Cell Membrane Pores
Cell Membrane Pores - Related Videos
07:07
Creating Transient Cell Membrane Pores Using a Standard Inkjet Printer
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Cited by 23 •
2012
A description of the methods used to convert an HP DeskJet 500 printer into a bioprinter. The printer is capable of processing living cells, which causes transient pores in the membrane. These pores can be utilized to incorporate small molecules, including fluorescent G-actin, into the printed cells.
03:20
Generating Plasma Membrane Vesicles from Bone Marrow Stem Cells
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2025
This video demonstrates a method to generate plasma membrane vesicles from bone marrow stem cells by passing them rapidly through a membrane filter. These PMVs show potential for cytoplasm replacement therapy.
01:23
Pore Size Distribution
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2024
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio. Adequate...
18:25
Live Imaging Assay for Assessing the Roles of Ca2+ and Sphingomyelinase in the Repair of Pore-forming Toxin Wounds
0 Views •
Cited by 13 •
2013
Live imaging of cells exposed to the lipophilic dye FM1-43 allows precise determination of the kinetics by which pore-forming toxins are removed from the plasma membrane. This is a sensitive assay that can be used to assess requirements for Ca2+, sphingomyelinase and other factors on plasma membrane repair.
12:19
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
0 Views •
Cited by 4 •
2013
In this video, we will demonstrate modification techniques for porous metallic implants to improve their functionality and to control cell migration. Techniques include development of pore gradients to control cell movement in 3D and production of basement membrane mimics to control cell movement in 2-D. Also, a HPLC-based method for monitoring implant integration in-vivo via analysis of blood proteins is described.
FAQs
Pore selectivity depends on the physical and chemical properties of the pathway. Its size can restrict access by excluding larger substances, while charge favors or opposes particular ions or molecules. These properties allow different pores to support distinct transport patterns rather than permitting every substance to cross equally, helping cells regulate internal composition.
Substances can move through a pore in response to concentration differences, electrical gradients, or both. A concentration difference favors movement from a region of greater abundance toward a region of lower abundance, while an electrical gradient influences charged particles according to the membrane’s charge conditions. Together, these forces determine the direction and extent of movement.
Gating controls whether a pore is available for passage. According to the overview, chemical signals can influence this behavior, allowing transport to change in response to cellular conditions. This regulation prevents unrestricted exchange and connects membrane permeability with communication, signaling, and the maintenance of internal conditions.
Selective movement of ions through membrane pores can alter the electrical state across the lipid bilayer. Because pore size, charge, and gating affect which ions pass and when, cells can regulate electrical changes rather than allowing uncontrolled ion movement. This mechanism provides a basis for electrical signaling and links membrane transport with cellular communication.
Ion channels provide an important research context for examining membrane pores because they illustrate how protein-based pathways control ion movement. Researchers can relate channel behavior to selectivity, gating, concentration differences, and electrical gradients. This framework helps connect molecular pore properties with larger biological outcomes such as electrical signaling and regulation of cellular conditions.
Studying membrane pores helps researchers examine how toxins or infectious agents may affect membrane permeability and cellular control. Changes in pore selectivity, opening behavior, or passage of ions and molecules can disrupt osmotic balance, electrical conditions, or communication. These connections make membrane pore biology relevant to investigating how harmful biological interactions alter cells.
Membrane pore research also informs membrane-based technologies such as nanopore sensing. The same principles of pathway size, charge, selective passage, and controlled access help explain how pores can distinguish or monitor molecules as they move through an opening. This application extends the biological study of selective permeability into technology designed around molecular transport.