ArticleCommunications biology2026
Proximity labeling unveils potential roles of the Miro2-CISD1 network in mitochondrial dynamics and neuronal differentiation.
Article in Communications biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Adult hippocampal neurogenesis, crucial for maintaining neural homeostasis, is integral to neurodegeneration. We previously identified Miro2 as a key regulator of mitochondrial dynamics and survival in hippocampal neural stem cells with potential relevance to Alzheimer's disease. Here, using TurboID-based proximity labeling, we explore Miro2's interaction networks and identify sixty-six unique interactors specific to hippocampal neural stem cells. Functional enrichment analysis reveals that these proteins are crucial for mitochondrial organization, transport, and neurodegeneration. CISD1 emerges as a significant interaction partner. Knockdown of Miro2 and CISD1 impairs mitochondrial trafficking in adult hippocampal stem cells, disrupted stem cell differentiation with increased cytotoxicity. Rescue experiments partially reverse cell death, and both Miro2 and CISD1 show increased expression and interaction during differentiation. These findings suggest the Miro2-CISD1 axis as a critical regulator of mitochondrial remodeling and neurogenesis, providing a framework for future studies on how mitochondrial dynamics contribute to neurodegenerative disease mechanisms.
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