- Adipose Tissue-Derived Stem Cells
- Human Neurons
- Mouse Probe
- Whole Chromosome Painting Probes
- Hepatic Cells
- Renal Cells
- In Vitro ADME Kits
- Tissue Microarray
- Tissue Blocks
- Tissue Sections
- FFPE Cell Pellet
- Probe
- Centromere Probes
- Telomere Probes
- Satellite Enumeration Probes
- Subtelomere Specific Probes
- Bacterial Probes
- ISH/FISH Probes
- Exosome Isolation Kit
- Human Adult Stem Cells
- Mouse Stem Cells
- iPSCs
- Mouse Embryonic Stem Cells
- iPSC Differentiation Kits
- Mesenchymal Stem Cells
- Immortalized Human Cells
- Immortalized Murine Cells
- Cell Immortalization Kit
- Adipose Cells
- Cardiac Cells
- Dermal Cells
- Epidermal Cells
- Peripheral Blood Mononuclear Cells
- Umbilical Cord Cells
- Monkey Primary Cells
- Mouse Primary Cells
- Breast Tumor Cells
- Colorectal Tumor Cells
- Esophageal Tumor Cells
- Lung Tumor Cells
- Leukemia/Lymphoma/Myeloma Cells
- Ovarian Tumor Cells
- Pancreatic Tumor Cells
- Mouse Tumor Cells
Our Promise to You
Guaranteed product quality, expert customer support
Exploring Cytotoxic mRNAs as a Novel Class of Anti-cancer Biotherapeutics
PMID:29687033
Abstract
BACKGROUND: New treatments to overcome the obstacles of conventional anti-cancer therapy are a permanent subject of investigation. One promising approach is the application of toxins linked to cell-specific ligands, so-called immunotoxins. Another attractive option is the employment of toxin-encoding plasmids. However, immunotoxins cause hepatoxicity, and DNA therapeutics, among other disadvantages, bear the risk of insertional mutagenesis. As an alternative, this study examined chemically modified mRNAs coding for diphtheria toxin, subtilase cytotoxin, and abrin-a for their ability to reduce cancer cell growth both in vitro and in vivo.
METHODS: The plant toxin abrin-a was the most promising candidate among the three tested toxins and was further investigated. Its expression was demonstrated by western blot.
RESULTS: Experiments with firefly luciferase in reticulocyte lysates and co-transfection experiments with EGFP demonstrated the capability of abrin-a to inhibit protein synthesis. Its cytotoxic effect was quantified employing viability assays and propidium iodide staining. By studying caspase-3/7 activation, Annexin V-binding, and chromatin condensation with Hoechst33258 staining, apoptotic cell death could be confirmed. In mice, repeated intratumoral injections of complexed abrin-a mRNA resulted in a significant reduction (89%) of KB tumor size compared to a non-translatable control mRNA.