【摘 要】
:
Objective: Investigation of the regulatory mechanisms of cell stemness in cholangiocarcinoma(CCA) is essential for developing effective therapies to improve patient outcomes. The purpose of this study
【机 构】
:
Department of Hepatobiliary, Sun Yat-sen Memorial Hospital, Sun Yat-sen University
【基金项目】
:
supported by the National Natural Science Foundation of China (Grant No. 81772621); the National Key R&D Program of China (Grant No. 2017YFA0504400);
论文部分内容阅读
Objective: Investigation of the regulatory mechanisms of cell stemness in cholangiocarcinoma(CCA) is essential for developing effective therapies to improve patient outcomes. The purpose of this study was to investigate the function and regulatory mechanism of m6 A modifications in CCA cell stemness.Methods: Interleukin 6(IL-6) treatment was used to induce an inflammatory response, and loss-of-function studies were conducted using mammosphere culture assays. Chromatin immunoprecipitation, polysome profiling, and methylated RNA immunoprecipitation analyses were used to identify signaling pathways. The in vitro findings were verified in a mice model.Results: We first identified that m6 A writers were highly expressed in CCAs and further showed that STAT3 directly bound to the gene loci of m6 A writers, showing that IL-6/STAT3 signaling regulated expressions of m6 A writers. Downregulating m6 A writers prevented cell proliferation and migration in vitro and suppressed CCA tumorigenesis in vivo. Notably, the knockdown of m6 A writers inhibited CCA cell stemness that was triggered by IL-6 treatment. Mechanistically, IGF2 BP2 was bound to CTNNB1 transcripts, significantly enhancing their stability and translation, and conferring stem-like properties. Finally, we confirmed that the combination of m6 A writers, IGF2 BP2, and CTNNB1 distinguished CCA tissues from normal tissues.Conclusions: Overall, this study showed that the IL-6-triggered inflammatory response facilitated the expressions of m6 A writers and cell stemness in an m6 A-IGF2 BP2-dependent manner. Furthermore, the study showed that m6 A modification was a targetable mediator of the response to inflammation factor exposure, was a potential diagnostic biomarker for CCA, and was critical to the progression of CCA.
其他文献
寿县是安徽省的农业大县,农业机械化的快速发展,对农业机械部门管理工作提出了更高的要求,加强县域农业机械管理尤为重要。基于此,笔者以寿县为例,分析了该县农业机械化的条件与基础,指出了该县农业机械化面临的问题,阐述了该县农业机械化的改进措施。实践证明,尽管寿县农业机械发展势头较好,为区域农业发展创造了有利条件,但客观来说寿县农业机械建设还存在一定的不足,因此需要通过完善农业机械基础设施、加大政府财政支
目的 探讨前馈控制风险管理在产房临床护理管理中的应用效果。方法 选择2020年4月—2021年3月于某院产房待产的96例孕产妇作为研究对象,采用随机数字表法分为试验组(n=48)与对照组(n=48)。对照组接受产房常规护理模式,试验组接受产房前馈控制风险管理,比较两组孕产妇的护理质量、分娩结局及助产不良事件发生情况。结果 试验组的护理质量评估量表各维度评分及总评分均显著高于对照组(P<0.001)
目的 探讨糖尿病酮症酸中毒(DKA)患儿疾病严重程度的危险因素。方法 回顾性分析2017年10月~2020年10月在本院收治的DKA患儿60例,按疾病严重程度将患儿分为轻度组和中重度组各30例。对患儿的一般资料、临床资料、生活习惯、治疗方式、入院时实验室检查结果等方面进行统计,并采用χ~2检验分析计数资料,独立样本t检验分析计量资料,同时进行Logistic回归分析,以确定影响患儿DKA严重程度的
基于自我概念理论,通过收集工程建设领域内376名项目员工的调研数据,探讨并检验工程项目情境下授权型领导通过内部人身份感知与项目认同影响项目公民行为的链式中介模型,以及项目规模的调节作用。研究结果表明:授权型领导对项目公民行为具有正向影响;内部人身份感知和项目认同可起到单独中介作用以及链式中介作用;项目规模不仅负向调节内部人身份感知与项目认同之间的正相关关系,而且负向调节上述链式中介机制。
<正>因煤而兴的煤化工产业,多年来却并未把自己的前途命运与煤炭市场联系起来。但是,今年以来煤炭价格的疯狂终于让煤化工产业明白:煤炭才是自己的命门。今后能否盈利甚至能否生存,不是要看油,而是要看煤。此前,煤化工主要是把自己的命运与国际原油市场捆绑在一起,以致于在评价项目经济性时,习惯以国际油价的走势或高低作为假设条件。
肠道病毒71型(enterovirus 71, EV71)是引起手足口病(hand, foot and mouth disease, HFMD)的主要病原体,在全球周期性暴发流行,至今尚无特效药物。临床研究显示中成药在治疗小儿手足口病上具有一定疗效。小儿青翘颗粒(XEQQ)是由山银花、连翘、葛根、大青叶等多味中药组成的中药方剂,临床研究发现其对EV71引起的手足口病症具有一定疗效,但其是否具有直接
本文介绍1例右上肢Ⅲ期恶性黑色素瘤的诊疗过程,该患者实施肿瘤切除、淋巴结清扫术后,实施隔离热灌注化疗技术。通过隔离热灌注化疗术后,患者原发病灶变小,行保肢手术,手术配合顺畅,术中无血栓形成,无筋膜室综合征发生,术中灌注速度快,右上肢肢体肿胀轻。因此,隔离热灌注化疗技术可提高恶性肿瘤治疗安全性,但是该技术操作复杂、手术风险高、并发症多,需要手术过程中器械护士、巡回护士和手术医生的密切配合,手术护理配
语法学界一般认为,现代汉语工具动量词的作用是作为动量标记或分类标记。本文在大规模真实语料中观察后提出,工具动量词一个重要的语义功能是通过概念转喻的机制实现动作事件的指称,其作用与动作动词的名物化形式相当。专用动量词也可以指称动作,但使用频率和概念自主程度都很低。工具动量词的事件指称功能在以往研究中一直没有受到重视,但它是汉语区别于英语等印欧语的一个重要个性。