Graduate School of Medical Sciences
A partnership with the Sloan Kettering Institute

Douglas Ballon

Professor
Ballon
Development of quantitative imaging biomarkers for applications in genetic medicine; for studying the organ tropism of a range of wildtype and engineered viral vectors used in gene therapy, and for measuring whole-body immune response to vector administration.

Research

My group has developed several imaging and gene delivery techniques for application to an autosomal recessive pediatric neurodegenerative disease known as late infantile neuronal ceroid lipofuscinosis (CLN2 disease). Specifically, we developed the first non-invasive biomarker panel for CLN2 using multiparametric MRI. This work was featured in an invited presentation to the international WORLD Symposium on lysosomal storage diseases in 2011, and the methods were further developed for inclusion into a currently ongoing worldwide multi-Center trial of the first drug that has been shown to be successful against CLN2. In 2014, we presented the first demonstration of adeno-associated viral vector mediated intraarterial gene delivery and expression for LINCL in the mouse brain. This work was originally presented at the New York Academy of Sciences conference on the Blood Brain Barrier in October 2011 where it received a Best Poster Award and a special oral presentation at the conclusion of the conference. Most recently, we developed robust reproducible viral vector radiolabeling. A major problem in viral vector mediated gene therapy is the issue of tropism, or the ultimate destination of administered vector in the body. Iodine-124 labeling of adeno-associated virus capsids was achieved that allows for monitoring of the spatial distribution of vector in the CNS. Adeno-associated virus is one of the most useful viral vectors in gene therapy trials. I was the senior investigator on these studies. 

Current Projects:

  • Rapid non-invasive whole-body imaging of gene transfer vectors 

  • Imaging biomarkers for disease severity and therapeutic response in CLN2 disease 

  • Techniques for magnetic resonance microscopy 

  • Magnetic resonance studies of bone marrow hematopoiesis 

Bio

Doug was originally trained at Rutgers University as an experimental nuclear physicist with expertise in gamma ray coincidence spectroscopy. He subsequently did his postdoctoral work developing applications and techniques for magnetic resonance imaging and spectroscopy at Memorial Sloan-Kettering Cancer Center. In 2001 he became the Founding Director of the Citigroup Biomedical Imaging Center at Weill Cornell Medical College, a $80 million MRI, PET, SPECT, CT and optical imaging facility which currently supports nearly 100 investigators from 15 academic institutions. Over the last seventeen years he has had a leadership role in the development and management of imaging technologies. To date he has over thirty years of experience in the development of imaging biomarkers for the detection, characterization, and therapeutic monitoring of disease. 

Distinctions:

  • First non-invasive quantitative imaging biomarker for the percentage cellularity of human bone marrow. 
  • First demonstration of whole-body imaging of hematologic malignancies with nearly complete discrimination against signal from normal tissue, without the use of injected contrast agents. 
  • First magnetic resonance angiogram (MRA) of human prostate tissue using techniques developed for intact specimen magnetic resonance microscopy (MRM). 
  • First robust quantitative whole-body tracking of adeno-associated viral vector biodistribution in vivo via radioiodination of vector capsids, positron emission tomography, and a compartmental modeling approach to viral vector dosimetry. 
  • First non-invasive quantitative imaging biomarker for anti-capsid immunity to viral vector administration. 

Selected Publications:

Current Areas of Focus

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