1
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Sunna S, Bowen C, Zeng H, Rayaprolu S, Kumar P, Bagchi P, Dammer EB, Guo Q, Duong DM, Bitarafan S, Natu A, Wood L, Seyfried NT, Rangaraju S. Cellular Proteomic Profiling Using Proximity Labeling by TurboID-NES in Microglial and Neuronal Cell Lines. Mol Cell Proteomics 2023; 22:100546. [PMID: 37061046 PMCID: PMC10205547 DOI: 10.1016/j.mcpro.2023.100546] [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: 10/12/2022] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 04/17/2023] Open
Abstract
Different brain cell types play distinct roles in brain development and disease. Molecular characterization of cell-specific mechanisms using cell type-specific approaches at the protein (proteomic) level can provide biological and therapeutic insights. To overcome the barriers of conventional isolation-based methods for cell type-specific proteomics, in vivo proteomic labeling with proximity-dependent biotinylation of cytosolic proteins using biotin ligase TurboID, coupled with mass spectrometry (MS) of labeled proteins, emerged as a powerful strategy for cell type-specific proteomics in the native state of cells without the need for cellular isolation. To complement in vivo proximity labeling approaches, in vitro studies are needed to ensure that cellular proteomes using the TurboID approach are representative of the whole-cell proteome and capture cellular responses to stimuli without disruption of cellular processes. To address this, we generated murine neuroblastoma (N2A) and microglial (BV2) lines stably expressing cytosolic TurboID to biotinylate the cellular proteome for downstream purification and analysis using MS. TurboID-mediated biotinylation captured 59% of BV2 and 65% of N2A proteomes under homeostatic conditions. TurboID labeled endolysosome, translation, vesicle, and signaling proteins in BV2 microglia and synaptic, neuron projection, and microtubule proteins in N2A neurons. TurboID expression and biotinylation minimally impacted homeostatic cellular proteomes of BV2 and N2A cells and did not affect lipopolysaccharide-mediated cytokine production or resting cellular respiration in BV2 cells. MS analysis of the microglial biotin-labeled proteins captured the impact of lipopolysaccharide treatment (>500 differentially abundant proteins) including increased canonical proinflammatory proteins (Il1a, Irg1, and Oasl1) and decreased anti-inflammatory proteins (Arg1 and Mgl2).
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Affiliation(s)
- Sydney Sunna
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA
| | - Christine Bowen
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA
| | - Hollis Zeng
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA
| | - Sruti Rayaprolu
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA
| | - Prateek Kumar
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA
| | - Pritha Bagchi
- Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA; Emory Integrated Proteomics Core, Emory University, Atlanta, Georgia, USA
| | - Eric B Dammer
- Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA; Emory Integrated Proteomics Core, Emory University, Atlanta, Georgia, USA
| | - Qi Guo
- Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA; Emory Integrated Proteomics Core, Emory University, Atlanta, Georgia, USA
| | - Duc M Duong
- Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA; Emory Integrated Proteomics Core, Emory University, Atlanta, Georgia, USA
| | - Sara Bitarafan
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, and Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Aditya Natu
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA
| | - Levi Wood
- George W. Woodruff School of Mechanical Engineering, Wallace H. Coulter Department of Biomedical Engineering, and Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Nicholas T Seyfried
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA; Department of Biochemistry, Emory University, Atlanta, Georgia, USA; Emory Integrated Proteomics Core, Emory University, Atlanta, Georgia, USA.
| | - Srikant Rangaraju
- Department of Neurology, Emory University, Atlanta Georgia, USA; Center for Neurodegenerative Diseases, Emory University, Atlanta, Georgia, USA.
