New insights into mechanisms regulating gene expression in embryonic stem cells

May 31, 2017

Researchers from Turku, Finland, have discovered new information about the mechanisms which maintain gene activity in human embryonic stem cells. The observed mechanism is essential for the self-renewal of stem cells. The two research groups who made the discovery, led by Senior Researcher, Docent Riikka Lund and Academy Professor Riitta Lahesmaa, work at the Turku Centre for Biotechnology. The study was conducted in co-operation with researchers from Aalto University, the University of Tampere and Karolinska Institutet.

Embryonic stem cells have a unique ability to form all the cell and tissue types of an adult human body. The mechanisms that control this ability have been the target of active research, as stem cells are expected to be an important tool in future medicine.

The research results of the research groups of Lund and Lahesmaa have been reported in the Stem Cell Reports journal.

- Our results provide new insights into the mechanisms of how POLR3G gene regulates stem cell state, which in turn sheds light on the complex mechanisms with which human embryonic stem cells both self-renew and maintain the ability to differentiate. The results point to indirect genomic regulatory mechanisms which are important for embryonic stem cells and maintain gene expression, say Riikka Lund and Riitta Lahesmaa.

Stem cell research is one of the central research areas of modern medicine. The current and most important applications of stem cell research are related to disease diagnostics and treatment. For example, one of the goals of stem cell research is to develop methods for the replacement of damaged tissues in the future.

Understanding the mechanisms that regulate the self-renewal and differentiation of stem cells is important, in order that stem cells can be effectively and safely utilised in medical applications in the future.
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The research article is available online at http://www.cell.com/stem-cell-reports/fulltext/S2213-6711(17)30170-4

University of Turku

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