まとめ
研究者らは,単一クローン抗体を用いて,上皮細胞粘着に不可欠な新しい細胞表面タンパク質を特定した. この発見は,上皮組織における細胞-細胞接触調節の理解を前進させる.
科学分野:
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
- バイオケミストリー バイオケミストリー
背景:
- 細胞同士の結合は,組織構造と機能を維持するために不可欠です.
- 細胞結合の分子メカニズムの理解は,様々な生物学的プロセスや疾患において極めて重要です.
研究 の 目的:
- Madin-Darby canine kidney (MDCK) の上皮細胞の特定の細胞と細胞の接触に関与する新しい分子を特定する.
- モノクローナル抗体を使用して,新たに特定された細胞表面抗原の機能と特性を特徴付ける.
主な方法:
- 細胞と細胞の接触を妨害する機能的測定を用いた単一クローン抗体 (anti-Arc-1) の選択.
- 放射性同位体ラベリング,免疫スキャニング電子顕微鏡,EDTA抽出,ウエスタン・ブロッティング,ゲル濾過を用いた抗原の特徴化.
主要な成果:
- アーク"抗体の抗体は,緊密な結節を壊し,MDCK細胞を分離し,細胞の極性を取り除きました.
- 抗原は,MDCK細胞の細胞表面タンパク質で,表面分布が均質で,EDTAで抽出可能である.
- 抗原性は,ウエスタン・ブロットで130kDaと40kDaで,ゲルフィルタレーションによって観察されました.
結論:
- 機能性スクリーニングと組み合わせたハイブリドオマテクニックは,細胞-細胞結合における新しい分子を特定するのに有効です.
- 特定された抗原は,上皮細胞の完全性と極性を維持する上で重要な役割を果たします.
さらに関連する動画
12:15The C. elegans Intestine As a Model for Intercellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis at the Single-cell Level: Labeling by Antibody Staining, RNAi Loss-of-function Analy
Published on: October 3, 2017
12.7K
07:49Culture Methods to Study Apical-Specific Interactions using Intestinal Organoid Models
Published on: March 23, 2021
12.7K
関連する概念動画
Cell Motility through Blebbing
1.9K
Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
Blebbing Through the Matrix
In multicellular...
1.9K
Cell Polarization by Rho Proteins
3.2K
Cell polarity is the asymmetric distribution of cellular and membrane components, making one side of the cell different from the other. This polarity is essential to many processes such as embryogenesis, axon migration, glucose transport across epithelial cells, and directional cell migration. A migrating cell responds to intracellular or extracellular signals via molecular cascades that reorganize the actin cytoskeleton to establish this polarity. In these cells, the Rho family proteins Cdc42,...
3.2K
Mechanisms of Membrane Domain Formation
3.2K
Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with...
Another mechanism for membrane domain formation involves membrane proteins interacting with...
3.2K
Cadherins in Tissue Organization
3.5K
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
3.5K
