Characterization of three washing/decellularization procedures for the production of bioactive human micronized neural tissue (hMINT).
Cell Tissue Bank
; 24(4): 693-703, 2023 Dec.
Article
in En
| MEDLINE
| ID: mdl-36854877
ABSTRACT
BACKGROUND:
We developed a novel, injectable and decellularized human peripheral nerve-based scaffold, named Micronized Human Neural Tissue (hMINT), designed to be used as a supportive matrix for stem cell transplantation in the context of spinal cord injury (SCI). MATERIALS ANDMETHODS:
Human donated sciatic nerves were micronized at liquid nitrogen temperature prior to decellularization using 3 different procedures of various harshness. hMINT were characterized in terms of particle size, DNA, sulfated glycosaminoglycans (sGAG) and growth factors content. To test the biocompatibility and bioactivity of the various preparations, we used a type of mesenchymal stromal cells (MSCs), termed MIAMI cells, which were placed in contact with hMINT to monitor cell attachment by confocal microscopy and gene expression by RT-qPCR in vitro.RESULTS:
The content of DNA, sGAG and growth factors left in the product after processing was highly dependent on the decellularization procedure used. We demonstrated that hMINT are biocompatible and promoted the attachment and long-term survival of MIAMI cells in vitro. Finally, combination with hMINT increased MIAMI cells mRNA expression of pro-survival and anti-inflammatory factors. Importantly, the strongest bioactivity on MIAMI cells was observed with the hMINT decellularized using the mildest decellularization procedure, therefore emphasizing the importance of achieving an adequate decellularization without losing the hMINT's bioactivity. PERSPECTIVES AND CLINICALSIGNIFICANCE:
The capacity of hMINT/stem cells to facilitate protection of injured neural tissue, promote axon re-growth and improve functional recovery will be tested in an animal model of SCI and other neurodegenerative disorders in the future.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tissue Scaffolds
/
Mesenchymal Stem Cells
Type of study:
Prognostic_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
Cell Tissue Bank
Journal subject:
HISTOLOGIA
/
TRANSPLANTE
Year:
2023
Document type:
Article
Affiliation country:
United States
Country of publication:
HOLANDA
/
HOLLAND
/
NETHERLANDS
/
NL
/
PAISES BAJOS
/
THE NETHERLANDS