Intact Cell Mass Spectrometry as a Quality Control Tool for Revealing Minute Phenotypic Changes of Cultured Human Embryonic Stem Cells

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VAŇHARA Petr KUČERA Lukáš PROKEŠ Lubomír JUREČKOVÁ Lucie PENA-MÉNDEZ Eladia María HAVEL Josef HAMPL Aleš

Druh Článek v odborném periodiku
Časopis / Zdroj Stem Cells Translational Medicine
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
www http://onlinelibrary.wiley.com/doi/10.1002/sctm.17-0107/abstract
Doi http://dx.doi.org/10.1002/sctm.17-0107
Klíčová slova cell culture; differentiation; embryonic stem cells; technology; tissue engineering
Popis The stability of in vitro cell cultures is an important issue for any clinical, bio-industrial, or pharmacological use. Embryonic stem cells are pluripotent; consequently, they possess the ability to differentiate into all three germ layers and are inherently prone to respond to differentiation stimuli. However, long-term culture inevitably yields clones that are best adapted to the culture conditions, passaging regimes, or differentiation sensitivity. This cellular plasticity is a major obstacle in the development of bio-industrial or clinical-grade cultures. At present, the quality control of cell cultures is limited by the lack of reliable (epi)genetic or molecular markers or by the focus on a particular type of instability such as karyotype abnormalities or adverse phenotypic traits. Therefore, there is an ongoing need for robust, feasible, and sensitive methods of determining or confirming cell status and for revealing potential divergences from the optimal state. We modeled both intrinsic and extrinsic changes in human embryonic stem cell (hESC) states using different experimental strategies and addressed the changes in cell status by intact cell mass spectrometry fingerprinting. The analysis of spectral fingerprints by methods routinely used in analytical chemistry clearly distinguished the morphologically and biochemically similar populations of hESCs and provided a biomarker-independent tool for the quality control of cell culture
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