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Related Concept Videos

iPS Cell Differentiation01:22

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...
Stem Cell Culture01:17

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
Induced Pluripotent Stem Cells01:13

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...
Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...

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A Live-cell Image-Based Machine Learning Strategy to Monitor Pluripotent Stem Cell Differentiation
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A Live-cell Image-Based Machine Learning Strategy to Monitor Pluripotent Stem Cell Differentiation

Published on: October 4, 2024

Imaging stem cell differentiation for cell-based tissue repair.

Zhenghong Lee1, James Dennis, Eben Alsberg

  • 1Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA.

Methods in Enzymology
|February 21, 2012
PubMed
Summary
This summary is machine-generated.

Tracking mesenchymal stem cell (MSC) differentiation noninvasively is crucial for cell-based therapies. A novel reporter gene system allows real-time imaging of MSCs differentiating into bone or cartilage, advancing regenerative medicine.

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Area of Science:

  • Regenerative Medicine
  • Cell Biology
  • Biotechnology

Background:

  • Mesenchymal stem cells (MSCs) hold significant promise for tissue regeneration and cell-based therapies.
  • Effective tracking of transplanted MSCs and their differentiation is essential for optimizing therapeutic outcomes.
  • Current methods for tracking stem cell differentiation are limited, particularly noninvasive in vivo approaches.

Purpose of the Study:

  • To develop a novel, noninvasive method for longitudinal tracking of mesenchymal stem cell differentiation in vivo.
  • To create a reporter gene system that visualizes osteogenic and chondrogenic differentiation of MSCs.
  • To demonstrate the proof-of-principle for tracking stem cell differentiation using a differentiation-specific promoter-driven reporter gene system.

Main Methods:

  • A reporter gene system was constructed using differentiation-specific marker gene promoters to drive reporter gene expression.
  • This system was introduced into human MSCs via lentiviral vectors.
  • In vivo imaging was employed to track the osteogenic differentiation of implanted MSCs.

Main Results:

  • The developed reporter gene system successfully enabled noninvasive, repeated imaging of stem cell differentiation in vivo.
  • Osteogenic differentiation of implanted MSCs was visualized, demonstrating the system's proof-of-principle.
  • The lentiviral vector approach allows flexibility, including the use of human cells.

Conclusions:

  • A novel differentiation-specific reporter gene system provides a powerful tool for tracking MSC differentiation noninvasively.
  • This approach facilitates the optimization of cell-based therapies for bone and cartilage regeneration.
  • The framework is adaptable for tracking other cell types and differentiation lineages.