Cited by 71Nanoparticle-Based Drug DeliveryChemical Synthesis and AnalysisRNA Interference and Gene Delivery

Reduction of Circulating Cancer Cells and Metastases in Breast-Cancer Models by a Potent EphA2-Agonistic Peptide–Drug Conjugate

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Salem, Ahmed F., Wang, Si, Billet, Sandrine, Chen, Jie-Fu, Udompholkul, Parima, Gambini, Luca, Baggio, Carlo, Tseng, Hsian-Rong +3 more·2018·Journal of Medicinal Chemistry

Abstract

EphA2 overexpression has been associated with metastasis in multiple cancer types, including melanomas and ovarian, prostate, lung, and breast cancers. We have recently proposed the development of peptide–drug conjugates (PDCs) using agonistic EphA2-targeting agents, such as the YSA peptide or its optimized version, 123B9. Although our studies indicated that YSA– and 123B9–drug conjugates can selectively deliver cytotoxic drugs to cancer cells in vivo, the relatively low cellular agonistic activities (i.e., the high micromolar concentrations required) of the agents toward the EphA2 receptor remained a limiting factor to the further development of these PDCs in the clinic. Here, we report that a dimeric version of 123B9 can induce receptor activation at nanomolar concentrations. Furthermore, we demonstrated that the conjugation of dimeric 123B9 with paclitaxel is very effective at targeting circulating tumor cells and inhibiting lung metastasis in breast-cancer models. These studies represent an important step toward the development of effective EphA2-targeting PDCs.

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Crossref · 10.1021/acs.jmedchem.7b01837

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  • A dimeric 123B9 was able to perform receptor activation at concentrations in the nanomolar range.

    “Furthermore, a dimeric 123B9 was able to perform receptor activation at concentrations in the nanomolar range.”
  • Dimeric 123B9 conjugation with paclitaxel is useful in combating CTCs and preventing lung metastasis in breast cancer models.

    “Additionally, dimeric 123B9 conjugation with paclitaxel is found to be very useful in combating CTCs and preventing the lung metastasis in breast cancer models [168].”

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  1. Wu B.; Wang S.; De S. K.; Barile E.; Quinn B. A.; Zharkikh I.; Purves A.; Stebbins J. L.; Oshima R. G.; Fisher P. B.; Pellecchia M. Design and characterization of novel EphA2 agonists for targeted delivery of chemotherapy to cancer cells. Chem. Biol. 2015, 22, 876– 887. 10.1016/j.chembiol.2015.06.011. 26165155 PMC4515144 · DOI

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Authors
Salem, A. F., Wang, S., Billet, S., Chen, J.-F., Udompholkul, P., Gambini, L., Baggio, C., Tseng, H.-R., Posadas, E. M., Bhowmick, N. A., & Pellecchia, M.
Affiliations
  • University of California, Riverside (US)
  • Sanford Burnham Prebys Medical Discovery Institute (US)
  • Cedars-Sinai Medical Center (US)
  • University of California, Los Angeles (US)
Corresponding author
Pellecchia, Maurizio
Venue
Journal of Medicinal Chemistry
Published
2018-02-22
Volume
61
Issue
5
Pages
2052-2061
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W2789116588
Cited by
68
References
67
Citations by year
2026: 3 · 2025: 5 · 2024: 10 · 2023: 8 · 2022: 10 · 2021: 9 · 2020: 12 · 2019: 5 · 2018: 5
FWCI
2.59
Type
journal article
Language
en
Open access
Locations
  • Journal of Medicinal Chemistry (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (CA149668, CA168517)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
EphA2, peptide-drug conjugates, receptor dimerization, paclitaxel, circulating tumor cells, lung metastasis, breast cancer, receptor activation
MeSH terms
Animals, Antineoplastic Agents, Breast Neoplasms, Humans, Neoplastic Cells, Circulating, Neoplasm Metastasis, Peptides, Drug Delivery Systems, Paclitaxel, Receptor, EphA2, Mice

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