AI Article Synopsis
- Cell extrusion is a process for removing unwanted cells from tissues, crucial for maintaining cell balance, but the exact mechanisms behind it are not well understood.
- This research reveals that during cell extrusion, extracellular vesicles (EVs) form in a way that helps execute the removal of apoptotic cells, involving the exposure of phosphatidylserine on the cell membrane.
- Additionally, the study demonstrates that the formation of EVs influences neighboring cells' behaviors and underscores the significance of membrane dynamics in cell removal and tissue stability.
Article Abstract
Cell extrusion is a universal mode of cell removal from tissues, and it plays an important role in regulating cell numbers and eliminating unwanted cells. However, the underlying mechanisms of cell delamination from the cell layer are unclear. Here, we report a conserved execution mechanism of apoptotic cell extrusion. We found extracellular vesicle (EV) formation in extruding mammalian and Drosophila cells at a site opposite to the extrusion direction. Lipid-scramblase-mediated local exposure of phosphatidylserine is responsible for EV formation and is crucial for executing cell extrusion. Inhibition of this process disrupts prompt cell delamination and tissue homeostasis. Although the EV has hallmarks of an apoptotic body, its formation is governed by the mechanism of microvesicle formation. Experimental and mathematical modeling analysis illustrated that EV formation promotes neighboring cells' invasion. This study showed that membrane dynamics play a crucial role in cell exit by connecting the actions of the extruding cell and neighboring cells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.devcel.2023.05.008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Formononetin promotes porcine oocytes maturation and improves embryonic development by reducing oxidative stress.
Front Cell Dev Biol
January 2025
Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, South China Institute of Large Animal Models for Biomedicine, School of Pharmacy and Food Engineering, Wuyi University, Jiangmen, China.
Increasing evidence has demonstrated that oxidative stress impairs oocyte maturation and embryonic development. Conventionally, antioxidants have been applied systems to improve oocyte maturation and blastocyst rates. Formononetin (FMN) is a flavonoid that has been shown to have various pharmacological effects, including antioxidants.
View Article and Find Full Text PDFUnraveling the synthetic strategy, structure activity relationship of azetidinones: Insights into their multidrug and toxin extrusion protein (MATE transporter) inhibition facilitating drug development against MDR.
Bioorg Chem
January 2025
Medicinal Chemistry Research Laboratory, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Campus-2, Ghatikia, Kalinga Nagar, Bhubaneswar, Odisha 751003, India. Electronic address:
Heterocyclic chemistry gathered a wide audience due to their presence in potential drug candidates and being attractive synthons initiating several retro-syntheses the organic as well as in medicinal chemistry fields. Among them, azetidinones have been a subject of discussion due to their serendipity, curiosity, versatility by Penicillin and Cephalosporins as β-lactam antibiotics. Despite possessing a large margin of biological activities, azetidinones mainly work as antimicrobial, interfering with bacterial cell-wall synthesis blocking transpeptidase.
View Article and Find Full Text PDFOptimizing extrusion-based 3D bioprinting of plant cells with enhanced resolution and cell viability.
Biofabrication
January 2025
Mechanical Engineering, Tsinghua University, A421 Lee Shau Kee Building, Tsinghua Uniersity, Haidian District, Beijing, 100084, CHINA.
3D bioprinting of plant cells has emerged as a promising technology for plant cell immobilization and related applications. Despite the numerous progress in mammal cell printing, the bioprinting of plant cells is still in its infancy and needs further investigation. Here, we present a systematic study on optimizing the 3D bioprinting of plant cells, using carrots as an example, towards enhanced resolution and cell viability.
View Article and Find Full Text PDFPlacental Hypoxia-Induced Ferroptosis Drives Vascular Damage in Preeclampsia.
Circ Res
January 2025
Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario, Canada (C.P., S.A., J.W.A., R.L., F.N., J.S., I.C.).
Background: Iron is an essential micronutrient for cell survival and growth; however, excess of this metal drives ferroptosis. Although maternal iron imbalance and placental hypoxia are independent contributors to the pathogenesis of preeclampsia, a hypertensive disorder of pregnancy, the mechanisms by which their interaction impinge on maternal and placental health remain elusive.
Methods: We used placentae from normotensive and preeclampsia pregnancy cohorts, human H9 embryonic stem cells differentiated into cytotrophoblast-like cells, and placenta-specific preeclamptic mice.
Convergent pairs of highly transcribed genes restrict chromatin looping in Dictyostelium discoideum.
Nucleic Acids Res
January 2025
Laboratory of Structural and Functional Organization of Chromosomes, Institute of Gene Biology, Russian Academy of Sciences, 34/5 Vavilov St., 119334 Moscow, Russia.
Dictyostelium discoideum is a unicellular slime mold, developing into a multicellular fruiting body upon starvation. Development is accompanied by large-scale shifts in gene expression program, but underlying features of chromatin spatial organization remain unknown. Here, we report that the Dictyostelium 3D genome is organized into positionally conserved, largely consecutive, non-hierarchical and weakly insulated loops at the onset of multicellular development.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!