Multipotent stromal stem cells from human placenta demonstrate high therapeutic potential.
Level 5 - mechanism / opinion, no new human data
Preclinical laboratory and ex vivo tissue model study with no human clinical trial data.
PubMed 23197815 · doi:10.5966/sctm.2011-0021
What was done
Researchers isolated human chorionic mesenchymal stem cells (hCMSCs) from term placenta chorion. They evaluated proliferative capacity, telomere length dynamics, and embryonic stem cell marker expression (OCT-4, NANOG, SSEA-3, TRA-1-60). In vitro differentiation across all three germ layers was evaluated, and therapeutic repair capacity was tested in vitro in human lung epithelial cultures and in an ex vivo-perfused human lung model injured with Escherichia coli endotoxin.
What was found
The cells expanded for >100 population doublings without a decrease in telomere length and without telomerase activity. Cells successfully differentiated in vitro into ectoderm (neuron-like cells), mesoderm (adipocytes, osteoblasts, endothelial-like cells), and endoderm (hepatocytes). The cells facilitated repair of injured epithelium in both in vitro cultures and the ex vivo-perfused human lung model. No quantitative numbers, effect sizes, or p-values were provided in the abstract.
Why it matters
This work identifies human term placental chorion as an accessible source of multipotent stem cells with high proliferative capacity and multilineage differentiation potential for tissue repair research.
Limits
This is an exclusively preclinical bench and ex vivo model study without human clinical or in vivo testing. The abstract omits sample sizes, quantitative metrics of repair, and statistical comparisons.
Cited by
- supports Frans Kuypers published papers in 2009 and 2012 demonstrating that cells isolated from human term placenta can be cultured to differentiate into multiple cell types such as neurons and heart cells.