Preoperative preparation of limbal cell transplants for the treatment of optic neuropathy (experimental study)
Purpose. To study experimentally in vitro secretion of the nerve growth factor (NGF) and the brain-derived neurotrophic factor (BDNF) using intact and induced multi-potent mesenchymal limbal stem cells (MSCs) in three-dimensional culture (3D).Material and methods. MSCs were obtained by culturing of...
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| Published in: | Oftalʼmokhirurgii͡a︡ = Ophthalmosurgery no. 2; pp. 28 - 36 |
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| Main Authors: | , , , , , , , , , |
| Format: | Journal Article |
| Language: | English Russian |
| Published: |
Publishing house "Ophthalmology"
01-09-2017
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Purpose. To study experimentally in vitro secretion of the nerve growth factor (NGF) and the brain-derived neurotrophic factor (BDNF) using intact and induced multi-potent mesenchymal limbal stem cells (MSCs) in three-dimensional culture (3D).Material and methods. MSCs were obtained by culturing of limbal fragments, isolated from the cadaveric human donor eyes, according to the medical technology of the S. Fyodorov Eye Microsurgery Federal State Institution. The phenotype of obtained cell culture was studied by the flow cytometry method.Stimulation of secretion of neurotrophic factors was performed via a two-step technique using non-specific activation factors: EGF, hbFGF, N2 additive, dibutyryl cAMP, NRG1-beta 1, PDGF, 3-isobutyl-1- methylxanthine. The 3D-cell spheroids were generated using agarose plates (3D Petri dishes, Microtissue, USA) for three comparative groups where: Group I – control, Group II – with the induction of spheroids at 1 day of cultivation; Group III – with induction of spheroids at 7 days of cultivation. The concentration of NGF and BDNF in the culture medium was studied using the enzyme linked immunosorbent assay (ELISA).Results. The induction of the 3D spheroids of limbal MSCs, that carried out on the 1st and 7th days of incubation, contributes to a significant increase in the production of NGF and BDNF, but subsequently a pronounced reduction in the secretion of these factors is observed. The conducting of an induction leads to a change in the morphology of spheroids: loss of compactness, the emergence of «fringed» (debris). Such changes indicate a non-viability of the obtained 3D-cell spheroids.Conclusion. The cellular spheroids, created from 2D-culture of intact limbal MSCs by the three-dimensional culture method, are capable in sufficient therapeutic concentrations spontaneously to synthesize NGF and BDNF, have the most optimal design for transplantation in extrabulbar and intraocular tissue niches of the eyeball, are a potential source of prolonged secretion of neural basis function in cell treatment of optic neuropathy. |
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| ISSN: | 0235-4160 2312-4970 |
| DOI: | 10.25276/0235-4160-2017-2-28-36 |