Fibronectin-Functionalized Fibrous Meshes as a Substrate to Support Cultures of Thymic Epithelial Cells.

Abstract:

:Thymic epithelial cells (TECs) are the main regulators of T lymphocyte development and selection, requiring a three-dimensional (3D) environment to properly perform these biological functions. The aim of this work was to develop a 3D culture substrate that allows the survival and proliferation of TECs. Thus, electrospun fibrous meshes (eFMs) were functionalized with fibronectin, one of the major extracellular matrix (ECM) proteins of the thymus. For that, highly porous eFMs were activated using oxygen plasma treatment followed by amine insertion, which allows the immobilization of fibronectin through EDC/NHS chemistry. The medullary TECs presented increased proliferation, viability, and protein synthesis when cultured on fibronectin-functionalized eFMs (FN-eFMs). These cells showed a spread morphology, with increased migration toward the inner layers of FN-eFMs and the production of thymic ECM proteins, such as collagen type IV and laminin. These results suggest that FN-eFMs are an effective substrate for supporting thymic cell cultures.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Silva CS,Pinto RD,Amorim S,Pires RA,Correia-Neves M,Reis RL,Alves NL,Martins A,Neves NM

doi

10.1021/acs.biomac.0c00933

subject

Has Abstract

pub_date

2020-12-14 00:00:00

pages

4771-4780

issue

12

eissn

1525-7797

issn

1526-4602

journal_volume

21

pub_type

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