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2
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Barría MI, Alvarez RA, Law K, Wolfson DL, Huser T, Chen BK. Endocytic Motif on a Biotin-Tagged HIV-1 Env Modulates the Co-Transfer of Env and Gag during Cell-to-Cell Transmission. Viruses 2021; 13:v13091729. [PMID: 34578310 PMCID: PMC8471404 DOI: 10.3390/v13091729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/17/2021] [Accepted: 08/24/2021] [Indexed: 12/24/2022] Open
Abstract
During HIV-1 transmission through T cell virological synapses, the recruitment of the envelope (Env) glycoprotein to the site of cell-cell contact is important for adhesion and for packaging onto nascent virus particles which assemble at the site. Live imaging studies in CD4 T cells have captured the rapid recruitment of the viral structural protein Gag to VSs. We explored the role of endocytic trafficking of Env initiated by a membrane proximal tyrosine motif during HIV transfer into target cells and examined the factors that allow Gag and Env to be transferred together across the synapse. To facilitate tracking of Env in live cells, we adapted an Env tagging method and introduced a biotin acceptor peptide (BAP) into the V4 loop of Env gp120, enabling sensitive fluorescent tracking of V4-biotinylated Env. The BAP-tagged and biotinylated HIVs were replication-competent in cell-free and cell-to-cell infection assays. Live cell fluorescent imaging experiments showed rapid internalized cell surface Env on infected cells. Cell-cell transfer experiments conducted with the Env endocytosis mutant (Y712A) showed increased transfer of Env. Paradoxically, this increase in Env transfer was associated with significantly reduced Gag transfer into target cells, when compared to viral transfer associated with WT Env. This Y712A Env mutant also exhibited an altered Gag/biotin Env fluorescence ratio during transfer that correlated with decreased productive cell-to-cell infection. These results may suggest that the internalization of Env into recycling pools plays an important role in the coordinated transfer of Gag and Env across the VS, which optimizes productive infection in target cells.
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Affiliation(s)
- María Inés Barría
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Puerto Montt 5501842, Chile;
| | - Raymond A. Alvarez
- Division of Infectious Diseases, Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.A.A.); (K.L.)
| | - Kenneth Law
- Division of Infectious Diseases, Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (R.A.A.); (K.L.)
| | - Deanna L. Wolfson
- Department of Physics and Technology, UiT The Arctic University of Norway, NO-9037 Tromsø, Norway;
| | - Thomas Huser
- Biomolecular Photonics, Department of Physics, Bielefeld University, 33615 Bielefeld, Germany;
| | - Benjamin K. Chen
- Facultad de Medicina y Ciencia, Universidad San Sebastián, Puerto Montt 5501842, Chile;
- Correspondence:
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3
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Uretmen Kagiali ZC, Saner N, Akdag M, Sanal E, Degirmenci BS, Mollaoglu G, Ozlu N. CLIC4 and CLIC1 bridge plasma membrane and cortical actin network for a successful cytokinesis. Life Sci Alliance 2019; 3:3/2/e201900558. [PMID: 31879279 PMCID: PMC6933522 DOI: 10.26508/lsa.201900558] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 11/24/2022] Open
Abstract
CLIC members are required for the progression of cytokinesis by coupling the plasma membrane and cortical actin network at the cleavage furrow and polar cortex. CLIC4 and CLIC1 are members of the well-conserved chloride intracellular channel proteins (CLICs) structurally related to glutathione-S-transferases. Here, we report new roles of CLICs in cytokinesis. At the onset of cytokinesis, CLIC4 accumulates at the cleavage furrow and later localizes to the midbody in a RhoA-dependent manner. The cell cycle–dependent localization of CLIC4 is abolished when its glutathione S-transferase activity–related residues (C35A and F37D) are mutated. Ezrin, anillin, and ALIX are identified as interaction partners of CLIC4 at the cleavage furrow and midbody. Strikingly, CLIC4 facilitates the activation of ezrin at the cleavage furrow and reciprocally inhibition of ezrin activation diminishes the translocation of CLIC4 to the cleavage furrow. Furthermore, knockouts of CLIC4and CLIC1 cause abnormal blebbing at the polar cortex and regression of the cleavage furrow at late cytokinesis leading to multinucleated cells. We conclude that CLIC4 and CLIC1 function together with ezrin where they bridge plasma membrane and actin cytoskeleton at the polar cortex and cleavage furrow to promote cortical stability and successful completion of cytokinesis in mammalian cells.
