Antibody-drug conjugates containing two or more functional small molecule compounds for enhancing treatment of refractory diseases

By introducing branched structures to link functional small molecules into antibody-drug conjugates, the targeted therapeutic effect of ADCs is enhanced, solving the efficacy and toxicity problems of existing ADCs and enabling wider application in cancer treatment.

CN121729249APending Publication Date: 2026-03-24HANGZHOU DUOXI BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202480048034.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-05-24
Filing Date
2024-05-22
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Improving the efficacy and reducing the toxicity of existing antibody-drug conjugates (ADCs) in cancer treatment and expanding their application in various cancer treatments remains a challenge, especially given the increased toxicity caused by the need to increase the dosing frequency due to the short half-life of chemotherapy drugs.

Method used

By linking chemical drugs or functional small molecules through branched structures, antibody-drug conjugates (ADCs) are formed. These ADCs utilize affinity molecules to enhance the affinity of antibodies, thereby achieving synergistic effects with cytotoxic drugs and enhancing the efficacy of targeted therapy.

Benefits of technology

It improves the antitumor activity of antibody-drug conjugates in vivo, enhances the targeted therapeutic effect on various cancers and refractory diseases, reduces toxicity, and expands the range of therapeutic indications.

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Abstract

The invention provides an antibody drug conjugate containing a functional small molecule side chain. The antibody drug conjugate is used for enhancing the targeted therapeutic effect of cancers and refractory diseases. The invention also relates to a preparation method of the conjugate, a pharmaceutical composition and a method for treating refractory diseases.
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