COMPARATIVE-STUDIES OF THE ACTIN CYTOSKELETON RESPONSE TO MAITOTOXIN AND OKADAIC ACID

被引:20
作者
DIOGENE, G [1 ]
FESSARD, V [1 ]
DUBREUIL, A [1 ]
PUISEUXDAO, S [1 ]
机构
[1] INSERM,U303,F-06300 PARIS,FRANCE
关键词
D O I
10.1016/0887-2333(94)00186-X
中图分类号
R99 [毒物学(毒理学)];
学科分类号
100405 ;
摘要
The specific cytotoxic effects of phycotoxins on BHK 21 C13 fibroblasts in culture were studied with maitotoxin (MTX), okadaic acid (OA) and crude extracts from Gambierdiscus toxicus Adachi and Fukuyo and Prorocentrum lima Ehrenberg. These dinoflagellates produce MTX and OA respectively. MTX and G. toxicus crude extracts caused large blebs within minutes after exposure, in a dose-dependent manner. F-actin fibres decreased in number, then disappeared. An increase in fluorescence was observed at the periphery of the nucleus. For one strain of G. toxicus F-actin granules were also observed. Cells exposed to OA or P. lima crude extracts became polygonal in shape and then round. At low doses this effect occurred only after a 24-hr exposure. F-actin fibres crossing the cytoplasm were reduced in size and number then disappeared, while peripheral F-actin fibres became shorter giving the cell first a polygonal and then a round shape. According to these specific responses we have defined an MTX-like effect which is distinct from an OA-like effect. In both cases the amount of F-actin diminished at doses that did not affect cell viability.
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共 40 条
[1]  
ALEXANDRE H, 1991, DEVELOPMENT, V112, P971
[2]   SHORT-TIME CYTOTOXICITY OF MUSSEL EXTRACTS - A NEW BIOASSAY FOR OKADAIC ACID DETECTION [J].
AMZIL, Z ;
POUCHUS, YF ;
LEBOTERFF, J ;
ROUSSAKIS, C ;
VERBIST, JF ;
MARCAILLOULEBAUT, C ;
MASSELIN, P .
TOXICON, 1992, 30 (11) :1419-1425
[3]   LIGHT AND SCANNING ELECTRON-MICROSCOPIC STUDIES ON EFFECTS OF MARINE ALGAL TOXINS TOWARD FRESHLY PREPARED HEPATOCYTES [J].
AUNE, T ;
YASUMOTO, T ;
ENGELAND, E .
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH, 1991, 34 (01) :1-9
[4]   INHIBITORY EFFECT OF A MARINE-SPONGE TOXIN, OKADAIC ACID, ON PROTEIN PHOSPHATASES - SPECIFICITY AND KINETICS [J].
BIALOJAN, C ;
TAKAI, A .
BIOCHEMICAL JOURNAL, 1988, 256 (01) :283-290
[5]  
BODO M, 1993, MED SCI RES, V21, P223
[6]   CALYCULIN-A INCREASES THE LEVEL OF PROTEIN-PHOSPHORYLATION AND CHANGES THE SHAPE OF 3T3 FIBROBLASTS [J].
CHARTIER, L ;
RANKIN, LL ;
ALLEN, RE ;
KATO, Y ;
FUSETANI, N ;
KARAKI, H ;
WATABE, S ;
HARTSHORNE, DJ .
CELL MOTILITY AND THE CYTOSKELETON, 1991, 18 (01) :26-40
[7]   MODIFICATIONS OF MICROFILAMENTS AND MICROTUBULES INDUCED BY 2 HEPATIC TUMOR PROMOTERS, PHENOBARBITAL AND BILIVERDIN IN NONTRANSFORMED AND TRANSFORMED HEPATIC CELL-LINES [J].
DECLOITRE, F ;
LAFARGEFRAYSSINET, C ;
MARTIN, M ;
FRAYSSINET, C .
CELL BIOLOGY AND TOXICOLOGY, 1990, 6 (01) :23-34
[8]   CONCOMITANT ALTERATIONS OF MICROFILAMENTS AND MICROTUBULES IN HUMAN EPITHELIAL-CELLS (HBL-100) IN RELATION TO THEIR MALIGNANT CONVERSION [J].
DECLOITRE, F ;
CASSINGENA, R ;
ESTRADE, S ;
MARTIN, M .
TUMOR BIOLOGY, 1991, 12 (02) :111-119
[9]   PHORBOL ESTER-INDUCED REORGANIZATION OF THE CYTOSKELETON IN HUMAN FIBROBLASTS DURING AGING INVITRO [J].
DERVENTZI, A ;
RATTAN, SIS ;
CLARK, BFC .
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1992, 182 (03) :1423-1428
[10]   CYTOTOXIC QUANTIFICATION OF MAITOTOXIN-LIKE ACTIVITY FROM THE DINOFLAGELLATE GAMBIERDISCUS-TOXICUS [J].
DIOGENE, G ;
DUBREUIL, A ;
BREITTMAYER, JP ;
PUISEUXDAO, S .
TOXICOLOGY IN VITRO, 1994, 8 (01) :37-+