Neural differentiation, selection and transcriptomic profiling of human neuromesodermal progenitor-like cells in...

Area of Science:

• Developmental Biology
• Stem Cell Biology
• Neuroscience

Background:

• Directed differentiation protocols for human pluripotent cells are crucial for developmental studies.
• Neuromesodermal progenitors (NMPs) are key in vertebrate development, contributing to mesoderm and spinal cord.
• Existing methods for in vitro human spinal cord progenitor generation are limited.

Purpose of the Study:

• To establish robust in vitro protocols for human spinal cord progenitor differentiation.
• To identify conserved and human-specific transcriptional signatures of NMPs.
• To provide resources for studying human spinal cord development.

Main Methods:

• Transient dual-SMAD inhibition combined with retinoic acid (dSMADi-RA) treatment.
• CRISPR-Cas9 engineering of human embryonic stem cells with an NMP-associated gene (Nkx1.2) reporter.
• RNA-sequencing for transcriptional profiling.

Main Results:

• Rapid and reproducible induction of human spinal cord progenitors from NMP-like cells using dSMADi-RA.
• Identification of NMP transcriptional signatures in human cells.
• Validation of the differentiation protocol and discovery of new neural differentiation pathways.

Conclusions:

• The dSMADi-RA protocol offers an efficient method for generating human spinal cord progenitors.
• The developed reporter line and transcriptomic data are valuable for dissecting human spinal cord development.
• This work facilitates large-scale cell population generation for further molecular analyses.