stem cell
Let an agent explain stem cells and their kinds, relay biology, established and experimental therapies and ethics from scientific and regulatory sources, and distinguish proven treatments from unproven clinics.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain stem cells and their kinds, relay biology, established and experimental therapies and ethics from scientific and regulatory sources, and distinguish proven treatments from unproven clinics.
An undifferentiated cell that can renew itself by division and give rise to specialised cell types, including embryonic stem cells, induced pluripotent stem cells reprogrammed from adult cells, and adult or resident stem cells such as haematopoietic, intestinal crypt, neural and neuroepithelial stem cells that maintain tissues, as well as cancer stem cells proposed to sustain tumours such as glioblastoma and breast cancer; stem cells underpin development, regeneration, research models and therapies such as bone marrow transplantation.
What it is for: Renewal and regeneration of tissues; research and therapy.
It can be explain kinds and properties; relay therapies and evidence; present ethics and regulation; distinguish proven from unproven treatments.
Distinguishing features
Self-renewal
Potency levels
Niche regulation
Therapeutic and ethical significance
What it looks like
Not visible to the eye; cells in culture or tissue niches.
Physical character
first iPSC report: 2006 year - Yamanaka
haematopoietic transplants: over 1.5 million count - cumulative worldwide
How it is recognised
Self-renewing cells that differentiate
Embryonic, induced pluripotent, adult, resident and cancer stem cells
Progenitor cells have limited renewal; differentiated cells are specialised
Related models
is a kind of - in registry terms, for adult stem cells
gives rise to - through differentiation
is used in - such as bone marrow transplantation
is studied in - the field
In practice
Families and kinds
embryonic stem cells
induced pluripotent stem cells
adult stem cells such as haematopoietic, mesenchymal, intestinal crypt and neural stem cells
neuroepithelial and other developmental stem cells
cancer stem cells including glioblastoma and breast cancer stem cells
stem cells in plants
Identifiers
MeSH D013234 stem cells
Standards and regulation
Regulation of cell therapies by agencies such as the FDA and EMA
Laws on embryo research by country
ISSCR guidelines for stem cell research and clinical translation
Clinical trial regulation
Failure modes and hazards
Unproven stem cell clinics harming patients, as reported
Tumour formation from pluripotent cells
Agents giving personal medical advice
Ethical controversy over embryo use
Also called
+96
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What stem cells are.
Science.
Definition
Definition and kinds.
Definition
Definition.
- What are stem cells, and how do embryonic, induced pluripotent and adult stem cells differ? definition
- Is the question about stem cells, progenitor cells or differentiated cells? boundary
Biology
Biology.
Biology
Biology.
- How do self-renewal, potency and niches work, and what are cancer stem cells? definition
- Which entry fits the specific cell type? action
Therapy Therapies.
Clinical.
Established
Established therapies.
Established
Established.
- Which stem cell therapies are established, such as haematopoietic transplantation, and for what conditions? provenance
- Is the user asking about their own treatment, which needs a clinician? boundary
Unproven
Unproven treatments.
Unproven
Unproven.
- What do regulators and the ISSCR say about unproven stem cell clinics? provenance
- Which references are standard? provenance
Ethics Ethics and regulation.
Attribution.
Ethics
Ethics.
Ethics
Ethics.
- What ethical debates surround embryonic stem cells and reprogramming, with positions attributed? provenance
- Is the presentation neutral? boundary
Regulation
Regulation.
Regulation
Regulation.
- How are stem cell research and therapies regulated by country? provenance
- Which sources are cited? provenance
Context Research and history.
Context.
Research
Research frontiers.
Research
Research.
- What research exists on organoids, gene editing and regenerative therapies, with findings attributed? provenance
- Which entry fits organoid? action
History
History.
History
History.
- How did stem cell science develop from Till and McCulloch to Yamanaka? provenance
- Which entry fits the history of stem cell research? action
What the second pass must settle
- Should induced pluripotent stem cell and cancer stem cell be separate entries?
- How should regulatory sources be linked?
- The registry entry has merged aliases naming specific cell types; should they be split off?