Comparative analysis of cytokines and growth factors in the conditioned media of stem cells from the pulp of deciduous, young, and old permanent tooth.

Saudi Journal of Biological Sciences
Shilpa BhandiShankargouda Patil

Abstract

To compare and analyze the secretome profile of stem cells obtained from the deciduous tooth (SHEDs), young (yDPSCs), and old permanent tooth (oDPSCs). All the stem cells were assessed for mesenchymal stem cell markers. The stem cells were differentiated into osteoblasts and chondrocytes using lineage-specific differentiation media. Conditioned media was collected from growing stem cells, and a cytometric bead array was performed to estimate secreted cytokines and growth factor levels by flow cytometry. Gene expresseion levels were assessed by real-time quantitative polymerase chain reaction. Age did not affect the mesenchymal characteristics of dental stem cells from various age groups. The secretomes of SHEDs and young yDPSCs exhibit more growth factors and lesser pro-inflammatory cytokines than oDPSCs. Osteo and chondrogenic differentiation potential were higher in SHEDs and young yDPSCs than in the oDPSCs. TLR1, TLR2, TLR3 show decreased expression levels with age and TLR5, TLR6 show increased expression with age. The superior regenerative potential of SHEDs and yDPSCs may be due to the higher growth factors and lower pro-inflammatory cytokine profile.

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