Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

01 October 2016 : Laboratory Research  

Long Non-Coding RNA (LncRNA) Urothelial Carcinoma Associated 1 (UCA1) Increases Multi-Drug Resistance of Gastric Cancer via Downregulating miR-27b

Qun FangBCDEF, XiaoYan ChenCDEF, XuTing ZhiCDE

DOI: 10.12659/MSM.900688

Med Sci Monit 2016; 22:3506-3513

Abstract

BACKGROUND: In this study, we aimed to investigate the association between UCA1 and miR-27b in gastric cancer and further study their involvement in multi-drug resistance (MDR) of gastric cancer.

MATERIAL AND METHODS: The microarray data of dysregulated lncRNAs in gastric cancer tissues was retrieved in the GEO dataset. QRT-PCR analysis was performed to assess UCA1 expression based on 28 paired cancerous and peritumoral normal tissues. The human gastric cancer cell line SGC-7901, and SGC-7901 derived Adriamycin (doxorubicin) resistant SGC-7901/ADR, cisplatin resistant SGC-7901/DDP, and 5-FU resistant SGC-7901/FU cells were used as in vitro cell models to assess the effect of UCA1 and miR-27b on MDR.

RESULTS: UCA1 was significantly upregulated in the cancerous tissues and its expression was negatively correlated with miR-27b expression level. Inhibition of UCA1 significantly restored miR-27b expression in MDR gastric cancer cells. UCA1 knockdown and miR-27b overexpression reduced IC50 of ADR, DDP, and 5-FU in SGC-7901/ADR cells and increased ADR induced cell apoptosis. UCA1 overexpression and miR-27b inhibition increased the IC50 of ADR, DDP, and 5-FU in SGC-7901 cells and reduced ADR induced cell apoptosis. Western blot analysis showed that UCA1 knockdown and miR-27b overexpression also decreased anti-apoptotic protein BCL-2 and increased apoptotic protein cleaved caspase-3.

CONCLUSIONS: UCA1 is negatively correlated with miR-27b expression in gastric cancer tissue. Knockdown of UCA1 restored miR-27b expression in gastric cancer cells. The UCA1-miR-27b axis was involved in regulation of chemosensitivity of gastric cancer cells.

Keywords: Genes, MDR, Stomach Neoplasms

Comments

Editorial

01 January 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Patients

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

SARS-CoV-2/COVID-19

25 January 2022 : Editorial  

Editorial: The 2022 World Health Organization (WHO) Priority Recommendations and Response to the Omicron Va...

Med Sci Monit In Press; DOI: 10.12659/MSM.936199  

25 January 2022 : Clinical Research  

Experience of the Polish Medical Air Rescue Service During the First Year of the COVID-19 Pandemic and Meas...

Med Sci Monit In Press; DOI: 10.12659/MSM.935474  

11 January 2022 : Clinical Research  

A Remote Questionnaire-Based Study to Compare Alcohol Use in 1030 Final-Year High School Students in Split-...

Med Sci Monit In Press; DOI: 10.12659/MSM.935567  

31 December 2021 : Clinical Research  

A Prospective Observational Study of 42 Patients with COVID-19 infection and a History of Hepatitis C Virus...

Med Sci Monit 2021; 27:e935075

In Press

28 Jan 2022 : Database Analysis  

Evaluation of Structural Neural Connectivity Between the Primary Auditory Cortex and Cognition-Related Brai...

Med Sci Monit In Press; DOI: 10.12659/MSM.936131  

27 Jan 2022 : Clinical Research  

Retrospective Study of the Association Between Platelet-to-Lymphocyte Ratio in Patients with Acute Coronary...

Med Sci Monit In Press; DOI: 10.12659/MSM.935002  

25 Jan 2022 : Editorial  

Editorial: The 2022 World Health Organization (WHO) Priority Recommendations and Response to the Omicron Va...

Med Sci Monit In Press; DOI: 10.12659/MSM.936199  

25 Jan 2022 : Clinical Research  

Experience of the Polish Medical Air Rescue Service During the First Year of the COVID-19 Pandemic and Meas...

Med Sci Monit In Press; DOI: 10.12659/MSM.935474  

Most Viewed Current Articles

30 Dec 2021 : Clinical Research  

Retrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...

DOI :10.12659/MSM.935379

Med Sci Monit 2021; 27:e935379

01 Jan 2022 : Editorial  

Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...

DOI :10.12659/MSM.935952

Med Sci Monit 2022; 28:e935952

01 Nov 2020 : Review article  

Long-Term Respiratory and Neurological Sequelae of COVID-19

DOI :10.12659/MSM.928996

Med Sci Monit 2020; 26:e928996

05 Mar 2020 : Clinical Research  

The Effects of Social Support on Sleep Quality of Medical Staff Treating Patients with Coronavirus Disease ...

DOI :10.12659/MSM.923549

Med Sci Monit 2020; 26:e923549

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750