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
358P - Evaluation of continuous low dose versus standard dose capecitabine monotherapy as second/third-line chemotherapy for metastatic malignancies
Presenter: Swaroop Revannasiddaiah
Session: Poster display session
Resources:
Abstract
359P - Factors associated with economic burden among cancer patients with minor children: A cross-sectional web-based survey of an online cancer community
Presenter: Midori Yuki
Session: Poster display session
Resources:
Abstract
360P - Factors influencing treatment decisions among breast cancer patients in the Philippine general hospital cancer institute: Medical oncology outpatient clinic
Presenter: Bobby De Guzman
Session: Poster display session
Resources:
Abstract
361P - The role of volunteers in quality palliative care delivery
Presenter: NABANITA MANDAL
Session: Poster display session
Resources:
Abstract
362P - Survey to assess the efficacy of continuity of care delivered through an out of hours telephonic consultation liaison
Presenter: Rahul D. Arora
Session: Poster display session
Resources:
Abstract
366P - Activity of larotrectinib in TRK fusion cancer patients with primary central nervous system tumours
Presenter: David Ziegler
Session: Poster display session
Resources:
Abstract
367P - Molecular characteristics and efficacy of crizotinib among different subsets of MET Amplification detected by next-generation sequencing in lung cancer
Presenter: Jing Li
Session: Poster display session
Resources:
Abstract
368P - Genomic analysis of malaysian breast cancers unravel molecular differences from Caucasian breast cancers
Presenter: Soo-Hwang Teo
Session: Poster display session
Resources:
Abstract
369P - Institutional-based prospective molecular profiling of advanced solid tumours in Hong Kong: A report of 253 cases
Presenter: Herbert Loong
Session: Poster display session
Resources:
Abstract
370P - Tumour mutation burden analysis in a 5660-cancer-patient cohort reveals cancer type-specific mechanisms for high mutation burden
Presenter: Yuan-Sheng Zang
Session: Poster display session
Resources:
Abstract