# Metabolite and gut microbiota co-biomarkers in Danggui Shaoyao San: insights into a shared therapeutic approach

## TL;DR

This paper explores how a traditional Chinese herbal formula, Danggui Shaoyao San, may treat multiple diseases by targeting shared metabolic and gut microbiota biomarkers.

## Contribution

The study proposes a unified mechanism for Danggui Shaoyao San's therapeutic effects across multiple diseases through shared metabolic and microbial biomarkers.

## Key findings

- Danggui Shaoyao San modulates tryptophan and phenylalanine metabolic pathways in plasma.
- The gut bacterial phylum Bacteroidetes is identified as a shared microbial biomarker influenced by the herbal formula.
- Botanical constituents of Danggui Shaoyao San help rebalance gut dysbiosis and the gut-brain axis.

## Abstract

Danggui Shaoyao San (DSS), a classical multi-herbal formulation of traditional Chinese medicine, demonstrates therapeutic potential for Type 2 Diabetes Mellitus (T2DM), Alzheimer’s Disease (AD), and Polycystic Ovary Syndrome (PCOS). This review proposes a unified mechanism whereby DSS exerts its effects by modulating a network of shared pathological biomarkers across these disorders. We identify tryptophan (Trp) and phenylalanine (Phe) as host-derived metabolic biomarkers in plasma, and the gut bacterial phylum Bacteroidetes as a shared gut microbial biomarker. The therapeutic actions of DSS are mediated by its botanical constituents (e.g., ligustilides, paeoniflorin, ferulic acid), which help correct the dysregulated Trp-kynurenine and Phe metabolic pathways, while simultaneously enriching Bacteroidetes to alleviate gut dysbiosis and rebalance the gut-brain axis. This coordinated regulation of shared host metabolic and gut microbial biomarkers provides a scientific rationale for applying DSS as a multi-targeted agent, illustrating a molecular basis for a shared therapeutic approach.