
Endocytic mechanisms have been suggested to be important for plasma membrane repair in response to pore-forming toxins such as Listeriolysin O (LLO), which form membrane pores that disrupts cellular homeostasis. Yet, little is known about the specific role of distinct endocytic machineries in this process. Here, we have addressed the importance of key endocytic pathways, and developed reporter systems for real-time imaging of the endocytic response to LLO pore formation. We found that loss of clathrin-independent endocytic pathways negatively influenced the efficiency of membrane repair. However, we did not detect any increased activity of these pathways, or co-localisation with the toxin or markers of membrane repair, suggesting that they were not directly involved in removal of LLO pores from the plasma membrane. In fact, markers of clathrin-independent carriers (CLICs) were rapidly disassembled in the acute phase of membrane damage due to Ca2+ influx, followed by a reassembly about 2 min after pore formation. We propose that these endocytic mechanisms might influence membrane repair by regulating the plasma membrane composition and tension, but not via direct internalisation of LLO pores.
LLO, QH301-705.5, Science, Q, Membrane damage, Caveolae, Microbiology, Clathrin-mediated endocytosis, Mikrobiologi, Membrane pore, Clathrin-independent endocytosis, Biology (General), Listeriolysin, CLIC, Repair, Research Article
LLO, QH301-705.5, Science, Q, Membrane damage, Caveolae, Microbiology, Clathrin-mediated endocytosis, Mikrobiologi, Membrane pore, Clathrin-independent endocytosis, Biology (General), Listeriolysin, CLIC, Repair, Research Article
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 17 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
