title: Cellular Response of Limbal Stem Cells on Polycaprolactone Nanofibrous Scaffolds for Ocular Epithelial Regeneration.
abstract: OBJECTIVE
  The aim of this study was to develop nanofibrous polycaprolactone (PCL) substrate for limbal stem cell (LSC) expansion that can serve as a potential alternative substrate to replace human amniotic membrane (AM).
  
  
  METHODS
  The human limbus stem cell was used to evaluate the biocompatibility of substrates (nanofibrous scaffold and, human AM) based on their phenotypic profile, viability, proliferation and attachment ability.
  
  
  RESULTS
  Biocompatibility results indicated that the all substrates were highly biocompatible, as LSCs could favorably attach and proliferate on the nanofibrous surface. Microscopic figures showed that the human LSCs were firmly anchored to the substrates and were able to retain a normal corneal stem cell phenotype. Microscopic analyses illustrated that cells infiltrated the nanofibers and successfully formed a three-dimensional corneal epithelium, which was viable for two weeks. Immunocytochemistry (ICC) and real time-PCR results revealed no change in the expression profile of LECs grown on nanofibrous substrate when compared to those grown on human AM.
  
  
  CONCLUSIONS
  In addition, electrospun nanofibrous PCL substrate provides not only a milieu supporting LSCs expansion, but also serve as a useful alternative carrier for ocular surface tissue engineering and could be used as an alternative substrate to AM.
authors.affiliation: a Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences , Tehran , Iran .
authors.forename: Alireza
authors.initials: A
authors.lastname: Baradaran-Rafii
authors.affiliation: b Department of Biomaterials Engineering , Islamic Azad University , Tonekabon Branch , Iran , and.
authors.forename: Esmaeil
authors.initials: E
authors.lastname: Biazar
authors.affiliation: c Proteomics Research Center, Shahid Beheshti University of Medical Sciences , Tehran , Iran.
authors.forename: Saeed
authors.initials: S
authors.lastname: Heidari-keshel
mesh_terms: D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2 / Q000235:genetics / Q000378:metabolism; D001672:Biocompatible Materials; D015415:Biomarkers / Q000378:metabolism; D002448:Cell Adhesion / Q000502:physiology; D049109:Cell Proliferation / Q000502:physiology; D002470:Cell Survival / Q000502:physiology; D019573:Epithelium, Corneal / Q000502:physiology*; D005434:Flow Cytometry; D015870:Gene Expression; D006801:Humans; D053551:Keratin-12 / Q000235:genetics / Q000378:metabolism; D053558:Keratin-3 / Q000235:genetics / Q000378:metabolism; D016850:Limbus Corneae / Q000166:cytology* / Q000378:metabolism; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers; D009363:Neoplasm Proteins / Q000235:genetics / Q000378:metabolism; D011091:Polyesters; D060888:Real-Time Polymerase Chain Reaction; D012038:Regeneration / Q000502:physiology*; D013234:Stem Cells / Q000166:cytology* / Q000378:metabolism; D054457:Tissue Scaffolds; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism; D025521:Tumor Suppressor Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: C116614:ABCG2 protein, human; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D001672:Biocompatible Materials; D015415:Biomarkers; C507494:KRT12 protein, human; C479360:KRT3 protein, human; D053551:Keratin-12; D053558:Keratin-3; D009363:Neoplasm Proteins; D011091:Polyesters; C115051:TP63 protein, human; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins; C016240:polycaprolactone
keywords: Cellular analyses; cornea regeneration; limbal stem cells; nanofibrous scaffold; polycaprolactone