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Peschke F, Taladriz‐Sender A, Andrews MJ, Watson AJB, Burley GA. Glutathione Mediates Control of Dual Differential Bio-orthogonal Labelling of Biomolecules. Angew Chem Weinheim Bergstr Ger 2023; 135:e202313063. [PMID: 38515866 PMCID: PMC10953330 DOI: 10.1002/ange.202313063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Indexed: 03/23/2024]
Abstract
Traditional approaches to bio-orthogonal reaction discovery have focused on developing reagent pairs that react with each other faster than they are metabolically degraded. Glutathione (GSH) is typically responsible for the deactivation of most bio-orthogonal reagents. Here we demonstrate that GSH promotes a Cu-catalysed (3+2) cycloaddition reaction between an ynamine and an azide. We show that GSH acts as a redox modulator to control the Cu oxidation state in these cycloadditions. Rate enhancement of this reaction is specific for ynamine substrates and is tuneable by the Cu:GSH ratio. This unique GSH-mediated reactivity gradient is then utilised in the dual sequential bio-orthogonal labelling of peptides and oligonucleotides via two distinct chemoselective (3+2) cycloadditions.
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Affiliation(s)
- Frederik Peschke
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Andrea Taladriz‐Sender
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Matthew J. Andrews
- EaStCHEMSchool of ChemistryUniversity of Saint AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Allan J. B. Watson
- EaStCHEMSchool of ChemistryUniversity of Saint AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Glenn A. Burley
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
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2
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Peschke F, Taladriz‐Sender A, Andrews MJ, Watson AJB, Burley GA. Glutathione Mediates Control of Dual Differential Bio-orthogonal Labelling of Biomolecules. Angew Chem Int Ed Engl 2023; 62:e202313063. [PMID: 37906440 PMCID: PMC10952886 DOI: 10.1002/anie.202313063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/02/2023]
Abstract
Traditional approaches to bio-orthogonal reaction discovery have focused on developing reagent pairs that react with each other faster than they are metabolically degraded. Glutathione (GSH) is typically responsible for the deactivation of most bio-orthogonal reagents. Here we demonstrate that GSH promotes a Cu-catalysed (3+2) cycloaddition reaction between an ynamine and an azide. We show that GSH acts as a redox modulator to control the Cu oxidation state in these cycloadditions. Rate enhancement of this reaction is specific for ynamine substrates and is tuneable by the Cu:GSH ratio. This unique GSH-mediated reactivity gradient is then utilised in the dual sequential bio-orthogonal labelling of peptides and oligonucleotides via two distinct chemoselective (3+2) cycloadditions.
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Affiliation(s)
- Frederik Peschke
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Andrea Taladriz‐Sender
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
| | - Matthew J. Andrews
- EaStCHEMSchool of ChemistryUniversity of Saint AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Allan J. B. Watson
- EaStCHEMSchool of ChemistryUniversity of Saint AndrewsNorth HaughSt AndrewsFifeKY16 9STUK
| | - Glenn A. Burley
- Department of Pure & Applied Chemistry & the Strathclyde Centre for Molecular BioscienceUniversity of Strathclyde295 Cathedral StreetGlasgowG1 1XLUK
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3
