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Iron-sensitive RNA regulation by poly C binding proteins [RIP-Seq]

ABSTRACT: Iron is important for normal cellular function and posttranscriptional mechanisms regulate the cellular response to iron deficiency. In this study we explore how RNA binding proteins, PCBP1 and PCBP2, exhibit iron-sensitive RNA regulation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE302401 | GEO | 2025/09/26

REPOSITORIES: GEO

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Iron-sensitive RNA regulation by poly C binding proteins

Project description:Iron is important for normal cellular function and posttranscriptional mechanisms regulate the cellular response to iron deficiency. In this study we explore how RNA binding proteins, PCBP1 and PCBP2, exhibit iron-sensitive RNA regulation.

2025-09-26 | GSE279953 | GEO

Iron-sensitive RNA regulation by poly C binding proteins [DKD_RNASeq]

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The Poly(C) binding protein Pcbp2, and its retrotransposed derivative Pcbp1, are independently essential to mouse development

Project description:RNA-binding proteins participate in a complex array of post-transcriptional controls essential to cell-type specification and somatic development. Despite their detailed biochemical characterizations, the degree to which each RNA-binding protein impacts on mammalian embryonic development remains incompletely defined and the level of functional redundancy among subsets of these proteins remains open to question. The poly-(C) binding proteins, Pcbp's (aCPs, hnRNPEs), are encoded by a highly conserved and broadly expressed gene family. The two major Pcbp isoforms, Pcbp2 and Pcbp1, are robustly expressed in a wide range of tissues and exert both nuclear and cytoplasmic controls over gene expression. Here we report that Pcbp1-null embryos are rendered nonviable in the peri-implantation stage. In contrast, Pcbp2-null embryos survive until mid-gestation at which time they undergo a loss in viability associated with cardiovascular and hematopoietic abnormalities. Adult mice heterozygous for either Pcbp1 or Pcbp2 null alleles display a mild and non-disruptive growth defect. These data reveal that Pcbp1 and Pcbp2 are individually essential for mouse embryonic development and post-natal growth, reveal a non-redundant in vivo role for Pcpb2 in hematopoiesis, and provide direct evidence that Pcbp1, a retrotransposed derivative of Pcpb2, has evolved essential function(s) in the mammalian genome. mRNA-seq on fetal liver tissue from 12.5 days post coitum. 4 replicates of WT and 3 replicates of PCBP2 Knockout

2015-11-05 | E-GEOD-72491 | biostudies-arrayexpress

Iron-sensitive RNA regulation by poly C binding proteins [RIP-Seq]

Project description:Iron-sensitive RNA regulation by poly C binding proteins [RIP-Seq]

| PRJNA1290344 | ENA

The Poly(C) binding protein Pcbp2, and its retrotransposed derivative Pcbp1, are independently essential to mouse development

Project description:RNA-binding proteins participate in a complex array of post-transcriptional controls essential to cell-type specification and somatic development. Despite their detailed biochemical characterizations, the degree to which each RNA-binding protein impacts on mammalian embryonic development remains incompletely defined and the level of functional redundancy among subsets of these proteins remains open to question. The poly-(C) binding proteins, Pcbp’s (aCPs, hnRNPEs), are encoded by a highly conserved and broadly expressed gene family. The two major Pcbp isoforms, Pcbp2 and Pcbp1, are robustly expressed in a wide range of tissues and exert both nuclear and cytoplasmic controls over gene expression. Here we report that Pcbp1-null embryos are rendered nonviable in the peri-implantation stage. In contrast, Pcbp2-null embryos survive until mid-gestation at which time they undergo a loss in viability associated with cardiovascular and hematopoietic abnormalities. Adult mice heterozygous for either Pcbp1 or Pcbp2 null alleles display a mild and non-disruptive growth defect. These data reveal that Pcbp1 and Pcbp2 are individually essential for mouse embryonic development and post-natal growth, reveal a non-redundant in vivo role for Pcpb2 in hematopoiesis, and provide direct evidence that Pcbp1, a retrotransposed derivative of Pcpb2, has evolved essential function(s) in the mammalian genome.

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The Poly(C)-binding protein Pcbp2 is essential for CD4+ T cell development and proliferation.

Project description:Defining the molecular mechanisms that impact T cell maturation and function is important because abnormalities in these processes can lead to immunodeficient states or autoimmunity. RNA-binding proteins (RBPs) have emerged as critical factors in thymopoiesis, immune cell lineage commitment and maintenance, and as modulators of immune responses. The RBP paralogs Pcbp1 and Pcbp2 are widely expressed in the innate and adaptive immune systems and are each essential for mouse development. Pcbp1 has been shown to prevent conversion of CD4+ effector T cells into Foxp3+ regulatory T cells (Treg), with loss of Pcbp1 resulting in increased Treg differentiation. To determine whether Pcbp2 also is required for CD4+ T cell development and function, we derived mice with conditional Pcbp2 deletion in CD4+ T cells and assessed their overall phenotype and proliferative responses to activating stimuli. We found that Pcbp2 is essential for CD4+ T conventional cell (Tconv) proliferation, working through regulation of CD4 receptor co-stimulatory signaling. In addition, our data demonstrate a clear association between Pcbp2 control of Runx1 exon 6 splicing in CD4+ T cells and a specific role for Pcbp2 in the maintenance of peripheral CD4+ lymphocyte population size. Pcbp2 deficiency in the CD4+ lineage did not impact Treg abundance in vivo or function in vitro. Last, we show that Pcbp2 function is required for optimal in vivo Tconv cell activation in a T cell adoptive transfer colitis model system. These data lead us to conclude that Pcbp2 is a critical regulator of T cell signaling and function in the CD4+ lineage.

2022-12-29 | GSE197059 | GEO

Iron-sensitive RNA regulation by poly C binding proteins

Project description:Iron-sensitive RNA regulation by poly C binding proteins

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Next Generation Sequencing to determine the roles of RNA-binding proteins PCBP1 and PCBP2 on murine erythropoiesis

Project description:E14.5 fetal liver cells from CD-1 mice were enriched for hematopoietic progenitors. The purified hematopoietic progenitor cells were infected immediately with retroviruses encoding shRNAs that target Pcbp1, Pcbp2, as well as two sets of control shRNAs; Luciferase and scrambled sequence. The transduced cells were grown for 48 hours. These cells were collected (‘Day 0’ cells), or washed and resuspended in differentiation medium and incubated for an additional 2 days (‘Day 2’ cells). 1ug of total RNA isolated from ‘Day 0’ and ‘Day 2’ cells from each Pcbp1 or Pcbp2 depleted sample was used for cDNA library construction after polyA selection. A total of 9 samples were generated from each of the two time points: 3 controls; Pcbp1 knockdowns with three distinctly targeting shRNAs (sh1,3,4); Pcbp2 knockdown with three distinctly targeting shRNAs (sh1,3,4). Sequencing was carried out using a 150nt paired-end sequencing protocol.

2021-07-01 | GSE178247 | GEO

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