1
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Batistatou N, Kritzer JA. Comparing Cell Penetration of Biotherapeutics across Human Cell Lines. ACS Chem Biol 2024; 19:1351-1365. [PMID: 38836425 DOI: 10.1021/acschembio.4c00211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
A major obstacle in biotherapeutics development is maximizing cell penetration. Ideally, assays would allow for optimization of cell penetration in the cell type of interest early in the drug development process. However, few assays exist to compare cell penetration across different cell types independent of drug function. In this work, we applied the chloroalkane penetration assay (CAPA) in seven mammalian cell lines as well as primary cells. Careful controls were used to ensure that data could be compared across cell lines. We compared the nuclear penetration of several peptides and drug-like oligonucleotides and saw significant differences among the cell lines. To help explain these differences, we quantified the relative activities of endocytosis pathways in these cell lines and correlated them with the penetration data. Based on these results, we knocked down clathrin in a cell line with an efficient permeability profile and observed reduced penetration of peptides but not oligonucleotides. Finally, we used small-molecule endosomal escape enhancers and observed enhancement of cell penetration of some oligonucleotides, but only in some of the cell lines tested. CAPA data provide valuable points of comparison among different cell lines, including primary cells, for evaluating the cell penetration of various classes of peptides and oligonucleotides.
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Affiliation(s)
- Nefeli Batistatou
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Joshua A Kritzer
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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2
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Wu X, Niu J, Shi Y. Exosomes target HBV-host interactions to remodel the hepatic immune microenvironment. J Nanobiotechnology 2024; 22:315. [PMID: 38840207 PMCID: PMC11151510 DOI: 10.1186/s12951-024-02544-y] [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: 11/21/2023] [Accepted: 05/09/2024] [Indexed: 06/07/2024] Open
Abstract
Chronic hepatitis B poses a significant global burden, modulating immune cells, leading to chronic inflammation and long-term damage. Due to its hepatotropism, the hepatitis B virus (HBV) cannot infect other cells. The mechanisms underlying the intercellular communication among different liver cells in HBV-infected individuals and the immune microenvironment imbalance remain elusive. Exosomes, as important intercellular communication and cargo transportation tools between HBV-infected hepatocytes and immune cells, have been shown to assist in HBV cargo transportation and regulate the immune microenvironment. However, the role of exosomes in hepatitis B has only gradually received attention in recent years. Minimal literature has systematically elaborated on the role of exosomes in reshaping the immune microenvironment of the liver. This review unfolds sequentially based on the biological processes of exosomes: exosomes' biogenesis, release, transport, uptake by recipient cells, and their impact on recipient cells. We delineate how HBV influences the biogenesis of exosomes, utilizing exosomal covert transmission, and reshapes the hepatic immune microenvironment. And based on the characteristics and functions of exosomes, potential applications of exosomes in hepatitis B are summarized and predicted.
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Affiliation(s)
- Xiaojing Wu
- Department of Hepatology, Center of Infectious Diseases and Pathogen Biology, The First Hospital of Jilin University, Changchun, Jilin, 130021, People's Republic of China
| | - Junqi Niu
- Department of Hepatology, Center of Infectious Diseases and Pathogen Biology, The First Hospital of Jilin University, Changchun, Jilin, 130021, People's Republic of China.
| | - Ying Shi
- Department of Hepatology, Center of Infectious Diseases and Pathogen Biology, The First Hospital of Jilin University, Changchun, Jilin, 130021, People's Republic of China.
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3
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Yuan F, Gollapudi S, Day K, Ashby G, Sangani A, Malady B, Wang L, Lafer EM, Huibregtse J, Stachowiak J. Ubiquitin-driven protein condensation initiates clathrin-mediated endocytosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.08.21.554139. [PMID: 37662320 PMCID: PMC10473642 DOI: 10.1101/2023.08.21.554139] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Clathrin-mediated endocytosis is an essential cellular pathway that enables signaling and recycling of transmembrane proteins and lipids. During endocytosis, dozens of cytosolic proteins come together at the plasma membrane, assembling into a highly interconnected network that drives endocytic vesicle biogenesis. Recently, multiple groups have reported that early endocytic proteins form flexible condensates, which provide a platform for efficient assembly of endocytic vesicles. Given the importance of this network in the dynamics of endocytosis, how might cells regulate its stability? Many receptors and endocytic proteins are ubiquitylated, while early endocytic proteins such as Eps15 contain ubiquitin-interacting motifs. Therefore, we examined the influence of ubiquitin on the stability of the early endocytic protein network. In vitro, we found that recruitment of small amounts of polyubiquitin dramatically increased the stability of Eps15 condensates, suggesting that ubiquitylation could nucleate endocytic assemblies. In live cell imaging experiments, a version of Eps15 that lacked the ubiquitin-interacting motif failed to rescue defects in endocytic initiation created by Eps15 knockout. Furthermore, fusion of Eps15 to a deubiquitylase enzyme destabilized nascent endocytic sites within minutes. In both in vitro and live cell settings, dynamic exchange of Eps15 proteins, a hallmark of liquidlike systems, was modulated by Eps15-Ub interactions. These results collectively suggest that ubiquitylation drives assembly of the flexible protein network responsible for catalyzing endocytic events. More broadly, this work illustrates a biophysical mechanism by which ubiquitylated transmembrane proteins at the plasma membrane could regulate the efficiency of endocytic recycling.
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4
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Walker TJ, Reyes-Alvarez E, Hyndman BD, Sugiyama MG, Oliveira LCB, Rekab AN, Crupi MJF, Cabral-Dias R, Guo Q, Dahia PLM, Richardson DS, Antonescu CN, Mulligan LM. Loss of tumor suppressor TMEM127 drives RET-mediated transformation through disrupted membrane dynamics. eLife 2024; 12:RP89100. [PMID: 38687678 PMCID: PMC11060712 DOI: 10.7554/elife.89100] [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] [Indexed: 05/02/2024] Open
Abstract
Internalization from the cell membrane and endosomal trafficking of receptor tyrosine kinases (RTKs) are important regulators of signaling in normal cells that can frequently be disrupted in cancer. The adrenal tumor pheochromocytoma (PCC) can be caused by activating mutations of the rearranged during transfection (RET) receptor tyrosine kinase, or inactivation of TMEM127, a transmembrane tumor suppressor implicated in trafficking of endosomal cargos. However, the role of aberrant receptor trafficking in PCC is not well understood. Here, we show that loss of TMEM127 causes wildtype RET protein accumulation on the cell surface, where increased receptor density facilitates constitutive ligand-independent activity and downstream signaling, driving cell proliferation. Loss of TMEM127 altered normal cell membrane organization and recruitment and stabilization of membrane protein complexes, impaired assembly, and maturation of clathrin-coated pits, and reduced internalization and degradation of cell surface RET. In addition to RTKs, TMEM127 depletion also promoted surface accumulation of several other transmembrane proteins, suggesting it may cause global defects in surface protein activity and function. Together, our data identify TMEM127 as an important determinant of membrane organization including membrane protein diffusability and protein complex assembly and provide a novel paradigm for oncogenesis in PCC where altered membrane dynamics promotes cell surface accumulation and constitutive activity of growth factor receptors to drive aberrant signaling and promote transformation.
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Affiliation(s)
- Timothy J Walker
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Eduardo Reyes-Alvarez
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Brandy D Hyndman
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Michael G Sugiyama
- Department of Chemistry and Biology, Toronto Metropolitan UniversityTorontoCanada
| | - Larissa CB Oliveira
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Aisha N Rekab
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Mathieu JF Crupi
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
| | - Rebecca Cabral-Dias
- Department of Chemistry and Biology, Toronto Metropolitan UniversityTorontoCanada
| | - Qianjin Guo
- Division of Hematology and Medical Oncology, University of Texas Health Science CenterSan AntonioUnited States
| | - Patricia LM Dahia
- Division of Hematology and Medical Oncology, University of Texas Health Science CenterSan AntonioUnited States
| | - Douglas S Richardson
- Department of Molecular and Cellular Biology, Harvard Center for Biological Imaging, Scientific Image Analysis Group, Harvard UniversityCambridgeUnited States
| | - Costin N Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan UniversityTorontoCanada
| | - Lois M Mulligan
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s UniversityKingstonCanada
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5
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Cano I, Wild M, Gupta U, Chaudhary S, Ng YSE, Saint-Geniez M, D'Amore PA, Hu Z. Endomucin selectively regulates vascular endothelial growth factor receptor-2 endocytosis through its interaction with AP2. Cell Commun Signal 2024; 22:225. [PMID: 38605348 PMCID: PMC11007909 DOI: 10.1186/s12964-024-01606-w] [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: 11/28/2023] [Accepted: 04/05/2024] [Indexed: 04/13/2024] Open
Abstract
The endothelial glycocalyx, located at the luminal surface of the endothelium, plays an important role in the regulation of leukocyte adhesion, vascular permeability, and vascular homeostasis. Endomucin (EMCN), a component of the endothelial glycocalyx, is a mucin-like transmembrane glycoprotein selectively expressed by venous and capillary endothelium. We have previously shown that knockdown of EMCN impairs retinal vascular development in vivo and vascular endothelial growth factor 165 isoform (VEGF165)-induced cell migration, proliferation, and tube formation by human retinal endothelial cells in vitro and that EMCN is essential for VEGF165-stimulated clathrin-mediated endocytosis and signaling of VEGF receptor 2 (VEGFR2). Clathrin-mediated endocytosis is an essential step in receptor signaling and is of paramount importance for a number of receptors for growth factors involved in angiogenesis. In this study, we further investigated the molecular mechanism underlying EMCN's involvement in the regulation of VEGF-induced endocytosis. In addition, we examined the specificity of EMCN's role in angiogenesis-related cell surface receptor tyrosine kinase endocytosis and signaling. We identified that EMCN interacts with AP2 complex, which is essential for clathrin-mediated endocytosis. Lack of EMCN did not affect clathrin recruitment to the AP2 complex following VEGF stimulation, but it is necessary for the interaction between VEGFR2 and the AP2 complex during endocytosis. EMCN does not inhibit VEGFR1 and FGFR1 internalization or their downstream activities since EMCN interacts with VEGFR2 but not VEGFR1 or FGFR1. Additionally, EMCN also regulates VEGF121-induced VEGFR2 phosphorylation and internalization.
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Affiliation(s)
- Issahy Cano
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- Present affiliation: Department of Molecular Medicine, Cornell University, Ithaca, NY, USA
| | - Melissa Wild
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Urvi Gupta
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Suman Chaudhary
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | - Yin Shan Eric Ng
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- Present Affiliation: EyeBiotech, London, UK
| | - Magali Saint-Geniez
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- Present affiliation: Novartis Institutes for Biomedical Research, Cambridge, MA, USA
| | - Patricia A D'Amore
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Zhengping Hu
- Schepens Eye Research Institute of Massachusetts Eye and Ear, Boston, MA, USA.
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA.
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6
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Walker TJ, Reyes-Alvarez E, Hyndman BD, Sugiyama MG, Oliveira LC, Rekab AN, Crupi MJ, Cabral-Dias R, Guo Q, Dahia PL, Richardson DS, Antonescu CN, Mulligan LM. Loss of Tumour Suppressor TMEM127 Drives RET-mediated Transformation Through Disrupted Membrane Dynamics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.06.28.546955. [PMID: 37425958 PMCID: PMC10327082 DOI: 10.1101/2023.06.28.546955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Internalization from the cell membrane and endosomal trafficking of receptor tyrosine kinases (RTK) are important regulators of signaling in normal cells that can frequently be disrupted in cancer. The adrenal tumour pheochromocytoma (PCC) can be caused by activating mutations of the RET receptor tyrosine kinase, or inactivation of TMEM127, a transmembrane tumour suppressor implicated in trafficking of endosomal cargos. However, the role of aberrant receptor trafficking in PCC is not well understood. Here, we show that loss of TMEM127 causes wildtype RET protein accumulation on the cell surface, where increased receptor density facilitates constitutive ligand-independent activity and downstream signaling, driving cell proliferation. Loss of TMEM127 altered normal cell membrane organization and recruitment and stabilization of membrane protein complexes, impaired assembly, and maturation of clathrin coated pits, and reduced internalization and degradation of cell surface RET. In addition to RTKs, TMEM127 depletion also promoted surface accumulation of several other transmembrane proteins, suggesting it may cause global defects in surface protein activity and function. Together, our data identify TMEM127 as an important determinant of membrane organization including membrane protein diffusability, and protein complex assembly and provide a novel paradigm for oncogenesis in PCC where altered membrane dynamics promotes cell surface accumulation and constitutive activity of growth factor receptors to drive aberrant signaling and promote transformation.
