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Related Concept Videos

Cellular Differentiation00:57

Cellular Differentiation

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How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
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Forced Transdifferentiation01:28

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Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
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Cell-matrix's Response to Mechanical Forces01:13

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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. 
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Molecular Factors Affecting Cell Division01:27

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Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Cells Coordinate Growth and Proliferation02:36

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Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
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Morphogenesis02:19

Morphogenesis

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Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
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Related Experiment Video

Updated: Feb 17, 2026

A High-throughput Cell Microarray Platform for Correlative Analysis of Cell Differentiation and Traction Forces
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Physical forces modulate cell differentiation and proliferation processes.

Laurent Schwartz1, Jorgelindo da Veiga Moreira2, Mario Jolicoeur3

  • 1Assistance Publique des Hôpitaux de Paris, Paris, France.

Journal of Cellular and Molecular Medicine
|December 2, 2017
PubMed
Summary

This study proposes a new "mitochondria-centrism" hypothesis, suggesting physical forces, not just genes, drive cell behavior. This energy-oriented framework highlights mitochondria's role in controlling gene expression and cell functions.

Keywords:
biologyelectrical potentialsgene expressionmechanical stressmitochondriaparadigm shiftthermodynamics

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Area of Science:

  • Cell Biology
  • Biophysics
  • Systems Biology

Background:

  • The current gene-centric paradigm struggles to fully explain cellular differentiation and behavior.
  • A significant gap exists between genetic information and predicting cell functions.
  • Physical mechanisms, like energy flow, guiding cell processes are often overlooked.

Purpose of the Study:

  • To propose a complementary conceptual framework for cell properties based on energy and physical forces.
  • To introduce a "mitochondria-centrism" hypothesis as an alternative to gene-centrism.
  • To explore the role of physical forces in cellular differentiation and proliferation.

Main Methods:

  • Literature review of physical-biological interactions.
  • Analysis from the perspectives of fluid mechanics, solid mechanics, electricity, and thermodynamics.
  • Examination of energy flow through cells and tissues.

Main Results:

  • Consistent evidence indicates physical forces control cell proliferation and differentiation.
  • Physical forces appear to interact with cell metabolism primarily at the mitochondrial level.
  • Mitochondria are proposed to be key regulators of gene expression.

Conclusions:

  • Physical forces play a crucial role in cellular processes, complementing genetic control.
  • A shift towards an energy-oriented, mitochondria-centric view is suggested for biology.
  • This framework offers a new perspective on understanding cell behavior and differentiation.