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Updated: Oct 5, 2025

An Experimental System to Study Mechanotransduction in Fetal Lung Cells

An Experimental System to Study Mechanotransduction in Fetal Lung Cells

Published on: February 16, 2012

Surfactant Protein-A Function: Knowledge Gained From SP-A Knockout Mice.

Lynnlee Depicolzuane¹, David S Phelps¹, Joanna Floros^1,2

¹Departments of Pediatrics, Hershey, PA, United States.

Frontiers in Pediatrics

|January 24, 2022

Summary

This summary is machine-generated.

Surfactant protein A (SP-A) is crucial for lung immunity and surfactant function. SP-A knockout mice reveal its vital roles in host defense against infections and lung injury, impacting alveolar macrophages and overall lung health.

Keywords:

SP-A animal model host defense infection injury innate immunity respiratory distress syndrome surfactant

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Alveolar Macrophage Phagocytosis and Bacteria Clearance in Mice

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Published on: March 2, 2019

Area of Science:

Pulmonary immunology
Innate immunity
Lung biology

Background:

Pulmonary surfactant proteins are vital for lung function and host defense.
Surfactant protein A (SP-A) modulates alveolar macrophages and epithelial cells, influencing the alveolar microenvironment.
SP-A is essential for surfactant structure and function.

Purpose of the Study:

To comprehensively review the functions of SP-A in lung health and disease.
To highlight the insights gained from SP-A knockout (KO) mouse models.
To explore SP-A's role in host defense, lung injury responses, and sex-based differences.

Main Methods:

Review of studies utilizing SP-A knockout (KO) mouse models.
Analysis of infection models (bacterial, viral, fungal).
Examination of models for lung injury (bleomycin, ozone) and oxidative stress.

Main Results:

SP-A KO mice exhibit altered responses to various lung insults, including infections and injury.
SP-A modulates alveolar macrophage function and epithelial cell interactions.
SP-A plays a role in sex differences in immune responses and baseline lung conditions.

Conclusions:

SP-A is a critical regulator of innate immunity and lung homeostasis.
SP-A knockout mouse models are indispensable for understanding SP-A's multifaceted roles.
Further research into SP-A's mechanisms can inform therapeutic strategies for lung diseases.