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Affiliation(s)
- Timothy J. Walker
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Eduardo Reyes-Alvarez
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Brandy D. Hyndman
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Michael G. Sugiyama
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, ON, M5B 2K3, Canada
| | - Larissa C.B. Oliveira
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Aisha N. Rekab
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Mathieu J.F. Crupi
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
| | - Rebecca Cabral-Dias
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, ON, M5B 2K3, Canada
| | - Qianjin Guo
- Division of Hematology and Medical Oncology, University of Texas Health Science Center, San Antonio, Texas, 78229, United States
| | - Patricia L.M. Dahia
- Division of Hematology and Medical Oncology, University of Texas Health Science Center, San Antonio, Texas, 78229, United States
| | - Douglas S. Richardson
- Department of Molecular and Cellular Biology; Harvard Center for Biological Imaging; Scientific Image Analysis Group, Harvard University, Cambridge, MA, USA
| | - Costin N. Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, ON, M5B 2K3, Canada
| | - Lois M. Mulligan
- Division of Cancer Biology and Genetics, Cancer Research Institute, and Department of Pathology and Molecular Medicine, Queen’s University, Kingston, ON, K7L 3N6, Canada
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7
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Ashby G, Keng KE, Hayden CC, Stachowiak JC. A live cell imaging-based assay for tracking particle uptake by clathrin-mediated endocytosis. Methods Enzymol 2024; 700:413-454. [PMID: 38971609 DOI: 10.1016/bs.mie.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2024]
Abstract
A popular strategy for therapeutic delivery to cells and tissues is to encapsulate therapeutics inside particles that cells internalize via endocytosis. The efficacy of particle uptake by endocytosis is often studied in bulk using flow cytometry and Western blot analysis and confirmed using confocal microscopy. However, these techniques do not reveal the detailed dynamics of particle internalization and how the inherent heterogeneity of many types of particles may impact their endocytic uptake. Toward addressing these gaps, here we present a live-cell imaging-based method that utilizes total internal reflection fluorescence microscopy to track the uptake of a large ensemble of individual particles in parallel, as they interact with the cellular endocytic machinery. To analyze the resulting data, we employ an open-source tracking algorithm in combination with custom data filters. This analysis reveals the dynamic interactions between particles and endocytic structures, which determine the probability of particle uptake. In particular, our approach can be used to examine how variations in the physical properties of particles (size, targeting, rigidity), as well as heterogeneity within the particle population, impact endocytic uptake. These data impact the design of particles toward more selective and efficient delivery of therapeutics to cells.
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Affiliation(s)
- Grant Ashby
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Kayla E Keng
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Carl C Hayden
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Jeanne C Stachowiak
- Department of Biomedical Engineering, The University of Texas at Austin; Department of Chemical Engineering, The University of Texas at Austin.
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8
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Liu J, Guo Z, Li W, Zhang X, Liang C, Cui Z. Packaging Quantum Dots in Viral Particles via a Strep-tag II/Streptavidin System for Single-Virus Tracking. NANO LETTERS 2024; 24:2821-2830. [PMID: 38407052 DOI: 10.1021/acs.nanolett.3c04570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Single-virus tracking provides a powerful tool for studying virus infection with high spatiotemporal resolution. Quantum dots (QDs) are used to label and track viral particles due to their brightness and photostability. However, labeling viral particles with QDs is not easy. We developed a new method for labeling viral particles with QDs by using the Strep-tag II/streptavidin system. In this method, QDs were site-specifically ligated to viral proteins in live cells and then packaged into viral-like particles (VLPs) of tick-borne encephalitis virus (TBEV) and Ebola virus during viral assembly. With TBEV VLP-QDs, we tracked the clathrin-mediated endocytic entry of TBEV and studied its intracellular dynamics at the single-particle level. Our Strep-tag II/streptavidin labeling procedure eliminates the need for BirA protein expression or biotin addition, providing a simple and general method for site-specifically labeling viral particles with QDs for single-virus tracking.
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Affiliation(s)
- Ji Liu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhengyuan Guo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wei Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Xiaowei Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Cuiqin Liang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Zongqiang Cui
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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9
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Yu Y, Ni M, Zheng Y, Huang Y. Airway epithelial-targeted nanoparticle reverses asthma in inhalation therapy. J Control Release 2024; 367:223-234. [PMID: 38272396 DOI: 10.1016/j.jconrel.2024.01.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/26/2023] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Despite extensive research on corticosteroids for treating asthma, their short residence time in the lungs has limited their therapeutic effects in vivo. Nanoparticles have been widely investigated for inhaled drug delivery due to their potential benefits in prolonging drugs' residence time in the lungs. However, the retention of nanoparticles may be limited by mucus and ciliated epithelium clearance mechanisms in the airway. Herein, we anchored a neonatal-Fc-receptor-targeted peptide (FcBP) onto "mucus-penetrating" polyethylene glycol (PEG) nanoparticles (PEG-NP). Interestingly, the mucus-permeability of PEG-NP was not impaired by FcBP-functionalization. Moreover, FcBP modification enhanced cellular internalization and exocytosis via specific receptor-mediated processes, which subsequently ameliorated transepithelial transport and prolonged pulmonary retention. Importantly, after loading dexamethasone, FcBP-functionalization could effectively help nanoparticles cross the airway epithelial layer and be endocytosed by inflammatory cells, resulting in a marked decrease in inflammatory cytokines. Finally, FcBP modification significantly enhanced the therapeutic effect of dexamethasone-loaded nanoparticles in asthma mice. This study demonstrates that FcBP-functionalized PEG-NP can overcome multiple obstacles in the airway to prolong the pulmonary retention of drugs, providing a promising strategy for inhalation therapy.
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Affiliation(s)
- Yinglan Yu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Mingjie Ni
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yaxian Zheng
- Department of Pharmacy, Affiliated Hospital of Southwest Jiaotong University, The Third People's Hospital of Chengdu, Chengdu 610031, Sichuan, China; Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
| | - Yuan Huang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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10
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Carter T, Iqbal M. The Influenza A Virus Replication Cycle: A Comprehensive Review. Viruses 2024; 16:316. [PMID: 38400091 PMCID: PMC10892522 DOI: 10.3390/v16020316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/15/2024] [Accepted: 02/17/2024] [Indexed: 02/25/2024] Open
Abstract
Influenza A virus (IAV) is the primary causative agent of influenza, colloquially called the flu. Each year, it infects up to a billion people, resulting in hundreds of thousands of human deaths, and causes devastating avian outbreaks with worldwide losses worth billions of dollars. Always present is the possibility that a highly pathogenic novel subtype capable of direct human-to-human transmission will spill over into humans, causing a pandemic as devastating if not more so than the 1918 influenza pandemic. While antiviral drugs for influenza do exist, they target very few aspects of IAV replication and risk becoming obsolete due to antiviral resistance. Antivirals targeting other areas of IAV replication are needed to overcome this resistance and combat the yearly epidemics, which exact a serious toll worldwide. This review aims to summarise the key steps in the IAV replication cycle, along with highlighting areas of research that need more focus.
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Affiliation(s)
- Toby Carter
- The Pirbright Institute, Ash Road, Pirbright, Woking GU24 0NF, UK;
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11
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Niraula G, Wu C, Yu X, Malik S, Verma DS, Yang R, Zhao B, Ding S, Zhang W, Sharma SK. The Curie temperature: a key playmaker in self-regulated temperature hyperthermia. J Mater Chem B 2024; 12:286-331. [PMID: 37955235 DOI: 10.1039/d3tb01437a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
The Curie temperature is an important thermo-characteristic of magnetic materials, which causes a phase transition from ferromagnetic to paramagnetic by changing the spontaneous re-arrangement of their spins (intrinsic magnetic mechanism) due to an increase in temperature. The self-control-temperature (SCT) leads to the conversion of ferro/ferrimagnetic materials to paramagnetic materials, which can extend the temperature-based applications of these materials from industrial nanotechnology to the biomedical field. In this case, magnetic induction hyperthermia (MIH) with self-control-temperature has been proposed as a physical thermo-therapeutic method for killing cancer tumors in a biologically safe environment. Specifically, the thermal source of MIH is magnetic nanoparticles (MNPs), and thus their biocompatibility and Curie temperature are two important properties, where the former is required for their clinical application, while the latter acts as a switch to automatically control the temperature of MIH. In this review, we focus on the Curie temperature of magnetic materials and provide a complete overview beginning with basic magnetism and its inevitable relation with Curie's law, theoretical prediction and experimental measurement of the Curie temperature. Furthermore, we discuss the significance, evolution from different types of alloys to ferrites and impact of the shape, size, and concentration of particles on the Curie temperature considering the proposed SCT-based MIH together with their biocompatibility. Also, we highlight the thermal efficiency of MNPs in destroying tumor cells and the significance of a low Curie temperature. Finally, the challenges, concluding remarks, and future perspectives in promoting self-control-temperature based MIH to clinical application are discussed.
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Affiliation(s)
- Gopal Niraula
- Department of Physics, Federal University of Maranhão, São Luís, 65080-805, Brazil.
| | - Chengwei Wu
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Xiaogang Yu
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Sonia Malik
- LBLGC, University of Orléans, 1 Rue de Chartres-BP 6759, 45067 Orleans, France
| | - Dalip Singh Verma
- Department of Physics & Astronomical Science, Central University of Himachal Pradesh, Dharamshala, 176215, India
| | - Rengpeng Yang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Boxiong Zhao
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Shuaiwen Ding
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Wei Zhang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, P. R. China.
| | - Surender Kumar Sharma
- Department of Physics, Federal University of Maranhão, São Luís, 65080-805, Brazil.
- Department of Physics, Central University of Punjab, Bathinda, 151401, India
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12
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Iwamoto Y, Ye AA, Shirazinejad C, Hurley JH, Drubin DG. Kinetic investigation reveals an HIV-1 Nef-dependent increase in AP-2 recruitment and productivity at endocytic sites. Mol Biol Cell 2024; 35:ar9. [PMID: 37938925 PMCID: PMC10881171 DOI: 10.1091/mbc.e23-04-0126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 10/24/2023] [Accepted: 11/02/2023] [Indexed: 11/10/2023] Open
Abstract
The HIV-1 accessory protein Nef hijacks clathrin adaptors to degrade or mislocalize host proteins involved in antiviral defenses. Here, using quantitative live-cell microscopy in genome-edited Jurkat cells, we investigate the impact of Nef on clathrin-mediated endocytosis (CME), a major pathway for membrane protein internalization in mammalian cells. Nef is recruited to CME sites on the plasma membrane, and this recruitment is associated with an increase in the recruitment and lifetime of the CME coat protein AP-2 and the late-arriving CME protein dynamin2. Furthermore, we find that CME sites that recruit Nef are more likely to recruit dynamin2 and transferrin, suggesting that Nef recruitment to CME sites promotes site maturation to ensure high efficiency in host protein downregulation. Implications of these observations for HIV-1 infection are discussed.
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Affiliation(s)
- Yuichiro Iwamoto
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
| | - Anna A. Ye
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
| | - Cyna Shirazinejad
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720
| | - James H. Hurley
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
- California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, CA 94720
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720
| | - David G. Drubin
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720
- California Institute for Quantitative Biosciences, University of California, Berkeley, Berkeley, CA 94720
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720
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13
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Kasberg W, Luong P, Swift KA, Audhya A. Nutrient deprivation alters the rate of COPII subunit recruitment at ER subdomains to tune secretory protein transport. Nat Commun 2023; 14:8140. [PMID: 38066006 PMCID: PMC10709328 DOI: 10.1038/s41467-023-44002-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Co-assembly of the multilayered coat protein complex II (COPII) with the Sar1 GTPase at subdomains of the endoplasmic reticulum (ER) enables secretory cargoes to be concentrated efficiently within nascent transport intermediates, which subsequently deliver their contents to ER-Golgi intermediate compartments. Here, we define the spatiotemporal accumulation of native COPII subunits and secretory cargoes at ER subdomains under differing nutrient availability conditions using a combination of CRISPR/Cas9-mediated genome editing and live cell imaging. Our findings demonstrate that the rate of inner COPII coat recruitment serves as a determinant for the pace of cargo export, irrespective of COPII subunit expression levels. Moreover, increasing inner COPII coat recruitment kinetics is sufficient to rescue cargo trafficking deficits caused by acute nutrient limitation. Our findings are consistent with a model in which the rate of inner COPII coat addition acts as an important control point to regulate cargo export from the ER.
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Affiliation(s)
- William Kasberg
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53706, USA
| | - Peter Luong
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53706, USA
| | - Kevin A Swift
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53706, USA
| | - Anjon Audhya
- Department of Biomolecular Chemistry, University of Wisconsin School of Medicine and Public Health, Madison, WI, 53706, USA.