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Li HK, Wu TS, Kuo YC, Hsiao CW, Yang HP, Lee CY, Leng PJ, Chiang YJ, Cheng ZF, Yang SH, Lin YL, Chen LY, Chen CS, Chen YJ, Hsiao SC, Tang SW. A Novel Allogeneic Rituximab-Conjugated Gamma Delta T Cell Therapy for the Treatment of Relapsed/Refractory B-Cell Lymphoma. Cancers (Basel) 2023; 15:4844. [PMID: 37835538 PMCID: PMC10571679 DOI: 10.3390/cancers15194844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Chimeric antigen receptor T cell (CAR-T) therapy has been applied in the treatment of B-cell lymphoma; however, CAR-T manufacturing requires virus- or non-virus-based genetic modification, which causes high manufacturing costs and potential safety concerns. Antibody-cell conjugation (ACC) technology, which originated from bio-orthogonal click chemistry, provides an efficient approach for arming immune cells with cancer-targeting antibodies without genetic modification. Here, we applied ACC technology in Vγ9Vδ2 T (γδ2 T) cells to generate a novel off-the-shelf CD20-targeting cell therapy ACE1831 (rituximab-conjugated γδ2 T cells) against relapsed/refractory B-cell lymphoma. ACE1831 exhibited superior cytotoxicity against B-cell lymphoma cells and rituximab-resistant cells compared to γδ2 T cells without rituximab conjugation. The in vivo xenograft study demonstrated that ACE1831 treatment strongly suppressed the aggressive proliferation of B-cell lymphoma and prolonged the survival of tumor-bearing mice with no observed toxicity. Mass spectrometry analysis indicated that cell activation receptors including the TCR complex, integrins and cytokine receptors were conjugated with rituximab. Intriguingly, the antigen recognition of the ACC-linked antibody/receptor complex stimulated NFAT activation and contributed to ACE1831-mediated cytotoxicity against CD20-expressing cancer cells. This study elucidates the role of the ACC-linked antibody/receptor complex in cytotoxicity and supports the potential of ACE1831 as an off-the-shelf γδ2 cell therapy against relapsed/refractory B-cell lymphoma.
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Affiliation(s)
- Hao-Kang Li
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Tai-Sheng Wu
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Yi-Chiu Kuo
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Ching-Wen Hsiao
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Hsiu-Ping Yang
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Chia-Yun Lee
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Pei-Ju Leng
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Yun-Jung Chiang
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Zih-Fei Cheng
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Sen-Han Yang
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Yan-Liang Lin
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Li-Yu Chen
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (L.-Y.C.); (C.-S.C.); (Y.-J.C.)
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Ciao-Syuan Chen
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (L.-Y.C.); (C.-S.C.); (Y.-J.C.)
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei 11529, Taiwan; (L.-Y.C.); (C.-S.C.); (Y.-J.C.)
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Shih-Chia Hsiao
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
| | - Sai-Wen Tang
- Acepodia Biotech Inc., Alameda, CA 94502, USA; (H.-K.L.); (T.-S.W.); (Y.-C.K.); (C.-W.H.); (H.-P.Y.); (C.-Y.L.); (P.-J.L.); (Y.-J.C.); (Z.-F.C.); (S.-H.Y.); (Y.-L.L.)
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4
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Salim A, Werther P, Hatzopoulos GN, Reymond L, Wombacher R, Gönczy P, Johnsson K. Chemical Probe for Imaging of Polo-like Kinase 4 and Centrioles. JACS Au 2023; 3:2247-2256. [PMID: 37654580 PMCID: PMC10466336 DOI: 10.1021/jacsau.3c00271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 09/02/2023]
Abstract
Polo-like kinase (Plk4) is a serine/threonine-protein kinase that is essential for biogenesis of the centriole organelle and is enriched at centrioles. Herein, we introduce Cen-TCO, a chemical probe based on the Plk4 inhibitor centrinone, to image Plk4 and centrioles in live or fixed cultured human cells. Specifically, we established a bio-orthogonal two-step labeling system that enables the Cen-TCO-mediated imaging of Plk4 by STED super-resolution microscopy. Such direct labeling of Plk4 results in an increased resolution in STED imaging compared with using anti-Plk4 antibodies, underlining the importance of direct labeling strategies for super-resolution microscopy. We anticipate that Cen-TCO will become an important tool for investigating the biology of Plk4 and of centrioles.
