Oncotarget:前列腺外周区脂肪代谢转录和代谢能力的增加也许能加强致癌敏感性

2017-06-10 AlexYang MedSci原创

人类前列腺包括三种不同的解剖学腺区域,包括外周区、中心区和过渡区。尽管前列腺癌可以在整个前列腺中发生,但癌症发生频率最高的是在外周区。与之相对,前列腺增生最常发生在过渡区域。最近,有研究人员检验了外周区和过渡区具有不同的代谢适应性,并且也许能阐释它们对癌症和前列腺增生固有的倾向的假设。研究人员进行了经历前列腺切除术病人的外周区和过渡区非肿瘤组织的RNA测序和高通量代谢组分析。RNA测序和代谢组数据

人类前列腺包括三种不同的解剖学腺区域,包括外周区、中心区和过渡区。尽管前列腺癌可以在整个前列腺中发生,但癌症发生频率最高的是在外周区。与之相对,前列腺增生最常发生在过渡区域。

最近,有研究人员检验了外周区和过渡区具有不同的代谢适应性,并且也许能阐释它们对癌症和前列腺增生固有的倾向的假设。研究人员进行了经历前列腺切除术病人的外周区和过渡区非肿瘤组织的RNA测序和高通量代谢组分析。RNA测序和代谢组数据整体分析表明,在外周区,参与脂肪生物合成的基因转录水平提高,脂肪酸代谢物的增加同样可以反映前述结果。另外,外周区同样表现出增加的脂肪酸代谢活性,并且包含了更高水平的神经传导物质。脂肪合成的从头合成和脂肪酸氧化两者能力的增加潜在的能够在外周区为癌症的生长提供了自由的环境,并且产生了代谢生长优势从而产生更多的癌细胞,这也是前列腺癌的一个特性。最后,研究人员指出,该脂肪富集特征也许可以解释观察到的外周区对肿瘤的敏感性。

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    2017-06-28 闆锋旦
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    2018-05-27 mjldent
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    2017-06-12 jambiya
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白介素-4在免疫响应调控中具有重要的作用,并且在癌症病人中的肿瘤微环境中检测到了高水平的存在,并且其浓度与恶性肿瘤的等级相关。在前列腺癌中,白介素-4与雄性激素受体的激活、增殖的增加和存活通路如Akt和NF-κB的激活有关。然而,它在治疗抗性中的作用还没有很好的阐释。最近,有研究人员调查了白介素-4对来自前列腺癌病人的原发性表皮细胞的影响。研究发现,当白介素-4在培养基中存在时,这些细胞的无性系潜

Oncotarget:通过在类器官中诱导定义的遗传性突变来对非裔美国人前列腺癌进行建模

基因组学研究促使了人们在人类癌症中的遗传改变进行快速的鉴定,但是这些改变的功能鉴定进展缓慢。最近,研究人员利用人类前列腺癌为模型,评估了在著名的癌症驱使基因中工程学定义的遗传改变来转化来源于非裔美国男性良性前列腺表皮肿瘤的可能性。研究人员利用慢病毒转导良性人类前列腺肿瘤,并单独的和在各种组合中表达MYC、shPTEN, shTP53 和AR,来概括前列腺癌的发展情况。研究发现,表达MYC、shPT