Umeobika, Christian

Christian Umeobika is the manager of the radiochemistry laboratory at the University of Ottawa Heart Institute‘s Cardiac PET Centre.


Christian Umeobika received his PhD in organic chemistry at the University of Aberdeen, Scotland, United Kingdom. His work involved the study of the total synthesis and structure–activity relationship of bioactive molecules, the development of organic catalysts and novel methods for application in organic synthesis. In 2018, he moved to Toronto to undertake a postgraduate diploma in pharmaceutical research and development. After graduation, he worked with Trillium Healthcare Products as a quality control chemist.

At the end of 2020, he accepted a chemistry technologist position at the national Cardiac PET Centre at the University of Ottawa Heart Institute where he focused on routine production and quality control analysis of positron emission tomography (PET) radiotracers. In 2022, he accepted a PET development and production radiochemist position where he focused on synthesis and implementation of 11C and 18F radiotracers. In November 2022, he became the manager of the radiochemistry laboratory at the national Cardiac PET Centre. 

Prior to joining the Heart Institute, Christian spent 10 years at Nnamdi Azikiwe University, Awka, Anambra State, Nigeria as an assistant professor.

Research and clinical interests

Christian is interested the research and development of the cardiovascular, neurological, and oncological imaging agents. He is currently investigating and implementing novel probes for pre-clinical and clinical investigations using PET.


  • Alexandru-Crivac, C.N., Umeobika, C., Leikoski, N., Jokela, J., Rickaby, K.A., Grilo, A.M., Sjo, P., Plowright, A.T., Idress, M., Siebs, E., Nneoyi-Egbe, A., Wahlsten, M., Sivonen, K., Jaspars, M., Trembleau, L., Fewer, D., Houssen, W.E. (2017). Cyclic peptide production using macrocyclase with enhanced substrate promiscuity and relaxed recognition determinants. Chem. Commun. (53): 10656-10659.
  • Booth, J., Alexandru-Crivac, C.N., Rickaby, K.A., Nneoyi-Egbe, A.F., Umeobika, C., McEwan, A.R., Trembleau, L., Jaspars, M., Houssen, W.E., Shalashilin, D.V. (2017). A blind Test of Computational Technique for Predicting the Likelihood of Peptide Sequences to Cyclise. J. Phy. Chem. Lett.  (8): 2310 -2315.
  • Parajuli, A., Kwak, D.H., Dalponte L., Umeobika U.C., Trembleau, L., Bent, A., Sivonen, K., Wahlsten, M., Wang, H., Rizzi, E., De Bellis, G., Naismith, J., Jaspars, M., Liu, X., Houssen, W., Fewer, D.P. (2016). A unique tryptophan C‐Prenyltransferase from the kawaguchipeptin biosynthetic pathway. Angewandte Chemie. 128(11):3660-3663.
Christian Umeobika, PhD

Umeobika, Christian

Umeobika, Christian

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Appointments and affiliations

Manager, Radiochemistry Laboratory
University of Ottawa Heart Institute