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