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The many ways to cleave hyaluronan.

Robert Stern¹, Grigorij Kogan, Mark J Jedrzejas

¹Department of Pathology, School of Medicine, UCSF Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94143-0511, USA.

Biotechnology Advances

|August 25, 2007

Summary

Hyaluronan chain length is crucial for bioengineering applications. This review details enzymatic, free radical, and chemical reactions that can alter hyaluronan polymer size during preparation.

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Area of Science:

Biomaterials science
Polymer chemistry
Tissue engineering

Background:

Hyaluronan (HA) is increasingly utilized in artificial matrices and tissue scaffolding.
The biological functions of HA are highly dependent on its polymer chain length.
HA polymer chain length is recognized as informational, influencing size-specific functions.

Purpose of the Study:

To review the various reactions that cause scission of hyaluronan polymers.
To highlight the significance of hyaluronan size in bioengineering.
To discuss both inadvertent and desirable modifications of hyaluronan chain length.

Main Methods:

Literature review of enzymatic degradation pathways of hyaluronan.
Analysis of free radical-mediated hyaluronan scission mechanisms.
Examination of chemical methods affecting hyaluronan polymer integrity.

Main Results:

Hyaluronan scission can occur through enzymatic, free radical, and chemical processes.
These processes can lead to both unintended degradation and controlled fragmentation of hyaluronan.
Specific hyaluronan fragments can impart desirable properties to bioengineered constructs.

Conclusions:

Understanding hyaluronan scission mechanisms is critical for controlling its properties in bioengineering.
Precise control over hyaluronan size is essential for optimizing tissue scaffolding and artificial matrices.
Further research into size-specific hyaluronan fragments can advance tissue engineering applications.