Jingjie joined the Ph.D. program in Nutritional Sciences at Cornell University in January 2023. She works in Dr. Xin-Gen Lei’s group, where she studies phytases as both animal feed additives and soil fertilizers using computational biology and enzyme engineering. Her work focuses on uncovering the evolutionary diversity and catalytic mechanisms of phosphorus-mobilizing enzymes and developing soil-compatible biocatalysts to reduce fertilizer dependence and environmental impact. Motivated by the potential of biotechnology to address global challenges in nutrient sustainability and food security, her long-term goal is to translate enzyme innovation into scalable agricultural and environmental solutions through academic-industry partnerships.

Keith J. Ou 1, Jingjie Du 2, Guanchen Liu 3, Arjun Chapagain 4, Daniel A. Nuccio 5, Pallavi Singh 5, Woo Kyun Kim 3, Young Min Kwon 4, and Xin Gen Lei 1,2,* Efficacy and Biosafety of 25-Hydroxyvitamin D3 Biofortified in Egg Yolk in Mice Fed Two Levels of Dietary Fat. The Journal of Nutrition. 2025; Jingjie Du1, Mark Khemmani1, Thomas Halverson1, Adriana Ene2, Roberto Limeira3, Lana Tinawi3, Baylie R. Hochstedler-Kramer1, Catherine Putonti2,4, Alan J. Wolfe1,3*.  Cataloging the Phylogenetic Diversity of Human Bladder Isolated Bacteria. Genome Biology. 2024.; Zhi-Ping Zhong1,2,3, Jingjie Du2, &, Stephan Koestlbacher 5,§, Petra Pjevac5,6, Sandi Orlić7,8, Matthew B. Sullivan1,2,3,9*. Potential viral modulation of microbial methane production and oxidation. Nature Communications. 2024. ; Jingjie Du1*, Ahmed Zayed1*, Kristina A. Kigerl3*, Kylie Zane2*, Matthew B. Sullivan1,4,5^& Phillip G. Popovich3^. Spinal Cord Injury Changes the Structure and Functional Potential of Gut Bacterial and Viral Communities. mSystems. 2021;6(3). doi:10.1128/mSystems.01356-20; Fengping Liu1†, Jingjie Du2†, Qixian Zhai3†, Jialing Hu4†, Aaron W. Miller5†, Tianli Ren6†, Lei Hu4, Jiayi Sheng4, Chaoqun Gu4, Longxian Lv7*, Alan J. Wolfe2*, Ninghan Feng4*. The bladder microbiome, metabolome, cytokines, and phenotypes in patients with systemic lupus erythematosus. Microbiology Spectrum (†co-first author).2022;10(5). 

M.S., Ohio State University
B.S., Sun-Yat Sen University