Education and Training

Ph.D.: University of Manchester, Cardiovascular and Molecular Medicine
Postdoctoral Fellowship: University of Manchester; Gladstone Institutes, Cardiology

Research Interests

My main research interest is to identify novel therapies for heart failure focusing on endogenous heart repair and regeneration mechanisms. As a pharmacist by training and the unique combination of academic and industry experience, my major aim is to perform translational research which directly benefits heart failure patients.

During my research endeavors, I have studied novel mechanisms and therapies for cardiac hypertrophy and heart failure in animal models. During my doctoral and first postdoctoral training, I identified the role of the plasma membrane calcium ATPase isoform 4 (PMCA4) in cardiac physiology and pathophysiology.

As a pharmacist, I have a special interest in translating my findings into human drug therapies for heart disease. Thus, I started screening drugs to identify the first specific inhibitor for PMCA4, which could then be used as a novel treatment for cardiac hypertrophy and heart failure. Recently, in collaboration with the Fraunhofer Institute in Germany, the Medical Research Council in the UK, and the drug company Astra Zeneca, we created a program to identify new drugs that treat heart failure by targeting PMCA4.

To expand my expertise in cardiac regeneration, I joined Prof. Deepak Srivastava's laboratory at the Gladstone Institutes in August 2013. In the Srivastava lab I acquired training on cutting-edge technology for direct cardiac reprogramming, and profiling single-cell genomes and epigenomes during the reprogramming process. The skills that I have learned while working with Prof. Srivastava will be invaluable to running my independent laboratory.

I worked on two parallel approaches to induce endogenous heart repair: direct cardiac reprogramming and inducing cardiomyocyte proliferation. Both approaches were highly successful. The direct reprogramming project was highly recognized by our scientific community, as it was awarded a Scientist Development Grant award from the American Heart Association, manuscript was published in Circulationand this work was chosen as finalist at the Louis N. and Arnold M. Katz Basic Science Research Prize for Young Investigators from the AHA in 2016.

In addition, the cardiomyocyte proliferation project was accepted for publication in Cell and awarded the March 22, 2018 issue cover for the journal. In October 2016 Dr. Srivastava has founded a new start up (Tenaya Therapeutics) with $50 million investment from the column group to develop new therapies for heart failure based on my findings. Therefore, I was the first scientist recruited to the company to lead the efforts of direct cardiac reprogramming where I enjoyed the unique industry experience in building a start up from scratch.

In Tenaya I was able to establish novel system for long term culture of human heart slices and efficiently demonstrating direct cardiac reprogramming in such pre-clinical models. In addition, I was able to reduce the number of essential reprogramming factors in human cardiac fibroblasts to 3 essential factors where they are now under pre-clinical testing for in vivo efficiency in large animals (pigs). Due to the quick success in Tenaya, the research and development section ended very soon and now the major focus on scaling up viral manufacturing and filing IND which is away from my interest.

Therefore, I have decided to go back to academia to initiate new discoveries to treat heart failure mainly focusing on understanding the reprogramming process and cell cycle regulation of cardiomyocyte proliferation.

Featured Publications

• Mohamed TMA, Abouleisa R, Hill BG. Metabolic Determinants of Cardiomyocyte Proliferation. Stem Cells. 2022 May 27;40(5):458-467. doi: 10.1093/stmcls/sxac016. PMID: 35263763; PMCID: PMC9156555.
• Abouleisa RRE, Salama ABM, Ou Q, Tang XL, Solanki M, Guo Y, Nong Y, McNally L, Lorkiewicz PK, Kassem KM, Ahern BM, Choudhary K, Thomas R, Huang Y, Juhardeen HR, Siddique A, Ifthikar Z, Hammad SK, Elbaz AS, Ivey KN, Conklin DJ, Satin J, Hill BG, Srivastava D, Bolli R, Mohamed TMA. Transient Cell Cycle Induction in Cardiomyocytes to Treat Subacute Ischemic Heart Failure. Circulation. 2022 Apr 26;145(17):1339-1355. doi: 10.1161/CIRCULATIONAHA.121.057641. Epub 2022 Jan 21. PMID: 35061545; PMCID: PMC9038650.
• Kaur N, Ruiz-Velasco A, Raja R, Howell G, Miller JM, Abouleisa RRE, Ou Q, Mace K, Hille SS, Frey N, Binder P, Smith CP, Fachim H, Soran H, Swanton E, Mohamed TMA, Müller OJ, Wang X, Chernoff J, Cartwright EJ, Liu W. Paracrine signal emanating from stressed cardiomyocytes aggravates inflammatory microenvironment in diabetic cardiomyopathy. iScience. 2022 Feb 23;25(3):103973. doi: 10.1016/j.isci.2022.103973. PMID: 35281739; PMCID: PMC8905320.
• Abdeltawab H, Khalifa F, Hammouda K, Miller JM, Meki MM, Ou Q, El-Baz A, Mohamed TMA. Artificial Intelligence Based Framework to Quantify the Cardiomyocyte Structural Integrity in Heart Slices. Cardiovasc Eng Technol. 2022 Feb;13(1):170-180. doi: 10.1007/s13239-021-00571-6. Epub 2021 Aug 16. PMID: 34402037; PMCID: PMC8847536.
• Mohamed TMA, Moslehi J, Satin J. Editorial: Recent Advances in Cardiotoxicity Testing. Front Pharmacol. 2021 Nov 8;12:798189. doi: 10.3389/fphar.2021.798189. PMID: 34819868; PMCID: PMC8606750.
• Abouleisa RRE, McNally L, Salama ABM, Hammad SK, Ou Q, Wells C, Lorkiewicz PK, Bolli R, Mohamed TMA, Hill BG. Cell cycle induction in human cardiomyocytes is dependent on biosynthetic pathway activation. Redox Biol. 2021 Oct;46:102094. doi: 10.1016/j.redox.2021.102094. Epub 2021 Aug 5. PMID: 34418597; PMCID: PMC8379496.
• Salama ABM, Gebreil A, Mohamed TMA, Abouleisa RRE. Induced Cardiomyocyte Proliferation: A Promising Approach to Cure Heart Failure. Int J Mol Sci. 2021 Jul 19;22(14):7720. doi: 10.3390/ijms22147720. PMID: 34299340; PMCID: PMC8303201.
• Meki MH, Miller JM, Mohamed TMA. Heart Slices to Model Cardiac Physiology. Front Pharmacol. 2021 Feb 4;12:617922. doi: 10.3389/fphar.2021.617922. PMID: 33613292; PMCID: PMC7890402.
• Stafford N, Zi M, Baudoin F, Mohamed TMA, Prehar S, De Giorgio D, Cartwright EJ, Latini R, Neyses L, Oceandy D. PMCA4 inhibition does not affect cardiac remodelling following myocardial infarction, but may reduce susceptibility to arrhythmia. Sci Rep. 2021 Jan 15;11(1):1518. doi: 10.1038/s41598-021-81170-2. PMID: 33452399; PMCID: PMC7810749.
• Mohamed TMA, Conklin DJ. Emerging technology and platforms for cardiotoxicity testing. Toxicol Appl Pharmacol. 2020 Dec 1;408:115262. doi: 10.1016/j.taap.2020.115262. Epub 2020 Oct 2. PMID: 33017593; PMCID: PMC7747951.