中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (6): 1450-1463.doi: 10.12307/2026.573

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

放射性心脏损伤小鼠内皮细胞衰老的诊断标志物筛选及免疫浸润分析

赖家铭1,2,宋玉玲3,陈梓曦4,魏镜桓5,蔡  浩1,2,李国权1,6   

  1. 1青海大学医学院基础医学部,青海省西宁市  810016;青海省第五人民医院(省肿瘤医院),2肿瘤放疗科,3物理技术工程部,4医疗信息管理办公室,5办公室,青海省西宁市  810007;6青海省人民医院肿瘤内科,青海省西宁市  810007
  • 收稿日期:2024-11-22 接受日期:2025-01-21 出版日期:2026-02-28 发布日期:2025-07-16
  • 通讯作者: 李国权,博士,主任医师,青海大学医学院基础医学部,青海省西宁市 810016;青海省人民医院肿瘤内科,青海省西宁市 810007 共同通讯作者:蔡浩,博士,副主任医师,青海大学医学院基础医学部,青海省西宁市 810016;青海省第五人民医院(省肿瘤医院)肿瘤放疗科,青海省西宁市 810007
  • 作者简介:赖家铭,男,1997年生,青海大学在读硕士,主要从事肿瘤放射生物学的研究。
  • 基金资助:
    2019年度青海省“昆仑英才·高端创新创业人才”项目直接引进领军人才(QHKLYC-GDCXCY-2019-026),项目负责人:李国权;青海省卫生健康委指导性课题(2021-wjzdx-79),项目负责人:蔡浩;青海省卫生健康委指导性课题(J2024013),项目负责人:蔡浩

Screening of diagnostic markers for endothelial cell Senescence in mice with radiation-induced heart disease and analysis of immune infiltration

Lai Jiaming1, 2, Song Yuling3, Chen Zixi4, Wei Jinghuan5, Cai Hao1, 2, Li Guoquan1, 6   

  1. 1Department of Basic Medical Sciences, Qinghai University Medical College, Xining 810016, Qinghai Province, China; 2Radiation Oncology Department, 3Physical Technology Engineering Department, 4Office of Medical Information, 5Hospital Office, Fifth People’s Hospital/Cancer Hospital of Qinghai Province, Xining 810007, Qinghai Province, China; 6Department of Oncology, Qinghai Provincial People’s Hospital, Xining 810007, Qinghai Province, China
  • Received:2024-11-22 Accepted:2025-01-21 Online:2026-02-28 Published:2025-07-16
  • Contact: Li Guoquan, PhD, Chief physician, Department of Basic Medical Sciences, Qinghai University Medical College, Xining 810016, Qinghai Province, China; Department of Oncology, Qinghai Provincial People’s Hospital, Xining 810007, Qinghai Province, China Co-corresponding author: Cai Hao, PhD, Associate chief physician, Department of Basic Medical Sciences, Qinghai University Medical College, Xining 810016, Qinghai Province, China; Radiation Oncology Department, Fifth People’s Hospital/Cancer Hospital of Qinghai Province, Xining 810007, Qinghai Province, China
  • About author:Lai Jiaming, Master candidate, Department of Basic Medical Sciences, Qinghai University Medical College, Xining 810016, Qinghai Province, China; Radiation Oncology Department, Fifth People’s Hospital/Cancer Hospital of Qinghai Province, Xining 810007, Qinghai Province, China
  • Supported by:
    2019 Qinghai Province “Kunlun Talents - High-end Innovation and Entrepreneurial Talents” Project for Directly Introducing Leading Talents, No. QHKLYC-GDCXCY-2019-026 (to LGQ); Qinghai Provincial Health and Wellness Commission Guiding Subject, No. 2021-wjzdx-79 (to CH); Qinghai Provincial Health and Wellness Commission Guiding Project, No. J2024013 (to CH)

摘要:


文题释义:
放射性心脏损伤:是指由于胸部肿瘤(如乳腺癌、肺癌、纵隔肿瘤等)放射治疗过程中,心脏及相关结构(如冠状动脉、心包、心肌及心脏瓣膜)受到电离辐射作用而导致的急性或慢性损伤。
细胞衰老:是指细胞周期停滞的状态,在这种状态下增殖细胞会对促生长刺激产生耐受,通常由DNA损伤所引起。

