Transcription factor ZNF263 primes human embryonic stem cells for pluripotency dissolution and lineage commitment.

Area of Science:

• Stem cell biology
• Developmental biology
• Gene regulation

Background:

• Human embryonic stem cells (hESCs) possess a primed pluripotent state enabling differentiation.
• Mechanisms governing this primed state and the involved transcription factors (TFs) are not fully understood.
• Identifying TFs that orchestrate hESCs towards primed pluripotency is crucial.

Purpose of the Study:

• To investigate the role of transcription factor ZNF263 in pluripotency priming in hESCs.
• To elucidate how ZNF263 influences the balance between pluripotency maintenance and lineage commitment.
• To understand ZNF263's contribution to differentiation into primary germ layers.

Main Methods:

• Genetic assays to study ZNF263 function.
• Functional assays to assess pluripotency and differentiation.
• Single-cell transcriptomic profiling.
• Analysis of gene expression related to pluripotency and differentiation.

Main Results:

• ZNF263 directly initiates early differentiation gene expression in hESCs.
• ZNF263 dampens core pluripotency circuitry, favoring lineage priming.
• ZNF263 deficiency impairs pluripotency dissolution and multi-lineage differentiation, especially towards ectoderm.
• Single-cell transcriptomics shows ZNF263 promotes cell fate commitment priming.

Conclusions:

• ZNF263 is a key transcription factor in establishing the primed pluripotent state in hESCs.
• ZNF263 is essential for efficient pluripotency priming and lineage commitment.
• ZNF263 facilitates hESC differentiation into primary germ layer lineages.