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Phospholipase D (PLD) is an enzyme with many functions, one of which is the synthesis of phosphatidic acid (PA), a molecule with a myriad of effects on various organ systems and processes. These numerous roles make it hard to understand the true action of PA in cellular and bodily processes. Imaging PLD activity is one way to better understand the synthesis of PA and start to elucidate its function. However, many of the current imaging techniques for PLD come with limitations. This chapter presents a thorough methodology of a new imaging technique for PLD activity with clickable alcohols via transphosphatidylation (IMPACT) and Real-Time IMPACT (RT-IMPACT) that takes advantage of clickable chemistry to overcome current limitations. Using strain-promoted azide-alkyne cycloaddition (SPAAC), inverse electron-demand Diels-Alder (IEDDA), and the synthesis of various organic compounds, this chapter will explain a step-by-step procedure of how to perform the IMPACT and RT-IMPACT method(s).
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http://dx.doi.org/10.1007/978-1-0716-3902-3_12 | DOI Listing |
Bioorg Med Chem Lett
August 2025
Program in Chemical Biology, Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA; Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA. El
Nuclear lamins are type V intermediate filament proteins to support the mechanical stability of mammalian cell nucleus. They also participate in various signaling activities in the cells. We recently discovered substituted pyrroloquinazoline LBL1 as the first small molecule to directly target nuclear lamins despite their poor druggability.
View Article and Find Full Text PDFMol Pharm
August 2025
School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Biologically active molecules, such as carbohydrates, peptides, and proteins, are attractive candidates for positron emission tomography (PET) imaging because of their strong target affinity and biocompatibility. Among available radionuclides, fluorine-18 (F) is widely used in clinical practice because of its moderate half-life and high-quality imaging properties. However, traditional F-labeling methods often require a laborious procedure and harsh conditions, which may compromise the structural integrity and biological functions.
View Article and Find Full Text PDFAdv Healthc Mater
August 2025
Key Laboratory of Functional Polymer Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.
Biofilm-associated infections pose a major clinical challenge due to their robust resistance to conventional antimicrobial treatments, primarily driven by the protective extracellular polymeric substances (EPSs) that shield bacteria. Existing strategies struggle to eliminate mature biofilms effectively. In response, a novel therapeutic approach is developed, which integrates phage T4 with a clickable aggregation-induced emission photosensitizer, pyone-TPE-BT.
View Article and Find Full Text PDFPediatr Rheumatol Online J
August 2025
Seattle Children's Hospital, Seattle, Washington, USA.
Background: The ChRonic nonbacterial Osteomyelitis Magnetic Resonance Imaging Scoring (CROMRIS) tool was developed to assess specific characteristics of bone and soft tissue inflammation on MR images of patients with CNO; however, this tool was labor intensive to utilize. We aimed (1) to refine and adapt this scoring method, (2) to assess the usability of this web-based CROMRIS system among radiologists and (3) to evaluate the absolute agreement of the components and summary CROMRIS scores at each body site, and the interrater reliability.
Methods: We used a qualitative, user-centered design approach involving software developers, rheumatologists, radiologists, and a patient artist to adapt the paper-based scoring system to a web-based prototype that was further refined by monthly meetings between the group members.
J Agric Food Chem
August 2025
Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad, Kerala 678 623, India.
Epigallocatechin-3-gallate (EGCG), the most bioactive catechin of green tea, exhibits remarkable antibacterial activity against a wide range of bacteria, including multidrug-resistant strains. However, its precise molecular targets and mechanisms of action remain poorly understood. Herein, we have designed YnEGCG, a clickable and cell-permeable activity-based probe of EGCG, to comprehensively investigate its molecular targets through chemoproteomics.
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