Nano-sized drug-loaded micelles deliver payload to lymph node immune cells and prolong allograft survival

Karen Y. Dane, Chiara Nembrini, Alice Tomei, Jackson K. Eby, Conlin P. O'Neil, Diana Velluto, Melody A. Swartz, Luca A Inverardi, Jeffrey A. Hubbell

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

By delivering immunomodulatory drugs in vivo directly to lymph nodes draining an injection site, an opportunity exists to increase drug bioavailability to local immune cells. Importantly, particles smaller than 100 nm are efficiently transported through lymphatic vessels to draining lymph nodes. To investigate whether this approach could be used for local delivery of immunomodulatory drugs, amphiphilic poly(ethylene glycol)-bl-poly(propylene sulfide) (PEG-bl-PPS) block copolymers forming 50 nm micelles were used to encapsulate hydrophobic drugs. Micelle drainage was determined using fluorescent micelles and showed effective targeting of multiple immune cell subsets in lymph nodes. For functional studies of our formulations, two approaches were considered. To evaluate the efficacy of anti-inflammatory drug delivery, dendritic cell activation was shown to be prevented when mice were pretreated with micelles loaded with the glucocorticoid mometasone and then challenged with the TLR9 ligand, CpG. To evaluate whether immunosuppressive drug-loaded micelles were effective in prolonging MHC-mismatched allograft survival, BALB/c mice were treated for 14 consecutive days with drug-loaded micelles following transplantation of allogenic C57BL/6 tail skin. Micelles loaded with a mixture of rapamycin and tacrolimus prolonged allograft survival by 2-fold. Our results indicate that the drug-loaded micelle approach effectively targets the draining lymph nodes and exhibits proper immune regulation.

Original languageEnglish
Pages (from-to)154-160
Number of pages7
JournalJournal of Controlled Release
Volume156
Issue number2
DOIs
StatePublished - Dec 10 2011

Fingerprint

Micelles
Allografts
Lymph Nodes
Pharmaceutical Preparations
Mometasone Furoate
Lymphatic Vessels
Homologous Transplantation
Tacrolimus
Sirolimus
Immunosuppressive Agents
Dendritic Cells
Glucocorticoids
Biological Availability
Tail
Drainage
Anti-Inflammatory Agents
Ligands
Skin
Injections

Keywords

  • Allotransplantation
  • Delivery vehicle
  • Lymphatic drainage
  • Micelles
  • Skin graft

ASJC Scopus subject areas

  • Pharmaceutical Science

Cite this

Nano-sized drug-loaded micelles deliver payload to lymph node immune cells and prolong allograft survival. / Dane, Karen Y.; Nembrini, Chiara; Tomei, Alice; Eby, Jackson K.; O'Neil, Conlin P.; Velluto, Diana; Swartz, Melody A.; Inverardi, Luca A; Hubbell, Jeffrey A.

In: Journal of Controlled Release, Vol. 156, No. 2, 10.12.2011, p. 154-160.

Research output: Contribution to journalArticle

Dane, KY, Nembrini, C, Tomei, A, Eby, JK, O'Neil, CP, Velluto, D, Swartz, MA, Inverardi, LA & Hubbell, JA 2011, 'Nano-sized drug-loaded micelles deliver payload to lymph node immune cells and prolong allograft survival', Journal of Controlled Release, vol. 156, no. 2, pp. 154-160. https://doi.org/10.1016/j.jconrel.2011.08.009
Dane, Karen Y. ; Nembrini, Chiara ; Tomei, Alice ; Eby, Jackson K. ; O'Neil, Conlin P. ; Velluto, Diana ; Swartz, Melody A. ; Inverardi, Luca A ; Hubbell, Jeffrey A. / Nano-sized drug-loaded micelles deliver payload to lymph node immune cells and prolong allograft survival. In: Journal of Controlled Release. 2011 ; Vol. 156, No. 2. pp. 154-160.
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