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Nuclear Receptor Transcription Factors promote axon regeneration in the Adult Corticospinal Tract
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Nuclear Receptor Transcription Factors promote axon regeneration in the Adult Corticospinal Tract

Yogesh Sahu, Soupayan Banerjee, Manojkumar Kumaran +10 more
June 2025
 ·
bioRxiv
 ·
DOI 
10.1101/2025.06.19.660319
94
%
Reproducible
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It ranks in the top 1% of preprints assessed in Neuroscience this quarter.
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Why this is interesting

Nominating NR2F1 and NR2F6 as potent CST regenerators restoring motor function after spinal crush, this work overturns the paradigm that neural repair requires transcriptional activation, revealing translational repression and 3D genome reconfiguration as regenerative mechanisms.

Author perspective

What is the most important insight, discovery, or finding from your paper that you would like other scientists to know?
“

The most important finding from our NRTF story is that developmental transcription factors NR2F1 and NR2F6 drive regenerative growth and promote functional recovery after Spinal Cord Injury. Rather than turning on a small set of growth-associated genes, these factors appear to trigger a broader resource re-allocation program: they massively downregulate global translation while selectively buffering the translation of transcripts needed for regeneration. This reveals a new mechanism in regenerative neuroscience, where successful CNS repair may depend not only on activating pro-growth genes, but also on reprioritizing the neuron’s biosynthetic resources toward repair.

”
Ishwariya Venkatesh

QED claims analysis

Summary

The nuclear receptor transcription factors NR2F1 and NR2F6 promote corticospinal tract regeneration and functional motor recovery after spinal cord injury through complementary mechanisms: NR2F1 re-activates developmental chromatin-remodeling and cytoskeletal programs, while NR2F6 operates via a conserved corepressor domain to impose broad translational repression, bind distal enhancers, and reorganize chromatin into new topologically associating domains that spatially cluster growth-associated genes with their regulatory elements.

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Main Claim 1 –

Developmental multi-omics nominate NR2F1/NR2F6 co-occupying pro-growth DNA

Supporting evidence

  • NR2F1 and NR2F6 double neurite length in Neuro-2A cells
  • NR2F1 and NR2F6 boost neurite outgrowth in primary cortical neurons
Main Claim 2 –

NR2F1 and NR2F6 enhance CST midline sprouting after pyramidotomy

Main Claim 3 –

NR2F1 and NR2F6 drive CST regeneration after complete thoracic crush

Supporting evidence

  • NR2F1/NR2F6 improve hip lift and grip after thoracic crush
Main Claim 4 –

NR2F1 and NR2F6 reprogram CST transcriptomes via distinct strategies

Supporting evidence

  • NR2F6 corepressor domain is required for neurite growth promotion
  • NR2F6 promotes growth via broad translational repression
  • NR2F6 preferentially binds distal enhancers and redeploys developmental programs
  • NR2F6 forms new TADs clustering growth genes and enhancers

Abstract

Transcription factors are potent levers for neural repair, but systematic pipelines to uncover factors that unlock adult corticospinal regeneration are lacking. By intersecting developmental RNA-seq with ATAC-seq footprints, we pinpointed two nuclear-receptor transcription factors—NR2F1 and NR2F6, neither previously linked to CNS axon growth—as top candidates. Forced expression of either factor doubled neurite length in culture, and each proved highly effective in vivo: after unilateral pyramidotomy they drove robust midline sprouting, while after complete thoracic crush they supported long-tract CST regeneration that restored hip lift, partial swing trajectories and grip strength. Multi-omics dissection revealed complementary mechanisms: NR2F1 re-engaged chromatin-remodelling and cytoskeletal networks, whereas NR2F6, via a conserved corepressor domain, imposed a broad translational down-shift, bound predominantly to distal enhancers and re-packaged chromatin into new topologically associating domains that cluster growth genes with freshly activated regulatory hubs. These discoveries establish NR2F1 and NR2F6 as novel pro-regenerative TFs, demonstrate their potency across lesion types, and expose repression-driven translational control and enhancer–TAD reconfiguration as previously unrecognised axes of CNS repair.

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