Andreas Löffler

ORCID: 0000-0001-6910-6813
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About
Contact & Profiles
Research Areas
  • Click Chemistry and Applications
  • Monoclonal and Polyclonal Antibodies Research
  • Chemical Synthesis and Analysis
  • HER2/EGFR in Cancer Research
  • Radiopharmaceutical Chemistry and Applications
  • Synthesis and Biological Evaluation

TU Wien
2021-2025

Bioorthogonal bond-cleavage reactions are powerful tools for investigating biological dynamics and advancing therapeutic strategies. Primed by click reactivity, the multi-step cascades that lead to bioorthogonal release have nevertheless been challenging navigate. For widely recognized tetrazine-triggered cleavage of trans-cyclooctenes (TCO), complexities post-click tautomerization key barrier achieving next-level molecular tools. Strategies anchor directing functionalities tetrazines (Tz)...

10.26434/chemrxiv-2025-7s39f preprint EN cc-by 2025-03-13

Tetrazines (Tz) have been applied as bioorthogonal agents for various biomedical applications, including pretargeted imaging approaches. In radioimmunoimaging, pretargeting increases the target-to-background ratio while simultaneously reducing radiation burden. We recently reported a strategy to directly 18F-label highly reactive tetrazines based on 3-(3-fluorophenyl)-Tz core structure. Herein, we report kinetic study this versatile scaffold. A library of 40 different was prepared, fully...

10.1021/acs.bioconjchem.2c00042 article EN cc-by-nc-nd Bioconjugate Chemistry 2022-03-15

Bioorthogonal bond-cleavage reactions have emerged as a powerful tool for precise spatiotemporal control of (bio)molecular function in the biological context. Among these chemistries, tetrazine-triggered elimination cleavable trans-cyclooctenes (click-to-release) stands out due to high reaction rates, versatility, and selectivity. Despite an increasing understanding underlying mechanisms, application this remains limited by cumulative performance trade-offs (i.e., click kinetics, release...

10.26434/chemrxiv-2024-gh8fz-v3 preprint EN 2024-07-02

Bioorthogonal bond‐cleavage reactions have emerged as a powerful tool for precise spatiotemporal control of (bio)molecular function in the biological context. Among these chemistries, tetrazine‐triggered elimination cleavable trans‐cyclooctenes (click‐to‐release) stands out due to high reaction rates, versatility, and selectivity. Despite an increasing understanding underlying mechanisms, application this remains limited by cumulative performance trade‐offs (i.e., click kinetics, release...

10.1002/anie.202411707 article EN cc-by Angewandte Chemie International Edition 2024-09-10

Bioorthogonal bond-cleavage reactions have emerged as a powerful tool for precise spatiotemporal control of (bio)molecular function in the biological context. Among these chemistries, tetrazine-triggered elimination cleavable trans-cyclooctenes (click-to-release) stands out due to high reaction rates, versatility, and selectivity. Despite an increasing understanding underlying mechanisms, application this remains limited by cumulative performance trade-offs (i.e., click kinetics, release...

10.26434/chemrxiv-2024-gh8fz preprint EN cc-by 2024-05-07

Bioorthogonal bond-cleavage reactions have emerged as a powerful tool for precise spatiotemporal control of (bio)molecular function in the biological context. Among these chemistries, tetrazine-triggered elimination cleavable trans-cyclooctenes (click-to-release) stands out due to high reaction rates, versatility, and selectivity. Despite an increasing understanding underlying mechanisms, application this remains limited by cumulative performance trade-offs (i.e., click kinetics, release...

10.26434/chemrxiv-2024-gh8fz-v2 preprint EN cc-by 2024-05-13

Bioorthogonal bond‐cleavage reactions have emerged as a powerful tool for precise spatiotemporal control of (bio)molecular function in the biological context. Among these chemistries, tetrazine‐triggered elimination cleavable trans‐cyclooctenes (click‐to‐release) stands out due to high reaction rates, versatility, and selectivity. Despite an increasing understanding underlying mechanisms, application this remains limited by cumulative performance trade‐offs (i.e., click kinetics, release...

10.1002/ange.202411707 article EN cc-by Angewandte Chemie 2024-09-10

Tetrazines (Tz) have been applied as bioorthogonal agents for various biomedical applications including pretargeted imaging approaches. In radioimmunoimaging, pretargeting increases the target-to-background ratio while simultaneously reducing radiation burden. We recently reported a strategy to directly 18F-label highly reactive tetrazines based on 3-(3-fluorophenyl)-Tz core structure. Herein, we report kinetic study this versatile scaffold. A library of 40 different was prepared, fully...

10.26434/chemrxiv-2021-2kn3l preprint EN cc-by-nc-nd 2021-10-26

Pretargeted bioorthogonal imaging can be used to visualize and quantify slow accumulating targeting vectors with short-lived radionuclides such as fluorine-18 - the most clinically applied Positron Emission Tomography (PET) radionuclide. Pretargeting results in higher target-to-background ratios compared conventional approaches using long-lived radionuclides. Currently, tetrazine ligation is popular reaction for pretargeted imaging, but a direct18 F-labeling strategy highly reactive...

10.26434/chemrxiv.14068712.v1 preprint EN cc-by-nc-nd 2021-02-22

Tetrazines (Tz) have been applied as bioorthogonal agents for various biomedical applications including pretargeted imaging approaches. In radioimmunoimaging, pretargeting increases the target-to-background ratio while simultaneously reducing radiation burden. We recently reported a strategy to directly 18F-label highly reactive tetrazines based on 3-(3-fluorophenyl)-Tz core structure. Herein, we report kinetic study this versatile scaffold. A library of 40 different was prepared, fully...

10.33774/chemrxiv-2021-2kn3l preprint EN cc-by-nc-nd 2021-10-26
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