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Related Concept Videos

Regulation of Hematopoietic Stem Cells01:01

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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...
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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 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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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Embryonic Stem Cells00:57

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Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
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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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The regulatory sciences for stem cell-based medicinal products.

Bao-Zhu Yuan1, Junzhi Wang

  • 1National Institutes for Food and Drug Control, Beijing, 100050, China.

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Summary
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Recent stem cell research shows progress in clinical trials and approved products. However, challenges in understanding stem cell biology and regulations require improved regulatory science for safe and effective stem cell therapies.

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Area of Science:

  • Regenerative Medicine
  • Stem Cell Biology
  • Regulatory Science

Background:

  • Stem cell research has advanced significantly, with many studies progressing from preclinical to clinical stages.
  • Preliminary evidence of effectiveness and a generally safe profile have facilitated this progress.
  • Several stem cell-based products have gained marketing approval from national regulatory authorities.

Purpose of the Study:

  • To review recent achievements in stem cell studies, including preclinical and clinical advancements.
  • To examine current regulations governing stem cell products.
  • To identify challenges and propose improvements in stem cell regulatory science.

Main Methods:

  • Literature review of recent stem cell research achievements.
  • Analysis of existing national and international regulatory frameworks for stem cell products.
  • Synthesis of challenges and formulation of recommendations for regulatory science enhancement.

Main Results:

  • Significant progress in stem cell research, with notable advancements in clinical applications.
  • Existing regulatory frameworks vary, and some countries are still establishing appropriate systems.
  • Critical issues persist, including incomplete understanding of stem cell biology and associated risks.

Conclusions:

  • Stem cell regulatory science needs establishment or improvement to effectively evaluate product quality, safety, and efficacy.
  • Addressing knowledge gaps in stem cell biology and risk factors is crucial.
  • Enhancing regulatory sciences will promote the development of well-regulated stem cell therapies aligned with scientific advancements.