Isolation, Expansion, and Characterization of Placenta Originated Decidua Basalis -Derived Mesenchymal Stromal Cells.

Mesenchymal stromal cells (MSCs) were isolated from Decidua Basalis (DB) and studied for their final cellular product measures, such as safety, purity, quality, quantity, and integrity that are ascribed as cellular products. This research aimed to isolate MSCs for expansion under the clinical scale level with potency, secretion of cytokines, growth factors secreted by DB-MSCs, and their role in wound healing. Placentas isolated from DB were expanded up to the 10th passage, and their characteristics were assessed by phenotypic characterization using a flow cytometer and analyzed for trilineage differentiation by cytochemical staining. Growth factors (GF), interleukins (IL), chemokines, and tissue inhibitors of metalloproteinases (TIMP) were measured with enzyme-linked immunosorbent assays. The harvested cells from the placenta yield 1.63-2.45 × 10 4 cells/cm 2 at P(0), 3.66-5.31 × 10 4 cells/cm 2 at P(1), 4.01-5.47 × 10 4 cells/cm 2 at P(2), and 3.94-5.60 × 10 4 cells/cm 2 at P(10) accordingly; up to 4.74 × 10 9 P(2) DB-MSCs were harvested within 9-11 days. The viability of the freshly harvested cells was greater than 90% in all cases. It is able to differentiate into chondrocytes, adipocytes, and osteogenic cells, proving their ability to differentiate into a trilineage. Thus, this study put an insight into a secure and conventional approach toward their ability to differentiate into multiple lineages and secrete factors related to immune regulation, making DB-MSCs a potential source in various therapeutic applications.