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14
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So CW, Sourisseau M, Sarwar S, Evans MJ, Randall G. Roles of epidermal growth factor receptor, claudin-1 and occludin in multi-step entry of hepatitis C virus into polarized hepatoma spheroids. PLoS Pathog 2023; 19:e1011887. [PMID: 38157366 PMCID: PMC10756512 DOI: 10.1371/journal.ppat.1011887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/06/2023] [Indexed: 01/03/2024] Open
Abstract
The multi-step process of hepatitis C virus (HCV) entry is facilitated by various host factors, including epidermal growth factor receptor (EGFR) and the tight junction proteins claudin-1 (CLDN1) and occludin (OCLN), which are thought to function at later stages of the HCV entry process. Using single particle imaging of HCV infection of polarized hepatoma spheroids, we observed that EGFR performs multiple functions in HCV entry, both phosphorylation-dependent and -independent. We previously observed, and in this study confirmed, that EGFR is not required for HCV migration to the tight junction. EGFR is required for the recruitment of clathrin to HCV in a phosphorylation-independent manner. EGFR phosphorylation is required for virion internalization at a stage following the recruitment of clathrin. HCV entry activates the RAF-MEK-ERK signaling pathway downstream of EGFR phosphorylation. This signaling pathway regulates the sorting and maturation of internalized HCV into APPL1- and EEA1-associated early endosomes, which form the site of virion uncoating. The tight junction proteins, CLDN1 and OCLN, function at two distinct stages of HCV entry. Despite its appreciated function as a "late receptor" in HCV entry, CLDN1 is required for efficient HCV virion accumulation at the tight junction. Huh-7.5 cells lacking CLDN1 accumulate HCV virions primarily at the initial basolateral surface. OCLN is required for the late stages of virion internalization. This study produced further insight into the unusually complex HCV endocytic process.
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Affiliation(s)
- Chui-Wa So
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
| | - Marion Sourisseau
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Shamila Sarwar
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
| | - Matthew J. Evans
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Glenn Randall
- Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America
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15
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Lan Y, Zou S, Wang W, Chen Q, Zhu Y. Progress in cancer neuroscience. MedComm (Beijing) 2023; 4:e431. [PMID: 38020711 PMCID: PMC10665600 DOI: 10.1002/mco2.431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 11/02/2023] [Accepted: 11/08/2023] [Indexed: 12/01/2023] Open
Abstract
Cancer of the central nervous system (CNS) can crosstalk systemically and locally in the tumor microenvironment and has become a topic of attention for tumor initiation and advancement. Recently studied neuronal and cancer interaction fundamentally altered the knowledge about glioma and metastases, indicating how cancers invade complex neuronal networks. This review systematically discussed the interactions between neurons and cancers and elucidates new therapeutic avenues. We have overviewed the current understanding of direct or indirect communications of neuronal cells with cancer and the mechanisms associated with cancer invasion. Besides, tumor-associated neuronal dysfunction and the influence of cancer therapies on the CNS are highlighted. Furthermore, interactions between peripheral nervous system and various cancers have also been discussed separately. Intriguingly and importantly, it cannot be ignored that exosomes could mediate the "wireless communications" between nervous system and cancer. Finally, promising future strategies targeting neuronal-brain tumor interactions were reviewed. A great deal of work remains to be done to elucidate the neuroscience of cancer, and future more research should be directed toward clarifying the precise mechanisms of cancer neuroscience, which hold enormous promise to improve outcomes for a wide range of malignancies.
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Affiliation(s)
- Yu‐Long Lan
- Department of NeurosurgerySecond Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangChina
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological DiseasesHangzhouZhejiangChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
| | - Shuang Zou
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical ScienceZhejiang Chinese Medical UniversityHangzhouChina
| | - Wen Wang
- Department of NeurosurgeryBeijing Tiantan Hospital, Capital Medical UniversityBeijingChina
| | - Qi Chen
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical ScienceZhejiang Chinese Medical UniversityHangzhouChina
| | - Yongjian Zhu
- Department of NeurosurgerySecond Affiliated Hospital, School of Medicine, Zhejiang UniversityHangzhouZhejiangChina
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological DiseasesHangzhouZhejiangChina
- Clinical Research Center for Neurological Diseases of Zhejiang ProvinceHangzhouChina
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16
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Ashby G, Keng KE, Hayden CC, Gollapudi S, Houser JR, Jamal S, Stachowiak JC. Selective Endocytic Uptake of Targeted Liposomes Occurs within a Narrow Range of Liposome Diameters. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49988-50001. [PMID: 37862704 PMCID: PMC11165932 DOI: 10.1021/acsami.3c09399] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
Cell surface receptors facilitate signaling and nutrient uptake. These processes are dynamic, requiring receptors to be actively recycled by endocytosis. Due to their differential expression in disease states, receptors are often the target of drug-carrier particles, which are adorned with ligands that bind specifically to receptors. These targeted particles are taken into the cell by multiple routes of internalization, where the best-characterized pathway is clathrin-mediated endocytosis. Most studies of particle uptake have utilized bulk assays rather than observing individual endocytic events. As a result, the detailed mechanisms of particle uptake remain obscure. To address this gap, we employed a live-cell imaging approach to study the uptake of individual liposomes as they interact with clathrin-coated structures. By tracking individual internalization events, we find that the size of liposomes rather than the density of the ligands on their surfaces primarily determines their probability of uptake. Interestingly, targeting has the greatest impact on endocytosis of liposomes of intermediate diameters, with the smallest and largest liposomes being internalized or excluded, respectively, regardless of whether they are targeted. These findings, which highlight a previously unexplored limitation of targeted delivery, can be used to design more effective drug carriers.
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Affiliation(s)
- Grant Ashby
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Kayla E. Keng
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Carl C. Hayden
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Sadhana Gollapudi
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Justin R. Houser
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Sabah Jamal
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
| | - Jeanne C. Stachowiak
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
- Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas, 78712, United States of America
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17
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Tanaka H, Funahashi J, Hirano T. Live-cell imaging of endocytosed synaptophysin around individual hippocampal presynaptic active zones. Front Cell Neurosci 2023; 17:1277729. [PMID: 37927445 PMCID: PMC10620501 DOI: 10.3389/fncel.2023.1277729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/06/2023] [Indexed: 11/07/2023] Open
Abstract
In presynaptic terminals 4 types of endocytosis, kiss-and-run, clathrin-mediated, bulk and ultrafast endocytosis have been reported to maintain repetitive exocytosis of neurotransmitter. However, detailed characteristics and relative contribution of each type of endocytosis still need to be determined. Our previous live-cell imaging study demonstrated individual exocytosis events of synaptic vesicle within an active-zone-like membrane (AZLM) formed on glass using synaptophysin tagged with a pH-sensitive fluorescent protein. On the other hand, individual endocytosis events of postsynaptic receptors were recorded with a rapid extracellular pH exchange method. Combining these methods, here we live-cell imaged endocytosed synaptophysin with total internal reflection fluorescence microscopy in rat hippocampal culture preparations. Clathrin-dependent and -independent endocytosis, which was seemingly bulk endocytosis, occurred within several seconds after electrical stimulation at multiple locations around AZLM at room temperature, with the locations varying trial to trial. The contribution of clathrin-independent endocytosis was more prominent when the number of stimulation pulses was large. The skewness of synaptophysin distribution in intracellular vesicles became smaller after addition of a clathrin inhibitor, which suggests that clathrin-dependent endocytosis concentrates synaptophysin. Ultrafast endocytosis was evident immediately after stimulation only at near physiological temperature and was the predominant endocytosis when the number of stimulation pulses was small.
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Affiliation(s)
- Hiromitsu Tanaka
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
- Department of Developmental Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Junichiro Funahashi
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Tomoo Hirano
- Department of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
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18
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Szewczyk-Roszczenko OK, Roszczenko P, Shmakova A, Finiuk N, Holota S, Lesyk R, Bielawska A, Vassetzky Y, Bielawski K. The Chemical Inhibitors of Endocytosis: From Mechanisms to Potential Clinical Applications. Cells 2023; 12:2312. [PMID: 37759535 PMCID: PMC10527932 DOI: 10.3390/cells12182312] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Endocytosis is one of the major ways cells communicate with their environment. This process is frequently hijacked by pathogens. Endocytosis also participates in the oncogenic transformation. Here, we review the approaches to inhibit endocytosis, discuss chemical inhibitors of this process, and discuss potential clinical applications of the endocytosis inhibitors.
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Affiliation(s)
| | - Piotr Roszczenko
- Department of Biotechnology, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (P.R.); (A.B.)
| | - Anna Shmakova
- CNRS, UMR 9018, Institut Gustave Roussy, Université Paris-Saclay, 94800 Villejuif, France;
| | - Nataliya Finiuk
- Department of Regulation of Cell Proliferation and Apoptosis, Institute of Cell Biology of National Academy of Sciences of Ukraine, Drahomanov 14/16, 79005 Lviv, Ukraine;
| | - Serhii Holota
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine; (S.H.); (R.L.)
| | - Roman Lesyk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine; (S.H.); (R.L.)
| | - Anna Bielawska
- Department of Biotechnology, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland; (P.R.); (A.B.)
| | - Yegor Vassetzky
- CNRS, UMR 9018, Institut Gustave Roussy, Université Paris-Saclay, 94800 Villejuif, France;
| | - Krzysztof Bielawski
- Department of Synthesis and Technology of Drugs, Medical University of Bialystok, Kilinskiego 1, 15-089 Bialystok, Poland;
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19
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Richards CJ, Burgers TCQ, Vlijm R, Roos WH, Åberg C. Rapid Internalization of Nanoparticles by Human Cells at the Single Particle Level. ACS NANO 2023; 17:16517-16529. [PMID: 37642490 PMCID: PMC10510712 DOI: 10.1021/acsnano.3c01124] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 08/17/2023] [Indexed: 08/31/2023]
Abstract
Nanoparticle uptake by cells has been studied for applications both in nanomedicine and in nanosafety. While the majority of studies have focused on the biological mechanisms underlying particle internalization, less attention has been given to questions of a more quantitative nature, such as how many nanoparticles enter cells and how rapidly they do so. To address this, we exposed human embryonic kidney cells to 40-200 nm carboxylated polystyrene nanoparticles and the particles were observed by live-cell confocal and super-resolution stimulated emission depletion fluorescence microscopy. How long a particle remained at the cell membrane after adsorbing onto it was monitored, distinguishing whether the particle ultimately desorbed again or was internalized by the cell. We found that the majority of particles desorb, but interestingly, most of the particles that are internalized do so within seconds, independently of particle size. As this is faster than typical endocytic mechanisms, we interpret this observation as the particles entering via an endocytic event that is already taking place (as opposed to directly triggering their own uptake) or possibly via an as yet uncharacterized endocytic route. Aside from the rapidly internalizing particles, a minority of particles remain at the membrane for tens of seconds to minutes before desorbing or being internalized. We also followed particles after cell internalization, observing particles that appeared to exit the cell, sometimes as rapidly as within tens of seconds. Overall, our results provide quantitative information about nanoparticle cell internalization times and early trafficking.
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Affiliation(s)
- Ceri J. Richards
- Pharmaceutical
Analysis, Groningen Research Institute of Pharmacy, University of Groningen, 9713 AV Groningen, The Netherlands
- Molecular
Biophysics, Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Thomas C. Q. Burgers
- Molecular
Biophysics, Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Rifka Vlijm
- Molecular
Biophysics, Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Wouter H. Roos
- Molecular
Biophysics, Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Christoffer Åberg
- Pharmaceutical
Analysis, Groningen Research Institute of Pharmacy, University of Groningen, 9713 AV Groningen, The Netherlands
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20
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Leblanc JA, Sugiyama MG, Antonescu CN, Brown AI. Quantitative modeling of EGF receptor ligand discrimination via internalization proofreading. Phys Biol 2023; 20:056008. [PMID: 37557183 DOI: 10.1088/1478-3975/aceecd] [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: 05/11/2023] [Accepted: 08/09/2023] [Indexed: 08/11/2023]
Abstract
The epidermal growth factor receptor (EGFR) is a central regulator of cell physiology that is stimulated by multiple distinct ligands. Although ligands bind to EGFR while the receptor is exposed on the plasma membrane, EGFR incorporation into endosomes following receptor internalization is an important aspect of EGFR signaling, with EGFR internalization behavior dependent upon the type of ligand bound. We develop quantitative modeling for EGFR recruitment to and internalization from clathrin domains, focusing on how internalization competes with ligand unbinding from EGFR. We develop two model versions: a kinetic model with EGFR behavior described as transitions between discrete states and a spatial model with EGFR diffusion to circular clathrin domains. We find that a combination of spatial and kinetic proofreading leads to enhanced EGFR internalization ratios in comparison to unbinding differences between ligand types. Various stages of the EGFR internalization process, including recruitment to and internalization from clathrin domains, modulate the internalization differences between receptors bound to different ligands. Our results indicate that following ligand binding, EGFR may encounter multiple clathrin domains before successful recruitment and internalization. The quantitative modeling we have developed describes competition between EGFR internalization and ligand unbinding and the resulting proofreading.
