1
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Teli G, Pal R, Maji L, Sengupta S, Raghavendra NM, Matada GSP. Medicinal Chemistry Perspectives on Recent Advances in Src Kinase Inhibitors as a Potential Target for the Development of Anticancer Agents: Biological Profile, Selectivity, Structure-Activity Relationship. Chem Biodivers 2023; 20:e202300515. [PMID: 37563848 DOI: 10.1002/cbdv.202300515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/12/2023]
Abstract
The physiological Src proto-oncogene is a protein tyrosine kinase receptor that served as the essential signaling pathway in different types of cancer. Src kinase receptor is divided into different domains: a unique domain, an SH3 domain, an SH2 domain, a protein tyrosine kinase domain, and a regulatory tail, which runs from the N-terminus to the C-terminus. Src kinase inhibitors bind in the kinase domain and are activated by phosphorylation. The etiology of cancer involved various signaling pathways and Src signaling pathways are also involved in those clusters. Although the dysregulation of Src kinase resulted in cancer being discovered in the late 19th century it is still considered a cult pathway because it is not much explored by different medicinal chemists and oncologists. The Src kinase regulated through different kinase pathways (MAPK, PI3K/Akt/mTOR, JAK/STAT3, Hippo kinase, PEAK1, and Rho/ROCK pathways) and proceeded downstream signaling to conduct cell proliferation, angiogenesis, migration, invasion, and metastasis of cancer cells. There are numerous FDA-approved drugs flooded the market but still, there is a huge demand for the creation of novel anticancer drugs. As the existing drugs are accompanied by several adverse effects and drug resistance due to rapid mutation in proteins. In this review, we have elaborated about the structure and activation of Src kinase, as well as the development of Src kinase inhibitors. Our group also provided a comprehensive overview of Src inhibitors throughout the last two decades, including their biological activity, structure-activity relationship, and Src kinase selectivity. The Src binding pocket has been investigated in detail to better comprehend the interaction of Src inhibitors with amino acid residues. We have strengthened the literature with our contribution in terms of molecular docking and ADMET studies of top compounds. We hope that the current analysis will be a useful resource for researchers and provide glimpse of direction toward the design and development of more specific, selective, and potent Src kinase inhibitors.
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Affiliation(s)
- Ghanshyam Teli
- Integrated Drug Discovery Center, Department of Pharmaceutical Chemistry, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Rohit Pal
- Integrated Drug Discovery Center, Department of Pharmaceutical Chemistry, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Lalmohan Maji
- Integrated Drug Discovery Center, Department of Pharmaceutical Chemistry, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Sindhuja Sengupta
- Integrated Drug Discovery Center, Department of Pharmaceutical Chemistry, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
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Liu B, Stone OJ, Pablo M, Herron JC, Nogueira AT, Dagliyan O, Grimm JB, Lavis LD, Elston TC, Hahn KM. Biosensors based on peptide exposure show single molecule conformations in live cells. Cell 2021; 184:5670-5685.e23. [PMID: 34637702 DOI: 10.1016/j.cell.2021.09.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 07/22/2021] [Accepted: 09/17/2021] [Indexed: 11/19/2022]
Abstract
We describe an approach to study the conformation of individual proteins during single particle tracking (SPT) in living cells. "Binder/tag" is based on incorporation of a 7-mer peptide (the tag) into a protein where its solvent exposure is controlled by protein conformation. Only upon exposure can the peptide specifically interact with a reporter protein (the binder). Thus, simple fluorescence localization reflects protein conformation. Through direct excitation of bright dyes, the trajectory and conformation of individual proteins can be followed. Simple protein engineering provides highly specific biosensors suitable for SPT and FRET. We describe tagSrc, tagFyn, tagSyk, tagFAK, and an orthogonal binder/tag pair. SPT showed slowly diffusing islands of activated Src within Src clusters and dynamics of activation in adhesions. Quantitative analysis and stochastic modeling revealed in vivo Src kinetics. The simplicity of binder/tag can provide access to diverse proteins.
