Expanding BCG-primed Antigen Presenting Cells to Novel Therapeutic Applications

Publication ID: 24-11857612_0007_PTD
Published: October 28, 2025
Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Expanding BCG-primed Antigen Presenting Cells to Novel Therapeutic Applications,” Published Technical Disclosure No. 24-11857612_0007_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857612_0007_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. 11,857,612.

Summary of the Inventive Concept

This inventive concept leverages the core technology of BCG-primed antigen presenting cells to treat a range of diseases beyond bladder cancer, including autoimmune disorders, graft rejection, neurological disorders, and enhancing immune response to vaccines.

Background and Problem Solved

The original patent focused on treating bladder cancer using BCG-primed antigen presenting cells. However, this technology has broader potential. Current treatments for autoimmune disorders, graft rejection, and neurological disorders often have limited efficacy or significant side effects. This inventive concept addresses these limitations by applying the core technology to these new applications, providing a more targeted and effective approach.

Detailed Description of the Inventive Concept

The new claims describe systems, methods, and devices for treating autoimmune disorders, preventing graft rejection, and treating neurological disorders using BCG-primed antigen presenting cells. These cells are isolated from subjects treated with Bacillus Calmette-Guerin (BCG) and cultured with IL-15 based superagonists. The inventive concept involves administering these cells to subjects in need, using devices and systems designed for efficient delivery and monitoring. The composition and administration of the antigen presenting cells are critical components, as they enable targeted immune responses and improved treatment outcomes.

Novelty and Inventive Step

The new claims introduce novel applications and use cases for the core technology, expanding its scope beyond bladder cancer. The inventive step lies in recognizing the potential of BCG-primed antigen presenting cells to address unmet needs in autoimmune disorders, graft rejection, and neurological disorders, and developing systems, methods, and devices to realize this potential.

Alternative Embodiments and Variations

Alternative embodiments could include modifying the composition of the antigen presenting cells, adjusting the dosage and administration protocols, or incorporating additional therapeutic agents to enhance treatment outcomes. Variations may also involve using different sources of antigen presenting cells or alternative IL-15 based superagonists.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the fields of autoimmune disorders, organ transplantation, and neurological disorders. The market for these applications is substantial, with millions of people worldwide affected by these conditions. The inventive concept offers a promising solution with potential for significant revenue growth and improved patient outcomes.

CPC Classifications

SectionClassGroup
A A61 A61K39/04
A A61 A61K35/15
A A61 A61K39/00114
A A61 A61K39/001119
A A61 A61K39/39
A A61 A61K2039/515
A A61 A61K2039/585

Field of Art

Immunotherapy and cellular therapeutics, specifically focused on antigen presenting cells (APCs), immunomodulation, and treatment of immune-related disorders

Person of Ordinary Skill (PHOSITA) Profile

A skilled researcher with expertise in immunology, cell biology, and biotechnology, holding a PhD or equivalent professional experience in developing cellular therapies, familiar with immune cell manipulation, cytokine interactions, and therapeutic applications of specialized cell populations

Obviousness Rationale

A PHOSITA would recognize that the core technology of BCG-primed antigen presenting cells cultured with IL-15 superagonists represents a versatile platform technology with broad potential applications beyond bladder cancer. The fundamental immunomodulatory mechanism of these cells suggests predictable therapeutic potential across multiple immune-mediated conditions. The systematic expansion of the original patent's core technology into new disease domains represents an expected progression of scientific understanding.

Obvious Combinations & Variations

Source Patent Element
BCG-primed antigen presenting cells isolated from urine or bladder mucosa
PTD Variation
Applying these cells to treat autoimmune disorders and neurological conditions
Obviousness Reasoning
Known immunomodulatory properties of APCs suggest predictable therapeutic potential across inflammatory and immune-mediated diseases
Source Patent Element
IL-15:IL-15Rα fusion protein complex for immune activation
PTD Variation
Using the same cellular mechanism to enhance vaccine immune responses and prevent graft rejection
Obviousness Reasoning
Established immunological principles indicate that enhancing APC function can improve immune system modulation across different clinical contexts
Source Patent Element
Method of isolating and culturing antigen presenting cells
PTD Variation
Developing specialized delivery devices and administration systems for cellular therapy
Obviousness Reasoning
Translating laboratory techniques into clinical delivery is a standard engineering design choice for therapeutic technologies
Source Patent Element
Cancer immunotherapy approach using BCG-primed cells
PTD Variation
Extending cellular therapy principles to non-oncological immune-mediated conditions
Obviousness Reasoning
Recognizing common immunological mechanisms across different disease states is a standard scientific approach to therapeutic development
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857612, a person having ordinary skill in the art would find the variations disclosed in this publication obvious and predictable extensions of the original cellular therapy technology. The systematic application of BCG-primed antigen presenting cells to diverse therapeutic contexts represents an expected progression of the foundational immunological principles established in the source patent, thereby rendering subsequent claims of novelty obvious under 35 U.S.C. § 103.

Original Patent Information

Patent NumberUS 11,857,612
TitleBacillus Calmette-Guerin (BCG) and antigen presenting cells for treatment of bladder cancer
Assignee(s)NantCell, Inc.