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Affiliation(s)
- Aleksandar Salim
- Department
of Chemical Biology, Max Planck Institute
for Medical Research, Jahnstrasse 29, Heidelberg 69120, Germany
- Institute
of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Philipp Werther
- Institute
of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, Heidelberg 69120, Germany
| | - Georgios N. Hatzopoulos
- Swiss
Institute for Experimental Cancer Research (ISREC), School of Life
Sciences, Swiss Federal Institute of Technology
Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Luc Reymond
- Institute
of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Richard Wombacher
- Department
of Chemical Biology, Max Planck Institute
for Medical Research, Jahnstrasse 29, Heidelberg 69120, Germany
- Institute
of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, Heidelberg 69120, Germany
| | - Pierre Gönczy
- Swiss
Institute for Experimental Cancer Research (ISREC), School of Life
Sciences, Swiss Federal Institute of Technology
Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Kai Johnsson
- Department
of Chemical Biology, Max Planck Institute
for Medical Research, Jahnstrasse 29, Heidelberg 69120, Germany
- Institute
of Chemical Sciences and Engineering (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
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5
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Timmers M, Kipper A, Frey R, Notermans S, Voievudskyi M, Wilson C, Hentzen N, Ringle M, Bovino C, Stump B, Rijcken CJF, Vermonden T, Dijkgraaf I, Liskamp R. Exploring the Chemical Properties and Medicinal Applications of Tetramethylthiocycloheptyne Sulfoximine Used in Strain-Promoted Azide-Alkyne Cycloaddition Reactions. Pharmaceuticals (Basel) 2023; 16:1155. [PMID: 37631074 PMCID: PMC10459143 DOI: 10.3390/ph16081155] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
The recently developed compound, tetramethylthiocycloheptyne sulfoximine (TMTHSI), has shown to be a promising strained alkyne for strain-promoted azide-alkyne cycloaddition (SPAAC), metal-free click chemistry. This research explores the properties of TMTHSI-based compounds via three aspects: (1) large-scale production, (2) unique stability in acidic conditions and its subsequent use in peptide synthesis, and (3) the functionalization of antibodies. Here, it is shown that (1) scale-up is achieved on a scale of up to 100 g. (2) TMTHSI is remarkably stable against TFA allowing for the site-specific functionalization of peptides on resin. Finally, (3) the functionalization of an antibody with a model payload is very efficient, with antibody conjugation demonstrating more beneficial features such as a high yield and limited hydrophobicity as compared to other alkyne reagent conjugates. These results illustrate the high potential of TMTHSI for diverse bioconjugation applications, with production already being GMP-compatible and a highly efficient conversion resulting in attractive costs of goods.
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Affiliation(s)
- Matt Timmers
- Cristal Therapeutics, 6229 EV Maastricht, The Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutic Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | | | - Raphael Frey
- Lonza AG, Bioconjugates Development, Rottenstr., 3930 Visp, Switzerland (N.H.); (M.R.); (B.S.)
| | - Stef Notermans
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
| | | | - Claire Wilson
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK
| | - Nina Hentzen
- Lonza AG, Bioconjugates Development, Rottenstr., 3930 Visp, Switzerland (N.H.); (M.R.); (B.S.)
| | - Michael Ringle
- Lonza AG, Bioconjugates Development, Rottenstr., 3930 Visp, Switzerland (N.H.); (M.R.); (B.S.)
| | - Clara Bovino
- Lonza AG, Bioconjugates Development, Rottenstr., 3930 Visp, Switzerland (N.H.); (M.R.); (B.S.)
| | - Bernhard Stump
- Lonza AG, Bioconjugates Development, Rottenstr., 3930 Visp, Switzerland (N.H.); (M.R.); (B.S.)
| | | | - Tina Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutic Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Ingrid Dijkgraaf
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Rob Liskamp
- Cristal Therapeutics, 6229 EV Maastricht, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK
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6
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Stuyver T, Coley C. Machine Learning-Guided Computational Screening of New Candidate Reactions with High Bioorthogonal Click Potential. Chemistry 2023; 29:e202300387. [PMID: 36787246 DOI: 10.1002/chem.202300387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 02/15/2023]
Abstract
Bioorthogonal click chemistry has become an indispensable part of the biochemist's toolbox. Despite the wide variety of applications that have been developed in recent years, only a limited number of bioorthogonal click reactions have been discovered so far, most of them based on (substituted) azides. In this work, we present a computational workflow to discover new candidate reactions with promising kinetic and thermodynamic properties for bioorthogonal click applications. Sampling only around 0.05% of an overall search space of over 10,000,000 dipolar cycloadditions, we develop a machine learning model able to predict DFT-computed activation and reaction energies within ~2-3 kcal/mol across the entire space. Applying this model to screen the full search space through iterative rounds of learning, we identify a broad pool of candidate reactions with rich structural diversity, which can be used as a starting point or source of inspiration for future experimental development of both azide-based and non-azide-based bioorthogonal click reactions.
