Knockdown CD44 Promotes Amyloid-Beta Degradation in Ovarian Cancer Cells By Regulating CD36 Expression
Research Square (Research Square)(2021)
Abstract
Abstract Background: CD44 is highly expressed in many cancers, including ovarian cancer. Its interactions with ligands are involved in tumor progression, prognosis, and metastasis. However, the function of CD44 in the advancement of ovarian cancer remains unclear. Methods and Results: RNA sequencing was used to investigate the possible molecules and pathways regulated by CD44 in ovarian cancer to compare gene expression in CD44-knockdown SKOV3 cells and control cells. Identify the differentially expressed genes and then proceed to functional enrichment analysis. The results showed that genes differentially expressed were enriched in ECM-receptor interaction, Protein digestion and absorption, Focal adhesion, Notch signaling pathway, microRNA in cancer, and TGF-beta signaling pathway. Furthermore, the analysis of the proteins interaction network revealed the interaction between CD44 and CD36 in SKOV3 cells. Further analysis showed that CD36, a molecule that may be involved in ECM-receptor interaction, was low expressed in CD44-knockdown SKOV3 cells. And the results showed that knockdown CD44 induces amyloid-beta degradation in ovarian cancer cells by regulating CD36 expression. The analyses of the public database demonstrated that the CD36 expression was related to the clinical survival of ovarian cancer. Conclusions: Our study showed that CD44 might up-regulate the CD36 expression in ovarian cancer, thereby exerting a cancer-promoting effect.
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Key words
ovarian cancer cells,cancer cells,amyloid-beta
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