Clinical Proteomics: Fourth Edition

A special issue of Proteomes (ISSN 2227-7382).

Deadline for manuscript submissions: 30 May 2025 | Viewed by 399

Special Issue Editor


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Guest Editor
School of Biomedical Sciences, University of Plymouth, Plymouth PL4 8AA, UK
Interests: proteomics; mass spectrometry; signaling pathways; cancer; phosphorylation
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Special Issue Information

Dear Colleagues,

Computational and technological advances have ushered in a new era in the field of proteomics, leading to the analysis of large numbers of samples in record time. There has also been a remarkable shift in protein quantification approaches, led primarily by the development of label-free quantification methods using either DDA- or DIA-based approaches. This is further complemented by the now-popular use of chemical labeling techniques, such as TMT, and/or targeted quantification techniques, such as MRM/SRM and, most importantly, PRM. These developments offer unprecedented opportunities to discover novel biomarker signatures and to systematically study disease mechanisms. Targeted high-resolution quantification technologies such as PRM allow for biomarker validation studies from the same or independent cohort of patients, as well as the analysis of a range of samples, from body fluids to human tissue biopsies. Despite these technological advances, there are considerable challenges to be overcome, such as (1) the robust pipelines needed for the analysis of body fluids such as serum, considering the large dynamic range and need for depletion strategies, (2) the reproducibility of DIA-based approaches for the analysis of thousands of clinical samples, and new MS sample preparation and acquisition methods.

For this Special Issue, we look forward to receiving original clinical proteomics studies and review articles focused on (1) the underlying mechanisms of disease progression using human tissues or representative cell lines, (2) biomarker discovery studies using quantitative proteomics, and (3) mass spectrometry-based biomarker validation studies, as well as (4) the use of proteomics to discover modes of action of new and existing drugs.

Dr. Vikram Sharma
Guest Editor

Manuscript Submission Information

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Keywords

  • clinical proteomics
  • disease mechanisms
  • biomarker discovery
  • biomarker validation

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Published Papers (1 paper)

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Research

21 pages, 3652 KiB  
Article
Differential Signaling Pathways Identified in Aqueous Humor, Anterior Capsule, and Crystalline Lens of Age-Related, Diabetic, and Post-Vitrectomy Cataract
by Christina Karakosta, Martina Samiotaki, Anastasios Bisoukis, Konstantinos I. Bougioukas, George Panayotou, Dimitrios Papaconstantinou and Marilita M. Moschos
Proteomes 2025, 13(1), 7; https://doi.org/10.3390/proteomes13010007 (registering DOI) - 3 Feb 2025
Abstract
Background: The purpose of this study was to detect proteomic alterations and corresponding signaling pathways involved in the formation of age-related cataract (ARC), diabetic cataract (DC), and post-vitrectomy cataract (PVC). Methods: Three sample types, the aqueous humor (AH), the anterior capsule [...] Read more.
Background: The purpose of this study was to detect proteomic alterations and corresponding signaling pathways involved in the formation of age-related cataract (ARC), diabetic cataract (DC), and post-vitrectomy cataract (PVC). Methods: Three sample types, the aqueous humor (AH), the anterior capsule (AC), and the content of the phaco cassette, were collected during phacoemulsification surgery. The samples were obtained from 12 participants without diabetes mellitus (DM), 11 participants with DM, and 7 participants without DM, with a history of vitrectomy surgery in the past 12 months. The Sp3 protocol (Single-Pot, Solid-Phase, Sample-Preparation) was used for the sample preparation. The recognition and quantification of proteins were carried out with liquid chromatography online with tandem mass spectrometry. The DIA-NN software was applied for the identification and quantification of peptides/proteins. Statistical analysis and data visualization were conducted on Perseus software. Data are available via ProteomeXchange. Results: A very rich atlas of the lens and AH proteome has been generated. Glycosaminoglycan biosynthesis and the non-canonical Wnt receptor signaling pathway were differentially expressed in ARC compared to both the DC and PVC groups. In the PVC group, complement activation was differentially expressed in AH samples, while glutathione metabolism and oxidoreductase activity were differentially expressed in AC samples. Microfilament motor activity, microtubule cytoskeleton organization, and microtubule binding were differentially expressed in the DC and PVC groups in both AH and AC samples. Conclusions: The results of this study expand the existing knowledge on pathways involved in the pathophysiology of cataract, and suggest possible important druggable targets for slower progression or even prevention of cataract. Full article
(This article belongs to the Special Issue Clinical Proteomics: Fourth Edition)
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