The Effect of Platelet-Rich Plasma on Morphogenesis and Expression of Chondrogenic Marker Genes by Chondrocyte-Like Cells of the Rat Nucleus Pulposus in Vitro

摘要

The aim of the study was to investigate the effect of 3, 10, and 20% of platelet-rich rat plasma (PRP) on the morphological characteristics of chondrocyte-like cells of the rat nucleus pulposus (NP) and the expression of chondrogenic genes ACAN, COLII, GPC3, MGP, PTN, ANXA3, and VIM in vitro. A dose-dependent increase of NP cell viability was observed in cultures supplemented with 3, 10, and 20% PRP. Platelets showed tropicity to blast-like cells in culture and formed adhesion zones. Differentiation of blast-like cells was observed and dividing cells were identified on day 14 of cultivation with 20% PRP. PRP prevented the decrease of chondrogenic gene expression in a dose-dependent manner, with 20% PRP being the most efficient. Expression of the majority of chondrogenic genes studied was observed in these cultures: the expression of COLII increased 2.9 times (P = 0.002); that of VIM, 2.1 times (P = 0.0003); that of ANXA3, 2.3times (P = 0.0003); that of GPC3, 1.4 times (P = 0.0011); that of PTN, 1.6 times (P = 0.0017); and that of ACAN, 1.2 times (P = 0.0606).