OUR TEAM




Principal Investigator
Eric Nuermberger, MD

I obtained my MD degree from Vanderbilt University School of Medicine and trained in Internal Medicine and Infectious Diseases at The Johns Hopkins Hospital. Since 2001, our laboratory team has been engaged in translational drug development research using animal and in vitro models of tuberculosis. This work has informed the clinical development of moxifloxacin, rifapentine, bedaquiline, pretomanid, clofazimine and oxazolidinones, as well as novel regimens comprising one or more of these drugs, for treatment of active and latent tuberculosis. My positions on the scientific agenda-setting committees of the TB Trials Consortium (TBTC) and the AIDS Clinical Trials Group’s TB Transformative Science Group and co-chairing the Preclinical and Clinical Sciences Working Group of the Critical Path to TB Regimens initiative, have facilitated the efficient translation of pre-clinical results to inform clinical trial designs. More recently, our efforts have expanded to include drug and regimen development for Buruli ulcer, a neglected tropical disease caused by Mycobacterium ulcerans, and chronic lung infections caused by the Mycobacterium avium and Mycobacterium abscessus complexes. Our work has been sponsored by the National Institutes of Health, the Global Alliance for TB Drug Development, the Bill and Melinda Gates Foundation, the U.S. Food and Drug Administration, and a number of pharmaceutical sponsors and other private foundations.




Sandeep Tyagi, Sr. Research Specialist

Originally trained in infectious diseases, I have over 15 years of experience in research on the pathogenesis of the major mycobacterial diseases – Mycobacterium tuberculosis and Mycobacterium ulcerans disease. Over the last decade, I have acquired increasing interest in and knowledge of the treatment of tuberculosis, Buruli ulcer and their pathogenesis and have become involved in studies of animal models of both diseases. I have been involved in studies with immune competent as well as immune-deficient mice infected with M. tuberculosis and M. ulcerans. I am currently involved in studies to optimize the prevention and shortening of treatment of M. tuberculosis and M. ulcerans disease. The combination of my experiences in mouse and in vitro diagnostics and pharmacokinetics/pharmacodynamics of experimental tuberculosis and Buruli ulcer, and experimental chemotherapy of tuberculosis and Buruli ulcer make the current project highly interesting and a particularly good fit with my background. Currently I am applying my experience and knowledge of mycobacterial diseases towards the better understanding of treatment of commonly found opportunistic Non-tuberculosis mycobacteria i.e., M. avium, M. abscessus, etc.

Heena Soni, PhD

I obtained my Ph.D. from M.S. University of Baroda, Gujarat, India, and did postdoctoral research at Center for TB Research and Center for Nanomedicine at Johns Hopkins School of Medicine, USA. I have been working at Center for TB research since 2009. I worked on preclinical testing of DNA and protein based vaccine in latent TB model. I am presently working on multiple projects, including a development and characterization of Mycobacterium abscessus mouse infection model and testing the efficacy of novel drugs and drug combinations in Mycobacterium abscessus, Mycobacterium avium complex, and Mycobacterium tuberculosis infection. Hobbies: Cooking, gardening, traveling, watching movies, cricket and soccer games, volunteering at elementary school for math and reading programs

Nicole Ammerman, PhD, ScM

I have a PhD in Microbiology and Immunology from the University of Maryland School of Medicine and an ScM in Epidemiology from the Johns Hopkins Bloomberg School of Public Health. My research focuses on the experimental chemotherapy of tuberculosis and nontuberculous mycobacterial diseases. Current research projects include investigation of the treatment-shortening potential of clofazimine in regimens for drug-susceptible tuberculosis; evaluation of a long-acting injectable formulation of bedaquiline for TB preventive therapy; and development of nontuberculous mycobacteria infection models for treatment studies.

Deepak Almeida, PhD

I completed my Ph.D. from University of Mumbai followed by postdoctoral studies at Johns Hopkins University Center for TB Research. My research interest includes work on mycobacterial human pathogens, especially M. tuberculosis and M. ulcerans, with special emphasis on diagnosis, treatment and drug resistance. I am interested in use of various in vitro and animal models to predict the activity of different drugs old and new against these pathogens, to better optimize their dose and delivery and to improve the efficacy of treatment regimens. The final goal is to develop the most efficient treatment regimens capable of killing the mycobacteria in shortest possible duration and with minimal risk of drug resistance development.

