ArticlePLoS biology2022
Phosphoinositide species and filamentous actin formation mediate engulfment by senescent tumor cells.
Article in PLoS biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- The states of senescent cells.Biochemical Society transactions · 2025Review
- The three barriers senescent tumor cells must overcome to relapse.Cancer heterogeneity and plasticity · 2025Article
- LYVE-1-expressing Macrophages Modulate the Hyaluronan-containing Extracellular Matrix in the Mammary Stroma and Contribute to Mammary Tumor Growth.Cancer research communications · 2024Article
- Adaptations of membrane trafficking in cancer and tumorigenesis.Journal of cell science · 2024Review
- RNA-binding motif protein 10 inactivates c-Myc by partnering with ribosomal proteins uL18 and uL5.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Could senescence phenotypes strike the balance to promote tumor dormancy?Cancer metastasis reviews · 2023Review
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Authors and funding
7 authors.
Funding
Abstract
Cancer cells survive chemotherapy and cause lethal relapse by entering a senescent state that facilitates expression of many phagocytosis/macrophage-related genes that engender a novel cannibalism phenotype. We used biosensors and live-cell imaging to reveal the basic steps and mechanisms of engulfment by senescent human and mouse tumor cells. We show filamentous actin in predator cells was localized to the prey cell throughout the process of engulfment. Biosensors to various phosphoinositide (PI) species revealed increased concentration and distinct localization of predator PI(4) P and PI(4,5)P2 at the prey cell during early stages of engulfment, followed by a transient burst of PI(3) P before and following internalization. PIK3C2B, the kinase responsible for generating PI(3)P, was required for complete engulfment. Inhibition or knockdown of Clathrin, known to associate with PIK3C2B and PI(4,5)P2, severely impaired engulfment. In sum, our data reveal the most fundamental cellular processes of senescent cell engulfment, including the precise localizations and dynamics of actin and PI species throughout the entire process.
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Registered trials
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