title: The depletion of securin enhances butein-induced apoptosis and tumor inhibition in human colorectal cancer.
abstract: Butein (3,4,2',4'-tetrahydroxychalcone) is a promising natural polyphenolic compound that shows the growth inhibitory activity in human cancer cells; however, the precise mechanism is still unclear. Securin plays pivotal role in cancer cell proliferation and tumorigenesis. Here, we report the presence of securin that could modulate apoptosis and tumor growth ability in the butein-treated human colorectal cancer. Butein induced caspase-3 activation and PARP protein cleavage for apoptosis induction in human colorectal cancer cells. Interestingly, butein reduced the securin protein levels but conversely increased the phospho-histone H3 proteins, mitotic arrest and abnormal chromosomes segregation in cancer cells. The securin-null colorectal cancer cells were more sensitive on the reduction of cell viability than the securin-wild type cancer cells following butein treatment. The loss of securin in human colorectal cancer cells decreased tumor growth ability in nude mice. Moreover, butein reduced the tumor size of xenografted human colorectal tumors of nude mice. Taken together, this study demonstrates for the first time that the depletion of securin mediates the butein-induced apoptosis and colorectal tumor inhibition.
authors.affiliation: Department and Institute of Biological Science and Technology, National Chiao Tung University, Hsinchu 30050, Taiwan.
authors.forename: Yu-Tin
authors.initials: YT
authors.lastname: Huang
authors.affiliation: Department and Institute of Biological Science and Technology, National Chiao Tung University, Hsinchu 30050, Taiwan; Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu 30050, Taiwan.
authors.forename: Chien-I
authors.initials: CI
authors.lastname: Lin
authors.affiliation: Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu 30050, Taiwan.
authors.forename: Pei-Hsuan
authors.initials: PH
authors.lastname: Chien
authors.affiliation: Department and Institute of Biological Science and Technology, National Chiao Tung University, Hsinchu 30050, Taiwan.
authors.forename: Tsai-Tai
authors.initials: TT
authors.lastname: Tang
authors.affiliation: Hemato-Oncology Section, Department of Internal Medicine, Mackay Memorial Hospital, Taipei 10449, Taiwan.
authors.forename: Johnson
authors.initials: J
authors.lastname: Lin
authors.affiliation: Department and Institute of Biological Science and Technology, National Chiao Tung University, Hsinchu 30050, Taiwan; Institute of Molecular Medicine and Bioengineering, National Chiao Tung University, Hsinchu 30050, Taiwan. Electronic address: jichao@faculty.nctu.edu.tw.
authors.forename: Jui-I
authors.initials: JI
authors.lastname: Chao
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects*; D015153:Blotting, Western; D045744:Cell Line, Tumor; D047188:Chalcones / Q000494:pharmacology*; D015179:Colorectal Neoplasms / Q000188:drug therapy / Q000503:physiopathology*; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D055786:Gene Knockout Techniques; D006801:Humans; D051379:Mice; D008819:Mice, Nude; D064249:Securin / Q000235:genetics* / Q000378:metabolism
chemical_list: D047188:Chalcones; D064249:Securin; C040918:butein
keywords: Apoptosis; Butein; Colorectal tumor inhibition; Mitosis; Securin