PMID- 28297580 OWN - NLM STAT- MEDLINE DCOM- 20190705 LR - 20190705 IS - 2157-6564 (Print) IS - 2157-6580 (Electronic) IS - 2157-6564 (Linking) VI - 6 IP - 3 DP - 2017 Mar TI - A Human Corneal Epithelial Cell Line Model for Limbal Stem Cell Biology and Limbal Immunobiology. PG - 761-766 LID - 10.5966/sctm.2016-0175 [doi] AB - Limbal stem cell (LSC) deficiency is a visually debilitating condition caused by abnormal maintenance of LSCs. It is treated by transplantation of donor-derived limbal epithelial cells (LECs), the success of which depends on the presence and quality of LSCs within the transplant. Understanding the immunobiological responses of these cells within the transplants could improve cell engraftment and survival. However, human corneal rings used as a source of LSCs are not always readily available for research purposes. As an alternative, we hypothesized that a human telomerase-immortalized corneal epithelial cell (HTCEC) line could be used as a model for studying LSC immunobiology. HTCEC constitutively expressed human leukocyte antigen (HLA) class I but not class II molecules. However, when stimulated by interferon-gamma, HTCECs then expressed HLA class II antigens. Some HTCECs were also migratory in response to CXCL12 and expressed stem cell markers, Nanog, Oct4, and Sox2. In addition because both HTCECs and LECs contain side population (SP) cells, which are an enriched LSC population, we used these SP cells to show that some HTCEC SP cells coexpressed ABCG2 and ABCB5. HTCEC SP and non-side population (NSP) cells also expressed CXCR4, but the SP cells expressed higher levels. Both were capable of colony formation, but the NSP colonies were smaller and contained fewer cells. In addition, HTCECs expressed DeltaNp63alpha. These results suggest the HTCEC line is a useful model for further understanding LSC biology by using an in vitro approach without reliance on a supply of human tissue. Stem Cells Translational Medicine 2017;6:761-766. CI - (c) 2016 The Authors Stem Cells Translational Medicine published by Wiley Periodicals, Inc. on behalf of AlphaMed Press. FAU - Shaharuddin, Bakiah AU - Shaharuddin B AD - Institute of Genetic Medicine, Newcastle University, Newcastle Upon-Tyne, United Kingdom. AD - Advanced Medical and Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia. FAU - Ahmad, Sajjad AU - Ahmad S AD - St. Paul's Eye Unit, Royal Liverpool University Hospital, Liverpool, United Kingdom. AD - Department of Eye and Vision Sciences, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom. FAU - Md Latar, Nani AU - Md Latar N AD - Institute of Genetic Medicine, Newcastle University, Newcastle Upon-Tyne, United Kingdom. AD - Department of Surgery, Faculty of Medicine, Universiti Kebangsaan, Malaysia Medical Centre, Kuala Lumpur, Malaysia. FAU - Ali, Simi AU - Ali S AD - Institute of Cellular Medicine, Newcastle University, Newcastle Upon-Tyne, United Kingdom. FAU - Meeson, Annette AU - Meeson A AD - Institute of Genetic Medicine, Newcastle University, Newcastle Upon-Tyne, United Kingdom. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161014 PL - England TA - Stem Cells Transl Med JT - Stem cells translational medicine JID - 101578022 RN - 0 (Biomarkers) RN - 0 (HLA Antigens) RN - 0 (Receptors, CXCR4) RN - EC 2.7.7.49 (Telomerase) SB - IM MH - 3T3 Cells MH - Animals MH - Biomarkers/metabolism MH - Cell Line MH - Cell Line, Transformed MH - Chemotaxis MH - Colony-Forming Units Assay MH - Epithelial Cells/cytology/metabolism MH - Epithelium, Corneal/*cytology MH - HLA Antigens/metabolism MH - Histocompatibility Testing MH - Humans MH - Limbus Corneae/*cytology/*immunology MH - Mice MH - *Models, Biological MH - Receptors, CXCR4/metabolism MH - Side-Population Cells/cytology MH - Stem Cells/*cytology/metabolism MH - Telomerase/metabolism PMC - PMC5442771 OTO - NOTNLM OT - ABCB5 OT - CXCR4 OT - Immunobiology OT - Limbal stem cell OT - Side population EDAT- 2017/03/16 06:00 MHDA- 2019/07/06 06:00 PMCR- 2017/03/01 CRDT- 2017/03/16 06:00 PHST- 2016/04/06 00:00 [received] PHST- 2016/09/01 00:00 [accepted] PHST- 2017/03/16 06:00 [entrez] PHST- 2017/03/16 06:00 [pubmed] PHST- 2019/07/06 06:00 [medline] PHST- 2017/03/01 00:00 [pmc-release] AID - SCT312114 [pii] AID - 10.5966/sctm.2016-0175 [doi] PST - ppublish SO - Stem Cells Transl Med. 2017 Mar;6(3):761-766. doi: 10.5966/sctm.2016-0175. Epub 2016 Oct 14.