Modified immunodeficiency virus particles
First Claim
1. A modified viral particle comprising at least a partially delipidated viral particle, wherein the partially delipidated viral particle is immunodeficiency virus and the partially delipidated viral particle:
- initiates a positive immune response in an animal or human;
comprises at least one exposed epitope not usually presented to an immune system of the animal or the human by a non-delipidated viral particle; and
wherein the partially delipidated viral particle is obtained by a process consisting essentially of treating a lipid-containing viral particle with an organic solvent that is not a detergent or a surfactant.
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Abstract
The present invention relates to a method for reducing the occurrence and severity of infectious diseases, especially infectious diseases in which lipid-containing infectious organisms are found in biological fluids, such as blood. The present invention employs solvents useful for extracting lipids from the lipid-containing infectious organism, thereby reducing the infectivity of the infectious organism. The present invention uses optimal solvent systems such that the lipid envelope around the viral particle is dissolved while the viral particle remains intact, resulting in a modified viral particle. The present invention also provides an autologous vaccine composition, comprising a lipid-containing infectious organism, treated with solvents to reduce the lipid content of the infectious organism, combined with a pharmaceutically acceptable carrier. The vaccine composition is administered to an animal or a human to provide protection against the lipid-containing infectious organism. The present invention further provides a simple, inexpensive and easy to use kit for delipidating fluids and for delipidation of lipid-containing organisms in a fluid.
141 Citations
24 Claims
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1. A modified viral particle comprising at least a partially delipidated viral particle, wherein the partially delipidated viral particle is immunodeficiency virus and the partially delipidated viral particle:
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initiates a positive immune response in an animal or human; comprises at least one exposed epitope not usually presented to an immune system of the animal or the human by a non-delipidated viral particle; and wherein the partially delipidated viral particle is obtained by a process consisting essentially of treating a lipid-containing viral particle with an organic solvent that is not a detergent or a surfactant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A modified viral particle comprising at least a partially delipidated viral particle, wherein the partially delipidated viral particle is immunodeficiency virus and the partially delipidated viral particle:
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initiates a positive immune response in an animal or a human; comprises at least one exposed epitope not usually presented to an immune system of the animal or the human by a non-delipidated viral particle, wherein the modified viral particle comprises at least one immunoreactive protein selected from a group consisting of p24, gp41 and gp120; and is obtained by a process consisting essentially of treating a lipid-containing viral particle with an organic solvent that is not a detergent or a surfactant.
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24. A modified viral particle comprising at least a partially delipidated viral particle, wherein the partially delipidated viral particle is immunodeficiency virus and the partially delipidated viral particle:
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initiates a positive immune response in an animal or a human; comprises an envelope, wherein the envelope comprises no extrinsic detergent or surfactant molecules; and
,comprises at least one exposed epitope not usually presented to an immune system of the animal or the human by a non-delipidated viral particle, wherein the modified viral particle is SIV and retains over 90% of major protein constituents compared to the non-delipidated viral particle and the major protein constituents of the modified viral particle comprise gag or env proteins; wherein the partially delipidated viral particle is obtained by a process consisting essentially of treating a lipid-containing viral particle with an organic solvent that is not a detergent or a surfactant.
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Specification