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Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies
Published on: September 15, 2023
Hsa-miR-30a-3p attenuates gastric adenocarcinoma proliferation and metastasis via APBB2
Kun Zhou1, Dachun Cao1, Yu Wang1
1Department of Gastroenterology, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
Background:
There is a well-established relationship between cell cycle progression and the development of stomach adenocarcinoma. This study aimed to elucidate the molecular mechanism and biological function of APBB2 in gastric cancer.
Methods:
Gastric adenocarcinoma (GA) data were downloaded from the TCGA-GA and GEO databases and analyzed to explore differentially expressed miRNAs and mRNAs. Moreover, potential target mRNAs were also predicted. The relative level of gene and protein expression in GA cell lines and gastric mucosa cells was detected by q-PCR and Western blot, respectively. Moreover, the influence of APBB2 on proliferation, metastasis, and cell cycle changes in SGC-7901 and BGC-823 cells was evaluated. The binding relationship between the target miRNA and mRNA was confirmed with a dual-luciferase reporter assay.
Results:
High APBB2 expression was detected in GA patients, indicating that it may be represent a predictive biomarker for poor prognosis. Related experiments confirmed that APBB2 silencing inhibited GA cellular functions, including proliferation, cell cycle progression, migration, and invasion. In addition, to explore the molecular mechanism, our results indicated that the binding sites were located at hsa-mir-30a and the 3'-UTR of APBB2, suggesting that hsa-mir-30a can regulate the expression of APBB2. The biological functions of hsa-mir-30a were also evaluated. Hsa-mir-30a overexpression attenuated the proliferation and metastasis of cancer cells. In rescue experiments, hsa-mir-30a was confirmed to reverse the cell cycle promoting function associated with APBB2 overexpression.
Conclusion:
Our findings show that hsa-mir-30a can attenuate the development of GA by down-regulating APBB2 expression.
Insights
This study reveals that high APBB2 expression predicts poor prognosis in gastric adenocarcinoma (GA). Silencing APBB2 inhibits GA cell growth and metastasis, while hsa-mir-30a targets APBB2 to attenuate cancer development.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cell cycle progression is linked to stomach adenocarcinoma development.
- APBB2's role in gastric cancer (GC) requires elucidation.
- Investigating molecular mechanisms driving GC is crucial.
Purpose of the Study:
- To explore the molecular mechanism and biological function of APBB2 in gastric cancer.
- To identify potential biomarkers for GC prognosis.
- To understand the regulatory role of miRNAs in GC.
Main Methods:
- Analysis of TCGA-GA and GEO databases for differentially expressed miRNAs and mRNAs.
- Quantitative PCR (q-PCR) and Western blot to detect gene and protein expression.
- Dual-luciferase reporter assay to confirm miRNA-mRNA binding.
Main Results:
- High APBB2 expression correlates with poor prognosis in gastric adenocarcinoma (GA).
- APBB2 silencing inhibited GA cell proliferation, migration, and invasion.
- hsa-mir-30a was identified as a regulator of APBB2, attenuating GA cell proliferation and metastasis.
Conclusions:
- hsa-mir-30a suppresses GA development by down-regulating APBB2 expression.
- APBB2 may serve as a predictive biomarker for poor prognosis in GA.
- Targeting the hsa-mir-30a/APBB2 axis offers a potential therapeutic strategy for GC.
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