Nuclear paraspeckle assembly transcript 1 (NEAT1)

Nuclear paraspeckle assembly transcript 1 (NEAT1) is a long non-coding RNA that serves as the scaffolding structural molecule necessary for the formation of paraspeckles, a type of membraneless nuclear body involved in the spatial regulation of gene expression[1][6][7]. NEAT1 exists in two major isoforms: NEAT1_1 (~3,700 nt) and NEAT1_2 (~23,000 nt), with NEAT1_2 being essential for paraspeckle formation in mammals[1][4]. NEAT1 modulates cellular stress responses via sequestration of various transcription/regulatory proteins, influences chromatin structure, and acts as a competing endogenous RNA to control microRNA networks[2][5]. Its expression is dynamically regulated in response to multiple stressors including viral infection, proteasome inhibition, and mechanical stimuli[1][3][4]. NEAT1 is implicated as a central regulatory hub in oncogenesis, autoimmunity, and other stress-related conditions, making it a promising biomarker and therapeutic target for cancer and inflammatory diseases[2][5][6].

Other names

MENε/βLINC00084VINCTP53LC15TncRNAnuclear enriched abundant transcript 1long intergenic non-protein coding RNA 84virus inducible non-coding RNANCRNA00084trophoblast derived non-protein coding RNAtrophoblast MHC class II suppressortrophoblast-derived noncoding RNA

Knockdown by siRNA/shRNA: inhibits NEAT1 expression and paraspeckle assembly[2]. Antisense oligonucleotides (ASOs): disrupt NEAT1 and paraspeckle formation[1]. Epigenetic modulation: drugs impacting DNA methylation or Polycomb repressive complex (EZH2) may indirectly affect NEAT1's network[2].