Developmentof an Anisotropically Organized Brain dECM Hydrogel-Based 3D Neuronal CulturePlatform for Recapitulating the Brain Microenvironment in Vivo

Title
Developmentof an Anisotropically Organized Brain dECM Hydrogel-Based 3D Neuronal CulturePlatform for Recapitulating the Brain Microenvironment in Vivo
Authors
김수현정영미최낙원정지홍서유진정소현
Issue Date
2020-01
Publisher
ACS biomaterials science & engineering
Citation
VOL 6-620
Abstract
To mimic the brain tissue microenvironment in vitro, the biological and structural properties of the utilized system must be similar to those of the native brain in the microenvironment in vivo. To promote the bioactive (biological) properties of matrix hydrogels, we used the decellularized extracellular matrix (dECM) of porcine brain, which was found to enhance neuronal differentiation/outgrowth and neuron-to-brain dECM interactions. To implement the desired structural properties, we aligned microfibrils within a composite hydrogel mixed with the brain dECM and collagen I, with or without encapsulated neurons, by the stretching and releasing of a hydrogel-based chip. We then tested the ability of the aligned brain dECM hydrogel-based three-dimensional (3D) culture platform to mimic the in vivo brain microenvironment. We found that dECM-containing gels harbored brain-derived ECM proteins, including collagen I, collagen IV, laminin, and various cytokines, and that neurons incubated in these gels exhibited enhanced neurite outgrowth and development compared to those incubated in collagen gel (dECM 0 mg/mL). We evaluated the surface morphology and mechanical properties of the hydrogel with and without the brain dECM and found that their encapsulated neurons showed similar levels of cell viability. We then used a mechanical process to align the composite dECM hydrogel, conferring the desired structural properties to our system. Together, our results suggest that our newly developed brain dECM-based 3D culture platform could potentially be further developed for use in drug screening.
URI
http://pubs.kist.re.kr/handle/201004/72434
ISSN
2373-9878
Appears in Collections:
KIST Publication > Article
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