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Protein expression analysis of PI3K/AKT pathway components in cells expressing INPP5K and MYO1C
Högskolan i Skövde, Institutionen för biovetenskap.
2012 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

In an Experimental Rat model for endometrial carcinoma (EC) a minimal region of recurrent deletion/allelic loss at the neighborhood of the Tp53 gene has been identified. A similar observation of deletion at the homologous position on human chromosome 17 unassociated with TP53 mutation has been reported in several human cancer types. Thus an important tumor suppressor activity located close to, but distinct of TP53 is suggested. Detailed molecular analysis of this candidate region in a tumor model suggested Myo1c (myosin 1C) and Inpp5k (inositol polyphosphate-5-phosphatase K), also known as Skip (skeletal muscle and kidney enriched inositol polyphosphate phosphatase), as the best candidates. These two genes are suggested to be involved in glucose metabolism through PI3K/AKT signaling and neither of them has earlier been reported as a tumor suppressor gene. The present work aimed to investigate the potential correlation of MYO1C and/or INPP5K proteins with components of PI3K/AKT signaling pathway involved in cell growth and survival. Cells were transfected with increasing amounts of MYO1C- or INPP5K- gene expression constructs and protein extracts of the cells were subjected to Western Blot analysis for 13 important components of the signaling pathway: p110β\α\δ, p85, pAkt308&473, 14-3-3β, PTEN, Akt, pErk, Erk, Ras, p4EBP1 and 4EBP1. The analysis showed dose-dependent changes in the expression levels of several of these proteins, and the observed changes for the most part were directed towards negative regulation of cell proliferation and survival. The presented data further extended the initial hypothesis for potential tumor suppressor activities of MYO1C and INPP5K proteins through PI3K/AKT pathway.

Ort, förlag, år, upplaga, sidor
2012. , s. 18
Nyckelord [en]
PI3K/AKT, INPP5K, MYO1C, Tumor Biology, Transfection, Protein expression
Nationell ämneskategori
Medicinsk bioteknologi
Identifikatorer
URN: urn:nbn:se:his:diva-12988OAI: oai:DiVA.org:his-12988DiVA, id: diva2:991811
Ämne / kurs
Biomedicin/medicinsk vetenskap
Utbildningsprogram
Biomedicin - magisterprogram
Handledare
Examinatorer
Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2016-09-29Bibliografiskt granskad

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Mehrbani Azar, Yashar
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