M6A/YTHDF1 modulates CAP1-mediated actin turnover and synaptic function to regulate anxiodepressive-like behaviors [RNA methylation]
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PROVIDER: PRJNA1312118 | ENA |
REPOSITORIES: ENA
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Project description:Neuroplasticity and synaptic dysfunction are central to depression, yet the underlying mechanisms remain poorly understood. While m6A and its reader YTHDF1 regulate mRNA translation, neuroplasticity and learning behaviors, their role in affective disorders such as depression remains unexplored. This study identifies YTHDF1 as a key regulator of depression pathogenesis. Genetic deletion of YTHDF1 in mice caused anterior cingulate cortex (ACC) hyperactivity, heightened social stress sensitivity, and anxiodepressive-like behaviors after acute social stress. Using multi-omic approaches, we uncovered a critical role for actin cytoskeleton dynamics and identified cyclase-associated protein 1 (CAP1) as a downstream effector of YTHDF1. Loss of YTHDF1 reduced CAP1 expression from early postnatal stages, resulting in F-actin accumulation, impaired synaptic function, and behavioral deficits. Strikingly, early postnatal YTHDF1 re-expression in the ACC restored CAP1 levels, synaptic integrity, and reversed depressive-like phenotypes. These findings establish the m6A/YTHDF1/CAP1 axis as a critical pathway regulating synaptic function and depression.
2025-09-01 | GSE306850 | GEO
Project description:Neuroplasticity and synaptic dysfunction are central to depression, yet the underlying mechanisms remain poorly understood. While m6A and its reader YTHDF1 regulate mRNA translation, neuroplasticity and learning behaviors, their role in affective disorders such as depression remains unexplored. This study identifies YTHDF1 as a key regulator of depression pathogenesis. Genetic deletion of YTHDF1 in mice caused anterior cingulate cortex (ACC) hyperactivity, heightened social stress sensitivity, and anxiodepressive-like behaviors after acute social stress. Using multi-omic approaches, we uncovered a critical role for actin cytoskeleton dynamics and identified cyclase-associated protein 1 (CAP1) as a downstream effector of YTHDF1. Loss of YTHDF1 reduced CAP1 expression from early postnatal stages, resulting in F-actin accumulation, impaired synaptic function, and behavioral deficits. Strikingly, early postnatal YTHDF1 re-expression in the ACC restored CAP1 levels, synaptic integrity, and reversed depressive-like phenotypes. These findings establish the m6A/YTHDF1/CAP1 axis as a critical pathway regulating synaptic function and depression.
2025-09-01 | GSE306790 | GEO
Project description:Neuroplasticity and synaptic dysfunction are central to depression, yet the underlying mechanisms remain poorly understood. While m6A and its reader YTHDF1 regulate mRNA translation, neuroplasticity and learning behaviors, their role in affective disorders such as depression remains unexplored. This study identifies YTHDF1 as a key regulator of depression pathogenesis. Genetic deletion of YTHDF1 in mice caused anterior cingulate cortex (ACC) hyperactivity, heightened social stress sensitivity, and anxiodepressive-like behaviors after acute social stress. Using multi-omic approaches, we uncovered a critical role for actin cytoskeleton dynamics and identified cyclase-associated protein 1 (CAP1) as a downstream effector of YTHDF1. Loss of YTHDF1 reduced CAP1 expression from early postnatal stages, resulting in F-actin accumulation, impaired synaptic function, and behavioral deficits. Strikingly, early postnatal YTHDF1 re-expression in the ACC restored CAP1 levels, synaptic integrity, and reversed depressive-like phenotypes. These findings establish the m6A/YTHDF1/CAP1 axis as a critical pathway regulating synaptic function and depression.
2025-09-01 | GSE306789 | GEO
Project description:m6A/YTHDF1 modulates CAP1-mediated actin turnover and synaptic function to regulate anxiodepressive-like behaviors
| PRJNA1312510 | ENA
Project description:m6A/YTHDF1 modulates CAP1-mediated actin turnover and synaptic function to regulate anxiodepressive-like behaviors [RIP-Seq]
| PRJNA1312117 | ENA
Project description:Serum response factor (SRF) is a ubiquitously expressed transcription factor that is essential for brain development and function. SRF activity is controlled by two competing classes of coactivators, myocardin-related transcription factors (MRTF) and ternary complex factors, which introduce specificity into gene expression programs. Here, we explored the MRTF-mediated regulatory mechanism in mouse cortical neurons. Using gene-reporter assays and pharmacological and genetic approaches in isolated mouse cortical neurons, we found that cyclase-associated protein 1 (CAP1) repressed neuronal MRTF-SRF activity. CAP1 promoted cytosolic retention of MRTF by controlling cytosolic G-actin levels that required its helical folded domain and its CARP domain. This function of CAP1 was not redundant with that of its homolog CAP2 and was independent of cofilin1 and actin-depolymerizing factor. Deep RNA sequencing and mass spectrometry in cerebral cortex lysates from CAP1 knockout (CAP1-KO) mice supported the in vivo relevance for the CAP1-actin-MRTF-SRF signaling axis. Our study identified CAP1 as a repressor of neuronal gene expression and led to the identification of likely MRTF-SRF target genes in the developing cerebral cortex, whose dysregulation may contribute to impaired formation of neuronal networks in CAP1-KO mice. Together with our previous studies that implicated CAP1 in actin dynamics in axonal growth cones or excitatory synapses, we established CAP1 as a crucial actin regulator in neurons.
