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Published on: September 19, 2014
A multifunctional heptamethine near-infrared dye for cancer theranosis
Shenglin Luo1, Xu Tan, Qingrong Qi
1Institute of Combined Injury, State Key Laboratory of Trauma, Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University, Chongqing 400038, China.
Abstract:
Personalized oncology significantly relies on the development of cancer theranostic agents to integrate cancer therapeutics and diagnostics. Current most common strategy for development of such multifunctional agents requires multistep chemical conjugation with cancer targeted ligands, contrast agents and therapeutic agents. Here we report the chemical synthesis and biological characterization of a new heptamethine dye, termed as IR-808DB, natively with multifunctional characteristics of cancer targeting, near-infrared fluorescence imaging, and efficient anticancer activity. The tumor inhibition effect of IR-808DB is higher than that of cyclophosphamide (CTX) toward a broad spectrum of tumor xenograft models. These findings provide IR-808DB a promising prospect as a new cancer theranostic agent that would enable integration of cancer targeted therapeutics and diagnostics without requirement of multi-component chemical conjugation.
Insights
We developed a novel heptamethine dye, IR-808DB, for integrated cancer diagnostics and therapy. This single-molecule agent demonstrates superior tumor inhibition compared to cyclophosphamide (CTX) in preclinical models.
Area of Science:
- Oncology
- Materials Science
- Biomedical Engineering
Background:
- Personalized oncology requires theranostic agents for combined cancer diagnosis and therapy.
- Current theranostics often involve complex, multi-step chemical conjugations.
- A simplified, single-agent approach is needed to improve efficiency and reduce production complexity.
Purpose of the Study:
- To synthesize and characterize a novel heptamethine dye, IR-808DB, with inherent theranostic capabilities.
- To evaluate IR-808DB's efficacy in cancer targeting, near-infrared (NIR) fluorescence imaging, and anticancer activity.
- To assess IR-808DB's therapeutic potential against various tumor xenografts.
Main Methods:
- Chemical synthesis of the heptamethine dye IR-808DB.
- Biological characterization including in vitro and in vivo studies.
- Evaluation of tumor inhibition effects in comparison to cyclophosphamide (CTX) in broad tumor xenograft models.
Main Results:
- IR-808DB was successfully synthesized with intrinsic multifunctional properties.
- The dye exhibits cancer targeting, NIR fluorescence imaging capabilities, and potent anticancer activity.
- IR-808DB demonstrated superior tumor inhibition compared to CTX across multiple tumor xenograft models.
Conclusions:
- IR-808DB is a promising single-agent theranostic candidate for integrated cancer therapy and diagnostics.
- Its native multifunctional characteristics eliminate the need for complex multi-component chemical conjugation.
- IR-808DB offers a simplified and potentially more effective approach for advanced cancer treatment strategies.
