What determines layer-specific vulnerability of CUX2/RORB excitatory neurons in AD progression?

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Composite

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Novelty

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Mechanistic

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Druggability

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Priority

85%

Importance

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Tractability

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Market price

50%

Description

The debate identified these neurons as selectively vulnerable but did not resolve the molecular basis for their susceptibility. Understanding this could reveal early intervention targets before widespread neuronal loss.

Source: Debate session sess_SDA-2026-04-03-gap-seaad-v3-20260402063622 (Analysis: SDA-2026-04-03-gap-seaad-v3-20260402063622)

Resolution criteria

Resolution requires: (1) Patch-seq (electrophysiology + RNA-seq) of CUX2+ and RORB+ neurons from AD brains (n>=10) demonstrating layer-specific electrophysiological and molecular signatures; (2) optogenetic or chemogenetic manipulation of layer-specific vulnerability genes in organotypic brain slice cultures from AD mouse models, showing whether rescuing vulnerability genes reduces pathology by >=40%; (3) layer-specific proteomic mapping (laser capture microdissection) identifying >=5 druggable molecular targets unique to vulnerable layers. Observation of vulnerability without mechanistic dissection is insufficient.

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