Abstract Library

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#4415 MGMT-activated DUB3 stabilises Nrf2/NCOA4 to modulate apoptosis and ferroptosis, driving temozolomide resistance in pancreatic neuroendocrine tumours

Introduction: O6-methylguanine DNA methyltransferase (MGMT) is a key DNA repair enzyme that removes methyl groups from O(6)-alkylguanine in DNA, introduced by temozolomide (TMZ). Clinical studies in pancreatic neuroendocrine tumours (PanNETs) have confirmed its role in TMZ efficacy.

Conference:

Presenting Author: Cheng Z

Authors: Cheng Z, Yu F, Chen R, Wang Y, Chen X,

Keywords: pancreatic neuroendocrine tumour, MGMT, temozolomide, ferroptosis,

#4397 DNA repair enzyme regulation strategy for enhanced pancreatic neuroendocrine tumour therapy via targeting siRNA-lipid nanoparticles

Introduction: Pancreatic neuroendocrine tumours (panNETs) originate from neuroendocrine cells with high rates of metastasis, rendering many patients’ ineligible for surgical resection. The first-line chemotherapeutic agent temozolomide (TMZ) for metastatic panNETs faces challenges related to resistance, primarily mediated by the DNA repair enzyme O6-methylguanine-DNA methyltransferase (MGMT).

Conference:

Presenting Author: Wang F

Authors: Wang F, Xu J, Xu X, Qin Y, Chen J,

Keywords: Lipid nanoparticle, siRNA, DNA repair enzyme, pancreatic neuroendocrine tumour, temozolomide,

#55 Metronomic combination therapy including temozolamide, bevacizumab and somatostatin analogue for the treatment of malignant gastroenteropancreatic neuroendocrine tumors

Introduction: Malignant gastroenteropancreatic neuroendocrine tumors (GEPNETS), mainly carcinoids, are not considered to be particularly chemotherapy-sensitive to conventional chemotherapeutic schemes. Long-standing evidence suggests these tumors to be highly vascularised and responsive to antiangiogenic strategies. Newest reports demonstrate benefit by the use of temozolamide, an oral alkylating agent similar to intravenous dacarbazine. The DNA repair enzyme O6-alkylguanine–DNA alkyltransferase (AGAT) confers cancer cell resistance to O6-alkylating agents such as temozolamide through its ability to remove methyl/alkyl groups from the O6-position of guanine, thus correcting drug-induced DNA damage.

Conference: 7th Annual ENETSConcerence (2010)

Presenting Author:

Authors: Koumarianou A, Zilos A, Syrios J, Kanakis G, Antoniou S,

Keywords: GEPNETs, temozolamide, bevacizumab, somatostatin analogue,