Min Fenghe, Liu Xin, Li Yuan, Dong Mingyuan, Qu Yidi, Liu Weiwei
Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, China.
Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun, China.
Front Oncol. 2021 Nov 26;11:760861. doi: 10.3389/fonc.2021.760861. eCollection 2021.
Oral squamous cell carcinoma (OSCC) predominantly consists of squamous cells and is the tumor with the highest incidence of the head and neck. Carnosic acid (CA), a natural monomer drug obtained from rosemary and salvia, shows various pharmacological effects, including of tumor development. This study aimed to assess for an effect of CA on the development of OSCC and the underlying mechanisms. In CAL27 and SCC9 cells, CA inhibited cell proliferation and migration, increased intracellular levels of reactive oxygen species (ROS) and Ca, decreased the mitochondrial membrane potential (MMP), and promoted apoptosis. In CAL27- and SCC9-xenotransplanted BALB/c nude mice, CA inhibited the tumor growth without affecting the body weight and tissue morphology. CA upregulated Bax, Bad, cleaved Caspase-3 and -9 levels, and the cleaved PARP1/PARP1 ratio but downregulated Bcl-2 in CA-treated OSCC cells and OSCC cells-xenotransplanted BALB/c nude mice. These results indicate that CA suppresses OSCC at least the mitochondrial apoptotic pathway and offers this natural compound as a potential therapeutic against OSCC.
口腔鳞状细胞癌(OSCC)主要由鳞状细胞组成,是头颈部发病率最高的肿瘤。迷迭香酸(CA)是一种从迷迭香和丹参中提取的天然单体药物,具有多种药理作用,包括对肿瘤发展的影响。本研究旨在评估CA对OSCC发展的影响及其潜在机制。在CAL27和SCC9细胞中,CA抑制细胞增殖和迁移,增加细胞内活性氧(ROS)和Ca水平,降低线粒体膜电位(MMP),并促进细胞凋亡。在CAL27和SCC9异种移植的BALB/c裸鼠中,CA抑制肿瘤生长,而不影响体重和组织形态。CA上调了经CA处理的OSCC细胞和OSCC细胞异种移植的BALB/c裸鼠中Bax、Bad、裂解的Caspase-3和-9水平以及裂解的PARP1/PARP1比率,但下调了Bcl-2。这些结果表明,CA至少通过线粒体凋亡途径抑制OSCC,并为这种天然化合物作为OSCC的潜在治疗药物提供了依据。