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Gene expression profile of podocalyxin-like protein 1(PODXL) overexpressing and GFP overexpressing control embryonic stem cells

ABSTRACT: Gene expression profile of podocalyxin-like protein 1(PODXL) overexpressing and GFP overexpressing control embryonic stem cells

PROVIDER: PRJNA524354 | ENA |

REPOSITORIES: ENA

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Gene expression profile of podocalyxin-like protein 1(PODXL) overexpressing and GFP overexpressing control embryonic stem cells

Project description:The transmembrane signals maintain the pluripotency of human pluripotent stem cells (hPSCs) are rarely investigated. A transmembrane glycoprotein, podocalyxin-like protein 1 (PODXL, also called podocalyxin like protein-1, PCLP1, Gp200/GCTM-2, MEP21, and Thrombomucin), aside from its well-known role in tumor malignancy, very little is known about its functions in hPSCs. In order to map the early signals triggered by PODXL, after 3 days of PODXL overexpression, a comprehensive gene expression profile changes were analyzed by cDNA microarray.

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Podocalyxin-Like Protein 1 Regulates Pluripotency through the Cholesterol Biosynthesis Pathway

Project description:Deciphering signaling mechanisms critical for the extended pluripotent stem cell (EPSC) state and primed pluripotency is necessary for understanding embryonic development. Here, we identify a membrane protein, Podocalyxin-like protein 1 (PODXL) as being essential for extended and primed pluripotency. Alteration of PODXL expression levels affects self-renewal, protein expression of c-MYC and telomerase, and induced pluripotent stems cell (iPSC) and EPSC colony formation. PODXL is the first membrane protein reported to regulate de novo cholesterol biosynthesis, and human pluripotent stem cells (hPSCs) are more sensitive to cholesterol depletion than fibroblasts. The addition of exogenous cholesterol fully restores PODXL knockdown-mediated loss of pluripotency. PODXL affects lipid raft dynamics via the regulation of cholesterol. PODXL recruits the RAC1/CDC42/actin network to regulate SREBP1 and SREBP2 maturation and lipid raft dynamics. Single-cell RNA sequencing reveals PODXL overexpression enhanced chimerism between human cells in mouse host embryos (hEPSCs 57%). Interestingly, in the human-mouse chimeras, laminin and collagen signaling-related pathways are dominant in PODXL overexpressing cells. We conclude that cholesterol regulation via PODXL signaling is critical for ESC/EPSC.

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Podocalyxin governs the barrier function of human endometrial epithelium and critically regulates receptivity for embryo implantation

Project description:Embryo implantation is a key step in establishing pregnancy and a major limiting factor in IVF. Implantation requires the endometrium, the inner lining of the uterus, to transform from a non-receptive to a receptive state, to allow embryos to attach to the surface and enter into the tissue. However, the fundamental mechanisms governing receptivity are not well understood. Here we show that transmembrane protein podocalyxin is a major and clinically significant factor regulating human endometrial receptivity. Podocalyxin is expressed in all endometrial epithelial cells in the non-receptive state but is selectively down-regulated in the luminal epithelium at receptivity. We present evidence that podocalyxin critically governs the barrier function of the endometrial epithelium, likely as an intrinsic protective mechanism, rendering it non-receptive to an embryo. In addition, podocalyxin suppresses genes promoting receptivity (eg LIF, CSF1) but stimulates those inhibiting implantation (eg WNT7A, LEFTY2). Down-regulation of podocalyxin in the luminal epithelium, likely mediated by progesterone, selectively converts the endometrial surface to a more adhesive state that facilitates embryo attachment and penetration. Furthermore, inadequate down-regulation of podocalyxin in the endometrial luminal epithelium is associated with poorer implantation rates in IVF. We thus propose that podocalyxin promotes the barrier function of human endometrial epithelial cells and critically regulates receptivity for embryo implantation.

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Project description:HES2 ESC were infected with a lentivirus construct containing either CD30 (TNFRSF8) extracellular deficient variant or GFP, using the ViraPower™ Promoterless Lentiviral Gateway® Kits (Invitrogen). HES2 cells were recovered and grown for 19 passages. HES2 were commonly grown on Mouse Embryonic Feeder cells in the presence of KSOR media. Before collection of RNA, ES cells were FACs sorted with antibodies to GCMT-2 and CD9 to separate ES cells from differentiated cells and mouse feeders. The experiment was repeated in triplicate. The final aim was to deduce the effect of overexpressing the variant form of CD30 on gene expression in HES2 cells.

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Project description:Ten-day old seedlings of Arabidopsis wildtype Col-0, and SsE1-overexpressing lines SsE1-GFP-5 and SsE1-GFP-8 were collected for total RNA extraction. Three biological replicates were prepared for each genotype.

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Direct comparison of HES2 ESC overexpressing CD30 variant with HES2 overexpressing GFP

Project description:HES2 ESC were infected with a lentivirus construct containing either CD30 (TNFRSF8) extracellular deficient variant or GFP, using the ViraPowerâ?¢ Promoterless Lentiviral GatewayÂ® Kits (Invitrogen). HES2 cells were recovered and grown for 19 passages. HES2 were commonly grown on Mouse Embryonic Feeder cells in the presence of KSOR media. Before collection of RNA, ES cells were FACs sorted with antibodies to GCMT-2 and CD9 to separate ES cells from differentiated cells and mouse feeders. The experiment was repeated in triplicate. The final aim was to deduce the effect of overexpressing the variant form of CD30 on gene expression in HES2 cells. Three consecutive passages of HES2 cells over-expressing either CD30V or GFP were grown and subject to FACs sorting, collection and microarray. A total of 6 samples, (3 replicates of these 2 populations) were used in the experiment.

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