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Stimuli-responsive synthetic ionophores for therapeutic applications
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-03-03 DOI: 10.1016/j.cbpa.2025.102582
Sandip Chattopadhayay, Pinaki Talukdar
Nature endowed different structurally and functionally complex transmembrane transporters to flux the ions to maintain the healthy functions of the cells by turning on or turning off the ion flow in the presence of external stimuli. Mimicking this stimuli-responsive behavior of natural transporters using synthetic analogs is currently an ongoing interest in the scientific community. This short review highlights the recent development of synthetic responsive ionophore systems. This includes pH, light, redox, enzyme, and multi-stimuli-controlled ionophores systems that have the potential to be utilized in different biomedical applications ranging from antibacterial activity to anticancer activity.
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引用次数: 0
Corrigendum to “Enabling structural biological electron paramagnetic resonance spectroscopy in membrane proteins through spin labelling” Curr Opin Chem Biol 84 (2025) 102564
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-26 DOI: 10.1016/j.cbpa.2025.102583
Anokhi Shah , Joshua L. Wort , Yue Ma , Christos Pliotas
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引用次数: 0
Lipid probes to study ion channels
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-19 DOI: 10.1016/j.cbpa.2025.102581
Helene Jahn , Show-Ling Shyng , Carsten Schultz
Lipids can have specific interaction partners and act as small molecule regulators of proteins, especially for transmembrane proteins. Transmembrane proteins, such as ion channels, can be influenced by lipids in four ways; lipids can be direct ligands, localize effector proteins or domains, affect protein–protein interaction, or change the biophysical properties of the surrounding membrane. In this article, we will give examples of how lipids directly interact with ion channels and address the complex aspect of indirect regulation via lipids of the surrounding membrane bilayer. In addition, we discuss current and propose future molecular tools and experiments elucidating the many roles lipids play in ion channel function.
{"title":"Lipid probes to study ion channels","authors":"Helene Jahn ,&nbsp;Show-Ling Shyng ,&nbsp;Carsten Schultz","doi":"10.1016/j.cbpa.2025.102581","DOIUrl":"10.1016/j.cbpa.2025.102581","url":null,"abstract":"<div><div>Lipids can have specific interaction partners and act as small molecule regulators of proteins, especially for transmembrane proteins. Transmembrane proteins, such as ion channels, can be influenced by lipids in four ways; lipids can be direct ligands, localize effector proteins or domains, affect protein–protein interaction, or change the biophysical properties of the surrounding membrane. In this article, we will give examples of how lipids directly interact with ion channels and address the complex aspect of indirect regulation via lipids of the surrounding membrane bilayer. In addition, we discuss current and propose future molecular tools and experiments elucidating the many roles lipids play in ion channel function.</div></div>","PeriodicalId":291,"journal":{"name":"Current Opinion in Chemical Biology","volume":"85 ","pages":"Article 102581"},"PeriodicalIF":6.9,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445707","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}
引用次数: 0
Illuminating antifungal mode of action and resistance with fluorescent probes
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-17 DOI: 10.1016/j.cbpa.2025.102570
Moriah Jospe-Kaufman, Micha Fridman
The rise in fungal infections, driven by pathogens resistant to the limited scope of antifungal agents available, poses an increasing threat to global health and the economy. Addressing this challenge requires a thorough understanding of the mechanisms of antifungal agents and the development of advanced resistance diagnostic methods. This opinion manuscript highlights recent advancements in antifungal research, with a focus on chemical biology approaches, particularly the development of fluorescent probes derived from various antifungal agents. These probes reveal new aspects of antifungal activity and provide deeper insights into modes of action and resistance mechanisms. Live cell imaging of fungal pathogens labeled with these probes has uncovered novel strategies to enhance antifungal efficacy, understand virulence factors, and detect resistance. These unique small-molecule tools offer powerful new avenues for addressing the fungal infections crisis, harnessing chemical biology approaches to develop innovative solutions to the global challenges posed by fungi.
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引用次数: 0
Recent advances in high-throughput screening methods for small molecule modulators in bacteria
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-14 DOI: 10.1016/j.cbpa.2025.102571
Hannah G. Addis , Erin E. Carlson
Bacterial infections, especially those that are resistant to antibiotics, constitute an increasing threat to public health. Deeper understanding about the systems that govern resistant infections, followed by the design of new therapies is crucial to minimizing morbidity and mortality due to antibacterial resistance. To this end, the discovery of small molecules capable of modulating bacterial processes is an important goal. Herein, we summarize recent developments in high-throughput screening, including the use of in vitro biochemical assays, reporter fusion read-out methods, and live cell phenotypic assays in bacteria. We also highlight key advantages and disadvantages of each assay type, as well as exciting new innovations.
