School of Engineering


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  • Razieh Khalifehzadeh

    Razieh Khalifehzadeh

    Postdoctoral Research Fellow, Chemical Engineering

    BioDr. Khalifehzadeh received a dual Ph.D. in Chemical Engineering and Nanotechnology & Molecular Engineering from the University of Washington (UW) in 2018. During her graduate studies in Prof. Buddy Ratner’s laboratory, she obtained fundamental training in biomaterials design, polymer chemistry, tissue-implant interactions and learned about FDA regulations and clinical translation process of medical devices. Her research was focused on development of new classes of degradable polymers for cardiovascular stents. Throughout her graduate study, she received multiple prestigious awards such as Pre-doctoral Clinical Research Training (TL1) scholarship from National Center for Advancing Translational Science at NIH, Society for Biomaterials (SFB) travel award, Dean of Engineering Scholarship and Graduate School Fund for Excellence and Innovation. She is currently a NIH K99/R00 postdoctoral fellow in Prof. Zhenan Bao’s laboratory at Stanford and her research is focused on designing bioelectronic platforms for early diagnosis of cancers, with emphasis on brain tumors. Her interdisciplinary research lies at the interface of engineering and translational medicine and focuses on the development of polymer-based, wireless, implantable or wearable bioelectronics for disease diagnosis and therapy. She is a member of Diversity Initiative center at Stanford and has been consistently involved in leading efforts to promote diversity among underrepresented and socioeconomically disadvantaged students. She serves on various diversity committees and plans to continue her efforts by creating and leading outreach programs as a future independent investigator.

  • Yasser Khan

    Yasser Khan

    Postdoctoral Research Fellow, Chemical Engineering

    BioYasser Khan is a postdoctoral scholar in the Department of Chemical Engineering at Stanford University, in Prof. Zhenan Bao’s Group. Yasser completed his Ph.D. in Electrical Engineering and Computer Sciences from the University of California, Berkeley, in Prof. Ana Claudia Arias’ Group. He received his B.S. in Electrical Engineering from the University of Texas at Dallas, and M.S. in Electrical Engineering from King Abdullah University of Science and Technology. Yasser’s research focuses mainly on wearable medical devices, with an emphasis on flexible bioelectronic and biophotonic sensors. Additionally, he worked on projects ranging from “electrochemical etching of ultra-sharp SPM tips” to “energy harvesting in complex systems.” His job experience includes internships at UC Berkeley, Oxford University, Stanford University, and Zyvex Labs in Texas.

  • Chaitan Khosla

    Chaitan Khosla

    Wells H. Rauser and Harold M. Petiprin Professor and Professor of Chemistry and, by courtesy, of Biochemistry

    Current Research and Scholarly InterestsResearch in this laboratory focuses on problems where deep insights into enzymology and metabolism can be harnessed to improve human health.

    For the past two decades, we have studied and engineered enzymatic assembly lines called polyketide synthases that catalyze the biosynthesis of structurally complex and medicinally fascinating antibiotics in bacteria. An example of such an assembly line is found in the erythromycin biosynthetic pathway. Our current focus is on understanding the structure and mechanism of this polyketide synthase. At the same time, we are developing methods to decode the vast and growing number of orphan polyketide assembly lines in the sequence databases.

    For more than a decade, we have also investigated the pathogenesis of celiac disease, an autoimmune disorder of the small intestine, with the goal of discovering therapies and related management tools for this widespread but overlooked disease. Ongoing efforts focus on understanding the pivotal role of transglutaminase 2 in triggering the inflammatory response to dietary gluten in the celiac intestine.