28 January 2018 : Laboratory Research
Usnic Acid Induces Cycle Arrest, Apoptosis, and Autophagy in Gastric Cancer Cells In Vitro and In VivoXiaoge Geng1ABCDEF, Xing Zhang1BDE, Bin Zhou1BDF, Chenjing Zhang2CE, Jiangfeng Tu2AC, Xiaojun Chen1AD, Jingya Wang3BC, Huiqin Gao4BC, Guangming Qin5CF, Wensheng Pan16ACG
Med Sci Monit 2018; 24: LBR556-566
BACKGROUND: Usnic acid (UA), a secondary metabolite, is mainly derived from certain lichen species. Growing evidence suggests that UA has antitumor, anti-oxidative, anti-inflammatory, and other activities in a variety of cancer cells. However, the antitumor effect of UA in gastric cancer cells (GC) is unclear. The aim of this investigation was to assess the antitumor effect of UA in GC cells in vitro and in vivo, and to explore the underlying mechanisms.
MATERIAL AND METHODS: Cell proliferation was measured by CCK8 assay, the arrest of cell cycle was assessed by flow cytometry, and cellular apoptosis was observed via Hoechst 33258 staining assay. Expression levels of apoptosis-related proteins (activated caspase-3 and PARP, Bax, Bcl2) and autophagy-associated proteins (LC3-II and p62) were verified through Western blot analysis. H&E staining and immunohistochemistry were carried out in the subcutaneously implanted BGC823 tumor model in a nude mouse experiment.
RESULTS: In vitro, we demonstrated that UA was significantly effective in inducing morphological changes, inhibiting the cell proliferation dose- and time-dependently, arresting the cell cycle phase, promoting cancer cellular apoptosis, and inducing autophagy activity. In vivo, compared to mice treated with 5-FU alone, UA treatment was significantly more effective in suppressing the tumor growth without affecting body weight, and in regulating the amount of Bax and Bcl2 in tumor tissues.
CONCLUSIONS: UA induces cell cycle arrest and autophagy and exerts anti-proliferative and apoptotic eﬀects by modulating expression of apoptosis-related proteins in stomach neoplasm cells, and has a better antitumor effect compared to 5-Fu in the xenograft model.
Keywords: Stomach Neoplasms, Usnea
12 September 2022 : EditorialEditorial: Treatment with Dual Incretin Receptor Agonists to Maintain Normal Glucose Levels May Also Maintain Normal Weight and Control Metabolic Dysfunction-Associated Fatty Liver Disease (MAFLD)
Med Sci Monit 2022; 28:e938365
16 September 2022 : Review articleEffects of Physiotherapy on Rehabilitation and Quality of Life in Patients Hospitalized for COVID-19: A Rev...
Med Sci Monit In Press; DOI: 10.12659/MSM.938141
12 September 2022 : Clinical ResearchEffect of Vitamin D Concentration on Course of COVID-19
Med Sci Monit In Press; DOI: 10.12659/MSM.937741
29 August 2022 : Database AnalysisTranscriptome Analysis of Peripheral Blood Mononuclear Cells Response in Patients with Severe COVID-19 Reve...
Med Sci Monit 2022; 28:e937532
23 Sep 2022 : Review articleA Review of the Role of Ultrasound Radiomics and Its Application and Limitations in the Investigation of Th...
Med Sci Monit In Press; DOI: 10.12659/MSM.937738
23 Sep 2022 : Review articleReview of the Long-Term Outcomes of Guided Bone Regeneration and Autologous Bone Block Augmentation for Ver...
Med Sci Monit In Press; DOI: 10.12659/MSM.937433
22 Sep 2022 : Clinical ResearchComparison of Incremental Shuttle Walking Test, 6-Minute Walking Test, and Cardiopulmonary Exercise Stress ...
Med Sci Monit In Press; DOI: 10.12659/MSM.938140
Most Viewed Current Articles
30 Dec 2021 : Clinical ResearchRetrospective Study of Outcomes and Hospitalization Rates of Patients in Italy with a Confirmed Diagnosis o...
Med Sci Monit 2021; 27:e935379
13 Nov 2021 : Clinical ResearchAcceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...
Med Sci Monit 2021; 27:e932788
08 Mar 2022 : Review articleA Review of the Potential Roles of Antioxidant and Anti-Inflammatory Pharmacological Approaches for the Man...
Med Sci Monit 2022; 28:e936292