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Affiliation(s)
- Bei Liu
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Orrin J Stone
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Michael Pablo
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Program in Molecular and Cellular Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - J Cody Herron
- Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Ana T Nogueira
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Onur Dagliyan
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Jonathan B Grimm
- Janelia Research Campus, The Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Luke D Lavis
- Janelia Research Campus, The Howard Hughes Medical Institute, Ashburn, VA 20147, USA
| | - Timothy C Elston
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Curriculum in Bioinformatics and Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Klaus M Hahn
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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3
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Kerjouan A, Boyault C, Oddou C, Hiriart-Bryant E, Grichine A, Kraut A, Pezet M, Balland M, Faurobert E, Bonnet I, Coute Y, Fourcade B, Albiges-Rizo C, Destaing O. Control of SRC molecular dynamics encodes distinct cytoskeletal responses by specifying signaling pathway usage. J Cell Sci 2021; 134:237349. [PMID: 33495358 DOI: 10.1242/jcs.254599] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 11/13/2020] [Indexed: 01/23/2023] Open
Abstract
Upon activation by different transmembrane receptors, the same signaling protein can induce distinct cellular responses. A way to decipher the mechanisms of such pleiotropic signaling activity is to directly manipulate the decision-making activity that supports the selection between distinct cellular responses. We developed an optogenetic probe (optoSRC) to control SRC signaling, an example of a pleiotropic signaling node, and we demonstrated its ability to generate different acto-adhesive structures (lamellipodia or invadosomes) upon distinct spatio-temporal control of SRC kinase activity. The occurrence of each acto-adhesive structure was simply dictated by the dynamics of optoSRC nanoclusters in adhesive sites, which were dependent on the SH3 and Unique domains of the protein. The different decision-making events regulated by optoSRC dynamics induced distinct downstream signaling pathways, which we characterized using time-resolved proteomic and network analyses. Collectively, by manipulating the molecular mobility of SRC kinase activity, these experiments reveal the pleiotropy-encoding mechanism of SRC signaling.
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Affiliation(s)
- Adèle Kerjouan
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Cyril Boyault
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Christiane Oddou
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Edwige Hiriart-Bryant
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Alexei Grichine
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | | | - Mylène Pezet
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Martial Balland
- Laboratoire Interdisciplinaire de Physique (Liphy), Université Grenoble Alpes, CNRS, 38000, 38402 Saint-Martin-d'Héres, France
| | - Eva Faurobert
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Isabelle Bonnet
- Laboratoire Physico-Chimie Curie, Institut Curie, PSL Research University, Sorbonne University, UMR 168, 75005 Paris, France
| | - Yohann Coute
- Laboratoire EDYP, BIG-BGE, CEA, 38054 Grenoble, France
| | - Bertrand Fourcade
- Laboratoire Interdisciplinaire de Physique (Liphy), Université Grenoble Alpes, CNRS, 38000, 38402 Saint-Martin-d'Héres, France
| | - Corinne Albiges-Rizo
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
| | - Olivier Destaing
- Institute for Advanced Biosciences, Centre de Recherche Université Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, 38706 La Tronche, France
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Pang Y, Liu Z, Han H, Wang B, Li W, Mao C, Liu S. Peptide SMIM30 promotes HCC development by inducing SRC/YES1 membrane anchoring and MAPK pathway activation. J Hepatol 2020; 73:1155-1169. [PMID: 32461121 DOI: 10.1016/j.jhep.2020.05.028] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Growing evidence shows that some non-coding RNAs (ncRNAs) contain small open reading frames (smORFs) that are translated into short peptides. Herein, we aimed to determine where and how these short peptides might promote hepatocellular carcinoma (HCC) development. METHODS We performed an RNA-immunoprecipitation followed by high-throughput sequencing (RIP-seq) assay with an antibody against ribosomal protein S6 (RPS6) on 4 cancer cell lines. Focusing on 1 long non-coding RNA (lncRNA), LINC00998, we used qPCR and public databases to evaluate its expression level in patients with HCC. Special vectors were constructed to confirm its coding potential. We also explored the function and mechanism of LINC00998-encoded peptide in tumor growth and metastasis. RESULTS We discovered that many lncRNAs bind to RPS6 in cancer cells. One of these lncRNAs, LINC00998, encoded a small endogenous peptide, termed SMIM30. SMIM30, rather than the RNA itself, promoted HCC tumorigenesis by modulating cell proliferation and migration, and its level was correlated with poor survival in patients with HCC. Furthermore, SMIM30 was transcribed by c-Myc and then drove the membrane anchoring of the non-receptor tyrosine kinases SRC/YES1. Moreover, the downstream MAPK signaling pathway was activated by SRC/YES1. CONCLUSIONS Our results not only unravel a new mechanism of HCC tumorigenesis promoted by ncRNA-encoded peptides, but also suggest that these peptides can serve as a new target for HCC cancer therapy and a new biomarker for HCC diagnosis and prognosis. LAY SUMMARY Very little is known about how peptides activate signaling pathways that play a crucial role in diseases such as cancer. Specifically, we reported on a conserved peptide encoded by LINC00998, SMIM30. This peptide promoted the tumorigenesis of hepatocellular carcinoma (HCC) by modulating cell proliferation and migration. Of note, it bound the non-receptor tyrosine kinases, SRC/YES1, to drive their membrane anchoring and phosphorylation, activating the downstream MAPK signaling pathway. Our work not only unravels a new mechanism of HCC tumorigenesis promoted by peptides, but also demonstrates how the peptide works to activate a signaling pathway.
