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NOP10 predicts NSCLC prognosis and its associated small nucleolar RNAs drive proliferation and migration [PSI-seq]

ABSTRACT: Non-coding RNAs are critical players in non-small cell lung cancer (NSCLC). In the present study, we investigate the role of H/ACA box snoRNA and snoRNA-bound ribonucleoproteins (RNP) in the tumorigenesis of NSCLC.

ORGANISM(S): Homo sapiens

PROVIDER: GSE161231 | GEO | 2020/11/17

REPOSITORIES: GEO

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NOP10 predicts NSCLC prognosis and its associated small nucleolar RNAs drive proliferation and migration [ncRNA-seq]

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Regulated snoRNA expression during differentiation corresponds with a change in ribosomal RNA pseudouridylation and altered pre-ribosomal RNA processing [Nano77]

Project description:H/ACA small nucleolar RNAs (snoRNAs) guide pseudouridylation as part of a small nucleolar ribonucleoprotein complex (snoRNP). Disruption of H/ACA snoRNA expression in stem cells impairs pluripotency, yet it remains unclear how H/ACA snoRNAs contribute to differentiation. To determine if H/ACA snoRNA expression is dynamic during differentiation, we comprehensively profiled H/ACA snoRNA expression in multiple murine cell types and during differentiation in three cellular models, including mouse embryonic stem cells and mouse myoblasts. We determined that H/ACA snoRNA expression is cell-type specific, and we identified a subset of snoRNAs that are specifically regulated during differentiation. Additionally, we demonstrated that a decrease in Snora27 expression upon differentiation corresponds to a decrease in pseudouridylation of its target site within the E-site transfer RNA (tRNA) binding region of the 28S ribosomal RNA (rRNA) in the large ribosomal subunit. Many of the snoRNAs regulated during differentiation have target nucleotides in the 28S rRNA, and we found that pre-rRNA processing of large subunit precursors is altered during differentiation. Together, these data suggest a model in which H/ACA snoRNAs are specifically regulated during differentiation to potentially alter pseudouridylation and fine tune ribosome function.

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