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Related Concept Videos

Adaptability of Cytoskeletal Filaments01:12

Adaptability of Cytoskeletal Filaments

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The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments in the cytoskeleton determines their ability to perform various functions within the cell. It can undergo rapid reorganization during processes like cell division or remain stable for several hours as in the interphase. The adaptability of these filaments depends on stringent regulatory mechanisms. The microfilament and microtubules of the...
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Polarity of the Cytoskeleton01:18

Polarity of the Cytoskeleton

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The intrinsic polarity of cells can be primarily attributed to two factors- i) the asymmetric accumulation of mobile components such are regulatory molecules and subcellular components across the cell and ii) the orientation of polar cytoskeletal filaments that make up the cytoskeletal networks, specifically microfilaments, and microtubules arranged along the axis of polarity. Interactions between the cytoskeletal filaments are crucial for the establishment and maintenance of the polar nature...
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Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

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In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
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Microtubule Instability02:17

Microtubule Instability

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Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated...
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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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Studying the Cytoskeleton01:17

Studying the Cytoskeleton

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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
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Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform
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Cytoskeletal Tensegrity in Microgravity.

John Gardiner1

  • 1Independent Researcher, Glebe 2037, Australia.

Life (Basel, Switzerland)
|October 23, 2021
PubMed
Summary
This summary is machine-generated.

Astronauts face physiological and anatomical changes in space due to microgravity. Understanding the cytoskeleton

Keywords:
actincytoskeletonmicrogravitymicrotubuletensegrity

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Area of Science:

  • Space biology
  • Cell biology
  • Human physiology

Background:

  • Human life evolved under Earth's gravity.
  • Space travel exposes astronauts to microgravity.
  • Physiological, mental, and anatomical changes occur in astronauts.

Purpose of the Study:

  • Investigate the effects of microgravity on the human body.
  • Understand the role of cytoskeleton tensegrity in space adaptation.
  • Clarify if space-induced changes are pathological or adaptive.

Main Methods:

  • Focus on the cytoskeleton's role in detecting gravitational force.
  • Examine the tensegrity architecture of the cytoskeleton.
  • Analyze the impact on cellular and organ function.

Main Results:

  • The cytoskeleton is crucial for sensing gravity.
  • Tensegrity architecture is key to cellular responses.
  • Changes in the body and mind are observed during spaceflight.

Conclusions:

  • Cytoskeletal tensegrity is fundamental to understanding life in microgravity.
  • Further research is needed to unravel space adaptation mechanisms.
  • Adaptations to space may involve cytoskeletal reorganization.