| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Vasoactive intestinal peptide (VIP), an octacosapeptide, is a member of the glucagon/secretin superfamily, which acts as major peptide transmitters in central and peripheral nervous systems. Although VIP and its derivatives have been thought to be promising drug candidates for airway inflammatory diseases such as asthma and chronic obstructive pulmonary disease (COPD), the therapeutic potential of VIP and its derivatives is highly limited because of rapid metabolic degradation and systemic side effects following systemic administration. The present study aimed to design a PEGylated VIP derivative with improved metabolic stability, and develop its respirable powder (RP) formulation for inhalation therapy. PEGylation of a VIP derivative, as well as its strategic application to the RP formulation, may be a viable approach to improve its therapeutic potential for the treatment of airway inflammatory diseases.
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