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We are analyzing https://link.springer.com/article/10.1186/s13287-021-02256-2.

Title:
EIF5A2 enhances stemness of epithelial ovarian cancer cells via a E2F1/KLF4 axis | Stem Cell Research & Therapy
Description:
Background Ovarian cancer stem cells (OCSC), endowed with tumor-initiating and self-renewal capacity, would account not only for the tumor growth, the peritoneal metastasis, and the relapse, but also for the acquisition of chemotherapy resistance. Nevertheless, figuring out their phenotypical and functional traits has proven quite challenging, mainly because of the heterogeneity of ovarian cancer. A deeper understanding of OCSC mechanisms will shed light on the development of the disease. Therefore, we aim to explore it for the design of innovative treatment regimens which aim at the eradication of ovarian cancer through the elimination of the CSC component. Methods In this study, immunohistochemistry assay and western blot assay were used to detect protein expression in the primary tumor and peritoneal multi-cellular aggregates/spheroids (MCAs/MCSs). OCSCs induced from cell line SKOV3 and HO-8910 were enriched in a serum-free medium (SFM). The effect of EIF5A2 on CSC-like properties was detected by sphere-forming assays, re-differentiation assays, quantitative real-time polymerase chain reaction, western blotting, flow cytometry, cell viability assays, immunofluorescence staining, and in vivo xenograft experiments. RNA-sequencing (RNA-seq) was used to reveal the mechanism by which EIF5A2 positively modulates the stem-like properties of ovarian cancer cells. Results Expression of EIF5A2 was significantly higher in peritoneal MCAs/MCSs compared to matched primary tumors, and EIF5A2 was also unregulated in ovarian cancer cell line-derived spheroids. Knockdown of EIF5A2 reduced the expression of the stem-related markers (ALDH1A1 and OCT-4), inhibited self-renewal ability, improved the sensitivity to chemotherapeutic drugs, and inhibited tumorigenesis in vivo. Mechanistic studies revealed that EIF5A2 knockdown reduced the expression of KLF4, which could partially rescue stem-like properties abolished by EIF5A2 knockdown or strengthened by EIF5A2 overexpression, through the transcription factor E2F1, which directly bind to KLF4 promoter. Conclusion Our results imply that EIF5A2 positively regulates stemness in ovarian cancer cells via E2F1/KLF4 pathway and may serve as a potential target in CSCs-targeted therapy for ovarian cancer.
Website Age:
28 years and 1 months (reg. 1997-05-29).

Matching Content Categories {📚}

  • Science
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Custom-built

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🌠 Phenomenal Traffic: 5M - 10M visitors per month


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Keywords {🔍}

eifa, cells, cancer, expression, cell, klf, ovarian, eoc, skov, fig, article, stem, overexpression, google, scholar, analysis, data, spheroids, cas, knockdown, figure, tumor, patients, spheroid, stemness, protein, mcas, medium, showed, properties, detected, aldhcd, study, results, csc, qrtpcr, assay, western, staining, oct, analyzed, mrna, wang, treatment, aldha, factor, role, days, chemoresistance, ascites,

Topics {✒️}

pdk4-mediated stat3/akt/nf-κb/il-8 signaling ras/raf/mek/erk signaling oncogenic mir-20b-5p contributes c-myc/mir-29b axis c-myc/microrna-29b axis mir-185-3p/e2f1/nanog axis semi-solid serum-free medium peritoneal multi-cellular aggregates/spheroids stem cell biology eif5a2/e2f1/klf4 axis combined anti-cd44-apc/pe eif5a2/prb/e2f1/klf4 axis serum-free dmem/f12 article download pdf ovarian cancer statistics stem-related markers detection previous neo-adjuvant chemotherapy tris-buffered saline supplemented single-agent melphalan chemotherapy 2 × 150 bp paired-end sequencing enhancing anchorage-independent growth csc subpopulation-induced tumorigenicity serum-free culture condition matched peritoneal mcas/mcss research ethics committee aldh+cd44+ subpopulation cells aldh-cd44- subpopulation cells cells exhibiting aldh+/cd44+ e2f1-mediated pro-tumorigenic aldh−cd44− subpopulaiton cells cell stem cell cancer stem cell eif5a2/e2f1/klf4 axis peritoneal mcas/mcss compared kaplan-meier survival analysis western-blot assay bands cancer stem cells stem cell fate pluripotent stem cells csc-related molecules involved cell cycle arrest privacy choices/manage cookies related stem genes eif5a2 enhances stemness full access eif5a2-kd skov3 cells stem-related markers cdks/prb pathway plays epithelial ovarian cancer csc-targeted therapy

Questions {❓}

  • An alternative way for epithelial-to-mesenchymal transition in colorectal cancer via EIF5A2?
  • Cancer and stem cell biology: how tightly intertwined?
  • Prediction of therapy response in ovarian cancer: where are we now?

