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THÔNG TIN TÀI LIỆU
Cấu trúc
Abstract
Background
Methods
Results
Conclusion
Background
Methods
Reagents
Animals
Isolation of mouse lung fibroblasts
Preparation of freshly isolated mouse lung fibroblasts for Flow Cytometry analysis of aSMA and Ki67
Collection and analysis of Flow Cytometry data
Evaluating the purity of the fibroblast isolate
Preparation of Lung tissue for Confocal Microscopy studies
Immunofluorescence and Confocal Microscopy Imaging
Analysis of PDGF-Ra and aSMA in images acquired by laser scanning confocal microscopy
Analysis of nuclear SMAD 2/3 in the alveolar region
Cell Culture
Assessing the effect of exogenous PDGF-AA and/or TGFb treatment on aSMA mRNA expression in Mlg Cells
Reverse Transcription of total RNA
Real-time quantitative PCR (RT-qPCR)
Statistics
Results
The abundance of PDGF-Ra-expressing fibroblasts, which display varied PDGF-Ra levels, changes during alveolar development
There is a positive correlation between fibroblast PDGF- Ra expression levels and proliferation at P4, but not P12
There is a positive correlation between fibroblast aSMA expression and proliferation at P4, but not at P12
Proliferating fibroblasts at P4 are more likely to express PDGF-Ra but not aSMA, and at P12, neither PDGF-Ra nor aSMA
PDGF-Ra and aSMA expression levels positively correlate in developing alveolar tissues
The "low" and "high" PDGF-Ra-expressing fibroblasts are similarly distributed at the alveolar entry ring and base
PDGF-A/PDGF-Ra signaling suppresses a-smooth muscle actin expression in a neonatal mouse lung fibroblast cell line
PDGF-AA/PDGF-Ra signaling represses the stimulatory effect of TGFb on aSMA expression, and TGFb releases aSMA from the PDGF-A-mediated suppressive effects
PDGF-Ra expression does not preclude nuclear localization of SMAD 2/3 during alveolar development