Peter Kjer-Hansen, Tri Giang Phan, Robert J. Weatheritt
{"title":"Protein isoform-centric therapeutics: expanding targets and increasing specificity","authors":"Peter Kjer-Hansen, Tri Giang Phan, Robert J. Weatheritt","doi":"10.1038/s41573-024-01025-z","DOIUrl":"10.1038/s41573-024-01025-z","url":null,"abstract":"Most protein-coding genes produce multiple protein isoforms; however, these isoforms are commonly neglected in drug discovery. The expression of protein isoforms can be specific to a disease, tissue and/or developmental stage, and this specific expression can be harnessed to achieve greater drug specificity than pan-targeting of all gene products and to enable improved treatments for diseases caused by aberrant protein isoform production. In recent years, several protein isoform-centric therapeutics have been developed. Here, we collate these studies and clinical trials to highlight three distinct but overlapping modes of action for protein isoform-centric drugs: isoform switching, isoform introduction or depletion, and modulation of isoform activity. In addition, we discuss how protein isoforms can be used clinically as targets for cell type-specific drug delivery and immunotherapy, diagnostic biomarkers and sources of cancer neoantigens. Collectively, we emphasize the value of a focus on isoforms as a route to discovering drugs with greater specificity and fewer adverse effects. This approach could enable the targeting of proteins for which pan-inhibition of all isoforms is toxic and poorly tolerated. Multiple protein isoforms arise from most genes by alternative RNA splicing and other mechanisms, but these isoforms are often neglected in drug discovery. This Review discusses the modes of action of emerging therapeutics that focus on protein isoforms as well as how isoforms can serve as biomarkers and facilitate targeted drug delivery.","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Engineered parasite delivers proteins to the brain","authors":"Sarah Crunkhorn","doi":"10.1038/d41573-024-00137-w","DOIUrl":"10.1038/d41573-024-00137-w","url":null,"abstract":"","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142042708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Degrading cell-free DNA to prevent recurrent stroke","authors":"Alex Eccleston","doi":"10.1038/d41573-024-00136-x","DOIUrl":"10.1038/d41573-024-00136-x","url":null,"abstract":"","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142022034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"FDA approves first TCR-engineered T cell therapy, for rare soft-tissue cancer","authors":"Asher Mullard","doi":"10.1038/d41573-024-00134-z","DOIUrl":"10.1038/d41573-024-00134-z","url":null,"abstract":"","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141994411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"FDA approves IDH1 and IDH2 inhibitor for brain cancer","authors":"Asher Mullard","doi":"10.1038/d41573-024-00135-y","DOIUrl":"10.1038/d41573-024-00135-y","url":null,"abstract":"","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141994410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A golden age of muscarinic acetylcholine receptor modulation in neurological diseases","authors":"Andrew B. Tobin","doi":"10.1038/s41573-024-01007-1","DOIUrl":"10.1038/s41573-024-01007-1","url":null,"abstract":"Over the past 40 years, the muscarinic acetylcholine receptor family, particularly the M1-receptor and M4-receptor subtypes, have emerged as validated targets for the symptomatic treatment of neurological diseases such as schizophrenia and Alzheimer disease. However, despite considerable effort and investment, no drugs have yet gained clinical approval. This is largely attributable to cholinergic adverse effects that have halted the majority of programmes and resulted in a waning of interest in these G-protein-coupled receptor targets. Recently, this trend has been reversed. Driven by advances in structure-based drug design and an appreciation of the optimal pharmacological properties necessary to deliver clinical efficacy while minimizing adverse effects, a new generation of M1-receptor and M4-receptor orthosteric agonists and positive allosteric modulators are now entering the clinic. These agents offer the prospect of novel therapeutic solutions for ‘hard to treat’ neurological diseases, heralding a new era of muscarinic drug discovery. The M1 and M4 muscarinic acetylcholine receptors represent promising therapeutic targets for Alzheimer disease and schizophrenia. However, the development of agents targeting these receptors has been limited by their adverse cholinergic effects. Here, Tobin discusses how recent advances in the field — including an increased understanding of receptor biology and signalling, as well as the application of structure-based drug design — are enabling a new generation of muscarinic receptor modulators to enter clinical development.","PeriodicalId":19068,"journal":{"name":"Nature Reviews. Drug Discovery","volume":null,"pages":null},"PeriodicalIF":122.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141982824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}