Schema {🗺️}

WebPage:
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         headline:EIF5A2 enhances stemness of epithelial ovarian cancer cells via a E2F1/KLF4 axis
         description:Ovarian cancer stem cells (OCSC), endowed with tumor-initiating and self-renewal capacity, would account not only for the tumor growth, the peritoneal metastasis, and the relapse, but also for the acquisition of chemotherapy resistance. Nevertheless, figuring out their phenotypical and functional traits has proven quite challenging, mainly because of the heterogeneity of ovarian cancer. A deeper understanding of OCSC mechanisms will shed light on the development of the disease. Therefore, we aim to explore it for the design of innovative treatment regimens which aim at the eradication of ovarian cancer through the elimination of the CSC component. In this study, immunohistochemistry assay and western blot assay were used to detect protein expression in the primary tumor and peritoneal multi-cellular aggregates/spheroids (MCAs/MCSs). OCSCs induced from cell line SKOV3 and HO-8910 were enriched in a serum-free medium (SFM). The effect of EIF5A2 on CSC-like properties was detected by sphere-forming assays, re-differentiation assays, quantitative real-time polymerase chain reaction, western blotting, flow cytometry, cell viability assays, immunofluorescence staining, and in vivo xenograft experiments. RNA-sequencing (RNA-seq) was used to reveal the mechanism by which EIF5A2 positively modulates the stem-like properties of ovarian cancer cells. Expression of EIF5A2 was significantly higher in peritoneal MCAs/MCSs compared to matched primary tumors, and EIF5A2 was also unregulated in ovarian cancer cell line-derived spheroids. Knockdown of EIF5A2 reduced the expression of the stem-related markers (ALDH1A1 and OCT-4), inhibited self-renewal ability, improved the sensitivity to chemotherapeutic drugs, and inhibited tumorigenesis in vivo. Mechanistic studies revealed that EIF5A2 knockdown reduced the expression of KLF4, which could partially rescue stem-like properties abolished by EIF5A2 knockdown or strengthened by EIF5A2 overexpression, through the transcription factor E2F1, which directly bind to KLF4 promoter. Our results imply that EIF5A2 positively regulates stemness in ovarian cancer cells via E2F1/KLF4 pathway and may serve as a potential target in CSCs-targeted therapy for ovarian cancer.
         datePublished:2021-03-16T00:00:00Z
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            Cancer stem cells
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      headline:EIF5A2 enhances stemness of epithelial ovarian cancer cells via a E2F1/KLF4 axis
      description:Ovarian cancer stem cells (OCSC), endowed with tumor-initiating and self-renewal capacity, would account not only for the tumor growth, the peritoneal metastasis, and the relapse, but also for the acquisition of chemotherapy resistance. Nevertheless, figuring out their phenotypical and functional traits has proven quite challenging, mainly because of the heterogeneity of ovarian cancer. A deeper understanding of OCSC mechanisms will shed light on the development of the disease. Therefore, we aim to explore it for the design of innovative treatment regimens which aim at the eradication of ovarian cancer through the elimination of the CSC component. In this study, immunohistochemistry assay and western blot assay were used to detect protein expression in the primary tumor and peritoneal multi-cellular aggregates/spheroids (MCAs/MCSs). OCSCs induced from cell line SKOV3 and HO-8910 were enriched in a serum-free medium (SFM). The effect of EIF5A2 on CSC-like properties was detected by sphere-forming assays, re-differentiation assays, quantitative real-time polymerase chain reaction, western blotting, flow cytometry, cell viability assays, immunofluorescence staining, and in vivo xenograft experiments. RNA-sequencing (RNA-seq) was used to reveal the mechanism by which EIF5A2 positively modulates the stem-like properties of ovarian cancer cells. Expression of EIF5A2 was significantly higher in peritoneal MCAs/MCSs compared to matched primary tumors, and EIF5A2 was also unregulated in ovarian cancer cell line-derived spheroids. Knockdown of EIF5A2 reduced the expression of the stem-related markers (ALDH1A1 and OCT-4), inhibited self-renewal ability, improved the sensitivity to chemotherapeutic drugs, and inhibited tumorigenesis in vivo. Mechanistic studies revealed that EIF5A2 knockdown reduced the expression of KLF4, which could partially rescue stem-like properties abolished by EIF5A2 knockdown or strengthened by EIF5A2 overexpression, through the transcription factor E2F1, which directly bind to KLF4 promoter. Our results imply that EIF5A2 positively regulates stemness in ovarian cancer cells via E2F1/KLF4 pathway and may serve as a potential target in CSCs-targeted therapy for ovarian cancer.
      datePublished:2021-03-16T00:00:00Z
      dateModified:2021-03-16T00:00:00Z
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         Ovarian cancer
         Cancer stem cells
         Chemoresistance
         EIF5A2
         E2F1
         KLF4
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         Cell Biology
         Regenerative Medicine/Tissue Engineering
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               type:PostalAddress
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      name:Tianli Zhang
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            name:Qilu Hospital of Shandong University
            address:
               name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
               type:PostalAddress
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      name:Xingsheng Yang
      url:http://orcid.org/0000-0002-4946-2033
      affiliation:
            name:Qilu Hospital of Shandong University
            address:
               name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
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      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
      name:Affiliated Reproductive Hospital of Shandong University, Jinan, People’s Republic of China
      name:West China School of Medicine, Sichuan University, Sichuan, People’s Republic of China
      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
      name:Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China

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