Research Papers:

Inhibition of IAP’s and activation of p53 leads to caspase-dependent apoptosis in gastric cancer cells treated with Scutellarein

Venu Venkatarame Gowda Saralamma, Ho Jeong Lee, Suchismita Raha, Won Sup Lee, Eun Hee Kim, Sang Joon Lee, Jeong Doo Heo _, Chungkil Won, Chang Keun Kang and Gon Sup Kim

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Oncotarget. 2018; 9:5993-6006. https://doi.org/10.18632/oncotarget.23202

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Venu Venkatarame Gowda Saralamma1, Ho Jeong Lee1, Suchismita Raha1, Won Sup Lee2, Eun Hee Kim3, Sang Joon Lee4, Jeong Doo Heo4, Chungkil Won5, Chang Keun Kang5 and Gon Sup Kim1

1Research Institute of Life Science and College of Veterinary Medicine, Gyeongsang National University, Gazwa, Jinju, Republic Korea

2Department of Internal Medicine, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, South Korea

3Department of Nursing Science, International University of Korea, Jinju, Republic of Korea

4Gyeongnam Biological Resource Research Center, Korea Institute of Toxicology, Jinju, Gyeongsangnam 666-844, Republic of Korea

5Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea

Correspondence to:

Jeong Doo Heo, email: [email protected]

Gon Sup Kim, email: [email protected]

Keywords: apoptosis; gastric cancer; scutellarein; p53; IAPs

Received: May 17, 2017     Accepted: November 13, 2017     Published: December 11, 2017


Gastric cancer is the fifth most common cancer and the third leading cause of cancer deaths worldwide. South Korea is in first place with 9,180 death alone attributed to gastric cancer in 2013. Plenty of literature suggests the evasion of apoptosis is implicated in neurodegeneration, autoimmune diseases, and tumors development due to dysregulation in the apoptotic mechanism. Reduced apoptosis or its resistance in cancer cells plays a significant role in carcinogenesis. It’s imperative to understand apoptosis, which provides the basis for novel targeted therapies that can induce cancer cell death or sensitize them to cytotoxic agents by regulating key factors like IAPs, MDM2, p53, caspases and much more. Studies have demonstrated that Scutellarein have the ability to inhibit several cancer cells by inducing apoptosis with both: Scutellarein monomers as well as scutellarein containing flavonoids. MTT results revealed that scutellarein inhibited cell viability in both dose and time dependent manner. Flow cytometry and western blot analysis showed that scutellarein induces apoptosis in both AGS and SNU-484 human gastric cancer cells and G2/M phase cell cycle arrest in SNU-484 cells. This study demonstrated that the Scutellarein on AGS and SNU-484 cells significantly inhibits cell proliferation and induces apoptotic cell death via down regulating MDM2 and activated the tumor suppresser protein p53, subsequently down regulating the IAP family proteins (cIAP1, cIAP2, and XIAP) leading to caspase-dependent apoptosis in AGS and SNU-484 cells.

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