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Oncogene:特殊生物标志物可向恶性前列腺癌发送信号促其侵袭

2015-04-15 佚名 生物谷

近日,来自密歇根大学的研究者在杂志Oncogene上刊登了他们的最新研究成果,研究者发现了一种新型的生物标志物,其或许对于诊断和治疗前列腺癌非常重要。机体中的生物标志物就类似于汽车的警报灯,当其发送信号的时候或许就需要进行修理,在我们机体中,生物标志物就可以提示我们机体发生了某些故障,或者是我们即将生病的征兆。 Renny Franceschi教授指出,我们非常感兴趣去寻找可以区分恶性疾病的

近日,来自密歇根大学的研究者在杂志Oncogene上刊登了他们的最新研究成果,研究者发现了一种新型的生物标志物,其或许对于诊断和治疗前列腺癌非常重要。机体中的生物标志物就类似于汽车的警报灯,当其发送信号的时候或许就需要进行修理,在我们机体中,生物标志物就可以提示我们机体发生了某些故障,或者是我们即将生病的征兆。

Renny Franceschi教授指出,我们非常感兴趣去寻找可以区分恶性疾病的非恶性疾病的生物标志物,而最近我们研究发现了一种可以实现这种目的的生物标志物;前列腺癌发展地非常缓慢,一般情况下在其扩散之前患者就已经死于自然原因了,而恶性的前列腺癌却发展的非常迅速。

如果生物标志物的确可以控制前列腺癌细胞的生长,那么其或许是之前研究者并未见过的一种新的信号,而且其可以为开发治疗前列腺癌的新型药物提供思路;而这种新型的生物标志物也可以帮助区分快速发展和缓慢发展中的肿瘤组织。文章中研究者在骨质细胞中发现了这种调剂性的机制,随后他们还发现这种机制在前列腺癌细胞中或许是可以进行操作的。

研究者的想法就是添加磷酸基团,即对蛋白Runx2进行磷酸化操作,这或许就可以改变其结构从而激活骨质癌症细胞和前列腺癌细胞的特殊基因的表达,但这往往会引发不同的结果;骨细胞需要Runx2及“新唤醒”的基因来维持骨质健康,然而在前列腺癌细胞中Runx2可以诱发促癌生长和转移及的基因的表达。

蛋白质具有可以产生骨质的功能非常罕见,而其在前列腺癌中也具有不寻常的功能,为了验证这种想法,研究者抑制了癌细胞中Runx2被磷酸化的能力,结果发现,肿瘤细胞的生长降低了,同时研究者还同意大利的科学家联合研究分析了129名前列腺癌患者的组织样本。

结果发现,在正常的前列腺组织、良性的前列腺组织或前列腺炎患者机体中很少发现或并未发现Runx2的迹象,这就说明Runx2的磷酸化和前列腺癌的恶性发展非常相关。

下一步研究者将在Runx2磷酸化和前列腺癌发生之间建立一种实际的因果关系,他们随后将对比正常小鼠机体中前列腺癌的形成和缺失Runx2的小鼠机体的前列腺癌发生之间的关系。在世界范围内,前列腺癌是男性常见的第二大癌症,在美国仅2015年就有22.1万人被诊断出前列腺癌,大约死亡人数为2.75万人。

原始出处:

C Ge, G Zhao, Y Li, H Li, X Zhao, G Pannone, P Bufo, A Santoro, F Sanguedolce, S Tortorella, M Mattoni, S Papagerakis, E T Keller and R T Franceschi.Role of Runx2 phosphorylation in prostate cancer and association with metastatic disease.Oncogene, April 13, 2015; doi:10.1038/onc.2015.91

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    2016-01-31 cy0324
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    2015-04-17 zsyan
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