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Stem Cell Culture01:17

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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...
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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...
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Induced Pluripotent Stem Cells01:06

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Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
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Stem Cell Therapy for Tissue Regeneration01:21

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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.
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Embryonic Stem Cells00:58

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Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
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Pluripotent Stem Cell Derived Cardiac Cells for Myocardial Repair
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Heart regeneration using pluripotent stem cells.

Shin Kadota1, Yuki Tanaka1, Yuji Shiba1

  • 1Department of Regenerative Science and Medicine, Institute for Biomedical Sciences, Shinshu University, 3-1-1 Asahi, Matsumoto 390-8621, Japan.

Journal of Cardiology
|July 22, 2020
PubMed
Summary
This summary is machine-generated.

Pluripotent stem cells (PSCs) show promise for heart regeneration, but immature PSC-derived cardiomyocytes (PSC-CMs) can cause arrhythmias. Further research is needed to overcome limitations before widespread clinical use.

Keywords:
CardiomyocyteCell therapyHeart diseasePluripotent stem cellTransplantation

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Area of Science:

  • Regenerative Medicine
  • Cardiology
  • Stem Cell Biology

Background:

  • Pluripotent stem cells (PSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), offer significant potential for treating heart diseases.
  • Preclinical studies demonstrate functional benefits of transplanting PSC-derived cardiomyocytes (PSC-CMs) into cardiac tissues.
  • Immature characteristics of PSC-CMs can lead to ectopic pacemaker activity and transient ventricular arrhythmias post-transplantation due to electrical coupling with host tissue.

Purpose of the Study:

  • To review current knowledge on the use of PSC-CMs for cardiac regeneration.
  • To discuss the potential benefits and limitations of PSC-CMs in heart repair.
  • To highlight perspectives on advancing PSC-CM therapies, considering recent clinical trial developments.

Main Methods:

  • Literature review of preclinical and clinical studies on PSC-CM transplantation for heart regeneration.
  • Analysis of data regarding functional outcomes and adverse events, specifically arrhythmias.
  • Synthesis of current understanding of PSC-CM electrophysiology and graft-host integration.

Main Results:

  • PSC-CMs possess a high capacity for cardiogenesis, showing promise in preclinical models.
  • Transient ventricular arrhythmias have been observed in animal models following PSC-CM transplantation.
  • Electrical immaturity of PSC-CMs is a key factor contributing to arrhythmias after engraftment.

Conclusions:

  • PSC-CMs hold great potential for regenerative medicine in cardiology.
  • Addressing the immaturity and arrhythmogenic potential of PSC-CMs is crucial for safe and effective clinical application.
  • The field is advancing rapidly, with ongoing efforts to optimize PSC-CMs for heart regeneration therapies.