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Related Concept Videos

Stem Cell Culture01:17

Stem Cell Culture

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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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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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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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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.
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Directed Differentiation of Hemogenic Endothelial Cells from Human Pluripotent Stem Cells
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Human embryonic stem cell derivation and directed differentiation.

A Trounson1

  • 1Monash Immunology Laboratory, Monash University, Clayton, Victoria, Australia. jillian.mcfadyean@med.monash.edu.au

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Summary
This summary is machine-generated.

Human embryonic stem cells (hESCs) offer significant potential for regenerative medicine and therapies. Derived from IVF embryos, hESCs can be cultured indefinitely and differentiated into various cell types for research and clinical applications.

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Area of Science:

  • Stem Cell Biology
  • Developmental Biology
  • Regenerative Medicine

Background:

  • Human embryonic stem cells (hESCs) are derived from early-stage human embryos obtained through in vitro fertilization (IVF).
  • These cells are crucial for understanding human development, disease modeling, and developing novel therapeutic strategies.
  • The derivation and maintenance of hESCs are well-established, offering a valuable resource for scientific research.

Purpose of the Study:

  • To review the established methods for deriving and maintaining human embryonic stem cells (hESCs).
  • To highlight the potential applications of hESCs in functional genomics, drug screening, and cell/gene therapy.
  • To discuss the directed differentiation capabilities of hESCs towards various specialized cell types.

Main Methods:

  • hESCs are derived from morula and blastocyst-stage embryos or inner cell mass (ICM) clusters.
  • Culture conditions include feeder layers (mouse or human somatic cells) or serum-free media, with potential for cell-free culture.
  • Transfection with DNA constructs is feasible, and gene expression/immunological profiles are actively characterized.

Main Results:

  • hESC lines can be established with a success rate of 1:10 to 1:2 embryos used.
  • hESCs can be maintained indefinitely in culture while preserving karyotype, requiring periodic confirmation.
  • Spontaneous differentiation occurs under specific conditions (e.g., absence of feeder layers, overgrowth).
  • Directed differentiation protocols have successfully generated neural cells, cardiac muscle cells, hematopoietic progenitors, and other cell types.

Conclusions:

  • hESCs are a versatile tool for advancing functional genomics, drug discovery, and cell-based therapies.
  • The ability to differentiate hESCs into multiple lineages holds significant promise for regenerative medicine.
  • Continued research into hESC differentiation and application is expected to yield substantial contributions to human medicine.