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DARPIN Compositions for Treating Shiga Toxin Diseases

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Published September 20th, 2023
Detected March 26th, 2026
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Summary

The USPTO has published a patent application (US20260085097A1) detailing DARPIN-containing compositions for treating Shiga toxin diseases. The application highlights the thermostability and high microbial expression yield of DARPin as advantages over antibody therapeutics.

What changed

This document is a published patent application from the USPTO concerning novel DARPIN-containing compositions and methods for treating Shiga toxin (Stx)-producing Escherichia coli (STEC) and related diseases, such as hemolytic uremic syndrome (HUS). The application emphasizes the high thermostability and efficient microbial expression of DARPin proteins, positioning them as a promising alternative to traditional antibody therapeutics. It covers monomer, dimer, and trimer protein forms, as well as pharmaceutical compositions and their applications.

While this is a patent application and not a regulatory rule, it signals potential future developments in therapeutic treatments for STEC-related diseases. Companies involved in pharmaceutical research and development, particularly in the areas of biologics and infectious disease treatments, should be aware of this technological advancement. No immediate compliance actions are required, but it may influence future R&D strategies and intellectual property considerations in the biopharmaceutical sector.

Source document (simplified)

← USPTO Patent Applications

DARPIN-CONTAINING COMPOSITIONS AND METHODS THEREOF

Application US20260085097A1 Kind: A1 Mar 26, 2026

Inventors

Zhilei CHEN, Yu ZENG, Zeyu PENG, Rudo SIMEON

Abstract

The present disclosure provides compositions comprising a designed ankyrin repeat protein (DARPin) for use in treating Shiga toxin (Stx)-producing Escherichia coli (STEC) and related diseases, including hemolytic uremic syndrome (HUS). The high thermostability and high microbial expression yield make DARPin an attractive alternative to antibody therapeutics. The present disclosure provides monomer proteins, dimer proteins, and trimer proteins, as well as pharmaceutical compositions and methods utilizing the same.

CPC Classifications

C07K 14/245 A61P 31/04 A61K 38/00 C07K 2318/20

Filing Date

2023-09-20

Application No.

19112736

View original document →

Named provisions

DARPIN-CONTAINING COMPOSITIONS AND METHODS THEREOF

Classification

Agency
USPTO
Published
September 20th, 2023
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
US20260085097A1

Who this affects

Applies to
Drug manufacturers Pharmaceutical companies
Industry sector
3254 Pharmaceutical Manufacturing 3254.1 Biotechnology
Activity scope
Drug Development Therapeutic Treatment
Geographic scope
United States US

Taxonomy

Primary area
Pharmaceuticals
Operational domain
Research & Development
Compliance frameworks
FDA 21 CFR Part 11 GxP
Topics
Biotechnology Infectious Diseases

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