QualiCell® Human Neuronal Stem Cells (Cortex) -XLC466

Human neuronal stem cells derived from the fetal cerebral cortex—typically isolated at 6–9 weeks of gestation and expanded as neurospheres or adherent cultures—are regionally specified progenitors that preserve the molecular identity of the dorsal telencephalon. Although often referred to as cortical neural stem cells (NSCs), their defining property is the intrinsic commitment to generate cortical projection neurons, interneurons, and glia in proportions that recapitulate human cortical lamination.

Their advantages rest on three pillars. First, stable regional specification – cortical NSCs maintain a PAX6/EMX2‑positive forebrain signature through prolonged passaging. Upon differentiation, they preferentially yield glutamatergic (TBR1+/CTIP2+) pyramidal neurons and calretinin‑positive GABAergic interneurons, a profile distinct from NSCs of spinal or midbrain origin. This regional bias is retained even after xenotransplantation, ensuring predictable graft composition.

Second, exceptional neurogenic capacity – unlike adult or spinal NSCs, cortical NSCs exhibit high proliferative output and generate outer radial glial cells (oRGs), a human‑enriched progenitor population critical for cortical expansion. This enables modelling of human‑specific neurodevelopmental processes—including gyration and layer formation—that are absent in rodent systems.

Third, robust engraftment and functional integration – in stroke and traumatic brain injury models, transplanted cortical NSCs survive, migrate along corticofugal tracts, differentiate into mature neurons that form synaptic contacts with host circuits, and promote behavioural recovery. This therapeutic efficacy, coupled with their amenability to CRISPR‑based gene editing, positions them as an unparalleled platform for disease modelling (e.g., microcephaly, autism, epilepsy) and high‑content drug screening.