
浏览全部资源
扫码关注微信
纸质出版:2011
移动端阅览
胡文艳,高建,李璇,田绿,彭湃澜,王峰,高昌益,任红,唐开福.细胞黏附对干扰素、5-氟尿嘧啶诱导细胞凋亡的影响[J].陆军军医大学学报(原第三军医大学学报),2011,33(02):124-127.
Hu Wenyan,Gao Jian,Li Xuan,Tian Lu,Peng Pailan,Wang Feng,Gao Changyi,Ren Hong,Tang Kaifu.Effects of cell adhesion on interferon and 5-fluorouracil induced cell apoptosis in vitro[J].J Amry Med Univ (J Third Mil Med Univ),2011,33(02):124-127.
胡文艳,高建,李璇,田绿,彭湃澜,王峰,高昌益,任红,唐开福.细胞黏附对干扰素、5-氟尿嘧啶诱导细胞凋亡的影响[J].陆军军医大学学报(原第三军医大学学报),2011,33(02):124-127. DOI:
Hu Wenyan,Gao Jian,Li Xuan,Tian Lu,Peng Pailan,Wang Feng,Gao Changyi,Ren Hong,Tang Kaifu.Effects of cell adhesion on interferon and 5-fluorouracil induced cell apoptosis in vitro[J].J Amry Med Univ (J Third Mil Med Univ),2011,33(02):124-127. DOI:
目的 探讨细胞黏附作用对干扰素、5-氟尿嘧啶(5-Fu)诱导细胞凋亡的影响。 方法 采用HepG
2
、HEK293细胞株,常规96孔板培养细胞,分为空白不加药(A组)、多聚赖氨酸包被预处理+贴壁后加药(B组)、贴壁后加药(C组)、未贴壁就加药(D组)、未贴壁就加药和Fn抗体(E组)。选用干扰素、5-Fu分别作用各组细胞,MTT法测定各组增殖抑制率和DNA Fragmentation ELISA测定凋亡率,Western blot检测干扰素诱导各组PKR蛋白水平的表达。 结果 经多聚赖氨酸包被预处理后,细胞对药物的敏感性减弱,MTT法显示抑制率:干扰素作用G
2
细胞,B、C组抑制率分别为(27.24±31.77)%、(39.04±14.88)%(P0.05);5-Fu作用G
2
细胞,B、C组抑制率分别为(30.61±11.26)%、(32.94±20.93)%(P0.05);干扰素作用293细胞,B、C组抑制率分别为(32.02±23.48)%、(46.22±25.20)%(P0.05);5-Fu作用293细胞,B、C组抑制率分别为(14.07±21.91)%、(31.61±31.49)%(P0.05)。DNA Fragmentation ELISA示凋亡率:干扰素作用G
2
细胞,B、C组凋亡率分别为(0.425±0.038)、(0.535±0.039)(P0.05);5-Fu作用G
2
细胞,B、C组凋亡率分别为(0.337±0.016)、(0.417±0.075)(P0.05);干扰素作用293细胞,B、C组凋亡率分别为(0.394±0.033)、(0.499±0.018)(P0.05);5-Fu作用293细胞,B、C组凋亡率分别为(0.406±0.024)、(0.504±0.069)(P0.05)。而阻断纤维黏连蛋白(Fn),细胞对药物的敏感性增强,MTT法显示抑制率:干扰素作用G
2
细胞,D、E组抑制率分别为(49.90±11.90)%、(66.86±24.66)%(P0.05); 5-Fu作用G
2
细胞,D、E组抑制率分别为(45.96±21.27)%、(68.76±31.41)%(P0.05);干扰素作用293细胞,D、E组抑制率分别为(58.98±32.96)%、(76.72±21.69)%(P0.05);5-Fu作用293细胞,D、E组抑制率分别为(47.02±26.84)%、(62.60±29.79)%(P0.05)。DNA Fragmentation ELISA示凋亡率:干扰素作用G
2
细胞,D、E组凋亡率分别为(0.699±0.023)、(0.801±0.040)(P0.05);5-Fu作用G
2
细胞,D、E组凋亡率分别为(0.581±0.023)、(0.721±0.027)(P0.05);干扰素作用293细胞,D、E组凋亡率分别为(0.555±0.011)、(0.686±0.040)(P0.05);5-Fu作用293细胞,D、E组凋亡率分别为(0.590±0.062)、(0.704±0.011)(P0.05)。干扰素诱导各组PKR蛋白表达水平中,空白对照组分别较其他组显著下调(P0.05),而B、C、D、E组间表达差异无显著性(P0.05)。 结论 干扰细胞-基质的黏附作用可以增强干扰素、5-Fu的敏感性,从而使细胞增殖受抑,凋亡增加;干扰素可增强PKR磷酸化水平,但并不受黏附作用的影响。
Objective To investigate the effects of cell adhesion on interferon (IFN) and 5-fluorouracil (FU) induced cell apoptosis. Methods HepG
2
and HEK293 cells were classified into the 5 groups. Cells in group A were seeded into blank plates and not treated. Cells in group B were seeded into polylysine precoated plates followed by 5-Fu (250 μg/ml 4.2 μl) or IFN (500 U/ml 1.7 μl) treatment in 6 h after seeding. Cells in group C were seeded into blank plates and treated with 5-Fu or IFN in 6 h after seeding. Cells in group D were seeded into blank plates and treated with 5-Fu or IFN immediately after seeding. Cells in group E were seeded into blank plates and treated with anti-fibronectin antibody (500 μg/ml
