Stem Cell Size Control via NAC Culture Medium
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Solution Overview
Problem
Current methods for preparing stem cells for intravascular administration are inadequate, as existing stem cells are often too large, interfering with blood flow and circulation, and may form thrombi, limiting their therapeutic effectiveness.
Innovation Solution
Culturing stem cells in a medium containing a basal medium supplemented with N-acetyl-L-cysteine, insulin or insulin-like factor, hydrocortisone, basic fibroblast growth factor, and antioxidants to achieve a diameter of 11-16 μm, allowing for safe and effective intravascular administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If stem cells are cultured using conventional methods, then stem cells can be obtained for transplantation, but the stem cells become too large (diameter >20 μm) to be suitable for intravascular administration
Solution Approach 1:
The invention changes the chemical parameters of the culture medium by adding specific components (NAC, insulin, hydrocortisone, bFGF, and antioxidants) to control stem cell size. This chemical parameter modification enables stem cells to maintain a diameter of 1-16 μm, making them suitable for intravascular administration while preserving their therapeutic functions.
2Ease of operation
If stem cells are administered intravascularly when they are too large, then cell therapy can be performed, but blood flow is reduced and thrombi may form
Solution Approach 1:
The invention performs preliminary size control during the stem cell culture process by optimizing medium composition. This preliminary action ensures that stem cells reach the appropriate size (1-16 μm) before administration, preventing blood flow reduction and thrombi formation during intravascular delivery while maintaining therapeutic effectiveness.
Data Source
AI summary
The present invention relates to a method for preparing stem cells having a size suitable for intravascular administration, and preferably to a method for preparing stem cells with a diameter ranging from 11-16 μm. Additionally, the present invention relates to media composition for preparing stem cells having a size suitable for intravascular administration. According to the present invention, stem cells having a size suitable for intravascular administration can be prepared such that stem cells administered into a vein can stably reach a target tissue, and thus can more efficiently increase efficacy displaying activity, thereby innovatively enhancing the efficacy of cell therapy using stem cells.