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引用次数: 0
Optogenetic engineering for ion channel modulation
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-03 DOI: 10.1016/j.cbpa.2025.102569
Tianlu Wang , Tatsuki Nonomura , Tien-Hung Lan , Yubin Zhou
Optogenetics, which integrates photonics and genetic engineering to control protein activity and cellular processes, has transformed biomedical research. Its precise spatiotemporal control, minimal invasiveness, and tunable reversibility have spurred its widespread adoption in both basic and clinical research. Optogenetic techniques have been applied to partially restore vision in blind patients and are being actively explored as innovative treatments for neurological, psychiatric, cardiac, and immunological disorders. Microbial channelrhodopsins (ChRs) allow precise manipulation of neuronal and cardiac activities, while vertebrate rhodopsins offer unique opportunities for ion channel modulation through G-protein-coupled receptor (GPCR) pathways. Plant-derived photoswitchable domains can also be engineered into ion channels to confer photosensitivity. This review summarizes the latest progress in engineering genetically encoded light-sensitive ion channel actuators and modulators (GELICAMs) with diverse ion selectivity and spectral sensitivity. We further discuss the potential applications and challenges of these tools in advancing biomedical research and therapeutic interventions.
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引用次数: 0
Developing photoactivated artificial enzymes for sustainable fuel production 开发用于可持续燃料生产的光激活人工酶。
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-01 DOI: 10.1016/j.cbpa.2024.102553
Ashlee E. Wertz , Hannah S. Shafaat
Enzymes catalyze molecular reactions with remarkable efficiency and selectivity under mild conditions. Photoactivated enzymes make use of a light-absorbing chromophore to drive chemical transformations, ideally using sunlight as an energy source. The direct attachment of a chromophore to native enzymes is advantageous, as information on the underlying catalytic mechanisms can be obtained. Artificial enzyme development seeks to mimic natural enzymes to generate valuable products with high efficiency in a simplified, robust framework. Light-initiated artificial enzymatic catalysis combines these strategies and represents a promising avenue for sustainable generation of value-added products. Furthermore, while early systems often combined three components for catalysis-- the enzyme, a photosensitizer, and a sacrificial electron donor-- we describe an adaptation of this approach in which the chromophore is immobilized on the enzyme, removing the need for diffusional collision. The latter is advantageous as it provides deeper insight into the catalytic mechanism and facilitates further optimization of the designed construct. In this opinion, we highlight several examples of light-driven, artificial metalloenzymes, and suggest that ongoing and future efforts should leverage prior mechanistic studies on native enzymes as a foundation for strategic design of next-generation photoactivated protein-based catalysts.
酶在温和条件下催化分子反应具有显著的效率和选择性。光激活酶利用吸收光的发色团来驱动化学转化,理想情况下使用阳光作为能量来源。发色团与天然酶的直接连接是有利的,因为可以获得有关潜在催化机制的信息。人工酶的发展旨在模仿天然酶,在简化、健壮的框架内高效地产生有价值的产品。光引发的人工酶催化结合了这些策略,代表了可持续产生增值产品的有前途的途径。此外,虽然早期的系统通常结合三种成分进行催化-酶,光敏剂和牺牲电子供体-我们描述了这种方法的适应性,其中发色团固定在酶上,消除了扩散碰撞的需要。后者是有利的,因为它提供了对催化机制的更深入的了解,并有利于进一步优化所设计的结构。在这种观点下,我们强调了几个光驱动的人工金属酶的例子,并建议正在进行的和未来的努力应该利用现有的天然酶的机制研究作为下一代光激活蛋白催化剂战略设计的基础。
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引用次数: 0
Bacterial peptidoglycan as a living polymer 细菌肽聚糖是一种活的聚合物。
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-01 DOI: 10.1016/j.cbpa.2024.102562
Amr M. El-Araby, Jed F. Fisher, Shahriar Mobashery
The peptidoglycan manifests as a multifaceted component of the bacterial cell wall. Throughout the lifecycle of the bacterium, the peptidoglycan is deconstructed, rebuilt, and remodeled for bacterial cell growth and replication. Degradation products of the peptidoglycan serve as precursors for cell-wall building blocks via recycling processes and as signaling molecules. Cell-wall recycling and de novo cell-wall synthesis converge biochemically at the cytoplasmic compartment. Peptidoglycan biochemistry is finely tuned to maintain the polymer's functions and is intimately connected to antibiotic-resistance mechanisms. Cell-wall-modifying enzymes present a unique opportunity for the discovery of antibiotics and antibiotic adjuvants. The unique chemical template of the peptidoglycan has been a target of numerous chemical biology approaches for investigating its functions and modulation. In this review, we highlight the current perspective on peptidoglycan research. We present recent efforts to understand the peptidoglycan as a functional component of antibiotic resistance, and as a target for antimicrobial therapy.
