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Updated: Jun 15, 2026
08:51
Profiling of Permethylated Mucin O-glycans Using Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry
Published on: June 20, 2025
Membrane-tethered mucins have multiple functions on the ocular surface.
Bharathi Govindarajan1, Ilene K Gipson
1Schepens Eye Research Institute, Department of Ophthalmology, Harvard Medical School, 20 Staniford Street, Boston, MA 02114, USA.
Experimental Eye Research
|March 13, 2010
Summary
Membrane mucins like MUC1, MUC4, and MUC16 are crucial for ocular surface health, offering lubrication and hydration. These multifunctional glycoproteins play vital roles in maintaining eye surface integrity and function.
Area of Science:
- Ophthalmology
- Biochemistry
- Glycobiology
Background:
- Membrane-tethered mucins are key glycoproteins in the ocular surface glycocalyx.
- Initially recognized for lubrication and hydration, mucins are now understood to be multifunctional.
Purpose of the Study:
- To review current knowledge on the three major ocular surface membrane mucins: MUC1, MUC4, and MUC16.
- To highlight their varied distribution, structure, and functions on the eye surface.
Main Methods:
- Review of existing literature on ocular surface mucins.
- Description of animal and in vitro models used to study these mucins.
- Examination of mucin alterations in ocular surface disease.
Main Results:
- Ocular membrane mucins (MUC1, MUC4, MUC16) exhibit distinct characteristics and roles.
- Their ectodomains are released into the tear film, contributing to soluble mucin content.
- These mucins are implicated in various ocular surface diseases.
Conclusions:
- Ocular surface membrane mucins are complex, multifunctional molecules essential for eye health.
- Understanding their specific roles and alterations is critical for diagnosing and treating ocular surface conditions.
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