Synthesis and Evaluation of a Novel Synthetic Phosphocholine Lipid‐AZT Conjugate That Double‐Targets Wild‐Type and Drug Resistant Variants of HIV
摘要:
INK-20, a synthetic phosphocholine lipid-AZT conjugate, was evaluated for antiviral activity against wild-type HIV-1, a matched pair of pre-AZT and post-AZT and multidrug resistant clinical isolates. In addition, it was tested for activity against viruses resistant to nucleoside (AZT, 3TC) and nonnucleoside (nevirapine) reverse transcriptase and protease (saquinavir) inhibitors using the syncytial plaque reduction assay for infectious virus multiplication. The EC50 values were 0.004, and 0.005 muM against wild-type HIV-1 for INK-20 and AZT, respectively. INK-20 showed little or no cytotoxicity when assayed in CEM-SS cells and four other cell types including PBMC. This resulted in a selective index of > 25,000 and > 20,000 for INK-20 and AZT, respectively. When tested against a matched pair of pre-AZT and post-AZT clinical isolates, the EC50 values were 0.01 and 0.03 muM for INK-20 and 0.0005 and 0.33 muM for AZT, respectively. INK-20 had moderate to good activity against two other AZT resistant variants and very good activity against a multi-drug resistant clinical isolate compared to marked resistance of these viruses to AZT alone. INK-20 retained significant activity against viruses resistant to 3TC, nevirapine, and saquinavir. The synthetic phosphocholine lipid-AZT conjugate INK-20 represents a novel class of anti-HIV compounds, which may provide new strategies for the treatment of HIV drug-resistant variants.
Synthesis and Evaluation of a Novel Synthetic Phosphocholine Lipid‐AZT Conjugate That Double‐Targets Wild‐Type and Drug Resistant Variants of HIV
摘要:
INK-20, a synthetic phosphocholine lipid-AZT conjugate, was evaluated for antiviral activity against wild-type HIV-1, a matched pair of pre-AZT and post-AZT and multidrug resistant clinical isolates. In addition, it was tested for activity against viruses resistant to nucleoside (AZT, 3TC) and nonnucleoside (nevirapine) reverse transcriptase and protease (saquinavir) inhibitors using the syncytial plaque reduction assay for infectious virus multiplication. The EC50 values were 0.004, and 0.005 muM against wild-type HIV-1 for INK-20 and AZT, respectively. INK-20 showed little or no cytotoxicity when assayed in CEM-SS cells and four other cell types including PBMC. This resulted in a selective index of > 25,000 and > 20,000 for INK-20 and AZT, respectively. When tested against a matched pair of pre-AZT and post-AZT clinical isolates, the EC50 values were 0.01 and 0.03 muM for INK-20 and 0.0005 and 0.33 muM for AZT, respectively. INK-20 had moderate to good activity against two other AZT resistant variants and very good activity against a multi-drug resistant clinical isolate compared to marked resistance of these viruses to AZT alone. INK-20 retained significant activity against viruses resistant to 3TC, nevirapine, and saquinavir. The synthetic phosphocholine lipid-AZT conjugate INK-20 represents a novel class of anti-HIV compounds, which may provide new strategies for the treatment of HIV drug-resistant variants.
Compositions and methods of double-targeting virus infections and cancer cells
申请人:——
公开号:US20020082242A1
公开(公告)日:2002-06-27
The invention includes compositions and methods useful for treatment of a virus infection in a mammal by double-targeting the virus (i.e. targeting the virus at more than one stage of the virus life cycle) and thereby inhibiting virus replication. The compositions of the invention include compounds, which comprise a phosphocholine moiety covalently conjugated with one or more therapeutic agents (e.g. nucleoside analogue, protease inhibitor, etc.) to a lipid backbone. The invention also includes pharmaceutical compositions for use in treatment of a virus infection in mammals. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt or a prodrug thereof, or a pharmaceutical composition of the invention, in an amount effective to treat the infection, to a mammal infected with a virus. Additionally, the invention includes compositions and methods useful for combating a cancer in a mammal and facilitating delivery of a therapeutic agent to a mammalian cell. The compositions of the invention include compounds, which comprise an alkyl lipid or phospholipid moiety covalently conjugated with a therapeutic agent (e.g., a nucleoside analogue). The invention also includes pharmaceutical compositions for combating cancer and facilitating delivery of a therapeutic agent to a mammalian cell. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt or a prodrug thereof, or a pharmaceutical composition of the invention, in an amount effective to combat a cancer or to facilitate delivery of a therapeutic agent to a mammalian cell.
Compositions and methods for targeting cancer cells
申请人:University of North Carolina at Chapel Hill
公开号:US20040161398A1
公开(公告)日:2004-08-19
The invention includes compositions and methods useful for treatment of a virus infection in a mammal by double-targeting the virus (i.e. targeting the virus at more than one stage of the virus life cycle) and thereby inhibiting virus replication. The compositions of the invention include compounds which comprise a phosphocholine moiety covalently conjugated with one or more antiviral agents (e.g. nucleoside analogue, protease inhibitor, etc.) to a lipid backbone. The invention also includes pharmaceutical compositions and kits for use in treatment of a virus infection in mammals. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of the invention, in an amount effective to treat the infection, to a mammal infected with a virus. Additionally, the invention includes compositions and methods useful for combating a cancer in a mammal and for facilitating delivery of a therapeutic agent to a mammalian cell. The compositions of the invention include compounds which comprise an alkyl lipid or phospholipid moiety covalently conjugated with an anticancer agent (e.g. a nucleoside analogue). The invention also includes pharmaceutical compositions and kits for combating a cancer and for facilitating delivery of a therapeutic agent to a mammalian cell. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of the invention, in an amount effective to combat a cancer or to facilitate delivery of a therapeutic agent to a mammalian cell.
Compositions and Methods for Double-Targeting Virus Infections and Targeting Cancer Cells
申请人:KUCERA Louis S.
公开号:US20100184718A1
公开(公告)日:2010-07-22
The invention includes compositions and methods useful for treatment of a virus infection in a mammal by double-targeting the virus (i.e. targeting the virus at more than one stage of the virus life cycle) and thereby inhibiting virus replication. The compositions of the invention include compounds which comprise a phosphocholine moiety covalently conjugated with one or more antiviral agents (e.g. nucleoside analogue, protease inhibitor, etc.) to a lipid backbone. The invention also includes pharmaceutical compositions and kits for use in treatment of a virus infection in mammals. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of the invention, in an amount effective to treat the infection, to a mammal infected with a virus. Additionally, the invention includes compositions and methods useful for combating a cancer in a mammal and for facilitating delivery of a therapeutic agent to a mammalian cell. The compositions of the invention include compounds which comprise an alkyl lipid or phospholipid moiety covalently conjugated with an anticancer agent (e.g. a nucleoside analogue). The invention also includes pharmaceutical compositions and kits for combating a cancer and for facilitating delivery of a therapeutic agent to a mammalian cell. The methods of the invention comprise administering a compound of the invention, a pharmaceutically acceptable salt thereof, or a pharmaceutical composition of the invention, in an amount effective to combat a cancer or to facilitate delivery of a therapeutic agent to a mammalian cell.