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Affiliation(s)
| | - Nazan Saner
- Department of Molecular Biology and Genetics, Koç University, Istanbul, Turkey
| | - Mehmet Akdag
- Department of Molecular Biology and Genetics, Koç University, Istanbul, Turkey
| | - Erdem Sanal
- Department of Molecular Biology and Genetics, Koç University, Istanbul, Turkey
| | | | - Gurkan Mollaoglu
- Department of Molecular Biology and Genetics, Koç University, Istanbul, Turkey
| | - Nurhan Ozlu
- Department of Molecular Biology and Genetics, Koç University, Istanbul, Turkey .,Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
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4
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Agramunt J, Saltor L, Pedroso E, Grandas A. Compatibility between the cysteine-cyclopentenedione reaction and the copper(i)-catalyzed azide-alkyne cycloaddition. Org Biomol Chem 2018; 16:9185-9190. [PMID: 30457146 DOI: 10.1039/c8ob02451k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cysteine-cyclopentenedione reaction can be combined with the copper(i)-catalyzed azide-alkyne cycloaddition provided that the former is carried out first. If not, the azide and the cyclopentenedione undergo a 1,3-dipolar cycloaddition, which furnishes triazole-containing compounds and products resulting from nitrogen loss. Both of these products were fully characterized. Attempts to obtain either of them as the main compound or to drive the reaction nearly to completion were unsuccessful, which points to the azide-cyclopentenedione reaction as not being useful for bioconjugation.
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Affiliation(s)
- Jordi Agramunt
- Departament de Química Inorgànica i Orgànica (secció de Química Orgànica) and IBUB, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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5
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Jaykumar AB, Caceres PS, Ortiz PA. Single-molecule labeling for studying trafficking of renal transporters. Am J Physiol Renal Physiol 2018; 315:F1243-F1249. [PMID: 30043625 DOI: 10.1152/ajprenal.00082.2017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The ability to detect and track single molecules presents the advantage of visualizing the complex behavior of transmembrane proteins with a time and space resolution that would otherwise be lost with traditional labeling and biochemical techniques. Development of new imaging probes has provided a robust method to study their trafficking and surface dynamics. This mini-review focuses on the current technology available for single-molecule labeling of transmembrane proteins, their advantages, and limitations. We also discuss the application of these techniques to the study of renal transporter trafficking in light of recent research.
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Affiliation(s)
- Ankita Bachhawat Jaykumar
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital , Detroit, Michigan.,Department of Physiology, Wayne State University School of Medicine , Detroit, Michigan
| | - Paulo S Caceres
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital , Detroit, Michigan
| | - Pablo A Ortiz
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital , Detroit, Michigan.,Department of Physiology, Wayne State University School of Medicine , Detroit, Michigan
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6
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Pal K, Sharma A, Koner AL. Synthesis of Two-Photon Active Tricomponent Fluorescent Probe for Distinguishment of Biotin Receptor Positive and Negative Cells and Imaging 3D-Spheroid. Org Lett 2018; 20:6425-6429. [PMID: 30295496 DOI: 10.1021/acs.orglett.8b02748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A fluorescence microscopy-based distinguishment between biotin receptor (BiR) positive and negative cell lines via receptor-mediated endocytosis has been demonstrated. A water-soluble, three-component, two-photon (2P) active solvatofluorochromic probe has been designed and synthesized. The applicability of the probe for 2P microscopy and 3D-spheroid was also assessed.
