Ticagrelor inhibits platelet-tumor cell interactions and metastasis in human and murine breast cancer.

We examined the potential of the reversible P2Y12 inhibitor ticagrelor, an agent used clinically to prevent cardiovascular and cerebrovascular events, to reduce tumor growth and metastasis. In vitro, MCF-7, MDA-MB-468, and MDA-MB-231 human mammary carcinoma cells exhibited decreased interaction with platelets treated with ticagrelor compared to untreated platelets. Prevention of tumor cell-platelet interactions through pretreatment of platelets with ticagrelor did not improve natural killer cell-mediated tumor cell killing of K562 myelogenous leukemia target cells. Additionally, ticagrelor had no effect on proliferation of 4T1 mouse mammary carcinoma cells co-cultured with platelets, or on primary 4T1 tumor growth. In an orthotopic 4T1 breast cancer model, ticagrelor (10 mg/kg), but not clopidogrel (10 mg/kg) or saline, resulted in reduced metastasis and improved survival. Ticagrelor treatment was associated with a marked reduction in tumor cell-platelet aggregates in the lungs at 10, 30 and 60 min post-intravenous inoculation. These findings suggest a role for P2Y12-mediated platelet activation in promoting metastasis, and provide support for the use of ticagrelor in the prevention of breast cancer spread. PMID: 29322294 [PubMed - as supplied by publisher]
Source: Clinical Breast Cancer - Category: Cancer & Oncology Authors: Tags: Clin Exp Metastasis Source Type: research

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Authors: Cui Z, Li H, Liang F, Mu C, Mu Y, Zhang X, Liu J Abstract WD repeat domain 5 (WDR5) serves an important role in various biological functions through the epigenetic regulation of gene transcription. Aberrant expression of WDR5 has been observed in various types of human cancer, including prostate cancer, breast cancer and leukemia. However, the role of WDR5 expression and its clinical implications in hepatocellular carcinoma (HCC) remain largely unknown. The present study investigated the WDR5 expression pattern in HCC. It was demonstrated that the mRNA and protein levels of WDR5 were upregulated in HCC can...
Source: Oncology Letters - Category: Cancer & Oncology Tags: Oncol Lett Source Type: research
Abstract Two new sphingofungins G (1) and H (2) with a five-membered lactone ring were identified from the solid-state fermentation of Aspergillus penicilliodes Speg., a dominant microorganism isolated previously from the post-fermentation of ripe Pu-er tea, together with six known metabolites. Their structures were elucidated by extensive spectroscopic methods. All of them were isolated from the mycelia culture of A. penicilliodes for the first time. The known compound, trypacidin, exhibited potent cytotoxities against five human cancer cell lines, e.g. myeloid leukemia HL-60, lung cancer A-549, hepatocellular ca...
Source: Natural Product Research - Category: Biochemistry Authors: Tags: Nat Prod Res Source Type: research
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Source: Inflammopharmacology - Category: Drugs & Pharmacology Source Type: research
CONCLUSIONS: Life-span exposures to continuous and intermittent sinusoidal-50 Hz ELFEMFs, when administered alone, did not represent a significant risk factor for neoplastic development in our experimental rat model. In light of our previous results on the carcinogenic effects of ELFEMF in combination with formaldehyde and γ-radiation, further experiments are necessary to elucidate the possible role of ELFEMF as cancer enhancer in presence of other chemical and physical carcinogens. PMID: 29549848 [PubMed - as supplied by publisher]
Source: Environmental Research - Category: Environmental Health Authors: Tags: Environ Res Source Type: research
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Source: Specified Life - Category: Information Technology Tags: cancer cancer vaccines precision medicine prevention public health Source Type: blogs
CONCLUSION Cognitive impairment can affect daily functioning, quality of life, and capacity to work in patients with cancer and those in remission. Consequently, cognitive assessment is now an important and necessary part of a comprehensive oncological care plan. Cancer-related cognitive impairment might be due to the direct effects of the cancer itself, nonspecific factors, or comorbid conditions that are independent of the disease and/or due to the adverse effects of the treatment or combination of treatments given for the disease. The prevalence and extent of cognitive impairment associated with cancer is recognized but...
Source: Innovations in Clinical Neuroscience - Category: Neuroscience Authors: Tags: Cognition Current Issue Neuro oncology Neurology Review cancer chemotherapy cognitive impairment neuropsychological assessment treatment Source Type: research
We examined the potential of the reversible P2Y12 inhibitor ticagrelor, an agent used clinically to prevent cardiovascular and cerebrovascular events, to reduce tumor growth and metastasis. In vitro, MCF-7, MDA-MB-468, and MDA-MB-231 human mammary carcinoma cells exhibited decreased interaction with platelets treated with ticagrelor compared to untreated platelets. Prevention of tumor cell –platelet interactions through pretreatment of platelets with ticagrelor did not improve natural killer cell-mediated tumor cell killing of K562 myelogenous leukemia target cells. Additionally, ticagrelor had no effect on prolifera...
Source: Clinical and Experimental Metastasis - Category: Cancer & Oncology Source Type: research
Purpose of review Germline pathogenic TP53 mutation may predispose to multiple cancers but penetrance and cancer patterns remain incompletely documented. We have analyzed international agency for research on cancer TP53 database to reevaluate age and variant-dependent tumor patterns. Recent findings Genome-wide studies suggest that germline variants are more frequent than estimated prevalence of Li–Fraumeni syndrome (LFS), suggesting that many carriers of potentially pathogenic mutations may not develop the syndrome. Carriers of a germline TP53 mutation who are detected in a clinical context have a penetrance of...
Source: Current Opinion in Oncology - Category: Cancer & Oncology Tags: CANCER BIOLOGY: Edited by Pierre Hainaut Source Type: research
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Source: The American Journal of the Medical Sciences - Category: General Medicine Authors: Tags: Am J Med Sci Source Type: research
Purpose of review Germline pathogenic TP53 mutation may predispose to multiple cancers but penetrance and cancer patterns remain incompletely documented. We have analyzed international agency for research on cancer TP53 database to reevaluate age and variant-dependent tumor patterns. Recent findings Genome-wide studies suggest that germline variants are more frequent than estimated prevalence of Li–Fraumeni syndrome (LFS), suggesting that many carriers of potentially pathogenic mutations may not develop the syndrome. Carriers of a germline TP53 mutation who are detected in a clinical context have a penetrance of...
Source: Current Opinion in Oncology - Category: Cancer & Oncology Tags: CANCER BIOLOGY: Edited by Pierre Hainaut Source Type: research
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