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New Drug R&D Monitor
 
Title: Sinobiomed files patents for innovative products (2008)
Type: New Biopharmaceutical
Status: Preclinical
Targeted
Indication(s):
Turberculosis, stroke, peripheral vascular disorders, blood clots and thrombosis
Developer(s):

Sinobiomed

Description
/Summary:
Sinobiomed, Inc. (OTCBB: SOBM) announced on August 21 that it applied for a Chinese and an international patent for recombinant human kallikrein-1 (rhK1), and for a Chinese patent for an innovative recombinant multivalent tuberculosis vaccine.

rhK1

rhK1 is a product Sinobiomed is developing for the treatment of stroke and peripheral vascular disorders, and for the prevention of blood clots and thrombosis. The patent applications are for the method of preparation and for the aqueous formulation used for injecting the treatment.

Human Kallikreins are enzymes involved in multiple physiological processes in the body, including blood clotting and inflammation. Currently, commercial drugs containing kallikrein-1 in China and Japan are extracted from human urine or animal pancreas. Sinobiomed has succeeded in developing world's first recombinant human kallikrein-1 in the yeast, Pichia pastoris, with a purity of not less than 98% and low production costs.

The Company has submitted its international patent application (PCT/CN2007/070800; "Human kallikrein-1 and its preparative methods") to the Patent Cooperation Treaty (PCT). It has also applied to China's State Intellectual Property Office (SIPO) for a Chinese patent for the aqueous formulation for injection (Application Number 2008100384222; "Stable pharmaceutical formulation for injection").

Recombinant multivalent tuberculosis vaccine

The second Chinese patent application is for an innovative recombinant multivalent tuberculosis vaccine. Sinobiomed is developing this vaccine in response to the significant recent rise in the incidence of tuberculosis around the world and the lack of a vaccine to protect all ages and those living in areas where tuberculosis is prevalent.

Bacille Calmette Guerin (BCG) is the world's most widely used vaccination for tuberculosis. Made of a live, weakened strain of a cousin of the TB bacteria and developed in the 1930's, it remains the only vaccination available against tuberculosis today. It is used because it is effective in reducing the likelihood and severity of TB in infants and young children.

BCG, however, appears to be less effective on adults and provides almost no protection for people in areas where tuberculosis is prevalent. Sinobiomed's patent application is for a recombinant multivalent vaccine comprising four major antigens of bacillus tuberculosis expressed in Pichia Pastoris. The recombinant multivalent vaccine is prepared using different ratios of four components, with assistance from different adjuvants. Preliminary animal tests indicate that this vaccine can generate good immunogenicity.

The Company has submitted its application to SIPO for a Chinese patent for the multivalent tuberculosis vaccine (200710173372.4; "The preparation of a recombinant multivalent tuberculosis vaccine").
Additional
Info/Comments:
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