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Home / Drugs / Starting with I / Interferon gamma-1b 		 
Interferon gamma-1b
  

Human Interferon gamma-1b (140 residues), produced from E. coli. Production of Actimmune is achieved by fermentation of a genetically engineered Escherichia coli bacterium containing the DNA which encodes for the human protein. Purification of the product is achieved by conventional column chromatography. The sequence displayed is a cDNA sequence which codes for human interferon gamma, as described by Gray et. al. and not specifically interferon gamma 1b.
BrandsActimmune
Actimmune (InterMune Inc)
CategoriesImmunomodulatory Agents
Antiviral Agents
PackagersI
h
SynonymsIFN-gamma
Immune interferon
Interferon gamma precursor

indication

Interferon gamma-1b is used for the treatment of Chronic granulomatous disease and Osteopetrosis.

pharmacology

IFN gamma stimulates expression of the immunoglobulin heavy chain C gamma 3 and C gamma 2a germline transcripts in B cells. Many components of the antigen presentation pathways are also up-regulated by interferon gamma. It is also a potent activator of macrophages, it has antiproliferative effects on transformed cells and it can potentiate the antiviral and antitumor effects of type I interferons. Interferon gamma may also help the body regulate the activity of fibroblasts. By directly blocking the multiplication of fibroblasts and inhibiting the production and action of TGF-b, a potent scar-inducing molecule, Interferon gamma-1b may prevent excessive scarring.

mechanism of action

Binds directly to the type II interferon gamma receptor IFNGR1, leading to a complex of IFNGR1 and IFNGR2. This activates JAK1 and JAK2 kinases which form a STAT1 docking site. This leads to STAT1 phosphorylation, nuclear translocation and initiation of gene transcription of multiple immune-related genes.

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