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The Barouch Lab is focused on defining the peripheral cardiovascular effects of the adipocytokine leptin, which is a key to the understanding of obesity-related cardiovascular disease. Interestingly, many of the hormonal abnormalities seen in obesity are mimicked in heart failure. The research program will enhance the understanding of metabolic signaling in the heart, including the effects of leptin, exercise, sex hormones, and downstream signaling pathways on metabolism and cardiovascular function.
The lab also is working to determine the precise role of the “metabolic” beta-3 adrenergic receptor (ß3AR) in the heart and define the extent of its protective effect in obesity and in heart failure, including its role in maintaining nitric oxide synthase (NOS) coupling. Ultimately, this work will enable the exploration of a possible therapeutic role of ß3AR agonists and re-coupling of NOS in preventing adverse ventricular remodeling in obesity and in heart failure.
Lili Barouch, MD,... is an associate professor of medicine in the Division of Cardiology and a member of the Advanced Heart Failure and Cardiac Transplantation group at the Johns Hopkins University School of Medicine. view more
The nervous system has extremely complex RNA processing regulation. Dysfunction of RNA metabolism has emerged to play crucial roles in multiple neurological diseases. Mutations and pathologies of several RNA-binding proteins are found to be associated with neurodegeneration in both amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). An alternative RNA-mediated toxicity arises from microsatellite repeat instability in the human genome. The expanded repeat-containing RNAs could potentially induce neuron toxicity by disrupting protein and RNA homeostasis through various mechanisms.
The Sun Lab is interested in deciphering the RNA processing pathways altered by the ALS-causative mutants to uncover the mechanisms of toxicity and molecular basis of cell type-selective vulnerability. Another major focus of the group is to identify small molecule and genetic inhibitors of neuron toxic factors using various high-throughput screening platforms. Finally, we are also highly i...nterested in developing novel CRISPR technique-based therapeutic strategies. We seek to translate the mechanistic findings at molecular level to therapeutic target development to advance treatment options against neurodegenerative diseases. view more
The Theresa Shapiro Laboratory studies antiparasitic chemotherapy. On a molecular basis, we are interested in understanding the mechanism of action for existing antiparasitic agents, and in identifying vulnerable metabolic targets for much-needed, new, antiparasitic chemotherapy. Clinically, our studies are directed toward an evaluation, in humans, of the efficacy, pharmacokinetics, metabolism and safety of experimental antiparasitic drugs.
The Todd Brown Lab focuses on metabolic, endocrine and skeletal abnormalities in HIV-infected patients, particularly as these factors relate to aging. Our studies take an epidemiologic approach to understanding the occurrence and prevalence of insulin resistance, diabetes, and anthropometric changes in HIV patients and their relationship to antiretroviral treatment.
The Weiss Lab, which features a multi-disciplinary team at Johns Hopkins as well as at Cedars Sinai Medical Center in Los Angeles, is dedicated to identifying the most important clinical, genetic, structural, contractile and metabolic causes of sudden cardiac death as well as the means to reverse the underlying pathology and lower risk.
Current projects include research into energy metabolism in human heart failure and creatine kinase metabolism in animal models of heart failure.
Robert G. Weiss, MD, is professor of medicine, Radiology and Radiological Science, at the Johns Hopkins University.
Dr. Bhujwalla’s lab promotes preclinical and clinical multimodal imaging applications to understand and effectively treat cancer. The lab’s work is dedicated to the applications of molecular imaging to understand cancer and the tumor environment. Significant research contributions include 1) developing ‘theranostic agents’ for image-guided targeting of cancer, including effective delivery of siRNA in combination with a prodrug enzyme 2) understanding the role of inflammation and cyclooxygenase-2 (COX-2) in cancer using molecular and functional imaging 3) developing noninvasive imaging techniques to detect COX-2 expressing in tumors 4) understanding the role of hypoxia and choline pathways to reduce the stem-like breast cancer cell burden in tumors 5) using molecular and functional imaging to understand the role of the tumor microenvironment including the extracellular matrix, hypoxia, vascularization, and choline phospholipid metabolism in prostate and breast cancer invasion and metast...asis, with the ultimate goal of preventing cancer metastasis and 6) molecular and functional imaging characterization of cancer-induced cachexia to understand the cachexia-cascade and identify novel targets in the treatment of this condition. view more
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