Identification of Novel Biomarkers for Pre-diabetic Diagnosis Using a Combinational Approach
Journal
Frontiers in Endocrinology
Journal Volume
12
Date Issued
2021
Author(s)
Yang M.-T.
Chang W.-H.
Kuo T.-F.
Shen M.-Y.
Yang C.-W.
Tien Y.-J.
Lai B.-Y.
Chen Y.-R.
Yang W.-C.
Abstract
Reliable protein markers for pre-diabetes in humans are not clinically available. In order to identify novel and reliable protein markers for pre-diabetes in humans, healthy volunteers and patients diagnosed with pre-diabetes and stroke were recruited for blood collection. Blood samples were collected from healthy and pre-diabetic subjects 12?h after fasting. BMI was calculated from body weight and height. Fasting blood glucose (FBG), glycated hemoglobin (HbA1C), triglyceride (TG), total cholesterol, high-density lipoprotein, low-density lipoprotein (LDL), insulin and albumin were assayed by automated clinical laboratory methods. We used a quantitative proteomics approach to identify 1074 proteins from the sera of pre-diabetic and healthy subjects. Among them, 500 proteins were then selected using Mascot analysis scores. Further, 70 out of 500 proteins were selected via volcano plot analysis according to their statistical significance and average relative protein ratio. Eventually, 7 serum proteins were singled out as candidate markers for pre-diabetes due to their diabetic relevance and statistical significance. Immunoblotting data demonstrated that laminin subunit alpha 2 (LAMA2), mixed-lineage leukemia 4 (MLL4), and plexin domain containing 2 (PLXDC2) were expressed in pre-diabetic patients but not healthy volunteers. Receiver operating characteristic curve analysis indicated that the combination of the three proteins has greater diagnostic efficacy than any individual protein. Thus, LAMA2, MLL4 and PLXDC2 are novel and reliable serum protein markers for pre-diabetic diagnosis in humans. ? Copyright ? 2021 Yang, Chang, Kuo, Shen, Yang, Tien, Lai, Chen, Chang and Yang.
Subjects
diagnosis; marker; proteomics; serum protein; type 2 diabetes
SDGs
Other Subjects
biological marker; CD14 antigen; CD99 antigen; clusterin; laminin alpha2; plexin; Article; controlled study; diagnostic test accuracy study; enzyme linked immunosorbent assay; female; human; human cell; immunoblotting; impaired glucose tolerance; iTRAQ labeling; liquid chromatography-mass spectrometry; male; MLL4 gene; mouse; nonhuman; Plexin Domain Containing 2 gene; sensitivity and specificity; Serum Amyloid A2 gene
Publisher
Frontiers Media S.A.
Type
journal article