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Affiliation(s)
- Yanan Pang
- Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Zhiyong Liu
- Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Huan Han
- Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Beilei Wang
- Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Wei Li
- Changzheng Hospital, Second Military Medical University, Shanghai 200433, China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019-5300, USA; School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, PR China.
| | - Shanrong Liu
- Changhai Hospital, Second Military Medical University, Shanghai 200433, China.
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5
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McClendon CJ, Miller WT. Structure, Function, and Regulation of the SRMS Tyrosine Kinase. Int J Mol Sci 2020; 21:E4233. [PMID: 32545875 PMCID: PMC7352994 DOI: 10.3390/ijms21124233] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/08/2020] [Accepted: 06/12/2020] [Indexed: 01/05/2023] Open
Abstract
Src-related kinase lacking C-terminal regulatory tyrosine and N-terminal myristoylation sites (SRMS) is a tyrosine kinase that was discovered in 1994. It is a member of a family of nonreceptor tyrosine kinases that also includes Brk (PTK6) and Frk. Compared with other tyrosine kinases, there is relatively little information about the structure, function, and regulation of SRMS. In this review, we summarize the current state of knowledge regarding SRMS, including recent results aimed at identifying downstream signaling partners. We also present a structural model for the enzyme and discuss the potential involvement of SRMS in cancer cell signaling.
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Affiliation(s)
- Chakia J. McClendon
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY 11794-8661, USA;
| | - W. Todd Miller
- Department of Physiology and Biophysics, Stony Brook University, Stony Brook, NY 11794-8661, USA;
- Department of Veterans Affairs Medical Center, Northport, NY 11768, USA
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6
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Bagnato G, Leopizzi M, Urciuoli E, Peruzzi B. Nuclear Functions of the Tyrosine Kinase Src. Int J Mol Sci 2020; 21:ijms21082675. [PMID: 32290470 PMCID: PMC7215861 DOI: 10.3390/ijms21082675] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/13/2022] Open
Abstract
Src is the representative member of the Src-family kinases (SFKs), a group of tyrosine kinases involved in several cellular processes. Its main function has been for long confined to the plasma membrane/cytoplasm compartment, being a myristoylated protein anchored to the cell membrane and functioning downstream to receptors, most of them lacking intrinsic kinase activity. In the last decades, new roles for some SFKs have been described in the nuclear compartment, suggesting that these proteins can also be involved in directly regulating gene transcription or nucleoskeleton architecture. In this review, we focused on those nuclear functions specifically attributable to Src, by considering its function as both tyrosine kinase and adapting molecule. In particular, we addressed the Src involvement in physiological as well as in pathological conditions, especially in tumors.
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Affiliation(s)
- Giulia Bagnato
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
| | - Martina Leopizzi
- Department of Medico-Surgical Sciences and Biotechnology, Polo Pontino, Sapienza University, 04100 Latina, Italy;
| | - Enrica Urciuoli
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
| | - Barbara Peruzzi
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
- Correspondence:
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7
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Mohammad IL, Mateos B, Pons M. The disordered boundary of the cell: emerging properties of membrane-bound intrinsically disordered proteins. Biomol Concepts 2019; 10:25-36. [DOI: 10.1515/bmc-2019-0003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/28/2019] [Indexed: 12/12/2022] Open
Abstract
AbstractWe define the disordered boundary of the cell (DBC) as the system formed by membrane tethered intrinsically disordered protein regions, dynamically coupled to the underlying membrane.The emerging properties of the DBC makes it a global system of study, which cannot be understood from the individual properties of their components. Similarly, the properties of lipid bilayers cannot be understood from just the sum of the properties of individual lipid molecules.The highly anisotropic confined environment, restricting the position and orientation of interacting sites, is affecting the properties of individual disordered proteins. In fact, the collective effect caused by high concentrations of disordered proteins extend beyond the sum of individual effects.Examples of emerging properties of the DBC include enhanced protein-protein interactions, protein-driven phase separations, Z-compartmentalization, and protein modulated electrostatics.