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Affiliation(s)
- Thijs Stuyver
- Massachusetts Institute of Technology, Chemical Engineering, 77 Massachusetts Avenue, 02139, Boston, UNITED STATES
| | - Connor Coley
- Massachusetts Institute of Technology, Chemical Engineering, UNITED STATES
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7
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Wu J, Hu Y, Ye H, Zhang S, Zhu J, Ji D, Zhang Y, Ding Y, Huang Z. One Stone Two Birds: Redox-Sensitive Colocalized Delivery of Cisplatin and Nitric Oxide through Cascade Reactions. JACS Au 2022; 2:2339-2351. [PMID: 36311834 PMCID: PMC9597859 DOI: 10.1021/jacsau.2c00390] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Bio-orthogonal bond-cleavage reactions have been used in cancer therapy for improving the biological specificity of prodrug activation, but the spatiotemporal consistency of reactants is still a huge challenge. Although, in most cases, the cleavage catalysts and caged prodrugs are administrated separately, it is difficult to avoid the reactions in advance before they meet at the tumor site. Herein, we design and construct novel coordinative nanoparticles, integrating two prodrugs A and B as ligands and ferric ions as coordinative centers. After nanoparticles accumulated in tumor through passive targeting, inert Pt(IV) prodrug A is specifically and spontaneously reduced into active Pt(II) cisplatin, which acts as the cleavage catalyst to subsequently initiate the in situ bio-orthogonal depropargylation of B, that is, O 2-propargyl nitric oxide (NO) donor. The unique structure of coordinative nanoparticles ensures the spatiotemporal consistency of reactants (prodrugs A and B) and products (cytotoxic cisplatin and tumoricidal NO) for the bio-orthogonal bond-cleavage reaction, which leads to an improved synergistic therapeutic activity for triple-negative breast cancer (TNBC). This new concept of bio-orthogonal dual-prodrug coordinative nanoparticles may inspire further applications in bio-orthogonal chemistry and drug delivery for combination chemotherapy.
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Affiliation(s)
- Jianbing Wu
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
| | - Yihui Hu
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, China Pharmaceutical University, Nanjing210009, P. R. China
- Institute
for Regenerative Medicine, Shanghai East Hospital, The Institute for
Biomedical Engineering & Nano Science, School of Medicine, Tongji University, Shanghai200092, P. R.
China
| | - Hui Ye
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
| | - Sheng Zhang
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, China Pharmaceutical University, Nanjing210009, P. R. China
| | - Jie Zhu
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
| | - Duorui Ji
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
| | - Yihua Zhang
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
| | - Ya Ding
- Key
Laboratory of Drug Quality Control and Pharmacovigilance, Ministry
of Education, China Pharmaceutical University, Nanjing210009, P. R. China
| | - Zhangjian Huang
- State
Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug
Discovery for Metabolic Diseases, China
Pharmaceutical University, Nanjing210009, P. R. China
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8
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Gao Z, Zhang E, Zhao H, Xia S, Bai H, Huang Y, Lv F, Liu L, Wang S. Bacteria-Mediated Intracellular Click Reaction for Drug Enrichment and Selective Apoptosis of Drug-Resistant Tumor Cells. ACS Appl Mater Interfaces 2022; 14:12106-12115. [PMID: 35257582 DOI: 10.1021/acsami.2c01493] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Functionalized biocarriers that can perform bio-orthogonal reactions in tumor cells may provide solutions to overcome the efflux of the chemotherapeutic agent from drug-resistant tumor cells. Herein, we report the enrichment of therapeutic drugs in tumor cells through intracellular click reaction with functionalized bacteria. Specifically, an intracellular bioactive drug enrichment template (OPV@Escherichia coli) is constructed by combining positively charged oligo(phenylene-vinylene)-alkyne (OPV-C≡CH) with E. coli via electrostatic interaction. After the cell uptake of OPV@E. coli and Cu(II)-based complex, Cu(I) generated in situ can catalyze the bio-orthogonal click reaction to covalently anchor the azide-bearing molecules of cyanine 5 (Cy5-N3) and paclitaxel (PTX-N3) on OPV@E. coli. These molecules and their functions were retained and enriched inside the drug-resistant tumor cells A549T, which can label cells with fluorescent probes and selectively induce the apoptosis of drug-resistant tumor cells.
