# Advances in Understanding the Impact of Human Gut Microbiota on Chemotherapy-Induced Neutropenia

## TL;DR

This paper explores how gut bacteria affect neutropenia caused by chemotherapy and discusses potential personalized treatments.

## Contribution

The paper provides a theoretical foundation for gut-protective chemotherapy by reviewing gut microbiota's role in neutrophil dynamics.

## Key findings

- Gut microbiota influence neutrophil counts during chemotherapy.
- Preserving microbiota stability could improve cancer treatment outcomes.
- Current therapeutic approaches have limitations in maintaining microbiota balance.

## Abstract

Neutrophils play a crucial role in defending against bacterial and fungal pathogens; however, chemotherapy reduces neutrophil counts, increasing infection risk and worsening cancer treatment outcomes. Emerging evidence highlights the gut microbiota as a promising biomarker and therapeutic target for chemotherapy-induced neutropenia (CIN). Here, we review current knowledge regarding the relationship between the gut microbiota and CIN, summarizing the mechanisms by which the microbiota influence neutrophil dynamics, current therapeutic approaches, and limitations in regard to preserving microbiota stability. This review offers a theoretical foundation for “gut-protective” chemotherapy, potentially facilitating personalized treatments, although clinical translation remains challenging.