The Involvement of Microtubules in the Light Response of Medaka Melanophores : Physiology
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概要
- 論文の詳細を見る
The light response of isolated medaka melanophores is accompanied by remarkable changes in cell shape; the peripheral region is extended in light and retracted in the dark. This change in the peripheral region of the cytoplasm can be prevented by the antimitotic agents, colcemid and nocodazole, and by cytochalasin B. The dark-induced aggregation of melanosomes is scarcely inhibited by antimitotic agents or cyiochalasin B, while the pigment dispersion induced by irradiation is prevented almost completely by antimitotic agents and partially by cytochalasin B. When melanophores are treated with colcemid or nocodazole in the dark, their radially-arrayed microtubules disappear and the cell outline becomes irregular. However, the distribution of microtubules is preserved in the light-dispersed cells even after treatment with antimitotic agents. These findings suggest that microtubules of the normal number and distribution, and not microfilaments, are required for the centrifugal pigment migration of melanophores responding to light and for the retainment of cell shape.
- 社団法人日本動物学会の論文
- 1988-10-15
著者
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Negishi S
Department Of Biology Keio University
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Negishi Sumiko
Department Of Biology Keio University
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