Published Technical Disclosure Archive

Enhanced Multimodal Chromatography Method for HIV-1 Envelope Glycoprotein Purification

Publication ID: 24-11857619_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Multimodal Chromatography Method for HIV-1 Envelope Glycoprotein Purification,” Published Technical Disclosure No. 24-11857619_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857619_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,619.

Summary of the Inventive Concept

An improved multimodal chromatography method for purifying HIV-1 envelope glycoprotein, enhancing purification efficiency, and reducing protein aggregation through real-time monitoring and optimized purification conditions.

Background and Problem Solved

The original patent for multimodal chromatography method for purifying HIV-1 envelope glycoprotein has limitations in terms of purification efficiency and protein aggregation. The new inventive concept addresses these limitations by introducing real-time monitoring, optimized purification conditions, and novel multimodal resins to improve the overall purification process.

Detailed Description of the Inventive Concept

The new inventive concept comprises a system for purifying HIV-1 envelope glycoprotein using a multimodal chromatography column and a control unit configured to optimize purification conditions based on real-time monitoring of protein aggregation. The method involves capturing the protein on a multimodal resin and eluting the protein using a gradient of salt concentration and pH. The multimodal resin is designed with a polymer matrix and a ligand that selectively binds to the glycoprotein, wherein the ligand is a synthetic peptide derived from a CD4 receptor. The purification process can be further optimized using a combination of temperature and ionic strength gradients. The system also includes a sensor for detecting protein aggregation and a control unit configured to adjust purification conditions in response to the detected aggregation.

Novelty and Inventive Step

The new inventive concept introduces novel features such as real-time monitoring, optimized purification conditions, and a synthetic peptide-derived ligand, which are not present in the original patent. These features provide a significant improvement in purification efficiency and reduction in protein aggregation, making the new inventive concept non-obvious and novel compared to the original patent.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept include using different types of multimodal resins, varying the gradient conditions, and incorporating additional sensors for detecting protein aggregation. Variations of the system can also be designed for specific types of HIV-1 envelope glycoproteins, such as clade C or mosaic gp140 proteins.

Potential Commercial Applications and Market

The enhanced multimodal chromatography method has significant commercial potential in the biotechnology and pharmaceutical industries, particularly in the development of HIV vaccines and therapies. The improved purification efficiency and reduced protein aggregation can lead to higher yields and better quality of HIV-1 envelope glycoproteins, making it an attractive solution for companies involved in HIV research and development.

CPC Classifications

SectionClassGroup
A A61 A61K39/21
C C07 C07K1/18
C C07 C07K14/005
C C07 C07K14/162
C C12 C12N7/02
A A61 A61K2039/53
C C12 C12N2740/16051
C C12 C12N2740/16111
C C12 C12N2740/16122
C C12 C12N2740/16134

Field of Art

Biotechnology and protein purification, specifically focused on HIV envelope glycoprotein isolation techniques, requiring expertise in chromatography, protein chemistry, and molecular biology with advanced degrees and specialized training in protein purification methodologies

Person of Ordinary Skill (PHOSITA) Profile

A PhD-level biochemist or molecular biologist with expertise in protein purification techniques, multimodal chromatography, and experience with viral protein isolation, familiar with advanced separation technologies and protein engineering strategies

Obviousness Rationale

A skilled practitioner would recognize that the PTD's proposed variations represent predictable engineering modifications to the source patent's multimodal chromatography method. The additional features of real-time monitoring, gradient optimization, and synthetic peptide ligands are logical extensions of known protein purification techniques. These incremental improvements would be considered routine optimization within the skill set of an experienced protein purification specialist.

Obvious Combinations & Variations

Source Patent Element
Multimodal resin for capturing HIV-1 gp140 protein
PTD Variation
Adding a synthetic peptide derived from CD4 receptor as a selective ligand
Obviousness Reasoning
Designing ligand-specific binding mechanisms is a standard protein purification technique, representing a predictable variation that would enhance capture specificity
Source Patent Element
Basic multimodal chromatography process
PTD Variation
Implementing real-time protein aggregation monitoring with adaptive control systems
Obviousness Reasoning
Integrating sensor technologies for process monitoring is a known engineering approach for improving protein purification efficiency, representing a logical technological progression
Source Patent Element
Standard elution techniques using salt concentration
PTD Variation
Introducing combined temperature and ionic strength gradient elution
Obviousness Reasoning
Exploring multiple gradient parameters is a routine optimization strategy in protein separation science, offering predictable potential improvements in separation efficiency
Source Patent Element
Basic HIV-1 gp140 protein purification method
PTD Variation
Developing specialized purification approaches for specific HIV clades
Obviousness Reasoning
Adapting purification techniques for variant protein types is a standard practice in biotechnology, representing an expected design variation
Source Patent Element
Multimodal chromatography column design
PTD Variation
Incorporating advanced polymer matrix with selective binding characteristics
Obviousness Reasoning
Modifying resin composition to enhance protein capture is a predictable engineering approach within protein purification technology
35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. ยง 103, the variations disclosed in this Published Technical Disclosure would be considered obvious to a Person Having Ordinary Skill In The Art based on the teachings of US Patent 11857619, as the proposed modifications represent routine optimization and predictable engineering extensions of existing multimodal chromatography techniques for HIV-1 envelope glycoprotein purification.

Original Patent Information

Patent NumberUS 11,857,619
TitleMultimodal chromatography method for the purification of HIV-1 envelope glycoprotein
Assignee(s)Janssen Vaccines & Prevention B.V.