溃疡性结肠炎
光敏剂
NF-κB
光动力疗法
信号转导
医学
癌症研究
结肠炎
炎症
药理学
NFKB1型
化学
免疫学
内科学
转录因子
生物化学
疾病
有机化学
基因
作者
Yumei Rong,Minghui Zhu,Nan Wang,Feiyu Zhang,Tianjun Liu
标识
DOI:10.3389/fphar.2024.1539363
摘要
Introduction Ulcerative colitis (UC) is an inflammatory bowel disease characterized by inflammation and ulceration of the digestive tract. Methods Photodynamic therapy (PDT) with a novel photosensitizer LD 4 was used to treat UC rat models to explore the therapeutic effect and mechanism of LD 4 -PDT on UC. 16S ribosomal RNA was used to detect the composition of Gut microbiota. Results Our findings indicate that LD 4 -PDT could protect the integrity of the colonic mucosa, alleviate the inflammatory response and promote the healing of colonic mucosa. Mechanism studies demonstrated that LD 4 -PDT could inhibit the NF-κB signaling pathway, downregulated the expression of the inflammatory factors’ tumor necrosis factor-α (TNF-α), interleukin-6 ( IL-6 ) and myeloperoxidase ( MPO ), increased the contents of glutathione (GSH) and superoxide dismutase ( SOD ) and decreased the content of malondialdehyde (MDA). Additionally, analysis of gut microbiota revealed that LD 4 -PDT treatment could decrease the abundance of the Proteobacteria phylum in fecal samples, while no significant differences were observed in the Firmicutes, Bacteroidetes, or Actinobacteria phyla among the three groups using 16S rRNA analysis. Discussion In summary, our data suggested that LD 4 -PDT could inhibit DSS-induced UC in rats via the NF-κB signaling pathway, indicating its potential as a novel photosensitizer for the treatment of UC.
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