{"title":"Emerging trends in chemoproteomics: Mapping the landscape of protein–metabolite interactions","authors":"Ning Wan , Chenguang Liu , Haiping Hao , Hui Ye","doi":"10.1016/j.cbpa.2025.102631","DOIUrl":"10.1016/j.cbpa.2025.102631","url":null,"abstract":"<div><div>Protein-metabolite interactions (PMIs) are fundamental regulators of cellular metabolism, influencing essential processes such as energy homeostasis, signal transduction, and gene expression. However, their transient and dynamic nature presents significant challenges for detection. Chemoproteomics has emerged as a powerful and versatile strategy for capturing and characterizing PMIs with proteome-wide resolution. These approaches can be broadly categorized into derivatization-based methods, which utilize chemically modified probes to enrich protein targets, and derivatization-free methods, which detect changes in protein physicochemical properties upon metabolite binding, aided by highly sensitive proteomic analysis. In this review, we discuss recent advancements in both strategies, highlighting their applications in mapping PMIs and their potential to deepen our understanding of cellular metabolism and disease mechanisms.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"89 ","pages":"Article 102631"},"PeriodicalIF":6.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"In vivo cross-linking mass spectrometry: Advances and challenges in decoding protein conformational dynamics and complex regulatory networks in living cells","authors":"Jing Chen , Qun Zhao , Yukui Zhang , Lihua Zhang","doi":"10.1016/j.cbpa.2025.102630","DOIUrl":"10.1016/j.cbpa.2025.102630","url":null,"abstract":"<div><div><em>In vivo</em> chemical cross-linking mass spectrometry (XL-MS) has emerged as a powerful technique for high-throughput, proteome-wide mapping of intramolecular conformations and intermolecular interactions of protein complexes in living cells. By providing distance constraints between specific residues, XL-MS enables the characterization of protein conformations and interaction networks under near-physiological conditions, greatly facilitating the analysis of biomacromolecular functions and regulatory mechanisms. The information obtained from cross-linking is particularly valuable at the systems level, and its value continues to increase with improvements in the density of cross-link identification, the precision of distance constraints, and the spatiotemporal resolution. In recent years, advances in cross-linker design, cross-linked peptide enrichment methods, mass spectrometry analysis, and artificial intelligence-assisted data analysis have significantly expanded the capabilities of <em>in vivo</em> XL-MS. This article systematically reviews the latest progress in <em>in vivo</em> XL-MS for protein conformation and interaction network analysis, highlights its unique advantages, discusses current technical challenges, and explores further development.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"88 ","pages":"Article 102630"},"PeriodicalIF":6.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evolving advances of proximity labeling in capturing biomolecular interactions","authors":"Ting Dang , Wenqing Shui","doi":"10.1016/j.cbpa.2025.102629","DOIUrl":"10.1016/j.cbpa.2025.102629","url":null,"abstract":"<div><div>Proximity labeling (PL), with its capability to resolve spatiotemporal dynamics of biomolecular interactions, has become a pivotal technology for interrogating protein–protein interaction networks, subcellular proteomics, and intercellular communication. This review focuses on the breakthrough developments in PL from 2023 to 2025, highlighting three major frontiers: (1) catalytic system innovation, including the development of new enzymes, cascade reactions, and environment-responsive labeling systems, which collectively lead to increased spatiotemporal resolution and enhanced <em>in vivo</em> applicability; (2) new strategies to address endogenous targets, facilitating interactome mapping in native tissues and live animals; and (3) determination of the labeling radius for different PL tools using super-resolution imaging or DNA nanostructures. We also briefly discuss the desired innovation in the next-generation PL research.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"88 ","pages":"Article 102629"},"PeriodicalIF":6.1,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wensi Zhao , Jun Zhang , Kaifeng Chen , Jian Yuan , Linhui Zhai , Minjia Tan
