Effects of spinach powder fat-soluble extract on proliferation of human gastric adenocarcinoma cells

• Published in: Biomedical and environmental sciences Vol. 12; no. 4; p. 247
• Main Authors: He, T, Huang, C Y, Chen, H, Hou, Y H
• Format: Journal Article
• Language: English
• Published: China 01-12-1999
• Subjects: Adenocarcinoma - pathology; Cell Division - drug effects; Humans; Plant Extracts - pharmacology; Solubility; Spinacia oleracea; Stomach Neoplasms - pathology; Tumor Cells, Cultured
• ISSN: 0895-3988

Four kinds of assays were used to study the effect of a fat-soluble extract of spinach powder (SPFE) on the proliferation of human gastric adenocarcinoma cell line (SGC-7901) in vitro. These studies included: (i) cell growth assay, (ii) colony forming assay, (iii) MTT colorimetric assay, and (iv) 3H-TdR incorporation assay. The concentrations of SPFE expressed as the level of beta-carotene in the medium were 2 x 10(-8), 2 x 10(-7) and 2 x 10(-6) mol/L beta-carotene in assay (i)-(iii), but 4 x 10(-8), 4 x 10(-7) and 4 x 10(-6) mol/L beta-carotene in assay (iv) respectively. The results indicated that SPFE inhibited the proliferation and colony forming ability of SGC-7901 cells. And in MTT assay, SPFE inhibited the viability of SGC-7901 cells, but no inhibitory effect of SPFE was observed on the viability of lymphocytes in peripheral blood of healthy people. Finally, in the 3H-TdR incorporation test, both SPFE and beta-carotene showed significant inhibitory effects on DNA synthesis in SGC-7901 cells, but SPFE was more effective than beta-carotene.