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Related Concept Videos

Structures of Solids02:22

Structures of Solids

Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
Unit Cells01:18

Unit Cells

A crystal's internal structure is an orderly array of atoms, ions, or molecules, and the details of this array significantly influence the solid's properties. In a crystal, periodically repeating 'structural motifs' - which could be atoms, molecules, or groups thereof - create a 'space lattice.' This is essentially a three-dimensional, infinite array of points, each surrounded by its neighbors in an identical way, forming the basic structure of the crystal.A 'unit cell' is a theoretical...
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Cells with similar structure and function are grouped into tissues. A group of tissues with a specialized function is called an organ. There are four main types of tissue in vertebrates: epithelial, connective, muscle, and nervous.
Overview of Cell-Cell Junctions01:14

Overview of Cell-Cell Junctions

The complex three-dimensional arrangement of cells in any multicellular organism is defined and maintained by interactions of cells with each other and the extracellular matrix. Cell-cell junctions are specialized structures where the multi-protein complexes on one cell interact with the multi-protein complexes on another  cell. These cell junctions are classified  into three main types based on their function — occluding, anchoring, and gap junctions.
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Ionic Crystal Structures02:42

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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
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The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...

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Related Experiment Video

Updated: Jun 13, 2026

Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology
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Cell architecture-cell function dependencies on titanium arrays with regular geometry.

Claudia Matschegewski1, Susanne Staehlke, Ronny Loeffler

  • 1Dept. of Cell Biology, Biomedical Research Center, University of Rostock, Schillingallee 69, 18057 Rostock, Germany.

Biomaterials
|May 4, 2010
PubMed
Summary

Titanium surface topography influences human osteoblast behavior. Microscopic pillar structures reduced cell adhesion and altered cell architecture, impairing function and protein synthesis for tissue engineering implants.

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Creating a Structurally Realistic Finite Element Geometric Model of a Cardiomyocyte to Study the Role of Cellular Architecture in Cardiomyocyte Systems Biology
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Databases to Efficiently Manage Medium Sized, Low Velocity, Multidimensional Data in Tissue Engineering
09:43

Databases to Efficiently Manage Medium Sized, Low Velocity, Multidimensional Data in Tissue Engineering

Published on: November 22, 2019

Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Understanding cell behavior on different surface topographies is crucial for designing effective tissue engineering implants.
  • Titanium (Ti) surface characteristics significantly impact cell responses, influencing implant integration and performance.

Purpose of the Study:

  • To investigate the relationship between microscale topographical features on titanium surfaces and the resulting cell architecture and function of human MG-63 osteoblasts.
  • To determine how specific surface geometries affect cell adhesion, cytoskeleton organization, extracellular matrix production, and integrin expression.

Main Methods:

  • Fabrication of titanium arrays with regular cubic pillar structures (SU-8, 3x3x5 and 5x5x5 µm) and comparison with planar surfaces.
  • Electrochemical surface characterization to assess surface energy properties.
  • Confocal microscopy to analyze actin cytoskeleton organization.
  • Quantification of extracellular matrix proteins (collagen-I, BSP-2) and beta3-integrin expression.

Main Results:

  • Pillar-structured surfaces exhibited lower surface energy, correlating with reduced initial cell adhesion and spreading.
  • Actin cytoskeleton showed altered organization, concentrating at pillar edges instead of forming stress fibers.
  • MG-63 osteoblast function was impaired, with significantly lower synthesis of collagen-I and bone sialo protein (BSP-2).
  • Reduced beta3-integrin expression was observed on pillar-structured surfaces.

Conclusions:

  • Microscale topographical features on titanium surfaces, such as cubic pillars, significantly alter osteoblast architecture and function.
  • Surface geometry influences cell adhesion, cytoskeleton organization, and the production of key extracellular matrix proteins and integrins.
  • These findings are vital for developing biorelevant implant surfaces in tissue engineering by controlling physicochemical factors and cell responses.