Transcriptomics and metabolomics reveal the alleviation effect of pectic polysaccharide on dextran sodium sulfate-induced colitis mice

Xiaoqing Li; Wen Duan; Yi Zhu; Ruya Ji; Konglong Feng; Yukti Kathuria; Hang Xiao; Yigang Yu; Yong Cao

doi:10.1016/j.ijbiomac.2024.138755

Transcriptomics and metabolomics reveal the alleviation effect of pectic polysaccharide on dextran sodium sulfate-induced colitis mice

Int J Biol Macromol. 2024 Dec 12:288:138755. doi: 10.1016/j.ijbiomac.2024.138755. Online ahead of print.

Authors

Xiaoqing Li¹, Wen Duan², Yi Zhu³, Ruya Ji⁴, Konglong Feng⁵, Yukti Kathuria⁴, Hang Xiao⁶, Yigang Yu⁷, Yong Cao⁸

Affiliations

¹ College of Food Science and Engineering, South China University of Technology, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China; Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA.
² College of Food Science and Engineering, South China University of Technology, Guangzhou 510006, China.
³ Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China.
⁴ Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA.
⁵ Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China; Foshan University, Foshan 528000, China.
⁶ Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA. Electronic address: hangxiao@foodsci.umass.edu.
⁷ College of Food Science and Engineering, South China University of Technology, Guangzhou 510006, China. Electronic address: yuyigang@scut.edu.cn.
⁸ Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou 510642, China. Electronic address: Caoyong2181@scau.edu.cn.

PMID: 39674473
DOI: 10.1016/j.ijbiomac.2024.138755

Abstract

Ulcerative colitis (UC) is a relapsing disease with an increasing morbidity and prevalence. Dietary polysaccharides have recently become a research hotspot because of their therapeutic effects and safety on UC. Our previous research elucidated that pectic polysaccharide from Phyllanthus emblica L. (PEP-1) could alleviate dextran sodium sulfate-induced UC mice. Herein, metabolomics and transcriptomics were further applied to disclose the underlying mechanisms behind PEP-1's anti-inflammatory effects. PEP-1 intervention altered the serum metabolite contents and pathways represented by decreasing xanthine and sphinganine levels. Changes in gene expressions correlated with metabolite variations led by the suppression of the expression of the inflammatory factors, colorectal cancer promoter, and NF-κB pathway as well as the enhancement of tight junctions. This study demonstrated that the ameliorating effect of chronic UC was partially ascribed to the alteration of the serum metabolites and changes in gene expression.

Keywords: Colonic inflammation; Metabolomic profile; Phyllanthus emblica L. polysaccharide; Transcriptomic analysis.