Disease Name |
Alzheimer Disease |
Nocoding RNA Name |
hsa-miR-26b |
Expression Pattern |
up-regulated |
Species |
Homo sapiens |
Detection Methods |
qRT-PCR,Western Blot,Luciferase Reporter Assay etc. |
Target |
Rb1 |
Tissue |
brain |
Treatment |
N/A
|
PubMed ID |
24027266 |
Year |
2013 |
Detail Description |
Ectopic overexpression of miR-26b in rat primary postmitotic neurons led to the DNA replication and aberrant cell cycle entry (CCE) and, in parallel, increased tau-phosphorylation, which culminated in the apoptotic cell death of neurons. Similar tau hyperphosphorylation and CCE are typical features of neurons in pre-AD brains.Sequence-specific inhibition of miR-26b in culture is neuroprotective against oxidative stress. Retinoblastoma protein (Rb1), a major tumor suppressor, appears as the key direct miR-26b target, which mediates the observed neuronal phenotypes. The downstream signaling involves upregulation of Rb1/E2F cell cycle and pro-apoptotic transcriptional targets, including cyclin E1, and corresponding downregulation of cell cycle inhibitor p27/Kip1.Elevated levels of miR-26b may thus contribute to the AD neuronal pathology. |
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