Stem cells are cells capable of dividing to renew themselves and of giving rise to more specialised cell types, and in research they are tracked through cell-line registries that record provenance and reporting metadata. This article scopes stem cells strictly to research, registries and governance — it does not address therapies, treatments or clinical use.
For research-data infrastructure, the key questions are definitional and administrative: what type of cell line is being used, where it came from, under what consent, and how its use is reported so that studies remain transparent and reproducible.
Types of stem cells at a definitional level
Stem cells are commonly grouped into three broad categories used in research. The distinctions matter for registries because provenance and governance requirements differ by type.
| Type | Definitional description |
|---|---|
| Embryonic stem cells | Derived from early-stage embryos in a research setting; broad capacity to give rise to many cell types |
| Induced pluripotent stem cells (iPSCs) | Adult cells reprogrammed in the laboratory to a pluripotent-like state |
| Adult (tissue) stem cells | Found within tissues; more limited in the cell types they typically generate |
These are definitional categories rather than clinical claims. Recording the precise type — and the laboratory line identifier — is essential metadata, much like the controlled terms catalogued in the CASRAI dictionary.
Cell-line registries and persistent identifiers
A stem-cell registry is a curated database that records standardised information about research cell lines, including a stable identifier, the line’s origin and the conditions under which it was derived. The concept exemplified by resources such as a human pluripotent stem cell registry (the hPSCreg concept) is to give each line a persistent, citable identifier and a consistent metadata record.
Persistent identifiers for cell lines play the same role they play across the research ecosystem: they disambiguate one line from another and link it to the studies that used it. This mirrors the wider identifier landscape described in our overview of persistent identifiers in 2026.
Provenance: tracking where a line came from
Provenance is the documented history of a cell line — its derivation, the consent under which source material was obtained, and any ethical approvals associated with its creation and use. Robust provenance is a compliance requirement as much as a scientific one, ensuring that the line’s permitted uses are clear and auditable.
Because consent and ethical-approval terms govern how a line may be used and shared, this provenance metadata must accompany the line through the research lifecycle. The same governance logic underpins responsible data exchange in our guide to genomic data-sharing standards.
Reporting and governance for reproducibility
Transparent reporting of which cell line was used, with its registry identifier and provenance, lets independent researchers interpret and build on a study correctly. Misidentified or undocumented lines are a known source of irreproducibility, so registries and clear reporting requirements directly support the goals covered in our reproducibility news. For practical advice on documenting research resources, see our guidance for authors.
Frequently asked questions
What are the main types of stem cells used in research?
At a definitional level, research commonly distinguishes embryonic stem cells, induced pluripotent stem cells reprogrammed from adult cells, and adult tissue stem cells. Each category carries different provenance and governance requirements.
What is a stem-cell registry?
A stem-cell registry is a curated database that gives each research cell line a persistent identifier and a standardised record of its origin, derivation conditions and consent, supporting transparent and citable reporting.
Why does provenance matter for stem-cell lines?
Provenance documents a line’s derivation, consent and ethical approvals, which together define how the line may be used and shared. Without it, permitted uses are unclear and studies are harder to reproduce or audit.
Does this guide cover stem-cell therapies?
No. This guide is scoped to research, registries, provenance and governance. It does not address therapies, treatments or clinical applications.
