Localization of Myosin and Actin in the Pelage and Whisker Hair Follicles of Rat
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概要
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The combined effects of myosin II and actin enable muscle and nonmuscle cells to generate forces required for muscle contraction, cell division, cell migration, cellular morphological changes, the maintenance of cellular tension and polarity, and so on. However, except for the case of muscle contraction, the details are poorly understood. We focus on nonmuscle myosin and actin in the formation and maintenance of hair and skin, which include highly active processes in mammalian life with respect to the cellular proliferation, differentiation, and movement. The localization of nonmuscle myosin II and actin in neonatal rat dorsal skin, mystacial pad, hair follicles, and vibrissal follicles was studied by immunohistochemical technique to provide the basis for the elucidation of the roles of these proteins. Specificities of the antibodies were verified by using samples from the relevant tissues and subjecting them to immunoblotting test prior to morphological analyses. The myosin and actin were abundant and colocalized in the spinous and granular layers but scarce in the basal layer of the dorsal and mystacial epidermis. In hair and vibrissal follicles, nonmuscle myosin and actin were colocalized in the outer root sheath and some hair matrix cells adjoining dermal papillae. In contrast, most areas of the inner root sheath and hair matrix appeared to comprise very small amounts of myosin and actin. Hair shaft may comprise significant myosin during the course of its keratinization. These results suggest that the actin-myosin system plays a part in cell movement, differentiation, protection and other key functions of skin and hair cells.
- 日本組織細胞化学会の論文
著者
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Matsuzaki Toshiyuki
Department of Anatomy and Cell Biology, Gunma University School of Medicine
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Takata Kuniaki
Department of Anatomy and Cell Biology, Gunma University School of Medicine
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Morioka Kiyokazu
Em Laboratory The Tokyo Metropolitan Institute Of Medical Science
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Takata Kuniaki
Department Of Anatomy And Cell Biology Gunma University Graduate School Of Medicine
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Matsuzaki Toshiyuki
Department Of Anatomy And Cell Biology Gunma University Graduate School Of Medicine
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Matsuzaki Toshiyuki
Department of Anatomy and Cell Biology, Gunma University Graduate School of Medicine
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Takata Kuniaki
Department of Anatomy and Cell Biology, Gunma University Graduate School of Medicine
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