Paul J. Converse, PhD

I received a Master of Health Science (MHS) degree in Tropical Public Health, followed by a PhD in Immunology & Infectious Diseases from Johns Hopkins University. I then did research on leprosy at the Armauer Hansen Research Institute in Addis Ababa, Ethiopia, and HIV-associated opportunistic infections at the Karolinska Institute in Stockholm, Sweden, before returning to work on leprosy and tuberculosis at the Johns Hopkins School of Public Health. After a stint at a biotechnology and diagnostics company, I returned to Johns Hopkins and since 2002 have worked on the pathogenesis and treatment of tuberculosis and Buruli ulcer, caused by Mycobacterium ulcerans. I have also worked on the detection of mycolactone, the toxin produced by M. ulcerans. Hobbies: Bicycling, reading, kayaking, hiking, and traveling

Rokeya Tasneen, MBBS, PhD

I received my MBBS degree from and completed residence at Dhaka Medical College, Bangladesh. After obtaining my PhD in Medical Microbiology from Kagoshima University, Japan, I joined the Johns Hopkins Center for Tuberculosis Research, where I have been working for more than 15 years. Currently I am working to evaluate chemotherapeutic agents against drug-sensitive and drug-resistant M. tuberculosis in murine models, especially using C3HeB/FeJ mice, which develop more human-like lung pathology following M. tuberculosis infection by producing extensive caseous pneumonia, encapsulated caseous necrotic granulomas, and cavitary disease as compared to the cellular granulomas formed in BALB/c mice. My primary research focus is developing the C3HeB/FeJ mice model for preclinical studies of a novel regimens against M. tuberculosis infection. I also use the BALB/c mouse model to evaluate novel regimens for multi- and extensively drug-resistant tuberculosis.

Dalin Rifat, PhD

I obtained my Ph.D. degree in pathobiology and currently work as a senior researcher in Dr. Nuemberger’s lab. My research projects mainly focus on characterization of essential genes and potential drug targets by using next generation sequencing and transposon mutagenesis in Mycobacterium tuberculosis and Mycobacterium abscessus. In addition, I am also involved in studies on resistance to novel anti-TB drug nitriimmidazoles, such as pretomanid and delamanid.

Si Yang Li

"I can't hear you over the sound of how awesome I am."

Amit Kaushik, PhD

I earned my PhD from All India Institute of Medical sciences (AIIMS), New Delhi, India. My main research expertise includes tuberculosis and nontuberculous mycobacteria, drug development/evaluation, experimental chemotherapy for infectious diseases, preclinical animal models and mycobacteriology. During my doctoral/post-doctoral training, I have contributed to twenty research articles mainly on development/evaluation of new antibacterials and disease diagnosis. Our work on a long-acting injectable bedaquiline formulation has shown promise as a short-course latent tuberculosis infection treatment (PMID: 30745396). I have demonstrated the potential of novel β-lactamase inhibitors (vabor/rele/nacu/zide/avibactam) against M. abscessus (PMID: 30642943, 28326811, doi: https://doi.org/10.1101/597765). My work has also demonstrated the potential of omadacycline and eravacycline against M. abscessus infections (PMID: 30962331). I am one of the inventor of novel carbapenems that have been filed for a provisional US patent (Novel Inhibitors of Bacterial Growth, WO2017132321A1). E-mail: akaushi5@jhmi.edu​

Yong Seok Chang, Research Specialist II

I graduated from UMBC in May 2014 with a Biological Sciences (BS) degree. Since then I’ve been working as a research technician/specialist while preparing to get into medical school. My work for the most part revolves around different chemotherapy using the murine model of TB.

Sanjana Tyagi, Research Technologist, MS

I graduated from a Masters Program in Biotechnology from the Krieger School of Arts and Sciences at Johns Hopkins University. My association with the lab began as a graduate, after which I continued to work with the team on testing various drug combinations and their efficiency against Mycobacterium abscessus and Non-tuberculosis Mycobacteria. I enjoy translational research and hope to incorporate my informatics knowledge in future studies

Maram Naji, Undergraduate Student

I am an undergraduate student at Johns Hopkins University studying Chemical and Biomolecular Engineering and Psychology. My academic interests are in cellular and protein engineering. My work in the lab currently focuses on the growth behavior of Mycobacterium abscessus and the efficacy of drugs under different conditions.

Keshav Shah, Undergraduate Student

I am a sophomore at Johns Hopkins University double majoring in Molecular & Cellular Biology and Mathematics. I am interested in understanding the molecular basis of M. tuberculosis resistance to novel anti-MDR-TB drugs, and I am currently assisting in generating a transposon mutant library for M. abscessus. Outside of lab, I am the Vice President of Global Medical Brigades, a captain of JHU Zinda (a competitive co-ed Bollywood fusion dance team), and an executive board member of Charm City Science League. My hobbies include playing and watching sports, singing, and exploring nature.​

Kristina Bigelow, Graduate Student

Undergraduate and Master's degrees at Kansas State University. Currently a graduate student in Pharmacology and Molecular Science. In my free time hang out with my dog Bear and my cat Fred.

Olumide Martins, Graduate Student

I received my Bachelors of Science (B.Sc.) in Biological Sciences from Carnegie Mellon University in 2014. Currently, I am a member of the Nuermberger Lab, conducting my thesis work as a Ph.D candidate in the Pharmacology and Molecular Sciences program at the Johns Hopkins School of Medicine.​