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Related Concept Videos

Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

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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 Cells01:19

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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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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
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The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
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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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Mesenchymal Stem Cell Senescence and Biomaterial-Based Next-Generation Rejuvenation Strategy.

Yiran Zhang1, Rana Judeh1, Sidharth Aravind1

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Cellular senescence impairs tissue regeneration with aging. This review explores rejuvenating senescent mesenchymal stem cells (MSCs) using biomaterials to improve regenerative therapies for age-related diseases.

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Area of Science:

  • Gerontology
  • Regenerative Medicine
  • Biomaterials Science

Background:

  • Tissue regeneration capacity diminishes with age.
  • Cellular senescence is a key factor in aging and reduced regeneration.
  • Mesenchymal stem cells (MSCs) are crucial for tissue repair but senesce with age, limiting therapy.

Purpose of the Study:

  • To review the characteristics and consequences of MSC senescence.
  • To evaluate current antisenescence strategies and their limitations.
  • To explore biomaterial-based approaches for rejuvenating senescent MSCs for improved tissue regeneration.

Main Methods:

  • Literature review of cellular senescence, MSC aging, and antisenescence strategies.
  • Analysis of recent advancements in biomaterials for stem cell modulation.
  • Exploration of biomaterial-MSC interactions for rejuvenation.

Main Results:

  • MSC senescence negatively impacts tissue regeneration.
  • Existing antisenescence therapies have limitations.
  • Biomaterials show promise in modulating stem cell fate and enhancing regeneration.

Conclusions:

  • Biomaterial-based rejuvenation of senescent MSCs offers novel therapeutic avenues.
  • Targeting MSC senescence with biomaterials can advance regenerative medicine for aging-related diseases.
  • Further research into biomaterial-mediated MSC rejuvenation is warranted.