Interferon_alfa-2b: profile and news

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Other information

Indication
For treatment of hairy cell leukemia, malignant melanoma, and AIDS-related Kaposi's sarcoma

Pharmacology
Upregulates the expression of MHC I proteins, allowing for increased presentation of peptides derived from viral antigens. This enhances the activation of CD8+ T cells that are the precursors for cytotoxic T lymphocytes (CTLs) and makes the macrophage a better target for CTL-mediated killing. Interferon alpha also induce the synthesis of several key antiviral mediators, including 2'-5' oligoadenylate synthetase (2'-5' A synthetase) and protein kinase R.

Mechanism Of Action
Interferon alpha binds to type I interferon receptors (IFNAR1 and IFNAR2c) which upon dimerization activate two Jak (Janus kinase) tyrosine kinases (Jak1 and Tyk2). These transphosphorylate themselves and phosphorylate the receptors. The phosphorylated INFAR receptors then bind to Stat1 and Stat2 (signal transducers and activators of transcription)which dimerize and activate multiple (~100) immunomodulatory and antiviral proteins. Interferon alpha binds less stably to type I interferon receptors than interferon beta.

Drug Category
Antiviral Agents; Immunomodulatory Agents; Antineoplastic Agents; interferons (08:18.20);antineoplastic agents (10:00.00)

Brand Names/Synonyms
Interferon alpha-2 precursor;Interferon alpha-A;LeIF A; Intron A (Schering Corp)

Dosage Forms
LIQUID

Absorption
Not Available

Interactions
Not Available

Chemical IUPAC Name
Not Available

Chemical Formula
C860H1353N229O255S9

Half Life
Not Available

Drug Type
Approved Drug

# Accession No
BIOD00066

CAS Registry Number
98530-12-2