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Sci Rep:WNT信号在人类胚胎癌细胞中的异常激活和对体外培养的短期和长期影响研究

2019-08-30 AlexYang MedSci原创

人类胚胎癌细胞(EC)包括了恶性非精原细胞瘤性生殖细胞瘤(GCTs)的多能干细胞,并代表了胚胎干细胞(ESCs)的恶性成员。尽管WNT/β-连环蛋白信号在EC细胞中的作用研究较少,其在调控成熟和胚胎干细胞中具有作用。最近,有研究人员调查了WNT信号在代表性的多能和非多能人类EC细胞系中的作用。研究发现,EC细胞系表现出了不同水平的WNT信号,并对异常的WNT激活具有不同的响应。WNT信号的短期激活

人类胚胎癌细胞(EC)包括了恶性非精原细胞瘤性生殖细胞瘤(GCTs)的多能干细胞,并代表了胚胎干细胞(ESCs)的恶性成员。尽管WNT/β-连环蛋白信号在EC细胞中的作用研究较少,其在调控成熟和胚胎干细胞中具有作用。

最近,有研究人员调查了WNT信号在代表性的多能和非多能人类EC细胞系中的作用。研究发现,EC细胞系表现出了不同水平的WNT信号,并对异常的WNT激活具有不同的响应。WNT信号的短期激活能够诱导多能EC细胞(NT2和NCCIT)的区别响应,而非多能细胞(TERA1和2102Ep)却不响应且维持了高水平的OCT4和SSEA4表达水平。另外,WNT信号在NCCIT中的长期激活以及TERA1细胞较小程度上导致OCT4表达和SSEA4到SSEA1表面抗原的转变最终能够导致OCT4+/SSEA4?/SSEA1+的出现。铂治疗表明了OCT4+/SSEA4?/SSEA1+ NCCIT细胞表现出了更强烈的化疗抗性。

最后,研究人员指出,他们的发现阐释了GCT和ES的细胞生物学,并强调了WNT信号在人类EC细胞中的角色。

原始出处:

Yaser Atlasi, Rebecca T. van Dorsten, Andrea Sacchetti et al. Ectopic activation of WNT signaling in human embryonal carcinoma cells and its effects in short- and long-term in vitro culture. Sci Rep. 15 Aug 2019

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    2019-09-01 yxch36
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    2019-09-01 ailian1202
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    2019-09-01 zhwj

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