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Updated: May 12, 2026
Isolation of Human Primary Valve Cells for In vitro Disease Modeling
Published on: April 16, 2021
Comparative study of human aortic and mitral valve interstitial cell gene expression and cellular function
Wei Sun1, Rong Zhao, Yang Yang
1Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, PR China.
Insights
Human aortic valve interstitial cells (hAVICs) and mitral valve interstitial cells (hMVICs) exhibit distinct gene expression and cellular functions. hMVICs show higher proliferation and calcification susceptibility, revealing key differences in valvular cell behavior.
Area of Science:
- Cardiovascular Biology
- Cellular and Molecular Medicine
- Biomedical Research
Background:
- Valve interstitial cells (VICs) are crucial in heart valve pathogenesis.
- Direct comparative analysis of human aortic VICs (hAVICs) and mitral VICs (hMVICs) transcriptional profiles and functions is lacking.
Purpose of the Study:
- To compare the transcriptional profiles and cellular functions of hAVICs and hMVICs.
- To identify key genes and functional differences between these two cell types.
Main Methods:
- NimbleGen gene expression profiling was employed for hAVICs and hMVICs.
- Comparative analysis of cell proliferation, migration, and response to mineralization medium was performed.
Main Results:
- Seventy-eight genes were differentially expressed between hAVICs and hMVICs.
- hAVICs showed higher expression of NKX2-5, TBX15, CDKN1C, while hMVICs exhibited higher proliferation but increased susceptibility to in vitro calcification.
- Gene expression differences persisted in rheumatic VICs, excluding OGN and OMD.
Conclusions:
- Significant transcriptional and functional disparities exist between hAVICs and hMVICs.
- hMVICs demonstrate a greater propensity for calcification in vitro.
- These findings provide insights into valvular pathogenesis and cell-specific behavior.
Abstract:
Valve interstitial cells (VICs) are essential for valvular pathogenesis. However, the transcriptional profiles and cellular functions of human aortic VICs (hAVICs) and mitral VICs (hMVICs) have not been directly compared. We performed NimbleGen gene expression profiling analyses of hAVICs and hMVICs. Seventy-eight known genes were differentially expressed between hAVICs and hMVICs. Higher expression of NKX2-5, TBX15, OGN, OMD, and CDKN1C and lower expression of TBX5, MMP1, and PCDH10 were found in hAVICs compared to hMVICs. The differences in these genes, excepting OGN and OMD, remained in rheumatic VICs. We also compared cell proliferation, migration, and response to mineralization medium. hMVICs proliferated more quickly but showed more calcium deposition and alkaline phosphatase activity than hAVICs after culture in mineralization medium, indicating that hMVICs were more susceptible to in vitro calcification. Our findings reveal differences in the transcription profiles and cellular functions of hAVICs and hMVICs.