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Affiliation(s)
- Jaleesa A Leblanc
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Michael G Sugiyama
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Costin N Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Aidan I Brown
- Department of Physics, Toronto Metropolitan University, Toronto, Ontario, Canada
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21
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Cresens C, Solís-Fernández G, Tiwari A, Nuyts R, Hofkens J, Barderas R, Rocha S. Flat clathrin lattices are linked to metastatic potential in colorectal cancer. iScience 2023; 26:107327. [PMID: 37539031 PMCID: PMC10393769 DOI: 10.1016/j.isci.2023.107327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/09/2023] [Accepted: 07/05/2023] [Indexed: 08/05/2023] Open
Abstract
Clathrin assembles at the cells' plasma membrane in a multitude of clathrin-coated structures (CCSs). Among these are flat clathrin lattices (FCLs), alternative clathrin structures that have been found in specific cell types, including cancer cells. Here we show that these structures are also present in different colorectal cancer (CRC) cell lines, and that they are extremely stable with lifetimes longer than 8 h. By combining cell models representative of CRC metastasis with advanced fluorescence imaging and analysis, we discovered that the metastatic potential of CRC is associated with an aberrant membranous clathrin distribution, resulting in a higher prevalence of FCLs in cells with a higher metastatic potential. These findings suggest that clathrin organization might play an important yet unexplored role in cancer metastasis.
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Affiliation(s)
- Charlotte Cresens
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Guillermo Solís-Fernández
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Astha Tiwari
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Rik Nuyts
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Johan Hofkens
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Department of Molecular Spectroscopy, Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Rodrigo Barderas
- Chronic Disease Programme, UFIEC, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Susana Rocha
- Molecular Imaging and Photonics Division, Chemistry Department, Faculty of Sciences, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
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22
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Hakanpää L, Abouelezz A, Lenaerts AS, Culfa S, Algie M, Bärlund J, Katajisto P, McMahon H, Almeida-Souza L. Reticular adhesions are assembled at flat clathrin lattices and opposed by active integrin α5β1. J Cell Biol 2023; 222:e202303107. [PMID: 37233325 PMCID: PMC10225744 DOI: 10.1083/jcb.202303107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/03/2023] [Accepted: 05/15/2023] [Indexed: 05/27/2023] Open
Abstract
Reticular adhesions (RAs) consist of integrin αvβ5 and harbor flat clathrin lattices (FCLs), long-lasting structures with similar molecular composition as clathrin-mediated endocytosis (CME) carriers. Why FCLs and RAs colocalize is not known. Here, we show that RAs are assembled at FCLs in a process controlled by fibronectin (FN) and its receptor, integrin α5β1. We observed that cells on FN-rich matrices displayed fewer FCLs and RAs. CME machinery inhibition abolished RAs and live-cell imaging showed that RA establishment requires FCL coassembly. The inhibitory activity of FN was mediated by the activation of integrin α5β1 at Tensin1-positive fibrillar adhesions. Conventionally, endocytosis disassembles cellular adhesions by internalizing their components. Our results present a novel paradigm in the relationship between these two processes by showing that endocytic proteins can actively function in the assembly of cell adhesions. Furthermore, we show this novel adhesion assembly mechanism is coupled to cell migration via unique crosstalk between cell-matrix adhesions.
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Affiliation(s)
- Laura Hakanpää
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Amr Abouelezz
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - An-Sofie Lenaerts
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Seyda Culfa
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Michael Algie
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Jenny Bärlund
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Pekka Katajisto
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | | | - Leonardo Almeida-Souza
- Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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23
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Wang X, Li Y, Liu A, Padilla R, Lee DM, Kim D, Mettlen M, Chen Z, Schmid SL, Danuser G. Endocytosis gated by emergent properties of membrane-clathrin interactions. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.02.551737. [PMID: 37577632 PMCID: PMC10418234 DOI: 10.1101/2023.08.02.551737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Clathrin-mediated endocytosis (CME), the major cellular entry pathway, starts when clathrin assembles on the plasma membrane into clathrin-coated pits (CCPs). Two populations of CCPs are detected within the same cell: 'productive' CCPs that invaginate and pinch off, forming clathrin-coated vesicles (CCVs) [1, 2], and 'abortive' CCPs [3, 4, 5] that prematurely disassemble. The mechanisms of gating between these two populations and their relations to the functions of dozens of early-acting endocytic accessory proteins (EAPs) [5, 6, 7, 8, 9] have remained elusive. Here, we use experimentally-guided modeling to integrate the clathrin machinery and membrane mechanics in a single dynamical system. We show that the split between the two populations is an emergent property of this system, in which a switch between an Open state and a Closed state follows from the competition between the chemical energy of the clathrin basket and the mechanical energy of membrane bending. In silico experiments revealed an abrupt transition between the two states that acutely depends on the strength of the clathrin basket. This critical strength is lowered by membrane-bending EAPs [10, 11, 12]. Thus, CME is poised to be shifted between abortive and productive events by small changes in membrane curvature and/or coat stability. This model clarifies the workings of a putative endocytic checkpoint whose existence was previously proposed based on statistical analyses of the lifetime distributions of CCPs [4, 13]. Overall, a mechanistic framework is established to elucidate the diverse and redundant functions of EAPs in regulating CME progression.
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Sun Z, Huang J, Fishelson Z, Wang C, Zhang S. Cell-Penetrating Peptide-Based Delivery of Macromolecular Drugs: Development, Strategies, and Progress. Biomedicines 2023; 11:1971. [PMID: 37509610 PMCID: PMC10377493 DOI: 10.3390/biomedicines11071971] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Cell-penetrating peptides (CPPs), developed for more than 30 years, are still being extensively studied due to their excellent delivery performance. Compared with other delivery vehicles, CPPs hold promise for delivering different types of drugs. Here, we review the development process of CPPs and summarize the composition and classification of the CPP-based delivery systems, cellular uptake mechanisms, influencing factors, and biological barriers. We also summarize the optimization routes of CPP-based macromolecular drug delivery from stability and targeting perspectives. Strategies for enhanced endosomal escape, which prolong its half-life in blood, improved targeting efficiency and stimuli-responsive design are comprehensively summarized for CPP-based macromolecule delivery. Finally, after concluding the clinical trials of CPP-based drug delivery systems, we extracted the necessary conditions for a successful CPP-based delivery system. This review provides the latest framework for the CPP-based delivery of macromolecular drugs and summarizes the optimized strategies to improve delivery efficiency.
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Affiliation(s)
- Zhe Sun
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Jinhai Huang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Zvi Fishelson
- Department of Cell and Developmental Biology, Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Chenhui Wang
- Department of Cell Biology, School of Medicine, Nankai University, Tianjin 300071, China
| | - Sihe Zhang
- Department of Cell Biology, School of Medicine, Nankai University, Tianjin 300071, China
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25
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Ashby G, Keng KE, Hayden CC, Gollapudi S, Houser JR, Jamal S, Stachowiak JC. Selective endocytic uptake of targeted liposomes occurs within a narrow range of liposome diameter. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.06.548000. [PMID: 37461728 PMCID: PMC10350051 DOI: 10.1101/2023.07.06.548000] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Cell surface receptors facilitate signaling and nutrient uptake. These processes are dynamic, requiring receptors to be actively recycled by endocytosis. Due to their differential expression in disease states, receptors are often the target of drug-carrier particles, which are adorned with ligands that bind specifically to receptors. These targeted particles are taken into the cell by multiple routes of internalization, where the best-characterized pathway is clathrin-mediated endocytosis. Most studies of particle uptake have utilized bulk assays, rather than observing individual endocytic events. As a result, the detailed mechanisms of particle uptake remain obscure. To address this gap, we have employed a live-cell imaging approach to study the uptake of individual liposomes as they interact with clathrin-coated structures. By tracking individual internalization events, we find that the size of liposomes, rather than the density of the ligands on their surfaces, primarily determines their probability of uptake. Interestingly, targeting has the greatest impact on endocytosis of liposomes of intermediate diameters, with the smallest and largest liposomes being internalized or excluded, respectively, regardless of whether they are targeted. These findings, which highlight a previously unexplored limitation of targeted delivery, can be used to design more effective drug carriers.
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Affiliation(s)
- Grant Ashby
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Kayla E Keng
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Carl C Hayden
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Sadhana Gollapudi
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Justin R Houser
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Sabah Jamal
- Department of Biomedical Engineering, The University of Texas at Austin
| | - Jeanne C Stachowiak
- Department of Biomedical Engineering, The University of Texas at Austin
- Department of Chemical Engineering, The University of Texas at Austin
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26
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Yuan M, Lyu S, Wang Y, E L, Liu T, Hou X, Li Y, Zhang C. Host Factors Genes BcCLC1 and BcCLC2 Confer Turnip Mosaic Virus Resistance in Non-Heading Chinese Cabbage ( Brassica campestris ssp. chinensis). PLANTS (BASEL, SWITZERLAND) 2023; 12:2269. [PMID: 37375894 DOI: 10.3390/plants12122269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/26/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023]
Abstract
Clathrin is an evolutionarily highly conserved evolutionary protein consisting of clathrin light chains (CLC) and clathrin heavy chains (CHC), and these form its basic structure. Clathrin is an important host factor in the process of viral infection. In this study, we cloned the BcCLC1 gene and the BcCLC2 gene from the '49CX' variety of non-heading Chinese cabbage (NHCC, Brassica campestris L. ssp. chinensis Makino) and verified their functions. The results showed that BcCLC1 was mainly localized in the cytomembrane and cytoplasm, and only a small amount entered the nucleus. BcCLC2 encoded a protein comprising 265 amino acids that were distributed in the cytomembrane, nucleus, and cytoplasm. A BiFC assay and yeast two-hybrid (Y2H) analysis showed that BcCLCs (BcCLC1 and BcCLC2) could interact with several TuMV proteins. We further investigated the mechanism of BcCLCs in regulating TuMV virus infections in NHCC, and observed that BcCLCs gene silencing inhibited TuMV infections and overexpression of BcCLCs in Arabidopsis promoted TuMV infections in NHCC. Finally, mutants of Arabidopsis homologs of BcCLCs were also screened and subjected to TuMV inoculation tests. In conclusion, we speculate that BcCLCs confer Turnip mosaic virus (TuMV) resistance in NHCC by interacting with TuMV proteins to promote the intracellular transport of the virus.
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Affiliation(s)
- Mengguo Yuan
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Shanwu Lyu
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Yaolong Wang
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Liu E
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Tongkun Liu
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xilin Hou
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Ying Li
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Changwei Zhang
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
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27
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Garcia ML, Danthi P. The Reovirus σ1 Attachment Protein Influences the Stability of Its Entry Intermediate. J Virol 2023; 97:e0058523. [PMID: 37167564 PMCID: PMC10231251 DOI: 10.1128/jvi.00585-23] [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: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 05/13/2023] Open
Abstract
Structural metastability of viral capsids is pivotal for viruses to survive in harsh environments and to undergo timely conformational changes required for cell entry. Mammalian orthoreovirus (reovirus) is a model to study capsid metastability. Following initial disassembly of the reovirus particle mediated by proteases, a metastable intermediate called the infectious subvirion particle (ISVP) is generated. Using a σ1 monoreassortant virus, we recently showed that σ1 properties affect its encapsidation on particles and the metastability of ISVPs. How metastability is impacted by σ1 and whether the lower encapsidation level of σ1 is connected to this property is unknown. To define a correlation between encapsidation of σ1 and ISVP stability, we generated mutant viruses with single amino acid polymorphisms in σ1 or those that contain chimeric σ1 molecules composed of σ1 portions from type 1 and type 3 reovirus strains. We found that under most conditions where σ1 encapsidation on the particle was lower, ISVPs displayed lower stability. Characterization of mutant viruses selected for enhanced stability via a forward genetic approach also revealed that in some cases, σ1 properties influence stability without influencing σ1 encapsidation. These data indicate that σ1 can also influence ISVP stability independent of its level of incorporation. Together, our work reveals an underappreciated effect of the σ1 attachment protein on the properties of the reovirus capsid. IMPORTANCE Reovirus particles are comprised of eight proteins. Among them, the reovirus σ1 protein functions engages cellular receptors. σ1 also influences the stability of an entry intermediate called ISVP. Here, we sought to define the basis of the link between σ1 properties and stability of ISVPs. Using variety of mutant strains, we determined that when virus preparations contain particles with a high amount of encapsidated σ1, ISVP stability is higher. Additionally, we identified portions of σ1 that impact its encapsidation and consequently the stability of ISVPs. We also determined that in some cases, σ1 properties alter stability of ISVPs without affecting encapsidation. This work highlights that proteins of these complex particles are arranged in an intricate, interconnected manner such that changing the properties of these proteins has a profound impact on the remainder of the particle.
