Mapping human adult hippocampal neurogenesis with single-cell transcriptomics: Reconciling controversy or fueling the debate?
Level 5 - mechanism / opinion, no new human data
Narrative review and secondary re-analysis of basic science transcriptomic datasets (by design analogy)
PubMed 37015226 · doi:10.1016/j.neuron.2023.03.010
What was done
The authors critically evaluated and re-analyzed previously published single-cell transcriptomic datasets from the adult human hippocampus to assess evidence regarding adult hippocampal neurogenesis (AHN) and identify sources of discrepancy across studies.
What was found
The abstract reports no numerical values or sample counts. It identifies that single-cell RNA sequencing studies of the human hippocampus have produced conflicting findings, driven by methodological, conceptual, and biological confounding factors that complicate transcriptomic profiling of neurogenesis.
Why it matters
This paper clarifies why advanced single-cell technologies have not yet settled the controversy over whether the adult human brain generates new neurons, emphasizing the need for standardized technical and analytical frameworks.
Limits
The abstract provides no quantitative data, cohort characteristics, or details on the number and composition of datasets re-analyzed. The study is a secondary re-evaluation of basic science sequencing data rather than new primary tissue sampling or clinical investigation.
Cited by
- supports Whether adult neurogenesis occurs in the human brain remains an unresolved scientific debate.