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锌稳态相关基因在急性髓系白血病中的表达模式及预后意义。

Expression pattern and prognostic implication of zinc homeostasis-related genes in acute myeloid leukemia.

机构信息

School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, P.R. China.

State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, P.R. China.

出版信息

Metallomics. 2023 May 2;15(5). doi: 10.1093/mtomcs/mfad022.

Abstract

Zinc homeostasis is regulated by the SLC39A/ZIP, SLC30A/ZnT, and metallothionein (MT) protein families. The association of zinc homeostasis with acute myeloid leukemia (AML) is unclear. We previously demonstrated that zinc depletion by TPEN triggers apoptosis in NB4 AML cells with the degradation of PML-RARα oncoprotein, suggesting that zinc homeostasis may be associated with AML. The primary aim of this study was to explore the expression pattern and prognostic roles of zinc homeostasis-related genes in AML. Bioinformatics analyses were performed using integrated datasets from the TCGA and GTEx projects. The GEPIA tool was used to analyze the differential expression of zinc homeostasis-related genes. Correlations between zinc homeostasis-related genes were assessed with Spearman's correlation coefficient. OncoLnc was used to evaluate the prognostic roles of zinc homeostasis-related genes with Kaplan-Meier and Cox regression models. In both NB4 and U937 cells, the transcriptional regulation of zinc homeostasis-related genes by zinc depletion was detected through qPCR. We found that multiple ZIPs, ZnTs, and MTs were differentially expressed and correlated in AML tumors. In AML patients, higher expression of ZIP4 and lower expression of ZnT5 and ZnT7 predicted poorer survival. We further found that zinc depletion by TPEN upregulated ZIP7, ZIP9, ZIP10, ZIP13, and ZnT7 and downregulated ZIP14, ZnT1, ZnT6, and most of the positively expressed MTs in both NB4 and U937 AML cells. Our findings suggest high expression of ZIP4 and low expression of ZnT5 and ZnT7 as potential risk factors for the prognosis of AML. Zinc homeostasis may be a potential therapeutic target for AML, deserving further exploration.

摘要

锌稳态由 SLC39A/ZIP、SLC30A/ZnT 和金属硫蛋白 (MT) 蛋白家族调节。锌稳态与急性髓细胞白血病 (AML) 的关系尚不清楚。我们之前的研究表明,通过 TPEN 耗尽锌会触发 NB4 AML 细胞凋亡,同时降解 PML-RARα 癌蛋白,这表明锌稳态可能与 AML 有关。本研究的主要目的是探索锌稳态相关基因在 AML 中的表达模式和预后作用。使用来自 TCGA 和 GTEx 项目的综合数据集进行生物信息学分析。使用 GEPIA 工具分析锌稳态相关基因的差异表达。使用 Spearman 相关系数评估锌稳态相关基因之间的相关性。使用 OncoLnc 使用 Kaplan-Meier 和 Cox 回归模型评估锌稳态相关基因的预后作用。在 NB4 和 U937 细胞中,通过 qPCR 检测锌耗竭对锌稳态相关基因的转录调节。我们发现,在 AML 肿瘤中,多种 ZIP、ZnT 和 MT 的表达存在差异且相互关联。在 AML 患者中,ZIP4 表达升高和 ZnT5 和 ZnT7 表达降低预示着生存率较差。我们进一步发现,TPEN 耗尽锌上调了 NB4 和 U937 AML 细胞中 ZIP7、ZIP9、ZIP10、ZIP13 和 ZnT7 的表达,下调了 ZIP14、ZnT1、ZnT6 和大多数阳性表达的 MT 的表达。我们的研究结果表明,ZIP4 表达升高和 ZnT5 和 ZnT7 表达降低可能是 AML 预后的潜在风险因素。锌稳态可能是 AML 的潜在治疗靶点,值得进一步探索。

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