2017
DOI: 10.1021/acsami.7b03905
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Peptide-Functionalized Nanomaterials for the Efficient Isolation of HER2-Positive Circulating Tumor Cells

Abstract: The detection of circulating tumor cells (CTCs) with a specific antigen expression is necessary in therapeutic response monitoring and targeted therapy guidance. The existence of human epidermal growth factor receptor 2 (HER2) and the concentration of HER2-positive CTCs are strong indicators for patient diagnosis, prognosis, and therapeutic monitoring. Herein we report the direct isolation of HER2-positive CTCs by peptide-functionalized nanomaterials. We designed and screened out a peptide as an HER2 antibody … Show more

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Cited by 46 publications
(38 citation statements)
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“…For example, improvements have been made on the probe that is functionalized on the MNPs, as was reported by Bai et al and Peng et al who modified the MNPs with de novo designed peptides that had high affinity to the marker membrane proteins on CTCs (e.g., EpCAM and HER2) ( Figure a) . The peptide‐functionalized MNPs exhibited high capture efficiency for the CTCs in breast, prostate, and liver cancers, reaching a capture rate of above 90% for CTCs or 68% for HER2 positive CTCs, much higher than the one with antibody‐functionalized MNPs showing the potential of high affinity peptides as probes for improving the detection sensitivity. Slow magnetic response and high loss rate have been the problems for MNPs due to the small size of the nanoparticles.…”
Section: Advances and Challenges Of Nanotechnology‐based Liquid Biopsymentioning
confidence: 97%
See 2 more Smart Citations
“…For example, improvements have been made on the probe that is functionalized on the MNPs, as was reported by Bai et al and Peng et al who modified the MNPs with de novo designed peptides that had high affinity to the marker membrane proteins on CTCs (e.g., EpCAM and HER2) ( Figure a) . The peptide‐functionalized MNPs exhibited high capture efficiency for the CTCs in breast, prostate, and liver cancers, reaching a capture rate of above 90% for CTCs or 68% for HER2 positive CTCs, much higher than the one with antibody‐functionalized MNPs showing the potential of high affinity peptides as probes for improving the detection sensitivity. Slow magnetic response and high loss rate have been the problems for MNPs due to the small size of the nanoparticles.…”
Section: Advances and Challenges Of Nanotechnology‐based Liquid Biopsymentioning
confidence: 97%
“…Most liquid biopsy strategies include the enrichment of targets from the body fluids such as the peripheral blood and the subsequent characterization and analysis of the isolated targets. Current isolation and enrichment of CTCs and EVs are mainly based on two approaches: the separation of CTCs and EVs based on their characteristic physical properties (e.g., size, deformability, and adhesion) and the immunoaffinity‐based enrichment, usually in virtue of molecular probes such as antibodies, peptides, and aptamers …”
Section: Advances and Challenges Of Nanotechnology‐based Liquid Biopsymentioning
confidence: 99%
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“…In addition, SPNs have been developed into smart anticancer materials through the introduction of activatable linkers that can be cleaved only in the tumor microenvironment or upon light irradiation . Tamoxifen (Tam) is a non‐steroidal triphenylethylene derivative and was the first selective estrogen receptor modulator whereas Herceptin targets HER2 for the treatment of breast cancer . Vivek and co‐workers developed HER2‐targeting poly(vinylpyrrolidone) (PVP)–poly( d , l ‐lactic‐ co ‐glycolic acid) (PLGA) nanoparticular drug delivery system, with the combination of Tam (targeting agent) and Herceptin (enhances the cytoplasmic delivery of post‐endocytosed nanoparticles loaded with Tam) enhancing the therapeutic efficacy toward HER2‐positive metastatic breast cancer cells.…”
Section: Antibody‐conjugated Nanomaterialsmentioning
confidence: 99%
“…Recognition peptides are other linkers also acknowledged as adequate antibody substitutes for CTCs capture. This is due to their application simplicity and employment in ligand-receptor and protein–protein interactions [129].…”
Section: Circulating Tumor Cellsmentioning
confidence: 99%