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Affiliation(s)
- Zhiqiang Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- College of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Endong Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hao Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shengpeng Xia
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- College of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Haotian Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yiming Huang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- College of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- College of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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9
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Carrillo-Carrión C, Martínez R, Polo E, Tomás-Gamasa M, Destito P, Ceballos M, Pelaz B, López F, Mascareñas JL, Pino PD. Plasmonic-Assisted Thermocyclizations in Living Cells Using Metal-Organic Framework Based Nanoreactors. ACS Nano 2021; 15:16924-16933. [PMID: 34658232 PMCID: PMC8552491 DOI: 10.1021/acsnano.1c07983] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We describe a microporous plasmonic nanoreactor to carry out designed near-infrared (NIR)-driven photothermal cyclizations inside living cells. As a proof of concept, we chose an intramolecular cyclization that is based on the nucleophilic attack of a pyridine onto an electrophilic carbon, a process that requires high activation energies and is typically achieved in bulk solution by heating at ∼90 °C. The core-shell nanoreactor (NR) has been designed to include a gold nanostar core, which is embedded within a metal-organic framework (MOF) based on a polymer-stabilized zeolitic imidazole framework-8 (ZIF-8). Once accumulated inside living cells, the MOF-based cloak of NRs allows an efficient diffusion of reactants into the plasmonic chamber, where they undergo the transformation upon near-IR illumination. The photothermal-driven reaction enables the intracellular generation of cyclic fluorescent products that can be tracked using fluorescence microscopy. The strategy may find different type of applications, such as for the spatio-temporal activation of prodrugs.
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Affiliation(s)
- Carolina Carrillo-Carrión
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Física de
Partículas, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Raquel Martínez
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Física de
Partículas, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Ester Polo
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Bioquímica
y Biología Molecular, Universidade
de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - María Tomás-Gamasa
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Paolo Destito
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Manuel Ceballos
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Física de
Partículas, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Beatriz Pelaz
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Inorgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Fernando López
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
- Misión
Biológica de Galicia, Consejo Superior
de Investigaciones Científicas (CSIC), 36080 Pontevedra, Spain
| | - José L. Mascareñas
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Pablo del Pino
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS), Departamento de Física de
Partículas, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
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10
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He M, Wu X, Mao S, Haruehanroengra P, Khan I, Sheng J, Royzen M. Non-Chromatographic Purification of Synthetic RNA Using Bio-Orthogonal Chemistry. Curr Protoc 2021; 1:e247. [PMID: 34570433 DOI: 10.1002/cpz1.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Solid-phase synthesis of RNA oligonucleotides over 100 nt in length remains challenging due to the complexity of purification of the target strands from the failure sequences. This article describes a non-chromatographic procedure that will enable routine solid-phase synthesis and purification of long RNA strands. The optimized five-step process is based on bio-orthogonal inverse electron demand Diels-Alder chemistry between trans-cyclooctene (TCO) and tetrazine (Tz), and entails solid-phase synthesis of RNA on a photo-labile support. The target oligonucleotide strands are selectively tagged with Tz while on-support. After photocleavage from the solid support, the target oligonucleotide strands can be captured and purified from the failure sequences using immobilized TCO. The approach can be applied for purification of 76-nt long tRNA and 101-nt long sgRNA for CRISPR experiments. Purity of the isolated oligonucleotides should be evaluated using gel electrophoresis, while functional fidelity of the sgRNA should be confirmed using CRISPR-Cas9 experiments. © 2021 Wiley Periodicals LLC. Basic Protocol: Five-step non-chromatographic purification of synthetic RNA oligonucleotides Support Protocol 1: Synthesis of the components that are required for the non-chromatographic purification of long RNA oligonucleotides. Support Protocol 2: Solid-phase RNA synthesis.
