The effect of the bioactive sphingolipids S1P and C1P on multipotent stromal cells--new opportunities in regenerative medicine

Cell Mol Biol Lett. 2015 Sep;20(3):510-33. doi: 10.1515/cmble-2015-0029.

Abstract

Sphingosine-1-phosphate (S1P) and ceramide-1-phosphate (C1P) belong to a family of bioactive sphingolipids that act as important extracellular signaling molecules and chemoattractants. This study investigated the influence of S1P and C1P on the morphology, proliferation activity and osteogenic properties of rat multipotent stromal cells derived from bone marrow (BMSCs) and subcutaneous adipose tissue (ASCs). We show that S1P and C1P can influence mesenchymal stem cells (MSCs), each in a different manner. S1P stimulation promoted the formation of cellular aggregates of BMSCs and ASCs, while C1P had an effect on the regular growth pattern and expanded intercellular connections, thereby increasing the proliferative activity. Although osteogenic differentiation of MSCs was enhanced by the addition of S1P, the effectiveness of osteoblast differentiation was more evident in BMSCs, particularly when biochemical and molecular marker levels were considered. The results of the functional osteogenic differentiation assay, which includes an evaluation of the efficiency of extracellular matrix mineralization (SEM-EDX), revealed the formation of numerous mineral aggregates in BMSC cultures stimulated with S1P. Our data demonstrated that in an appropriate combination, the bioactive sphingolipids S1P and C1P may find wide application in regenerative medicine, particularly in bone regeneration with the use of MSCs.

MeSH terms

  • Adipose Tissue / cytology
  • Alkaline Phosphatase / genetics
  • Alkaline Phosphatase / metabolism
  • Animals
  • Cell Differentiation / drug effects
  • Cell Differentiation / genetics
  • Cell Proliferation / drug effects
  • Cell Proliferation / genetics
  • Cells, Cultured
  • Ceramides / pharmacology*
  • Gene Expression / drug effects
  • Lysophospholipids / pharmacology*
  • Mesenchymal Stem Cells / cytology
  • Mesenchymal Stem Cells / drug effects
  • Mesenchymal Stem Cells / ultrastructure
  • Microscopy, Electron, Scanning
  • Microscopy, Fluorescence
  • Multipotent Stem Cells / cytology
  • Multipotent Stem Cells / drug effects*
  • Multipotent Stem Cells / ultrastructure
  • Osteocalcin / genetics
  • Osteocalcin / metabolism
  • Osteogenesis / drug effects
  • Osteogenesis / genetics
  • Osteopontin / genetics
  • Osteopontin / metabolism
  • Rats, Wistar
  • Regenerative Medicine / methods*
  • Regenerative Medicine / trends
  • Reverse Transcriptase Polymerase Chain Reaction
  • Sphingosine / analogs & derivatives*
  • Sphingosine / pharmacology
  • Stromal Cells / cytology
  • Stromal Cells / drug effects*
  • Stromal Cells / ultrastructure

Substances

  • Ceramides
  • Lysophospholipids
  • ceramide 1-phosphate
  • Osteocalcin
  • Osteopontin
  • sphingosine 1-phosphate
  • Alkaline Phosphatase
  • Sphingosine