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MEK1MAP (Mitogen-Activated Protein) Kinase/ERK (Extracellular Signal-Regulated Kinase) Kinase 1
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In melorheostosis, all the identified MAP2K1 mutations affected a region of the MEK1 protein that normally suppresses its activity, thus, they caused MEK1 to become overactive.
After the samples were blocked in 5% nonfat milk in Tris-buffered saline, immunoblotting was conducted using a primary antibody against SP-A at a dilution of 1:150 or TLR4 at a dilution of 1:500 (Abcam, Britain, ab22048) or NF-kB (Abcam, Britain, ab32536) at a dilution of 1:5000 or IkB-a (Abcam, Britain, ab133462) or MEK1 (Abcam, Britain, ab32091) at a dilution of 1:1000 and phosphorylated MEK1 (p-MEK1) (Abcam, Britain, ab96379) at a dilution of 1:800 or ERK2 (Abcam, Britain, ab32081) at a dilution of 1:1000 and phosphorylated ERK1/2 (Abcam, Britain, ab201015) at a dilution of 1:800 or P38MAPK at a dilution of 1:3000 (Abcam, Britain, ab170099) and phosphorylated P38MAPK (Abcam, Britain, ab47363) at a dilution of 1:500, and then secondary antibody conjugated with horseradish peroxidase.
In addition to the above tests, the company has kits for detecting mutations in JAK2, C-KIT, BCR-ABL, MEK1 and HER2 oncogene.
The new drug, called selumetinib, works by disrupting the enzymes (MEK1 and MEK2) which are involved in the signalling pathway associated with these genes, and has been shown in preliminary research to disrupt the growth of melanoma cells in the laboratory and now in early stage human trials.
Dinesh-Kumar, "Involvement of MEK1 MAPKK, NTF6 MAPK, WRKY/MYB transcription factors, COI1 and CTR1 in N-mediated resistance to tobacco mosaic virus," Plant Journal, vol.
The miR-34a contributes to MK differentiation by targeting cMyb, CDKs and it targets MEK1, thereby repressing proliferation [42,43].
published the results of a phase 1/2 study that investigated the combination of dabrafenib and trametinib, a MEK1 inhibitor [7].
Zhang H, Feng H, Luo L, Zhou Q, Luo Z, Peng Y (2010) Distinct effects of knocking down MEK1 and MEK2 on replication of herpes simplex virus type 2.
Meanwhile, MAPK signaling pathway molecules including MEKK1, ASK1 (MAP3K5), MLK2 (MAP3K10), MLK3, NIK, MEK1 (MAP2K1), MEK2 (MAP2K2), MEK4 (MAP2K4), MEK7 (MAP2K7), ERK1 (MAPK3), JNK1 (MAPK8) and JNK2 (MAPK9) were significantly up-regulated and revealed 2.00-4.09 fold increases in expression level (Table 1).
It is clear that the meiosis specific kinase MEK1 plays a role in ensuring interhomolog binding through its interaction with RAD54 and RAD51 [39, 40].
Es geneticamente heterogeneo, con reportes de mutaciones heterocigoticas en por lo menos nueve genes (PTPN11, SOS1, KRAS, NRAS, RAF1, BRAF, SHOC2, MEK1 y CBL) descritos en esta alteracion o fenotipos clinicos relacionados.