NEAT1
Overview
NEAT1 (Nuclear Enriched Abundant Transcript 1) is an abundant nuclear lncRNA that is an essential structural component of nuclear paraspeckles. NEAT1 plays roles in regulating gene expression, mRNA retention, and stress responses. In muscle-invasive bladder cancer, NEAT1 expression levels characterize a specific molecular subtype associated with better prognosis.
Alterations observed in the corpus
- NEAT1 lncRNA expression was elevated in lncRNA cluster 3 of muscle-invasive bladder cancer (n=408), a better-survival subset of the luminal-papillary mRNA subtype; this cluster was depleted in TP53 mutations, enriched in FGFR3 mutations and fusions, and consisted of high-purity, papillary histology, organ-confined tumors PMID:28988769
Cancer types (linked)
- BLCA (Bladder Urothelial Carcinoma): NEAT1 expression was high in lncRNA cluster 3, co-elevated with MALAT1, NORAD (LINC00657), DANCR, GAS5, and UCA1 in a prognostically favorable MIBC subset PMID:28988769
Co-occurrence and mutual exclusivity
- High NEAT1 expression co-occurred with MALAT1, NORAD, DANCR, GAS5, and UCA1 upregulation in the luminal-papillary lncRNA cluster 3 MIBC subset; low ZNF667-AS1 (MORT) and LINC00152 expression were also characteristic PMID:28988769
Therapeutic relevance
- No direct targeted therapy for NEAT1 alterations in bladder cancer is reported in the corpus; NEAT1 expression may serve as a biomarker for luminal-papillary MIBC subtype classification.
Open questions
- Whether elevated NEAT1 in luminal-papillary MIBC reflects a causal role in tumor biology or is a marker of luminal differentiation status requires functional investigation.
Sources
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