• 沒有找到結果。

行政院國家科學委員會專題研究計畫 成果報告

N/A
N/A
Protected

Academic year: 2021

Share "行政院國家科學委員會專題研究計畫 成果報告"

Copied!
5
0
0

加載中.... (立即查看全文)

全文

(1)

行政院國家科學委員會專題研究計畫 成果報告

Heme oxygenase 1 (Hsp32) 在無機砷與其代謝產物對血管 內皮與平滑肌細胞增生之角色探討(2/2)

計畫類別: 整合型計畫

計畫編號: NSC93-2321-B-038-009-

執行期間: 93 年 08 月 01 日至 94 年 07 月 31 日 執行單位: 臺北醫學大學生藥學研究所

計畫主持人: 陳彥州 共同主持人: 沈杏娟 計畫參與人員: 吳金燕

報告類型: 完整報告

處理方式: 本計畫可公開查詢

中 華 民 國 94 年 10 月 3 日

(2)

Heme oxygenase 1 (Hsp32) 在無機砷與其代謝產物對血管內皮與平 滑肌細胞增生之角色探討(2/2)

計畫類別: 整合型計畫

計畫編號: NSC 93-2321-B-038-009

執行期間: 93 年 08 月 01 日 至 94 年 07 月 31 日 執行單位: 臺北醫學大學生藥學研究所

計畫主持人: 陳彥州

共同主持人: 沈杏娟 計畫參與人: 吳金燕

(3)

Results of the present project:

Fig.1 Both As+3 and MMA+3, but not As+5, DMA+3, MMA+5, DMA+5, induce apoptosis in embryonic fibroblasts.

Fig. 2 Both As+3 and MMA+3, but not As+5, DMA+3, MMA+5, DMA+5, induce HO-1 protein expression and HSP90 protein procession with reducing telomerase activity in embryonic fibroblasts.

Fig. 3. NAC and catalase prevention of As+3 and MMA+3-induced HO-1 and HSP90 protein procession with attenuation of telomerase reduction.

MTT (OD 600 nm)

0.0 0.2 0.4 0.6 0.8

** **

**

**

## ##

## ##

C + NAC CAT + NAC CAT

As+3 MM A+3

M 1 pe rc en ta g e (% )

0 10 20 30 50 60

CON + NAC CAT + NAC CAT

As+3

MMA+3

**

**

**

##

##

##

##

(4)

Fig. 4 NAC prevention of As+3 and MMA+3-induced mitochondrial dysfunction in embryonic fibroblast.

Fig. 5 DPI prevention of As+3 and MMA+3-induced cytotoxicity via blocking telomerse activation.

Fig. 6 Inhibition of HSP90 activity potentiates As+3 and MMA+3-inhibited telomerase activity by TRAP assay.

M1 percentage (%)

0 10 20 30 40 50 60 70

CON + 10 20 + 10 20

As+3

NAC NAC

MMA+3

**

**

##

##

##

##

A M

MTT assay (OD 600)

0.0 0.2 0.4 0.6 0.8 1.0

CON GA + GA + GA

As+3 MMA+3

**

** **

**

##

##

(5)

Fig. 7. Activation of JNKs involves in As+3 and MMA+3-induced cell death in embryonic fibroblasts.

In conclusion

We provide first evidences to indicated that different biological effects of arsenics in embryonic fibroblasts. Induction of HO-1 gene expression at both mRNA and protein level and HSP90 protein procession was identified in As+3 and MMA-3-treated cells.

Data of pharmacological study showed that activation of JNKs via inducing protein phosphorylation and HSP90 but not HO-1 protein might be involved in the action of As+3 and MMA+3. In conclusion, As+3 and MMA+3 are active in inducing cell death via blocking telomerase activity, and expression of HO-1 and HSP90 protein procession is detected.

M TT a ss ay ( O D 600 )

0.0 0.2 0.4 0.6 0.8

CON

**

**

** **

**

**

##

##

PDSB SPLY + PDSBSPLY+ PDSBSPLY

** ** **

**

As+3 MMA+3

MTT assay (OD 600)

0.0 0.2 0.4 0.6 0.8 1.0 1.2

CON +

As+3 (40 µM) MMA+3 (20 µM)

**

DFx SnPP Hb DFxSnPPHb + DFxSnPPHb

**

** ** ** ** ** **

*

MTT ass ay (OD 600 nm)

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7

CON pcDNA HO-1/A HO-1/B CON

CON

CON CON pcDNApcDNApcDNApcDNA HO-1/A

HO-1/A

HO-1/A

HO-1/A HO-1/B

HO-1/B

HO-1/B

HO-1/B

MMA+3 (20 µM) As+3

(80 µM)

MMA+3 (40 µM) As+3

(40 µM)

**

****

**

** **

****

****

**

**

**

**

**

**

數據

Fig. 3. NAC and catalase prevention of As+3 and MMA+3-induced HO-1 and HSP90  protein procession with attenuation of telomerase reduction
Fig. 4 NAC prevention of As+3 and MMA+3-induced mitochondrial dysfunction in  embryonic fibroblast
Fig. 7.    Activation of JNKs involves in As+3 and MMA+3-induced cell death in  embryonic fibroblasts

參考文獻

相關文件

Thus, the proposed approach is a feasible and effective method for process parameter optimization in MIMO plastic injection molding and can result in significant quality and

The final results of experiment show that the performance of DBR system declines when labor utilization increases and the CCR-WIP dispatching rule facilitate to

(1995), Land Mosaics: The Ecology of Landscape Ecology and Regions, Cambridge: Cambridge University Press. Weaver.(1979),Territory

二、 本計畫已將部分研究結果整理,發表於國際研討會(Chan, Y.-H., Lin, S.-P., (2010/7), A new model for service improvement design, The 2010 International Conference

This project is the optical electro-mechanic integration design and manufacturing research of high magnifications miniaturized size zoom lens and novel active high accuracy laser

Florida, R.,2002, The Rise of the Creative Class and How It's Transforming Work, Leisure, Community and Everyday Life, Basic Books, New York. (Ed), Toward Scientific

Some efficient communication scheduling methods for the Block-Cyclic redistribution had been proposed which can help reduce the data transmission cost.. The previous work [9,

With the advancement in information technology and personal digital mobile device upgrade, RFID technology is also increasingly common use of the situation, but for