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Redox factor -1이 암진행에 미치는 영향

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Author(s)
정성미
Issued Date
2009
Abstract
APE/Ref-1는 redox signaling, DNA repair, 세포 자살 및 세포 증식에 포함되는 다기능 단백질이라고 알려져 있으며, APE1는 여러 암에서 높게 발현되어있다. 그러나 아직까지 암 진행과정에서 APE/Ref-1의 역할은 명확하지 않다. 본 저자는 암 진행과정에 있어서 APE/Ref-1의 기능에 대한 분자적 기작을 규명하고자 한다. APE/Ref-1에 의해 발현에 영향을 받는 유전자들을 찾기 위해 DNA microarray를 시행했으며 종양형성과 이동에 관여하는 JAG1이 관여되었음을 보였다. APE/Ref-1을 과발현시킨 섬유아세포에서 JAG1관련 유전자들이 발현되었고, APE발현을 억제하는 siRNA처리 후, JAG1관련유전자들의 발현과 활성이 급격히 감소함을 확인했다. 또한 신경교종세포의 성장과 이동에도 관여하는지 조사하기 위해 세포증식검사와 이동검사를 시행하였다. 그 결과 APE가 JAG1의 발현을 조절함으로써 세포증식과 이동에 관여하고 있음을 알게 되었고 세포주기에서 DNA합성단계인S-phase에 영향을 미친다는 것을 보였다. APE가 JAG1의 발현을 조절한다는 본 저자의 연구는 새로운 항암제 개발과 진단 및 치료에 대한 정보를 제공 함으로써 종양연구에 기여할 것이라 사료된다.|APE/Ref-1 has been known the multifunctional protein which is involved in redox signaling, DNA repair, apoptosis and cell proliferation. In the previous studies, APE1 or JAG1 are high expressed in a variety of cancer. However, their roles of cancer are not clear, yet. Here, for the first time, I’d like to identify the function and the correlation between APE/Ref-1 and JAG1 in cancer. To investigate whether APE/Ref-1 controlled JAG1, I checked JAG1 expression in both APE/Ref-1-overexpressed or JAGGED1-downregulated cell line. I found that APE/Ref-1 regulated JAG1 expression. Recently, it is reported that cell proliferation is partially dependent on JAG1/Notch regulation. So, I investigated the correlation among APE/Ref-1, JAG1/Notch1 and Hes1. In APE/Ref-1 overexpressing cells, JAG1 and Notch1 activities were increased. Also, in JAG1-downregulated cells, their activities were reduced. Furthermore, in vitro cell migration is dependent on both of APE/Ref-1 and JAG1. In conclusion, APE/Ref-1 may regulate cell proliferation and migration through JAG1/Notch1 downstream effector, Hes1. I suggest that these finding may be contributed to provide new insight to the develop new anticancer therapies.
Alternative Title
The effect of Redox factor-1 on the cancer progression
Alternative Author(s)
Jung, Sung Mi
Affiliation
일반대학원
Department
일반대학원 생물신소재학과
Advisor
장인엽
Awarded Date
2010-02
Table Of Contents
CONTENTS
Contents........................................................................................................................................ⅰ
List of Figures.............................................................................................................................. iii

ABSTRACT...................................................................................................................1
I. INTRODUCTION...................................................................................................2
II. MATERIALS AND METHODS......................................................................4
1. Cell culture................................................................................................................................4
2. siRNA knockdown of Ape1/Ref-1 and JAG1……………………………………………………4
3. Immunoblot analysis........................................................................................................4
4. RT-PCR analysis.............................................................................................................5
5. MTT (3-94,5-dimethylthiazole-2-yl)-2,5-diphrnyl tetrazolium bromide) assay.........................6
6. Flow cytometric analysis..................................................................................................6
7. In vitro Migration assay using transwell.............................................................................6
8. Statistical analysis……………………………………………………………………………..…7

III. RESULTS
1. Genes induced with APE by DNA microarray screening………………………………………8
2. APE/Ref-1 is an upstream of JAG1…………………………………………………………….8
3. Hes1, the effect of Notch1 induces cell migration………………………………………………8
4. Expression of APE1, JAG1, NotchIC and Notch3IC in glioma cell lines…………………………9
5. Down-regulation of APE1 reduces cellular proliferative ability in M059K……………………..9
6. Down-regulation of APE1 reduces cellular migration ability in M059K………………………10
7. APE1 and JAG1 siRNA induce S phase arrest in M059K cells……………………………….10

IV. DISCUSSION.......................................................................................................11
V. REFERENCES......................................................................................................14
Figure legends.............................................................................................................20
KOREAN ABSTRACT...........................................................................................35
Degree
Master
Publisher
조선대학교
Citation
정성미. (2009). Redox factor -1이 암진행에 미치는 영향.
Type
Dissertation
URI
https://oak.chosun.ac.kr/handle/2020.oak/8411
http://chosun.dcollection.net/common/orgView/200000239187
Appears in Collections:
General Graduate School > 3. Theses(Master)
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