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Related Concept Videos

Stem Cell Niche01:26

Stem Cell Niche

The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
Cellular Differentiation00:57

Cellular Differentiation

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.
A zygote is a...
Lineage Commitment01:21

Lineage Commitment

Commitment is the  process whereby stem cells:
Forced Transdifferentiation01:28

Forced Transdifferentiation

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.
Artificial transdifferentiation occurs...

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A High-throughput Cell Microarray Platform for Correlative Analysis of Cell Differentiation and Traction Forces
12:04

A High-throughput Cell Microarray Platform for Correlative Analysis of Cell Differentiation and Traction Forces

Published on: March 1, 2017

Force-dependent cell signaling in stem cell differentiation.

Evelyn K F Yim, Michael P Sheetz

    Stem Cell Research & Therapy
    |November 2, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Biophysical cues like stiffness and topography influence stem cell differentiation. Key signaling pathways, including focal adhesions and cytoskeletal contractility, mediate this force-dependent cell fate determination.

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    Efficient Neural Differentiation using Single-Cell Culture of Human Embryonic Stem Cells
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    Efficient Neural Differentiation using Single-Cell Culture of Human Embryonic Stem Cells

    Published on: January 18, 2020

    Area of Science:

    • Biomaterials Science
    • Stem Cell Biology
    • Mechanobiology

    Background:

    • Stem cells respond to biochemical and biophysical signals from their environment.
    • Biophysical cues, including substrate stiffness and topography, are increasingly recognized for their role in directing stem cell differentiation and fate.
    • The precise mechanisms underlying biophysically induced differentiation are not fully understood.

    Purpose of the Study:

    • To review the current understanding of how biophysical signals influence stem cell differentiation.
    • To highlight key molecular components involved in force-mediated stem cell differentiation.
    • To discuss recent advancements in the study of mechanotransduction in stem cells.

    Main Methods:

    • Literature review focusing on mechanobiology and stem cell differentiation.
    • Analysis of studies investigating the role of extracellular matrix and applied forces.
    • Examination of signaling pathways involved in force transduction.

    Main Results:

    • Biophysical cues like substrate stiffness and topography can significantly direct stem cell differentiation.
    • Focal adhesions, cytoskeletal contractility, Rho GTPase signaling, and nuclear regulation are critical in force-mediated differentiation.
    • Mechanotransduction machinery plays a vital role in translating physical forces into cellular responses.

    Conclusions:

    • Biophysical cues are potent regulators of stem cell fate.
    • Understanding the molecular mechanisms of mechanotransduction is crucial for harnessing stem cell differentiation.
    • Further research into force-dependent differentiation holds promise for regenerative medicine.