The present data described the analysis of mutagenicity in Synacinn by assessing the point mutations occurring due to Synacinn™ exposure to five tester strains of (TA1537, TA1535, TA98, TA100 and TA102), in the presence or absence of an exogenous mammalian metabolic activation system (S9). It was conducted in two Phases - Phase I (Dose Range Finding experiment-DRF) and Phase II (Mutagenicity Assay 1 and 2). DRF and Mutagenicity Assay 1 was conducted employing plate incorporation method, while Mutagenicity Assay 2 was performed using pre-incubation method. Formulation analysis pertaining to Synacinn was performed for both Mutagenicity Assay 1 and 2. Dose formulations were prepared fresh on each day of the experiment. Adventol 50% v/v in purified water was selected as a suitable vehicle based on the preliminary solubility test. Based on the Phase I analysis, 5 mg/plate was selected as the highest concentration of Synacinn followed by lower concentrations of 2.5, 1.25, 0.625 and 0.313 mg/plate for the Mutagenicity Assays. Genetic integrity of all the tester strains used was confirmed by performing genotyping before their use. All the data acceptability criteria were fulfilled confirming the validity of the test.
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http://dx.doi.org/10.1016/j.dib.2021.107075 | DOI Listing |
Methods Protoc
January 2025
Dipartimento di Scienze, Università degli Studi "Roma Tre", 00146 Rome, Italy.
The micronucleus test is one of the most popular genotoxicity assays. In order to avoid underestimation of micronuclei frequencies by counting non-replicating cells, the cytokinesis-blocked micronucleus test has been developed. In this technique, only binucleated cells are scored.
View Article and Find Full Text PDFJ Biochem Mol Toxicol
February 2025
Department of Gastroenterology, The Second Hospital of Heilongjiang Province, Harbin City, Heilongjiang Province, China.
Colorectal cancer (CRC) represents a significant global health challenge, with approximately 1.8 million new cases diagnosed annually and a mortality toll exceeding 881,000 lives each year. This study aimed to evaluate the chemoprotective efficacy of Cyanidin-3-glucoside (C3G) in a rat model of CRC induced by 1,2-dimethylhydrazine (DMH).
View Article and Find Full Text PDFNat Commun
January 2025
Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA.
Biogenesis of human telomerase requires its RNA subunit (hTR) to fold into a multi-domain architecture that includes the template-pseudoknot (t/PK) and the three-way junction (CR4/5). These hTR domains bind the telomerase reverse transcriptase (hTERT) protein and are essential for telomerase activity. Here, we probe hTR structure in living cells using dimethyl sulfate mutational profiling with sequencing (DMS-MaPseq) and ensemble deconvolution analysis.
View Article and Find Full Text PDFJ Environ Radioact
January 2025
Plant Breeding and Genetics Sub-programme, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre, P.O. Box 100, 1400, Vienna, Austria.
Groundnut (Arachis hypogaea L.) is a popular nutritious food crop in the world. In Namibia, groundnut varieties are limited and characterized by low yields of 0.
View Article and Find Full Text PDFDiscov Immunol
December 2024
Laboratory of Functional Genomics and Medicine, Division of Biological Science, Nara Institute of Science and Technology (NAIST), Ikoma-shi, Nara, Japan.
Introduction: Programmed death-1 (PD-1) is a negative regulator of immune responses. Upon deletion of PD-1 in mice, symptoms of autoimmunity developed only after they got old. In a model experiment in cancer immunotherapy, PD-1 was shown to prevent cytotoxic T lymphocytes from attacking cancer cells that expressed neoantigens derived from genome mutations.
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