Sumalee Obchoei earned a B.Sc. in Medical Technology (Second Class Honors) and a Ph.D. in Medical Biochemistry from Khon Kaen University, Thailand. During her Ph.D., she was awarded the Royal Golden Jubilee Ph.D. program scholarship and interned at the Michel E. DeBakey Department of Surgery, Baylor College of Medicine, USA. Her doctoral research focused on the role of cyclophilin A and its receptor CD147 in the progression of cholangiocarcinoma. After completing her Ph.D., she gained further research experience through postdoctoral fellowships at Khon Kaen University (2012-2015) and Kyushu University, Japan (2015-2017). During her postdoctoral work, she advanced her studies on tumor progression and treatment using both in vitro and in vivo models. Since 2017, she has been a lecturer and researcher at the Department of Biochemistry, Faculty of Science, Prince of Songkla University, Thailand. Currently, she serves as an assistant professor at the same institution. Her research group has established drug-resistant cholangiocarcinoma cell lines, and she has been investigating the mechanisms of drug resistance and developing strategies to combat drug-resistant phenotypes in cancer cells.