Selective permeabilization of cervical cancer cells to an ionic DNA-binding cytotoxin by activation of P2Y receptors.

Selective permeabilization of cervical cancer cells to an ionic DNA-binding cytotoxin by activation of P2Y receptors.
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DOI:
10.1016/j.febslet.2015.04.044
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发表时间:
2015-06-04
期刊:
影响因子:
3.5
通讯作者:
Samways DS
Samways DS
中科院分区:
生物学3区
文献类型:
--
作者:
Bukhari M;Deng H;Jones N;Towne Z;Woodworth CD;Samways DS

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已知细胞外ATP可使某些细胞类型透化至多原子阳离子,如YO-PRO 1。在这里,我们报告,细胞外应用ATP刺激快速吸收和积累,否则弱膜渗透性荧光DNA结合细胞毒素,Hoechst 33258,进入宫颈癌细胞。虽然ATP刺激Hoechst 332摄取在20-70%的细胞从7个宫颈癌细胞系,它始终刺激摄取不到8%的宫颈上皮细胞从正常的转化区和外宫颈组织的10名患者。ATP诱发的Hoechst 33258摄取不依赖于离子型P2 X受体,但依赖于P2 Y受体的激活。因此,我们在这里表明,宫颈癌细胞可以选择性地诱导采取和积累离子细胞毒素暴露于细胞外ATP。
Extracellular ATP is known to permeabilize certain cell types to polyatomic cations like YO-PRO1. Here, we report that extracellularly applied ATP stimulated rapid uptake and accumulation of an otherwise weakly membrane permeable fluorescent DNA-binding cytotoxin, Hoechst 33258, into cervical cancer cells. While ATP stimulated Hoechst 332uptake in 20–70% of cells from seven cervical cancer cell lines, it consistently stimulated uptake in less than 8% of cervical epithelial cells obtained from the normal transformation zone and ectocervix tissue of 10 patients. ATP-evoked Hoechst 33258 uptake was independent of ionotropic P2X receptors, but dependent on activation of P2Y receptors. Thus, we show here that cervical cancer cells can be selectively induced to take up and accumulate an ionic cytotoxin by exposure to extracellular ATP.
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