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Affiliation(s)
- Muhan He
- Department of Chemistry, University at Albany, SUNY, Albany, New York
| | - Xunshen Wu
- Department of Chemistry, University at Albany, SUNY, Albany, New York
| | - Song Mao
- Department of Chemistry, University at Albany, SUNY, Albany, New York
| | | | - Irfan Khan
- Department of Chemistry, University at Albany, SUNY, Albany, New York
| | - Jia Sheng
- Department of Chemistry, University at Albany, SUNY, Albany, New York
| | - Maksim Royzen
- Department of Chemistry, University at Albany, SUNY, Albany, New York
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11
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Zhang L, Yao K, Wang Y, Zhou YL, Fu Z, Li G, Ling J, Yang Y. Brain-Targeted Dual Site-Selective Functionalized Poly(β-Amino Esters) Delivery Platform for Nerve Regeneration. Nano Lett 2021; 21:3007-3015. [PMID: 33797927 DOI: 10.1021/acs.nanolett.1c00175] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Brain injuries are devastating central nervous system diseases, resulting in cognitive, motor, and sensory dysfunctions. However, clinical therapeutic options are still limited for brain injuries, indicating an urgent need to investigate new therapies. Furthermore, the efficient delivery of therapeutics across the blood-brain barrier (BBB) to the brain is a serious problem. In this study, a facile strategy of dual site-selective functionalized (DSSF) poly(β-amino esters) was developed using bio-orthogonal chemistry for promoting brain nerve regeneration. Fluorescence colocalization studies demonstrated that these proton-sponge DSSF poly(β-amino esters) targeted mitochondria through electrostatic interactions. More importantly, this delivery system could effectively accumulate in the injured brain sites and accelerate the recovery of the injured brain. Finally, this DSSF poly(β-amino esters) platform may provide a new methodology for the construction of dual regioselective carriers in protein/peptide delivery and tissue engineering.
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Affiliation(s)
- Luzhong Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Ke Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Yuqing Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - You Lang Zhou
- Hand Surgery Research Center, Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Zexi Fu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Guicai Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Jue Ling
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
| | - Yumin Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, 226001 Nantong, Jiangsu, PR China
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12
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van der Zouwen AJ, Jeucken A, Steneker R, Hohmann KF, Lohse J, Slotboom DJ, Witte MD. Iminoboronates as Dual-Purpose Linkers in Chemical Probe Development. Chemistry 2021; 27:3292-3296. [PMID: 33259638 PMCID: PMC7898632 DOI: 10.1002/chem.202005115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Indexed: 11/25/2022]
Abstract
Chemical probes that covalently modify proteins of interest are powerful tools for the research of biological processes. Important in the design of a probe is the choice of reactive group that forms the covalent bond, as it decides the success of a probe. However, choosing the right reactive group is not a simple feat and methodologies for expedient screening of different groups are needed. We herein report a modular approach that allows easy coupling of a reactive group to a ligand. α-Nucleophile ligands are combined with 2-formylphenylboronic acid derived reactive groups to form iminoboronate probes that selectively label their target proteins. A transimination reaction on the labeled proteins with an α-amino hydrazide provides further modification, for example to introduce a fluorophore.
