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Related Concept Videos

The Structure of Intermediate Filaments01:19

The Structure of Intermediate Filaments

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The intermediate filaments are one of three widely studied cytoskeletal filaments. They are so named as their diameter (10 nm) is in between that of microfilaments (7 nm) and the microtubules (25 nm).  These filaments are highly stable and can remain intact when exposed to high salt concentrations and detergents. These filaments are responsible for providing stability and mechanical support to the cells. They also help in cell adhesion and maintaining tissue integrity.
Intermediate...
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Microtubules in Cell Motility01:24

Microtubules in Cell Motility

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Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
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Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

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Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
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Mechanism of Filopodia Formation01:39

Mechanism of Filopodia Formation

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Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
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Formation of Intermediate Filaments00:57

Formation of Intermediate Filaments

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Intermediate filaments are cytoskeletal proteins with higher tensile strength and flexibility than microfilaments and microtubules. Unlike the other two cytoskeletal proteins, intermediate filament formation lacks the enzymatic activity to hydrolyze nucleotides like ATP and GTP to generate energy for polymerization. Therefore, the formation of intermediate filaments is multistep self-assembly. The involvement of any accessory proteins in intermediate filament formation has not yet been...
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Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

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Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
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Updated: Mar 31, 2026

Quantitative Approaches for Scoring in vivo Neuronal Aggregate and Organelle Extrusion in Large Exopher Vesicles in C. elegans
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Snail-like Particles from Compartmentalized Microfibers.

Jaemin Lee1, Tae-Hong Park2,3, Kyung Jin Lee1,2

  • 1Department of Fine Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, Daejeon, 305-764, Korea.

Macromolecular Rapid Communications
|October 22, 2015
PubMed
Summary
This summary is machine-generated.

Researchers created temperature-responsive microfibers using electrohydrodynamic cojetting. These microfibers can transform into snail-like particles that change shape and function with temperature shifts.

Keywords:
EHD cojettinganisotropic particleselectrospinningmicrocylindermicroparticles

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Soft Robotics

Background:

  • Thermally responsive hydrogels offer tunable properties for advanced applications.
  • Microfluidic techniques enable precise control over material fabrication at the microscale.
  • Compartmentalized structures are crucial for complex functionalities in engineered materials.

Purpose of the Study:

  • To synthesize compartmentalized microfibers using electrohydrodynamic cojetting.
  • To investigate the transformation of these microfibers into temperature-responsive microstructures.
  • To demonstrate programmable shape-shifting for creating functional microparticles.

Main Methods:

  • Electrohydrodynamic cojetting for microfiber synthesis.
  • Utilizing thermally responsive hydrogels.
  • Characterization of hydrogel properties and microfiber morphology.
  • Analysis of shape-shifting behavior in response to temperature changes.

Main Results:

  • Successful synthesis of compartmentalized microfibers from thermally responsive hydrogels.
  • Demonstration of programmable shape-shifting into microcylinders.
  • Formation of snail-like particles capable of structural and functional reconfiguration.
  • Evidence of temperature-induced changes in particle morphology and behavior.

Conclusions:

  • Electrohydrodynamic cojetting is an effective method for fabricating advanced microfibers.
  • The synthesized microfibers exhibit controllable shape-shifting properties based on thermal stimuli.
  • The resulting microparticles hold potential for applications in responsive materials and micro-robotics.