MicroRNA profiling reveals two distinct p53-related human pluripotent stem cell states.
Reprogramming methodologies have provided multiple routes for achieving pluripotency. However, pluripotency is generally considered to be an almost singular state, with subtle differences described between induced pluripotent stem cells (iPSCs) and embryonic stem cells (ESCs). We profiled miRNA expression levels across 49 human cell lines, including ESCs, iPSCs, differentiated cells, and cancer cell lines. We found that the resulting miRNA profiles divided the iPSCs and hESCs examined into two distinct categories irrespective of the cell line origin. The miRNAs that defined these two pluripotency categories also distinguished cancer cells from differentiated cells. Transcriptome analysis suggested that several gene sets related to p53 distinguished these categories, and overexpression of the p53-targeting miRNAs miR-92 and miR-141 in iPSCs was sufficient to change their classification status. Thus, our results suggest a subdivision of pluripotent stem cell states that is independent of their origin but related to p53 network status.
Neuroscience Research Institute, University of California at Santa Barbara, 93106, USA.
Pierre
P
Neveu
Min Jeong
MJ
Kye
Shuping
S
Qi
David E
DE
Buchholz
Dennis O
DO
Clegg
Mustafa
M
Sahin
In-Hyun
IH
Park
Kwang-Soo
KS
Kim
George Q
GQ
Daley
Harley I
HI
Kornblum
Boris I
BI
Shraiman
Kenneth S
KS
Kosik
D002454:Cell Differentiation; D002460:Cell Line; D053595:Embryonic Stem Cells / Q000166:cytology / Q000378:metabolism; D020869:Gene Expression Profiling; D006801:Humans; D057026:Induced Pluripotent Stem Cells / Q000166:cytology / Q000378:metabolism*; D035683:MicroRNAs / Q000145:classification / Q000378:metabolism*; D020411:Oligonucleotide Array Sequence Analysis; D039904:Pluripotent Stem Cells / Q000145:classification* / Q000166:cytology / Q000378:metabolism*; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism*
D035683:MicroRNAs; D016159:Tumor Suppressor Protein p53