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Islr regulates satellite cells asymmetric division through Sparc/p-ERK1/2 signaling pathway

ABSTRACT: Islr regulates satellite cells asymmetric division through Sparc/p-ERK1/2 signaling pathway

PROVIDER: PRJNA868366 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21007603_1.fastq.gz	Fastqsanger.gz
	SRR21007603_2.fastq.gz	Fastqsanger.gz
	SRR21007604_1.fastq.gz	Fastqsanger.gz
	SRR21007604_2.fastq.gz	Fastqsanger.gz
	SRR21007605_1.fastq.gz	Fastqsanger.gz

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Islr regulates satellite cells asymmetric division through Sparc/p-ERK1/2 signaling pathway

Project description:Satellite cells are adult muscle stem cells responsible for muscle regeneration after acute or chronic injuries. The balance between stem cell self-renewal and differentiation impacts the kinetics and efficiency of skeletal muscle regeneration. This study elucidated the function of Islr in satellite cell asymmetric division. Satellite cell specific deletion of Islr compromises muscle regeneration in adult mice by impairing the satellite cell pool. Islr is pivotal for satellite cell proliferation and its deletion promotes asymmetric cell fate segregation of satellite cells. A mechanistic search revealed that Islr interacts and stabilizes the Sparc protein, which activates p-ERK1/2 signaling required for asymmetric division. In combination, the findings have identified Islr as a key regulator of satellite cell asymmetric division through the Sparc/p-ERK1/2 signaling pathway, which provides a new insight into satellite cell biology and open avenues for the treatment of myopathy.

2023-08-16 | GSE210951 | GEO

Asymmetric cancer cell division regulated by AKT, Reactive Oxygen Species (ROS) high versus ROS low mRNA

Project description:Human tumors often contain slowly proliferating cancer cells that resist treatment but we do not know precisely how these cells arise. We show that rapidly proliferating cancer cells can divide asymmetrically to produce slowly proliferating “G0-like” progeny that are enriched following chemotherapy in breast cancer patients. Asymmetric cancer cell division results from asymmetric suppression of AKT/PKB kinase signaling in one daughter cell during telophase of mitosis. Moreover, inhibition of AKT signaling with small molecule drugs can induce asymmetric cancer cell division and the production of slow proliferators. Cancer cells therefore appear to continuously flux between symmetric and asymmetric division depending on the precise state of their AKT signaling network. This model may have significant implications for understanding how tumors grow, evade treatment, and recur. 3 replicates each of MCF7 Reactive Oxygen Species (ROS) high, HCT116 ROS high, MCF7 ROS low, and HCT116 ROS low.

2011-07-14 | E-GEOD-30465 | biostudies-arrayexpress

Gene expression of CD8 T cell progenies generated via asymmetric cell division

Project description:Asymmetric partitioning of fate-determinants is a mechanism that contributes to T cell differentiation. However, it remained unclear whether the ability of T cells to divide asymmetrically is influenced by their differentiation state, as well as if enforcing asymmetric cell division rates would have an impact on T cell differentiation and memory formation. Using the murine LCMV infection model, we established a correlation between cell stemness and the ability of CD8+ T cells to undergo asymmetric cell division (ACD). Transient mTOR inhibition proved to increase ACD rates in naïve and memory cells, and to install this ability in exhausted CD8+ T cells. Functionally, enforced ACD correlated with increased memory potential, leading to more efficient recall response and viral control upon acute or chronic LCMV infection. Moreover, transient mTOR inhibition also increased ACD rates in human CD8+ T cells. Transcriptional profiling of first daughter cells, obtained by sorting CD8lo and CD8hi cells after in vitro stimulation, revealed that progenies emerging from enforced ACD exhibited more pronounced early memory signatures, which functionally endowed these cells with strengthened memory features.

