Subcutaneous nanotherapy repurposes the immunosuppressive mechanism of rapamycin to enhance allogeneic islet graft viability.
Subcutaneous nanotherapy repurposes the immunosuppressive mechanism of rapamycin to enhance allogeneic islet graft viability.
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DOI:
10.1038/s41565-021-01048-2
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发表时间:
2022-03
影响因子:
38.3
通讯作者:
Scott EA
中科院分区:
文献类型:
--
作者:
Burke JA;Zhang X;Bobbala S;Frey MA;Bohorquez Fuentes C;Freire Haddad H;Allen SD;Richardson RAK;Ameer GA;Scott EA
Standard oral rapamycin (i.e. Rapamune®) administration is plagued by poor bioavailability and broad biodistribution. Thus, this pleotropic mTOR inhibitor has a narrow therapeutic window, numerous side effects and provides inadequate protection to transplanted cells and tissues. Furthermore, the hydrophobicity of rapamycin limits its use in parenteral formulations. Here, we demonstrate that subcutaneous delivery via poly(ethylene glycol)-b-poly(propylene sulfide)(PEG-b-PPS) polymersome (PS) nanocarriers significantly alters rapamycin’s cellular biodistribution to repurpose its mechanism of action for tolerance instead of immunosuppression while minimizing side effects. While oral rapamycin inhibits naïve T cell proliferation directly, subcutaneously administered rapamycin-loaded polymersomes (rPS) modulate antigen presenting cells in lieu of T cells significantly improving maintenance of normoglycemia in a clinically relevant, MHC-mismatched, allogeneic, intraportal (liver) islet transplantation model. These results demonstrate the ability of a rationally designed nanocarrier to re-engineer the immunosuppressive mechanism of a drug by controlling cellular biodistribution.
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影响因子:
5.2
作者:
Burrack AL;Martinov T;Fife BT
通讯作者:
Fife BT
影响因子:
3.5
作者:
Emoto, C;Fukuda, T;Cox, S;Christians, U;Vinks, A A
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Vinks, A A
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Snyder-Cappione, Jennifer E.
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6.7
作者:
Ferron, GM;Mishina, EV;Jusko, WJ
通讯作者:
Jusko, WJ