関連する実験動画
Updated: Jul 6, 2026

17:23
Chick ex ovo Culture and ex ovo CAM Assay: How it Really Works
Published on: November 30, 2009
まとめ
チキンレンズと肝臓細胞は,それぞれA-CAMとL-CAMの細胞粘着分子を用いて,アデレンス・ジャンクションを形成する. これらの分子は異性的に相互作用し,共培養細胞で混合結節を形成し,機能的同質性を示唆しています.
科学分野:
- 細胞生物学 細胞生物学
- 発達生物学 発達生物学について
- 分子生物学は分子生物学である.
背景:
- 皮質細胞は,接合点が付着するシートを形成します.
- レンズ細胞は,その結合にA-CAM (アデレンス・セル・アデシオン分子) を利用する.
- 肝細胞は,L-CAM (L-CAM) (肝細胞粘着分子) をその結合に利用する.
研究 の 目的:
- 異型交差点におけるA-CAMとL-CAMの分子相互作用を調査する.
- A-CAMとL-CAMが異なる細胞タイプ間の混合結合を形成できるかどうかを判断する.
- A-CAMとL-CAMの機能的同質性を探求する.
主な方法:
- 鶏肉のレンズと肝臓細胞の共同培養.
- エピテリウムシートとアデレンス接点の形成.
- A-CAMとL-CAMのダブル免疫光ラベリング.
- アンチ-A-CAMおよびアンチ-L-CAM抗体を用いた抑制研究.
主要な成果:
- 共同培養されたレンズと肝臓細胞は混合 (異型) のアデレンス接点を形成した.
- これらの混合結合にはA-CAMとL-CAMの両方が含まれており,それぞれの分子はパートナー細胞に存在しています.
- Anti-A-CAMとanti-L-CAMの抗体は,異型結合の形成を阻害した.
結論:
- A-CAMとL-CAMは,重要な機能的ホモロジーを示しています.
- これらの細胞粘着分子は,異性同士の相互作用に関与しています.
- ヘテロフィルの相互作用は,分子および細胞的に非対称なアデレンス型結合を確立する.
関連する概念動画
Anchoring Junctions
Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
Structure of Cadherins
The cadherins were one of the first cell adhesion molecules discovered; the term “cadherins” is based on their calcium-dependent adhering properties. The first cadherins discovered on the epithelial, neuronal, and placental cells were named E-cadherin, P-cadherin, and N-cadherin, respectively. These classical cadherins share sequence and structural similarities. Other cadherins, including those involved in cell signaling, are grouped into non-classical cadherins. This diversity of cadherins...
Adherens Junctions
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
The endothelial cells...
Adherens Junctions are Dynamic
The endothelial cells...
Cell Adhesion Molecules - Types and Functions
Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily involved in a...
CAM Families
The Integrin family of proteins is primarily involved in a...
Immunoglobulin-like Cell Adhesion Molecules
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Cell Adhesion Molecules - Types and Functions
Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily involved in a...
CAM Families
The Integrin family of proteins is primarily involved in a...