2019-02-14 | E-MTAB-7651 | biostudies-arrayexpress

Asymmetric cancer cell division regulated by AKT, Reactive Oxygen Species (ROS) high versus ROS low mRNA

2011-07-15 | GSE30465 | GEO

APT1 regulates the asymmetric partitioning of Notch and Wnt signaling during cell division

Project description:Asymmetric cell division results in two distinctly fated daughter cells to generate cellular diversity. A major molecular hallmark of an asymmetric division is the unequal partitioning of cell-fate determinant proteins. We have previously established that growth factor signaling promotes protein depalmitoylation to foster polarized protein localization, which in turns drives migration and metastasis. Here, we report protein palmitoylation as a key mechanism for the asymmetric partitioning of the cell-fate determinants Numb (Notch antagonist) and β-catenin (canonical Wnt regulator) through the activity of a depalmitoylating enzyme, APT1. Using point mutants, we show specific palmitoylated residues on proteins, such as Numb, are required for asymmetric localization. Furthermore, by live-cell imaging, we show that reciprocal interactions between APT1 and CDC42 regulate the asymmetric localization of Numb and β-catenin to the plasma membrane. This in turn restricts Notch and Wnt transcriptional activity to one daughter cell. Moreover, we show altering APT1 expression changes the transcriptional signatures to those resembling that of Notch and β-catenin in MDA-MB-231 cells. We also show loss of APT1 depletes the population of CD44+/CD24lo/ALDH+ tumorigenic cells in colony formation assays. Together, the findings of this study demonstrate that palmitoylation, via APT1, is a major mechanism of asymmetric cell division regulating Notch and Wnt-associated protein dynamics, gene expression, and cellular functions.

2018-05-09 | GSE105486 | GEO

Fate induction in CD8 chimeric antigen receptor T-cells through asymmetric cell division

Project description:Early expansion and long-term persistence predict efficacy of chimeric antigen receptor T-cells (CARTs), but mechanisms governing effector versus memory CART differentiation and whether asymmetric cell division (ACD) induces differential fates in human CARTs remain unclear. We use target-induced proximity labeling to isolate first-division proximal--daughter and distal-daughter CARTs to interrogate TCR clonality, surface proteome, and transcriptome at the single-cell level.

2024-09-27 | GSE268878 | GEO

Joint single-cell multiomic analysis identifies Aebp2 as a key regulator in Wnt3a induced asymmetric stem cell division

Project description:Wnt signal usually functions as a spatial gradient. A localized Wnt3a can induce asymmetric division of mouse embryonic stem cells, whereas proximal daughter cells maintain self-renew and distal daughter cells acquire hallmarks of differentiation. Here, we develop an approach, SET-seq (same cell epigenome and transcriptome sequencing), to jointly profile epigenome and transcriptome in the same single cell. By utilizing SET-seq, we profile H3K27me3 and H3K4me3 with gene expression in Wnt3a induced asymmetric cell division. H3K27me3, but not H3K4me3, is correlatedly changed with gene expression. Single cells clustered by H3K27me3 recapitulate the clusters defined by gene expression. Furthermore, Aebp2, which is the regulator of H3K27me3, is important for the cell-fate decision with localized Wnt signal. Our results provide a convenient way to jointly profile epigenome and transcriptome in the same cell, and uncover the mechanistic insights into the gene regulatory programs for maintaining and resetting stem cell fate during differentiation.

2021-09-05 | GSE168637 | GEO

The SHR/SCR pathway directly activates genes involved in asymmetric cell division in the Arabidopsis root

Project description:Asymmetric division of cortex/endodermal initials (CEI) in the Arabidopsis root generates two layers of ground tissue and is controlled by a finely orchestrated interplay between the transcription factors, SHORT ROOT (SHR) and SCARECROW (SCR). To understand the dynamics of the SHR/SCR regulatory network we performed microarray time course experiments using inducible versions of SHR and SCR and examined their transcriptional effects specifically in the ground tissue. Keywords: SHR and SCR time course and CEI cell-type analyses

2010-07-19 | GSE15876 | GEO

Cell type-specific attenuation of brassinosteroid signaling precedes stomatal asymmetric cell division

Project description:Cell type-specific attenuation of brassinosteroid signaling precedes stomatal asymmetric cell division

| PRJNA796288 | ENA

Gene expression of CD8 T cell progenies generated via asymmetric cell division

Project description:Gene expression of CD8 T cell progenies generated via asymmetric cell division

| PRJEB31160 | ENA