| Description | Theaflavin is a polyphenolic flavonoid that has been found in black tea and has diverse biological activities, including antioxidant, anticancer, anti-inflammatory, and antiviral properties |
| In vitro | Theaflavin 抑制OVCAR-3 和 A2780/CP70 人类卵巢癌细胞系的生长，但对卵巢上皮细胞系IOSE 364 不产生抑制作用（IC50 分别为11.9、38.5 和 >40 μM）[1]。 |
| In vivo | In the pretreated ICH rats TF significantly alleviated the behavioral defects, protected BBB integrity, and decreased the formation of cerebral edema and the levels of ROS as well as inflammatory cytokines (including interleukin-1 beta [IL-1β], IL-18, tumor nectosis factor-alpha, interferon-γ, transforming growth factor beta, and (C-X-C motif) ligand 1 [CXCL1]).?Nissl staining and TUNEL displayed TF could protect against the neuron loss and apoptosis via inhibiting the activation of nuclear transcription factor kappa-β-p65 (NF-κβ-p65), caspase-1, and IL-1β[2]. |
| Cell experiments | Cell proliferation assay, Hoechst 33342 staining assay, Caspase-Glo Assay, western blot, human umbilical vein endothelial cell tube formation assay and vascular endothelial growth factor (VEGF) enzyme-linked immunosorbent assay were performed[1]. |
| Animal experiments | ICH rat models were induced with type VII collagenase and pretreated with TF by gavage in different doses (25 mg/kg-100 mg/kg).?Twenty-four hours after ICH attack, evaluated the rats' behavioral performance, the blood-brain barrier (BBB) integrity, and the formation of cerebral edema.?The levels of reactive oxygen species (ROS) and inflammatory cytokines were examined by 2',7'-dichlorofluorescin diacetate and enzyme-linked immunosorbent assay.?Nissl staining and transferase dUTP nick end labeling (TUNEL) were aimed to detect the neuron loss and apoptosis, the mechanism of which was explored by Western blot[2]. |
| molecular weight | 564.49 |
| Molecular formula | C29H24O12 |
| CAS | 4670-05-7 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 5.65 mg/mL (10 mM), Sonication is recommended. |
| References | 1. Gao Y , Rankin G O , Youying T U , et al. Inhibitory Effects of the Four Main Theaflavin Derivatives Found in Black Tea on Ovarian Cancer Cells[J]. Anticancer research, 2016, 36(2):643-651. 2. Guanglei F , Hua W , Youli C , et al. Theaflavin alleviates inflammatory response and brain injury induced by cerebral hemorrhage via inhibiting the nuclear transcription factor kappa β-related pathway in rats[J]. Drug Design, Development and Therapy, 2018, Volume 12:1609-1619. 3. Juarez-Mercado K E, Prieto-Martinez F D, Sanchez-Cruz N, et al. DNA Methyltransferase Inhibitors with Novel Chemical Scaffolds[J]. bioRxiv. 2020 4. Juárez-Mercado K E, Prieto-Martínez F D, Sánchez-Cruz N, et al. Expanding the Structural Diversity of DNA Methyltransferase Inhibitors[J]. Pharmaceuticals. 2021, 14(1): 17. |