Transcriptome and proteome characterization of surface ectoderm cells differentiated from human iPSCs

Area of Science:

• Stem cell biology
• Developmental biology
• Cell differentiation

Background:

• Surface ectoderm (SE) cells form critical human tissues like epidermis and appendages.
• Understanding SE development is key for regenerative medicine and disease modeling.

Purpose of the Study:

• To validate a protocol for inducing SE differentiation from human induced pluripotent stem cells (hiPSCs).
• To investigate the signaling pathways involved in SE differentiation.
• To differentiate SE cells from neural ectoderm cells.

Main Methods:

• Utilized BMP4 and the γ-secretase inhibitor DAPT for SE differentiation from hiPSCs.
• Performed integrated quantitative transcriptomic and proteomic profiling.
• Applied functional Ingenuity Pathway Analysis for computational analysis.

Main Results:

• hiPSC-derived SE cells expressed key lineage markers.
• TGFβ superfamily signaling pathways were preferentially activated in SE cells.
• Blocking TGFβ-RI signaling enhanced SE differentiation.
• Distinct gene expression and signaling networks were identified between SE and neural ectoderm cells.

Conclusions:

• The validated protocol effectively generates SE cells from hiPSCs.
• TGFβ signaling plays a crucial role in SE differentiation.
• Findings provide a foundation for SE-derived tissue development, disease studies, and regenerative medicine.