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Affiliation(s)
| | - Pranav Danthi
- Department of Biology, Indiana University, Bloomington, Indiana, USA
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28
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Cagliani R, Fayed B, Jagal J, Shakartalla SB, Soliman SSM, Haider M. Peptide-functionalized zinc oxide nanoparticles for the selective targeting of breast cancer expressing placenta-specific protein 1. Colloids Surf B Biointerfaces 2023; 227:113357. [PMID: 37210795 DOI: 10.1016/j.colsurfb.2023.113357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/20/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
Functionalized metal oxide nanoparticles (NPs) have demonstrated specific binding affinity to antigens or receptors presented on the cancer cell surface, favouring selective targeting and minimizing side effects during the chemotherapy. Placenta-specific protein 1 (PLAC-1) is a small cell surface protein overexpressed in certain types of breast cancer (BC); therefore, it can be used as a therapeutic target. The objective of this study is to develop NPs that can bind PLAC-1 and hence can inhibit the progression and metastatic potential of BC cells. Zinc oxide (ZnO) NPs were coated with a peptide (GILGFVFTL), which possesses a strong binding ability to PLAC-1. The physical attachment of the peptide to ZnO NPs was verified through various physicochemical and morphological characterization techniques. The selective cytotoxicity of the designed NPs was investigated using PLAC-1-bearing MDA-MB 231 human BC cell line and compared to LS-180 cells that do not express PLAC-1. The anti-metastatic and pro-apoptotic effects of the functionalized NPs on MDA-MB 231 cells were examined. Confocal microscopy was used to investigate the mechanism of NPs uptake by MDA-MB 231 cells. Compared to non-functionalized NPs, peptide functionalization significantly improved the targeting and uptake of the designed NPs by PLAC-1-expressing cancer cells with significant pro-apoptotic and anti-metastatic effects. The uptake of peptide functionalized ZnO NPs (ZnO-P NPs) occurred via peptide-PLAC1 interaction-assisted clathrin-mediated endocytosis. These findings highlight the potential targeted therapy of ZnO-P NPs against PLAC-1-expressing breast cancer cells.
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Affiliation(s)
- Roberta Cagliani
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates
| | - Bahgat Fayed
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates; Chemistry of Natural and Microbial Product Department, National Research Centre, Cairo 12622, Egypt
| | - Jayalakshmi Jagal
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates
| | - Sarra B Shakartalla
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates; College of Medicine, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates; Faculty of Pharmacy, University of Gezira, P.O. Box. 21111, Wadmedani, Sudan
| | - Sameh S M Soliman
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates; Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, 27272 Sharjah, United Arab Emirates
| | - Mohamed Haider
- Research Institute of Medical & Health Sciences, University of Sharjah, 27272 Sharjah, United Arab Emirates; Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, University of Sharjah, 27272 Sharjah, United Arab Emirates.
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29
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Majood M, Selvam A, Agrawal O, Chaurasia R, Rawat S, Mohanty S, Mukherjee M. Biogenic Carbon Quantum Dots as a Neoteric Inducer in the Game of Directing Chondrogenesis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:19997-20011. [PMID: 37042793 DOI: 10.1021/acsami.3c02007] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The journey into the field of stem cell biology has been an endeavor of paramount advancement in biomedicine, establishing new horizons in the avenue of materiobiology. The creative drive of the scientific community focuses on ameliorating the utilization of stem cells, which is currently untapped on a large scale. With similar motivation, we present a nascent strategy of maneuvering biogenic carbon quantum dots (CQDs) to eclipse the toxic hurdles of chemical synthesis of carbon allotropes to serve as a biocompatible trident in stem cell biology employing a three-prong action of stem cell differentiation, imaging, and migration. The derivation of CQDs from garlic peels as a biogenic precursor abets in realizing the optophysical features of CQDs to image mesenchymal stem cells without hampering the biological systems with cytotoxicity. We report the versatility of biogenic CQDs to generate reactive oxygen species (ROS) to robustly influence stem cell migration and concomitantly chondrocyte differentiation from human Wharton's jelly mesenchymal stem cells (hWJ-MSCs). This was orchestrated without the use of chondrogenic induction factors, which was confirmed from the expression of chondrogenic markers (Col II, Col X, ACAN). Even the collagen content of cells incubated with CQDs was quite comparable with that of chondrocyte-induced cells. Thus, we empirically propose garlic peel-derived CQDs as a tangible advancement in stem cell biology from a materiobiological frame of reference to hone significant development in this arena.
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Affiliation(s)
- Misba Majood
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201303, India
| | - Abhyavartin Selvam
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201303, India
- Amity Institute of Nanotechnology, Amity University, Noida, Uttar Pradesh 201303, India
| | - Omnarayan Agrawal
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201303, India
| | - Radhika Chaurasia
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201303, India
| | - Sonali Rawat
- Stem Cells Facility, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sujata Mohanty
- Stem Cells Facility, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Monalisa Mukherjee
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh 201303, India
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30
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Iwamoto Y, Ye A, Shirazinejad C, Hurley JH, Drubin DG. Kinetic investigation reveals an HIV-1 Nef-dependent increase in AP-2 recruitment and productivity at endocytic sites. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.18.537262. [PMID: 37131815 PMCID: PMC10153213 DOI: 10.1101/2023.04.18.537262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Lentiviruses express non-enzymatic accessory proteins whose function is to subvert cellular machinery in the infected host. The HIV-1 accessory protein Nef hijacks clathrin adaptors to degrade or mislocalize host proteins involved in antiviral defenses. Here, we investigate the interaction between Nef and clathrin-mediated endocytosis (CME), a major pathway for membrane protein internalization in mammalian cells, using quantitative live-cell microscopy in genome-edited Jurkat cells. Nef is recruited to CME sites on the plasma membrane, and this recruitment correlates with an increase in the recruitment and lifetime of CME coat protein AP-2 and late-arriving CME protein dynamin2. Furthermore, we find that CME sites that recruit Nef are more likely to recruit dynamin2, suggesting that Nef recruitment to CME sites promotes CME site maturation to ensure high efficiency in host protein downregulation.
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Affiliation(s)
- Yuichiro Iwamoto
- Department of Molecular and Cell Biology, University of California Berkeley; Berkeley CA 94720, USA
| | - Anna Ye
- Department of Molecular and Cell Biology, University of California Berkeley; Berkeley CA 94720, USA
| | - Cyna Shirazinejad
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720, USA
| | - James H Hurley
- Department of Molecular and Cell Biology, University of California Berkeley; Berkeley CA 94720, USA
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720, USA
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - David G Drubin
- Department of Molecular and Cell Biology, University of California Berkeley; Berkeley CA 94720, USA
- California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720, USA
- Biophysics Graduate Group, University of California, Berkeley, Berkeley, CA 94720, USA
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31
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Loric S, Denis JA, Desbene C, Sabbah M, Conti M. Extracellular Vesicles in Breast Cancer: From Biology and Function to Clinical Diagnosis and Therapeutic Management. Int J Mol Sci 2023; 24:7208. [PMID: 37108371 PMCID: PMC10139222 DOI: 10.3390/ijms24087208] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/03/2023] [Accepted: 04/09/2023] [Indexed: 04/29/2023] Open
Abstract
Breast cancer (BC) is the first worldwide most frequent cancer in both sexes and the most commonly diagnosed in females. Although BC mortality has been thoroughly declining over the past decades, there are still considerable differences between women diagnosed with early BC and when metastatic BC is diagnosed. BC treatment choice is widely dependent on precise histological and molecular characterization. However, recurrence or distant metastasis still occurs even with the most recent efficient therapies. Thus, a better understanding of the different factors underlying tumor escape is mainly mandatory. Among the leading candidates is the continuous interplay between tumor cells and their microenvironment, where extracellular vesicles play a significant role. Among extracellular vesicles, smaller ones, also called exosomes, can carry biomolecules, such as lipids, proteins, and nucleic acids, and generate signal transmission through an intercellular transfer of their content. This mechanism allows tumor cells to recruit and modify the adjacent and systemic microenvironment to support further invasion and dissemination. By reciprocity, stromal cells can also use exosomes to profoundly modify tumor cell behavior. This review intends to cover the most recent literature on the role of extracellular vesicle production in normal and cancerous breast tissues. Specific attention is paid to the use of extracellular vesicles for early BC diagnosis, follow-up, and prognosis because exosomes are actually under the spotlight of researchers as a high-potential source of liquid biopsies. Extracellular vesicles in BC treatment as new targets for therapy or efficient nanovectors to drive drug delivery are also summarized.
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Affiliation(s)
- Sylvain Loric
- INSERM U538, CRSA, Saint-Antoine University Hospital, 75012 Paris, France; (J.A.D.)
| | | | - Cédric Desbene
- INSERM U538, CRSA, Saint-Antoine University Hospital, 75012 Paris, France; (J.A.D.)
| | - Michèle Sabbah
- INSERM U538, CRSA, Saint-Antoine University Hospital, 75012 Paris, France; (J.A.D.)
| | - Marc Conti
- INSERM U538, CRSA, Saint-Antoine University Hospital, 75012 Paris, France; (J.A.D.)
- INTEGRACELL SAS, 91160 Longjumeau, France
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32
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Li Z, Zhu Y, Zeng H, Wang C, Xu C, Wang Q, Wang H, Li S, Chen J, Xiao C, Yang X, Li Z. Mechano-boosting nanomedicine antitumour efficacy by blocking the reticuloendothelial system with stiff nanogels. Nat Commun 2023; 14:1437. [PMID: 36918575 PMCID: PMC10015032 DOI: 10.1038/s41467-023-37150-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 03/03/2023] [Indexed: 03/16/2023] Open
Abstract
Nanomedicine has been developed for cancer therapy over several decades, while rapid clearance from blood circulation by reticuloendothelial system (RES) severely limits nanomedicine antitumour efficacy. We design a series of nanogels with distinctive stiffness and investigate how nanogel mechanical properties could be leveraged to overcome RES. Stiff nanogels are injected preferentially to abrogate uptake capacity of macrophages and temporarily block RES, relying on inhibition of clathrin and prolonged liver retention. Afterwards, soft nanogels deliver doxorubicin (DOX) with excellent efficiency, reflected in high tumour accumulation, deep tumour penetration and outstanding antitumour efficacy. In this work, we combine the advantage of stiff nanogels in RES-blockade with the superiority of soft nanogels in drug delivery leads to the optimum tumour inhibition effect, which is defined as mechano-boosting antitumour strategy. Clinical implications of stiffness-dependent RES-blockade are also confirmed by promoting antitumour efficacy of commercialized nanomedicines, such as Doxil and Abraxane.
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Affiliation(s)
- Zheng Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Yabo Zhu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Haowen Zeng
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Chong Wang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Chen Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Qiang Wang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Huimin Wang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Shiyou Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Jitang Chen
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Chen Xiao
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China.,Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China.,Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medical, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China.,GBA Research Innovation Institute for Nanotechnology, 510530, Guangzhou, Guangdong, P. R. China
| | - Zifu Li
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China. .,Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China. .,Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medical, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China. .,Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science and Technology, 430074, Wuhan, P. R. China.
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33
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Wu W, Ding Q, Zhou Z, Kuang W, Jiang L, Liu P, Ai W, Zhu W. Transcellular Transport Behavior of the Intact Polymeric Mixed Micelles with Different Polymeric Ratios. AAPS PharmSciTech 2023; 24:69. [PMID: 36792796 DOI: 10.1208/s12249-022-02454-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/31/2022] [Indexed: 02/17/2023] Open
Abstract
In order to better promote the application of the polymeric mixed micelles (PMMs) in oral delivery, in addition to focusing on the improvement of micellar structural stability, it is necessary to obtain the absorption characteristics of the intact micellar particles. In this work, the transport behavior across Caco-2 cells of FS/PMMs composed of Pluronic F127 and Solutol HS15 was tracked by encapsulating an environment-responsive probe into the particles. The specific property of the probe is the water-initiated aggregation-caused quenching (ACQ) ability, by which integral particles can be identified accurately. The influence of polymeric ratios (FS) on the transcellular behavior of FS/PMMs was explored and the single pass intestinal perfusion experiment was used to further illustrate it. Moreover, pharmacokinetics parameters were detected to analyze the relationship among FS ratios, transport behavior, and pharmacokinetic parameters. FS ratios were found to hardly affect the endocytosis pathways and intracellular itinerary of FS/PMMs, but do affect the proportion of each path. FS/PMMs with high HS15 content, namely System-I, were found to primarily undergo receptor-mediated endocytosis pathway and be less susceptible to lysosomal degradation, which would lead to more absorption and higher Cmax and AUC than drug suspension. In contrast, despite System-II with high F127 content cannot contribute to drug plasma concentration, it can prolong the in vivo retention time. These findings provided evidence for the role of polymeric ratios in modulating the transcellular absorption and pharmacokinetic parameters of the drug-loaded PMMs, and would be a step forward in helping PMMs' design to enhance oral drug delivery.
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Affiliation(s)
- Wenting Wu
- Institute of Modern Chinese Medicine Pharmaceutical Industry, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Quan Ding
- Key Laboratory of Modern Chinese Medicine Preparations Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Zhiwei Zhou
- Key Laboratory of Modern Chinese Medicine Preparations Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Wenliang Kuang
- Key Laboratory of Modern Chinese Medicine Preparations Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Lipeng Jiang
- Institute of Modern Chinese Medicine Pharmaceutical Industry, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Peng Liu
- Institute of Modern Chinese Medicine Pharmaceutical Industry, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Weiping Ai
- Institute of Modern Chinese Medicine Pharmaceutical Industry, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China.
| | - Weifeng Zhu
- Institute of Modern Chinese Medicine Pharmaceutical Industry, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China.
