Modulation of mouse macrophage polarization in vitro using IL-4 delivery by osmotic pumps.

Modulation of mouse macrophage polarization in vitro using IL-4 delivery by osmotic pumps.
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DOI:
10.1002/jbm.a.35278
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发表时间:
2015-04
影响因子:
4.9
通讯作者:
Goodman, Stuart B.
Goodman, Stuart B.
中科院分区:
工程技术3区
文献类型:
--
作者:
Pajarinen, Jukka;Tamaki, Yasunobu;Antonios, Joseph K.;Lin, Tzu-Hua;Sato, Taishi;Yao, Zhenyu;Takagi, Michiaki;Konttinen, Yrjo T.;Goodman, Stuart B.

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Modulation of macrophage polarization is emerging as promising means to mitigate wear particle-induced inflammation and periprosthetic osteolysis. As a model for continuous local drug delivery, we used miniature osmotic pumps to deliver IL-4 in order to modulate macrophage polarization in vitro from non-activated M0 and inflammatory M1 phenotypes towards a tissue regenerative M2 phenotype. Pumps delivered IL-4 into vials containing mouse bone marrow macrophage (mBMM) media. This conditioned media (CM) was collected at seven day intervals up to four weeks (week 1 to week 4 samples). IL-4 concentration in the CM was determined by ELISA and its biological activity was assayed by exposing M0 and M1 mBMMs to week 1 or week 4 CM. The IL-4 concentration in the CM approximated the mathematically calculated amount, and its biological activity was well retained, as both M0 and M1 macrophages exposed to either the week 1 or week 4 CM assumed M2-like phenotype as determined by qRT-PCR, ELISA and immunocytochemistry. The results show that IL-4 can be delivered using osmotic pumps and that IL-4 delivered can modulate macrophage phenotype. Results build a foundation for in vivo studies using our previously validated animal models and provide possible strategies to locally mitigate wear particle-induced macrophage activation and periprosthetic osteolysis.
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