2024-03-22 | GSE262154 | GEO
Project description:Serum response factor (SRF) is a ubiquitously expressed transcription factor that is essential for brain development and function. SRF activity is controlled by two competing classes of coactivators, myocardin-related transcription factors (MRTF) and ternary complex factors, which introduce specificity into gene expression programs. Here, we explored the MRTF-mediated regulatory mechanism in mouse cortical neurons. Using gene-reporter assays and pharmacological and genetic approaches in isolated mouse cortical neurons, we found that cyclase-associated protein 1 (CAP1) repressed neuronal MRTF-SRF activity. CAP1 promoted cytosolic retention of MRTF by controlling cytosolic G-actin levels that required its helical folded domain and its CARP domain. This function of CAP1 was not redundant with that of its homolog CAP2 and was independent of cofilin1 and actin-depolymerizing factor. Deep RNA sequencing and mass spectrometry in cerebral cortex lysates from CAP1 knockout (CAP1-KO) mice supported the in vivo relevance for the CAP1-actin-MRTF-SRF signalling axis. Our study identified CAP1 as a repressor of neuronal gene expression and led to the identification of likely MRTF-SRF target genes in the developing cerebral cortex, whose dysregulation may contribute to impaired formation of neuronal networks in CAP1-KO mice. Together with our previous studies that implicated CAP1 in actin dynamics in axonal growth cones or excitatory synapses, we established CAP1 as a crucial actin regulator in neurons.
2025-01-14 | PXD051147 | Pride
Project description:Cap1p, a transcription factor of the basic region-leucine zipper family, controls the oxidative stress response in Candida albicans. It was shown that alteration of the C-terminal cysteine-rich domain (CRD) of Cap1p results in nuclear retention and constitutive transcriptional activation. To further characterize the function of Cap1p in C. albicans, we used genome-wide location profiling (ChIP-on-chip), allowing the identification of Cap1p-transcriptional targets in vivo. Location profiling using a tiled-oligonucleotide DNA microarray identified 89 targets that were bound by Cap1p-HA3 or Cap1p-CSE-HA3 (binding ratio ⥠2-fold, P ⤠0.01). Strikingly, Cap1p binding was not only detected at the promoter region of its target genes but also at their 3'-end and within their open-reading frame. Overrepresented functional groups of Cap1p targets (P ⤠0.02) included notably 11 genes involved in response to oxidative stress (CAP1, GLR1, TRX1, others), 13 genes involved in response to drug (PDR16, MDR1, FLU1, others) and 3 genes involved in regulation of nitrogen utilization (orf19.2693, orf19.3121 and GST3). Bioinformatic analyses suggested that Cap1p binds to the DNA motif 5'- MTKASTMA. Transcriptome analyses showed that increased expression of most of Cap1p targets accompanies Cap1p binding at these targets, indicating that Cap1p is a transcriptional activator. We conclude that, in addition to protecting the cell against oxidative stress, Cap1p appears to have other functions including drug resistance and the regulation of nitrogen utilization. The atypical binding pattern of Cap1p suggests that this transcription factor may associate with the transcriptional or the chromatin remodeling machinery to exert its activity. We performed three gene expression profile comparisons: (1) benomyl-induced gene expression in a strain containing wildtype CAP1 (CJD21/PMK-CAP1 +/- benomyl), (2) benomyl-induced gene expression in a strain where CAP1 is disrupted (CJD21/PMK +/- benomyl), and (3) gene expression in a strain containing a hyperactive allele of CAP1 compared to a strain containing wildtype CAP1 (CJD21/PMK-CAP1-CSE vs. CJD21/PMK-CAP1). There were three biological replicates (each drug-treated and untreated strain was grown/treated in three independent experiments). Since our Affymetrix platform requires each sample is hybridized on a separate chip, there is no dye-swapping. For each benomyl-treatment experiment (comparisons 1 and 2 above), the untreated (diluent-treated) samples are the reference samples. For comparison 3, the CJD21-PMK-CAP1 sample is the reference sample.
2010-05-18 | E-GEOD-14258 | biostudies-arrayexpress
Project description:The CAP1 represses MRTF-SRF–dependent gene expression in the mouse cerebral cortex by an actin-dependent mechanism
| PRJNA1090484 | ENA
Project description:The pulmonary capillary endothelial cells (ECs) consist of two populations, CAP1 and CAP2; how each population reacts to diverse tissue injury is incompletely understood. Using single-cell multiome and genetic lineage tracing, we characterize the induction and function of a truncated isoform of Ntrk2, Ntrk2-tk (lacking the tyrosine kinase domain), in multiple lung injury models in mice. Upon Sendai parainfluenza infection, Ntrk2-tk is activated in CAP1 across the whole lung after the initial interferon response, associated with increased intronic accessibility, and persists for weeks after injury. Ntrk2-tk ECs arise from CAP1 but not CAP2, traced by KitCreER and Car4CreER, respectively, and proliferate and give rise to CAP1 but not CAP2, as traced by Ntrk2CreER. EC-specific deletion of Ntrk2 has little molecular and cellular consequences in response to Sendai and H3N2 viral infection. Our data identifies Ntrk2-tk as an EC marker of lung injury-repair and enhances our understanding of EC heterogeneity.
2025-06-20 | GSE261082 | GEO