Research on the Toxic Effects on Human Cells of Natural Melanogenic Substance Ellagic Acid in Reservoirs of Eucalyptus Forest Area

Jiang Ran; Li Xin-yan; Zhou Yi-luan; Guo Jin-chuan; Dong Yan-jun; Pan Yue; Zhang Xin-feng; Zeng Cheng

doi:10.12052/gdutxb.230137

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Research on the Toxic Effects on Human Cells of Natural Melanogenic Substance Ellagic Acid in Reservoirs of Eucalyptus Forest Area

更新时间：2026-05-27

- Research on the Toxic Effects on Human Cells of Natural Melanogenic Substance Ellagic Acid in Reservoirs of Eucalyptus Forest Area
- Vol. 41, Issue 5, Pages: 58-65(2024)
- 作者机构：
  
  1. 珠江水利委员会珠江水利科学研究院水利部珠江河口治理与保护重点实验室,广东,广州,510640
  2. 珠江水利委员会珠江水利科学研究院广东省河湖生命健康工程技术研究中心,广东,广州,510640
  3. 广东工业大学生物医药学院,广东,广州,510006
  4. 广西壮族自治区水利科学研究院,广西,南宁,530013
  5. 广州医科大学第五临床医学院,广东,广州,510180
- 作者简介：
- 基金信息：
- DOI：10.12052/gdutxb.230137
  CLC： R994.6
- Published：2024
- 稿件说明：
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蒋然, 李心砚, 周义鸾, 郭晋川, 董延军, 潘越, 张心凤, 曾程. 桉树林区水库致黑物鞣花酸对人源细胞的毒理效应研究[J]. 广东工业大学学报, 2024, 41(5): 58-65.

Jiang Ran, Li Xin-yan, Zhou Yi-luan, et al. Research on the Toxic Effects on Human Cells of Natural Melanogenic Substance Ellagic Acid in Reservoirs of Eucalyptus Forest Area[J]. 2024, 41(5): 58-65.
蒋然, 李心砚, 周义鸾, 郭晋川, 董延军, 潘越, 张心凤, 曾程. 桉树林区水库致黑物鞣花酸对人源细胞的毒理效应研究[J]. 广东工业大学学报, 2024, 41(5): 58-65. DOI： 10.12052/gdutxb.230137.

Jiang Ran, Li Xin-yan, Zhou Yi-luan, et al. Research on the Toxic Effects on Human Cells of Natural Melanogenic Substance Ellagic Acid in Reservoirs of Eucalyptus Forest Area[J]. 2024, 41(5): 58-65. DOI： 10.12052/gdutxb.230137.

摘要

我国南方桉树林种植区里面的水库在秋冬季存在明显的天然致黑物质，主要为单宁酸、鞣花酸等多羟基酚类化合物及其铁盐络合物，中小型水库承担了农村生活饮用水源的功能，因此有必要评估天然致黑物质的毒性潜在风险。本文模拟南方桉树林区水库水体特有的天然致黑物，以不同浓度的鞣花酸(Ellagic acid

EA)和三价铁(Fe

)为研究对象，评价暴露于EA和/或Fe

对人源结直肠腺癌上皮细胞(DLD1)、肝细胞(LO2)和肾上皮细胞(293T)的一般细胞毒性、细胞内活性氧(Reactive Oxygen Species

ROS)水平和细胞形态变化，并确定不同质量浓度的EA和Fe

的毒性作用特征。结果提示EA和Fe

在单独暴露和联合暴露条件下表现出不同程度的细胞毒性。联合暴露时，DLD1在较高质量浓度的EA(1 mg/L

10 mg/L)联合1 μmol/L Fe

处理组中细胞活力显著下降，比EA单独暴露时毒性更强。而LO2和293T在联合暴露组中细胞活力均未产生明显变化，但与Fe

单独暴露相比联合暴露后细胞活力显著下降。氧化应激检测结果发现，与DMSO对照组相比，EA和/或Fe

暴露均显著增加了ROS水平。其中，DLD1和LO2的ROS结果可能提示EA与 Fe

共同暴露比EA单独暴露时对细胞内ROS生成的影响更大，提高了氧化应激水平。此外，暴露于EA和/或Fe

对3种细胞的细胞形态没有发现明显变化，但显著抑制了LO2中肌动蛋白F-actin的表达。结果表明，EA和Fe

的单独或联合暴露对人源细胞具有较强的毒害作用，按影响程度从大到小排序，依次为：肝细胞LO2 肠道细胞DLD1 肾细胞293T。本文为南方农村水源地污染物的精准管控提供了基础依据。

Abstract

Water sources used for rural residential water in reservoirs of the southern

Eucalyptus

forest area are

clearly exposed to natural melanogens such as tannins

ellagic acid and other polyhydroxyphenolic compounds and their iron salt complexes during autumn and winter

making it necessary to evaluate the effect of natural melanogens on human health. In this study

by simulating the natural melanogenic substances from reservoir waters in southern

Eucalyptus

forests with different concentrations of ellagic acid

trivalent iron were used to evaluate the general cytotoxicity

intracellular reactive oxygen species (ROS) levels

and cellular morphological changes after exposing to ellagic acid (EA) and/or trivalent iron (Fe

) on colorectal adenocarcinoma epithelial cells (DLD1)

hepatocytes (LO2)

and human renal epithelial cells (293T) . The results showed cytotoxicity in most cases under both individual and combined exposure conditions. Cell viability was significantly reduced in the higher concentration of EA (1 mg/L

10 mg/L) combined with 1 μmol/L Fe

treatment group

which was more toxic than EA exposure alone. The cell viability of LO2 and 293T cells did not change significantly in the combined exposure group

but they were decreased when compared with that of Fe

exposure alone. The results of oxidative stress assays found that both EA and/or Fe

exposure significantly increased ROS levels compared with DMSO controls. The ROS results for DLD1

LO2 may suggest that co-exposure had a greater effect on intracellular ROS secretion than when EA was exposed alone. In addition

no significant changes of cell morphology were observed in all treated groups

but the expression of actin F-actin in LO2 was significantly inhibited. The results of this study indicate that ellagic acid and trivalent iron exposure alone or in combination have deleterious effects on human cells

and the toxic effects in order are sorted as follows: hepatocytes (LO2) intestinal cells (DLD1) kidney cells (293T) . This study provided an important basis for the precise control of conta

minants in southern rural water sources.

关键词

Keywords

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