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The land plant-specific MIXTA-MYB lineage is implicated in the early evolution of the plant cuticle and the colonization of land

ABSTRACT: We studied gene expression changes in MIXTA-MYB overexpression and knock-out lines compared to the wild type.

ORGANISM(S): Marchantia polymorpha

PROVIDER: GSE155419 | GEO | 2021/12/31

REPOSITORIES: GEO

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The land plant-specific MIXTA-MYB lineage is implicated in the early evolution of the plant cuticle and the colonization of land

Project description:The land plant-specific MIXTA-MYB lineage is implicated in the early evolution of the plant cuticle and the colonization of land

| PRJNA649703 | ENA

MYB-regulated pancreatic cancer secretome

Project description:Earlier we have shown important roles of MYB in pancreatic tumor pathobiology. To better understand the role of MYB in the tumor microenvironment and identify MYB-associated secreted biomarker proteins, we conducted mass spectrometry analysis of the secretome from MYB-modulated and control pancreatic cancer cell lines. We also performed in silico analyses to determine MYB-associated biofunctions, gene networks and altered biological pathways. We further investigated the secreted proteins for their potential biomarker properties.

2021-09-08 | PXD015126 | Pride

MAZ induces MYB expression during the exit from quiescence via the E2F site in the MYB promoter

Project description:Most E2F-binding sites repress transcription through the recruitment of Retinoblasoma (RB) family members until the end of the G1 cell-cycle phase. Although the MYB promoter contains an E2F-binding site, its transcription is activated shortly after the exit from quiescence, before RB family members inactivation, by unknown mechanisms. We had previously uncovered a nuclear factor distinct from E2F, Myb-sp, whose DNA-binding site overlapped the E2F element and had hypothesized that this factor might overcome the transcriptional repression of MYB by E2F-RB family members. We have purified Myb-sp and discovered that Myc-associated zinc finger proteins (MAZ) are major components. We show that various MAZ isoforms are present in Myb-sp and activate transcription via the MYB-E2F element. Moreover, while forced RB or p130 expression repressed the activity of a luciferase reporter driven by the MYB-E2F element, co-expression of MAZ proteins not only reverted repression, but also activated transcription. Finally, we show that MAZ binds the MYB promoter in vivo, that its binding site is critical for MYB transactivation, and that MAZ knockdown inhibits MYB expression during the exit from quiescence. Together, these data indicate that MAZ is essential to bypass MYB promoter repression by RB family members and to induce MYB expression.

2017-10-04 | PXD006857 | Pride

Transcriptome sequencing of K562 cells stably expressing SUMO negative MYB

Project description:We expanded our previously reported transcriptome profiling of K-562 cells (GSE85187) by analyzing the global transcriptional change upon rescue of endogenous MYB knock down (KD) with SUMO-conjugation deficient mutant of MYB (2KR-MYB) and SUMO-binding deficient mutant of MYB (ANAA-MYB) in comparison with K-562 cells treated with siGENOME non-targeting siRNA (GSE85187) , endogenous MYB KD treated with si2992 (GSE85187), rescue of endogenous MYB KD with wild-type MYB (GSE85187) and rescue of endogenous MYB KD with D152V mutant of MYB (GSE85187).

2023-07-17 | GSE124542 | GEO

Evolution of Plant Na<sup>+</sup>-P-Type ATPases: From Saline Environments to Land Colonization.

Project description: Not available

| S-EPMC7911474 | biostudies-literature

Efficient genome editing in erythroid cells unveils novel MYB target genes and regulatory functions

Project description:Targeted genome editing holds great promise in biology. However, efficient genome modification, including gene knock-in, remains an unattained goal in multiple cell types and loci due to poor transfection efficiencies and low target genes expression, impeding the positive selection of recombined cells. Here, we describe a genome editing approach to achieve efficient gene targeting using hard to transfect erythroid cell lines. We demonstrate robust fluorescent protein knock-in efficiency in low expressed transcription factor gene loci (e.g. Myb or Zeb1). We further show the ability to target several genes in individual cells, exemplified by MYB-GFP and NuMA-Cherry double knock-in, allowing multicolor labeling of regulatory factors at physiological endogenous levels. Our knock-in tagging approach allowed us to perform genome-wide TF analysis at increased signal-to-noise ratios, and highlighted previously unidentified MYB target genes and pathways. Overall, we establish a versatile CRISPR-Cas9-based platform, offering attractive opportunities for the dissection of the erythroid differentiation process.

2023-07-24 | GSE228372 | GEO

A phenol-enriched cuticle is ancestral to lignin evolution in land plants.

Project description: Not available

| S-EPMC5344971 | biostudies-literature

Transcription profiling by array of Arabidopsis wild type and MYB knock out plants

Project description:Comparing the gene expression patterns between wild type plant (Col-0) and MYB knock-out plants.

2007-03-14 | E-ATMX-6 | biostudies-arrayexpress

Human induced pluripotent stem cell-derived macrophages share ontogeny with MYB-independent tissue-resident macrophages

Project description:Tissue-resident macrophages such as microglia, Kupffer and Langerhans cells derive from Myb-independent yolk sac (YS) progenitors generated before the emergence of hematopoietic stem cells (HSCs). Myb-independent YS-derived resident macrophages self-renew locally, independently of circulating monocytes and HSCs. In contrast, adult blood monocytes as well as infiltrating, gut and dermal macrophages derive from Myb-dependent HSCs. These findings are derived from the mouse, using gene knock-outs and lineage tracing, but their applicability to human development has not been formally demonstrated. Here we use human induced pluripotent stem cells (iPSCs) as a tool to model human hematopoietic development. By using a CRISPR-Cas9 knock-out strategy we show that human iPSC-derived monocytes/macrophages develop in a MYB-independent, RUNX1 and SPI1 (PU.1)-dependent fashion. This result makes human iPSC-derived macrophages developmentally related to and a good model for MYB-independent tissue-resident macrophages such as alveolar and kidney macrophages, microglia, Kupffer and Langerhans cells.

2017-01-07 | GSE93285 | GEO

Expression data after knockdown of MYB-NFIB and IGF1R/INSR inhibition in ACC cells

Project description:The MYB-NFIB gene is a driver-mutation in the majority of adenoid cystic carcinomas (ACCs) and believed to control a large number of genes involved in tumorigenesis. This experiment investigates the effects on gene expression after siRNA knock-down of MYB-NFIB and/or inhibition of IGF1R/INSR signaling in ACC cells.

2018-06-01 | GSE76094 | GEO

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