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中国中医科学院 中药研究所, 北京 100700
席苑,在读硕士,从事中药药理学研究,E-mail:xy2725602289@126.com
叶祖光,研究员,博士生导师,从事中药药理与毒理学研究,E-mail:yezuguang@sina.com
张广平,副研究员,从事中药药理与毒理学研究,E-mail:iamzgp@163.com
网络出版日期:2020-04-20,
纸质出版日期:2020-06-20
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席苑,张海静,高云航等.汉防己甲素对TGF-β1诱导的MRC-5细胞中Col-I及FN表达的影响[J].中国实验方剂学杂志,2020,26(12):94-99.
XI Yuan,ZHANG Hai-jing,GAO Yun-hang,et al.Effect of Tetrandrine on Col-I and FN in TGF-β1-induced MRC-5 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(12):94-99.
席苑,张海静,高云航等.汉防己甲素对TGF-β1诱导的MRC-5细胞中Col-I及FN表达的影响[J].中国实验方剂学杂志,2020,26(12):94-99. DOI: 10.13422/j.cnki.syfjx.20201237.
XI Yuan,ZHANG Hai-jing,GAO Yun-hang,et al.Effect of Tetrandrine on Col-I and FN in TGF-β1-induced MRC-5 Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(12):94-99. DOI: 10.13422/j.cnki.syfjx.20201237.
目的
2
探讨汉防己甲素(Tet)对人转化生长因子-
β
1
(TGF-
β
1
)刺激的人胚肺成纤维细胞MRC-5的影响。
方法
2
不同质量浓度的TGF-
β
1
(0,2.5,5,10,20,40 μg·L
-1
)作用于MRC-5细胞,应用细胞增殖与毒性检测法(CCK-8)检测TGF-
β
1
对MRC-5细胞的增殖毒性,蛋白免疫印迹法(Western blot)检测MRC-5细胞中
α
-平滑肌肌动蛋白(
α
-SMA)及波形蛋白(Vimentin)表达水平的变化,酶联免疫吸附测定法(ELISA)检测MRC-5细胞上清液中I型胶原(Col-I)及纤维黏连蛋白(FN)表达水平的变化,以筛选出TGF-
β
1
活化MRC-5细胞的适宜浓度。结合筛选出的TGF-
β
1
的浓度条件,与不同浓度的Tet(0,2.5,5,10,20,40 μmol·L
-1
)共同作用于MRC-5细胞,再次应用CCK-8法筛选TGF-
β
1
及Tet共培养对MRC-5细胞的安全浓度,Western blot检测MRC-5细胞中
α
-SMA及Vimentin表达水平的变化,ELISA检测MRC-5细胞上清液中Col-I及FN表达水平的变化。
结果
2
与空白组比较,给药24 h时,20 μg·L
-1
及40 μg·L
-1
的TGF-
β
1
对MRC-5细胞有毒性作用(
P
<
0.05),给药48 h时,10,20,40 μg·L
-1
的TGF-
β
1
对MRC-5细胞有毒性作用(
P
<
0.05);加入Tet培养24 h时,对MRC-5细胞的半数抑制浓度(IC
50
)值为14.07 μmol·L
-1
,培养48 h时,IC
50
值为7.51 μmol·L
-1
;与空白组比较,5 μg·L
-1
的TGF-
β
1
刺激MRC-5细胞时,细胞中
α
-SMA, FN及Col-I的相对含量明显升高(
P
<
0.05),Vimentin 相对含量显著升高(
P
<
0.01),10 μg·L
-1
组细胞中
α
-SMA,Vimentin,FN及Col-I的相对含量显著升高(
P
<
0.01);10 μg·L
-1
的TGF-
β
1
与不同浓度的Tet共培养,与TGF-
β
1
组比较,Tet 5 μmol·L
-1
组,细胞中
α
-SMA,Vimentin及FN相对含量显著降低(
P
<
0.01),Col-I相对含量明显降低(
P
<
0.05),Tet 10 μmol·L
-1
组,细胞中
α
-SMA,Vimentin,FN及Col-I的相对含量均显著降低(
P
<
0.01)。
结论
2
TGF-
β
1
能够升高MRC-5细胞中Col-I,FN等细胞外基质的水平,而Tet可以有效抑制这种变化的发生,提示Tet可能对肺纤维化的形成中,成纤维细胞大量分泌细胞外基质的过程有抑制作用。
Objective
2
To investigate the effect of tetrandrine on transforming growth factor-
β
1
(TGF-
β
1
)stimulated MRC-5 cells.
Method
2
Different concentrations of TGF-
β
1
(0
2.5
5
10
20
40 μg·L
-1
) were applied to MRC-5 cells. Proliferation toxicity of TGF-
β
1
to MRC-5 was detected by cell counting kit-8 (CCK-8) method. Detection of alpha smooth muscle actin (
α
-SMA) and Vimentin's expression levels in MRC-5 by Western blot. Detection of changes of collagen I(Col-I) and fibronectin (FN)'s expression levels in MRC-5 supernatants by enzyme linked immunosorbent assay(ELISA) kit. And the appropriate concentration of TGF-
β
1
activated MRC-5 cells was screened. The appropriate concentration of TGF-
β
1
and different concentrations of Tet (0
2.5
5
10
20
40 μmol·L
-1
) were applied to MRC-5 cells
and CCK-8 method was used to screen safe concentration again. Western blot was used to detect changes in
α
-SMA and Vimentin expression levels in MRC-5 cells
and ELISA method to detect changes in Col-I and FN in MRC-5 cell supernatant.
Result
2
Compared with the blank group
20,40 μg·L
-1
of TGF-
β
1
had toxic effects on MRC-5 cells at 24 hours (
P
<
0.05)
and 10,20,40 μg·L
-1
of TGF-
β
1
had toxic effects on MRC-5 cells at 48 h (
P
<
0.05).When Tet is added for 24 h
the half inhibitory concentration (IC
50
) value was 14.07 μmol·L
-1
and when cultured for 48 h
the IC
50
value was 7.51 μmol·L
-1
. Compared with the blank group
the relative contents of
α
-SMA
FN and Col-I in the 5 μg·L
-1
of TGF-
β
1
group were obviously increased (
P
<
0.05)
and the relative contents of Vimentin were significantly increased (
P
<
0.01)
and the relative contents of FN and Col-I
α
-SMA and Vimentin in 10 μg·L
-1
group were significantly increased (
P
<
0.01). 10 μg·L
-1
of TGF-
β
1
was co-cultured with Tet at different concentrations. Compared with the TGF-
β
1
group
the relative levels of
α
-SMA
Vimentin and FN in the 5 μmol·L
-1
of Tet group were significantly reduced (
P
<
0.01)
and the relative levels of Col-I were obviously reduced (
P
<
0.05). In the Tet 10 μmol·L
-1
group
the relative contents of the
α
-SMA
Vimentin
FN and Col-I were significantly reduced (
P
<
0.01).
Conclusion
2
TGF-
β
1
can increase the levels of Col-I
FN and other extracellular matrices in MRC-5 cells
and Tet can effectively inhibit the occurrence of this change. It is suggested that Tet may inhibit secreting extracellular matrix of fibroblasts in the formation of pulmonary fibrosis.
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