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Affiliation(s)
- Kaushik Pal
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal - 462066 , India
| | - Aman Sharma
- ExoCan Healthcare Technologies Pvt. Ltd. , Pune - 411008 , India
| | - Apurba L Koner
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal - 462066 , India
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7
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Vannecke W, Ampe C, Van Troys M, Beltramo M, Madder A. Cross-Linking Furan-Modified Kisspeptin-10 to the KISS Receptor. ACS Chem Biol 2017; 12:2191-2200. [PMID: 28714670 DOI: 10.1021/acschembio.7b00396] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chemical cross-linking is well-established for investigating protein-protein interactions. Traditionally, photo cross-linking is used but is associated with problems of selectivity and UV toxicity in a biological context. We here describe, with live cells and under normal growth conditions, selective cross-linking of a furan-modified peptide ligand to its membrane-presented receptor with zero toxicity, high efficiency, and spatio-specificity. Furan-modified kisspeptin-10 is covalently coupled to its glycosylated membrane receptor, GPR54(KISS1R). This newly expands the applicability of furan-mediated cross-linking not only to protein-protein cross-linking but also to cross-linking in situ. Moreover, in our earlier reports on nucleic acid interstrand cross-linking, furan activation required external triggers of oxidation (via addition of N-bromo succinimide or singlet oxygen). In contrast, we here show, for multiple cell lines, the spontaneous endogenous oxidation of the furan moiety with concurrent selective cross-link formation. We propose that reactive oxygen species produced by NADPH oxidase (NOX) enzymes form the cellular source establishing furan oxidation.
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Affiliation(s)
- Willem Vannecke
- Organic
and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan
281 S4, B-9000 Ghent, Belgium
- Department
of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Christophe Ampe
- Department
of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Marleen Van Troys
- Department
of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
| | - Massimiliano Beltramo
- Equipe
Neuroendocrinologie Moleculaire de la Reproduction, Physiologie de
la Reproduction et des Comportements, Centre INRA Val de Loire, 37380 Nouzilly, France
| | - Annemieke Madder
- Organic
and Biomimetic Chemistry Research Group, Ghent University, Krijgslaan
281 S4, B-9000 Ghent, Belgium
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8
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Li A, Wu Y, Linnoila J, Pulli B, Wang C, Zeller M, Ali M, Lewandrowski GK, Li J, Tricot B, Keliher E, Wojtkiewicz GR, Fulci G, Feng X, Tannous BA, Yao Z, Chen JW. Surface biotinylation of cytotoxic T lymphocytes for in vivo tracking of tumor immunotherapy in murine models. Cancer Immunol Immunother 2016; 65:1545-1554. [PMID: 27722909 DOI: 10.1007/s00262-016-1911-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 09/29/2016] [Indexed: 10/20/2022]
Abstract
Currently, there is no stable and flexible method to label and track cytotoxic T lymphocytes (CTLs) in vivo in CTL immunotherapy. We aimed to evaluate whether the sulfo-hydroxysuccinimide (NHS)-biotin-streptavidin (SA) platform could chemically modify the cell surface of CTLs for in vivo tracking. CD8+ T lymphocytes were labeled with sulfo-NHS-biotin under different conditions and then incubated with SA-Alexa647. Labeling efficiency was proportional to sulfo-NHS-biotin concentration. CD8+ T lymphocytes could be labeled with higher efficiency with sulfo-NHS-biotin in DPBS than in RPMI (P < 0.05). Incubation temperature was not a key factor. CTLs maintained sufficient labeling for at least 72 h (P < 0.05), without altering cell viability. After co-culturing labeled CTLs with mouse glioma stem cells (GSCs) engineered to present biotin on their surface, targeting CTLs could specifically target biotin-presenting GSCs and inhibited cell proliferation (P < 0.01) and tumor spheres formation. In a biotin-presenting GSC brain tumor model, targeting CTLs could be detected in biotin-presenting gliomas in mouse brains but not in the non-tumor-bearing contralateral hemispheres (P < 0.05). In vivo fluorescent molecular tomography imaging in a subcutaneous U87 mouse model confirmed that targeting CTLs homed in on the biotin-presenting U87 tumors but not the control U87 tumors. PET imaging with 89Zr-deferoxamine-biotin and SA showed a rapid clearance of the PET signal over 24 h in the control tumor, while only minimally decreased in the targeted tumor. Thus, sulfo-NHS-biotin-SA labeling is an efficient method to noninvasively track the migration of adoptive transferred CTLs and does not alter CTL viability or interfere with CTL-mediated cytotoxic activity.
