UMMS Affiliation

Program in Molecular Medicine

Publication Date

2018-12

Document Type

Article

Disciplines

Medicinal Chemistry and Pharmaceutics | Nanomedicine | Neoplasms | Therapeutics

Abstract

BACKGROUND: Nanomedicine offers an excellent opportunity to tackle treatment-refractory malignancies by enhancing the delivery of therapeutics to the tumor site. High endothelial venules (HEVs) are found primarily in lymph nodes or formed de novo in peripheral tissues during inflammatory responses. They express peripheral node addressin (PNAd), which is recognized by the monoclonal antibody MECA79.

METHODS: Here, we demonstrated that HEVs form de novo in human pancreatic ductal adenocarcinoma (PDAC). We engineered MECA79 coated nanoparticles (MECA79-NPs) that recognize these ectopic HEVs in PDAC.

FINDINGS: The trafficking of MECA79-NPs following intravenous delivery to human PDAC implanted in a humanized mouse model was more robust than non-conjugated NPs. Treatment with MECA79-Taxol-NPs augmented the delivery of Paclitaxel (Taxol) to the tumor site and significantly reduced the tumor size. This effect was associated with a higher apoptosis rate of PDAC cells and reduced vascularization within the tumor.

INTERPRETATION: Targeting the HEVs of PDAC using MECA79-NPs could lay the ground for the localized delivery of a wide variety of drugs including chemotherapeutic agents. FUND: National Institutes of Health (NIH) grants: T32-EB016652 (B.B.), NIH Cancer Core Grant CA034194 (L.D.S.), National Institute of Allergy and Infectious Diseases grants R01-AI126596 and R01-HL141815 (R.A.).

Keywords

High endothelial venules, MECA79 coated nanoparticles, Pancreatic ductal adenocarcinoma, Peripheral node addressin, Taxol

Rights and Permissions

© 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

DOI of Published Version

10.1016/j.ebiom.2018.11.030

Source

EBioMedicine. 2018 Dec;38:79-88. doi: 10.1016/j.ebiom.2018.11.030. Epub 2018 Nov 27. Link to article on publisher's site

Journal/Book/Conference Title

EBioMedicine

Related Resources

Link to Article in PubMed

PubMed ID

30497977

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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