Network Pharmacology and Intestinal Microbiota Analysis Revealing the Mechanism of Punicalagin Improving Bacterial Enteritis


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Abstract

Background:The Chinese medicine punicalagin (Pun), the most important active ingredient in pomegranate peel, has significant bacteriostatic and anti-inflammatory properties. The potential mechanisms of Pun for bacterial enteritis, however, are unknown.

Objective:The goal of our research is to investigate the mechanism of Pun in the treatment of bacterial enteritis using computer-aided drug technology, as well as to investigate the intervention effect of Pun on mice with bacterial enteritis using intestinal flora sequencing.

Methods:The targets of Pun and Bacterial enteritis were obtained by using the specific database, and cross-targets were screened among these targets, followed by PPI and enrichment analysis of the targets. Furthermore, the degree of binding between Pun and key targets was predicted through molecular docking. After successfully establishing the bacterial enteritis model in vivo, mice were randomly assigned to groups. They were treated for 7 days, the symptoms were observed daily, and the daily DAI and body weight change rate were calculated. Following administration, the intestinal tissue was removed, and the contents were separated. The tight junction protein expression was detected in the small intestine by the immunohistochemical method; ELISA and Western Blot (WB) were performed to detect the expressions of tumor necrosis factor-α (TNF-α) and interleukin- 6 (IL-6) in the serum and intestinal wall of mice. The 16S rRNA sequence was used to determine the composition and diversity of the intestinal flora of mice.

Results:In total, 130 intersection targets of Pun and disease were screened by network pharmacology. The enrichment analysis showed cross genes were closely related and enriched in the cancer regulation and the TNF signal pathway. The active components of Pun could specifically bind to the core targets TNF, IL-6, etc., determined from molecular docking results. In vivo experiment results showed that the symptoms in the PUN group mice were alleviated, and the expression levels of TNF-α and IL-6 were significantly reduced. A Pun can cause substantial changes in the intestinal flora of mice in terms of structure and function.

Conclusion:Pun plays a multi-target role in alleviating bacterial enteritis by regulating intestinal flora.

About the authors

Shuyun Huang

Tissue and Embryo Department, Wannan Medical College

Email: info@benthamscience.net

Ying Wang

Tissue and Embryo Department, Wannan Medical College

Email: info@benthamscience.net

Qingsong Zhu

Computer and Information Department, Hohai University

Email: info@benthamscience.net

Hongmin Guo

Tissue and Embryo Department, Wannan Medical College

Email: info@benthamscience.net

Zongyuan Hong

Tissue and Embryo Department, Wannan Medical College

Email: info@benthamscience.net

Shuzhi Zhong

Tissue and Embryo Department, Wannan Medical College

Author for correspondence.
Email: info@benthamscience.net

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