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Related Concept Videos

Adult Stem Cells01:33

Adult Stem Cells

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Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
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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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Induced Pluripotent Stem Cells01:13

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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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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
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Clark Hull's drive-reduction theory, introduced in the 1940s and 1950s and often termed the "push theory" of motivation, provides a framework for understanding how biological and learned drives influence behavior. Hull suggested that motivation originates from the need to alleviate physiological tension caused by unmet biological necessities. The theory proposes that when a basic need, such as hunger or sleep, goes unfulfilled, it creates an internal imbalance. This imbalance, or...
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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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Efficient Differentiation of Human Pluripotent Stem Cells into Liver Cells
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Pulling and Pushing Stem Cells to Control Their Differentiation.

Nureddin Ashammakhi1, Outi Kaarela1, Patrizia Ferretti2

  • 1Division of Plastic Surgery, Department of Surgery, Oulu University, Oulu, Finland.

The Journal of Craniofacial Surgery
|February 28, 2018
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Summary
This summary is machine-generated.

Researchers are advancing regenerative therapies using new tools like stimuli-responsive materials and 4D biofabrication. A key development involves using magnetic fields to mechanically stretch nanoparticle-loaded stem cells, guiding their differentiation for potential clinical applications.

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Stem Cell Biology

Background:

  • Significant progress has been made in regenerative medicine, driven by innovations in materials science, biofabrication, and stem cell manipulation.
  • Current research focuses on developing precisely controlled and customized regenerative therapies for various medical applications.

Purpose of the Study:

  • To provide a perspective on recent advances in regenerative medicine.
  • To highlight a novel method for inducing stem cell differentiation using mechanical stretching and magnetic fields.

Main Methods:

  • Review of recent advancements in stimuli-responsive materials, 4D biofabrication, and stem cell fate control.
  • Focus on a specific study using magnetic fields to mechanically stretch nanoparticle-laden stem cells.
  • Induction of cardiac lineage differentiation through physical cues.

Main Results:

  • Demonstration of mechanical stretching of nanoparticle-laden stem cells via external magnetic fields.
  • Successful induction of defined cardiac lineage differentiation in stem cells.
  • Expansion of tools and potential applications in tissue engineering.

Conclusions:

  • While numerous tools are available for tissue engineering, clinical translation requires further validation with human cells.
  • The described method offers a promising approach for controlled stem cell differentiation.
  • Continued research is essential to bridge the gap between laboratory findings and clinical applications in regenerative medicine.