Abstract 169P
Background
The main issue of this study is to demonstrate whether M-phase phosphoprotein 8 (MPP8) affect gastric tumour growth and metastasis.
Methods
Retrospective study was proceeded in 280 patients’ surgical specimens with different disease stages. Lentivirus delivery of short hairpin RNA targeting MPP8 was also used to explore the function of MPP8 in gastric cancer cells. Quantitative real-time PCR and western blot were applied to measure apoptosis and metastasis relative biomarker.
Results
The present study revealed that MPP8 expression was higher in surgical specimens from patients with gastric cancer (vs. normal adjacent tissues), and that elevated expression was associated with male sex (vs. female sex), intermediate differentiation (vs. poorly differentiated cancer), and later stage (vs. earlier stage). Furthermore, MPP8 overexpression in tumour tissues was marginally associated with a poor prognosis, with a significant relationship between MPP8 overexpression and prognosis among patients with poorly differentiated gastric cancer. Inhibition of MPP8 in these cells significantly suppressed proliferation and colony formation, promoted apoptosis, and repressed invasion. Furthermore, silencing of MPP8 remarkably increased the expression of apoptosis-related proteins (p53, Bax, and PARP), and down-regulated Bcl-2 expression. Silencing of MPP8 also decreased the expression of metastasis pathway-related proteins (N-cadherin and vimentin), and as well as the levels of anti-oncogene ZEB1, MET, and KRAS mRNA.
Conclusions
These results suggest that MPP8 plays a critical role in regulating gastric cancer apoptosis and metastasis via the p53/Bcl-2 and EMT-related signalling pathways, respectively, which may indicate that MPP8 is a promising target for treating gastric cancer.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
The authors.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
51P - Enhancing the anti-breast tumour activity of STING through a novel sting transcriptional regulator
Presenter: Hanchu Xiong
Session: Poster display session
Resources:
Abstract
52P - Reverse Warburg effect-related mitochondrial activity and 18F-FDG uptake in invasive ductal carcinoma
Presenter: Byung Wook Choi
Session: Poster display session
Resources:
Abstract
53P - Phase II study of atorvastatin in combination with radiotherapy and temozolomide in patients with glioblastoma (ART): Final analysis report
Presenter: Abdullah Altwairgi
Session: Poster display session
Resources:
Abstract
54P - Association between Parkinson’s disease and brain tumours: A nationwide population-based cohort study
Presenter: Joo-hyun Park
Session: Poster display session
Resources:
Abstract
55P - Toxicity profiles of treatment with modern fractionated radiotherapy, contemporary stereotactic radiosurgery, or transsphenoidal surgery in non-functioning pituitary macroadenoma
Presenter: Kevin Sheng-Po Yuan
Session: Poster display session
Resources:
Abstract
56P - Hippocampal avoidance in WBRT for metastases: Comparative neurocognitive and dosimetric assessment
Presenter: Vibhay Pareek
Session: Poster display session
Resources:
Abstract
57P - Multidisciplinary brain metastasis clinic: Is it effective and worthwhile?
Presenter: Annu Rajpurohit
Session: Poster display session
Resources:
Abstract
58P - Functional status as a determinant prognostic factor for overall survival in adult patients with medulloblastoma treated with chemotherapy and radiotherapy
Presenter: Juan Ayala Alvarez
Session: Poster display session
Resources:
Abstract
59P - Pattern of care in high-grade gliomas after recurrence
Presenter: Nandini Menon
Session: Poster display session
Resources:
Abstract
60P - Five fractions plus “SRS” boost combined with temozolamide for newly diagnosed and recurrent glioblastoma multiforme (GBM)
Presenter: Azhar Rashid
Session: Poster display session
Resources:
Abstract