Citation: Lu-Fei Shi, Yao-Hua Gu, Ting Liu, Tian Feng, Neng-Bin Xie, Yu Liu, Jianyuan Wu, Jun Xiong, Bi-Feng Yuan. Multi-tissue profiling reveals disruptions in nucleic acid modification landscapes induced by the emerging environmental pollutant triclosan[J]. Chinese Chemical Letters, ;2026, 37(10): 112509. doi: 10.1016/j.cclet.2026.112509 shu

Multi-tissue profiling reveals disruptions in nucleic acid modification landscapes induced by the emerging environmental pollutant triclosan

Lu-Fei Shi ^{a, b, 1} ,
Yao-Hua Gu ^{a, c, 1} ,
Ting Liu ^{d, 1} ,
Tian Feng ^{a, b} ,
Neng-Bin Xie ^{a, b} ,
Yu Liu ^a ,
Jianyuan Wu ^{e, *,} ,
Jun Xiong ^{a, b, *,} ,
Bi-Feng Yuan ^{a, b, *,}

a.
Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, State Key Laboratory of Metabolism and Regulation in Complex Organisms, Wuhan University, Wuhan 430071, China
b.
Department of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
c.
School of Nursing, Wuhan University, Wuhan 430071, China
d.
Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
e.
Clinical Trial Center, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China

wujianyuan@znhospital.cn

jxiong@whu.edu.cn

bfyuan@whu.edu.cn

Received Date: 28 July 2025
Revised Date: 4 February 2026
Accepted Date: 5 February 2026
Available Online: 6 February 2026

Figures(6)

Triclosan (TCS) is an emerging environmental pollutant that has been widely used in personal care products and is frequently detected in the human body. As a marker on DNA and RNA, nucleic acid modifications are crucial for the versatile regulation of gene expression. However, the epigenetic mechanisms underlying TCS-induced adverse effects remain largely unclear. In this study, we systematically investigate the impact of TCS on DNA and small RNA modifications from C57BL/6 N mice at doses of 0, 50, and 200 mg kg⁻¹ d⁻¹, using liquid chromatography-tandem mass spectrometry (LC-MS/MS). We quantitatively quantified 23 nucleic acid modifications in seven tissues, including heart, liver, kidneys, lungs, brain, intestine, and testis. The results indicated that TCS exposure significantly suppressed body weight gain and altered organ coefficients in a dose-dependent manner. Multiple DNA and RNA modifications exhibit significant changes by TCS exposure across different tissues and display tissue-specific patterns. Notably, TCS exposure led to liver inflammation and lipid accumulation, accompanied by decreased levels of RNA N⁶-methyladenine (m⁶A) and elevated expression of fat mass and obesity-associated gene (FTO) in both mouse liver and HepG2 cells, suggesting its involvement in TCS-mediated epigenetic imbalance and hepatotoxicity. Our study provides the first comprehensive epigenetic evaluation of TCS-induced nucleic acid modification alterations across multiple organs in mammals, providing a new perspective for understanding the toxicological mechanisms of TCS from an epigenetic perspective.
- Triclosan,
- Epigenetics,
- Mass spectrometry,
- DNA modification,
- RNA modification,
- Hepatotoxicity
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