By Kyoto University –
Nanogel integrated spheroids increase cell retention and repair injured swallowing muscles
Kyoto, Japan — Swallowing is a fundamental human function that supports nutrition and communication. Damage to swallowing muscles can reduce quality of life and even lead to aspiration pneumonia or malnutrition. Many patients suffer from swallowing difficulties after being treated for head or neck cancer, and swallowing disorders are also common in older adults, yet effective therapies have been limited.
Stem cell therapy is considered a promising strategy for muscle repair, including the swallowing muscles, but so far it has not demonstrated the desired effect. Many transplanted cells die quickly after injection because they cannot survive in an injured environment. Spheroids, or three-dimensional cell clusters, are known to improve stem cell function, but large spheroids often develop a necrotic core due to limited oxygen and nutrient supply.
