相关实验视频

Updated: Sep 17, 2025

Functional Assessment of Intestinal Tight Junction Barrier and Ion Permeability in Native Tissue by Ussing Chamber Technique

Functional Assessment of Intestinal Tight Junction Barrier and Ion Permeability in Native Tissue by Ussing Chamber Technique

Published on: May 26, 2021

通过泛克劳丁结合分子对紧密结合屏障调节的生物物理基础

Chinemerem P Ogbu¹, Mason de Las Alas², Alexandria M Mandriota¹

¹Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA.

|June 27, 2025

概括

研究人员开发了一种合成抗体片段 (sFab),该片段可以与多种类型的Claudin亚型结合. 这种泛克劳丁结合剂准紧密的结点,为药物输送和治疗相关疾病提供了潜力.

科学领域:

生物化学生物化学
细胞生物学细胞生物学
分子医学是分子医学.

背景情况:

克劳丁是形成紧密连接的基本膜蛋白,对组织屏障完整性至关重要.
紧密的结节调节了细胞外运输,使得素结合分子对治疗应用具有吸引力.
开发克劳丁结合分子是具有挑战性的,因为它们的物理化学特性和小的可准表面.

研究的目的:

开发和表征一种新型合成抗体片段 (sFab),具有广泛的丁结合能力.
调查这个sFab在调节紧接口透性的潜力.
评估sFab作为基础研究和治疗开发的工具的实用性.

主要方法:

合成抗体片段 (sFab) 的开发.
基于亲和性的结合试验,以确定克劳丁亚型的特异性和亲和性.
将sFab应用于肠表皮模型,以评估其对准细胞屏障的影响.

主要成果:

开发的sFab对10种Claudin亚型和其他相关家族成员表现出纳米分子亲和力.
sFab特别针对克劳丁的细胞外表面,而不是其他紧密结合蛋白.
将sFab应用于肠表皮的模型,成功地打开了细胞壁.

结论:

一种新的泛克劳丁结合合成抗体片段 (sFab) 已经开发出来.
这种sFab有效地准claudins,并调节紧接口的透性.
该sFab显示承诺作为一个多功能工具在体外/体内研究和治疗策略针对紧张结关联疾病的治疗策略.

关键词:

克劳丁·克劳丁 (Claudin Claudin) 是一个法国人.药物输送是药物输送的过程.膜蛋白质是一种膜蛋白质.合成抗体的合成抗体紧密的结节紧密的结节

更多相关视频

Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor

Sensing of Barrier Tissue Disruption with an Organic Electrochemical Transistor

Published on: February 10, 2014

Analysis of Protein-protein Interactions and Co-localization Between Components of Gap, Tight, and Adherens Junctions in Murine Mammary Glands

Analysis of Protein-protein Interactions and Co-localization Between Components of Gap, Tight, and Adherens Junctions in Murine Mammary Glands

Published on: May 30, 2017

相关概念视频

Tight Junctions

Tight Junctions

Tight junctions are molecular seals between cells that prevent the leaking of fluids, ions, and other small solutes across cavities and compartments in multicellular organisms. They are mainly composed of claudin and occludin transmembrane proteins, and other proteins such as tricellulin and JAM (junctional adhesion molecule). All these proteins are 4-pass transmembrane proteins, except JAM, which is a single-pass transmembrane protein belonging to the immunoglobulin superfamily. The...

Overview of Cell-Cell Junctions

Overview of Cell-Cell Junctions

The complex three-dimensional arrangement of cells in any multicellular organism is defined and maintained by interactions of cells with each other and the extracellular matrix. Cell-cell junctions are specialized structures where the multi-protein complexes on one cell interact with the multi-protein complexes on another cell. These cell junctions are classified into three main types based on their function — occluding, anchoring, and gap junctions.
Occluding or Tight...

Tension Response at Adherens Junctions

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...

Cell-matrix's Response to Mechanical Forces

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...

Adherens Junctions

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

Anchoring Junctions

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:...