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Pluripotency Factors Modulate Interferon Signaling in Embryonic Stem Cells.

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This summary is machine-generated.

Pluripotent stem cells resist viruses by constitutively expressing antiviral genes, controlled by pluripotency factors that suppress interferon signaling. This balance preserves pluripotency while maintaining innate immunity.

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Area of Science:

  • Immunology
  • Stem Cell Biology
  • Virology

Background:

  • Pluripotent stem cells (PSCs) resist viral infections despite weak interferon responses.
  • Interferon signaling is incompatible with pluripotency maintenance, but mechanisms are unclear.

Purpose of the Study:

  • Investigate the transcriptional response of human embryonic stem cells (hESCs) to influenza A virus.
  • Elucidate the interplay between pluripotency and innate antiviral immunity.

Main Methods:

  • Single-cell RNA sequencing of hESCs infected with influenza A virus.
  • Functional studies involving gene depletion (e.g., SOCS1).

Main Results:

  • A subpopulation of hESCs responded to infection by expressing interferons and interferon-stimulated genes.
  • Interferon-responding cells showed reduced pluripotency factors and increased negative regulators (SOCS1, SPRY4).
  • SOCS1 depletion enhanced hESC interferon response; pluripotency factors regulate negative regulators of interferon signaling.

Conclusions:

  • Pluripotency transcriptional programs coordinate pluripotency factors, antiviral genes, and interferon signaling inhibitors.
  • This regulation allows PSCs to protect against viruses while maintaining differentiation potential.
  • Findings offer insights into innate immunity constraint in PSCs and inform stem cell therapies and antiviral strategies.