6529-Territo, Paul

Paul R. Territo, PhD, MS

Professor of Medicine

BRTC 214
Indianapolis, IN


Paul R. Territo received his Masters in Cardio-Renal Physiology from California Polytechnic Univrsity in 1993, and his Ph.D. from UNLV in 1996 in Cardiovascular and Respiratory Physiology. During his postdoctoral fellowship at the Laboratory of Cardiac Energetics at the NIH’s National Heart, Lung, and Blood Institute, he obtained critical training in noninvasive imaging technology and biophysics, which included Positron Emission Tomography (PET), Computed Tomography (CT), and Magnetic Resonance Imaging (MRI). From that time forward, he has focused his research on the development and application of imaging technologies to study disease progression, and evaluate the role of novel therapeutics on physiological processes. Leveraging these experiences, from 2001 to 2008, Dr. Territo as part of Eli Lilly’s drug discovery team developed novel imaging based biomarkers for therapeutic development, and rose to the rank of Senior Scientist. Shortly thereafter, Dr. Territo joined the faculty of Indiana University School of Medicine as an Associate Professor of Research in the Department of Radiology and Imaging Sciences, where served as the Director of the Preclinical Imaging Core. Over this interval, Dr. Territo continued to develop novel imaging based biomarkers for both preclinical and clinical assessment. In 2021, Dr. Territo was promoted to Professor of Medicine, where his lab continues to develops state-of-the-art biomarkers for monitoring disease progression and therapeutic response for Alzheimer’s Disease and Related Dementia (ADRD), oncology, and cardiovascular diseases. Currently, Dr. Territo serves as the Scientific Director of the IU Simon Cancer Signature Center Imaging Center.

Key Publications

1.    My early work focused on the biophysics and bioenergetics of metabolic control in heart disease. This work focused on demonstrating the role of Ca2+ as a second messenger of metabolic signaling in normal and diseased hearts. This early work focused on isolated mitochondria and the control networks that coordinate oxidative phosphorylation substrate flux, and demonstrated for the first time that the F0/F1-ATPase was Ca2+ sensitive and when combined with the known effects Ca2+ on NADH production via the TCA cycle, could explain the tight coupling of energy demand by the sarcomere and ATP production by the mitochondria. This work further demonstrated that this coupling was dose dependent, very rapid, and was tightly linked to SR release of Ca2+. This body of work has helped to redefine the role of Ca2+ in energy production in normal and diseased myocardium, and has served as a platform for investigation of novel cardiac drugs in heart disease. In the body of work below, I have served as the primary or senior author in all of these studies. 

a.    Balaban, RS, S. Bose, S. A. French, and P.R. Territo  (2003) “Role of calcium in metabolic signaling between cardiac sarcoplasmic reticulum and mitochondria in vitro.” Am J Physiol Cell Physiol. 284(2):C285-93.
b.    P.R. Territo, S. A. French, and R.S. Balaban. (2001)  Simulation of cardiac work transitions, in vitro: effects of simultaneous Ca2+ and ATPase additions on isolated porcine heart mitochondria. Cell Calcium. 30(1):19-27.
c.     P.R. Territo, S.A. French, M.C. Dunleavy, F.J. Evans, and R.S. Balaban (2001) “Calcium activation of oxidative phosphorylation: Rapid kinetics of mVO2, NADH and Light Scattering” J. Biol. Chem. 276: 2586-2599
d.    P.R. Territo, V.K. Mootha, S.A. French, and R.S. Balaban (2000) “Activation of heart mitochondrial oxidative phosphorylation: Role of the Fo/F1ATPase.” Am. J. Physiol. 278: C423-C435.

2.    A key area of focus in my career has been the development of technologies that permit determination of physiological or pharmacological function. The bulk of this work has focused on optical, magnetic resonance imaging, and positron emission tomography (PET) ligand development, and have enabled our teams to non-invasively probe neurological and cardiovascular function with time. In the body of work below, I have served as the primary, co-investigator, or senior author in all of these studies. 

a.    T. Tirkes, CY Jeon, L Li, AY Joon, TA Seltman, M Sankar, SA Persohn, and P.R. Territo. Association of Pancreatic Steatosis With Chronic Pancreatitis, Obesity, and Type 2 Diabetes Mellitus. Pancreas. 2019 Mar;48(3):420-426.

b.    P.R. Territo, Riley AA, McCarthy BP, and Hutchins GD. Measurement of cardiovascular function using a novel view-sharing PET reconstruction method and tracer kinetic analysis. EJNMMI Phys. 2016 Dec;3(1):24.

c.     P.R. Territo, Meyer JA, Peters JS, Riley AA, McCarthy BP, Gao M, Wang M, Green MA, Zheng QH, and Hutchins GD. Characterization of 11C-GSK1482160 for Targeting the P2X7 Receptor as a Biomarker for Neuroinflammation. J Nucl Med. 2017 Mar;58(3):458-465.

d.    K.K. Yoder, G.D. Hutchins, B.H. Mock, X. Fei, W.L. Winkle, B.D. Gitter, P.R. Territo, and Q.H. Zheng (2009) “Dopamine transporter binding in rat striatum:  A comparison of O-methyl and N-methyl [11C]b-CFT”, Nuc. Med. Biol. Jan;36(1):11-6.

