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Cell polarity refers to spatial differences in shape, structure, and function within a cell. Almost all cell types exhibit some form of polarity, which enables them to carry out specialized functions. Classical examples of polarized cells are described below, including epithelial cells with apical-basal polarity, neurons in which signals propagate in one direction from dendrites to axons, and migrating cells. Furthermore, cell polarity is important during many types of asymmetric cell division to set up functional asymmetries between daughter cells.

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  • Zellpolarität (de)
  • Cell polarity (en)
  • 細胞極性 (ja)
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  • Als Zellpolarität bezeichnet man in der Biologie eine polare Morphologie einer Zelle, also eine spezifische Ausrichtung von Zellstrukturen. Zellpolarität spielt eine fundamentale Rolle in verschiedenen zellulären Prozessen, wie zum Beispiel in Zellmigration, asymmetrischer Zellteilung und Homöostase von Geweben. Entsprechend können viele unterschiedliche Zellarten Polarität aufweisen, z. B. Epithelzellen, Neuronen und Eizellen. (de)
  • 細胞極性(さいぼうきょくせい、英語:cell polarity)とは、細胞がもつ空間的な極性の総称である。細胞膜や細胞内の成分は、細胞内に均一に分布しているわけではなく、ある偏りをもって存在しており、これらによって極性が生じる。 極性は細胞の空間的な制御において重要な役割をもつ。例えば上皮細胞やニューロンなどは厳密な極性を持っており、これは細胞が正常に働くために必須の性質である。また、球状のリンパ球、あるいは不規則に見えるでも、移動や活性化の際には細胞の形が変化し、細胞内成分および細胞膜成分の再配置を伴う変化を起こし、極性を持つようになる。複数の細胞から構成された多細胞生物だけでなく、単一の細胞からなる単細胞生物や卵においても見られる。 (ja)
  • Cell polarity refers to spatial differences in shape, structure, and function within a cell. Almost all cell types exhibit some form of polarity, which enables them to carry out specialized functions. Classical examples of polarized cells are described below, including epithelial cells with apical-basal polarity, neurons in which signals propagate in one direction from dendrites to axons, and migrating cells. Furthermore, cell polarity is important during many types of asymmetric cell division to set up functional asymmetries between daughter cells. (en)
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  • Als Zellpolarität bezeichnet man in der Biologie eine polare Morphologie einer Zelle, also eine spezifische Ausrichtung von Zellstrukturen. Zellpolarität spielt eine fundamentale Rolle in verschiedenen zellulären Prozessen, wie zum Beispiel in Zellmigration, asymmetrischer Zellteilung und Homöostase von Geweben. Entsprechend können viele unterschiedliche Zellarten Polarität aufweisen, z. B. Epithelzellen, Neuronen und Eizellen. (de)
  • Cell polarity refers to spatial differences in shape, structure, and function within a cell. Almost all cell types exhibit some form of polarity, which enables them to carry out specialized functions. Classical examples of polarized cells are described below, including epithelial cells with apical-basal polarity, neurons in which signals propagate in one direction from dendrites to axons, and migrating cells. Furthermore, cell polarity is important during many types of asymmetric cell division to set up functional asymmetries between daughter cells. Many of the key molecular players implicated in cell polarity are well conserved. For example, in metazoan cells, the PAR-3/PAR-6/aPKC complex plays a fundamental role in cell polarity. While the biochemical details may vary, some of the core principles such as negative and/or positive feedback between different molecules are common and essential to many known polarity systems. (en)
  • 細胞極性(さいぼうきょくせい、英語:cell polarity)とは、細胞がもつ空間的な極性の総称である。細胞膜や細胞内の成分は、細胞内に均一に分布しているわけではなく、ある偏りをもって存在しており、これらによって極性が生じる。 極性は細胞の空間的な制御において重要な役割をもつ。例えば上皮細胞やニューロンなどは厳密な極性を持っており、これは細胞が正常に働くために必須の性質である。また、球状のリンパ球、あるいは不規則に見えるでも、移動や活性化の際には細胞の形が変化し、細胞内成分および細胞膜成分の再配置を伴う変化を起こし、極性を持つようになる。複数の細胞から構成された多細胞生物だけでなく、単一の細胞からなる単細胞生物や卵においても見られる。 (ja)
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