FOXD3

Overview

FOXD3 is a forkhead-box transcription factor that marks multipotent Schwann cell precursors (SCPs) and neural crest cells. In neuroblastoma research, FOXD3 is used as a canonical SCP marker to distinguish the Schwann cell precursor-derived origin hypothesis from alternative progenitor models.

Alterations observed in the corpus

  • The novel postnatal human adrenal gland progenitor cluster hC1 lacks the canonical SCP markers FOXD3, SOX10, and S100B; this absence indicates that hC1 is distinct from the SCP population and represents a novel human-specific progenitor type PMID:34493726.
  • The high-risk undifferentiated neuroblastoma nC3 cluster similarly shows no significant shared gene signature with SCP or mouse E12–E13 sympathoblast populations (Fisher’s exact test), indicating that high-risk neuroblastoma may not arise from canonical SCP-like progenitors PMID:34493726.

Cancer types (linked)

  • NBL — FOXD3-negative status of the hC1 progenitor and the high-risk nC3 tumor cluster challenges the prevailing SCP-origin model for neuroblastoma PMID:34493726.

Co-occurrence and mutual exclusivity

Therapeutic relevance

  • Not directly targeted; FOXD3 absence in hC1/nC3 is used as a negative-selection criterion to distinguish these populations from SCPs and to argue for an alternative cell-of-origin for high-risk neuroblastoma PMID:34493726.

Open questions

  • Whether the absence of SCP markers (FOXD3, SOX10, S100B) in hC1 is sufficient to rule out an SCP developmental relationship, or merely reflects transcriptional maturation, is not resolved PMID:34493726.

Sources

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