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Efficient Liposome Loading onto Surface of Mesenchymal Stem Cells via Electrostatic Interactions for Tumor-Targeted Drug Delivery. Biomedicines 2023; 11:biomedicines11020558. [PMID: 36831094 PMCID: PMC9953681 DOI: 10.3390/biomedicines11020558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/06/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have a tumor-homing capacity; therefore, MSCs are a promising drug delivery carrier for cancer therapy. To maintain the viability and activity of MSCs, anti-cancer drugs are preferably loaded on the surface of MSCs, rather than directly introduced into MSCs. In this study, we attempted to load liposomes on the surface of MSCs by using the magnetic anionic liposome/atelocollagen complexes that we previously developed and assessed the characters of liposome-loaded MSCs as drug carriers. We observed that large-sized magnetic anionic liposome/atelocollagen complexes were abundantly associated with MSCs via electrostatic interactions under a magnetic field, and its cellular internalization was lower than that of the small-sized complexes. Moreover, the complexes with higher atelocollagen concentrations showed lower cellular internalization than the complexes with lower atelocollagen concentrations. Based on these results, we succeeded in the efficient loading of liposomes on the surface of MSCs by using large-sized magnetic anionic liposomes complexed with a high concentration of atelocollagen. The constructed liposome-loaded MSCs showed a comparable proliferation rate and differentiation potential to non-loaded MSCs. Furthermore, the liposome-loaded MSCs efficiently adhered to vascular endothelial cells and migrated toward the conditioned medium from cancer cells in vitro and solid tumor tissue in vivo. These findings suggest that liposome-loaded MSCs could serve as an efficient cell-based drug carrier for tumor-targeted delivery.
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Gallusser B, Maltese G, Di Caprio G, Vadakkan TJ, Sanyal A, Somerville E, Sahasrabudhe M, O’Connor J, Weigert M, Kirchhausen T. Deep neural network automated segmentation of cellular structures in volume electron microscopy. J Cell Biol 2023; 222:e202208005. [PMID: 36469001 PMCID: PMC9728137 DOI: 10.1083/jcb.202208005] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/03/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Volume electron microscopy is an important imaging modality in contemporary cell biology. Identification of intracellular structures is a laborious process limiting the effective use of this potentially powerful tool. We resolved this bottleneck with automated segmentation of intracellular substructures in electron microscopy (ASEM), a new pipeline to train a convolutional neural network to detect structures of a wide range in size and complexity. We obtained dedicated models for each structure based on a small number of sparsely annotated ground truth images from only one or two cells. Model generalization was improved with a rapid, computationally effective strategy to refine a trained model by including a few additional annotations. We identified mitochondria, Golgi apparatus, endoplasmic reticulum, nuclear pore complexes, caveolae, clathrin-coated pits, and vesicles imaged by focused ion beam scanning electron microscopy. We uncovered a wide range of membrane-nuclear pore diameters within a single cell and derived morphological metrics from clathrin-coated pits and vesicles, consistent with the classical constant-growth assembly model.
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Affiliation(s)
- Benjamin Gallusser
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
- Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Giorgio Maltese
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Giuseppe Di Caprio
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
| | - Tegy John Vadakkan
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Anwesha Sanyal
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Elliott Somerville
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Mihir Sahasrabudhe
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
- Université Paris-Saclay, CentraleSupélec, Mathématiques et Informatique pour la Complexité et les Systèmes, Gif-sur-Yvette, France
| | - Justin O’Connor
- Department of Biological Chemistry & Molecular Pharmacology, Harvard Medical School, Boston, MA
| | - Martin Weigert
- Institute of Bioengineering, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tom Kirchhausen
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
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Yu Y, Li S, Yao Y, Shen X, Li L, Huang Y. Increasing stiffness promotes pulmonary retention of ligand-directed dexamethasone-loaded nanoparticle for enhanced acute lung inflammation therapy. Bioact Mater 2023; 20:539-547. [PMID: 35846844 PMCID: PMC9253482 DOI: 10.1016/j.bioactmat.2022.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Inhaled nanoparticles (NPs) need to penetrate the bronchial mucosa to deliver drug payloads deeply in the lung for amplified local therapy. However, the bronchial mucociliary barrier eliminates NPs rapidly, which considerably limits their mucosal penetration. In this study, we find that surface ligand modification and stiffness adjustment of NPs contribute to the significantly enhanced bronchial mucosal absorption and pulmonary retention of inhaled drugs. We utilize neonatal Fc receptor ligand (FcBP) to modify the rationally designed low stiffness NPs (Soft-NP) and high stiffness NPs (Stiff-NP) to target bronchial mucosa. In an acute lung inflammation rat model, after intranasal administration with dexamethasone-loaded NPs, Stiff-NP endowed with FcBP displays superior therapeutic effects. The in vitro data demonstrate that the promotion effect of FcBP to bronchial mucosal absorption of Stiff-NP dominates over Soft-NP. This could be attributed to the higher affinity between ligand-receptor when incorporating FcBP on the Stiff-NP surface. Meanwhile, high stiffness modulates more actin filaments aggregation to mediate endocytosis, along with strengthened Ca2+ signal to enhance exocytosis. Conclusively, we highlight that FcBP-modified NPs with higher stiffness would be a potential pulmonary drug delivery system. Nanoparticles with higher stiffness and FcBP modification were more prone to accumulate and remain in the lungs. Surface ligand modification on high stiffness NPs contributes to the significantly enhanced pulmonary retention of inhaled drugs. High stiffness and FcBP modification jointly improved the therapeutic efficacy of dexamethasone on acute lung inflammation.
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Itagaki M, Nasu Y, Sugiyama C, Nakase I, Kamei N. A universal method to analyze cellular internalization mechanisms via endocytosis without non-specific cross-effects. FASEB J 2023; 37:e22764. [PMID: 36624697 DOI: 10.1096/fj.202201780r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 01/11/2023]
Abstract
Endocytosis is an essential biological process for nutrient absorption and intercellular communication; it can also be used to accelerate the cellular internalization of drug delivery carriers. Clarifying the cellular uptake mechanisms of unidentified endogenous and exogenous molecules and designing new effective drug delivery systems require an accurate, specific endocytosis analysis methodology. Therefore, we developed a method to specifically evaluate cellular internalization via three main endocytic pathways: clathrin- and caveolae-mediated endocytosis, and macropinocytosis. We first revealed that most known endocytosis inhibitors had no specific inhibitory effect or were cytotoxic. Second, we successfully established an alternative method using small interfering RNA to knock down dynamin-2 and caveolin-1, which are necessary for clathrin- and caveolae-mediated endocytosis, in HeLa cells. Third, we established another method to specifically analyze macropinocytosis using rottlerin on A431 cells. Finally, we validated the proposed methods by testing the cellular internalization of a biological molecule (insulin) and carriers (nanoparticles and cell-penetrating peptides). Through this study, we established versatile methods to precisely and specifically evaluate endocytosis of newly developed biopharmaceuticals or drug delivery systems.
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Affiliation(s)
- Mai Itagaki
- Laboratory of Drug Delivery Systems, Graduate School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Yoshinori Nasu
- Laboratory of Drug Delivery Systems, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Chiaki Sugiyama
- Laboratory of Drug Delivery Systems, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
| | - Ikuhiko Nakase
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - Noriyasu Kamei
- Laboratory of Drug Delivery Systems, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan
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Rahmani S, Ahmed H, Ibazebo O, Fussner-Dupas E, Wakarchuk WW, Antonescu CN. O-GlcNAc transferase modulates the cellular endocytosis machinery by controlling the formation of clathrin-coated pits. J Biol Chem 2023; 299:102963. [PMID: 36731797 PMCID: PMC9999237 DOI: 10.1016/j.jbc.2023.102963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 02/01/2023] Open
Abstract
Clathrin-mediated endocytosis (CME) controls the internalization and function of a wide range of cell surface proteins. CME occurs by the assembly of clathrin and many other proteins on the inner leaflet of the plasma membrane into clathrin-coated pits (CCPs). These structures recruit specific cargo destined for internalization, generate membrane curvature, and in many cases undergo scission from the plasma membrane to yield intracellular vesicles. The diversity of functions of cell surface proteins controlled via internalization by CME may suggest that regulation of CCP formation could be effective to allow cellular adaptation under different contexts. Of interest is how cues derived from cellular metabolism may regulate CME, given the reciprocal role of CME in controlling cellular metabolism. The modification of proteins with O-linked β-GlcNAc (O-GlcNAc) is sensitive to nutrient availability and may allow cellular adaptation to different metabolic conditions. Here, we examined how the modification of proteins with O-GlcNAc may control CCP formation and thus CME. We used perturbation of key enzymes responsible for protein O-GlcNAc modification, as well as specific mutants of the endocytic regulator AAK1 predicted to be impaired for O-GlcNAc modification. We identify that CCP initiation and the assembly of clathrin and other proteins within CCPs are controlled by O-GlcNAc protein modification. This reveals a new dimension of regulation of CME and highlights the important reciprocal regulation of cellular metabolism and endocytosis.
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Affiliation(s)
- Sadia Rahmani
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Hafsa Ahmed
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Osemudiamen Ibazebo
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Eden Fussner-Dupas
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario, Canada
| | - Warren W Wakarchuk
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
| | - Costin N Antonescu
- Department of Chemistry and Biology, Toronto Metropolitan University, Toronto, Ontario, Canada; Graduate Program in Molecular Science, Toronto Metropolitan University, Toronto, Ontario, Canada.
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Zimmer O, Goepferich A. How clathrin-coated pits control nanoparticle avidity for cells. NANOSCALE HORIZONS 2023; 8:256-269. [PMID: 36594629 DOI: 10.1039/d2nh00543c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The paramount relevance of clathrin-coated pits (CCPs) to receptor-mediated endocytosis of nanoparticles, extracellular vesicles, and viruses has made them the focus of many studies; however, the role of CCP geometry in the ligand-receptor interactions between multivalent nanoparticles and cells has not been investigated. We hypothesized the general dependence of nanoparticle binding energy on local membrane curvature to be expandable to the specific case of ligand-functionalized nanoparticles binding cell membranes, in the sense that membrane structures whose curvature matches that of the particle (e.g., CCPs) signficantly contribute to binding avidity. We investigated this hypothesis with nanoparticles that bind multivalently to angiotensin II receptor type 1, which is subject to clathrin-mediated endocytosis. When we used cholesterol extraction to prevent the action of CCPs, we found a 67 to 100-fold loss in avidity. We created a theoretical model that predicts this decrease based on the loss of ligand-receptor interactions when CCPs, which perfectly match nanoparticle geometry, are absent. Our findings shed new light on how cells "see" nanoparticles. The presence or absence of CPPs is so influential on how cells interact with nanoparticles that the number of particles required to be visible to cells changes by two orders of magnitude depending on CCP presence.
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Affiliation(s)
- Oliver Zimmer
- Department for Pharmaceutical Technology, University of Regensburg, Regensburg, 93050, Germany.
| | - Achim Goepferich
- Department for Pharmaceutical Technology, University of Regensburg, Regensburg, 93050, Germany.
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40
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Alkafaas SS, Abdallah AM, Ghosh S, Loutfy SA, Elkafas SS, Abdel Fattah NF, Hessien M. Insight into the role of clathrin-mediated endocytosis inhibitors in SARS-CoV-2 infection. Rev Med Virol 2023; 33:e2403. [PMID: 36345157 PMCID: PMC9877911 DOI: 10.1002/rmv.2403] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 10/08/2022] [Accepted: 10/10/2022] [Indexed: 11/10/2022]
Abstract
Emergence of SARS-CoV-2 variants warrants sustainable efforts to upgrade both the diagnostic and therapeutic protocols. Understanding the details of cellular and molecular basis of the virus-host cell interaction is essential for developing variant-independent therapeutic options. The internalization of SARS-CoV-2, into lung epithelial cells, is mediated by endocytosis, especially clathrin-mediated endocytosis (CME). Although vaccination is the gold standard strategy against viral infection, selective inhibition of endocytic proteins, complexes, and associated adaptor proteins may present a variant-independent therapeutic strategy. Although clathrin and/or dynamins are the most important proteins involved in CME, other endocytic mechanisms are clathrin and/or dynamin independent and rely on other proteins. Moreover, endocytosis implicates some subcellular structures, like plasma membrane, actin and lysosomes. Also, physiological conditions, such as pH and ion concentrations, represent an additional factor that mediates these events. Accordingly, endocytosis related proteins are potential targets for small molecules that inhibit endocytosis-mediated viral entry. This review summarizes the potential of using small molecules, targeting key proteins, participating in clathrin-dependent and -independent endocytosis, as variant-independent antiviral drugs against SARS-CoV-2 infection. The review takes two approaches. The first outlines the potential role of endocytic inhibitors in preventing endocytosis-mediated viral entry and its mechanism of action, whereas in the second computational analysis was implemented to investigate the selectivity of common inhibitors against endocytic proteins in SARS-CoV-2 endocytosis. The analysis revealed that remdesivir, methyl-β-cyclodextrin, rottlerin, and Bis-T can effectively inhibit clathrin, HMG-CoA reductase, actin, and dynamin I GTPase and are more potent in inhibiting SARS-CoV-2 than chloroquine. CME inhibitors for SARS-CoV-2 infection remain understudied.
