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Related Concept Videos

Stem Cell Niche01:26

Stem Cell Niche

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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Overview Of Cell Separation And Isolation01:20

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A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...
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Cell Co-culture Patterning Using Aqueous Two-phase Systems
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Finding a niche for seam cells?

Charles Brabin1, Alison Woollard

  • 1Department of Biochemistry; University of Oxford; Oxford, UK.

Worm
|September 24, 2013
PubMed
Summary
This summary is machine-generated.

C. elegans seam cells exhibit stem-like division but lack a niche. Their stem-like properties are maintained by protection from differentiation signals, suggesting a role for niche-like interactions in stem cell biology.

Keywords:
differentiationnicheproliferationseam cellsstem cells

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Last Updated: May 7, 2026

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Area of Science:

  • Developmental biology
  • Stem cell biology
  • Cellular biology

Background:

  • C. elegans neuroectodermal seam cells model reiterative asymmetric cell division.
  • Seam cells are not considered 'true' stem cells due to terminal differentiation and lack of a defined niche.
  • A stem cell niche is a microenvironment regulating stem cell proliferation and differentiation.

Purpose of the Study:

  • To discuss the applicability of the stem cell niche concept to C. elegans seam cells.
  • To present findings on how seam cell properties are maintained.
  • To explore implications for stem cell biology.

Main Methods:

  • Analysis of C. elegans larval development.
  • Investigation of seam cell division patterns.
  • Examination of differentiation signals from the hypodermal syncytium.

Main Results:

  • Seam cells undergo reiterative asymmetric divisions during larval development.
  • Stem-like properties of seam cells are partially maintained by shielding from differentiation signals.
  • These signals originate from the surrounding hypodermal syncytium.

Conclusions:

  • The C. elegans seam cell system may possess niche-like regulatory mechanisms.
  • Understanding these signals is crucial for defining the seam cell niche.
  • This research has implications for the broader understanding of stem cell biology and niche interactions.