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05 December 2017 : Laboratory Research  

Emodin Impairs Radioresistance of Human Osteosarcoma Cells by Suppressing Sonic Hedgehog Signaling

Wei Qu12ADE, Yufei Wang3BDE, Qining Wu2ADF, Dingjun Hao2CDG*, Dichen Li45ADG

DOI: 10.12659/MSM.907453

Med Sci Monit 2017; 23:5767-5773


BACKGROUND: This study aimed to investigate the possible involvement of sonic hedgehog (Shh) signaling in the radioresistance of human osteosarcoma cells and the inhibitory effects of emodin on radioresistance.

MATERIAL AND METHODS: Human osteosarcoma (OS) cell line MG63 was employed as parent cells. After 30-repeat low-dose (2 Gy) x-ray irradiation on MG63 cells, radioresistant OS cell MG63R cells were produced. Colony formation assay was used to assess the radioresistance. Cell viability was evaluated by CCK-8 assay. TUNEL assay was used to detect cell apoptosis. Protein expression levels and nuclear translocation were evaluated by western blotting.

RESULTS: More survival colony formation, elevated cell viability, and less cell apoptosis were found in MG63R cells compared to MG63 cells exposed to irradiation. The nuclear translocation of glioma-associated oncogene homolog (Gli), expression levels of Shh and Bcl2 were increased in MG63R cells compared to MG63 cells. Emodin pretreatment significantly inhibited cell viability and survival colony formation but increased cell apoptosis of irradiation exposed MG63R cells in a concentration dependent manner. Moreover, emodin pretreatment inhibited Shh and Bcl2 expressions as well as Gli1 nuclear translocation but increased C-caspase-3 expression of irradiation exposed MG63R cells in a concentration dependent manner.

CONCLUSIONS: Shh signaling activation was involved in the radioresistance of human OS cells. Emodin impaired the radioresistant capacity of OS cells by inhibiting Shh signaling pathway.

Keywords: Emodin, Radiotherapy, Adjuvant



01 October 2022 : Editorial  

Editorial: Rebound COVID-19 and Cessation of Antiviral Treatment for SARS-CoV-2 with Paxlovid and Molnupiravir

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.938532

Med Sci Monit 2022; 28:e938532


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Med Sci Monit 2022; 28:e937741

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30 Sep 2022 : Clinical Research  

Correlation Between Trough Level of Abiraterone and Prostate-Specific Antigen (PSA) Response in Metastatic ...

Med Sci Monit In Press; DOI: 10.12659/MSM.938091  

30 Sep 2022 : Review article  

A Review of the Biological Mechanisms of Dexmedetomidine for Postoperative Neurocognitive Disorders

Med Sci Monit In Press; DOI: 10.12659/MSM.937862  

29 Sep 2022 : Animal Research  

Effect of Antilogous Platelet-Rich Plasma on the Revascularization of Rabbit Prefabricated Flap

Med Sci Monit In Press; DOI: 10.12659/MSM.937718  

26 Sep 2022 : Clinical Research  

Distribution and Determinants of Plasma Homocysteine Levels in a Preconception Population: A Retrospective ...

Med Sci Monit In Press; DOI: 10.12659/MSM.937987  

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750