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Müller P, Sahlbach M, Gasper S, Mayer G, Müller J, Pötzsch B, Heckel A. Controlling Coagulation in Blood with Red Light. Angew Chem Int Ed Engl 2021; 60:22441-22446. [PMID: 34293228 PMCID: PMC8518524 DOI: 10.1002/anie.202108468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Indexed: 12/15/2022]
Abstract
Precise control of blood clotting and rapid reversal of anticoagulation are essential in many clinical situations. We were successful in modifying a thrombin-binding aptamer with a red-light photocleavable linker derived from Cy7 by Cu-catalyzed Click chemistry. We were able to show that we can successfully deactivate the modified aptamer with red light (660 nm) even in human blood-restoring the blood's natural coagulation capability.
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Affiliation(s)
- Patricia Müller
- Goethe University FrankfurtInstitute for Organic Chemistry and Chemical BiologyMax-von-Laue Str. 960438Frankfurt am MainGermany
| | - Marlen Sahlbach
- Goethe University FrankfurtInstitute for Organic Chemistry and Chemical BiologyMax-von-Laue Str. 960438Frankfurt am MainGermany
| | - Simone Gasper
- University Hospital BonnInstitute of Experimental Hematology and Transfusion MedicineVenusberg-Campus 153105BonnGermany
| | - Günter Mayer
- University of BonnLife and Medical Sciences InstituteCenter of Aptamer Research & DevelopmentGerhard-Domagk-Str. 153121BonnGermany
| | - Jens Müller
- University Hospital BonnInstitute of Experimental Hematology and Transfusion MedicineVenusberg-Campus 153105BonnGermany
| | - Bernd Pötzsch
- University Hospital BonnInstitute of Experimental Hematology and Transfusion MedicineVenusberg-Campus 153105BonnGermany
| | - Alexander Heckel
- Goethe University FrankfurtInstitute for Organic Chemistry and Chemical BiologyMax-von-Laue Str. 960438Frankfurt am MainGermany
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Müller P, Sahlbach M, Gasper S, Mayer G, Müller J, Pötzsch B, Heckel A. Controlling Coagulation in Blood with Red Light. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Patricia Müller
- Goethe University Frankfurt Institute for Organic Chemistry and Chemical Biology Max-von-Laue Str. 9 60438 Frankfurt am Main Germany
| | - Marlen Sahlbach
- Goethe University Frankfurt Institute for Organic Chemistry and Chemical Biology Max-von-Laue Str. 9 60438 Frankfurt am Main Germany
| | - Simone Gasper
- University Hospital Bonn Institute of Experimental Hematology and Transfusion Medicine Venusberg-Campus 1 53105 Bonn Germany
| | - Günter Mayer
- University of Bonn Life and Medical Sciences Institute Center of Aptamer Research & Development Gerhard-Domagk-Str. 1 53121 Bonn Germany
| | - Jens Müller
- University Hospital Bonn Institute of Experimental Hematology and Transfusion Medicine Venusberg-Campus 1 53105 Bonn Germany
| | - Bernd Pötzsch
- University Hospital Bonn Institute of Experimental Hematology and Transfusion Medicine Venusberg-Campus 1 53105 Bonn Germany
| | - Alexander Heckel
- Goethe University Frankfurt Institute for Organic Chemistry and Chemical Biology Max-von-Laue Str. 9 60438 Frankfurt am Main Germany
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Salerno EV, Miller NA, Konar A, Salchner R, Kieninger C, Wurst K, Spears KG, Kräutler B, Sension RJ. Exceptional Photochemical Stability of the Co-C Bond of Alkynyl Cobalamins, Potential Antivitamins B 12 and Core Elements of B 12-Based Biological Vectors. Inorg Chem 2020; 59:6422-6431. [PMID: 32311266 PMCID: PMC7201400 DOI: 10.1021/acs.inorgchem.0c00453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
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Alkynylcorrinoids
are a class of organometallic B12 derivatives,
recently rediscovered for use as antivitamins B12 and as
core components of B12-based biological vectors. They feature
exceptional photochemical and thermal stability of their characteristic
extra-short Co–C bond. We describe here the synthesis and structure
of 3-hydroxypropynylcobalamin (HOPryCbl) and photochemical experiments
with HOPryCbl, as well as of the related alkynylcobalamins: phenylethynylcobalamin
and difluoro-phenylethynylcobalamin. Ultrafast spectroscopic studies
of the excited state dynamics and mechanism for ground state recovery
demonstrate that the Co–C bond of alkynylcobalamins is stable,
with the Co–N bond and ring deformations mediating internal
conversion and ground state recovery within 100 ps. These studies
provide insights required for the rational design of photostable or
photolabile B12-based cellular vectors. Most alkylcobalamins are photolabile; in contrast, alkynylcobalamins
are photostable. Through time-resolved measurements, we demonstrate
for three alkynylcobalamins that the Co−C bond is stable (i.e.
“locked”), while expansion of the Co−N axial
bond (which is “unlocked”) and ring deformations mediate
internal conversion and ground state recovery within 100 ps. The barrier
for ground state recovery is independent of the R group on the alkynyl
ligand.
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Affiliation(s)
- Elvin V Salerno
- Department of Chemistry, University of Michigan, 930 N University Ave. Ann Arbor, Michigan 48109-1055, United States
| | - Nicholas A Miller
- Department of Chemistry, University of Michigan, 930 N University Ave. Ann Arbor, Michigan 48109-1055, United States
| | - Arkaprabha Konar
- Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, Michigan 48109-1040, United States
| | - Robert Salchner
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
| | - Christoph Kieninger
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
| | - Kenneth G Spears
- Department of Chemistry, University of Michigan, 930 N University Ave. Ann Arbor, Michigan 48109-1055, United States
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
| | - Roseanne J Sension
- Department of Chemistry, University of Michigan, 930 N University Ave. Ann Arbor, Michigan 48109-1055, United States.,Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, Michigan 48109-1040, United States.,Biophysics, University of Michigan, 930 N University Ave. Ann Arbor, Michigan 48109-1055, United States
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Joshi BP, Hardie J, Farkas ME. Harnessing Biology to Deliver Therapeutic and Imaging Entities via Cell-Based Methods. Chemistry 2018; 24:8717-8726. [PMID: 29543990 PMCID: PMC6174085 DOI: 10.1002/chem.201706180] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 03/12/2018] [Indexed: 01/21/2023]
Abstract
The accumulation of therapeutic and imaging agents at sites of interest is critical to their efficacy. Similarly, off-target effects (especially toxicity) are a major liability for these entities. For this reason, the use of delivery vehicles to improve the distribution characteristics of bio-active agents has become ubiquitous in the field. However, the majority of traditionally employed, cargo-bearing platforms rely on passive accumulation. Even in cases where "targeting" functionalities are used, the agents must first reach the site in order for the ligand-receptor interaction to occur. The next stage of vehicle development is the use of "recruited" entities, which respond to biological signals produced in the tissues to be targeted, resulting in improved specificities. Recently, many advances have been made in the utilization of cells as delivery agents. They are biocompatible, exhibit excellent circulation lifetimes and tissue penetration capabilities, and respond to chemotactic signals. In this Minireview, we will explore various cell types, modifications, and applications where cell-based delivery agents are used.
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Affiliation(s)
- Bishnu P Joshi
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, MA, 01002, USA
| | - Joseph Hardie
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, MA, 01002, USA
| | - Michelle E Farkas
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, MA, 01002, USA
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