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CHARACTERIZATION AND ISOLATION OF VERY SMALL EMBRYONIC-LIKE (VSEL) STEM CELLS OBTAINED FROM HUMAN PERIPHERAL BLOOD  
Yazarlar
Serap Erdem Kuruca
İstanbul Tıp Fakültesi, Turkey
Dolay Damla Çelik
İstanbul Tıp Fakültesi, Turkey
Gülderen Demirel
Yeditepe University, Turkey
Dilşad Özerkan
Kastamonu University, Turkey
Özet
Objective: Stem cell transplantation is considered to be one of the available treatments for malign or hereditary blood diseases and bone marrow failure. Peripheral blood progenitor cells (PBPC) are widely used for this technique. Recently a new type of stem cell with a pluripotent potential has been identified. These cells, called very small embryonic-like (VSEL) stem cells, are thought to be found in peripheral blood (PB) in adult individuals. The aim of this study was to obtain and identify VSEL stem cells using a peripheral blood source. Material and Method: VSEL cells were isolated from mononuclear and erythrocyte layers obtained by using lysis and ficoll gradient methods from the materials taken from donors. The presence of NANOG, OCT4, SSEA-4 and CXCR-4 embryonal stem cell markers by flow cytometry and immunofluorescence staining was investigated. The presence of NANOG and OCT4 proteins was investigated using the Western blot method. Results: According to the flow cytometry results, the number of cells carrying the VSEL marker was higher in the debris layer than in the CD45-population. Western and immunofluorescence results showed high levels of OCT4 and NANOG expression. It was also determined that these proteins are present in both the cytoplasm and the nucleus. Conclusions: High expression of these proteins, known as pluripotent stem cell markers, in adult peripheral blood brings to mind the question of how they work in differentiated tissues. These findings strengthen the thesis of a new stem cell population that have pluripotent markers in peripheral blood and provide the basis for future clinical studies about this point.
Anahtar Kelimeler
Peripheral blood | Pluripotent stem cell markers | Very Small Embryonic-like (VSEL) stem cells
Makale Türü Özgün Makale
Makale Alt Türü SCOPUS dergilerinde yayımlanan tam makale
Dergi Adı Istanbul Tip Fakultesi Dergisi
Dergi ISSN 1305-6433
Makale Dili İngilizce
Basım Tarihi 01-2019
Cilt No 82
Sayı 2
Sayfalar 96 / 106
Doi Numarası 10.26650/IUITFD.2018.0001