Tropomyosin-1 (TPM1), a widely expressed actin-binding protein, is downregulated in many tumors and associated with cancer progression. A previous study from our group suggested that TPM1 could be involved in renal cell carcinoma (RCC) apoptosis, but the mechanisms and details remained unknown. The present study aimed to further examine the proapoptotic effects of TPM1 and investigate the underlying mechanisms in RCC cell lines. Results from cell viability, DAPI staining and apoptosis assays demonstrated that TPM1 upregulation inhibited cell proliferation and promoted cell apoptosis in both 786-O and ACHN RCC cell lines. However, TPM1 knockdown in the two RCC cell lines did not result in the opposite effects on cell proliferation or cell apoptosis. Comet assay and western blotting results demonstrated that TPM1 overexpression induced DNA damage and decreased the expression levels of the antiapoptotic factor BCL2 apoptosis regulator, while increasing the expression levels of the proapoptotic factors BCL2 associated X, Caspase-3 and p53 in 786-O and ACHN cells. The present findings suggest that TPM1 overexpression in RCC cell lines can induce tumor cell apoptosis via the p53-mediated mitochondrial pathway. Further studies are needed to fully elucidate the potential of TPM1 as a candidate for RCC targeted therapy in the future.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5921034 | PMC |
| http://dx.doi.org/10.3892/ol.2018.8204 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Temporal dynamics of PM induced cell death: Emphasizing inflammation as key mediator in the late stages of prolonged myocardial toxicity.
Exp Cell Res
January 2025
Cardiovascular Center, College of Medicine, University of Cincinnati, Ohio-45267, United States of America; School of Chemical and Biotechnology, SASTRA Deemed University, Tirumalaisamudram, Thanjavur-613401, Tamil Nadu, India. Electronic address:
Multiple forms of cell death contribute significantly to cardiovascular pathologies, negatively impacting cardiac remodeling and leading to heart failure. While myocardial cell death has been associated with PM induced cardiotoxicity, the temporal dynamics of various cell death forms, such as apoptosis, ferroptosis, necroptosis, and pyroptosis, in relation to inflammatory processes, remain underexplored. This study examines the time-dependent onset and progression of these cell death pathways in the myocardium and their correlation with inflammation in a Wistar rat model.
View Article and Find Full Text PDFDesigning an anticancer Pd(II) complex as poly(ADP-ribose) polymerase 1 inhibitor.
Int J Biol Macromol
January 2025
School of Biological and Food Engineering, Guangxi Science & Technology Normal University, Laibin, Guangxi 546199, China. Electronic address:
Targeting DNA repair mechanisms, particularly PARP-1 inhibition, has emerged as a promising strategy for developing anticancer therapies. we designed and synthesized two 2-thiazolecarboxaldehyde thiosemicarbazone palladium(II) complexes (C1 and C2), and evaluated their anti-cancer activities. These Pd(II) complexes exhibited potent PARP-1 enzyme inhibition and demonstrated considerable antiproliferative activity against various cancer cell lines.
View Article and Find Full Text PDFStructural characterization of complex tannins from Euryale ferox fruit peels and their inhibitory mechanisms against tyrosinase activity and melanogenesis.
Int J Biol Macromol
January 2025
College of Life Science, Yangtze University, Jingzhou, China. Electronic address:
Tyrosinase is a rate-limiting enzyme for melanogenesis and abnormal melanin production can be controlled by utilizing tyrosinase inhibitory substances. To develop potent and safe inhibitors of tyrosinase, complex tannins a narrowly distributed plant polyphenols were prepared from the fruit peel of Euryale ferox (EPTs) and then structurally characterized, as well as investigated for their inhibitory effects and the involved mechanisms against tyrosinase activity and melanogenesis. The structures of EPTs were established to consist of 63.
View Article and Find Full Text PDFA polysaccharide from Morchella esculenta mycelia: Structural characterization and protective effect on antioxidant stress on PC12 cells against HO-induced oxidative damage.
Int J Biol Macromol
January 2025
State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, PR China; State Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, PR China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China. Electronic address:
Morchella esculenta (L.) Pers. is considered a precious edible and medicinal fungus due to its strict growth environment requirements, difficult to cultivate, resulted in expensive in the market.
View Article and Find Full Text PDFProtein molecular structures of USP53, NPY2R, and DCTN1-AS1 and impact on tumors: Analysis of prognostic biomarkers for diffuse large B-cell lymphoma.
Int J Biol Macromol
January 2025
Department of Radiotherapy, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin, Heilongjiang 150081, China. Electronic address:
In the past few years, three protein molecules-USP53, NPY2R, and DCTN1-AS1-have garnered significant attention in scientific research due to their potential implications in tumor development. Mass spectrometry and proteomics techniques were used to analyze the three-dimensional structure of these protein molecules and predict their active sites and functional domains. The effects of USP53, NPY2R and DCTN1-AS1 on biological behavior of tumor cells were studied by constructing gene knockout and overexpression cell models.
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!