3.    The development of imaging based biomarkers for in vivo testing novel therapeutics in appropriate and validated model systems are key aspects of translating model based mechanistic work to clinical applications. Our lab has focused on development of validated imaging methods in animal models, and formulating a framework for quantification of the biomarker of interest utilizing murine bioluminescence (BLI) and/or 18F-FDG PET as a marker of tumor cell growth and development. Although methods such as BLI are not directly translational, the knowledge gained through this work provides a rapid and inexpensive method to evaluate novel therapeutic regimes non-invasively, and are often followed by bridging work to more expensive clinically relevant modalities such as CT, MRI, and PET. This approach in our institution has become the preferred route for novel therapeutics testing in oncology studies. In the body of work below, I serve as the lead investigator, senior investigator or co-investigator in all of these studies.

a.    P.R. Territo, Maluccio M, Riley AA, McCarthy BP, Fletcher J, Tann M, Saxena R, Skill NJ. Evaluation of 11C-acetate and 18F-FDG PET/CT in mouse multidrug resistance gene-2 deficient mouse model of hepatocellular carcinoma. BMC Med Imaging. 2015 May 16;15:15. doi: 10.1186/s12880-015-0058-z. PMID: 25981587; PMCID: PMC4493966.
b.    H.E. Shannon, M.L. Fishel, J. Xie, D. Gu, B.P. McCarthy, A.A. Riley, A.L. Sinn, J.M. Silver, K. Peterman, M.R. Kelley, H. Hanenberg, M. Korc, K. E. Pollok, and P.R. Territo (2015) “Longitudinal Bioluminescence Imaging of Primary versus Abdominal Metastatic Tumor Growth in Orthotopic Pancreatic Tumor Models in NSG Mice”, Panc Jan;44(1):64-75
c.     T.W. Corson, B.C. Samuels, A.A. Wenzel, A.J. Geary, A.A. Riley, B.P. McCarthy, H. Hanenberg, B.J. Bailey, P.I. Rogers, K.E. Pollok, G. Rajashekhar, and P.R. Territo (2014) “Multimodality Imaging Methods for Assessing Retinoblastoma Orthotopic Xenograft Growth and Development” PLoS One, Jun 5;9(6)
d.    J.R. Gehlhausen, S.J. Park, A.E. Hickox, M. Shew, K. Staser, S.D. Rhodes, K. Menon, J.D. Lajiness, M. Mwanthi, X. Yang, J. Yuan, P.R. Territo, G. Hutchins, G. Nalepa, F.C. Yang, S.J. Conway, M.G. Heinz, A. Stemmer-Rachamimov, C.W. Yates, D. Wade Clapp. (2015) “A murine model of neurofibromatosis type 2 that accurately phenocopies human schwannoma formation.” Hum Mol Genet. Jan;24(1),1-8

4.    In addition to the above listed contributions, and in collaboration with a number of investigators at IU, I have developed several model systems for the testing of novel therapeutics and/or systems. This work has focused on the formation of well characterized canine models of disease (i.e. osteoporosis, seizure), and then developed rigorous system from which to evaluate the therapeutic of interest. In virtually all cases, this paradigm has been the basis for drug candidate selection. In each of these papers, I have served as the primary investigator or co-investigator.  

a.    Allen MR, P.R. Territo, C Lin, S Persohn, L Jiang, AA Riley, BP McCarthy, CL Newman, DB Burr, GD Hutchins. (2015). “In vivo UTE-MRI Reveals Positive Effects of Raloxifene on Skeletal Bound Water in Skeletally Mature Beagle Dogs.” J Bone Miner Res. 2015 Jan 31. [Epub ahead of print]
b.    P.R. Territo, H.E. Shannon, K. Newhall, S.D. Barnhart, S.C. Peters, D.R. Engleking, T. Bin, T.J. Burnett, J.M. Rodewald, B. Abdul-Karim, K.J. Freise. “Nonlinear Mixed Effects Pharmacokinetic/Pharmacodynamic Analysis of the Anticonvulsant Ameltolide (LY201116) In A Canine Seizure Model.” J Vet Pharmacol Ther. (2008) Dec;31(6):562-70.
c.     P.R. Territo, K.J. Freise, K. Newhall, S.D. Barnhart, S.C. Peters, D.R. Engleking, T.J. Burnett, B. Abdul-Karim, H.E. Shannon. (2007) “Development and Validation of the Maximal Electro-Shock Seizure Model in Dogs” J Vet Pharmacol Ther. Dec;30(6):508-15.

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  • Professor of Medicine

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