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Affiliation(s)
- Samar Sami Alkafaas
- Molecular Cell Biology UniteDivision of BiochemistryDepartment of ChemistryFaculty of ScienceTanta UniversityTantaEgypt
| | - Abanoub Mosaad Abdallah
- Narcotic Research DepartmentNational Center for Social and Criminological Research (NCSCR)GizaEgypt
| | - Soumya Ghosh
- Department of GeneticsFaculty of Natural and Agricultural SciencesUniversity of the Free StateBloemfonteinSouth Africa
| | - Samah A. Loutfy
- Virology and Immunology UnitCancer Biology DepartmentNational Cancer Institute (NCI)Cairo UniversityCairoEgypt
- Nanotechnology Research CenterBritish UniversityCairoEgypt
| | - Sara Samy Elkafas
- Production Engineering and Mechanical Design DepartmentFaculty of EngineeringMenofia UniversityMenofiaEgypt
| | - Nasra F. Abdel Fattah
- Virology and Immunology UnitCancer Biology DepartmentNational Cancer Institute (NCI)Cairo UniversityCairoEgypt
| | - Mohamed Hessien
- Molecular Cell Biology UniteDivision of BiochemistryDepartment of ChemistryFaculty of ScienceTanta UniversityTantaEgypt
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41
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Richards CJ, Ahmadi M, Stuart MCA, Kooi BJ, Åberg C, Roos WH. The effect of biomolecular corona on adsorption onto and desorption from a model lipid membrane. NANOSCALE 2022; 15:248-258. [PMID: 36472238 DOI: 10.1039/d2nr05296b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The current lack of insight into nanoparticle-cell membrane interactions hampers smart design strategies and thereby the development of effective nanodrugs. Quantitative and methodical approaches utilizing cell membrane models offer an opportunity to unravel particle-membrane interactions in a detailed manner under well controlled conditions. Here we use total internal reflection microscopy for real-time studies of the non-specific interactions between nanoparticles and a model cell membrane at 50 ms temporal resolution over a time course of several minutes. Maintaining a simple lipid bilayer system across conditions, adsorption and desorption were quantified as a function of biomolecular corona, particle size and fluid flow. The presence of a biomolecular corona reduced both the particle adsorption rate onto the membrane and the duration of adhesion, compared to pristine particle conditions. Particle size, on the other hand, was only observed to affect the adsorption rate. The introduction of flow reduced the number of adsorption events, but increased the residence time. Lastly, altering the composition of the membrane itself resulted in a decreased number of adsorption events onto negatively charged bilayers compared to neutral bilayers. Overall, a model membrane system offers a facile platform for real-time imaging of individual adsorption-desorption processes, revealing complex adsorption kinetics, governed by particle surface energy, size dependent interaction forces, flow and membrane composition.
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Affiliation(s)
- Ceri J Richards
- Molecular Biophysics, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, 9747 AG Groningen, Netherlands.
- Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, Rijksuniversiteit Groningen, 9713 AV Groningen, Netherlands.
| | - Majid Ahmadi
- Nanostructure Materials and Interfaces, Zernike Institute for Advanced Materials, Rijksuniversiteit 9747 AG Groningen, Netherlands
| | - Marc C A Stuart
- Department of Electron Microscopy, Groningen Biomolecular Sciences and Biotechnology Institute, Rijksuniversiteit Groningen, 9747 AG Groningen, Netherlands
| | - Bart J Kooi
- Nanostructure Materials and Interfaces, Zernike Institute for Advanced Materials, Rijksuniversiteit 9747 AG Groningen, Netherlands
| | - Christoffer Åberg
- Pharmaceutical Analysis, Groningen Research Institute of Pharmacy, Rijksuniversiteit Groningen, 9713 AV Groningen, Netherlands.
| | - Wouter H Roos
- Molecular Biophysics, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen, 9747 AG Groningen, Netherlands.
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Abu Rass R, Kembou-Ringert JE, Zamostiano R, Eldar A, Ehrlich M, Bacharach E. Mapping of Tilapia Lake Virus entry pathways with inhibitors reveals dependence on dynamin activity and cholesterol but not endosomal acidification. Front Cell Dev Biol 2022; 10:1075364. [PMID: 36605723 PMCID: PMC9809973 DOI: 10.3389/fcell.2022.1075364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
Tilapia Lake Virus (TiLV) is an emerging virus lethal to tilapia, which threatens the global tilapia aquaculture with severe implications for food security. TiLV possesses similar features to orthomyxoviruses but is classified in the sole and the monotypic genus Tilapinevirus of the family Amnoonviridae. TiLV enveloped virions encapsidate a genome comprising ten segments of single-stranded, negative RNA. Remarkably, nine of TiLV's ten major proteins lack sequence homology to any known viral or cellular proteins. The mode of TiLV entry into tilapia cells is not known. Following the measurement of the entry window of TiLV (∼3 h), we applied a panel of inhibitors of known regulators of endocytic functions to map the molecular requirements for TiLV entry. We identified productive entry by quantification of TiLV nucleoprotein expression and the generation of infectious particles. Inhibition of dynamin activity with dynasore or dynole, or depletion of cholesterol with methyl-β-cyclodextrin, strongly inhibited TiLV protein synthesis and infectious virion production. Moreover, inhibition of actin cytoskeleton polymerization with latrunculin A or microtubule polymerization with nocodazole within the entry window resulted in partial inhibition of TiLV infection. In contrast, inhibitors of endosomal acidification (NH4Cl, bafilomycin A1, or chloroquine), an inhibitor of clathrin-coated pit assembly (pitstop 2), and erlotinib-an inhibitor of the endocytic Cyclin G-associated kinase (GAK), did not affect TiLV entry. Altogether, these results suggest that TiLV enters via dynamin-mediated endocytosis in a cholesterol-, cytoskeleton-dependent manner, and clathrin-, pH-independent manner. Thus, despite being an orthomyxo-like virus, when compared to the prototypical orthomyxovirus (influenza A virus), TiLV shows a distinct set of requirements for entry into cells.
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Affiliation(s)
- Reem Abu Rass
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - Japhette Esther Kembou-Ringert
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - Rachel Zamostiano
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel
| | - Avi Eldar
- Department of Virology, The Kimron Veterinary Institute, Beit Dagan, Israel
| | - Marcelo Ehrlich
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel,*Correspondence: Marcelo Ehrlich, ; Eran Bacharach,
| | - Eran Bacharach
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel,*Correspondence: Marcelo Ehrlich, ; Eran Bacharach,
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Varzandeh M, Labbaf S, Varshosaz J, Laurent S. An overview of the intracellular localization of high-Z nanoradiosensitizers. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2022; 175:14-30. [PMID: 36029849 DOI: 10.1016/j.pbiomolbio.2022.08.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 07/17/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Radiation therapy (RT) is a method commonly used for cancer treatment worldwide. Commonly, RT utilizes two routes for combating cancers: 1) high-energy radiation to generate toxic reactive oxygen species (ROS) (through the dissociation of water molecules) for damaging the deoxyribonucleic acid (DNA) inside the nucleus 2) direct degradation of the DNA. However, cancer cells have mechanisms to survive under intense RT, which can considerably decrease its therapeutic efficacy. Excessive radiation energy damages healthy tissues, and hence, low doses are applied for cancer treatment. Additionally, different radiosensitizers were used to sensitize cancer cells towards RT through individual mechanisms. Following this route, nanoparticle-based radiosensitizers (herein called nanoradiosensitizers) have recently gained attention owing to their ability to produce massive electrons which leads to the production of a huge amount of ROS. The success of the nanoradiosensitizer effect is closely correlated to its interaction with cells and its localization within the cells. In other words, tumor treatment is affected from the chain of events which is started from cell-nanoparticle interaction followed by the nanoparticles direction and homing inside the cell. Therefore, passive or active targeting of the nanoradiosensitizers in the subcellular level and the cell-nano interaction would determine the efficacy of the radiation therapy. The importance of the nanoradiosensitizer's targeting is increased while the organelles beyond nucleus are recently recognized as the mediators of the cancer cell death or resistance under RT. In this review, the principals of cell-nanomaterial interactions and which dominate nanoradiosensitizer efficiency in cancer therapy, are thoroughly discussed.
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Affiliation(s)
- Mohammad Varzandeh
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
| | - Sheyda Labbaf
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
| | - Jaleh Varshosaz
- Novel Drug Delivery Systems Research Center and Department of Pharmaceutics, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Sophie Laurent
- Laboratory of NMR and Molecular Imaging, Department of General, Organic Chemistry and Biomedical, University of Mons, Mons, Belgium.
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Floris E, Piras A, Pezzicoli FS, Zamparo M, Dall'Asta L, Gamba A. Phase separation and critical size in molecular sorting. Phys Rev E 2022; 106:044412. [PMID: 36397477 DOI: 10.1103/physreve.106.044412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
Molecular sorting is a fundamental process that allows eukaryotic cells to distill and concentrate specific chemical factors in appropriate cell membrane subregions, thus endowing them with different chemical identities and functional properties. A phenomenological theory of this molecular distillation process has recently been proposed [M. Zamparo, D. Valdembri, G. Serini, I. V. Kolokolov, V. V. Lebedev, L. Dall'Asta, and A. Gamba, Phys. Rev. Lett. 126, 088101 (2021)0031-900710.1103/PhysRevLett.126.088101], based on the idea that molecular sorting emerges from the combination of (a) phase separation driven formation of sorting domains and (b) domain-induced membrane bending, leading to the production of submicrometric lipid vesicles enriched in the sorted molecules. In this framework, a natural parameter controlling the efficiency of molecular distillation is the critical size of phase separated domains. In the experiments, sorting domains appear to fall into two classes: unproductive domains, characterized by short lifetimes and low probability of extraction, and productive domains, that evolve into vesicles that ultimately detach from the membrane system. It is tempting to link these two classes to the different fates predicted by classical phase separation theory for subcritical and supercritical phase separated domains. Here, we discuss the implication of this picture in the framework of the previously introduced phenomenological theory of molecular sorting. Several predictions of the theory are verified by numerical simulations of a lattice-gas model. Sorting is observed to be most efficient when the number of sorting domains is close to a minimum. To help in the analysis of experimental data, an operational definition of the critical size of sorting domains is proposed. Comparison with experimental results shows that the statistical properties of productive and unproductive domains inferred from experimental data are in agreement with those predicted from numerical simulations of the model, compatibly with the hypothesis that molecular sorting is driven by a phase separation process.
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Affiliation(s)
- Elisa Floris
- Institute of Condensed Matter Physics and Complex Systems, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Andrea Piras
- Italian Institute for Genomic Medicine and Candiolo Cancer Institute IRCCS, Strada Provinciale 142, km 3.95, Candiolo (TO) 10060, Italy
| | - Francesco Saverio Pezzicoli
- Laboratoire Interdisciplinaire des Sciences du Numérique, Université Paris-Saclay, Gif-sur-Yvette, 91190 Île-de-France, France
| | - Marco Zamparo
- Dipartimento di Fisica, Università degli Studi di Bari, via Amendola 173, 70126 Bari, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Via Pietro Giuria 1, 10125 Torino, Italy
| | - Luca Dall'Asta
- Institute of Condensed Matter Physics and Complex Systems, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Italian Institute for Genomic Medicine and Candiolo Cancer Institute IRCCS, Strada Provinciale 142, km 3.95, Candiolo (TO) 10060, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Via Pietro Giuria 1, 10125 Torino, Italy
- Collegio Carlo Alberto, Piazza Arbarello 8, 10122 Torino, Italy
| | - Andrea Gamba
- Institute of Condensed Matter Physics and Complex Systems, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- Italian Institute for Genomic Medicine and Candiolo Cancer Institute IRCCS, Strada Provinciale 142, km 3.95, Candiolo (TO) 10060, Italy
- Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Via Pietro Giuria 1, 10125 Torino, Italy
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45
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Akatay AA, Wu T, Djakbarova U, Thompson C, Cocucci E, Zandi R, Rudnick J, Kural C. Endocytosis at extremes: Formation and internalization of giant clathrin-coated pits under elevated membrane tension. Front Mol Biosci 2022; 9:959737. [PMID: 36213118 PMCID: PMC9532848 DOI: 10.3389/fmolb.2022.959737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Internalization of clathrin-coated vesicles from the plasma membrane constitutes the major endocytic route for receptors and their ligands. Dynamic and structural properties of endocytic clathrin coats are regulated by the mechanical properties of the plasma membrane. Here, we used conventional fluorescence imaging and multiple modes of structured illumination microscopy (SIM) to image formation of endocytic clathrin coats within live cells and tissues of developing fruit fly embryos. High resolution in both spatial and temporal domains allowed us to detect and characterize distinct classes of clathrin-coated structures. Aside from the clathrin pits and plaques detected in distinct embryonic tissues, we report, for the first time, formation of giant coated pits (GCPs) that can be up to two orders of magnitude larger than the canonical pits. In cultured cells, we show that GCP formation is induced by increased membrane tension. GCPs take longer to grow but their mechanism of curvature generation is the same as the canonical pits. We also demonstrate that GCPs split into smaller fragments during internalization. Considering the supporting roles played by actin filament dynamics under mechanically stringent conditions that slow down completion of clathrin coats, we suggest that local changes in the coat curvature driven by actin machinery can drive splitting and internalization of GCPs.
