NorthStrive files US patents for human muscle preservation
NorthStrive Biosciences, a subsidiary of PMGC Holdings Inc., filed two U.S. patent applications (19/709,895 and 19/709,950) for EL-22 and EL-32, expanding its IP portfolio into human pharmaceutical applications. The filings target the preservation of lean muscle mass in patients undergoing GLP-1 and obesity-related weight loss treatments, including specific claims for combination therapies and various delivery forms.

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NorthStrive Biosciences, a wholly-owned subsidiary of PMGC Holdings Inc., has filed two new U.S. patent applications to expand its EL-22 and EL-32 intellectual property portfolio into potential human pharmaceutical applications. The filings aim to preserve lean muscle mass in human patients experiencing muscle loss from GLP-1 and obesity-related weight loss treatments. The applications have been assigned U.S. Patent Application Nos. 19/709,895 for EL-22 and 19/709,950 for EL-32.
The new patent applications represent a strategic expansion from the company's previous focus on animal health and agricultural applications into potential human-use applications. The filings are directed toward preserving lean muscle mass in patients suffering from sarcopenia, obesity-related weight loss treatment, malnutrition, neurogenic atrophy, or physical inactivity. Both applications specifically address obesity-related weight loss treatments, including GLP-1 receptor agonists, as well as dual and triple agonist therapies targeting GLP-1, GIP, and/or glucagon pathways.
Patent Application Details
| Patent Application No. | Intellectual Property | Primary Focus |
|---|---|---|
| 19/709,895 | EL-22 | Human pharmaceutical applications |
| 19/709,950 | EL-32 | Human pharmaceutical applications |
New Human-Use Patent Claims
The newly filed applications include claims directed to the potential use of EL-22 and EL-32 to preserve lean muscle mass in patients undergoing obesity-related weight loss treatment. The claims cover various pharmaceutical product approaches and delivery methods.
- Human-use applications for preserving lean muscle mass in patients experiencing muscle loss from sarcopenia, obesity-related weight loss treatment, malnutrition, neurogenic atrophy, or physical inactivity.
- Use in patients undergoing obesity-related weight loss treatment, including GLP-1 receptor agonists, dual agonists targeting GLP-1, GIP, and/or glucagon pathways, and triple agonists targeting GLP-1, GIP, and glucagon pathways.
- EL-22 pharmaceutical product approaches involving isolated Myo-2 peptide, Myo-2 peptide multimers, and fusion proteins involving myostatin mature protein fused to Myo-2 peptide or Myo-2 peptide multimers.
- EL-32 pharmaceutical product approaches involving a microorganism transformed with a cell surface display vector linked to genes encoding myostatin and activin A proteins.
- EL-32 microorganism embodiments involving lactic acid bacteria, including Lactobacillus paracasei.
- Combination and co-administration approaches, including taking EL-22 or EL-32 together with apelin or ursolic acid, compounds associated with muscle support.
- Multiple pharmaceutically acceptable delivery forms, including oral, injectable, nasal, topical, and other delivery formats.
Expansion of the EL-22 and EL-32 IP Portfolio
The EL-22 application includes claims directed to pharmaceutical product approaches involving myostatin-derived Myo-2 peptide constructs for potential use in preserving lean muscle mass in humans. The filing includes claims directed to an isolated Myo-2 peptide, Myo-2 peptide multimers, a fusion protein of myostatin mature protein fused to a Myo-2 peptide, and a fusion protein of myostatin mature protein fused to a Myo-2 peptide multimer.
The EL-32 application includes claims directed to pharmaceutical product approaches involving a microorganism transformed with a cell surface display vector operably linked to genes encoding myostatin and activin A proteins. The filing includes claims directed to potential use of the microorganism to preserve lean muscle mass in a human patient, including embodiments involving lactic acid bacteria such as Lactobacillus paracasei.
Targeting a Major Emerging Need in the GLP-1 Market
The company believes the rapid adoption of GLP-1 and related incretin-based obesity treatments, such as semaglutide and tirzepatide, may create an emerging opportunity for complementary approaches focused on preserving lean muscle mass during weight loss. While GLP-1 and next-generation obesity therapies have become widely recognized for their role in weight management, the company believes maintaining lean muscle mass during obesity-related weight loss may become an increasingly important area of product development and clinical focus.
What is the anticipated timeline for the clinical trial process required to move these EL-22 and EL-32 applications from patent filing to human trials?
How might the regulatory pathway differ for the EL-32 microorganism approach involving Lactobacillus paracasei compared to the peptide-based EL-22 approach?
Could the expansion into human pharmaceuticals trigger strategic partnerships or licensing deals with major pharmaceutical companies currently developing GLP-1 therapies?


























