PRODUCTS
RECEPTOR REGULATION (MP8)
INTRA-ARTICULAR THERAPY (MP30)
 
  Receptor Regulation (MP8)
   
  MP8 is a recombinant human protein that inhibits the signaling of both TNFα and IL-6 by causing cells to shed TNF and IL-6 receptors from their membrane.  It has a dual mechanism of action.  First, the released receptors function as a soluble trap to inactivate circulating TNF and IL-6 before they can bind to cells and transmit the inflammatory signal.  Second, MP8 eliminates the TNF and IL-6 binding sites on the cell surface, thereby preventing signal transduction from TNF or IL-6 that has evaded the soluble trap. 

Key Experimental Results

Meyer has tested MP8 in a variety of in vitro and in vivo models.  These studies have shown MP8 to be safe and well tolerated, stable, and highly specific for the TNF and IL-6 receptors. Bioinfomatics studies have shown MP8 to be conserved with an unusual degree of homology, implying that it plays a critical role in vivo

MP8 has been found to be highly efficacious in the following animal models:
  • LPS induced sepsis

  • Collagen induced arthritis (both developing & established)

  • Carageenan induced paw edema

  • Experimentally induced asthma

  • Autoimmune Encephalomyelitis (a model for multiple sclerosis)

Key Advantages of MP8:
MP8 offers a number of competitive advantages over currently marketed therapeutic agents:

Dual Mechanism of Action
MP8 causes release of cytokine receptors from the cell surface, which bind and inactivate circulating cytokine.  MP8 also eliminates the receptor binding sites from the cell membrane, thereby preventing signal transduction from free cytokine.

Multiple Pathway Inhibition
MP8 hinhibits both the TNFα and IL-6 pathways. 

Validated Targets/Established Development Path
TNF and IL-6 are well validated targets for treating inflammation, meaning that the development path for MP8 is well established.

Patient Friendly Administration
MP8 will be administered to patients on a weekly or bi-weekly schedule via subcutaneous injection, thus avoiding the need for intravenous infusion.
           
Low Manufacturing Cost
MP8 is a small single chain polypeptide produced in bacteria, implying significant cost and yield advantages. Glycosylation is not required.

Natural Protein
Unlike Enbrel®, Humira® and Remicade®, MP8 is a naturally occurring protein encoded in the human genome.  It should therefore be less immunogenic.

Strong Patent Position
Patents covering MP8 as a composition of matter (recombinant protein, fragments, and homologs), methods of use, and methods of production have been issued in the United States, and are granted or pending in 17 foreign jurisdictions.  Patent term including extensions will last through at least 2020. 

The patents also claim the discovery and testing of new agents that cause cytokine receptor shedding.

Humira® is a registered trademark of Abbott Biotechnology Ltd.
Remicade® is a registered trademark of Centocor, Inc.
Enbrel® is a registered trademark of Immunex Corporation.

       
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