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A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [Ribo-seq]

ABSTRACT: A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [Ribo-seq]

PROVIDER: PRJNA1028618 | ENA |

REPOSITORIES: ENA

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A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [Ribo-seq]

Project description:In this study we examine the role of RACK1 MARylation in stress granule assembly and translational regulation in ovarian cancer cells. In addition, we describe the role of TARG1, an ADPR hydrolase enzyme in stress granule assembly and translation.

2025-01-02 | GSE245503 | GEO

A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [RNA-seq]

2025-01-02 | GSE245502 | GEO

A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells

Project description:A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells

| PRJNA1028614 | ENA

A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [RNA-seq]

Project description:A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells [RNA-seq]

| PRJNA1028613 | ENA

A PARP14/TARG1-Regulated RACK1 MARylation Cycle Drives Stress Granule Dynamics in Cancer Cells

Project description:This SuperSeries is composed of the SubSeries listed below.

2025-01-01 | GSE245504 | GEO

RACK1 function in the miRNA pathway

Project description:MicroRNAs (miRNAs) regulate plant development by post-transcriptional regulation of target genes. In Arabidopsis thaliana, DCL1 processes precursors (pri-miRNAs) to miRNA duplexes, which associate with AGO1. Additional proteins act in concert with DCL1 (e.g. HYL1 and SERRATE) or AGO1, respectively, to facilitate efficient and precise pri-miRNA processing and miRNA loading. In this study, we show that the accumulation of plant microRNAs depends on RECEPTOR FOR ACTIVATED C KINASE 1 (RACK1), a scaffold protein found in all higher eukaryotes. miRNA levels are reduced in rack1 mutants and our data suggest that RACK1 affects the microRNA pathway via several distinct mechanisms involving direct interactions with known microRNA factors: RACK1 ensures the accumulation and processing of some pri-miRNAs, directly interacts with SERRATE and is part of an AGO1 complex. As a result, mutations in RACK1 lead to misregulation of miRNA target genes, which is important for ABA responses and phyllotaxy. In conclusion, our study discovered complex functioning of RACK1 proteins in the Arabidopsis miRNA pathway, which are important for miRNA production and therefore plant development.

2013-07-01 | GSE40579 | GEO

Inhibition of PARP14 restores response to α-PD1 immune checkpoint inhibition in tumours with resistance driven by IFNγ. PARP14 study.

Project description:While immune checkpoint blockade therapy (ICBT) benefits cancer patients, many fail to maintain their response due to adaptive resistance mechanisms. IFNγ is critical for cellular immunity, but also promotes adaptive resistance to ICBT. We have established a role for PARP14 in mediating IFNγ-induced adaptive resistance. We confirm that chronic pre-treatment of tumour cells with IFNγ confers resistance to α-PD-1 antibodies in syngeneic mouse tumour models. We identified that PARP14 was consistently upregulated in cancer cells treated chronically with IFNγ as well as in IFNγ-high melanoma samples. Further, we showed that PARP14 knockdown or pharmacological inhibition restores sensitivity to α-PD-1 antibodies accompanied by increased immune cell infiltration into tumours but the decreased presence of regulatory T cells. RNA sequencing analysis of tumours and cultured cells treated with PARP14 inhibitor showed an upregulation of inflammatory-related pathways. In conclusion, PARP14 is an actionable target for reversing IFNγ-driven adaptive resistance to ICBT.

2023-08-08 | E-MTAB-12195 | biostudies-arrayexpress

AGS-RACK1

Project description:MicroRNA microarray profiling analysis was performed on human gastric cancer AGS cells after RACK1 silenced or not

2016-03-01 | E-MTAB-2619 | biostudies-arrayexpress

HGC-RACK1

Project description:MicroRNA microarray profiling analysis was performed on human gastric cancer HGC cells after RACK1 silenced or not

2016-03-01 | E-MTAB-3484 | biostudies-arrayexpress

The role of Rack1 in microglia in AD

Project description:We found that Rack1 increased in microglia in AD mouse model. Conditional knockout of Rack1 in microglia reduced Aβ aggregation, alleviated neuroinflammation, and rescued cognitive impairments in AD mouse model. Mechanism investigation revealed that knockout of Rack1 in microglia decreased microglial numbers but increased astrocytic numbers and phagocytic activities via IGF1-IGF1R signaling.

2024-06-30 | GSE256191 | GEO

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