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Affiliation(s)
- Irrem-Laareb Mohammad
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, University of Barcelona, Baldiri Reixac 10-12, 08028Barcelona, Spain
| | - Borja Mateos
- Max F. Perutz Laboratories, Department of Computational and Structural Biology, University of Vienna, Campus Vienna Biocenter 5, 1030Vienna, Austria
| | - Miquel Pons
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, University of Barcelona, Baldiri Reixac 10-12, 08028Barcelona, Spain
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8
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Le Roux AL, Mohammad IL, Mateos B, Arbesú M, Gairí M, Khan FA, Teixeira JMC, Pons M. A Myristoyl-Binding Site in the SH3 Domain Modulates c-Src Membrane Anchoring. iScience 2019; 12:194-203. [PMID: 30690395 PMCID: PMC6354742 DOI: 10.1016/j.isci.2019.01.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/04/2018] [Accepted: 01/04/2019] [Indexed: 12/25/2022] Open
Abstract
The c-Src oncogene is anchored to the cytoplasmic membrane through its N-terminal myristoylated SH4 domain. This domain is part of an intramolecular fuzzy complex with the SH3 and Unique domains. Here we show that the N-terminal myristoyl group binds to the SH3 domain in the proximity of the RT loop, when Src is not anchored to a lipid membrane. Residues in the so-called Unique Lipid Binding Region modulate this interaction. In the presence of lipids, the myristoyl group is released from the SH3 domain and inserts into the lipid membrane. The fuzzy complex with the SH4 and Unique domains is retained in the membrane-bound form, placing the SH3 domain close to the membrane surface and restricting its orientation. The apparent affinity of myristoylated proteins containing the SH4, Unique, and SH3 domains is modulated by these intramolecular interactions, suggesting a mechanism linking c-Src activation and membrane anchoring.
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Affiliation(s)
- Anabel-Lise Le Roux
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Irrem-Laareb Mohammad
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Borja Mateos
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Miguel Arbesú
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Margarida Gairí
- NMR Facility, Scientific and Technological Centers, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Farman Ali Khan
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain; Department of Biochemistry, Abdul Wali Khan University, Mardan 23200, Pakistan
| | - João M C Teixeira
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain
| | - Miquel Pons
- BioNMR Laboratory, Inorganic and Organic Chemistry Department, Universitat de Barcelona, Baldiri Reixac, 10-12, 08028 Barcelona, Spain.
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Kaliszewski MJ, Shi X, Hou Y, Lingerak R, Kim S, Mallory P, Smith AW. Quantifying membrane protein oligomerization with fluorescence cross-correlation spectroscopy. Methods 2018; 140-141:40-51. [PMID: 29448037 DOI: 10.1016/j.ymeth.2018.02.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 12/17/2017] [Accepted: 02/07/2018] [Indexed: 01/27/2023] Open
Abstract
Fluorescence cross-correlation spectroscopy (FCCS) is an advanced fluorescence technique that can quantify protein-protein interactions in vivo. Due to the dynamic, heterogeneous nature of the membrane, special considerations must be made to interpret FCCS data accurately. In this study, we describe a method to quantify the oligomerization of membrane proteins tagged with two commonly used fluorescent probes, mCherry (mCH) and enhanced green (eGFP) fluorescent proteins. A mathematical model is described that relates the relative cross-correlation value (fc) to the degree of oligomerization. This treatment accounts for mismatch in the confocal volumes, combinatoric effects of using two fluorescent probes, and the presence of non-fluorescent probes. Using this model, we calculate a ladder of fc values which can be used to determine the oligomer state of membrane proteins from live-cell experimental data. Additionally, a probabilistic mathematical simulation is described to resolve the affinity of different dimeric and oligomeric protein controls.
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Affiliation(s)
| | - Xiaojun Shi
- Department of Chemistry, University of Akron, Akron, OH 44325, USA
| | - Yixuan Hou
- Food Animal Health Research Program, Ohio Agriculture Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, OH 44691, USA
| | - Ryan Lingerak
- Department of Biology, University of Akron, Akron, OH 44325, USA
| | - Soyeon Kim
- Department of Chemistry, University of Akron, Akron, OH 44325, USA
| | - Paul Mallory
- Department of Chemistry, University of Akron, Akron, OH 44325, USA
| | - Adam W Smith
- Department of Chemistry, University of Akron, Akron, OH 44325, USA.
