Chinese Journal of Tissue Engineering Research ›› 2022, Vol. 26 ›› Issue (8): 1202-1209.doi: 10.12307/2022.224
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Li Zhiyi1, He Pengcheng1, Bian Tianyue1, Xiao Yuxia1, Gao Lu2, Liu Huasheng1
Received:
2021-03-19
Revised:
2021-03-22
Accepted:
2021-05-17
Online:
2022-03-18
Published:
2021-11-02
Contact:
Liu Huasheng, MD, Chief physician, Department of Hematology, First Affiliated Hospital of Xi’an JiaoTong University, Xi’an 710061, Shaanxi Province, China
About author:
Li Zhiyi, MD, Department of Hematology, First Affiliated Hospital of Xi’an JiaoTong University, Xi’an 710061, Shaanxi Province, China
Supported by:
CLC Number:
Li Zhiyi, He Pengcheng, Bian Tianyue, Xiao Yuxia, Gao Lu, Liu Huasheng. Bibliometric and visualized analysis of ferroptosis mechanism research[J]. Chinese Journal of Tissue Engineering Research, 2022, 26(8): 1202-1209.
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被引频次超过1 000次的2篇文献是DIXON等[1]和GALLUZZI等[15]发表的文献,命名并确立了铁死亡作为一种新型调控性细胞死亡方式。YANG等[16]发现GPX4是最关键的抑制肿瘤铁死亡的抗氧化酶,ANGELI等[17]发现抑制GPX4活性可促进急性肾损伤,这2篇文献揭示了GPX4是抑制铁死亡至关重要的抗氧化酶。DOLL等[18]发现ACSL4在RSL3诱导的铁死亡发生过程中是必不可少的。JIANG等[19]首次发现抑癌基因p53可通过调节铁死亡抑制肿瘤细胞活性。YANG等[16](2014)、STOCKWELL等[20](2017)、XIE等[23](2016)和YANG等[24](2016)这4篇文献均在表6,7中出现,提示此4篇文献是铁死亡研究领域中具有高度中心性的、公认的经典文献。 在CNKI数据库被引频次超过10次的铁死亡中文文献有8篇,见表8,多为综述类文献,介绍了铁死亡的命名、分子机制和调节机制,及其在神经系统疾病和肿瘤中的作用。"
2.5 关键词分析 文献的关键词是用来表达学术论文主题内容必不可少的词语,是一篇学术论文中最核心、最重要的术语,具有索引、快速导读及突出重点的功能[33],因此通过分析关键词可迅速了解文献的核心内容。Web of Science和CNKI数据库中铁死亡领域的高频关键词分别见表9,10,Web of Science数据库铁死亡相关关键词的爆发图谱见图8。 高频关键词显示:铁死亡领域关注的代谢热点是铁代谢、脂质代谢和谷胱甘肽代谢。铁死亡的发生依赖亚铁与过氧化氢反应生成活性氧的芬顿反应,故铁的转运、存储和释放等代谢过程与铁死亡密切相关[34]。多不饱和脂肪酸被氧化生成的脂质过氧化物是铁死亡发生的必要,故脂质的合成、降解、酯化、去酯化和氧化等代谢过程也与铁死亡密切相关。谷胱甘肽是细胞内关键的抗氧化短肽,能强有力地抑制铁死亡,它的合成、降解及其底物的转运也与铁死亡密切相关[35]。 铁死亡领域的热点基因是GPX4,NRF2,p53,NF-κb。GPX4是合成谷胱甘肽的催化酶,是抑制铁死亡最为关键的抗氧化酶,它的活性和数量直接影响铁死亡[16]。NRF2,p53和NF-κb是3个著名的转录因子,调控多种基因表达,参与众多细胞过程。NRF2能感知细胞氧化应激水平,目前认为其能抑制铁死亡发生[2]。p53是研究最多的抑癌基因,其编码的p53蛋白调控上百种基因表达,能通过调控其不同靶基因的转录促进或抑制铁死亡[2]。NF-κb能激活促炎细胞因子的表达,促进铁死亡的发生[36]。 铁死亡在肿瘤、神经系统疾病和心血管疾病被广泛研究,索拉菲尼、爱拉斯汀(Erastin)和维生素E是铁死亡领域受到关注的药物。在肿瘤细胞中,多种癌蛋白、肿瘤抑制因子和致癌信号转导通路可调控铁死亡[37]。原癌基因RAS基因的突变是癌症中最常见的基因突变,铁死亡诱导剂爱拉斯汀在体外试验中能促进RAS突变的肿瘤细胞死亡[2]。索拉菲尼是RAS-G12C突变蛋白的直接抑制剂,除靶向原癌蛋白RAS的直接抗肿瘤作用,也可促进肿瘤细胞铁死亡发挥抗肿瘤作用[38]。神经退行性病(阿尔茨海默病和帕金森病等)的一个共同特征是神经细胞的早期和进行性丢失,研究发现阿尔茨海默病小鼠模型的病变区神经元细胞出现铁死亡,缺乏铁死亡抑制剂维生素E可加重小鼠的神经退行性变[39]。铁死亡是缺血再灌注疾病的关键驱动因素,如脑卒中、心肌梗死、急性肾损伤和手术或器官移植时的缺血再灌注损伤,铁死亡抑制剂能有效保护脑、心脏、肝肠肾等多种器官[40]。线粒体通透性改变和内质网应激是铁死亡中重要的亚细胞器改变[41-42],并介导与细胞凋亡间的相互作用[43]。 Web of Science数据库中高频关键词的首现时间多为2014-2016年,提示该时间段铁死亡研究发展迅速且不断受到全球研究者的关注。Web of Science数据库的关键词包含CNKI数据库的,但CNKI数据库的关键词时间略晚于Web of Science数据库,提示中国的铁死亡中文研究稍晚但紧跟国际热点研究。"
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