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Multipotent mesenchymal stem cells from human placenta: critical parameters for isolation and maintenance of stemness after isolation


Semenov, O V; Koestenbauer, S; Riegel, M; Zech, N; Zimmermann, R; Zisch, A; Malek, A (2010). Multipotent mesenchymal stem cells from human placenta: critical parameters for isolation and maintenance of stemness after isolation. American Journal of Obstetrics and Gynecology, 202(2):193.e1-193.e13.

Abstract

OBJECTIVE: This study was undertaken to isolate and characterize multipotent mesenchymal stem cells from term human placenta (placenta-derived mesenchymal stem cells, PD-MSCs). STUDY DESIGN: Sequential enzymatic digestion was used to isolate PD-MSCs in which trypsin removes the trophoblast layer, followed by collagenase treatment of remaining placental tissue. Karyotype, phenotype, growth kinetics, and differentiability of PD-MSC isolates from collagenase digests were analyzed. RESULTS: PD-MSC isolation was successful in 14 of 17 cases. Karyotyping of PD-MSC isolates from deliveries with a male fetus revealed that these cells are of maternal origin. Flow cytometry and immunocytochemistry confirmed the mesenchymal stem cell phenotype. Proliferation rates of PD-MSCs remained constantly high up to passage 20. These cells could be differentiated toward mesodermal lineage in vitro up to passage 20. Nonconfluent culture was critical to maintain the MSC stemness during long-term culture. CONCLUSION: Term placenta constitutes a rich, very reliable source of maternal mesenchymal stem cells that remain differentiable, even at high passage numbers.

OBJECTIVE: This study was undertaken to isolate and characterize multipotent mesenchymal stem cells from term human placenta (placenta-derived mesenchymal stem cells, PD-MSCs). STUDY DESIGN: Sequential enzymatic digestion was used to isolate PD-MSCs in which trypsin removes the trophoblast layer, followed by collagenase treatment of remaining placental tissue. Karyotype, phenotype, growth kinetics, and differentiability of PD-MSC isolates from collagenase digests were analyzed. RESULTS: PD-MSC isolation was successful in 14 of 17 cases. Karyotyping of PD-MSC isolates from deliveries with a male fetus revealed that these cells are of maternal origin. Flow cytometry and immunocytochemistry confirmed the mesenchymal stem cell phenotype. Proliferation rates of PD-MSCs remained constantly high up to passage 20. These cells could be differentiated toward mesodermal lineage in vitro up to passage 20. Nonconfluent culture was critical to maintain the MSC stemness during long-term culture. CONCLUSION: Term placenta constitutes a rich, very reliable source of maternal mesenchymal stem cells that remain differentiable, even at high passage numbers.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Medical Genetics
04 Faculty of Medicine > University Hospital Zurich > Clinic for Obstetrics
04 Faculty of Medicine > University Hospital Zurich > Division of Surgical Research
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2010
Deposited On:24 Feb 2010 09:23
Last Modified:05 Apr 2016 13:53
Publisher:Elsevier
ISSN:0002-9378
Publisher DOI:10.1016/j.ajog.2009.10.869
PubMed ID:20035913
Permanent URL: http://doi.org/10.5167/uzh-29911

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