fadu

TRi-1 是不可逆的胞质硫氧还蛋白还原酶1 的特异性抑制剂(IC50:12 nM)。它有抗肿瘤作用，且线粒体毒性很小。

Se-Methylselenocysteine (Se-MSC) 是具有口服活性的甲基硒前体，具有强大的抗氧化活性和抗癌活性。Se-Methylselenocysteine 可诱导细胞凋亡。

Capsaicin ((E)-Capsaicin) 属于天然产物，提取自辣椒，是一种 TRPV1 激动剂 (EC50=0.29 μM)。Capsaicin 具有抗肿瘤、抗炎、抗氧化、神经保护等活性。

Tamoxifen (ICI47699) 是一种雌激素受体调节剂 (SERM)，具有选择性和口服有效性。Tamoxifen 对雌激素具有抑制活性 (如乳腺细胞) 和激活活性 (如骨、肝和子宫细胞)。

PROTAC 20S roteasome subunit β5 degrader 2 是专门针对20S蛋白酶体亚基 β5 (20Sproteasomesubunit β5) 的 PROTAC 降解剂，具有 DC50 值为 0.16 μM。此化合物在抑制 FaDu 癌细胞增殖方面表现出效力，其 IC50 为 0.23 μM。此外，PROTAC20Sproteasomesubunit β5 degrader 2 在小鼠模型中也显示出显著的抗肿瘤活性。

PROTAC 20S proteasomesubunit β5 degrader 1 (compound 12f)，一种针对20S蛋白酶体亚基β5的靶向降解剂，在FaDu细胞中表现出0.11 μM的DC50值。此化合物能在FaDu和KM3 BTZ细胞中干扰细胞周期，促进细胞凋亡(apoptosis)，并有效抑制细胞的增殖与迁移。此外，PROTAC 20S proteasomesubunit β5 degrader 1 还可用于研究咽癌和多发性骨髓瘤中对Bortezomib的耐药性。

Pepsin is an endopeptidase that breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine[1]. Pepsin is stable at pH ranges as high as pH 6. Above this pH, pepsin is rapidly irreversibly inactivated and elevation of pH of the reaction mixture to pH 8 results in complete inactivation of pepsin[2]. Pepsin has been posited to be a reliable biological marker of EER. An immunologic pepsin assay of combined sputum and saliva was determined to be 100% sensitive and 89% specific for detection of EER (based on pH-metry), and an enzymatic test of nasal lavage fluid (100% sensitivity and 92.5% specificity) demonstrated an increased incidence of EER in patients with chronic rhinosinusitis[3]. Cultured hypopharyngeal epithelial (FaDu) cells were exposed to human pepsin (0.1 mg mL) at pH 7.4 for either 1 hour or 12 hours at 37°C and both mitochondria and Golgi complexes were clearly damaged. This finding reveals a novel mechanism by which pepsin could cause cell damage, potentially even in nonacidic refluxate[4].

5-Hydroxyflavone 是类黄酮配体，对 FaDU，MCF-7，U87，MDA-MB-435S，RPE-1 和 HEK293 细胞没有细胞毒性。

Epiberberine chloride 是一种来自Coptis chinensis Franch.的天然原小檗碱，是 AChE、 BChE 和 BACE1 抑制剂，IC50 值分别为 1.07，6.03 和 8.55 μM。Epiberberine chloride 具有抗氧化作用，抑制Ca9-22和FaDu细胞系的运动，可用于研究高脂血症、阿尔滋海默症和糖尿病。