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在未使用的肝脏捐赠者中,性别特异性基因调节铁化

Hala Nazzal¹, Halil Kaan Caliskan², Meghan Unes³

¹College of Arts and Sciences, Saint Louis University, 1402 S. Grand Blvd, St. Louis, MO 63104, USA.

|February 27, 2026

概括

这项研究发现,在机器输液过程中,在供体肝脏中的铁或氧化应激标志物中没有显著的基于性别的差异. 需要进行更大规模的研究,以探索潜在的性依赖信号在肝脏的保存.

科学领域:

器官移植研究器官移植研究
细胞损伤机制细胞损伤机制
基于性别的生物差异.

背景情况:

雌性比雄性对与缺血相关的铁亡的抵抗力更大.
铁代谢,抗氧化途径和性激素的差异有助于这种抵抗.
人体捐赠肝脏的系统研究缺乏.

研究的目的:

调查性对非利用供体肝脏 (NDLs) 的铁和氧化应激途径的影响.
在ex vivo常热机器输液 (NMP) 期间评估NDL中的基因表达模式.

主要方法:

在3个男性和2个女性NDL中使用PROTECT双电路ex vivoNMP系统6小时.
在基线和6小时收集过液和组织样本.
量化马隆迪甲基 (MDA) 和评估与铁亡相关的基因表达.

主要成果:

在NDLs中,常温机器输液 (NMP) 是可行的.
氧化应激的标志物马隆迪化 (MDA) 水平在性别之间是可比的.
观察到几种与铁亡相关的基因的升级,在女性肝脏中表达了较高的乙烯基-CoA合成酶家族成员2 (ACSF2),尽管在纠正后在统计学上并不显著.

结论:

NDLs的NMP是可行的,在6小时后没有观察到MDA或大多数铁亡基因表达的性别相关差异.
虽然在女性肝脏中观察到更高的ACSF2表达,但它缺乏统计学意义.
需要进行更大规模的研究,以阐明肝脏保存期间潜在的性别依赖性铁死信号.

关键词:

铁性化 (ferroptosis) 是一种肝脏损伤肝脏损伤肝脏损伤标准热机器 perfusion perfusion 是一个常规热机器.性别特定的规定.

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