The present invention relates to a novel injectable delivery system for stem cell therapy, which comprises a thermo-sensitive amphiphlic chitosan nanogel. Therefore, the invention provides a method for repairing a tissue damage of a subject using the amphiphlic chitosan nanogel served as a carrier for delivering the stem cells to the damaged tissue. This invention also provides a method for sustaining the growth of stem cells using the amphiphlic chitosan nanogel served as a niche or scaffold.本發明關於一種新的幹細胞療法注射傳輸系統,該系統使用溫度感應型雙性幾丁聚醣奈米膠。因此,本發明提供一種修復組織損傷的方法,以雙性幾丁聚醣奈米膠作為載體來輸送幹細胞到受損的組織。本發明亦提供一種利用雙性幾丁聚醣奈米膠作為棲位或支架來維持幹細胞生長的方法。
