6533b872fe1ef96bd12d4232

RESEARCH PRODUCT

Proteomic Profiling of Secreted Proteins for the Hematopoietic Support of Interleukin-Stimulated Human Umbilical Vein Endothelial Cells

Gürkan BalSucharit BhakdiMuhammad Al-sammanOliver KleinSundrela Kamhieh-milzJulian Kamhieh-milzAbdulgabar SalamaJanusz DebskiViktor Sterzer

subject

ProteomicsSpectrometry Mass Electrospray IonizationInterleukin-1betaBiomedical EngineeringComplement C5blcsh:MedicineAntigens CD34BiologyComplement factor BUmbilical veinProinflammatory cytokineHuman Umbilical Vein Endothelial CellsHumansProgenitor cellCell ProliferationTransplantationInterleukin-6lcsh:RAntibodies MonoclonalComputational BiologyInterleukinComplement System ProteinsCell BiologyFlow CytometryHematopoietic Stem CellsMolecular biologyUp-RegulationComplement systemHaematopoiesisElectrophoresis Polyacrylamide GelInterleukin-3Stem cellPeptides

description

Human umbilical cord vein endothelial cells (HUVECs) secrete a number of factors that greatly impact the proliferation and differentiation of hematopoietic stem and progenitor cells (HSPCs). These factors remain largely unknown. Here, we report on the most comprehensive proteomic profiling of the HUVEC secretome and identified 827 different secreted proteins. Two hundred and thirty-one proteins were found in all conditions, whereas 369 proteins were identified only under proinflammatory conditions following IL-1β, IL-3, and IL-6 stimulation. Thirteen proteins including complement factor b (CFb) were identified only under IL-1β and IL-3 conditions and may potentially represent HSPC proliferation factors. The combination of bioinformatics and gene ontology annotations indicates the role of the complement system and its activation. Furthermore, CFb was found to be transcriptionally strongly upregulated. Addition of complement component 5b-9 (C5b-9) monoclonal antibody to the stem cell expansion assay was capable of significantly reducing their proliferation. This study suggests a complement-mediated cross-talk between endothelial cells and HSPCs under proinflammatory conditions.

yearjournalcountryeditionlanguage
2013-07-01Cell Transplantation
10.3727/096368912x657288https://doaj.org/article/e9930499899b453498f345f7cb127484