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Harnessing the Bioorthogonal Inverse Electron Demand Diels-Alder Cycloaddition for Pretargeted PET Imaging
Published on: February 3, 2015
Novel prodrugs for targeting diagnostic and therapeutic radionuclides to solid tumors
Amin I Kassis1, Houari Korideck, Ketai Wang
1Department of Radiology, Harvard Medical School, Armenise Building, Room D2-137, 200 Longwood Avenue, Boston, Massachusetts 02115, USA. amin_kassis@hms.harvard.edu
Abstract:
Most cancer therapeutics (chemo, radiation, antibody-based, anti-angiogenic) are at best partially and/or temporarily effective. In general, the causes for failure can be summarized as: (i) poor diffusion and/or nonuniform distribution of drug/prodrug molecules in solid tumors; (ii) high drug concentration and retention in normal tissues (leading to side effects); (iii) requirement for plasma-membrane permeability and/or internalization of drug/prodrug molecules; (iv) low uptake of drug by tumor; (v) lack of retention of drug within tumor (most have gradient-driven reversible binding); and (vi) multidrug resistance. We are developing an innovative technology that aims to surmount these problems by actively concentrating and permanently entrapping radioimaging and radiotherapeutic prodrugs specifically within solid tumors. The approach will enable noninvasive sensing (imaging) and effective therapy of solid tumors, allowing tumor detection, diagnosis, and treatment to be closely coupled (personalized medicine).
Insights
This study introduces a novel technology to overcome cancer therapy limitations by concentrating and trapping radiopharmaceuticals within solid tumors. This approach enhances tumor imaging and treatment efficacy for personalized medicine.
Area of Science:
- Oncology
- Radiopharmaceutical Chemistry
- Drug Delivery Systems
Background:
- Conventional cancer therapeutics exhibit limited efficacy due to issues like poor drug distribution, toxicity in normal tissues, and multidrug resistance.
- Existing treatments often fail to achieve sufficient drug concentration or retention within solid tumors.
- Challenges include drug diffusion, non-uniform distribution, normal tissue toxicity, cell permeability requirements, low tumor uptake, and lack of drug retention.
Purpose of the Study:
- To develop an innovative technology for actively concentrating and permanently entrapping radiopharmaceuticals specifically within solid tumors.
- To address the limitations of current cancer therapeutics, including poor drug distribution and retention.
- To enable noninvasive sensing and effective therapy of solid tumors for personalized medicine.
Main Methods:
- Development of a novel technology for active concentration and permanent entrapment of prodrugs.
- Utilizing radioimaging and radiotherapeutic prodrugs for targeted delivery.
- Focusing on overcoming challenges in drug diffusion, retention, and tumor uptake.
Main Results:
- The technology aims to actively concentrate and permanently entrap prodrugs within solid tumors.
- This approach is designed to overcome common failure points in cancer therapy.
- Potential for enhanced tumor detection, diagnosis, and treatment through coupled noninvasive sensing and therapy.
Conclusions:
- The innovative technology offers a promising strategy to surmount existing challenges in cancer therapy.
- Active concentration and permanent entrapment of radiopharmaceuticals in tumors can improve treatment outcomes.
- This approach facilitates personalized medicine by closely coupling tumor detection, diagnosis, and treatment.
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