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Implantation of Fibrin Gel on Mouse Lung to Study Lung-specific Angiogenesis
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Effect of low VEGF on lung development and function.

May Zun Zaw Myint1, Jia Jia1, Salah Adlat1

  • 1Transgenic Research Center, Northeast Normal University, Changchun, Jilin, China.

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Summary

A new mouse model allows reversible control of vascular endothelial growth factor (VEGF) in the lungs. This model reveals VEGF

Keywords:
Lung developmentMouse modelTranscriptomeVEGFhSPC

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Area of Science:

  • Pulmonary Medicine
  • Developmental Biology
  • Genetics

Background:

  • Vascular endothelial growth factor (VEGF) is crucial for lung development and function.
  • Existing mouse models have limitations in studying the quantitative effects of VEGF.
  • The human SPC promoter is effective for lung-specific gene expression in transgenic models.

Purpose of the Study:

  • To generate a lung-specific and reversible VEGF repression mouse model.
  • To investigate the impact of reduced VEGF levels on lung development and pathogenesis.
  • To explore VEGF's role in immune activities within lung function.

Main Methods:

  • Created a transgenic mouse model (hspc-rtTRtg/+ /Vegf tetO/tetO) for inducible VEGF repression.
  • Utilized the human SPC promoter for lung-specific rtTR expression.
  • Administered doxycycline to control VEGF transcription and analyzed lung structure, gene expression, and protein levels.

Main Results:

  • Successfully generated a model for reversible, lung-specific VEGF inhibition.
  • Confirmed reduced VEGF expression and significant abnormalities in lung development and alveolarization.
  • Identified involvement of immune activities in VEGF-regulated lung functions via gene expression analysis.

Conclusions:

  • Epithelial-derived VEGF plays a critical role in lung development and function.
  • The developed mouse model accurately mimics human pulmonary diseases with abnormal VEGF levels.
  • This model is valuable for studying VEGF-related lung pathogenesis and for drug screening.