# A Combination of Amaranth Protein Hydrolysate and Korean Mint Extract Ameliorates Cisplatin-Induced Nephrotoxicity and Cachexia in CT26 Tumor-Bearing BALB/c Mice

## TL;DR

A combination of amaranth protein hydrolysate and Korean mint extract reduces kidney damage and muscle loss in mice undergoing chemotherapy for cancer.

## Contribution

A novel combination therapy using amaranth protein hydrolysate and Korean mint extract is shown to alleviate cisplatin-induced nephrotoxicity and cachexia in tumor-bearing mice.

## Key findings

- AKE reduced body weight loss and systemic inflammation in cisplatin-treated tumor-bearing mice.
- AKE preserved skeletal muscle and adipose tissue mass and improved renal function markers.
- AKE modulated protein turnover pathways and suppressed renal apoptosis in mice.

## Abstract

Background/Objectives: Cancer cachexia involves progressive skeletal muscle and adipose tissue loss, which is further aggravated by cisplatin chemotherapy via increased systemic inflammation, tissue catabolism, and renal toxicity. The present study aimed to evaluate whether a combination of amaranth protein hydrolysate and Agastache rugosa extract (AKE) could attenuate cisplatin-associated cachexia and nephrotoxicity in CT26 tumor-bearing mice. Methods: Cancer cachexia was induced by subcutaneous CT26 cell inoculation in 6-week-old male BALB/c mice, followed by a 7-day tumor establishment period. Cisplatin was then administered intraperitoneally, and AKE (125 or 250 mg/kg/day) was given daily by oral gavage for 14 days. Results: AKE administration significantly alleviated cisplatin-induced body weight loss and systemic inflammation, accompanied by preservation of skeletal muscle and adipose tissue mass, as well as increased myofiber cross-sectional area and adipocyte size. AKE markedly reduced serum inflammatory cytokines, blood urea nitrogen, and creatinine levels, indicating protection against cisplatin-induced renal injury. Mechanistically, AKE suppressed renal apoptosis through inhibition of mitogen-activated protein kinase signaling. In skeletal muscle, AKE attenuated muscle atrophy by modulating protein turnover pathways, including downregulation of muscle-specific ubiquitin ligases and restoration of Akt/mTOR and FoxO3a signaling. Furthermore, AKE mitigated adipose tissue wasting by suppressing AMP-activated protein kinase-dependent browning and restoring adipogenic signaling involved in lipid storage and differentiation. Conclusions: These findings demonstrate that AKE confers comprehensive protection against cisplatin-induced cachexia and nephrotoxicity by coordinately preserving muscle and adipose tissue and attenuating renal injury, suggesting its potential as a functional nutritional strategy to alleviate chemotherapy-associated tissue wasting.