Use Of A Capillary Alginate Gel (Capgel™) To Study The Three-Dimensional Development Of Sensory Nerves Reveals The Formation Of A Rudimentary Perineurium

Keywords

Myelin; Nerve guide; Nerve regeneration; Nerve tissue engineering; Neuron; Perineurium

Abstract

Background: Peripheral neuropathies affect approximately 20 million people in the United States and often stem from other chronic conditions, such as diabetes. In vitro methodologies to facilitate the understanding and treatment of these disorders often lack the cellular and functional complexity required to accurately model peripheral neuropathies. In particular, they are often 2D and fail to faithfully reproduce the 3D in vivo microenvironment. New method: Embryonic dorsal root ganglion (DRG) explants were inserted into laminin derivatized capillary alginate gel (Capgel™), a bioabsorbable, self-assembling biomaterial, possessing parallel microchannel architecture, and cultured to mimic normal nerve development, including Schwann cell myelination. Results: Laminin derivatization of the microchannels improved nerve growth through the gel. Axon bundles containing myelinating Schwann cells migrated through the gel and were ensheathed by rudimentary perineurium up to 1 mm from the DRG explant site. Comparison with existing methods: Other nerve models are two-dimensional in nature and/or fail to conserve the complicated architecture and cellular milieu observed in vivo. Our nerve model shows the simple culture technique of cells grown in 3D, which allows for a more advanced structural organization that more accurately mimics the in vivo nerve fascicle. Conclusions: When embryonic DRG explants are cultured in this system, they show a striking resemblance to in vivo peripheral nerve fascicles, including myelinated axons and the formation of a rudimentary perineurium, suggesting that both neuronal and non-neuronal cells within the DRG explant are capable of recreating the 3D structure of a developing sensory fascicle within the microchannel architecture.

Publication Date

7-15-2018

Publication Title

Journal of Neuroscience Methods

Volume

305

Number of Pages

46-53

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.jneumeth.2018.05.003

Socpus ID

85047218687 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85047218687

This document is currently not available here.

Share

COinS