title: Inhibition of proliferation by agricultural plant extracts in seven human adult T-cell leukaemia (ATL)-related cell lines.
abstract: Adult T-cell leukaemia (ATL) is caused by human T-cell leukaemia virus type I (HTLV-I) infection and is resistant to conventional chemotherapy. We evaluated the inhibitory effects of agricultural plants on the proliferation of seven ATL-related human leukaemia cells, using three ATL cell lines (ED, Su9T01 and S1T), two human T-cell lines transformed by HTLV-I infection (HUT-102 and MT-2) and two HTLV-I-negative human T-cell acute lymphoblastic leukaemia cell lines (Jurkat and MOLT-4). A total of 52 samples of 80% ethanol extracts obtained from 30 types of agricultural plants were examined. On the basis of IC(50) values, we selected samples with greater activity than genistein, which was used as a positive control. The highest inhibitory effect was observed with extracts from leaves of Vaccinium virgatum Aiton (blueberry) on four cell lines (ED, Su9T01, HUT-102 and Jurkat); seeds of Momordica charantia L. (bitter gourd) exhibited the second highest activity. The bitter gourd seeds suppressed the proliferation of three cell lines (Su9T01, HUT-102 and Jurkat). The extracts from edible parts of Ipomea batatas LAM. (sweet potato), edible parts of Colocasia esculenta (L.) Schott (taro), skin of taro and seeds of Prunus mume Sieb. et Zucc. (mume) showed markedly greater inhibitory effects on Su9T01 than genistein. These findings suggest that ATL-preventative bioactive compounds may exist in these agricultural plants, which are considered to be functional foods.
authors.forename: Hisahiro
authors.initials: H
authors.lastname: Kai
authors.forename: Ena
authors.initials: E
authors.lastname: Akamatsu
authors.forename: Eri
authors.initials: E
authors.lastname: Torii
authors.forename: Hiroko
authors.initials: H
authors.lastname: Kodama
authors.forename: Chizuko
authors.initials: C
authors.lastname: Yukizaki
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Sakakibara
authors.forename: Masahito
authors.initials: M
authors.lastname: Suiko
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Morishita
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kataoka
authors.forename: Koji
authors.initials: K
authors.lastname: Matsuno
mesh_terms: D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D006801:Humans; D015459:Leukemia-Lymphoma, Adult T-Cell / Q000378:metabolism*; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology*; D029796:Vaccinium / Q000737:chemistry*
chemical_list: D010936:Plant Extracts