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Ascorbate enhances elastin synthesis in 3D tissue-engineered pulmonary fibroblasts constructs.

Kelsey E Derricks¹, Celeste B Rich, Jo Ann Buczek-Thomas

¹Department of Medicine, Boston University School of Medicine, Boston, MA, United States.

|May 8, 2013

Summary

This summary is machine-generated.

Ascorbate (Vitamin C) affects elastin synthesis differently based on cell environment. In 3D matrices, ascorbate significantly boosts elastin production, unlike in 2D cultures, revealing the importance of the extracellular matrix architecture.

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Area of Science:

Biochemistry
Cell Biology
Tissue Engineering

Background:

Extracellular matrix (ECM) remodeling is vital for tissue homeostasis.
Altered ECM remodeling is linked to chronic diseases like fibrosis and emphysema.
Ascorbate (Vitamin C) influences collagen and elastin, but its role in elastin synthesis is unclear.

Purpose of the Study:

To investigate the effect of ascorbate on elastin and collagen synthesis in pulmonary fibroblasts.
To compare ascorbate's impact in traditional 2D cell culture versus 3D extracellular matrix constructs.

Main Methods:

Primary rat neonatal pulmonary fibroblasts were cultured in 2D and 3D Gelfoam matrices.
Cells were treated with ascorbate.
Elastin and collagen synthesis (protein and mRNA levels) were analyzed.

Main Results:

Ascorbate showed minimal impact on elastin and collagen biosynthesis in 2D cultures.
Ascorbate treatment in 3D Gelfoam constructs led to a significant increase in elastin protein and mRNA.
Cell-ECM architecture critically influences cellular response to ascorbate.

Conclusions:

The cellular microenvironment, specifically the ECM architecture, dictates the response of pulmonary cells to ascorbate.
Strategies for ECM repair and engineered cell-derived matrices should consider the 3D cellular environment.