Site-specific antibody-liposome conjugation through copper-free click chemistry: a molecular biology approach for targeted photodynamic therapy (Conference Presentation)

2016 ◽  
Author(s):  
Girgis Obaid ◽  
Yucheng Wang ◽  
Jerrin Kuriakose ◽  
Mans Broekgaarden ◽  
Ahmed Alkhateeb ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Molecular Biology ◽  
Click Chemistry ◽  
Specific Antibody ◽  
Site Specific ◽  
Targeted Photodynamic Therapy

A novel distyryl boron dipyrromethene with two functional tags for site-specific bioorthogonal photosensitisation towards targeted photodynamic therapy

2019 ◽  
Vol 55 (90) ◽  
pp. 13518-13521 ◽  
Author(s):  
Xuejiao Guo ◽  
Roy C. H. Wong ◽  
Yimin Zhou ◽  
Dennis K. P. Ng ◽  
Pui-Chi Lo
Keyword(s):  
Photodynamic Therapy ◽  
Targeted Delivery ◽  
Site Specific ◽  
Boron Dipyrromethene ◽  
Targeted Photodynamic Therapy

A sequential “tag-and-click” process for targeted delivery of photosensitisers for photodynamic therapy.

Scavenger-Receptor Targeted Photodynamic Therapy¶

2000 ◽  
Vol 72 (4) ◽  
pp. 533 ◽  
Author(s):  
Michael R. Hamblin ◽  
Jaimie L. Miller ◽  
Bernhard Ortel
Keyword(s):  
Photodynamic Therapy ◽  
Scavenger Receptor ◽  
Targeted Photodynamic Therapy

scholarly journals Nanoscale Metal–Organic Layer Isolates Phthalocyanines for Efficient Mitochondria-Targeted Photodynamic Therapy

2021 ◽  
Vol 143 (5) ◽  
pp. 2194-2199 ◽  
Author(s):  
Geoffrey T. Nash ◽  
Taokun Luo ◽  
Guangxu Lan ◽  
Kaiyuan Ni ◽  
Michael Kaufmann ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Organic Layer ◽  
Metal Organic ◽  
Targeted Photodynamic Therapy

scholarly journals Site-Specific Dual-Labeling of a VHH with a Chelator and a Photosensitizer for Nuclear Imaging and Targeted Photodynamic Therapy of EGFR-Positive Tumors

Cancers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 428
Author(s):  
Emma Renard ◽  
Estel Collado Camps ◽  
Coline Canovas ◽  
Annemarie Kip ◽  
Martin Gotthardt ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Fluorescence Imaging ◽  
Ex Vivo ◽  
Growth Factor Receptor ◽  
Nuclear Imaging ◽  
A431 Cells ◽  
Site Specific ◽  
Variable Domains ◽  
Diagnostic Probe

Variable domains of heavy chain only antibodies (VHHs) are valuable agents for application in tumor theranostics upon conjugation to both a diagnostic probe and a therapeutic compound. Here, we optimized site-specific conjugation of the chelator DTPA and the photosensitizer IRDye700DX to anti-epidermal growth factor receptor (EGFR) VHH 7D12, for applications in nuclear imaging and photodynamic therapy. 7D12 was site-specifically equipped with bimodal probe DTPA-tetrazine-IRDye700DX using the dichlorotetrazine conjugation platform. Binding, internalization and light-induced toxicity of DTPA-IRDye700DX-7D12 were determined using EGFR-overexpressing A431 cells. Finally, ex vivo biodistribution of DTPA-IRDye700DX-7D12 in A431 tumor-bearing mice was performed, and tumor homing was visualized with SPECT and fluorescence imaging. DTPA-IRDye700DX-7D12 was retrieved with a protein recovery of 43%, and a degree of labeling of 0.56. Spectral properties of the IRDye700DX were retained upon conjugation. 111In-labeled DTPA-IRDye700DX-7D12 bound specifically to A431 cells, and they were effectively killed upon illumination. DTPA-IRDye700DX-7D12 homed to A431 xenografts in vivo, and this could be visualized with both SPECT and fluorescence imaging. In conclusion, the dichlorotetrazine platform offers a feasible method for site-specific dual-labeling of VHH 7D12, retaining binding affinity and therapeutic efficacy. The flexibility of the described approach makes it easy to vary the nature of the probes for other combinations of diagnostic and therapeutic compounds.

scholarly journals Alkynyl N-BODIPYs as Reactive Intermediates for the Development of Dyes for Biophotonics

2020 ◽  
Vol 3 (1) ◽  
pp. 15
Author(s):  
César Ray ◽  
Andrés García-Sampedro ◽  
Christopher Schad ◽  
Edurne Avellanal-Zaballa ◽  
Florencio Moreno ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Photodynamic Therapy ◽  
Click Chemistry ◽  
Cancer Cells ◽  
Reactive Intermediates ◽  
New Approach ◽  
Pancreatic Cancer Cells ◽  
Bio Imaging

A new approach for the rapid multi-functionalization of BODIPY dyes towards biophotonics is reported. It is based on novel N-BODIPYs, through reactive intermediates with alkynyl groups to be further derivatized by click chemistry. This approach has been exemplified by the development of new dyes for cell bio-imaging, which have proven to successfully internalize into pancreatic cancer cells and accumulate in the mitochondria. The in vitro suitability for photodynamic therapy (PDT) was also analyzed and confirmed our compounds to be promising PDT candidates for the treatment of pancreatic cancer.

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