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Cobalt Chloride, a Chemical Hypoxic Agent, Activates Erk Kinase Through the Epidermal Growth Factor Receptor in Oral Squamous Cell Carcinoma Cells
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¹ÚÁ¤Èñ ( Park Jeong Hee ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°º´¸®Çб³½Ç
¹ÚÇý·Ã ( Park Hae-Ryoun ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°º´¸®Çб³½Ç
¹ÚºÀ¼ö ( Park Bong-Soo ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°ÇغÎÇб³½Ç
¹ÚÁöÀº ( Park Ji-Eun ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°º´¸®Çб³½Ç
Á¤Áø ( Chung Jin ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°º´¸®Çб³½Ç
À¯¹ÌÇö ( Ryu Mi-Heon ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°º´¸®Çб³½Ç
KMID : 0829220090330020069
Abstract
Tumor cells under hypoxic conditions are often found due to the rapid outgrowth of their vascular supply, and,in order to survive hypoxia, these cells induce numerous signaling factors. Erk is an important kinase in cell survival, and its activity is regulated by Raf kinases through numerous growth factor receptors. The authors investigated Erk activation and Raf/Erk signaling using the hypoxia-mimetic agent, cobalt chloride (CoCl2), in oral squamous cell carcinoma (OSCC) cells. CoCl2 increases Erk phosphorylation in both a dose- and time-dependent manner. In addition, blocking the activation of epidermal growth factor receptor (EGFR) using PD168393 abolished Erk activation in response to CoCl2, suggesting that Erk phosphorylation by CoCl2 is dependent on EGFR.
Å°¿öµå
Hypoxia;Cobalt chloride;PI3K/Akt;PDK1;PTEN;EGFR;Erk;Raf-1;Oral squamous cell carcinoma
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