Isodon taxa (about 1.15~1.37×1.02~1.17 mm). Characteristically, a nutlet of I. inflexus var. microphyllus has non-glandular hairs distributed all over its surface. However, I. serra has non-glandular hairs distributed only on the top of the nutlet while it has glandular hairs broadly distributed over the entire nutlet. We suggested that these characters of the pollen and fruit surfaces can be included in the key to Korean Isodon as diagnostic characters to distinguish the above taxa from other Korean taxa.
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( Eun Seo Bae ),( Young-mi Kim ),( Dong-hwa Kim ),( Woong Sub Byun ),( Hyen Joo Park ),( Young-won Chin ),( Sang Kook Lee ) 한국응용약물학회 2020 Biomolecules & Therapeutics(구 응용약물학회지) Vol.28 No.5
Colorectal cancer (CRC) is one of the most malignant type of cancers and its incidence is steadily increasing, due to life style factors that include western diet. Abnormal activation of canonical Wnt/β-catenin signaling pathway plays an important role in colorectal carcinogenesis. Therefore, targeting Wnt/β-catenin signaling has been considered a crucial strategy in the discovery of small molecules for CRC. In the present study, we found that Nodosin, an ent-kaurene diterpenoid isolated from Isodon serra, effectively inhibits the proliferation of human colon cancer HCT116 cells. Mechanistically, Nodosin effectively inhibited the overactivated transcriptional activity of β-catenin/T-cell factor (TCF) determined by Wnt/β-catenin reporter gene assay in HEK293 and HCT116 cells. The expression of Wnt/β-catenin target genes such as Axin2, cyclin D1, and survivin were also suppressed by Nodosin in HCT116 cells. Further study revealed that a longer exposure of Nodosin induced the G<sub>2</sub>/M phase cell cycle arrest and subsequently apoptosis in HCT116 cells. These findings suggest that the anti-proliferative activity of Nodosin in colorectal cancer cells might in part be associated with the regulation of Wnt/β-catenin signaling pathway.
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