# MicroRNAs in Tissue Regeneration: Lessons from Animal Models

## TL;DR

This paper reviews how microRNAs help in tissue regeneration using animal models, focusing on heart, limb, and spinal cord repair.

## Contribution

The paper provides a comprehensive review of miRNA roles in regeneration, emphasizing animal model studies for future therapies.

## Key findings

- MicroRNAs regulate genes essential for tissue regeneration in animal models.
- Comparative studies between regenerating and non-regenerating systems are limited.
- Animal models offer insights for developing regenerative therapies in humans.

## Abstract

MicroRNAs (miRNAs) are a class of small noncoding RNAs that regulate gene expression. Over the past two decades, multiple studies have established the importance of miRNAs in regulating a variety of biological processes, one of which includes regenerative repair. Although many miRNAs have been shown to regulate the expression of genes that are required for regeneration, few studies have extrapolated these findings from cell culture to in vivo animal models or reported comparative work between regenerating and non-regenerating systems. Here, we review the most current literature highlighting the role of distinct miRNAs in regulating the repair of different tissues, focusing on the heart, limb and spinal cord. In exploring existing work, we emphasize the importance of using animal models to provide foundational knowledge that could potentially lead to future therapeutic strategies to allow for functional regenerative repair in humans.