Abstract
Solid tumors depend on angiogenesis for their growth. In a transgenic mouse model of pancreatic islet cell carcinogenesis (RIP1-Tag2), an angiogenic switch occurs in premalignant lesions, and angiogenesis persists during progression to expansive solid tumors and invasive carcinomas. RIP1-Tag2 mice were treated so as to compare the effects of four angiogenesis inhibitors at three distinct stages of disease progression. AGM-1470, angiostatin, BB-94, and endostatin each produced distinct efficacy profiles in trials aimed at preventing the angiogenic switch in premalignant lesions, intervening in the rapid expansion of small tumors, or inducing the regression of large end-stage cancers. Thus, anti-angiogenic drugs may prove most efficacious when they are targeted to specific stages of cancer.
Publication types
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Comparative Study
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Angiostatins
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Animals
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Anticarcinogenic Agents / pharmacology
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Antineoplastic Agents / pharmacology*
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Apoptosis
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Carcinoma, Islet Cell / blood supply
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Carcinoma, Islet Cell / drug therapy*
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Carcinoma, Islet Cell / pathology
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Carcinoma, Islet Cell / prevention & control
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Collagen / pharmacology
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Cyclohexanes
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Disease Progression
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Drug Evaluation, Preclinical
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Endostatins
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Female
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Male
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Mice
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Mice, Inbred C57BL
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Mice, Transgenic
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Neoplasm Staging
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Neovascularization, Pathologic / prevention & control*
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O-(Chloroacetylcarbamoyl)fumagillol
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Pancreatic Neoplasms / blood supply
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Pancreatic Neoplasms / drug therapy*
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Pancreatic Neoplasms / pathology
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Pancreatic Neoplasms / prevention & control
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Peptide Fragments / pharmacology
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Phenylalanine / analogs & derivatives
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Phenylalanine / pharmacology
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Plasminogen / pharmacology
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Sesquiterpenes / pharmacology
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Thiophenes / pharmacology
Substances
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Anticarcinogenic Agents
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Antineoplastic Agents
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Cyclohexanes
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Endostatins
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Peptide Fragments
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Sesquiterpenes
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Thiophenes
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Phenylalanine
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Angiostatins
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Plasminogen
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Collagen
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batimastat
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O-(Chloroacetylcarbamoyl)fumagillol