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Ciencia básica y patogénesis

Donghoon Lee1

  • 1Icahn School of Medicine at Mount Sinai, New York, NY, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Este estudio creó un gran atlas de células únicas del cerebro humano, revelando cambios moleculares compartidos en enfermedades neurodegenerativas como el Alzheimer y el Parkinson, e identificando posibles dianas terapéuticas.

Palabras clave:
Atlas del cerebro humanoEnfermedades neurodegenerativasBiología molecularGenómicaNeurociencia

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Área de la Ciencia:

  • Neurociencia
  • Genómica
  • Biología Molecular

Sus antecedentes:

  • Las enfermedades neurodegenerativas y neuropsiquiátricas representan un importante desafío para la salud pública.
  • La comprensión de los fundamentos moleculares de estos complejos trastornos cerebrales es limitada.

Objetivo del estudio:

  • Generar un atlas transcriptómico de células únicas a escala poblacional de la corteza prefrontal dorsolateral (DLPFC) humana.
  • Obtener una comprensión más profunda de la etiología de diversas enfermedades cerebrales, incluida la enfermedad de Alzheimer (AD), la enfermedad de Parkinson (PD) y la esquizofrenia.

Principales métodos:

  • Generó un atlas transcriptómico de células únicas de 1.494 donantes únicos, que comprende más de 6,3 millones de núcleos.
  • Analizó la variación transcriptómica en controles neurotípicos e individuos con ocho trastornos cerebrales comunes.

Principales resultados:

  • Identificó una variación sustancial en la expresión génica interindividual en la DLPFC.
  • Reveló firmas transcripcional es universales relacionadas con funciones celulares básicas en todas las enfermedades.
  • Demostró una fuerte concordancia genética y transcripcional entre AD, enfermedad de Lewy difusa (DLBD), demencia vascular (Vas) y PD, vinculada a la alteración de la señalización sináptica neuronal.
  • Caracterizó las variaciones transcripcional es específicas de AD, destacando los roles de las interneuronas, las células inmunes y vasculares, e identificó vínculos con las neuronas excitadoras de capas profundas.

Conclusiones:

  • El atlas desarrollado ofrece una perspectiva novedosa sobre el panorama transcriptómico de las enfermedades neurodegenerativas y neuropsiquiátricas.
  • Arrojó luz sobre procesos moleculares compartidos y distintos que involucran los sistemas neuroinmunes y vasculares.
  • Identificó posibles dianas terapéuticas para los trastornos cerebrales.