Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers.
The ability to target therapeutic agents to specific tissues is an important element in the development of new disease treatments. The transferrin receptor (TfR) is one potential target for drug delivery, as it expressed on many dividing cells and on brain endothelium, the key cellular component of...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2021-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0252341 |
| _version_ | 1819102162371739648 |
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| author | Conor McQuaid Andrea Halsey Maëva Dubois Ignacio Romero David Male |
| author_facet | Conor McQuaid Andrea Halsey Maëva Dubois Ignacio Romero David Male |
| author_sort | Conor McQuaid |
| collection | DOAJ |
| description | The ability to target therapeutic agents to specific tissues is an important element in the development of new disease treatments. The transferrin receptor (TfR) is one potential target for drug delivery, as it expressed on many dividing cells and on brain endothelium, the key cellular component of the blood-brain barrier. The aim of this study was to compare a set of new and previously-described polypeptides for their ability to bind to brain endothelium, and investigate their potential for targeting therapeutic agents to the CNS. Six polypeptides were ranked for their rate of endocytosis by the human brain endothelial cell line hCMEC/D3 and the murine line bEnd.3. One linear polypeptide and two cyclic polypeptides showed high rates of uptake. These peptides were investigated to determine whether serum components, including transferrin itself affected uptake by the endothelium. One of the cyclic peptides was strongly inhibited by transferrin and the other cyclic peptide weakly inhibited. As proof of principle the linear peptide was attached to 2nm glucose coated gold-nanoparticles, and the rate of uptake of the nanoparticles measured in a hydrogel model of the blood-brain barrier. Attachment of the TfR-targeting polypeptide significantly increased the rates of endocytosis by brain endothelium and increased movement of nanoparticles across the cells. |
| first_indexed | 2024-12-22T01:30:11Z |
| format | Article |
| id | doaj.art-3f44ca1c0c7b4826b97f016485872453 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-22T01:30:11Z |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-3f44ca1c0c7b4826b97f0164858724532022-12-21T18:43:30ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01166e025234110.1371/journal.pone.0252341Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers.Conor McQuaidAndrea HalseyMaëva DuboisIgnacio RomeroDavid MaleThe ability to target therapeutic agents to specific tissues is an important element in the development of new disease treatments. The transferrin receptor (TfR) is one potential target for drug delivery, as it expressed on many dividing cells and on brain endothelium, the key cellular component of the blood-brain barrier. The aim of this study was to compare a set of new and previously-described polypeptides for their ability to bind to brain endothelium, and investigate their potential for targeting therapeutic agents to the CNS. Six polypeptides were ranked for their rate of endocytosis by the human brain endothelial cell line hCMEC/D3 and the murine line bEnd.3. One linear polypeptide and two cyclic polypeptides showed high rates of uptake. These peptides were investigated to determine whether serum components, including transferrin itself affected uptake by the endothelium. One of the cyclic peptides was strongly inhibited by transferrin and the other cyclic peptide weakly inhibited. As proof of principle the linear peptide was attached to 2nm glucose coated gold-nanoparticles, and the rate of uptake of the nanoparticles measured in a hydrogel model of the blood-brain barrier. Attachment of the TfR-targeting polypeptide significantly increased the rates of endocytosis by brain endothelium and increased movement of nanoparticles across the cells.https://doi.org/10.1371/journal.pone.0252341 |
| spellingShingle | Conor McQuaid Andrea Halsey Maëva Dubois Ignacio Romero David Male Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. PLoS ONE |
| title | Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. |
| title_full | Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. |
| title_fullStr | Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. |
| title_full_unstemmed | Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. |
| title_short | Comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers. |
| title_sort | comparison of polypeptides that bind the transferrin receptor for targeting gold nanocarriers |
| url | https://doi.org/10.1371/journal.pone.0252341 |
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