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Affiliation(s)
- Anning Li
- Department of Radiology, Huashan Hospital, Fudan University, 12 Urumchi Road, Shanghai, 200040, China.,Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA.,Department of Radiology, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan, 250012, China
| | - Yue Wu
- Department of Radiology, Huashan Hospital, Fudan University, 12 Urumchi Road, Shanghai, 200040, China.,Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Jenny Linnoila
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Benjamin Pulli
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA.,Department of Radiology, Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Cuihua Wang
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Matthias Zeller
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Muhammad Ali
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Grant K Lewandrowski
- Molecular Neurogenetics Unit, Neuroscience Center, 149 13th St., Charlestown, MA, 02129, USA
| | - Jinghui Li
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Benoit Tricot
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Edmund Keliher
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Gregory R Wojtkiewicz
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA
| | - Giulia Fulci
- Brain Tumor Research Center, Simches Research Building, Neurosurgery Service, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Xiaoyuan Feng
- Department of Radiology, Huashan Hospital, Fudan University, 12 Urumchi Road, Shanghai, 200040, China
| | - Bakhos A Tannous
- Molecular Neurogenetics Unit, Neuroscience Center, 149 13th St., Charlestown, MA, 02129, USA
| | - Zhenwei Yao
- Department of Radiology, Huashan Hospital, Fudan University, 12 Urumchi Road, Shanghai, 200040, China.
| | - John W Chen
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, 185 Cambridge Street, Boston, MA, 02114, USA. .,Department of Radiology, Institute for Innovation in Imaging, Massachusetts General Hospital, Boston, MA, 02114, USA.
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9
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Jaykumar AB, Caceres PS, Sablaban I, Tannous BA, Ortiz PA. Real-time monitoring of NKCC2 endocytosis by total internal reflection fluorescence (TIRF) microscopy. Am J Physiol Renal Physiol 2015; 310:F183-91. [PMID: 26538436 DOI: 10.1152/ajprenal.00104.2015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 10/30/2015] [Indexed: 11/22/2022] Open
Abstract
The apical Na-K-2Cl cotransporter (NKCC2) mediates NaCl reabsorption by the thick ascending limb (TAL). The amount of NKCC2 at the apical membrane of TAL cells is determined by exocytic delivery, recycling, and endocytosis. Surface biotinylation allows measurement of NKCC2 endocytosis, but it has low time resolution and does not allow imaging of the dynamic process of endocytosis. We hypothesized that total internal reflection fluorescence (TIRF) microscopy imaging of labeled NKCC2 would allow monitoring of NKCC2 endocytosis in polarized Madin-Darby canine kidney (MDCK) and TAL cells. Thus we generated a NKCC2 construct containing a biotin acceptor domain (BAD) sequence between the transmembrane domains 5 and 6. Once expressed in polarized MDCK or TAL cells, surface NKCC2 was specifically biotinylated by exogenous biotin ligase (BirA). We also demonstrate that expression of a secretory form of BirA in TAL cells induces metabolic biotinylation of NKCC2. Labeling biotinylated surface NKCC2 with fluorescent streptavidin showed that most apical NKCC2 was located within small discrete domains or clusters referred to as "puncta" on the TIRF field. NKCC2 puncta were observed to disappear from the TIRF field, indicating an endocytic event which led to a decrease in the number of surface puncta at a rate of 1.18 ± 0.16%/min in MDCK cells, and a rate 1.09 ± 0.08%/min in TAL cells (n = 5). Treating cells with a cholesterol-chelating agent (methyl-β-cyclodextrin) completely blocked NKCC2 endocytosis. We conclude that TIRF microscopy of labeled NKCC2 allows the dynamic imaging of individual endocytic events at the apical membrane of TAL cells.
