Project description:Lung smooth muscle cells are including bronchiolar and vascular smooth muscle cells. In order to get adult lung smooth muscle cells, we use transgenic mouse line with smooth muscle actin creERT2, which is a transgenic cre recombinase in Acta2 (contractile smooth muscle cell gene). This mouse line also contains a CAG promoter-driven red fluorescent protein variant (tdTomato) - all inserted into the ROSA26 locus. This mouse line express robust tdTomato fluorescence following cre-mediated recombination after Tamoxifen injection.
Project description:Tet3 was deleted in smooth muscle cells by tamoxifen-induced Cre-recombination in 8 weeks old mice. Laser-capture microdissection was used to isolate bronchiolar or vascular tissue from lung sections of 16 weeks old mice for transcriptome analysis.
Project description:RNA-seq analysis of pulmonary arterial smooth muscle cells (PASMCs), bronchial smooth muscle cells(BSMCs) and venous SMCs in the lung
Project description:Thiele2013 - Smooth muscle smooth muscle cells
The model of smooth muscle smooth muscle cells metabolism is derived from the community-driven global reconstruction of human metabolism (version 2.02, MODEL1109130000
).
This model is described in the article:
A community-driven global reconstruction of human metabolism.
Thiele I, et al
.
Nature Biotechnology
Abstract:
Multiple models of human metabolism have been reconstructed, but each represents only a subset of our knowledge. Here we describe Recon 2, a community-driven,
consensus 'metabolic reconstruction', which is the most comprehensive representation of human metabolism that is applicable to computational modeling. Compared
with its predecessors, the reconstruction has improved topological and functional features, including ~2x more reactions and ~1.7x more unique metabolites. Using
Recon 2 we predicted changes in metabolite biomarkers for 49 inborn errors of metabolism with 77% accuracy when compared to experimental data. Mapping metabolomic
data and drug information onto Recon 2 demonstrates its potential for integrating and analyzing diverse data types. Using protein expression data, we automatically
generated a compendium of 65 cell type-specific models, providing a basis for manual curation or investigation of cell-specific metabolic properties. Recon 2 will
facilitate many future biomedical studies and is freely available at http://humanmetabolism.org/.
This model is hosted on BioModels Database
and identified by: MODEL1310110025
.
To cite BioModels Database, please use: BioModels Database: An enhanced,
curated and annotated resource for published quantitative kinetic models
.
To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer
to CC0 Public Domain Dedication
for more information.
Project description:Smooth muscle differentiation has been proposed to sculpt airway epithelial branches in mammalian lungs. Serum response factor (SRF) acts with its cofactor myocardin to promote the expression of contractile smooth muscle markers. However, smooth muscle cells exhibit a variety of phenotypes beyond contractile that are independent of SRF-myocardin-induced transcription. To determine whether airway smooth muscle exhibits phenotypic plasticity during embryonic development, we deleted Srf from the pulmonary mesenchyme. Srf-mutant lungs branch normally, and the mesenchyme exhibits normal cytoskeletal features and patterning. scRNA-seq revealed an Srf-null smooth muscle cluster wrapping the airways of mutant lungs that lacks contractile smooth muscle markers but retains many features of control smooth muscle. Srf-null airway smooth muscle exhibits a synthetic phenotype, compared to the contractile phenotype of wildtype airway smooth muscle. Our findings reveal plasticity in mesenchymal differentiation during lung development and demonstrate that a synthetic smooth muscle layer is sufficient for airway branching morphogenesis.
Project description:Vascular smooth muscle cells (VSMCs) phenotype switch has been thought to be critical to the development of thoracic aneurysm/dissection. To investigate the function HDAC9 in the regulation of VSMCs phenotype switch, we used siRNA knockdown of HDAC9 in human aortic smooth muscle cells (HASMC)we established Human aortic smooth muscle cells (HASMCs).
Project description:None of the currently available Cre recombinase-expressing mouse lines allows for exclusive and specific manipulation of non-vascular smooth muscle cells (NVSMCs). To address this, we focused on the Chrm2 gene, which encodes the M2 muscarinic acetylcholine receptor (M2R), a G protein-coupled receptor (GPCR) previously reported to be expressed selectively in NVSMCs and also in CD45-positive immune cells. In contrast, Acta2 is broadly and strongly expressed in all smooth muscle cells (SMCs), including both vascular and non-vascular populations. To achieve specific labeling of NVSMCs, we generated NVSMC-effector mice by combining Chrm2-Dre with Acta2-Rox-CreER and R26-LoxP-GFP alleles. Following tamoxifen administration, we observed robust GFP fluorescence specifically in NVSMCs of the lung, stomach, and intestine. Notably, GFP labeling was virtually absent in vascular SMCs across multiple organs, confirming the specificity of this genetic strategy.