Georgetown University

Other

University of Georgia Research Foundation Inc

Wichita State University

Brent E Korba

John L Gerin

Chung K Chu

William C Groutas

Bud Tennant

John L Casey

Paul J Cote

Curtis C Harris

John F Lechner

Richard A Calderone

Radhakrishnan Padmanabhan

George H Yoakum

Novel classes of 1,2-benzisothiazolinone and isoindolinone compounds and compositions are disclosed. These compounds and compositions are useful in treating, preventing, and/or ameliorating viral, yeast, and fungal infections such as, for example, Hepatitis C Virus, Flavivirus infections,, and candidiasis.

1,2-benzisothiazolinone and isoindolinone derivatives

Novel classes of viral and fungal inhibitors are disclosed. These compounds are useful in treating, preventing, and/or ameliorating viral infections such as, for example, Hepatitis C Virus, West Nile Virus, Dengue Virus, and Japanese Encephalitis Virus, and fungal infections such as, for example, candidiasis.

Viral and fungal inhibitors

A method for the treatment for hepatitis delta infection in a host, that includes administering an effective amount of a nucleoside or a nucleoside analog that suppresses the expression of the hepatitis B surface or preS1 antigen in the host 100-fold or more relative to pretreatment values in vivo; or to not more than 1 microgram per milliliter in vivo. In a preferred embodiment, the nucleoside is L-FMAU, or a pharmaceutically acceptable salt or prodrug thereof.

Method of treating hepatitis delta virus infection

Antisense oligonucleotides that hybridize to segments of the pres1, S, C, and &egr; regions of the hepatitis B virus (HBV) RNA pregenome inhibit replication of the virus. Pharmaceutical compositions which contain these oligonucleotides as the active ingredients are effective against HBV infection.

Antisense ogligonucleotides against Hepatitis B viral replication

Antisense oligonucleotides that hybridize to segments of the preS1, S, C, and .epsilon. regions of the hepatitis B virus (HBV) RNA pregenome inhibit replication of the virus. Pharmaceutical compositions which contain these oligonucleotides as the active ingredients are effective against HBV infection.

Antisense oligonucleotides against hepatitis B viral replication

A modified protoplast fusion method and cell line is disclosed that stably transfects human cells with pSV2-derived plasmids at frequencies greater than 10.sup.-3. This procedure makes it possible to test the biological effect of individual genes (i.e., oncogenes and other cellular genes, and viral genes). To demonstrate the utility of this invention, a pSV2gpt.sup.+ plasmid constructed to carry a subgenomic fragment of hepatitis B virus (HBV) that contained the core antigen gene (HBc gene) is transfected into human cells. Human cell lines are stably transfected with the HBC.sup.+ gene by selecting recipient cells for expression of guanine phosphoribosyl transferase expression; other selective markers, i.e., neomycin resistance, can also be used. Conditions for enhancing the expression of the transfected gene(s) have also been developed. For example, with this gpt.sup.+ /HBc.sup.+ cell line it is shown that growth in serum-free medium or treatment with 5'-azacytidine stimulates the production of the HBV core antigen.

Growing community of inventors

Laurel, MD, United States of America

Brent E Korba