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Affiliation(s)
- Ankita Bachhawat Jaykumar
- Hypertension and Vascular Research, Henry Ford Hospital, Detroit, Michigan; Department of Physiology, Wayne State University, Detroit, Michigan; and
| | - Paulo S Caceres
- Hypertension and Vascular Research, Henry Ford Hospital, Detroit, Michigan; Department of Physiology, Wayne State University, Detroit, Michigan; and
| | - Ibrahim Sablaban
- Hypertension and Vascular Research, Henry Ford Hospital, Detroit, Michigan
| | - Bakhos A Tannous
- Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Pablo A Ortiz
- Hypertension and Vascular Research, Henry Ford Hospital, Detroit, Michigan; Department of Physiology, Wayne State University, Detroit, Michigan; and
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10
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Expression of a biotin acceptor peptide-containing protein with potential incorporation on the lentiviral envelope as a viral surface engineering platform. Res Pharm Sci 2015; 10:268-74. [PMID: 26600854 PMCID: PMC4623616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Lentiviral vectors are among the promising viral based-vectors in gene therapy applications, but the efficiency of their targeting needs to be improved. (Strept)avidin-biotin adaptor system is a novel approach to modify the lentiviral envelope for better targeting properties. Herein, we describe utilization of this adaptor system by designing a candidate envelope protein-bearing biotin acceptor peptide (BAP) and evaluation of its expression in 293T cells. To this end, a DNA sequence containing flexible linkers, a 15-aminoacids BAP and specific membrane regions of a viral protein was designed and synthesized in tandem. The synthesized gene was amplified with polymerase chain reaction to include BglII and SalI restriction sites and subcloned into the same sites of pDisplay vector in frame with HA-tag and myc epitope to construct the pDis-GS-BAP. 293T cells were transfected with pDis-GS-BAP and expression of resulting protein (dis-GS-BAP) was evaluated by Western blotting using anti-HA tag antibody. Efficiency of transfection procedure was evaluated by pEGFP-N1 vector and tracking for green fluorescent protein expression via fluorescence microscopy. Restriction analysis and DNA sequencing confirmed the precision of cloning steps. Fluorescence microscopy indicated above 70% transfection efficiency and Western blot analysis of pDis-GS-BAP-transfected 293T cells showed a protein band of approximately 17 kDa corresponding to the predicted size of dis-GS-BAP protein. These promising results indicate the possibility of cell surface expression and further biotinylation of dis-GS-BAP protein in ongoing studies.
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11
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Lai CP, Mardini O, Ericsson M, Prabhakar S, Maguire C, Chen JW, Tannous BA, Breakefield XO. Dynamic biodistribution of extracellular vesicles in vivo using a multimodal imaging reporter. ACS NANO 2014; 8:483-494. [PMID: 24383518 PMCID: PMC3934350 DOI: 10.1021/nn404945r] [Citation(s) in RCA: 628] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Extracellular vesicles (EVs) are nanosized vesicles released by normal and diseased cells as a novel form of intercellular communication and can serve as an effective therapeutic vehicle for genes and drugs. Yet, much remains unknown about the in vivo properties of EVs such as tissue distribution, blood levels, and urine clearance, important parameters that will define their therapeutic effectiveness and potential toxicity. Here we combined Gaussia luciferase and metabolic biotinylation to create a sensitive EV reporter (EV-GlucB) for multimodal imaging in vivo, as well as monitoring of EV levels in the organs and biofluids ex vivo after administration of EVs. Bioluminescence and fluorescence-mediated tomography imaging on mice displayed a predominant localization of intravenously administered EVs in the spleen followed by the liver. Monitoring EV signal in the organs, blood, and urine further revealed that the EVs first undergo a rapid distribution phase followed by a longer elimination phase via hepatic and renal routes within six hours, which are both faster than previously reported using dye-labeled EVs. Moreover, we demonstrate systemically injected EVs can be delivered to tumor sites within an hour following injection. Altogether, we show the EVs are dynamically processed in vivo with accurate spatiotemporal resolution and target a number of normal organs as well as tumors with implications for disease pathology and therapeutic design.
