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Landscape of N6-methyladenosine modification patterns in invasive malignant pleomorphic adenoma

ABSTRACT: Landscape of N6-methyladenosine modification patterns in invasive malignant pleomorphic adenoma

PROVIDER: PRJNA679771 | ENA |

REPOSITORIES: ENA

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Landscape of N6-methyladenosine modification patterns in invasive malignant pleomorphic adenoma

Project description:N6-methyladenosine (m6A) is one of the most popular RNA modifications, which is widely found in messenger RNAs (mRNAs) .In our study,we provide m6A profiles of human invasive malignant pleomorphic adenoma, which open an avenue for in-depth knowledge and understanding of m6A topology in invasive malignant pleomorphic adenoma.

2021-03-10 | GSE161879 | GEO

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Project description:Invasive malignant pleomorphic adenoma (IMPA) results from the malignant transformation of pleomorphic adenoma (PA). The former is a high-grade malignant tumor, whereas the latter is a benign opposite. Study on the molecular mechanism in the progression of PA to IMPA will be of benefit to elucidate the reasons for different biological behaviors among these salivary gland tumors with the same origin. But there is no valuable and non-invasive biomarker to screen IMPA currently. Studies showed many salivary molecules can detect several systemic diseases. We aimed to investigate whether salivary mRNAs (mRNA) can act as a biomarker to detect IMPA.

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Project description:N6-methyladenosine (m6A) is the most abundant internal messenger (mRNA) modification in mammalian mRNA. This modification is reversible and non-stoichiometric, which potentially adds an additional layer of variety and dynamic control of mRNA metabolism. The m6A-modified mRNA can be selectively recognized by the YTH family “reader” proteins. The preferential binding of m6A-containing mRNA by YTHDF2 is known to reduce the stability of the target transcripts; however, the exact effects of m6A on translation has yet to be elucidated. Here we show that another m6A reader protein, YTHDF1, promotes ribosome loading of its target transcripts. YTHDF1 forms a complex with translation initiation factors to elevate the translation efficiency of its bound mRNA. In a unified mechanism of translation control through m6A, the YTHDF2-mediated decay controls the lifetime of target transcripts; whereas, the YTHDF1-based translation promotion increases the translation efficiency to ensure effective protein production from relatively short-lived transcripts that are marked by m6A. PAR-CLIP and RIP was used to identify YTHDF1 binding sites followed by ribosome profling and RNA seq to assess the consequences of YTHDF1 siRNA knock-down

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