A fusion protein comprising nil2 and iRGD and its use in the preparation of an anti-tumor drug

The fusion protein of NIL2 and iRGD forms an anti-tumor immunotherapy drug with dual synergistic effects by linking iRGD to the C-terminus of NIL2. This solves the side effect risks and drug interaction problems in the co-administration of IL-2 and iRGD, and achieves a highly efficient and safe tumor treatment effect.

CN122404574APending Publication Date: 2026-07-17XINXIANG MEDICAL UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINXIANG MEDICAL UNIV
Filing Date
2026-06-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The co-administration of IL-2 and iRGD in cancer treatment presents problems such as the risk of overlapping side effects, uncontrollable drug interactions, and amplified individual tolerance differences, which affect the treatment efficacy and safety.

Method used

A fusion protein of NIL2 and iRGD was designed, and iRGD was linked to the C-terminus of NIL2 to form an anti-tumor immunotherapy drug with dual synergistic effects. NIL2 acts as an immune-activating effector molecule, and iRGD acts as a tumor penetration carrier, which enhances drug delivery efficiency and promotes tumor tissue penetration.

Benefits of technology

It significantly reduces the IL-2 dose, activates the tumor immune response, improves drug utilization, reduces vascular permeability toxicity, enhances anti-tumor effects, reduces side effects, and improves drug administration safety.

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Abstract

本发明公开了一种包含NIL2与iRGD的融合蛋白及其在制备抗肿瘤药物中的应用,属于生物医药领域。本发明包含NIL2与iRGD的融合蛋白,所述iRGD的氨基酸序列如SEQ ID NO.3所示,所述NIL2的氨基酸序列如SEQ ID NO.4所示。本发明的融合蛋白的氨基酸序列如SEQ ID NO.1所示。本发明的融合蛋白具有双功能协同作用,既能作为免疫效应分子激活T细胞和NK细胞杀伤肿瘤细胞,又能增强融合蛋白在肿瘤附近的递送效率,减少刺激Treg细胞,降低血管渗透毒性,提高给药安全性。
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