Method Optimization of Skin Biopsy-Derived Fibroblast Culture for Reprogramming Into Induced Pluripotent Stem Cells.

Area of Science:

• Cell Biology
• Stem Cell Research
• Biobanking

Background:

• Fibroblasts are crucial for generating induced pluripotent stem cells (iPSCs).
• Optimizing fibroblast isolation and cryopreservation is essential for iPSC reprogramming efficiency and biobank standards.

Purpose of the Study:

• To identify the optimal protocol for skin biopsy dissociation, fibroblast culture, and cryopreservation.
• To ensure successful reprogramming into iPSCs and meet biobank accreditation requirements.

Main Methods:

• Evaluated four dissociation techniques (explant-based, enzymatic, mechanical) and two cryopreservation media.
• Assessed post-thaw recovery, viability, growth, karyotyping, and reprogramming quality.
• Compared iPSC pluripotency post-thaw.

Main Results:

• Explant-based and enzymatic dissociation yielded fibroblasts with higher viability, proliferation, and genome stability.
• Explant-based dissociation showed slightly superior reprogramming quality and iPSC clone recovery.
• No significant difference was found between commercial and homemade cryopreservation media.

Conclusions:

• The explant-based dissociation technique is recommended for isolating and cryopreserving skin fibroblasts for iPSC reprogramming.
• This optimized protocol supports biobank accreditation and efficient downstream applications.