Functional immunoliposomes harboring a biosynthetically lipid-tagged single-chain antibody.
Functional immunoliposomes harboring a biosynthetically lipid-tagged single-chain antibody.
复制标题
功能性免疫脂质体含有生物合成的脂质标记单链抗体。
作者:
M. Laukkanen;K. Alfthan;K. Keinänen
An anti-2-phenyloxazolone single-chain antibody was expressed in Escherichia coli as a lipoprotein fusion in order to generate a biosynthetically lipid-tagged molecule [Laukkanen et al. (1993) Protein Eng. 6, 449-454]. For purification, a hexahistidinyl tag was introduced to the C-terminus of the protein. The resulting antibody, termed Ox lpp-scFv-H6, was membrane-bound, displayed hapten-binding activity, and contained the lipoprotein-specific lipid modification as indicated by metabolic [3H]palmitic acid labeling. The Ox lpp-scFv-H6 was purified by immobilized metal affinity chromatography followed by hapten-based affinity chromatography to essential homogeneity with a yield of 0.4-1.6 mg/L of culture. In detergent dialysis, the purified antibody partitioned quantitatively into phospholipid liposomes. The immunoliposome preparation consisting of a homogeneous population of unilamellar 100-200 nm vesicles displayed specific hapten-binding activity as measured by using ELISA and surface plasmon resonance (SPR)-based real-time biospecific interaction analysis. In SPR experiments, the immunoliposomes exhibited virtually irreversible binding to immobilized hapten compared to soluble antibody fragments, consistent with the predicted multivalent binding. Biosynthetic lipid-tagging of antibodies may prove useful for immunoliposome-based diagnostic and therapeutic applications.
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DOI:
10.1016/s0021-9258(19)70595-x
发表时间:
1980-09
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
A. Huang;L. Huang;S. Kennel
通讯作者:
A. Huang;L. Huang;S. Kennel
DOI:
10.1073/pnas.84.22.7851
发表时间:
1987
影响因子:
11.1
作者:
Wang,CY;Huang,L
通讯作者:
Huang,L
影响因子:
2.9
作者:
M. Tai;Meredith Mudgett-Hunter;Douglas Levinson;Gay‐May Wu;Edgar Haber;Hermann Oppermann;James S. Huston
通讯作者:
M. Tai;Meredith Mudgett-Hunter;Douglas Levinson;Gay‐May Wu;Edgar Haber;Hermann Oppermann;James S. Huston
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ghrayeb,J;Inouye,M
通讯作者:
Inouye,M
影响因子:
11.2
作者:
Hughes,BJ;Kennel,S;Lee,R;Huang,L
通讯作者:
Huang,L