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Related Experiment Video

Updated: Feb 17, 2026

The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia

The Colon-26 Carcinoma Tumor-bearing Mouse as a Model for the Study of Cancer Cachexia

Published on: November 30, 2016

Tumor-Derived Polyamines Initiate Fat Wasting in Cancer Cachexia.

Matias Fabregat¹, Rachel J Fenske², Julia K Hansen¹

¹Department of Medicine, University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA.

Biorxiv : the Preprint Server for Biology

|February 16, 2026

Summary

This summary is machine-generated.

Cancer-associated cachexia (CC) involves early fat wasting driven by tumor-derived polyamines. This polyamine-dependent crosstalk promotes lipolysis, offering a potential biomarker for early detection and intervention in cancer patients.

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Published on: July 20, 2019

Area of Science:

Oncology
Metabolic Disorders
Molecular Biology

Background:

Cancer-associated cachexia (CC) is a fatal metabolic condition with poorly understood early molecular drivers.
CC involves progressive loss of fat and muscle mass, significantly impacting patient outcomes.

Purpose of the Study:

To identify early molecular drivers of cancer-associated cachexia.
To investigate the role of polyamines in tumor-adipose crosstalk during pre-cachexia.

Main Methods:

Utilized preclinical models to study polyamine accumulation and its effect on adipocytes.
Analyzed extracellular vesicles for cancer-derived polyamine enrichment.
Employed automated CT imaging in newly diagnosed pancreatic cancer patients to assess adipose tissue density.
Correlated polyamine levels with clinical data and patient survival.

Main Results:

Identified a polyamine-dependent tumor-adipose crosstalk triggering adipocyte lipolysis and fat wasting in the pre-cachexia stage.
Demonstrated that cancer-derived polyamines, enriched in extracellular vesicles, promote lipid mobilization via eIF5A hypusination, independent of adrenergic signaling.
Observed that polyamine accumulation in preclinical models correlates with early fat loss and elevated circulating fatty acids.
Found that increased adipose density in pancreatic cancer patients correlates with circulating polyamine levels and predicts poor survival.

Conclusions:

Polyamine metabolism is a mechanistic driver of early cancer-associated cachexia.
Circulating polyamine levels serve as a candidate biomarker for early cachexia detection.
These findings provide a framework for developing early detection strategies and targeted interventions for cancer cachexia.