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A MEK inhibitor is a chemical or drug that inhibits the mitogen-activated protein kinase kinase enzymes MEK1 and/or MEK2. They can be used to affect the MAPK/ERK pathway which is often overactive in some cancers.
A mitogen-activated protein kinase (MAPK or MAP kinase) is a type of serine/threonine-specific protein kinases involved in directing cellular responses to a diverse array of stimuli, such as mitogens, osmotic stress, heat shock and proinflammatory cytokines.
Tyrosine kinase inhibitor (TKI) with selective activity against RET, VEGFR-2 and EGFR: Medullary thyroid cancer. Diarrhoea, hypertension, QT interval prolongation, depression, electrolyte anomalies, hypothyroidism and GI perforation (uncommon). 2.3 mTOR inhibitors: Everolimus: PO: mTOR inhibitor.
Selumetinib is a kinase inhibitor, more specifically a selective inhibitor of the enzyme mitogen-activated protein kinase kinase (MAPK kinase or MEK) subtypes 1 and 2. These enzymes are part of the MAPK/ERK pathway, which regulates cell proliferation (i.e., growth and division) and is overly active in many types of cancer. [18]
Kinase inhibitors such as dasatinib are often used in the treatment of cancer and inflammation. [1] Some of the kinase inhibitors used in treating cancer are inhibitors of tyrosine kinases. [2] The effectiveness of kinase inhibitors on various cancers can vary from patient to patient. [3]
Binimetinib, sold under the brand name Mektovi, is an anti-cancer medication used to treat various cancers. [4] Binimetinib is a selective inhibitor of MEK, a central kinase in the tumor-promoting MAPK pathway. [5] Inappropriate activation of the pathway has been shown to occur in many cancers. [5]
Erlotinib, sold under the brand name Tarceva among others, is a medication used to treat non-small cell lung cancer (NSCLC) and pancreatic cancer. [4] Specifically it is used for NSCLC with mutations in the epidermal growth factor receptor (EGFR) — either an exon 19 deletion (del19) or exon 21 (L858R) substitution mutation — which has spread to other parts of the body. [4]
It is a highly selective inhibitor of both MEK1 and MEK2, a type of MAPK/ERK kinase. [ 10 ] [ 11 ] U0126 was found to functionally antagonize AP-1 transcriptional activity via noncompetitive inhibition of the dual specificity kinase MEK with IC 50 of 72 nM for MEK1 and 58 nM for MEK2.