18-07-2019 дата публикации
Номер: US20190216910A1
Принадлежит:
The provided herein are methods and compositions for eliciting an immune response to an antigen, such as cancer and microbial antigens. 1. A device comprising:(a) a delivery vehicle comprising a scaffold composition, and(b) (i) polyethylenimine (PEI); (ii) free PEI; (iii) PEI and an antigen; or (iv) PEI attached to an antigen.2. The device of claim 1 , comprising PEI and an antigen or PEI attached to an antigen claim 1 , wherein said antigen comprises a tumor antigen or a non-tumor antigen.3. The device of claim 2 , wherein said PEI is attached to said antigen via an electrostatic interaction or a covalent bond.4. (canceled)5. The device of claim 1 , wherein(i) said PEI is branched or linear;(ii) the device comprises both branched PEI and linear PEI;(iii) said PEI comprises branched dendrimeric PEI;(iv) said PEI comprises at least about 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, or 30 primary, secondary, and/or tertiary amino groups;(v) said PEI comprises a molecular weight of (a) at least about 1, 2, 3, 4, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 100, 125, 150, 175, or 200 kilodaltons (kDa); (b) less than about 200, 175, 150, 125, 100, 75, 70, 65, 60, 55, 50, 45, 35, 25, 20, 15, 10, 5, 4, 3, 2, or 1 kDa; or (c) about 1, 2, 3, 4, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 1-10, 2-25, 25-60, 25-75, 50-100, or 100-200 kDa; and/or(vi) said PEI comprises linear PEI having a molecular weight of about 25 kDa or branched PEI having a molecular weight of about 60 kDa.610-. (canceled)11. The device of claim 1 , wherein said delivery vehicle comprises a volume of at least about 0.1 claim 1 , 0.5 claim 1 , 1 claim 1 , 10 claim 1 , 20 claim 1 , 30 claim 1 , 40 claim 1 , 50 claim 1 , 60 claim 1 , 70 claim 1 , 80 claim 1 , 90 claim 1 , or 100 mm.12. The device of claim 1 , wherein said scaffold composition (i) comprises open interconnected macropores; (ii) is a pore-forming scaffold composition claim 1 , (iii) comprises a hydrogel or a cryogel; (iv) is anionic or ...
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