MSI_000015461

D000890 - Anti-Infective Agents > D000977 - Antiparasitic Agents > D000981 - Antiprotozoal Agents D006133 - Growth Substances > D043924 - Angiogenesis Modulating Agents D004791 - Enzyme Inhibitors > D011500 - Protein Synthesis Inhibitors D000970 - Antineoplastic Agents > D020533 - Angiogenesis Inhibitors D006133 - Growth Substances > D006131 - Growth Inhibitors Halofuginone is a low molecular weight quinazolinone alkaloid, and a potent inhibitor of collagen alpha1(I) and matrix metalloproteinase 2 (MMP-2) gene expression. Halofuginone also effectively suppresses tumor progression and metastasis in mice. Collgard Biopharmaceuticals is developing halofuginone for the treatment of scleroderma and received orphan drug designation from the U.S. Food and Drug Administration in March, 2000. Halofuginone is a natural product found in Hydrangea febrifuga with data available. Halofuginone is an orally-active quinazolinone alkaloid with potential antineoplastic activity. Halofuginone interferes with the signaling pathway of transforming growth factor beta (TGF beta) and inhibits expression of matrix metalloproteinase 2, thereby inhibiting collagen type I synthesis and inducing extracellular matrix degradation, resulting in inhibition of angiogenesis, tumor growth, or metastasis. C274 - Antineoplastic Agent > C1742 - Angiogenesis Inhibitor > C1971 - Angiogenesis Activator Inhibitor Halofuginone (RU-19110), a Febrifugine derivative, is a competitive prolyl-tRNA synthetase inhibitor with a Ki of 18.3 nM[1][2]. Halofuginone is a specific inhibitor of type-I collagen synthesis and attenuates osteoarthritis (OA) by inhibition of TGF-β activity[3][4]. Halofuginone is also a potent pulmonary vasodilator by activating Kv channels and blocking voltage-gated, receptor-operated and store-operated Ca2+ channels. Halofuginone has anti-malaria, anti-inflammatory, anti-cancer, anti-fibrosis effects[5].