Summary
Specialised microenvironments that regulate whether stem cells divide, stay quiet or differentiate.
In depth
The niche supplies signals (Wnt, Notch, BMP), adhesion and physical cues. Examples: crypt base in the gut, bulge in hair follicles, bone marrow niche for HSCs, and the germline niche in Drosophila ovary. Niche loss or damage affects stem cell fate.
Niche signals maintain quiescence or promote division. Asymmetric division keeps one daughter in the niche. Niche ageing contributes to loss of function.
Remember: removing a stem cell from its niche usually triggers differentiation.
Frequently asked questions
What is Stem Cell Niches?
Specialised microenvironments that regulate whether stem cells divide, stay quiet or differentiate.
Which area of biology covers Stem Cell Niches, and how advanced is it?
Stem Cell Niches is one of the 54 topics in Developmental Biology. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Regenerative Development, Epithelial-Mesenchymal Transition, Embryonic Stem Cells.
Can you give an example of Stem Cell Niches?
Ageing alters niche signals, reducing regeneration.
What should I learn before Stem Cell Niches?
Work through the Beginner topics in Developmental Biology first, such as Fertilisation, Zygote, Embryo, then return to Stem Cell Niches. Advanced topics assume the Intermediate vocabulary.
What topics are related to Stem Cell Niches?
The closest topics to Stem Cell Niches are Regenerative Development, Epithelial-Mesenchymal Transition, Embryonic Stem Cells, Induction. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Stem Cell Niches?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Stem Cell Niches. To practise the whole of Developmental Biology, use the Developmental Biology quiz.
How is Stem Cell Niches different from Regenerative Development?
Stem Cell Niches: Specialised microenvironments that regulate whether stem cells divide, stay quiet or differentiate. Regenerative Development: Some animals reactivate developmental programs to regrow organs after injury. Read both side by side and note what each one explains.
How should I study Stem Cell Niches step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Regenerative Development and explain the difference aloud. Finally, take the Developmental Biology quiz and come back to this page for any question you miss.