PMID- 25809662 OWN - NLM STAT- MEDLINE DCOM- 20160525 LR - 20181202 IS - 1552-4965 (Electronic) IS - 1549-3296 (Print) IS - 1549-3296 (Linking) VI - 103 IP - 10 DP - 2015 Oct TI - Coculture of dorsal root ganglion neurons and differentiated human corneal stromal stem cells on silk-based scaffolds. PG - 3339-48 LID - 10.1002/jbm.a.35465 [doi] AB - Corneal tissue displays the highest peripheral nerve density in the human body. Engineering of biomaterials to promote interactions between neurons and corneal tissue could provide tissue models for nerve/cornea development, platforms for drug screening, as well as innovative opportunities to regenerate cornea tissue. The focus of this study was to develop a coculture system for differentiated human corneal stromal stem cells (dhCSSCs) and dorsal root ganglion neurons (DRG) to mimic the human cornea tissue interactions. Axon extension, connectivity, and neuron cell viability were studied. DRG neurons developed longer axons when cocultured with dhCSSCs in comparison to neuron cultures alone. To assess the mechanism involved in the coculture response, nerve growth factors (NGF) secreted by dhCSSCs including NGF, brain-derived neurotrophic factor (BDNF), glial cell-derived neurotrophic factor (GDNF), and neurotrophin-3 were characterized with greater focus on BDNF secretion. DhCSSCs also secreted collagen type I, an extracellular matrix molecule favorable for neuronal outgrowth. This coculture system provides a slowly degrading silk matrix to study neuronal responses in concert with hCSSCs related to innervation of corneal tissue with utility toward human corneal nerve regeneration and associated diseases. CI - (c) 2015 Wiley Periodicals, Inc. FAU - Wang, Siran AU - Wang S AD - Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, Massachusetts, 02155. FAU - Ghezzi, Chiara E AU - Ghezzi CE AD - Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, Massachusetts, 02155. FAU - White, James D AU - White JD AD - Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, Massachusetts, 02155. FAU - Kaplan, David L AU - Kaplan DL AD - Department of Biomedical Engineering, Tufts University, 4 Colby St., Medford, Massachusetts, 02155. LA - eng GR - R01 EY016415/EY/NEI NIH HHS/United States GR - R01 EY020856/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150525 PL - United States TA - J Biomed Mater Res A JT - Journal of biomedical materials research. Part A JID - 101234237 RN - 0 (Silk) SB - IM MH - Animals MH - *Cell Differentiation MH - Chick Embryo MH - Coculture Techniques MH - Ganglia, Spinal/cytology/*metabolism MH - Humans MH - Mesenchymal Stem Cells/cytology/*metabolism MH - Neurons/cytology/*metabolism MH - Silk/*chemistry MH - Tissue Scaffolds/*chemistry PMC - PMC4552610 MID - NIHMS678400 OTO - NOTNLM OT - coculture OT - collagen OT - cornea OT - neurons OT - silk EDAT- 2015/03/27 06:00 MHDA- 2016/05/26 06:00 PMCR- 2016/10/01 CRDT- 2015/03/27 06:00 PHST- 2014/12/21 00:00 [received] PHST- 2015/03/13 00:00 [revised] PHST- 2015/03/23 00:00 [accepted] PHST- 2015/03/27 06:00 [entrez] PHST- 2015/03/27 06:00 [pubmed] PHST- 2016/05/26 06:00 [medline] PHST- 2016/10/01 00:00 [pmc-release] AID - 10.1002/jbm.a.35465 [doi] PST - ppublish SO - J Biomed Mater Res A. 2015 Oct;103(10):3339-48. doi: 10.1002/jbm.a.35465. Epub 2015 May 25.