肽聚糖是细菌细胞壁的多层面组成部分。在细菌的整个生命周期中,肽聚糖被分解、重建和重塑,以促进细菌细胞的生长和复制。肽聚糖的降解产物通过再循环过程成为细胞壁结构单元的前体和信号分子。细胞壁再循环和细胞壁从头合成在细胞质区进行生化交汇。肽聚糖的生物化学经过精细调整,以维持聚合物的功能,并与抗生素耐药性机制密切相关。细胞壁修饰酶为发现抗生素和抗生素佐剂提供了一个独特的机会。肽聚糖的独特化学模板一直是众多化学生物学方法研究其功能和调节的目标。在本综述中,我们将重点介绍肽聚糖研究的现状。我们介绍了最近为了解肽聚糖作为抗生素耐药性功能成分和抗菌治疗靶点所做的努力。
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引用次数: 0
Illuminating anions in biology with genetically encoded fluorescent biosensors 用基因编码荧光生物传感器照亮生物学中的阴离子。
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-01 DOI: 10.1016/j.cbpa.2024.102548
Mariah A. Cook , Shelby M. Phelps , Jasmine N. Tutol , Derik A. Adams, Sheel C. Dodani
Anions are critical to all life forms. Anions can be absorbed as nutrients or biosynthesized. Anions shape a spectrum of fundamental biological processes at the organismal, cellular, and subcellular scales. Genetically encoded fluorescent biosensors can capture anions in action across time and space dimensions with microscopy. The firsts of such technologies were reported more than 20 years for monoatomic chloride and polyatomic cAMP anions. However, the recent boom of anion biosensors illuminates the unknowns and opportunities that remain for toolmakers and end users to meet across the aisle to spur innovations in biosensor designs and applications for discovery anion biology. In this review, we will canvas progress made over the last three years for biologically relevant anions that are classified as halides, oxyanions, carboxylates, and nucleotides.
阴离子对所有生命形式都至关重要。阴离子可以作为营养物被吸收或被生物合成。阴离子在有机体、细胞和亚细胞尺度上塑造了一系列基本的生物过程。基因编码的荧光生物传感器可以通过显微镜捕捉在时间和空间维度上的阴离子。这类技术的首次报道是在20多年前对单原子氯离子和多原子cAMP阴离子进行的。然而,最近阴离子生物传感器的蓬勃发展为工具制造商和最终用户提供了未知和机会,以刺激生物传感器设计和应用的创新,以发现阴离子生物学。在这篇综述中,我们将回顾过去三年在生物相关阴离子方面取得的进展,这些阴离子被分类为卤化物、氧阴离子、羧酸盐和核苷酸。
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引用次数: 0
Enabling structural biological electron paramagnetic resonance spectroscopy in membrane proteins through spin labelling 通过自旋标记实现膜蛋白结构生物电子顺磁共振波谱。
IF 6.9 2区 生物学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-02-01 DOI: 10.1016/j.cbpa.2024.102564
Anokhi Shah , Joshua L. Wort , Yue Ma , Christos Pliotas
Pulsed dipolar electron paramagnetic resonance spectroscopy (PDS), combined with site-directed spin-labelling, represents a powerful tool for the investigation of biomacromolecules, emerging as a keystone approach in structural biology. Increasingly, PDS is applied to study highly complex integral membrane protein systems, such as mechanosensitive ion channels, transporters, G-protein coupled receptors, ion pumps, and outer membrane proteins elucidating their dynamics and revealing conformational ensembles. Indeed, PDS offers a platform to study intermediate or lowly-populated states that are otherwise invisible to other modern methods, such as X-ray crystallography, cryo-EM, and hydrogen-deuterium exchange-mass spectrometry. Importantly, advances in spin labelling strategies welcome a new era of membrane protein investigation under near-native or in-cell conditions. Here, we review recent integral membrane protein PDS applications, and highlight well-suited, emerging spin labelling strategies that show promise for future studies.
脉冲偶极电子顺磁共振波谱(PDS)与定点自旋标记相结合,是研究生物大分子的有力工具,是结构生物学研究的重要手段。PDS越来越多地被应用于研究高度复杂的整体膜蛋白系统,如机械敏感离子通道、转运体、g蛋白偶联受体、离子泵和外膜蛋白,以阐明它们的动力学和揭示构象集合。事实上,PDS提供了一个研究中间或低密度态的平台,否则其他现代方法是看不见的,如x射线晶体学,低温电子显微镜和氢-氘交换质谱法。重要的是,自旋标记策略的进步迎来了近天然或细胞内条件下膜蛋白研究的新时代。在这里,我们回顾了最近的整体膜蛋白PDS应用,并强调了适合的,新兴的自旋标记策略,显示出未来研究的希望。
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Current Opinion in Chemical Biology
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