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Affiliation(s)
- Charles P. Lai
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Program in Neuroscience, Harvard Medical School, Boston, Massachusetts 02115, USA
- Corresponding Author Charles P. Lai, ; Xandra O. Breakefield, ; Massachusetts General Hospital, 149 13th St., Charlestown, MA 02129
| | - Osama Mardini
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
| | - Maria Ericsson
- Conventional Electron Microscopy Core, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Shilpa Prabhakar
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
| | - Casey Maguire
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
| | - John W. Chen
- Center for Systems Biology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Center for Molecular Imaging Research, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
| | - Bakhos A. Tannous
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Program in Neuroscience, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Xandra O. Breakefield
- Department of Neurology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts 02129, USA
- Program in Neuroscience, Harvard Medical School, Boston, Massachusetts 02115, USA
- Corresponding Author Charles P. Lai, ; Xandra O. Breakefield, ; Massachusetts General Hospital, 149 13th St., Charlestown, MA 02129
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12
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Ta HT, Peter K, Hagemeyer CE. Enzymatic Antibody Tagging: Toward a Universal Biocompatible Targeting Tool. Trends Cardiovasc Med 2012; 22:105-11. [DOI: 10.1016/j.tcm.2012.07.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Niers JM, Chen JW, Lewandrowski G, Kerami M, Garanger E, Wojtkiewicz G, Waterman P, Keliher E, Weissleder R, Tannous BA. Single reporter for targeted multimodal in vivo imaging. J Am Chem Soc 2012; 134:5149-56. [PMID: 22397453 PMCID: PMC3310895 DOI: 10.1021/ja209868g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We have developed a multifaceted, highly specific reporter for multimodal in vivo imaging and applied it for detection of brain tumors. A metabolically biotinylated, membrane-bound form of Gaussia luciferase was synthesized, termed mbGluc-biotin. We engineered glioma cells to express this reporter and showed that brain tumor formation can be temporally imaged by bioluminescence following systemic administration of coelenterazine. Brain tumors expressing this reporter had high sensitivity for detection by magnetic resonance and fluorescence tomographic imaging upon injection of streptavidin conjugated to magnetic nanoparticles or fluorophore, respectively. Moreover, single photon emission computed tomography showed enhanced imaging of these tumors upon injection with streptavidin complexed to (111)In-DTPA-biotin. This work shows for the first time a single small reporter (∼40 kDa) which can be monitored with most available molecular imaging modalities and can be extended for single cell imaging using intravital microscopy, allowing real-time tracking of any cell expressing it in vivo.
