RT Journal Article
T1 RGD-Dendrimer-Poly(L-lactic) Acid Nanopatterned Substrates for the Early Chondrogenesis of Human Mesenchymal Stromal Cells Derived from Osteoarthritic and Healthy Donors.
A1 Rodríguez-Pereira, Cristina
A1 Lagunas, Anna
A1 Casanellas, Ignasi
A1 Vida, Yolanda
A1 Pérez-Inestrosa, Ezequiel
A1 Andrades, José A
A1 Becerra, José
A1 Samitier, Josep
A1 Blanco, Francisco J
A1 Magalhães, Joana
K1 RGD-density
K1 cell condensation
K1 chondrogenic differentiation
K1 gap junctions
K1 osteoarthritis
AB Aiming to address a stable chondrogenesis derived from mesenchymal stromal cells (MSCs) to be applied in cartilage repair strategies at the onset of osteoarthritis (OA), we analyzed the effect of arginine-glycine-aspartate (RGD) density on cell condensation that occurs during the initial phase of chondrogenesis. For this, we seeded MSC-derived from OA and healthy (H) donors in RGD-dendrimer-poly(L-lactic) acid (PLLA) nanopatterned substrates (RGD concentrations of 4 × 10-9, 10-8, 2.5 × 10-8, and 10-2 w/w), during three days and compared to a cell pellet conventional three-dimensional culture system. Molecular gene expression (collagens type-I and II-COL1A1 and COL2A1, tenascin-TNC, sex determining region Y-box9-SOX9, and gap junction protein alpha 1-GJA1) was determined as well as the cell aggregates and pellet size, collagen type-II and connexin 43 proteins synthesis. This study showed that RGD-tailored first generation dendrimer (RGD-Cys-D1) PLLA nanopatterned substrates supported the formation of pre-chondrogenic condensates from OA- and H-derived human bone marrow-MSCs with enhanced chondrogenesis regarding the cell pellet conventional system (presence of collagen type-II and connexin 43, both at the gene and protein level). A RGD-density dependent trend was observed for aggregates size, in concordance with previous studies. Moreover, the nanopatterns' had a higher effect on OA-derived MSC morphology, leading to the formation of bigger and more compact aggregates with improved expression of early chondrogenic markers.
SN 1996-1944
YR 2020
FD 2020-05-13
LK https://hdl.handle.net/10668/26197
UL https://hdl.handle.net/10668/26197
LA en
DS RISalud
RD Apr 8, 2025