Decoding ischemic stroke: Perspectives on the endoplasmic reticulum, mitochondria, and their crosstalk

Area of Science:

• Neuroscience
• Cell Biology
• Pathology

Background:

• Ischemic stroke (IS) causes significant disability and mortality.
• Current IS treatments have limitations, including narrow therapeutic windows and adverse effects.
• Understanding IS pathomechanisms is crucial for developing novel therapies.

Purpose of the Study:

• To review the pathomechanisms of ER and mitochondria in IS.
• To highlight the functional crosstalk and physical connections (MERCs) between ER and mitochondria in IS.
• To provide insights for IS research and treatment.

Main Methods:

• Literature review of current research on ER-mitochondria interplay in IS.
• Focus on key mechanisms: Ca2+ homeostasis, ER stress, oxidative stress, mitochondrial quality control, and mitochondrial transfer.
• Analysis of mitochondrial-ER contacts (MERCs) in IS pathogenesis.

Main Results:

• Mitochondrial and ER dysfunction are central to IS progression.
• Disruptions in Ca2+ homeostasis, ER stress, oxidative stress, and mitochondrial quality control contribute to IS.
• Mitochondrial-ER contacts (MERCs) play a critical role in mediating ER-mitochondria crosstalk in IS.

Conclusions:

• ER-mitochondria crosstalk is a significant factor in IS pathology.
• Targeting ER-mitochondria interactions and MERCs may offer new therapeutic avenues for IS.
• Further research into these mechanisms can guide the development of improved IS treatments.