β, β-Dimethylacrylshikonin (Isoarnebin I) is a naphthoquinone derivative that can be isolated from Lithospermum erythrorhizon Sieb. et Zucc. β, β-Dimethylacrylshikonin promotes angiogenesis by inducing eNOS, VEGF and HIF-1α expression through the PI3K-dependent pathway. β, β-Dimethylacrylshikonin inhibits Notch-1 activation. β, β-Dimethylacrylshikonin inhibtis tumor cell proliferation, induces tumor cell apoptosis, and inhibits tumor growth[1][2][3][4].