Related Experiment Video
Updated: Aug 3, 2026
06:08
Preparation and Immunofluorescence Staining of Bundles and Single Fiber Cells from the Cortex and Nucleus of the Eye Lens
Published on: June 9, 2023
Ocular lens gap junctions: protein expression, assembly, and structure-function analysis
J Kistler1, C Evans, P Donaldson
1Department of Biochemistry and Molecular Biology, School of Biological Sciences, University of Auckland, New Zealand.
Microscopy Research and Technique
|August 1, 1995
Summary
Researchers reviewed lens fiber gap junction formation, including embryonic development and adult changes. An in vitro system and electrophysiology provided insights into molecular interactions and channel properties.
Area of Science:
- Ophthalmology and Cell Biology
- Focuses on the eye's lens and cellular communication.
Background:
- Lens fiber gap junctions are crucial for vision.
- Understanding their formation is key to addressing lens disorders.
Purpose of the Study:
- To review recent advances in lens fiber gap junction formation.
- To explore molecular interactions and electrical properties.
Main Methods:
- Studied junctional protein expression in embryonic and adult lenses.
- Developed an in vitro assembly system for pore complexes.
- Utilized electrophysiological techniques like planar lipid bilayers and patch clamping.
Main Results:
- Characterized age-related changes in adult lens gap junctions.
- Gained insights into molecular interactions during gap junction assembly.
- Determined electrical properties of lens gap junction channels.
Conclusions:
- Advances in understanding lens fiber gap junction formation are significant.
- In vitro systems and electrophysiology are powerful tools for analysis.
Related Concept Videos
01:37Gap Junctions
Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
01:05Mechanism of Ciliary Motion
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
01:29Tight 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...
01:27Gap Junctions
The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
01:05Mechanism of Ciliary Motion
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
01:17Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...