Variability of serum novel serum peptide biomarkers correlates with the disease states of multiple myeloma

Clinical Proteomics

Lei Zhang¹  Ju Bai²  Aili He²  Fangxia Wang²  Yun Yang²  Jianli Wang² 

[1] Department of Clinical Lab, Second Affiliated Hospital, Xi’an Jiaotong University;Department of Hematology, Second Affiliated Hospital, Medical School of Xi’an Jiaotong University;

关键词: Biomarkers;    Proteomic profiling;    Bone marrow microenvironment;    Treatment response;    Multiple myeloma;   

DOI  :  10.1186/s12014-019-9238-0

来源: DOAJ

【 摘 要 】

Abstract Background The bone marrow microenvironment provides an optimal substrate for multiple myeloma (MM) initiation and progression. The soluble component of MM niche is dynamic with the disease states of MM. We formerly employed proteomic profiling to construct a MM model. Four peptides constituting the model were selected by supervised neural network algorithm (SNN). Methods 62 Newly diagnosed (ND) MM and 64 healthy controls (HCs) were picked up for validating the distinguishing capability of the SNN model. Nano-liquid chromatography-electrospray ionization-tandem mass spectrometry was used for peptide identification. MM in different disease states and HCs were choosed for peptides relative intensities comparison. Western blot and ELISA were employed to validate the variability. Results The sensitivity and specificity of the independent testing data set for blind validation were 93.55% and 92.19%. The relative intensities of three out of the four peptides were increased in ND and refractory and relapse patients but decreased to that level of HCs in complete remission and very good partial remission patients. Relative intensity of the remaining peptide was negatively associated with MM remission. The peptides sequencing results showed that they were derived from dihydropyrimidinase-like 2, fibrinogen alpha chain, platelet factor 4 and alpha-fetoprotein. Conclusions The potential value of the four peptides in monitoring MM treatment response was arised from their close correlation with MM disease states.

【 授权许可】

Unknown