Background: It has been speculated that clarithromycin (CAM), a 14-membered ring macrolide, possesses antitumor effects besides antimicrobial and anti-inflammatory effects.
Method: We evaluated the effects of CAM on the growth and invasiveness of A549 lung adenocarcinoma cells.
Results: Although CAM did not affect the growth of A549 cells, the Matrigel invasion assay showed that the potential of invasion was diminished by CAM treatment. When analyzed by flow cytometry, CAM suppressed alpha(2)- and beta(1)-integrin expression. Furthermore, thymidine phosphorylase (TP) expression was diminished by CAM treatment in a dose-dependent manner. A specific TP inhibitor also suppressed beta(1)-integrin expression in flow cytometric analysis.
Conclusions: These results suggest that CAM may suppress invasive activity of A549 cells in part by diminishing the expression of TP, alpha(2)- and beta(1)-integrin, which may be a downstream signal of the TP pathway, and that CAM could be useful in the treatment of lung adenocarcinoma.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000098426 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Negative prognostic significance of primary cilia and cytoplasmic β-catenin expression in non-small cell lung cancer.
Neoplasma
December 2024
Department of Oncology, First Faculty of Medicine, Charles University and Thomayer University Hospital, Prague, Czech Republic.
The objective of this study was to investigate the prognostic significance of the frequency of primary cilia (PC) and β-catenin expression in 218 patients (pts) with non-small cell lung cancer (NSCLC), including 125 pts with adenocarcinoma and 93 pts with squamous cell carcinoma. In the whole group of 218 pts with NSCLC, overall survival (OS) was significantly inferior among pts with present PC than without PC (p=0.024) and with higher cytoplasmic β-catenin expression (25-75%) than with lower cytoplasmic β-catenin expression (<25%) (p=0.
View Article and Find Full Text PDFMethylation status of selected genes in non-small cell lung carcinoma - current knowledge and future perspectives.
Neoplasma
December 2024
Department of Clinical and Molecular Pathology and Medical Genetics, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic.
DNA methylation is recognized as an early event in cancer initiation and progression. This review aimed to compare the methylation status of promoter regions in selected genes across different histological subtypes of non-small cell lung cancer (NSCLC), including adenocarcinoma, squamous cell carcinoma, large cell carcinoma, and the rare but highly aggressive large-cell neuroendocrine carcinoma (LCNEC). A comprehensive literature search was conducted in the PubMed database until August 17, 2024, using standardized keywords to identify reports on promoter methylation in NSCLC.
View Article and Find Full Text PDFArsenic-Induced Inflammatory Response via ROS-Dependent Activation of ERK/NF-kB Signaling Pathways: Protective Role of Natural Polyphenol Tannic Acid.
J Appl Toxicol
December 2024
Division of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, India.
Arsenic (As), a highly toxic metalloid, is present throughout our environment as a result of both natural and human-related activities. Furthermore, As exposure could lead to a persistent inflammatory response, which may facilitate the pathogenesis of several diseases in various organs. This study was performed to investigate the As-induced inflammatory response and the underlying molecular mechanisms in vitro.
View Article and Find Full Text PDFComprehensive bioinformatics analysis of prognosis and immunotherapy in lung adenocarcinoma.
J Thorac Dis
December 2024
Department of Respiratory and Critical Care Medicine, Jiangxi Provincial Key Laboratory of Respiratory Diseases, Jiangxi Institute of Respiratory Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
Background: Research has shown that genetic mutations play an important role in the prognosis of lung adenocarcinoma (LUAD). However, the genes that influence the prognosis and immunotherapy of lung cancer patients have not yet been thoroughly studied. In this study, data from The Cancer Genome Atlas (TCGA) Program and other databases were used to identify the survival-related genes in LUAD.
View Article and Find Full Text PDFClinicopathological and molecular features of lung cancers associated with cystic airspaces: an analysis of 34 cases.
J Thorac Dis
December 2024
Department of Thoracic Surgery, The Second Hospital of Dalian Medical University, Dalian, China.
Background: Lung cancer associated with cystic airspaces (LCCA) is a rare occurrence and frequently remains undetected in imaging tests. The diagnosis and treatment of this disease are often delayed due to the lack of comprehension. We aimed to clarify clinicopathological characteristics and investigate the molecular features of LCCA patients.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!