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Related Concept Videos

Cadherins in Tissue Organization01:19

Cadherins in Tissue Organization

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The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
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Integrins01:10

Integrins

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Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM.
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Cancer Cell Migration through Invadopodia01:35

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Invadosome is a broad category of cell surface structures with proteolytic activity that  degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
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Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
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Activation of Integrins01:15

Activation of Integrins

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Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling."
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Selectins01:25

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Cell adhesion is  an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain,...
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Related Experiment Video

Updated: Jan 15, 2026

A 3D Spheroid Model as a More Physiological System for Cancer-Associated Fibroblasts Differentiation and Invasion In Vitro Studies
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MUC15 Ectodomain Architecture Regulates Integrin Clustering to Control Cancer Metastasis.

Simei Zhang1,2,3, Hongyuan Zhu4,5, Zeen Zhu1,2,6

  • 1Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|October 13, 2025
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The size distribution of cell surface glycoproteins, like MUC15, is a critical factor in cancer metastasis. Glycocalyx architecture physically controls cell adhesion and metastatic potential, offering new therapeutic targets.

Keywords:
ECM remodelingcancer metastasisglycocalyxintegrinsmechanotransduction

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Area of Science:

  • Biophysics
  • Cell Biology
  • Cancer Research

Background:

  • Cancer metastasis is influenced by physical cues like matrix stiffness and ligand density.
  • The cell-surface glycocalyx, a complex carbohydrate layer, is increasingly recognized for its role in cellular processes.

Purpose of the Study:

  • To identify and characterize the role of cell-surface glycocalyx architecture as a regulator of cancer metastasis.
  • To investigate how glycoprotein size distribution influences integrin adhesion and metastatic outcomes.

Main Methods:

  • Utilized mathematical modeling and domain truncation experiments to analyze glycoprotein function.
  • Investigated the interaction of MUC15 (a small glycoprotein) with focal adhesions and integrins.
  • Conducted in vivo studies using pancreatic cancer models to validate findings.

Main Results:

  • Glycoprotein size distribution, exemplified by MUC15, dictates integrin adhesion states and metastatic potential.
  • MUC15's anti-metastatic effects are dependent on its ectodomain, indicating a physical mechanism.
  • Modulating MUC15 levels in vivo altered metastasis, aligning with mathematical predictions.

Conclusions:

  • Cell-surface glycocalyx architecture is a novel mechanical regulator of cancer progression.
  • Glycoprotein size distribution is a critical determinant of cancer metastasis.
  • Targeting glycoprotein size offers potential therapeutic strategies for cancer metastasis.