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Disección Molecular de Isquemia Permanente vs. Reperfusión: Divergencia Multi-Ómica e Implicaciones Terapéuticas de
Zhiyong Shen1, Yuxian Li1,2, Tengfei Zhu3
1School of Basic Medical Sciences, Hunan University of Medicine, No. 492, Jinxi South Road, Huaihua 418000, China.
Current issues in molecular biology
|January 30, 2026
Resumen
La lesión por isquemia-reperfusión cerebral (IRI) implica cambios moleculares únicos distintos de la isquemia permanente (IR). Las alteraciones proteómicas dominan la IRI, revelando nuevos objetivos terapéuticos para la neuroprotección en accidentes cerebrovasculares.
Área de la Ciencia:
- Neurociencia; Biología Molecular; Patología
Sus antecedentes:
- La lesión por isquemia-reperfusión cerebral (IRI) causa daño secundario después de la restauración del flujo sanguíneo, a diferencia de la isquemia permanente (IR).; La comprensión de los mecanismos moleculares distintos de la IRI y la IR es crucial para desarrollar terapias dirigidas para el accidente cerebrovascular.
Objetivo del estudio:
- Comparar exhaustivamente las firmas moleculares, incluida la expresión génica y la activación de proteínas, entre la IRI cerebral y la IR.; Identificar vías y biomarcadores específicos que impulsan la patología de la IRI y la IR.; Descubrir nuevas dianas terapéuticas para mitigar el daño neurológico inducido por la reperfusión.
Principales métodos:
- Se utilizó un enfoque transcriptómico y proteómico integrado.; Se comparó la isquemia permanente (IR, 24 h) con la isquemia-reperfusión (IRI, 1 h de isquemia + 24 h de reperfusión) modelos.; Se emplearon animales SHAM operados como controles.
Principales resultados:
- La IRI exhibió profundas alteraciones proteómicas con cambios transcripcripcionales mínimos, lo que indica una regulación postranscripcional significativa.; Se observaron respuestas inflamatorias y metabólicas compartidas tanto en IR como en IRI.; La IRI aumentó de forma única los genes neuroprotectores (Arc, Npas4) y activó vías específicas relacionadas con la reperfusión, junto con una remodelación distinta de la matriz extracelular.
Conclusiones:
- La IRI cerebral representa una trayectoria molecular adaptativa única, no solo una exacerbación del daño isquémico.; Se identificaron Pisd-ps3 y Saa3 como posibles dianas terapéuticas para la neuroprotección y la inmunomodulación en el accidente cerebrovascular isquémico.; Las firmas proteómicas pueden estratificar eficazmente diferentes fases de la lesión.
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