{"title":"Mass spectrometry-based characterization of histone post-translational modification","authors":"Wensi Zhao , Jun Zhang , Kaifeng Chen , Jian Yuan , Linhui Zhai , Minjia Tan","doi":"10.1016/j.cbpa.2025.102622","DOIUrl":"10.1016/j.cbpa.2025.102622","url":null,"abstract":"<div><div>Histone post-translational modifications (PTMs) play critical roles in regulating chromatin dynamics and gene expression. Increasing evidence demonstrates that the dysregulation of histone PTMs is closely associated with the pathogenesis of various diseases. Traditional methods for detecting histone PTMs, such as western blot (WB) and chromatin immunoprecipitation sequencing (ChIP-seq), are often limited by their dependence on specific antibodies and relatively low analytical throughput. Mass spectrometry (MS)-based proteomics offers a powerful and unbiased approach for comprehensive characterization of histone PTMs. This review focuses on the advanced development of MS-based strategies for characterizing histone PTMs. These strategies include histone extraction, enzymatic digestion, labeling, enrichment, and MS-based detection. These techniques not only enable comprehensive identification and quantitative analysis of classical modifications, such as acetylation and methylation, but also substantially facilitate the discovery of less-characterized histone PTMs, including succinylation, lactylation, crotonylation, and monoaminylation. Consequently, these findings significantly enhance the complexity of histone code. Collectively, MS-based approaches have profoundly advanced our understanding of histone PTM landscapes and their potential epigenetic regulatory mechanisms in both physiology and pathology contexts.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"88 ","pages":"Article 102622"},"PeriodicalIF":6.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144697031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Creating and understanding new-to-nature chemistry","authors":"Sonja Billerbeck, Virginia W. Cornish","doi":"10.1016/j.cbpa.2025.102621","DOIUrl":"10.1016/j.cbpa.2025.102621","url":null,"abstract":"","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"87 ","pages":"Article 102621"},"PeriodicalIF":6.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent advances in proximity labeling for chemical proteomics: Paving the way for in vivo applications","authors":"Fátima Yuri Tanimura Valor, Tomonori Tamura, Itaru Hamachi","doi":"10.1016/j.cbpa.2025.102620","DOIUrl":"10.1016/j.cbpa.2025.102620","url":null,"abstract":"<div><div>The integration of proximity labeling (PL) and advanced mass spectrometry-based proteomics is a robust framework for mapping protein–protein interaction (PPI) networks and local protein inventories in the crowded multimolecular environment of live cells. Over the last decade, numerous PL technologies such as biotin identification (BioID), ascorbate peroxidase (APEX) etc. using engineered enzymes or synthetic photocatalysts have been developed and successfully used in cell-based experiments. However, the application of such technologies beyond cultured cells, (i.e. in more complicated tissues or <em>in vivo</em>) remains challenging. In this review, we summarize the current issues in applying PL methods <em>in vivo</em> and highlight recent studies that could provide breakthroughs to overcome the existing limitations and expand the application of PL to tissues and <em>in vivo</em>.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"87 ","pages":"Article 102620"},"PeriodicalIF":6.9,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144548597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Editorial overview: Glycobiology (2024)","authors":"Mia L. Huang, Peng Wu","doi":"10.1016/j.cbpa.2025.102619","DOIUrl":"10.1016/j.cbpa.2025.102619","url":null,"abstract":"","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"87 ","pages":"Article 102619"},"PeriodicalIF":6.9,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Editorial overview: Editorial of molecular imaging","authors":"Jefferson Chan, Martin J. Schnermann","doi":"10.1016/j.cbpa.2025.102618","DOIUrl":"10.1016/j.cbpa.2025.102618","url":null,"abstract":"","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"87 ","pages":"Article 102618"},"PeriodicalIF":6.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chemical synthesis and biological functions of carbohydrates","authors":"You Yang, Biao Yu","doi":"10.1016/j.cbpa.2025.102617","DOIUrl":"10.1016/j.cbpa.2025.102617","url":null,"abstract":"","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"87 ","pages":"Article 102617"},"PeriodicalIF":6.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}