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Rosmarinic acid alleviates radiation-induced pulmonary fibrosis by downregulating tRNA N7-Methylguanosine modification-regulated fibroblast to myofibroblast transition through the exosomes pathway

ABSTRACT: Rosmarinic acid alleviates radiation-induced pulmonary fibrosis by downregulating tRNA N7-Methylguanosine modification-regulated fibroblast to myofibroblast transition through the exosomes pathway

PROVIDER: PRJNA1049443 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27118336.fastq.gz	Fastqsanger.gz
	SRR27118337.fastq.gz	Fastqsanger.gz
	SRR27118338.fastq.gz	Fastqsanger.gz
	SRR27118339.fastq.gz	Fastqsanger.gz
	SRR27118340.fastq.gz	Fastqsanger.gz

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Rosmarinic acid alleviates radiation-induced pulmonary fibrosis by downregulating tRNA N7-Methylguanosine modification-regulated fibroblast to myofibroblast transition through the exosomes pathway [Ribo-Seq]

Project description:Radiation-induced pulmonary fibrosis (RIPF) is a common complication after radiotherapy in thoracic cancer patients, and there is a lack of effective treatment methods. The aim of this study was to explore the protective effect of rosmarinic acid (RA) on RIPF in mice as well as the underlying mechanism.We found that RA exerted an antifibrotic effect on lung tissues of RIPF mouse models and inhibited the progression of FMT through exosomes derived from lung epithelial cells. Mechanistically, RA reduced the transcription and translation efficiency of SPHK1 in lung fibroblasts by decreasing the tRNA N7-methylguanosine modification and downregulating the expression of tRNAs in lung epithelial cell-derived exosomes after irradiation, as well as inhibiting the interaction of SPHK1 with the NAT10 protein in fibroblasts. Furthermore, exosomes derived from irradiated lung epithelial cells after RA intervention decreased the acetylation and cytoplasmic translocation of PFKFB3, suppressing the FMT process triggered by glycolysis, and ultimately decelerating the progression of RIPF.

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Project description:Rosmarinic acid alleviates radiation-induced pulmonary fibrosis by downregulating tRNA N7-Methylguanosine modification-regulated fibroblast to myofibroblast transition through the exosomes pathway [mRNA-Seq]

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Project description:The project aims to identify the RNA binding proteins that can specifically bind to mRNA internal modification N7-methylguanosine (m7G). N7-methylguanosine (m7G) methylation has been long identified as the essential cap modification for eukaryotic mRNA, but later has been identified internally in various types of RNAs, including tRNA, rRNA, miRNA, and mRNA. While the METTL1/WDR4 complex, responsible for tRNA m7G installation, has been suggested to be responsible for internal mRNA modification as well, little is known about the proteins that can identify and interact with m7G. To better understand its interaction with RNA binding proteins and further define its regulatory function in mRNA metabolism, we performed the experiment to pulldown proteins with different binding affinity on unmodified G and m7G and subject the enriched fractions to mass spectrometry.

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