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We showed that an extract (PC6) from cones of Pinus parviflora Sieb et Zucc induced the human T-cell line CEM to produce a pepsin-sensitive soluble factor(s) that could inhibit the replication of the type 1 human immunodeficiency virus (HIV-1) in CEM T cells, in U-937 histocytes, in THP-1 monocytes,
We have previously shown that PC6, a natural product extracted from cones of Pinus parviflora Sieb et Zucc, can inhibit the replication of human immunodeficiency virus type 1 (HIV-1) in CD4+ T cells and in monocyte/macrophage cell lines. Here, we show by immunoprecipitation of HIV-1 proteins with a
We have shown previously that two fractions (PC6 and PC7) extracted from cones of the Japanese white pine Pinus parvifloria Sieb. et Zucc have potent immunopotentiating effects. Here, we show that PC6 and PC7 inhibited HIV-1 replication (greater than 95%), in a dose-dependent manner, in chronically