Advances and prospects of anginex as a promising anti-angiogenesis and anti-tumor agent

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Abstract

Anginex, a novel artificial cytokine-like peptide (βpep-25), is designed by using basic folding principles and incorporating short sequences from the β-sheet domains of anti-angiogenic agents, including platelet factor-4 (PF4), interleukin-8 (IL-8), and bactericidal-permeability increasing protein 1 (BP1). Anginex can specially block the adhesion and migration of the angiogenically activated endothelial cells (ECs), leading to apoptosis and ultimately to the inhibition of angiogenesis and tumor growth. In vitro and in vivo studies have proved its inhibitory effects on the formation of new blood vessels and tumor growth even though the mechanism is not clear. The inhibitory effects of anginex can be enhanced when it is applied in combination with other therapies, such as chemotherapy, radiotherapy and other anti-angiogenic agents. The limitations of anginex, including poor stability, short half life, complicated synthesis and low purity, have been conquered by modifying its structure or designing novel compound anginex and recombinant anginex, which makes possible the clinical application of anginex. Here, we summarize the basic and preclinical trials of anginex and discuss the prospects of anginex in clinical application. We come to the conclusion that anginex and compound or recombinant anginex can be used as effective anti-angiogenic agents.

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