背景:放疗显著提高了多种恶性肿瘤患者的生存率。然而,随着治疗后的生存周期延长,许多患者面临放疗相关的心脏毒性风险,尤其是在接受胸部放疗后,放射性心脏损伤的风险显著增加,已成为影响患者生存最为严重的并发症之一。
目的:通过系统转录组学分析,确定放射性心脏损伤内皮细胞衰老的诊断标志物。
方法:首先,从CellAge数据库中筛选出与细胞衰老相关的基因,然后与放射性心脏损伤小鼠模型的转录组训练数据集进行相交分析,识别衰老相关差异表达基因。其次,结合加权基因共表达网络分析和机器学习,识别出放射性心脏损伤中具有关键作用的枢纽基因,并在放射性内皮损伤验证数据集验证这些基因的表达。此外,采用 quanTIseq方法评估放射性心脏损伤相关的免疫浸润状态。通过分析癌症基因组图谱数据库,探讨关键基因的表达水平与接受胸部放疗的食管鳞状细胞癌患者生存期的关联。
结果与结论:①通过转录组学分析鉴别出CCND1为放射性心脏损伤内皮细胞衰老的核心基因,并在放射性心脏损伤小鼠模型中得到验证;②基于这些数据构建的诊断模型表明,CCND1在放射性心脏损伤的诊断中具有较高的特异性和敏感性;③免疫浸润分析显示,放射性心脏损伤小鼠存在显著的免疫反应失调现象,CCND1与多种免疫细胞密切相关;④Kaplan-Meier 生存分析显示,CCND1与接受胸部放疗的食管鳞状细胞癌患者的疾病特异性生存率较差相关。该研究首次系统性揭示 CCND1在放射性心脏损伤内皮细胞衰老中的关键作用。CCND1是一种与细胞周期调控密切相关的基因,其异常表达可能引发细胞衰老,具有作为放射性心脏损伤诊断标志物的潜力。

关键词: 放射性心脏损伤, 细胞衰老, CCND1, 机器学习, 诊断标志物, 免疫浸润, 加权基因共表达网络分析(WGCNA)

Abstract: BACKGROUND: Radiotherapy significantly improves survival rates in patients with various malignant tumors. However, with prolonged post-treatment survival, many patients face the risk of radiation-related cardiac toxicity. This is especially true after chest radiotherapy, where the risk of radiation-induced heart disease significantly increases, becoming one of the most severe complications affecting prognosis survival. 
OBJECTIVE: To identify diagnostic markers of endothelial cellular senescence in radiation-induced heart disease through systematic transcriptomic analysis.
METHODS: Firstly, genes associated with cellular senescence were screened from the CellAge database and intersected with the transcriptomic training dataset of a mouse model of radiation-induced heart disease to identify differentially expressed senescence-related genes. Secondly, weighted gene co-expression network analysis and machine learning were used to identify key hub genes that play critical roles in radiation-induced heart disease. The expression of these genes was validated using a dataset of radiation-induced endothelial injury. Additionally, the quanTIseq method was employed to assess the immune infiltration status related to radiation-induced heart disease. The expression levels of key genes and their association with survival in esophageal squamous cell carcinoma patients receiving chest radiotherapy were explored through the analysis of The Cancer Genome Atlas database.
RESULTS AND CONCLUSION: (1) Systematic transcriptomic analysis identified CCND1 as the core gene of endothelial cellular senescence in radiation-induced heart disease, and this finding was validated in the mouse model of radiation-induced heart disease. (2) The diagnostic model constructed from these data indicated that CCND1 had high specificity and sensitivity for diagnosing radiation-induced heart disease. (3) Immune infiltration analysis revealed significant immune response dysregulation in the mouse model of radiation-induced heart disease, and CCND1 was closely related to various immune cells. (4) Kaplan-Meier survival analysis showed that CCND1 was associated with poorer disease-specific survival in esophageal squamous cell carcinoma patients receiving chest radiotherapy. This study systematically uncovers, for the first time, the pivotal role of CCND1 in endothelial cell senescence associated with radiation-induced heart disease. CCND1, a gene integral to cell cycle regulation, can induce cellular senescence when abnormally expressed. Furthermore, the findings highlight its potential as an early diagnostic marker.

Key words: radiation-induced heart disease, cellular senescence, CCND1, machine learning, diagnostic biomarkers, immune infiltration, weighted gene co-expression network analysis (WGCNA)

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