Elevated Levels of Autoantibodies Against DNAJC2 in Sera of Patients with Atherosclerotic Diseases
Overview
Authors
Affiliations
Background: Serum antibody markers have been increasingly identified not only for cancer and autoimmune diseases but also for atherosclerosis-related diseases such as acute ischemic stroke (AIS), acute myocardial infarction (AMI), diabetes mellitus (DM), and chronic kidney disease (CKD). Biomarkers for transient ischemic attack (TIA) and non-ST segment elevation acute coronary syndrome (NSTEACS) are potentially useful for detection of early phase of atherosclerotic changes against AIS and AMI, respectively.
Methods: We utilized serological identification of antigens by recombinant cDNA expression cloning (SEREX) using a human aortic endothelial cell cDNA phage library and sera from patients with TIA or NSTEACS. Serum antibody levels were measured by amplified luminescent proximity homogeneous assay-linked immunosorbent assay (AlphaLISA) using purified recombinant antigens.
Results: Screening of sera from patients with TIA identified DnaJ heat shock protein family (Hsp40) member C2 (DNAJC2) as a candidate antigen, which was also isolated by SEREX screening using sera of patients with NSTEACS. The validation cohort revealed significantly higher DNAJC2 antibody (DNAJC2-Ab) levels in the sera of patients with TIA or AIS than those in healthy donors (HDs). Multivariate logistic regression analysis indicated that the predictive odds ratios (OR) of DNAJC2-Ab levels for TIA and AIS were 2.54 (95% confidence interval [CI]: 1.36-4.74, = 0.0034) and 2.14 (95% CI: 1.39-3.30, = 0.0005), respectively. Serum DNAJC2-Ab levels were also higher in patients with AMI, DM, and CKD than those in HDs.
Conclusion: Serum DNAJC2-Ab level may be useful for early detection of atherosclerotic lesions, which lead to AIS and AMI.
Hiwasa T, Yoshida Y, Kubota M, Li S, Zhang B, Matsutani T Med Int (Lond). 2024; 4(5):45.
PMID: 38983794 PMC: 11228693. DOI: 10.3892/mi.2024.169.
Serum anti-PCK1 antibody levels are a prognostic factor for patients with diabetes mellitus.
Namiki T, Takemoto M, Hayashi A, Yamagata H, Ishikawa T, Yokote K BMC Endocr Disord. 2023; 23(1):239.
PMID: 37904164 PMC: 10614393. DOI: 10.1186/s12902-023-01491-3.
Arasawa T, Hiwasa T, Kagaya A, Maruyama T, Uesato M, Kano M BMC Cancer. 2023; 23(1):356.
PMID: 37072777 PMC: 10111810. DOI: 10.1186/s12885-023-10845-y.
Yamagata H, Hayashi A, Yoshida Y, Koshizaka M, Onishi S, Yoshida T Sci Rep. 2023; 13(1):5391.
PMID: 37012310 PMC: 10070486. DOI: 10.1038/s41598-023-32644-y.
Li S, Yoshida Y, Kubota M, Zhang B, Matsutani T, Ito M Front Cardiovasc Med. 2023; 10:1042272.
PMID: 36844744 PMC: 9954151. DOI: 10.3389/fcvm.2023.1042272.