High Correlation between Micronuclei in Lymphocytes and Buccal Cells in Humans provides further Validation of their use as Biomarkers of DNA Damage and Cancer Risks in vivo.

IF 2.5 4区 医学 Q3 GENETICS & HEREDITY
Mutagenesis Pub Date : 2025-03-24 DOI:10.1093/mutage/geaf006
Armen Nersesyan, Stefania Proietti, Siegfried Knasmueller, Stefano Bonassi, Michael Fenech
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引用次数: 0

Abstract

Micronuclei (MN) are cellular structures containing chromosome fragments or whole chromosomes that fail to be incorporated into the main nuclei during mitosis. MN measured in lymphocytes using the cytokinesis-block method and MN in buccal cells are among the most widely used methods for measuring DNA damage in humans. However, it remains unclear whether they correlate well with each other. This has important implications regarding whether existing evidence linking MN in lymphocytes to prospective cancer risk can also be extended to MN in buccal cells, a much less invasive approach. We therefore systematically reviewed results from published studies that reported MN frequencies simultaneously in buccal cells and lymphocytes. Data were extracted from a set of 81 study groups reported in 62 publications. The overall frequency of MN in groups exposed to increased risk of DNA damage was 2.54 times higher compared to controls (95% CI: 2.06-3.01) in buccal cells and 2.43 times higher (95% CI: 1.92-2.93) in lymphocytes. Frequencies of MN in populations investigated for occupational or environmental exposure to genotoxins, various diseases, and poor nutrition/lifestyle were also compared in each study and for each tissue (lymphocytes and buccal mucosa) with frequencies in control subjects using the Mean Ratio (MR). Concordance between the two MN assays was evaluated by comparing MRs for primary exposure in all studies using a correlation analysis. The overall Pearson correlation index was 0.768 (0.877 for case-control studies and 0.998 for intervention studies), showing that MR estimates from the two assays were highly and significantly correlated (p<0.001). The results from this investigation indicate that data obtained using the buccal MN assay reflect results obtained using the lymphocyte cytokinesis-block MN assay. This suggests that the buccal MN assay may also identify those at increased risk of tumorigenesis. Prospective studies will ultimately be required to completely verify this hypothesis.

微核(MN)是含有染色体片段或整条染色体的细胞结构,它们在有丝分裂过程中未能被纳入主核。使用细胞分裂阻滞法测量淋巴细胞中的 MN 和口腔细胞中的 MN 是测量人类 DNA 损伤最广泛使用的方法之一。然而,目前还不清楚这两种方法之间是否存在很好的相关性。这对现有证据是否能将淋巴细胞中的 MN 与潜在癌症风险联系起来并推广到颊细胞中的 MN(一种侵入性更小的方法)具有重要影响。因此,我们系统回顾了同时报告口腔细胞和淋巴细胞中 MN 频率的已发表研究结果。我们从 62 份出版物中报告的 81 组研究中提取了数据。在 DNA 损伤风险增加的群体中,口腔细胞中的 MN 总频率是对照组的 2.54 倍(95% CI:2.06-3.01),淋巴细胞中的 MN 总频率是对照组的 2.43 倍(95% CI:1.92-2.93)。此外,还使用平均比值(MR)比较了每项研究和每个组织(淋巴细胞和口腔粘膜)中因职业或环境暴露于基因毒素、各种疾病和不良营养/生活方式而接受调查的人群中的 MN 频率与对照组的频率。通过相关性分析比较所有研究中主要暴露的 MR,评估两种 MN 检测方法之间的一致性。总体皮尔逊相关指数为 0.768(病例对照研究的相关指数为 0.877,干预研究的相关指数为 0.998),这表明两种检测方法得出的 MR 估计值具有高度显著的相关性(P<0.05)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Mutagenesis
Mutagenesis 生物-毒理学
CiteScore
5.90
自引率
3.70%
发文量
22
审稿时长
6-12 weeks
期刊介绍: Mutagenesis is an international multi-disciplinary journal designed to bring together research aimed at the identification, characterization and elucidation of the mechanisms of action of physical, chemical and biological agents capable of producing genetic change in living organisms and the study of the consequences of such changes.
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