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Transcriptomic analysis of first molars in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

ABSTRACT: Transcriptomic analysis of first molars in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

PROVIDER: PRJNA1198027 | ENA |

REPOSITORIES: ENA

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Transcriptomic analysis of first molars in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

Project description:Loeys Dietz Syndrome (LDS) is a connective tissue disorder caused by mutations along the TGF-beta signaling pathway and characterized by severe aortic aneurysm and craniofacial anomalies. Patients with LDS Type II (LDS2), caused by mutations in the TGFBR2 gene also exhibit enamel defects. A mouse model for LDS2, harboring a G357W mutation in the Tgfbr2 gene, recapitulates the cardiovascular, craniofacial and dental phenotype of the disease. This transcriptomic analysis aimed at identifying genes that are differentially regulated in first molars of Tgfbr2-G357W/+ mice at postnatal day 5 and 11. Total RNA was extracted from enamel organs from Tgfbr2-G357W/+ mice (LDSR2, KI) and Tgfbr2-+/+ wild-type littermates (WT).

2025-06-06 | GSE284226 | GEO

Transcriptomic analysis of enamel organ in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

Project description:Loeys Dietz Syndrome (LDS) is a connective tissue disorder caused by mutations along the TGF-beta signaling pathway and characterized by severe aortic aneurysm and craniofacial anomalies. Patients with LDS Type II (LDS2), caused by mutations in the TGFBR2 gene also exhibit enamel defects. A mouse model for LDS2, harboring a G357W mutation in the Tgfbr2 gene, recapitulates the cardiovascular, craniofacial and dental phenotype of the disease. This transcriptomic analysis aimed at identifying genes that are differentially regulated in the enamel organ of Tgfbr2-G357W/+ mice at postnatal day 11. Total RNA was extracted from enamel organs from five Tgfbr2-G357W/+ mice (LDSR2, KI) and eight Tgfbr2-+/+ wild-type littermates (WT). This dataset indicates that the mutation in Tgfbr2 in the enamel organ minimally affects gene expression and suggests that the enamel phenotype in LDS2 is not dependent on canonical TGF-beta signaling.

2025-06-06 | GSE226610 | GEO

Transcriptomic analysis of young aortic tissue in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

Project description:Loeys Dietz Syndrome (LDS) is a connective tissue disorder caused by mutations along the TGF-beta signaling pathway and characterized by severe aortic aneurysm and craniofacial anomalies. Patients with LDS Type II (LDS2), caused by mutations in the TGFBR2 gene also exhibit enamel defects. A mouse model for LDS2, harboring a G357W mutation in the Tgfbr2 gene, recapitulates the cardiovascular, craniofacial and dental phenotype of the disease. As part of our transcriptomic analysis aimed at identifying genes that are differentially regulated in the enamel organ of Tgfbr2-G357W/+ mice at postnatal day 11, we peformed a similar analysis on the aorta transcriptome at the same age. Total RNA was extracted from aortic arches from six Tgfbr2-G357W/+ mice (LDS2, Het) and five Tgfbr2-+/+ wild-type littermates (WT). This dataset provides a comprehensive list of genes affected in the aorta of an LDS2 mouse model at a young age.

2025-06-06 | GSE226611 | GEO

Transcriptomic analysis of enamel organ in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

Project description:Transcriptomic analysis of enamel organ in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

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Transcriptomic analysis of young aortic tissue in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

Project description:Transcriptomic analysis of young aortic tissue in a mouse model of Loeys-Dietz Syndrome Type II harboring a G357W mutation in the Tgfbr2 gene

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Chemokine Ligand 2 Expressing Fibroblast Recruitment of Macrophages Enhanced in Loeys-Dietz Syndrome Aortic Root Aneurysm Formation [human]

Project description:Loeys-Dietz Syndrome (LDS), caused by a spectrum of mutations in the TGF-β signaling cascade, leads to aggressive thoracic aneurysms. Given the ubiquitous nature of TGF-β signaling machinery, the exact cell type(s) responsible for initiation of LDS pathogenesis is poorly understood.

2025-04-23 | GSE235678 | GEO

Chemokine (C-C motif) Ligand 2 Expressing Adventitial Fibroblast Expansion During Loeys-Dietz Syndrome Aortic Aneurysm Formation [8wk mouse]

2025-03-25 | GSE288084 | GEO

Chemokine Ligand 2 Expressing Fibroblast Recruitment of Macrophages Enhanced in Loeys-Dietz Syndrome Aortic Root Aneurysm Formation [24wk mouse]

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Single-cell RNA sequencing data from hiPSC disease modeling of Loeys-Dietz Syndrome (LDS)

Project description:Single-cell RNA sequencing data from hiPSC disease modeling of Loeys-Dietz Syndrome (LDS)

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Intrinsic Gata4 expression sensitizes the aortic root to dilation in a Loeys-Dietz syndrome mouse model

Project description:Loeys-Dietz syndrome (LDS) is a hereditary aneurysm disorder caused by mutations that impair transforming growth factor-β (TGF-β) signaling. Although LDS patients develop aneurysms throughout the arterial tree, the aortic root is a site of increased risk. In order to identify molecular determinants of this regional vulnerability, we investigated the transcriptional heterogeneity of vascular smooth muscle cells (VSMCs) in the aorta of Tgfbr1M318R/+ LDS mouse models by single cell RNA sequencing (scRNAseq) and spatial transcriptomics. Downregulation of transcripts coding for components of the extracellular matrix-receptor mechanosensing apparatus and upregulation of transcripts related to stress and inflammation were observed in all Tgfbr1M318R/+ VSMCs. However, regardless of genotype, a subset of Gata4-expressing VSMCs predominantly located in the aortic root intrinsically displayed a less differentiated, pro-inflammatory transcriptional profile. A similar population was also identified in a published scRNAseq dataset of the aorta of LDS patients via the Coordinated Gene Activity in Pattern Sets (CoGAPS)/ProjectR pipeline. Postnatal VSMC-specific Gata4 deletion resulted in reduced aortic root dilation in LDS mice, in association with decreased levels of Agtr1a and other pro-inflammatory regulators. We propose that widespread dysregulation of mechanosensitive pathways may act on regionally restricted factors that “prime” specific aortic locations to increased risk of aneurysm.

2024-06-28 | GSE267204 | GEO

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