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Affiliation(s)
- Johanna M Niers
- Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Department of Neurology, Massachusetts General Hospital, Boston, USA
- Neuro-oncology Research Group, Department of Neurosurgery, VU Medical Center, Cancer Center Amsterdam, 1007 MB Amsterdam, The Netherlands
| | - John W Chen
- Center for Systems Biology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
| | - Grant Lewandrowski
- Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Department of Neurology, Massachusetts General Hospital, Boston, USA
| | - Mariam Kerami
- Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Department of Neurology, Massachusetts General Hospital, Boston, USA
- Neuro-oncology Research Group, Department of Neurosurgery, VU Medical Center, Cancer Center Amsterdam, 1007 MB Amsterdam, The Netherlands
| | | | - Greg Wojtkiewicz
- Center for Systems Biology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
| | - Peter Waterman
- Center for Systems Biology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
| | - Edmund Keliher
- Center for Systems Biology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
| | - Bakhos A. Tannous
- Experimental Therapeutics and Molecular Imaging Laboratory, Neuroscience Center, Department of Neurology, Massachusetts General Hospital, Boston, USA
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital, Boston, USA
- Program in Neuroscience, Harvard Medical School, Boston, USA
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14
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Maguire CA, Balaj L, Sivaraman S, Crommentuijn MHW, Ericsson M, Mincheva-Nilsson L, Baranov V, Gianni D, Tannous BA, Sena-Esteves M, Breakefield XO, Skog J. Microvesicle-associated AAV vector as a novel gene delivery system. Mol Ther 2012; 20:960-71. [PMID: 22314290 DOI: 10.1038/mt.2011.303] [Citation(s) in RCA: 218] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Adeno-associated virus (AAV) vectors have shown remarkable efficiency for gene delivery to cultured cells and in animal models of human disease. However, limitations to AAV vectored gene transfer exist after intravenous transfer, including off-target gene delivery (e.g., liver) and low transduction of target tissue. Here, we show that during production, a fraction of AAV vectors are associated with microvesicles/exosomes, termed vexosomes (vector-exosomes). AAV capsids associated with the surface and in the interior of microvesicles were visualized using electron microscopy. In cultured cells, vexosomes outperformed conventionally purified AAV vectors in transduction efficiency. We found that purified vexosomes were more resistant to a neutralizing anti-AAV antibody compared to conventionally purified AAV. Finally, we show that vexosomes bound to magnetic beads can be attracted to a magnetized area in cultured cells. Vexosomes represent a unique entity which offers a promising strategy to improve gene delivery.
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Affiliation(s)
- Casey A Maguire
- Department of Neurology, Massachusetts General Hospital, and Neuroscience Program, Harvard Medical School, Boston, Massachusetts, USA
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15
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Nanobody-coupled microbubbles as novel molecular tracer. J Control Release 2011; 158:346-53. [PMID: 22197777 DOI: 10.1016/j.jconrel.2011.12.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 12/05/2011] [Accepted: 12/07/2011] [Indexed: 11/21/2022]
Abstract
Camelid-derived single-domain antibody-fragments (~15kDa), called nanobodies, are a new class of molecular tracers that are routinely identified with nanomolar affinity for their target and that are easily tailored for molecular imaging and drug delivery applications. We hypothesized that they are well-suited for the design of targeted microbubbles (μBs) and aimed to develop and characterize eGFP- and VCAM-1-targeted μBs. Anti-eGFP (cAbGFP4) and anti-VCAM-1 (cAbVCAM1-5) nanobodies were site-specifically biotinylated in bacteria. This metabolic biotinylation method yielded functional nanobodies with one biotin located at a distant site of the antigen-binding region of the molecule. The biotinylated nanobodies were coupled to biotinylated lipid μBs via streptavidin-biotin bridging. The ability of μB-cAbGFP4 to recognize eGFP was tested as proof-of-principle by fluorescent microscopy and confirmed the specific binding of eGFP to μB-cAbGFP4. Dynamic flow chamber studies demonstrated the ability of μB-cAbVCAM1-5 to bind VCAM-1 in fast flow (up to 5 dynes/cm(2)). In vivo targeting studies were performed in MC38 tumor-bearing mice (n=4). μB-cAbVCAM1-5 or control μB-cAbGFP4 were injected intravenously and imaged using a contrast-specific ultrasound imaging mode. The echo intensity in the tumor was measured 10min post-injection. μB-cAbVCAM1-5 showed an enhanced signal compared to control μBs (p<0.05). Using metabolic and site-specific biotinylation of nanobodies, a method to develop nanobody-coupled μBs was described. The application of VCAM-1-targeted μBs as novel molecular ultrasound contrast agent was demonstrated both in vitro and in vivo.
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