中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (30): 4806-4811.doi: 10.12307/2022.735

• 造血干细胞 hematopoietic stem cells • 上一篇    下一篇

单倍体造血干细胞移植后肠道急性移植物抗宿主病的发病机制

于漫亚1,孔凡盛2,张  杰2,徐  杰2,崔  兴2   

  1. 1山东中医药大学中医学院,山东省济南市   250014;2山东中医药大学附属医院血液科,山东省济南市   250011
  • 收稿日期:2021-11-18 接受日期:2021-12-16 出版日期:2022-10-28 发布日期:2022-03-29
  • 通讯作者: 崔兴,博士,主任医师,硕士研究生导师,山东中医药大学附属医院血液科,山东省济南市 250011
  • 作者简介:于漫亚,女,1998年生,山东省菏泽市人,汉族,山东中医药大学在读硕士,主要从事中西医结合血液病临床及实验研究。
  • 基金资助:
    国家自然科学基金面上项目(81774080),项目负责人:崔兴;泰山学者青年专家人才项目(tsqn201812145),项目负责人:崔兴

Pathogenesis of intestinal acute graft-versus-host disease after haploid hematopoietic stem cell transplantation

Yu Manya1, Kong Fansheng2, Zhang Jie2, Xu Jie2, Cui Xing2   

  1. 1College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, Shandong Province, China; 2Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong Province, China
  • Received:2021-11-18 Accepted:2021-12-16 Online:2022-10-28 Published:2022-03-29
  • Contact: Cui Xing, MD, Chief physician, Master’s supervisor, Department of Hematology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, Shandong Province, China
  • About author:Yu Manya, Master candidate, College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, Shandong Province, China
  • Supported by:
    General Project of National Natural Science Foundation of China, No. 81774080 (to CX); Taishan Scholars Young Expert Talent Project, No. tsqn201812145 (to CX)

摘要:

文题释义:
急性移植物抗宿主病:是异基因造血干细胞移植的常见并发症,肠道是其常发生的部位之一,其发病过程包括3个阶段,其中炎性细胞因子的释放、T细胞的增殖和分化占据主导地位。全身类固醇治疗是急性移植物抗宿主病的一线治疗方案,但部分患者对此无效,导致该病死亡率高,患者生活质量差,研究其发病和进展机制有助于新药物的研发,提高临床疗效。
长链非编码RNA:是一类长度超过200个核苷酸,几乎不编码蛋白质的RNA转录本,通过表观遗传调控、基因印迹、转录激活、mRNA修饰、核运输、蛋白活性激活等途径,参与多种疾病的进展。研究表明,长链非编码RNA与T细胞介导的免疫反应关系密切。

背景:肠道急性移植物抗宿主病是异基因造血干细胞移植后最常见的危及生命的并发症之一,由供体免疫活性T细胞攻击健康受体组织导致,目前治疗方案效果不佳。长链非编码RNA参与免疫反应等多种生物学过程,但在肠道急性移植物抗宿主病中的作用尚不清楚,有待进一步研究。
目的:构建肠道急性移植物抗宿主病差异长链非编码RNA和mRNA表达谱,预测其可能的作用及机制。
方法:采集4例单倍体造血干细胞移植后肠道急性移植物抗宿主病患者和4名健康志愿者的外周血单个核细胞进行高通量测序,并对差异mRNA进行GO和KEGG富集分析。根据基因表达信号值的动态变化,构建差异长链非编码RNA-mRNA共表达网络,基于长链非编码RNA对下游靶基因不同的调节机制,分别预测其通过顺式或反式调控及经由竞争性内源RNA机制调控的靶基因,使用Cytoscape构建基因互作网络,通过对靶基因的功能分析预测差异长链非编码RNA可能的作用及相关机制。
结果与结论:肠道急性移植物抗宿主病患者的外周血单个核细胞中有1 311个长链非编码RNA和3 283个mRNA差异表达,GO和KEGG结果提示这些差异mRNA主要富集在白细胞介素18、白细胞介素1介导的信号通路、转录因子AP-1复合物、巨核细胞分化和肿瘤坏死因子信号通路,这与肠道炎性反应及与骨髓造血能力关系密切。差异长链非编码RNA顺式及反式调控的靶基因包括一些炎症相关分子,如ZEB2、CDK6、CEACAM1、CXCL1等,经由竞争性内源RNA机制调控的通路主要有PI3K/Akt通路和Notch通路,这与T细胞的活化以及肠道干细胞的稳态相关。结果表明,差异长链非编码RNA可能通过调控炎症相关因子的表达,影响T细胞介导的免疫反应及肠道干细胞的稳态,在肠道急性移植物抗宿主病的发病及进展中发挥重要作用,可能成为诊断及治疗的新靶点。
缩略语:长链非编码RNA:long non-coding RNA,lncRNA

https://orcid.org/0000-0002-8771-5898 (崔兴) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 急性移植物抗宿主病, 肠道, lncRNA, mRNA, 竞争性内源RNA, 顺式调控, 反式调控

Abstract: BACKGROUND: Acute graft-versus-host disease is one of the most common life-threatening complications of allogeneic hematopoietic stem cell, caused by the attack of donor immunoreactive T cells on healthy recipient tissue. The current treatment plan is not effective. Long non-coding RNAs (lncRNAs) are involved in many biological processes such as immune response, but their roles in acute graft-versus-host disease remain unclear and need to be further studied.  
OBJECTIVE: To construct profiles of differentially expressed lncRNAs and differentially expressed mRNAs of intestinal acute graft-versus-host disease and predict their possible roles and mechanisms.
METHODS:  Peripheral blood mononuclear cells from four patients with intestinal acute graft-versus-host disease after haploidentical hematopoietic stem cell transplantation and four healthy volunteers were collected for high-throughput sequencing. GO and KEGG enrichment analyses were performed on the differentially expressed mRNAs. According to the dynamic change of gene expression signal value, the differential lncRNA-mRNA co-expression network was constructed. Based on the different regulatory mechanisms of lncRNA on downstream target genes, the target genes regulated by cis or trans regulation and competitive endogenous RNA mechanisms were predicted, respectively. Cytoscape was used to construct the gene interaction networks. The possible effects and related mechanisms of differentially expressed lncRNAs were predicted through functional analysis of their target genes.  
RESULTS AND CONCLUSION: There are 1 311 lncRNAs and 3 283 mRNAs differentially expressed in the peripheral blood mononuclear cells of patients with intestinal acute graft-versus-host disease. GO and KEGG analyses indicated that these differentially expressed mRNAs were involved in interleukin-18 or interleukin-1 mediated signaling pathway, AP-1 complex, megakaryocyte differentiation, and tumor necrosis factor signaling pathway, which were closely related to intestinal inflammatory response and hematopoietic ability of bone marrow. Cis-and trans-regulated genes of differentially expressed lncRNAs include some inflammation-related molecules, such as ZEB2, CDK6, CEACAM1, and CXCL1. The pathways regulated by differentially expressed lncRNAs via competitive endogenous RNA mechanism mainly include PI3K/Akt pathway and Notch pathway, which are related to the activation of T cells and the homeostasis of intestinal stem cells. It is concluded that differentially expressed lncRNAs are essential in the pathogenesis and progression of intestinal acute graft-versus-host disease via regulating the expression of inflammation-related molecules, T cell-mediated immune response, and the homeostasis of intestinal stem cells, and may become novel targets for the diagnosis and treatment of intestinal acute graft-versus-host disease.

Key words: acute graft-versus-host disease, intestine, lncRNA, mRNA, competitive endogenous RNA, cis-regulation, trans-regulation

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