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Affiliation(s)
- Ahmet Ata Akatay
- Department of Physics, The Ohio State University, Columbus, OH, United States
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Tianyao Wu
- Department of Physics, The Ohio State University, Columbus, OH, United States
| | - Umidahan Djakbarova
- Department of Physics, The Ohio State University, Columbus, OH, United States
| | - Cristopher Thompson
- Department of Physics, The Ohio State University, Columbus, OH, United States
| | - Emanuele Cocucci
- Division of Pharmaceutics and Pharmacology, College of Pharmacy and Comprehensive Cancer Center, The Ohio State University, Columbus, OH, United States
| | - Roya Zandi
- Department of Physics and Astronomy, University of California, Riverside, CA, United States
| | - Joseph Rudnick
- Department of Physics and Astronomy, University of California, Los Angeles, CA, United States
| | - Comert Kural
- Department of Physics, The Ohio State University, Columbus, OH, United States
- Interdisciplinary Biophysics Graduate Program, The Ohio State University, Columbus, OH, United States
- *Correspondence: Comert Kural,
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Huang D, Chen H, Shen M, Tao J, Chen S, Yin L, Zhou W, Wang X, Xiao R, Li R. Recent advances on the transport of microplastics/nanoplastics in abiotic and biotic compartments. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129515. [PMID: 35816806 DOI: 10.1016/j.jhazmat.2022.129515] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 05/14/2023]
Abstract
Plastics enter the environment and break up into microplastics (MPs) and even nanoplastics (NPs) by biotic and abiotic weathering. These small particles are widely distributed in the environmental media and extremely mobile and reactive, easily suspending in the air, infiltrating into the soil, and interacting with biota. Current research on MPs/NPs is either in the abiotic or biotic compartments, with little attention paid to the fact that the biosphere as a whole. To better understand the complex and continuous movement of plastics from biological to planetary scales, this review firstly discusses the transport processes and drivers of microplastics in the macroscopic compartment. We then summarize insightfully the uptake pathways of MPs/NPs by different species in the ecological compartment and analyze the internalization mechanisms of NPs in the organism. Finally, we highlight the bioaccumulation potential, biomagnification effects and trophic transfer of MPs/NPs in the food chain. This work is expected to provide a meaningful theoretical body of knowledge for understanding the biogeochemical cycles of plastics.
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Affiliation(s)
- Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
| | - Haojie Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Maocai Shen
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Jiaxi Tao
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Sha Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Lingshi Yin
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Wei Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Xinya Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Ruihao Xiao
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Ruijin Li
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
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47
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Marchi PM, Marrone L, Brasseur L, Coens A, Webster CP, Bousset L, Destro M, Smith EF, Walther CG, Alfred V, Marroccella R, Graves EJ, Robinson D, Shaw AC, Wan LM, Grierson AJ, Ebbens SJ, De Vos KJ, Hautbergue GM, Ferraiuolo L, Melki R, Azzouz M. C9ORF72-derived poly-GA DPRs undergo endocytic uptake in iAstrocytes and spread to motor neurons. Life Sci Alliance 2022; 5:5/9/e202101276. [PMID: 35568435 PMCID: PMC9108631 DOI: 10.26508/lsa.202101276] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 11/24/2022] Open
Abstract
Dipeptide repeat (DPR) proteins are aggregation-prone polypeptides encoded by the pathogenic GGGGCC repeat expansion in the C9ORF72 gene, the most common genetic cause of amyotrophic lateral sclerosis and frontotemporal dementia. In this study, we focus on the role of poly-GA DPRs in disease spread. We demonstrate that recombinant poly-GA oligomers can directly convert into solid-like aggregates and form characteristic β-sheet fibrils in vitro. To dissect the process of cell-to-cell DPR transmission, we closely follow the fate of poly-GA DPRs in either their oligomeric or fibrillized form after administration in the cell culture medium. We observe that poly-GA DPRs are taken up via dynamin-dependent and -independent endocytosis, eventually converging at the lysosomal compartment and leading to axonal swellings in neurons. We then use a co-culture system to demonstrate astrocyte-to-motor neuron DPR propagation, showing that astrocytes may internalise and release aberrant peptides in disease pathogenesis. Overall, our results shed light on the mechanisms of poly-GA cellular uptake and propagation, suggesting lysosomal impairment as a possible feature underlying the cellular pathogenicity of these DPR species.
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Affiliation(s)
- Paolo M Marchi
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Lara Marrone
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Laurent Brasseur
- The French Alternative Energies and Atomic Energy Commission (CEA), Institut François Jacob (MIRcen) and The French National Centre for Scientific Research (CNRS), Laboratory of Neurodegenerative Diseases (UMR9199), Fontenay-aux-Roses, France
| | - Audrey Coens
- The French Alternative Energies and Atomic Energy Commission (CEA), Institut François Jacob (MIRcen) and The French National Centre for Scientific Research (CNRS), Laboratory of Neurodegenerative Diseases (UMR9199), Fontenay-aux-Roses, France
| | - Christopher P Webster
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Luc Bousset
- The French Alternative Energies and Atomic Energy Commission (CEA), Institut François Jacob (MIRcen) and The French National Centre for Scientific Research (CNRS), Laboratory of Neurodegenerative Diseases (UMR9199), Fontenay-aux-Roses, France
| | - Marco Destro
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Emma F Smith
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK.,Centre for Membrane Interactions and Dynamics, University of Sheffield, Western Bank, Sheffield, UK
| | - Christa G Walther
- The Wolfson Light Microscopy Facility, University of Sheffield, Sheffield, UK
| | - Victor Alfred
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Raffaele Marroccella
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Emily J Graves
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Darren Robinson
- The Wolfson Light Microscopy Facility, University of Sheffield, Sheffield, UK
| | - Allan C Shaw
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Lai Mei Wan
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Andrew J Grierson
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Stephen J Ebbens
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, UK
| | - Kurt J De Vos
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK.,Centre for Membrane Interactions and Dynamics, University of Sheffield, Western Bank, Sheffield, UK
| | - Guillaume M Hautbergue
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Laura Ferraiuolo
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK.,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
| | - Ronald Melki
- The French Alternative Energies and Atomic Energy Commission (CEA), Institut François Jacob (MIRcen) and The French National Centre for Scientific Research (CNRS), Laboratory of Neurodegenerative Diseases (UMR9199), Fontenay-aux-Roses, France
| | - Mimoun Azzouz
- Sheffield Institute for Translational Neuroscience (SITraN), Department of Neuroscience, University of Sheffield, Sheffield, UK .,Neuroscience Institute, University of Sheffield, Western Bank, Sheffield, UK
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48
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Cong VT, Houng JL, Kavallaris M, Chen X, Tilley RD, Gooding JJ. How can we use the endocytosis pathways to design nanoparticle drug-delivery vehicles to target cancer cells over healthy cells? Chem Soc Rev 2022; 51:7531-7559. [PMID: 35938511 DOI: 10.1039/d1cs00707f] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Targeted drug delivery in cancer typically focuses on maximising the endocytosis of drugs into the diseased cells. However, there has been less focus on exploiting the differences in the endocytosis pathways of cancer cells versus non-cancer cells. An understanding of the endocytosis pathways in both cancer and non-cancer cells allows for the design of nanoparticles to deliver drugs to cancer cells whilst restricting healthy cells from taking up anticancer drugs, thus efficiently killing the cancer cells. Herein we compare the differences in the endocytosis pathways of cancer and healthy cells. Second, we highlight the importance of the physicochemical properties of nanoparticles (size, shape, stiffness, and surface chemistry) on cellular uptake and how they can be adjusted to selectively target the dominated endocytosis pathway of cancer cells over healthy cells and to deliver anticancer drug to the target cells. The review generates new thought in the design of cancer-selective nanoparticles based on the endocytosis pathways.
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Affiliation(s)
- Vu Thanh Cong
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia. .,Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Jacinta L Houng
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia. .,Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Maria Kavallaris
- Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia.,Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Sydney, NSW 2052, Australia.,School of Clinical Medicine, UNSW Medicine & Health, University of New South Wales, Sydney, NSW 2052, Australia
| | - Xin Chen
- School of Chemical Engineering and Technology, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, Xi'an Jiao Tong University, Xi'an, China
| | - Richard D Tilley
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
| | - J Justin Gooding
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia. .,Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052, Australia
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49
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Rotavirus VP4 Epitope of a Broadly Neutralizing Human Antibody Defined by Its Structure Bound with an Attenuated-Strain Virion. J Virol 2022; 96:e0062722. [PMID: 35924923 PMCID: PMC9400500 DOI: 10.1128/jvi.00627-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Rotavirus live-attenuated vaccines, both mono- and pentavalent, generate broadly heterotypic protection. B-cells isolated from adults encode neutralizing antibodies, some with affinity for VP5*, that afford broad protection in mice. We have mapped the epitope of one such antibody by determining the high-resolution cryo-EM structure of its antigen-binding fragment (Fab) bound to the virion of a candidate vaccine strain, CDC-9. The Fab contacts both the distal end of a VP5* β-barrel domain and the two VP8* lectin-like domains at the tip of a projecting spike. Its interactions with VP8* do not impinge on the likely receptor-binding site, suggesting that the mechanism of neutralization is at a step subsequent to initial attachment. We also examined structures of CDC-9 virions from two different stages of serial passaging. Nearly all the VP4 (cleaved to VP8*/VP5*) spikes on particles from the earlier passage (wild-type isolate) had transitioned from the "upright" conformation present on fully infectious virions to the "reversed" conformation that is probably the end state of membrane insertion, unable to mediate penetration, consistent with the very low in vitro infectivity of the wild-type isolate. About half the VP4 spikes were upright on particles from the later passage, which had recovered substantial in vitro infectivity but had acquired an attenuated phenotype in neonatal rats. A mutation in VP4 that occurred during passaging appears to stabilize the interface at the apex of the spike and could account for the greater stability of the upright spikes on the late-passage, attenuated isolate. IMPORTANCE Rotavirus live-attenuated vaccines generate broadly heterotypic protection, and B-cells isolated from adults encode antibodies that are broadly protective in mice. Determining the structural and mechanistic basis of broad protection can contribute to understanding the current limitations of vaccine efficacy in developing countries. The structure of an attenuated human rotavirus isolate (CDC-9) bound with the Fab fragment of a broadly heterotypic protective antibody shows that protection is probably due to inhibition of the conformational transition in the viral spike protein (VP4) critical for viral penetration, rather than to inhibition of receptor binding. A comparison of structures of CDC-9 virus particles at two stages of serial passaging supports a proposed mechanism for initial steps in rotavirus membrane penetration.
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50
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Rao VB, Zhu J. Bacteriophage T4 as a nanovehicle for delivery of genes and therapeutics into human cells. Curr Opin Virol 2022; 55:101255. [PMID: 35952598 DOI: 10.1016/j.coviro.2022.101255] [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: 07/02/2022] [Accepted: 07/09/2022] [Indexed: 11/18/2022]
Abstract
The ability to deliver therapeutic genes and biomolecules into a human cell and restore a defective function has been the holy grail of medicine. Adeno-associated viruses and lentiviruses have been extensively used as delivery vehicles, but their capacity is limited to one (or two) gene(s). Bacteriophages are emerging as novel vehicles for gene therapy. The large 120 × 86-nm T4 capsid allows engineering of both its surface and its interior to incorporate combinations of DNAs, RNAs, proteins, and their complexes. In vitro assembly using purified components allows customization for various applications and for individualized therapies. Its large capacity, cell-targeting capability, safety, and inexpensive manufacturing could open unprecedented new possibilities for gene, cancer, and stem cell therapies. However, efficient entry into primary human cells and intracellular trafficking are significant barriers that must be overcome by gene engineering and evolution in order to translate phage-delivery technology from bench to bedside.
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Affiliation(s)
- Venigalla B Rao
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of America, Washington, DC 20064, USA.
| | - Jingen Zhu
- Bacteriophage Medical Research Center, Department of Biology, The Catholic University of America, Washington, DC 20064, USA
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