INT119838
From wiki-pain
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Sentences Mentioned In
Key: | Protein | Mutation | Event | Anatomy | Negation | Speculation | Pain term | Disease term |
In that regard, Kwak et al. [77] showed that AG-490, an inhibitor of Jak2/Jak3 activity, actually induced osteoclast survival by activating both the MEK/ERK and PI3K/PTEN/Akt cell survival pathway. | |||||||||||||||
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NSAIDs activate PTEN and other phosphatases in human colon cancer cells: novel mechanism for chemopreventive action of NSAIDs. | |||||||||||||||
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A more recent study suggested that diabetic-associated ED due to upregulation of the penile RhoA/Rho-kinase pathway enhances PTEN/Akt activity leading to corporal apoptosis [91]. | |||||||||||||||
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Evaluation of PTEN inactivation in endometrial carcinoma precursor lesions by PTEN immunostaining has been proposed. | |||||||||||||||
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PTEN (the lipid phosphatase and tensin homolog) is a key tumor suppressor that normally regulates the activation of PI3K.66 The loss of PTEN and mutations in PI3K have been proposed to predict resistance to EGFR inhibitors, however, this is preliminary and no definite conclusions can be derived.64
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This immunohistochemical pattern suggests that the large dysplastic ganglion cells (the gangliocytomatous component) forming the greater part of the lesion were associated with activation of the phosphatidylinositol 3-kinase-PTEN/Akt/mTOR signaling pathway, a feature previously reported in LDD. | |||||||||||||||
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PTEN (the lipid phosphatase and tensin homolog) is a key tumor suppressor that normally regulates the activation of PI3K.66 The loss of PTEN and mutations in PI3K have been proposed to predict resistance to EGFR inhibitors, however, this is preliminary and no definite conclusions can be derived.64
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was found to inhibit phosphatidylinositol 3-kinase (PI3K)/Akt signaling and retinoblastoma protein (Rb) dephosphorylation [70], induce expression of cyclin D1 [71] and Bcl-xl/Bcl-2 [72], upregulate p21 and p27 [7375], interact with XIAP [76], upregulate PTEN [77], and enhance the sensitivity of tumor cells to tumor necrosis factor-related apoptosis-inducing ligand- (TRAIL-) induced cell death [78]. | |||||||||||||||
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Recently, interactions between the PI3K/AKT and p53 signaling pathways have been described in which activation of the PI3K/AKT pathway through PTEN or PIK3CA mutations, together with p53 inactivation, results in malignant transformation [15]. | |||||||||||||||
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Some investigators have claimed that PIK3CA mutations are mutually exclusive of PTEN mutations, suggesting that tumorigenic signaling through this pathway can occur either through activation of PIK3CA or inactivation of PTEN [9]. | |||||||||||||||
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PTEN is a major tumor suppressor gene that is inactivated in 50% of high-grade gliomas (5). | |||||||||||||||
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It has been shown that NS-398 was able to increase the level of PTEN in human gastric carcinoma cell line MKN45 [114]. | |||||||||||||||
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These results demonstrate that the ability of PTEN to negatively regulate the PI 3-K/Akt/NF-? | |||||||||||||||
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of IkB, induction of TSC22, NF-kB, GADD153, PTEN, etc.) may depend on the | |||||||||||||||
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We have demonstrated previously that Akt is constitutively phosphorylated/activated in two mutated-PTEN human endometrial cancer cell lines that have been used in the present study (RL 95-2 and Ishikawa) [32,42]. | |||||||||||||||
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associated with synergistic upregulation of PTEN expression [49]. | |||||||||||||||
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of Akt, an upstream positive modulator of mTOR, and to increase PTEN, a | |||||||||||||||
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TZDs
induced upregulation of PTEN and p21, downregulation of cyclins D and E, and | |||||||||||||||
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Somatic mutation of PTEN was also demonstrated in some cases of vulvar SCC and VIN, suggesting that PTEN mutation possibly played a role early in the carcinogenesis of vulvar SCC [37]. | |||||||||||||||
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Despite documented HER2 receptor amplification, patients may have de novo or acquired resistance to trastuzumab. 39 Potential mechanisms of trastuzumab resistance include altered receptorantibody interaction (MUC4, p95HER2, ErbB2 mutations), altered downstream signaling (reduced p27, reduced PTEN, activation of PI3K, activation of Akt) and crosstalk with other signaling pathways (IGF-R1, ER, VEGFR).40 The p95HER2 receptor is created either by cleavage and shedding of the extracellular domain of the HER2 receptor or by specific mRNA splicing, resulting in a constitutively active truncated receptor which is associated with a more aggressive phenotype. | |||||||||||||||
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