mESCs grown under 3% O2 have an impaired LIF signaling, express less ‘pluripotency-involved’ proteins but maintain pluripotency. Aya Abou Hammoud Nina Kirstein Virginie Mournetas Anais Darracq Sabine Broc Camille Blanchard Dana Zeineddine Mohamad Mortada Helene Boeuf 10.1371/journal.pone.0146281.g006 https://plos.figshare.com/articles/figure/_mESCs_grown_under_3_O2_have_an_impaired_LIF_signaling_express_less_8216_pluripotency_involved_8217_proteins_but_maintain_pluripotency_/1633236 <p>Cells were grown with (+LIF) or without LIF for 1 to 3 or 4 days under normoxia or hypoxia as indicated. (A) Protein cell lysates (60 μg) from cells grown under the indicated conditions were analyzed by Western blot. ERK2 was used as a loading control. A representative experiment is shown. Quantification of signals obtained with the different antibodies in the + LIF condition (n = 4) is provided in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0146281#pone.0146281.s003" target="_blank">S3 Fig</a> (B) Gene expression of the indicated genes was analyzed by RT-qPCR. Graphs represent the average level of expression and SEM as depicted in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0146281#pone.0146281.g002" target="_blank">Fig 2</a> (n = 4). Paired sample t-test was performed to evaluate the significance of the difference in the expression levels observed in normoxia versus hypoxia: *p-value<0.05; **p-value<0.01, ***p-value<0.001; if not stated: not significant. (C) early lineage markers, (D) specific lineage markers in mESCs induced for <i>in vitro</i> differentiation under normoxia (20% O2, N) or hypoxia (3% O2, H). Gene expression was analyzed by RT-qPCR in cells grown for two days under N or H conditions (+LIFd2), in EBs at day 8 of their formation (EBs d8) and seven days after EBs plating. Y axis is in log scale.</p> 2016-01-18 14:26:07 pluripotency Master gene expression 3k plasticity pi Metalloproteinase MMP 1 LIF withdrawal mesodermal marker Brachyury displays pleiotropic functions mesc IL 6 cytokine family member neuroectoderm lineage markers Murine Embryonic Stem Cell Plasticity MMP 1 metalloproteinase