# Protective Effect of Neochlorogenic Acid on Diabetic Nephropathy via Inflammation and Pyroptosis Suppression

## TL;DR

Neochlorogenic acid protects against diabetic kidney disease by reducing inflammation and cell death through antioxidant and microRNA pathways.

## Contribution

This study reveals a novel dual microRNA-mediated mechanism by which neochlorogenic acid suppresses inflammation and pyroptosis in diabetic nephropathy.

## Key findings

- Neochlorogenic acid activates Nrf2 and reduces oxidative stress in mesangial cells.
- It suppresses inflammation by inhibiting NF-κB and inflammatory proteins.
- Neochlorogenic acid modulates miR-30a and miR-709 to regulate antioxidant and inflammatory pathways.

## Abstract

Diabetic nephropathy (DN) is one of the leading causes
of end-stage
renal disease. Neochlorogenic acid (nCGA), a polyphenolic compound
present in various plant-based foods, has been recognized for its
potent antioxidant and anti-inflammatory properties. However, its
mechanistic effects on pyroptosis and microRNA signaling in the context
of DN remain unclear. We investigated the molecular effects of nCGA
on oxidative stress, inflammation, pyroptosis, and miRNA regulation
in MES-13 mouse mesangial cells. nCGA enhanced Nrf2 activation, upregulated
antioxidant genes, and suppressed ROS accumulation. It inhibited NF-κB
signaling and reduced inflammatory proteins and also attenuated pyroptosis
by downregulating NLRP3, GSDMD, caspase-1, and IL-1β. MicroRNA
profiling revealed dual regulation: nCGA upregulated miR-30a, suppressing
NF-κB/TNF-α pathways, and downregulated miR-709, thereby
restoring the Nrf2-mediated antioxidant defense. Transfection with
miR-30a mimics or miR-709 inhibitors reproduced these protective effects.
These findings highlight the dual miRNA-mediated regulation, providing
novel therapeutic insights into mitigating oxidative stress and inflammation
in diabetic nephropathy.