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10
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Wang J, Huang X, Liu H, Dong C, Ren J. Fluorescence and Scattering Light Cross Correlation Spectroscopy and Its Applications in Homogeneous Immunoassay. Anal Chem 2017; 89:5230-5237. [PMID: 28436659 DOI: 10.1021/acs.analchem.6b04547] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this work, we propose fluorescence and scattering light cross-correlation spectroscopy (FSCCS) based on laser confocal configuration using silver nanoparticle (SNPs) and Alexa Fluor 488 (Alexa) as probe pairs. FSCCS is a single molecule (particle) method, and its principle is similar to that of fluorescence cross-correlation spectroscopy (FCCS). We established the setup of FSCCS using single wavelength laser and developed an immunoassay model of FSCCS. The reliability and adaptability of FSCCS method were evaluated by homogeneous sandwich immunoassay mode. In the study, liver cancer biomarker alpha-fetoprotein (AFP) was used as an assay model, two different antibodies were labeled with SNPs and fluorophore Alexa Fluor 488, respectively. In the optimal conditions, the linear range of AFP covers 5 pM to 580 pM and the detection limit is 3.1 pM. This method was successfully applied for direct determination of AFP levels in human serum samples, and the obtained results were in good agreement with data obtained via ELISAs. The advantage of this method lies in its simplicity, attractive SNPs probes, high sensitivity and selectivity and high efficiency. We believe that FSCCS method exhibits promising potential applications in homogeneous bioassays and study on the molecular interaction and nanoparticle-molecule interaction.
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Affiliation(s)
- Jinjie Wang
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China.,College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science , 333 Longteng Road, Shanghai, 201620, P.R. China
| | - Xiangyi Huang
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Heng Liu
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Chaoqing Dong
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Jicun Ren
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai, 200240, P. R. China
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11
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Fowler PW, Williamson JJ, Sansom MSP, Olmsted PD. Roles of Interleaflet Coupling and Hydrophobic Mismatch in Lipid Membrane Phase-Separation Kinetics. J Am Chem Soc 2016; 138:11633-42. [PMID: 27574865 PMCID: PMC5025830 DOI: 10.1021/jacs.6b04880] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
![]()
Characterizing
the nanoscale dynamic organization within lipid
bilayer
membranes is central
to our understanding of cell membranes at a molecular level. We investigate
phase separation and communication across leaflets in ternary lipid
bilayers, including saturated lipids with between 12 and 20 carbons
per tail. Coarse-grained molecular dynamics simulations reveal a novel
two-step kinetics due to hydrophobic mismatch, in which the initial
response of the apposed leaflets upon quenching is to increase local
asymmetry (antiregistration), followed by dominance of symmetry (registration)
as the bilayer equilibrates. Antiregistration can become thermodynamically
preferred if domain size is restricted below ∼20 nm, with implications
for the symmetry of rafts and nanoclusters in cell membranes, which
have similar reported sizes. We relate our findings to theory derived
from a semimicroscopic model in which the leaflets experience a “direct”
area-dependent coupling, and an “indirect” coupling
that arises from hydrophobic mismatch and is most important at domain
boundaries. Registered phases differ in composition from antiregistered
phases, consistent with a direct coupling between the leaflets. Increased
hydrophobic mismatch purifies the phases, suggesting that it contributes
to the molecule-level lipid immiscibility. Our results demonstrate
an interplay of competing interleaflet couplings that affect phase
compositions and kinetics, and lead to a length scale that
can influence lateral and transverse bilayer organization within cells.
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Affiliation(s)
- Philip W Fowler
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford, OX1 3QU, U.K
| | - John J Williamson
- Department of Physics, Institute for Soft Matter Synthesis and Metrology, Georgetown University , 37th and O Streets, N.W., Washington, D.C. 20057, United States
| | - Mark S P Sansom
- Department of Biochemistry, University of Oxford , South Parks Road, Oxford, OX1 3QU, U.K
| | - Peter D Olmsted
- Department of Physics, Institute for Soft Matter Synthesis and Metrology, Georgetown University , 37th and O Streets, N.W., Washington, D.C. 20057, United States
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