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Related Concept Videos

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Stem Cell Therapy for Tissue Regeneration

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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...
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Multipotency of Hematopoietic Stem Cells01:19

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The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the...
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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
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Lineage Commitment

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Commitment is the  process whereby stem cells:
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Related Experiment Video

Updated: Jun 10, 2025

Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in Mice
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Unwrapping stemness to revive T cells.

Carlson Tsui1, Axel Kallies1

  • 1Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Australia.

Science (New York, N.Y.)
|October 10, 2024
PubMed
Summary

Targeting epigenetic regulators can prevent T cell exhaustion, a critical factor in immune response. This approach offers a new strategy for enhancing immune function in various conditions.

Area of Science:

  • Immunology
  • Epigenetics
  • Cellular Biology

Background:

  • T cell exhaustion is a state of T cell dysfunction.
  • It impairs effective adaptive immunity during chronic infections and cancer.
  • Epigenetic modifications play a crucial role in regulating T cell function.

Purpose of the Study:

  • To investigate the role of epigenetic regulators in T cell exhaustion.
  • To determine if targeting these regulators can reverse or prevent T cell exhaustion.

Main Methods:

  • Utilized mouse models of chronic viral infection.
  • Analyzed gene expression and epigenetic marks in T cells.
  • Administered specific epigenetic drugs to T cells.

Main Results:

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  • Identified key epigenetic regulators associated with T cell exhaustion.
  • Demonstrated that targeting these regulators restored T cell function.
  • Showed a significant reduction in viral load after treatment.

Conclusions:

  • Epigenetic regulation is a critical determinant of T cell exhaustion.
  • Targeting epigenetic regulators represents a promising therapeutic strategy to combat T cell exhaustion and improve immune responses.