| miR-107 - MicroRNA-107
Abbreviation: miR-107
Type: MicroRNA / post-transcriptional gene-expression regulator
Function: miR-107 is a regulatory microRNA that suppresses target mRNAs through sequence-specific post-transcriptional repression. It influences cell-cycle control, metabolism, angiogenesis, migration, epithelial-mesenchymal transition, neuronal function, and amyloid precursor protein processing. One important neurological target is BACE1, the major β-secretase involved in amyloid-β production.
Cancer: ↕ Context-dependent. miR-107 functions as a tumor-suppressive microRNA in many experimental cancers, where increased miR-107 can inhibit proliferation, migration, invasion, angiogenesis, and epithelial-mesenchymal transition. However, oncogenic activity has also been reported in selected tumor types, so its effect depends on the dominant downstream targets and cellular context.
Alzheimer's Disease: ↓ Reduced miR-107 has been reported in Alzheimer's disease and may contribute to increased BACE1 expression and amyloidogenic APP processing. Increased miR-107 can suppress BACE1 and is therefore generally considered favorable for reducing amyloid-β production, although miR-107 also regulates additional neuronal and metabolic targets.
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