The Race Is On: Human Embryonic Stem Cell Research Goes Global

DeRouen, Mindy; McCormick, Jennifer; Owen-Smith, Jason; Scott, Christopher
December 2012
Stem Cell Reviews & Reports;Dec2012, Vol. 8 Issue 4, p1043
Academic Journal
More nations are joining the human embryonic stem cell (hESC) 'race' by aggressively publishing in the peer-reviewed journals. Here we present data on the international use and distribution of hESC using a dataset taken from the primary research literature. We extracted these papers from a comprehensive dataset of articles using hESC and human induced pluripotent stem cells (hiPSC). We find that the rate of publication by US-based authors is slowing in comparison to international labs, and then declines over the final year of the period 2008-2010. Non-US authors published more frequently and at a significantly higher rate, significantly increasing the number of their papers. In addition, international labs use a more diverse set of hESC lines and Obama-era additions are used more in non-US locations. Even considering the flood of new lines in the US and abroad, we see that researchers continue to rely on a few lines derived before the turn of the century. These data suggest 'embargo' effects from restrictive policies on the US stem cell field. Over time, non-US labs have freely used lines on the US registries, while federally funded US scientists have been limited to using those lines approved by the NIH.


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