申请人:Austyn Jonathan M.
公开号:US20130064795A1
公开(公告)日:2013-03-14
The invention provides a layered double hydroxide compound for use in modulating an immune response to an antigen, and an immune modulator composition comprising the layered double hydroxide and an antigen. The compound is of formula (I), (II), or (III)
[M
I
M
III
2
(OH)
6
]
+[A
n−
1/n
] (I)
[M
II
(1−x)
M
III
x
(OH)
2
]
x+
[A
n−
x/n
] (II)
[M
II
M
III
4
(OH)
12
][A
n−
2/n
] (III)
in which M
I
is Li
+
, M
II
is a divalent metal cation or a mixture of two or more divalent metal cations, M
III
is a trivalent metal cation or a mixture of two or more trivalent metal cations, or a mixture of one or more trivalent metal cation with one or more quadravalent metal cation, x is from ⅕ to ⅓, and A is an interlayer anion having a charge n, wherein optionally some or all of the interlayer anion A may be replaced by one or biologically active agent and/or one or more antigen, and wherein A is selected from conjugate bases of acids having a pKa of 1 or higher, except for in LDHs of formula (II) when M
II
comprises Ca
2+
and in LDHs of formula (I), wherein A is selected from conjugate bases of acids having a pKa of −4 or higher.
本发明提供一种分层双氢氧化物化合物,用于调节对抗原的免疫反应,并提供包括该分层双氢氧化物和抗原的免疫调节剂组合物。该化合物的化学式为(I)、(II)或(III)[MIMIII2(OH)6]+[An−1/n] (I)[MII(1−x)MIIIx(OH)2]x+[An−x/n] (II)[MIIMIII4(OH)12][An−2/n] (III),其中MI为Li+,MII为二价金属阳离子或两种或两种以上二价金属阳离子的混合物,MIII为三价金属阳离子或两种或两种以上三价金属阳离子的混合物,或一种或多种三价金属阳离子与一种或多种四价金属阳离子的混合物,x在1/5到1/3之间,A为带有电荷n的层间阴离子,其中可选择将一些或全部层间阴离子A替换为一种或多种生物活性剂和/或一种或多种抗原,A选自具有pKa大于1的酸的共轭碱基,但在化学式(II)的LDH中,当MII包括Ca2+时,在化学式(I)的LDH中,A选自具有pKa大于-4的酸的共轭碱基。