1 μl) immediately after seeding
and then treated with 5-Fu or IFN in 6 h after seeding. Cell proliferation was detected by MTT assay
and cell apoptosis was detected by DNA fragmentation ELISA assay. Western blotting was used to detected PKR content in IFN-induced groups. Results Polylysine precoating plates decreased the drug sensitivity of cells. MTT assay showed that IFN on HepG
2
cells
the proliferation of B and C groups was inhibited by (27.24±31.77)% and (39.04±14.88)% respectively (P0.05); 5-Fu on HepG
2
cells
the proliferation of B and C groups was inhibited by (30.61±11.26)% and (32.94±20.93)% respectively (P0.05); IFN on 293 cells
the proliferation of B and C groups was inhibited by (32.02±23.48)% and (46.22±25.20)% respectively (P0.05); 5-Fu on 293 cells
the proliferation of B and C groups was inhibited by (14.07±21.
91)% and (31.61±31.49)% respectively (P0.05). DNA fragmentation ELISA indicated IFN on HepG
2
cells
the apoptosis of B and C groups was (0.425±0.038) and (0.535±0.039) respectively (P0.05); 5-Fu on HepG
2
cells
the apoptosis of B and C groups was (0.337±0.016) and (0.417±0.075) respectively (P0.05); IFN on 293 cells
the apoptosis of B and C groups was (0.394±0.033) and (0.499±0.018) respectively (P0.05); 5-Fu on 293 cells
the apoptosis of B and C groups was (0.406±0.024) and (0.504±0.069) respectively (P0.05). However
blocking the antifibronectin antibody (Fn) enhanced the drug sensitivity to cells. MTT assay showed that IFN on HepG
2
cells
the proliferation of D and E groups was inhibited by (49.90±11.90)% and (66.86±24.66)% respectively (P0.05); 5-Fu on HepG
2
cells
the proliferation of D and E groups was inhibited by (45.96±21.27)% and (68.76±31.41)% respectively (P0.05); IFN on 293 cells
the proliferation of D and E groups was inhibited by (58.98±32.96)% and (76.72±21.69)% respectively (P0.05); 5-Fu on 293 cells
the proliferation of D and E groups was inhibited by (47.02±26.84)% and (62.60±29.79)% respectively (P0.05). DNA fragmentation ELISA indicated IFN on HepG
2
cells
the apoptosis of D and E groups was (0.699±0.023) and (0.801±0.040) respectively (P0.05); 5-Fu on HepG
2
cells
the proliferation of D and E groups was (0.581±0.023) and (0.721±0.027) respectively (P0.05); IFN on 293 cells
the proliferation of D and E groups was (0.555±0.011) and (0.686±0.040) respectively (P0.05); 5-Fu on 293 cells
the proliferation of D and E groups was (0.590±0.062) and (0.704±0.011) respectively (P0.05). Western blot analysis showed PKR was decreased in blank group compared with the other groups respectively (P0.05)
however
there was no significant difference among B
C
D and E groups (P0.05). Conclusion Repression of cell adhesion enhances the sensitivity of cells to IFN and 5-Fu treatment. IFN enhances the phosphorylation of PKR
but has n
o relationship with cell adhesion.
0
浏览量
0
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621