|Accession Number||DB00038 (BTD00021, BIOD00021)|
Oprelvekin, the active ingredient in Neumega® is recombinant Interleukin eleven, which is produced in Escherichia coli (E. coli) by recombinant DNA technology. The protein has a molecular mass of approximately 19,000 daltons, and is non-glycosylated. The polypeptide is 177 amino acids in length (the natural IL-11 has 178). This alteration has not resulted in measurable differences in bioactivity either in vitro or in vivo.
The primary hematopoietic activity of Neumega® is stimulation of megakaryocytopoiesis and thrombopoiesis. In mice and nonhuman primate studies Neumega® has shown potent thrombopoietic activity in compromised hematopoiesis, including moderately to severely myelosuppressed animals. In these studies, Neumega® improved platelet nadirs and accelerated platelet recoveries compared to controls.
In animal studies Oprelvekin also has non-hematopoetic activities. This includes the regulation of intestinal epithelium growth (enhanced healing of gastrointestinal lesions), the inhibition of adipogenesis, the induction of acute phase protein synthesis (e.g., fibrinogen), and inhibition of macrophageal released pro-inflammatory cytokines.
|Protein chemical formula||C854H1411N253O235S2|
|Protein average weight||19047.2 Da|
>DB00038 sequence GPPPGPPRVSPDPRAELDSTVLLTRSLLADTRQLAAQLRDKFPADGDHNLDSLPTLAMSA GALGALQLPGVLTRLRADLLSYLRHVQWLRRAGGSSLKTLEPELGTLQARLDRLLRRLQL LMSRLALPQPPPDPPAPPLAPPSSAWGGIRAAHAILGGLHLTLDWAVRGLLLLKTRLDownload FASTA Format
|External IDs||Not Available|
|Product Ingredients||Not Available|
|Approved Prescription Products|
|Approved Generic Prescription Products||Not Available|
|Approved Over the Counter Products||Not Available|
|Unapproved/Other Products||Not Available|
|International Brands||Not Available|
|Brand mixtures||Not Available|
Increases reduced platelet levels due to chemotherapy
Oprelvekin is indicated for the prevention of severe thrombocytopenia and the reduction of the need for platelet transfusions following myelosuppressive chemotherapy in adult patients with nonmyeloid malignancies who are at high risk of severe thrombocytopenia. The primary hematopoietic activity of Oprelvekin is stimulation of megakaryocytopoiesis and thrombopoiesis. Oprelvekin has shown potent thrombopoietic activity in individuals with compromised hematopoiesis
|Mechanism of action|
Oprelvekin binds to the interleukin 11 receptor which leads to a cascade of signal transduction events. IL-11 is a thrombopoietic growth factor that directly stimulates the proliferation of hematopoietic stem cells and megakaryocyte progenitor cells and induces megakaryocyte maturation resulting in increased platelet production.
Absolute bioavailability is over 80%.
|Volume of distribution||Not Available|
|Protein binding||Not Available|
|Route of elimination|
The kidney is the primary route of elimination. The amount of intact Neumega in urine was low, indicating that the molecule was metabolized before excretion.
6.9 +/- 1.7 hrs
|Pharmacogenomic Effects/ADRs||Not Available|
|Food Interactions||Not Available|
|Synthesis Reference||Not Available|
|General References||Not Available|
|ATC Codes||L03AC02 — Oprelvekin|
|AHFS Codes||Not Available|
|PDB Entries||Not Available|
|FDA label||Download (57.8 KB)|
DrugBank does not sell nor buy drugs. Pricing information is supplied for informational purposes only.
|Super Class||Organic Acids|
|Class||Carboxylic Acids and Derivatives|
|Sub Class||Amino Acids, Peptides, and Analogues|
|Alternative Parents||Not Available|
|Molecular Framework||Not Available|
|External Descriptors||Not Available|
- Pharmacological action
- General Function:
- Transmembrane signaling receptor activity
- Specific Function:
- Receptor for interleukin-11. The receptor systems for IL6, LIF, OSM, CNTF, IL11 and CT1 can utilize IL6ST for initiating signal transmission. The IL11/IL11RA/IL6ST complex may be involved in the control of proliferation and/or differentiation of skeletogenic progenitor or other mesenchymal cells. Essential for the normal development of craniofacial bones and teeth. Restricts suture fusion and t...
- Gene Name:
- Uniprot ID:
- Uniprot Name:
- Interleukin-11 receptor subunit alpha
- Molecular Weight:
- 45221.925 Da
- Nandurkar HH, Robb L, Begley CG: The role of IL-II in hematopoiesis as revealed by a targeted mutation of its receptor. Stem Cells. 1998;16 Suppl 2:53-65. [PubMed:11012177 ]
- Li R, Hartley L, Robb L: Cloning of rat interleukin 11 and interleukin 11 receptor alpha chain and analysis of their expression in rat uterus in the peri-implantation period. Reproduction. 2001 Oct;122(4):593-600. [PubMed:11570967 ]
- Nandurkar HH, Hilton DJ, Nathan P, Willson T, Nicola N, Begley CG: The human IL-11 receptor requires gp130 for signalling: demonstration by molecular cloning of the receptor. Oncogene. 1996 Feb 1;12(3):585-93. [PubMed:8637716 ]
- Romas E, Udagawa N, Zhou H, Tamura T, Saito M, Taga T, Hilton DJ, Suda T, Ng KW, Martin TJ: The role of gp130-mediated signals in osteoclast development: regulation of interleukin 11 production by osteoblasts and distribution of its receptor in bone marrow cultures. J Exp Med. 1996 Jun 1;183(6):2581-91. [PubMed:8676079 ]
- Nandurkar HH, Robb L, Tarlinton D, Barnett L, Kontgen F, Begley CG: Adult mice with targeted mutation of the interleukin-11 receptor (IL11Ra) display normal hematopoiesis. Blood. 1997 Sep 15;90(6):2148-59. [PubMed:9310465 ]
- Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [PubMed:11752352 ]