A near-infrared fluorescent diagnostic and therapeutic probe capable of real-time monitoring of ERα protein degradation, and its preparation method and application

By designing and synthesizing near-infrared fluorescence diagnostic and treatment probes that can monitor ERα protein degradation in real time, the problem of inaccurate monitoring of ERα protein in breast cancer treatment is solved, real-time monitoring and efficient degradation of ERα protein is achieved, and the treatment effect and accuracy are improved.

CN117736261BActive Publication Date: 2025-08-15WUCHANG UNIV OF TECH
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Patent Information

Application Number
CN202311647151.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-04
Publication Date
2025-08-15
Estimated Expiration
2043-12-04

AI Technical Summary

Technical Problem

The existing breast cancer treatment methods lack precise monitoring and real-time monitoring methods for ERα protein, resulting in poor treatment results.

Method used

A near-infrared fluorescence diagnostic and treatment probe that can monitor the degradation of ERα protein in real time was designed. A series of near-infrared fluorescence diagnostic and treatment probes were synthesized using a highly ERα-targeted fluorophore 2-(6-hydroxy-2-(4-hydroxystyrene)-4H-benzopyran-4-subunit)malonitrile, a highly ERα-targeted fluorophore, was used as a warhead for specifically binding to the target protein. Methyl VHL was used as a ligand to recruit E3 ligase, and carbon chains of different lengths were used as linkers to synthesize a series of near-infrared fluorescence diagnostic and treatment probes.

Benefits of technology

Real-time monitoring and efficient degradation of ERα protein are achieved, the accuracy and effectiveness of breast cancer treatment are improved, excellent anti-proliferative activity, and near-infrared visualization performance.

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Abstract

The present invention relates to the field of medical technology, and specifically discloses a near-infrared fluorescent diagnostic and therapeutic probe that can monitor ERα protein degradation in real time, as well as its preparation method and application. The highly ERα-targeting fluorophore 2-(6-hydroxy-2-(4-hydroxystyryl)-4H-benzopyran-4-subunit) malononitrile is used as a warhead that specifically binds to the target protein, methyl VHL is used as a ligand to recruit E3 ligase, and carbon chains of different lengths are used as linkers to design and synthesize a series of near-infrared fluorescent diagnostic and therapeutic probes that can monitor ERα protein degradation in real time. The diagnostic and therapeutic NIR probe of the present invention can not only effectively degrade ERα protein, but also exhibit excellent anti-proliferative activity. This innovative study successfully integrated PROTAC technology with a fluorescent probe targeting ERα for the first time, realizing real-time visualization of ERα protein degradation in MCF-7 cells. These results provide strong support for the potential application prospects of this type of compound in the treatment of breast cancer and expand the application field of PROTAC technology.
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