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5'-Nitro-Indirubinoxime inhibits SGT cell invasion by targeting β1 integrin/Akt signaling pathway

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Author(s)
윤지혜
Issued Date
2009
Abstract
연구배경: 5‘-Nitro-Indirubinoxime은 bis-indole indirubin의 유도체로서, Danggui Longhui Wan의 구성 성분이다. 5‘-NIO는 여러 종양세포에서 강력한 항암효과가 있다. 그러나 5‘-NIO의 항침습 효과는 연구된 바 없다. 이 논문은 타액선암 세포에서 5’-NIO의 항침습 효과를 평가하고자 한다.
실험방법: 타액선암 세포의 생존율을 보기 위해 5‘-NIO 처리 후 MTT assay를 하였고, 세포의 침습과 전이능을 확인하기 위해 wound-scratch, migration과 invasion assay를 시행하였다. MMP-2와 MMP-9, 그리고 이들의 상위신호분자들의 발현을 western blot과 RT-PCR을 하여 확인하였다. 또한, gelatin zymography를 하여 MMP-2와 MMP-9의 분비를 확인하고, β1 integrin의 ligand 중 하나인 type I collagen을 이용하여 adhesion assay를 시행하였다.
실험결과: 5’-NIO는 타액선암 세포에서 농도 의존적으로 세포이동과 침습능 억제효과를 나타내었고, β1 integrin의 발현, FAK, Akt, Erk의 인산화와 MMP-2/-9의 발현이 감소됨을 볼 수 있었다. 또한, MMP-2/-9의 mRNA 발현과 분비가 억제됨을 확인하였고, type I collagen에서 5’-NIO의 농도 의존적으로 타액선암 세포의 부착능력이 감소됨을 규명하였다.
결론: 이러한 결과는 5‘-NIO가 FAK, Akt와 Erk의 인산화, β1 integrin, MMP-2/-9의 발현을 조절함으로 타액선암 세포의 이동과 침습능 억제에 효과적임을 확인하여 타액선암 치료의 또 다른 가능성을 확인하였다.|Background: 5’-nitro-indirubinoxime (5’-NIO) is a derivative of the bis-indole indirubin, an active compound of Danggui Longhui Wan that exhibits anti-leukemic activities. Previously, we have shown that 5’-NIO has potent anti-tumor effect in various human cancer cells. But the potential anti-invasive effect of 5’-NIO in salivary gland tumor has not been studied yet. The goal of this study is to evaluate the anti-invasive action of 5’-NIO in salivary gland adenocarcinoma SGT cells.
Methods: The MTT assay was used to determine the viability of SGT cells after treatment with 5’-NIO. The wound-scratch, migration and invasion assays were applied to determine the effect of 5’-NIO on the migration capacity and invasiveness of SGT cells. Western blot and RT-PCR were performed to evaluate the impacts of 5’-NIO on the expression of MMP-2/-9 and its upstream signaling molecules. The secretions of MMP-2/-9 in culture-conditioned medium were assayed by gelatin zymography and adhesion assay was performed using type І collagen.
Result: 5’-NIO exhibited a dose-dependent inhibitory effect on the invasion and migration of SGT cells. 5’-NIO decreased β1 integrin expression and phosphorylation of FAK, Akt, Erk, and downregulated the expression of MMP-2/-9 in SGT cells. Furthermore, 5’-NIO suppressed MMP-2/-9 mRNA expression and activity.
Conclusion: Taken together, these results suggest that 5’-NIO could effectively inhibit the invasion and migration of human SGT cells by downregulating the expression of β1 integrin and MMP-2/-9 and phosphorylation of FAK, Akt, and Erk.
Alternative Title
β1 integrin/Akt 신호전달을 타겟으로 하는 5'-Nitro-Indirubinoxime의 타액선암 세포 침습 억제 효과
Alternative Author(s)
Yoon Ji Hye
Department
일반대학원 치의공학과
Advisor
윤정훈, 안상건
Awarded Date
2009-08
Table Of Contents
Table of Contents

Table of Contents ···········································································ⅰ
List of Figures ················································································ ⅲ
List of Tables ················································································· ⅳ
Abstract ····························································································ⅴ
국문초록 ·························································································· ⅶ

Ⅰ. Introduction ················································································ 1

Ⅱ. Materials and methods ·························································· 3
1. Cell culture ··············································································· 3
2. Cell proliferation assay ························································· 3
3. Matrigel invasion assay ······················································· 3
4. Wound-scratch assay ·························································· 4
5. Cell migration assay ····························································· 4
6. Western blot analysis ··························································· 4
7. RT-PCR ···················································································· 5
8. Gelatin zymography ······························································ 6
9. Cell adhesion assay ····························································· 6
10. Statistical analysis ································································ 7

Ⅲ. Results ······················································································ 8
1. Effect of 5’-Nitro-Indirubinoxime on SGT cell viability ················································ 8
2. Effect of 5’-NIO on SGT cell invasion and migration ·················································· 8
3. Effect of 5’-NIO on β1 integrin/Akt signaling pathway ··············································· 11
4. Effect of 5’-NIO on MMP-2/-9 secretion ······································································· 12
5. Effect of 5’-NIO on SGT cell adhesion to type I collagen ········································· 13
6. Effect of 5’-NIO on protein expression after type I collagen treatment ·················· 14
7. Effect of 5’-NIO on SGT cell migration after type I collage treatment ··················· 15

Ⅳ. Discussion ·············································································· 17

Ⅴ. References ·············································································· 20
Degree
Master
Publisher
조선대학교 대학원
Citation
윤지혜. (2009). 5’-Nitro-Indirubinoxime inhibits SGT cell invasion by targeting β1 integrin/Akt signaling pathway.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/8202
http://chosun.dcollection.net/common/orgView/200000238264
Appears in Collections:
General Graduate School > 3. Theses(Master)
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