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Membrane proteomic signatures of karyotypically normal and abnormal human embryonic stem cell lines and derivatives
Author(s) -
Gerwe Brian A.,
Angel Peggi M.,
West Franklin D.,
Hasneen Kowser,
Young Amber,
Orlando Ron,
Stice Steven L.
Publication year - 2011
Publication title -
proteomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.26
H-Index - 167
eISSN - 1615-9861
pISSN - 1615-9853
DOI - 10.1002/pmic.201000032
Subject(s) - biology , embryonic stem cell , microbiology and biotechnology , proteomics , population , membrane protein , mesenchymal stem cell , progenitor cell , stem cell , biochemistry , membrane , demography , sociology , gene
Cultured human embryonic stem cells (hESCs) and derived derivatives contain heterogeneous cell populations with varying degrees of differentiation and karyotypic stability. The inability to isolate homogenous population presents a challenge toward cell‐based applications and therapies. A proteomics approach was utilized to discover novel membrane proteins able to distinguish between the hESC lines BG01, WA09, and abBG02 (trisomy 12, 14, 17 and an extra copy of the X chromosome), along with WA09‐derived human neural progenitor (hNP) cells. Membrane protein signatures were developed using sucrose‐gradient isolation, 1‐D gel electrophoresis followed by in‐gel digestion and analysis by reverse phase chromatography coupled to ion trap‐FT‐ICR. At a ≤1.0% false discovery rate, 1918 proteins were identified; 775 were annotated as membrane proteins and 720 predicted to contain transmembrane spanning regions. Flow cytometry was used to validate cell surface expression of selected proteins. Junctional adhesion molecule 1 expression was shared by BG01, BG02 and abBG02 hESC lines. Dysferlin expression was specific to the WA09 hESC line and not the derived neural or mesenchymal progenitors. Ciliary neurotrophic factor receptor distinguished WA09‐derived human neural progenitor cells from the parent hESC population, and WA09‐derived mesenchymal progenitor cells. This study expands the current membrane protein data set for hESCs.