PMID- 24405888 OWN - NLM STAT- MEDLINE DCOM- 20140911 LR - 20220321 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 4 IP - 5 DP - 2013 Oct 2 TI - Human umbilical cord mesenchymal stromal cells exhibit immature nucleus pulposus cell phenotype in a laminin-rich pseudo-three-dimensional culture system. PG - 120 LID - 10.1186/scrt331 [doi] AB - INTRODUCTION: Cell supplementation to the herniated or degenerated intervertebral disc (IVD) is a potential strategy to promote tissue regeneration and slow disc pathology. Human umbilical cord mesenchymal stromal cells (HUCMSCs) - originating from the Wharton's jelly - remain an attractive candidate for such endeavors with their ability to differentiate into multiple lineages. Previously, mesenchymal stem cells (MSCs) have been studied as a potential source for disc tissue regeneration. However, no studies have demonstrated that MSCs can regenerate matrix with unique characteristics matching that of immature nucleus pulposus (NP) tissues of the IVD. In our prior work, immature NP cells were found to express specific laminin isoforms and laminin-binding receptors that may serve as phenotypic markers for evaluating MSC differentiation to NP-like cells. The goal of this study is to evaluate these markers and matrix synthesis for HUCMSCs cultured in a laminin-rich pseudo-three-dimensional culture system. METHODS: HUCMSCs were seeded on top of Transwell inserts pre-coated with Matrigel, which contained mainly laminin-111. Cells were cultured under hypoxia environment with three differentiation conditions: NP differentiation media (containing 2.5% Matrigel solution to provide for a pseudo-three-dimensional laminin culture system) with no serum, or the same media supplemented with either insulin-like growth factor-1 (IGF-1) or transforming growth factor-beta1 (TGF-beta1). Cell clustering behavior, matrix production and the expression of NP-specific laminin and laminin-receptors were evaluated at days 1, 7, 13 and 21 of culture. RESULTS: Data show that a pseudo-three-dimensional culture condition (laminin-1 rich) promoted HUCMSC differentiation under no serum conditions. Starting at day 1, HUCMSCs demonstrated a cell clustering morphology similar to that of immature NP cells in situ and that observed for primary immature NP cells within the similar laminin-rich culture system (prior study). Differentiated HUCMSCs under all conditions were found to contain glycosaminoglycan, expressed extracellular matrix proteins of collagen II and laminin alpha5, and laminin receptors (integrin alpha3 and beta4 subunits). However, neither growth factor treatment generated distinct differences in NP-like phenotype for HUCMSC as compared with no-serum conditions. CONCLUSIONS: HUCMSCs have the potential to differentiate into cells sharing features with immature NP cells in a laminin-rich culture environment and may be useful for IVD cellular therapy. FAU - Chon, Brian H AU - Chon BH FAU - Lee, Esther J AU - Lee EJ FAU - Jing, Liufang AU - Jing L FAU - Setton, Lori A AU - Setton LA FAU - Chen, Jun AU - Chen J LA - eng GR - R01AR057410/AR/NIAMS NIH HHS/United States GR - R01AR047442/AR/NIAMS NIH HHS/United States GR - R01 AR057410/AR/NIAMS NIH HHS/United States GR - R01 EB002263/EB/NIBIB NIH HHS/United States GR - R01EB002263/EB/NIBIB NIH HHS/United States GR - R01 AR047442/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20131002 PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 0 (Collagen Type II) RN - 0 (Glycosaminoglycans) RN - 0 (Integrin alpha3) RN - 0 (Integrin beta4) RN - 0 (Laminin) RN - 0 (Transforming Growth Factor beta1) RN - 0 (laminin alpha5) RN - 67763-96-6 (Insulin-Like Growth Factor I) SB - IM CIN - Stem Cell Res Ther. 2013;4(6):142. PMID: 24456755 MH - Cell Culture Techniques MH - Cell Differentiation/drug effects MH - Cell Hypoxia MH - Cells, Cultured MH - Cluster Analysis MH - Collagen Type II/metabolism MH - Extracellular Matrix/metabolism MH - Gene Expression/drug effects MH - Glycosaminoglycans/metabolism MH - Humans MH - Insulin-Like Growth Factor I/pharmacology MH - Integrin alpha3/genetics/metabolism MH - Integrin beta4/genetics/metabolism MH - Intervertebral Disc/cytology/metabolism MH - Laminin/genetics/metabolism MH - Mesenchymal Stem Cells/*cytology MH - Phenotype MH - Time Factors MH - Transforming Growth Factor beta1/pharmacology MH - Umbilical Cord/*cytology PMC - PMC3854685 EDAT- 2014/01/11 06:00 MHDA- 2014/09/12 06:00 PMCR- 2013/10/02 CRDT- 2014/01/11 06:00 PHST- 2013/03/28 00:00 [received] PHST- 2013/09/25 00:00 [accepted] PHST- 2014/01/11 06:00 [entrez] PHST- 2014/01/11 06:00 [pubmed] PHST- 2014/09/12 06:00 [medline] PHST- 2013/10/02 00:00 [pmc-release] AID - scrt331 [pii] AID - 10.1186/scrt331 [doi] PST - epublish SO - Stem Cell Res Ther. 2013 Oct 2;4(5):120. doi: 10.1186/scrt331.