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Related Concept Videos

Source And Potency Of Stem Cells01:27

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Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
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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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The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...
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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 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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Stem cells: The cell that does it all.

Simona Chera1, Fabian Rentzsch2

  • 1Center for Diabetes Research, Department of Clinical Science, University of Bergen, 5021 Bergen, Norway.

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|June 6, 2023
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Summary
This summary is machine-generated.

A single adult stem cell in the cnidarian Hydractinia symbiolongicarpus can generate all cell types. This finding reveals the remarkable regenerative capacity of this marine invertebrate for tissue maintenance.

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Area of Science:

  • Developmental Biology
  • Regenerative Medicine
  • Marine Biology

Background:

  • Tissue homeostasis relies on continuous cell replacement.
  • Stem cells are crucial for generating diverse cell types.
  • Understanding stem cell potential is key to regenerative processes.

Purpose of the Study:

  • To investigate the regenerative capabilities of stem cells in Hydractinia symbiolongicarpus.
  • To determine if a single stem cell can replenish all somatic and germ line cells.
  • To elucidate the mechanisms of tissue maintenance in cnidarians.

Main Methods:

  • Utilized genetic lineage tracing in Hydractinia symbiolongicarpus.
  • Monitored the fate of individual adult stem cells.
  • Analyzed the differentiation potential of stem cells into various cell lineages.

Main Results:

  • A single adult stem cell was sufficient to generate all somatic cell types.
  • The same stem cell also gave rise to germ line cells.
  • Demonstrated the totipotency of adult stem cells in this species.

Conclusions:

  • Hydractinia symbiolongicarpus possesses a potent stem cell system for tissue regeneration.
  • A single stem cell can maintain the organism throughout its life.
  • This study provides insights into the fundamental principles of stem cell biology and regeneration.