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Affiliation(s)
| | - Aike Jeucken
- Membrane EnzymologyGroningen Biomolecular Sciences and Biotechnology Institute9747AGGroningenThe Netherlands
| | - Roy Steneker
- Chemical Biology IIStratingh Institute for ChemistryNijenborgh 79747 AGGroningenThe Netherlands
| | - Katharina F. Hohmann
- Chemical Biology IIStratingh Institute for ChemistryNijenborgh 79747 AGGroningenThe Netherlands
| | - Jonas Lohse
- Chemical Biology IIStratingh Institute for ChemistryNijenborgh 79747 AGGroningenThe Netherlands
| | - Dirk J. Slotboom
- Membrane EnzymologyGroningen Biomolecular Sciences and Biotechnology Institute9747AGGroningenThe Netherlands
| | - Martin D. Witte
- Chemical Biology IIStratingh Institute for ChemistryNijenborgh 79747 AGGroningenThe Netherlands
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13
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Hoelzel CA, Zhang X. Visualizing and Manipulating Biological Processes by Using HaloTag and SNAP-Tag Technologies. Chembiochem 2020; 21:1935-1946. [PMID: 32180315 PMCID: PMC7367766 DOI: 10.1002/cbic.202000037] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/27/2020] [Indexed: 12/25/2022]
Abstract
Visualizing and manipulating the behavior of proteins is crucial to understanding the physiology of the cell. Methods of biorthogonal protein labeling are important tools to attain this goal. In this review, we discuss advances in probe technology specific for self-labeling protein tags, focusing mainly on the application of HaloTag and SNAP-tag systems. We describe the latest developments in small-molecule probes that enable fluorogenic (no wash) imaging and super-resolution fluorescence microscopy. In addition, we cover several methodologies that enable the perturbation or manipulation of protein behavior and function towards the control of biological pathways. Thus, current technical advances in the HaloTag and SNAP-tag systems means that they are becoming powerful tools to enable the visualization and manipulation of biological processes, providing invaluable scientific insights that are difficult to obtain by traditional methodologies. As the multiplex of self-labeling protein tag systems continues to be developed and expanded, the utility of these protein tags will allow researchers to address previously inaccessible questions at the forefront of biology.
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Affiliation(s)
- Conner A Hoelzel
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, PA 16802, USA
| | - Xin Zhang
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, PA 16802, USA
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14
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de Vries RH, Viel JH, Oudshoorn R, Kuipers OP, Roelfes G. Selective Modification of Ribosomally Synthesized and Post-Translationally Modified Peptides (RiPPs) through Diels-Alder Cycloadditions on Dehydroalanine Residues. Chemistry 2019; 25:12698-12702. [PMID: 31361053 PMCID: PMC6790694 DOI: 10.1002/chem.201902907] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/29/2019] [Indexed: 11/08/2022]
Abstract
We report the late‐stage chemical modification of ribosomally synthesized and post‐translationally modified peptides (RIPPs) by Diels–Alder cycloadditions to naturally occurring dehydroalanines. The tail region of the thiopeptide thiostrepton could be modified selectively and efficiently under microwave heating and transition‐metal‐free conditions. The Diels–Alder adducts were isolated and the different site‐ and endo/exo isomers were identified by 1D/2D 1H NMR. Via efficient modification of the thiopeptide nosiheptide and the lanthipeptide nisin Z the generality of the method was established. Minimum inhibitory concentration (MIC) assays of the purified thiostrepton Diels–Alder products against thiostrepton‐susceptible strains displayed high activities comparable to that of native thiostrepton. These Diels–Alder products were also subjected successfully to inverse‐electron‐demand Diels–Alder reactions with a variety of functionalized tetrazines, demonstrating the utility of this method for labeling of RiPPs.
