Dr. Meltzer is an internationally renowned leader in the molecular pathobiology of gastrointestinal malignancy and premalignancy. He invented molecular methods to detect loss of heterozygosity in tiny biopsies, triggering an avalanche of research on precancerous lesions. He was the first to comprehensively study coding region microsatellite instability, leading to the identification of several important tumor suppressor genes. He performed several groundbreaking genomic, epigenomic and bioinformatic studies of esophageal and colonic neoplasms, shifting the GI research paradigm toward genome-wide approaches. He directed an ambitious nationwide validation study of DNA methylation-based biomarkers for the prediction of neoplastic progression in Barrett’s esophagus. Dr. Meltzer founded and led the Aerodigestive Cancer and Biomarker Interdisciplinary Programs at the University of Maryland, also becoming associate director for core sciences at that school’s Cancer Center. He currently holds an endowed professorship and is the director of GI biomarker research at Johns Hopkins. The laboratory group focuses its efforts on the molecular genetics of gastrointestinal cancers and premalignant lesions, as well as on translational research to improve early detection, prognostic evaluation, and treatment of these conditions. Below, some examples of this work are described.

The Center for Nanomedicine engineers drug and gene delivery technologies that have significant implications for the prevention, treatment and cure of many major diseases facing the world today. Specifically, we are focusing on the eye, central nervous system, respiratory system, women's health, gastrointestinal system, cancer, and inflammation. We are a unique translational nanotechnology effort located that brings together engineers, scientists and clinicians working under one roof on translation of novel drug and gene delivery technologies

The Brennen laboratory takes a rigorous, multi-disciplinary, team-based approach towards developing innovative therapeutic and prognostic strategies for prostate cancer with an emphasis on exploiting vulnerabilities within the tumor microenvironment towards this goal. To accomplish this goal, we are strategically pursuing novel therapeutic platforms, including stromal-targeted prodrugs, protoxins, and radiolabeled antibodies, in addition to cell-based therapy and drug delivery; all of which are designed to reduce toxicity to peripheral non-target tissue (i.e. side effects) while maximizing anti-tumor efficacy (i.e. therapeutic benefit). Currently, many of these strategies are focused on overcoming stromal barriers to anti-tumor immune responses such that men suffering from prostate cancer can share in the immense, revolutionary power of immunotherapy that is transforming care for many with advanced disease in other tumor types previously thought to be unmanageable using conventional approaches. Unfortunately, prostate cancer has largely proven refractory to these powerful approaches thus far and requires novel mono- or combinatorial treatment strategies to unleash the full potential of the immune system and generate personalized anti-tumor responses with the capability of producing long-term durable responses or even cures in these men.

The Bert Vogelstein Laboratory seeks to develop new approaches to the prevention or treatment of cancers through a better understanding of the genes and pathways underlying their pathogenesis. Our major focus is on cancers of the colon and rectum. We have shown that each colon neoplasm arises from a clonal expansion of one transformed cell. This expansion gives rise to a small benign colon tumor (called a polyp or adenoma). This clonal expansion and subsequent growth of the tumors appears to be caused by mutations in oncogenes and tumor suppressor genes, and the whole process is accelerated by defects in genes required for maintaining genetic instability. Mutations in four or five such genes are required for a malignant tumor to form, while fewer mutations suffice for benign tumorigenesis. As the mutations accumulate, the tumors become progressively more dangerous. Current studies are aimed at the further characterization of the mechanisms through which these genes act, the identification of other genes that play a role in this tumor type, and the application of this knowledge to patient management.

The Zhu lab is focused on characterizing the activities of large collection of proteins, building signaling networks for better understanding the mechanisms of biological processes, and identifying biomarkers in human diseases and cancers. More specifically, our group is interested in analyzing protein posttranslational modifications, and identifying important components involved in transcription networks and host-pathogen interactions on the proteomics level, and biomarkers in human IBD diseases.

Research in the Youngjee Choi Lab focuses on ambulatory care, cancer survivorship, high-value care and medical education.

The Devreotes Laboratory is engaged in genetic analysis of chemotaxis in eukaryotic cells. Our long-term goal is a complete description of the network controlling chemotactic behavior. We are analyzing combinations of deficiencies to understand interactions among network components and carrying out additional genetic screens to identify new pathways involved in chemotaxis. A comprehensive understanding of this fascinating process should lead to control of pathological conditions such as inflammation and cancer metastasis.

The Artemov lab is within the Division of Cancer Imaging Research in the Department of Radiology and Radiological Science. The lab focuses on 1) Use of advanced dynamic contrast enhanced-MRI and activated dual-contrast MRI to perform image-guided combination therapy of triple negative breast cancer and to assess therapeutic response. 2) Development of noninvasive MR markers of cell viability based on a dual-contrast technique that enables simultaneous tracking and monitoring of viability of transplanted stems cells in vivo. 3) Development of Tc-99m and Ga-68 angiogenic SPECT/PET tracers to image expression of VEGF receptors that are involved in tumor angiogenesis and can be important therapeutic targets. 4) Development of the concept of “click therapy” that combines advantages of multi-component targeting, bio-orthogonal conjugation and image guidance and preclinical validation in breast and prostate cancer models.

The Douglas Ball Lab conducts clinical trials and pre-clinical laboratory studies of thyroid cancer. Our clinical trials, performed in collaboration with research staff in the upper aero-digestive group in the Sidney Kimmel Comprehensive Cancer Center, have included protocols for advanced radioiodine-refractory differentiated thyroid cancer and medullary thyroid cancer. Our pre-clinical research, conducted with Dr. Nelkin, Dr. Agrawal and other Kimmel Cancer Center researchers, includes pathogenesis and mechanisms of treatment resistance in medullary thyroid cancer, and pathogenesis and immune-directed therapy of anaplastic thyroid cancer.

The Pardoll Lab focuses on the regulation of antigen-specific T cell responses and studies approaches to modify these responses for immunotherapy. Pardoll has a particular interest in cancer immunology and his lab’s studies on basic immunologic mechanisms have led to the development and design of a number of cancer vaccines and discovery of key checkpoint ligands and receptors, such as PD-L2, LAG-3 and neuritin, many of which are being targeted clinically. Our primary pursuits are discovering and elucidating new molecules that regulate immune responses, investigating the biology of regulatory T cells, and better understanding the specific biochemical signatures that allow a patient’s T cells to selectively target cancer cells.