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dc.contributor.advisorMcLean, Samantha
dc.contributor.advisorKantamneni, Sriharsha
dc.contributor.advisorEl-Tanani, Mohamed
dc.contributor.advisorMorgan, Richard
dc.contributor.authorElrewey, Hussein A.S.
dc.date.accessioned2022-08-19T13:17:54Z
dc.date.available2022-08-19T13:17:54Z
dc.date.issued2020
dc.identifier.urihttp://hdl.handle.net/10454/19110
dc.description.abstractColorectal cancer (CRC) is the third most widespread and fourth most fatal malignancy disease. The CRC from a primary site can spread to other tissues, forming secondary tumours. CRC can metastasise to the liver through the effect of K-Ras and Pten mutation (Mt.) (Abbas et al. 2020). This study aimed to assess the hypothesis that the Ran inhibitor mebendazole MBZ reduces cell invasion and metastasis of CRC. I have investigated MBZ effect on the CRC isogenic human cell lines with specific mutations (HCT-116 K-Ras, DLD-1 K-Ras and Pten deletion and wild type HCT-116 and DKO-3. I used qRT-PCR and western blotting to identify expression levels of various genes and signalling molecules after treatment with 0.5 mM MBZ. In addition, several assays were performed to investigate MBZ effect on biological properties of the cells such as proliferation, migration, invasion, and colony formation. MBZ downregulated Ran and induced apoptosis through inhibition of Bcl-2 expression as well as inducing caspase -3, -7, -9 and PARP cleavage. Moreover, MBZ showed an effect on immune response by down regulating C5a, IL-1ß and IL-1α analysed at mRNA level. When treated with MBZ, the migration, invasion and colony formation abilities of HCT-116 K-Ras Mt., DLD-1 K-Ras Mt. and HCT-116 Pten-/- were significantly reduced compared to a control treated cell line. This was also the case with wild type cell lines such as HCT-116 and DKO-3. Furthermore, signalling molecules such as p- Erk 1/2 and p- Akt were upregulated after MBZ treatment and exert inhibition on Akt 1/2/3 and VEGFR1/2 mRNA levels. In conclusion; MBZ which is a Ran inhibitor, has significantly reduced proliferation, colony formation, and migration in colorectal cell lines with K-Ras and Pten gene deletion compared to wild type cells in a dose-dependent manner. This work paves the way to clinical validation of MBZ as a combination therapy for reducing the invasion of CRC cells.en_US
dc.language.isoenen_US
dc.rights<a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>.eng
dc.subjectHuman colorectal canceren_US
dc.subjectMetastasisen_US
dc.subjectK-Ras mutationen_US
dc.subjectPten deletionen_US
dc.subjectMebendazole (MBZ)en_US
dc.subjectRepurposing mebendazoleen_US
dc.subjectRan inhibitionen_US
dc.subjectWestern bloten_US
dc.subjectPolymerase chain reactionen_US
dc.subjectColony formationen_US
dc.subjectInvasionen_US
dc.subjectMigrationen_US
dc.titleThe effect of RAN inhibition on human colorectal cancer cells (CRC)en_US
dc.type.qualificationleveldoctoralen_US
dc.publisher.institutionUniversity of Bradfordeng
dc.publisher.departmentInstitute of Cancer Therapeutics, School of Pharmacy and Medical Sciences, Faculty of Life Sciencesen_US
dc.typeThesiseng
dc.type.qualificationnamePhDen_US
dc.date.awarded2020
refterms.dateFOA2022-08-19T13:17:54Z


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