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Related Experiment Video

Updated: Jun 4, 2026

Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles (PPAs) and Related Biomaterials

Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles (PPAs) and Related Biomaterials

Published on: June 25, 2018

Heparan sulfate proteoglycan-mediated polyamine uptake.

Johanna Welch¹, Katrin Svensson, Paulina Kucharzewska

¹Department of Clinical Sciences, Section of Oncology, Lund University and Lund University Hospital, Lund, Sweden.

Methods in Molecular Biology (Clifton, N.J.)

|February 15, 2011

Summary

Polyamines are vital for cell growth and are taken up by cells via heparan sulfate proteoglycans (HSPGs). This study details methods to investigate HSPG-mediated polyamine uptake and HSPG deficiency models.

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Characterization of Membrane Transporters by Heterologous Expression in E. coli and Production of Membrane Vesicles

Characterization of Membrane Transporters by Heterologous Expression in E. coli and Production of Membrane Vesicles

Published on: December 31, 2019

Area of Science:

Cell Biology
Biochemistry
Molecular Biology

Background:

Polyamines are essential polycationic compounds for cellular proliferation and transformation.
Cellular polyamine uptake mechanisms are not fully understood, but depend on cell surface heparan sulfate proteoglycans (HSPGs).

Purpose of the Study:

To provide detailed protocols for studying polyamine uptake mediated by HSPGs.
To describe methods for creating and utilizing genetic models of HSPG deficiency.
To offer a comprehensive guide for measuring polyamine uptake and verifying HSPG reduction.

Main Methods:

Enzymatic reduction of cell surface HSPGs using Heparinase III lyase.
Blocking cell surface HSPGs with phage display-derived single chain variable fragment (scFv) anti-HS antibodies.
Utilizing two distinct genetic models of HSPG deficiency.

Main Results:

Established protocols for studying HSPG-mediated polyamine uptake in various cell lines.
Demonstrated the effectiveness of enzymatic and antibody-based methods for HSPG reduction.
Provided a quantitative method for verifying HSPG loss and measuring polyamine uptake.

Conclusions:

Heparan sulfate proteoglycans (HSPGs) play a crucial role in cellular polyamine uptake.
The provided protocols and models facilitate the investigation of HSPG-polyamine interactions.
This work offers valuable tools for understanding polyamine transport and its regulation.