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Affiliation(s)
- Reinder H de Vries
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Jakob H Viel
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747, AG, Groningen, The Netherlands
| | - Ruben Oudshoorn
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Oscar P Kuipers
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 7, 9747, AG, Groningen, The Netherlands
| | - Gerard Roelfes
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
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15
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Lee HJ, Fernandes‐Cunha GM, Na K, Hull SM, Myung D. Bio-Orthogonally Crosslinked, In Situ Forming Corneal Stromal Tissue Substitute. Adv Healthc Mater 2018; 7:e1800560. [PMID: 30106514 DOI: 10.1002/adhm.201800560] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/18/2018] [Indexed: 12/13/2022]
Abstract
In this study, an in situ forming corneal stromal substitute based on collagen type I crosslinked by bio-orthogonal strain-promoted azide-alkyne cycloaddition (SPAAC) is presented. The crosslinked collagen gel has greater transparency compared to non-crosslinked collagen gels. The mechanical properties of the gels are controlled by changing functional group ratios and conjugated collagen concentrations. Higher concentrations of conjugated collagen yield enhances mechanical properties, where the storage modulus increases from 42.39 ± 8.95 to 112.03 ± 3.94 Pa after SPAAC crosslinking. Encapsulated corneal keratocytes grow within the SPAAC-crosslinked gels and corneal keratinocytes are supported on top of the gel surfaces. SPAAC-crosslinked gels support more favorable and stable keratinocyte morphology on their surface compared to non-crosslinked gels likely as a result of more optimal substrate stiffness, gel integrity, and resistance to degradation. SPAAC-crosslinked collagen gels with and without encapsulated keratocytes applied to rabbit corneas in an organ culture model after keratectomy exhibit surface epithelialization with multilayered morphology. The novel in situ forming gel is a promising candidate for lamellar and defect reconstruction of corneal stromal tissue.
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Affiliation(s)
- Hyun Jong Lee
- Byers Eye Institute at Stanford University School of Medicine Palo Alto CA 94303 USA
| | | | - Kyung‐Sun Na
- Byers Eye Institute at Stanford University School of Medicine Palo Alto CA 94303 USA
- Department of Ophthalmology and Visual Science Yeouido St. Mary's Hospital College of Medicine The Catholic University of Korea Seoul 07345 South Korea
| | - Sarah M. Hull
- Department of Chemical Engineering Stanford University Stanford CA 94305 USA
| | - David Myung
- Byers Eye Institute at Stanford University School of Medicine Palo Alto CA 94303 USA
- VA Palo Alto Health Care System Palo Alto CA 94304 USA
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16
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Abstract
Hydrogels are commonly used as engineered extracellular matrix (ECM) mimics in applications ranging from tissue engineering to in vitro disease models. Ideal mechanisms used to crosslink ECM-mimicking hydrogels do not interfere with the biology of the system. However, most common hydrogel crosslinking chemistries exhibit some form of cross-reactivity. The field of bio-orthogonal chemistry has arisen to address the need for highly specific and robust reactions in biological contexts. Accordingly, bio-orthogonal crosslinking strategies have been incorporated into hydrogel design, allowing for gentle and efficient encapsulation of cells in various hydrogel materials. Furthermore, the selective nature of bio-orthogonal chemistries can permit dynamic modification of hydrogel materials in the presence of live cells and other biomolecules to alter matrix mechanical properties and biochemistry on demand. In this review, we provide an overview of bio-orthogonal strategies used to prepare cell-encapsulating hydrogels and highlight the potential applications of bio-orthogonal chemistries in the design of dynamic engineered ECMs.
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Affiliation(s)
- Christopher M Madl
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Sarah C Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA,
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17
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Alge DL, Donohue DF, Anseth KS. Facile and efficient Lewis acid catalyzed synthesis of an asymmetric tetrazine useful for bio-orthogonal click chemistry applications. Tetrahedron Lett 2013; 54. [PMID: 24270730 PMCID: PMC3834559 DOI: 10.1016/j.tetlet.2013.08.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Bio-orthogonal tetrazine click reactions have recently attracted significant interest for applications spanning biological imaging, cancer targeting, and biomaterials science. Here, we report a simple and efficient two-step scheme for the synthesis of an asymmetric tetrazine molecule containing a carboxylic acid handle for subsequent macromolecular conjugation. Yields as high as 75% were achieved using as little as 0.005 equivalents of nickel triflate catalyst, which is a significant improvement over previous methodologies.
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Affiliation(s)
- Daniel L Alge
- Unversity of Colorado at Boulder, Department of Chemical and Biological Engineering and the BioFrontiers Institute, Boulder, CO 80303, USA ; Howard Hughes Medical Institute, Boulder, CO 80303, USA
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