Enhanced Self-Replicating Cell Selective Gene Delivery Systems

Publication ID: 24-11857598_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Self-Replicating Cell Selective Gene Delivery Systems,” Published Technical Disclosure No. 24-11857598_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857598_0006_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. 11,857,598.

Summary of the Inventive Concept

Improved gene delivery compositions, methods, and uses for targeted therapy in self-replicating cells, overcoming limitations of existing approaches.

Background and Problem Solved

Despite advances in gene therapy, existing self-replicating cell selective gene delivery compositions suffer from inefficient targeting, limited protein expression, and inadequate safety profiles. The original patent addressed some of these limitations, but there remains a need for further enhancements to improve efficacy, efficiency, and safety.

Detailed Description of the Inventive Concept

The new inventive concept introduces a system for delivering gene therapy to self-replicating cells, comprising a polyribonucleotide with a modified RNA molecule of interest and a microRNA target sequence, along with a delivery mechanism for selective targeting. Additionally, the concept includes methods for enhancing gene delivery, compositions for gene therapy, and systems for real-time monitoring and improving efficiency. These enhancements address the limitations of the original patent by providing more effective, safer, and more efficient gene delivery to self-replicating cells.

Novelty and Inventive Step

The new claims introduce novel modifications to the polyribonucleotide, such as the use of Venezuelan Equine Encephalitis viral replicase, circular polyribonucleotides, and liposome-based delivery mechanisms, which provide a non-obvious solution to the problems of inefficient targeting and limited protein expression.

Alternative Embodiments and Variations

Alternative embodiments may include the use of different viral replicases, modified RNA molecules, or alternative delivery mechanisms, such as nanoparticles or viral vectors. Variations may also include the incorporation of additional nonstructural viral proteins or the use of different microRNA target sequences.

Potential Commercial Applications and Market

The enhanced self-replicating cell selective gene delivery systems have significant commercial potential in the gene therapy market, particularly in the treatment of cancer, genetic disorders, and other diseases. The targeted and efficient delivery of gene therapy to self-replicating cells can provide a competitive advantage in the market, with potential applications in pharmaceutical, biotechnology, and research industries.

CPC Classifications

SectionClassGroup
A A61 A61K38/1709
A A61 A61K31/7088
A A61 A61K31/7115
C C12 C12Y207/07048
C C12 C12N2310/113
C C12 C12N2710/10343

Field of Art

Molecular biology and gene therapy, specifically focusing on RNA-based delivery systems for therapeutic interventions, with expertise in viral replicase technologies, gene expression modulation, and targeted cellular delivery mechanisms

Person of Ordinary Skill (PHOSITA) Profile

A molecular biologist or genetic engineer with advanced training in RNA engineering, viral vector design, and gene delivery techniques, possessing knowledge of microRNA interactions, viral replicase systems, and cellular targeting strategies

Obviousness Rationale

A person skilled in the art would recognize that the PTD's variations represent predictable extensions of the source patent's core technology, utilizing known molecular biology techniques to incrementally improve gene delivery systems. The proposed modifications leverage standard approaches in RNA engineering and viral replication mechanisms that would be readily apparent to an experienced practitioner in the field. The combinations represent logical refinements that address known limitations in gene delivery technologies by applying well-established molecular biology principles.

Obvious Combinations & Variations

Source Patent Element
Polyribonucleotide with RNA molecule of interest encoding specific proteins
PTD Variation
Introduction of Venezuelan Equine Encephalitis viral replicase and circular polyribonucleotide structure
Obviousness Reasoning
A PHOSITA would find it obvious to modify viral replicase types and RNA molecular geometry as routine optimization techniques in gene delivery systems, with predictable results in enhancing cellular targeting and gene expression
Source Patent Element
Gene delivery composition with microRNA target sequence
PTD Variation
Incorporation of liposome-based delivery mechanism and real-time monitoring sensors
Obviousness Reasoning
Combining delivery vehicles with monitoring technologies represents a known approach in gene therapy, with multiple established methods for enhancing cellular uptake and tracking gene expression
Source Patent Element
RNA molecule capable of translating nonstructural viral proteins
PTD Variation
Selective targeting of self-replicating cells using modified RNA constructs
Obviousness Reasoning
Refining cellular targeting strategies by modifying RNA molecular characteristics is a predictable solution within the state of the art, representing a finite set of known optimization techniques
Source Patent Element
Base polyribonucleotide composition for gene delivery
PTD Variation
Enhanced delivery mechanisms including nanoparticles and alternative viral vectors
Obviousness Reasoning
Exploring alternative delivery mechanisms is a standard approach in gene therapy, with multiple known techniques for improving cellular penetration and gene expression
Source Patent Element
RNA molecules encoding specific therapeutic proteins
PTD Variation
Expanded protein selection and modified RNA molecule configurations
Obviousness Reasoning
Systematic exploration of protein variants and RNA molecular modifications represents a routine optimization strategy in molecular biology, with predictable outcomes based on established engineering principles
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857598 and the disclosed technical variations, a person having ordinary skill in the art would find the proposed gene delivery system modifications obvious and lacking inventive step. The incremental improvements represent predictable applications of known molecular biology techniques, thereby rendering subsequent claims of novelty invalid under 35 U.S.C. Section 103 obviousness standards.

Original Patent Information

Patent NumberUS 11,857,598
TitleSelf-replicating cell selective gene delivery compositions, methods, and uses thereof
Assignee(s)University of South Florida