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Oklahoma State University

Team Members


Ashish Ranjan, B.V.Sc., Ph.D.
Kerr Chair for Biomedical Laser and Biophotonics

ashish ranjan

Dr. Ranjan earned his BVSc degree (DVM equivalent) from Madras Veterinary College, in Chennai, India. He earned a Ph.D. in Biomedical and Veterinary Sciences from Virginia Tech. Dr. Ranjan then was a Visiting Fellow at the Center for Interventional Oncology, Department of Radiology and Imaging Sciences at the National Institutes of Health.

Dr. Ranjan is the director of the Institute for Translational and Emerging Research in Advanced Comparative Therapy OSU's College of Veterinary Medicine.

Read more about Dr. Ranjan and his research on his Investigator Profile on the Focused Ultrasound Foundation website.

Research Coordinator

Giovanna Picotti

giovanna picotti

Giovanna Picotti has Bachelor of Science in Biology and Minor in Chemistry University from Albany, SUNY.

During her time at the Department of Health, Wadsworth Center in New York her research involved biostatistical analysis of foraminiferan mtDNA for use as a comparator for cox genes within the SAR-supergroup.

Her industry experience was gained at Regeneron Pharmaceuticals, Inc. working in Quality Control to qualify, maintain and retire reference standards for all drugs before transitioning into Quality Assurance where Piccotti gained compliance experience serving as an administrator, reviewing, and approving quality system changes.

Her current research interests are the effects of plant compounds on cancer cells, both directly and in combined treatment modalities.


Harshini K Ashar, BVSc, MVSc

harshini ashar

Dr. Ashar received her BVSc from Nagpur Veterinary College in India and her MVSc from Bombay Veterinary College in India. She is currently a Ph.D. student in the Nanomedicine and Targeted Therapy Lab.

Research interests-: Cancer Immunotherapy, HIFU guided drug delivery

Current project: Investigate the effects of HIFU induced anti-tumor response and immunity and mechanism of abscopal effect in mouse melanoma model.

Michael Gorbet

mike gorbet

Michael-Joseph Gorbet obtained his Bachelor’s of Science degree in Chemistry in 2016, from Southwestern Oklahoma State University, Department of Chemistry and Physics. During his undergraduate education, he was involved in bioinorganic synthesis chemistry making contrast agents and oxidation catalysts for three years. Gorbet also participated in internships at both Georgia Tech University and the University of Hull, UK.

After a year as a Ph.D. student in the Chemistry and Biochemistry department at the University of Oklahoma, he transferred to Dr. Ranjan’s lab at Oklahoma State University as a National Science Foundation Bridge to the Doctorate Fellow and graduate research assistant. 

Gorbet  is a proficient synthetic chemist working with both organic and inorganic chemistry with a future aim in contributing to making a targeted cancer therapy using a nanoparticle-based delivery system.  Specific areas of current work and research interest include:

  • Nanoparticle synthesis for real-time imaging of immune response
  • Organic/Ligand Synthesis with Metal Complexation for cell-based targeting
  • Device induced nanoparticle synthesis for cancer therapy

Akansha Singh

akansha singh

Akansha Singh received her PhD in biomedical engineering focused on tissue engineering and regenerative medicine from the National Institute of Immunology, India.

Her research interests are focused on formulation of multi-component micro- and nano-particles for improved and targeted immunomodulation of tumor microenvironment. Other project involves fabrication of tissue mimicking composite 3D models for improved in-vitro focused ultrasound screening.

 Mohit Singh

mohit singh

Mohit Singh earned his bachelor of veterinary science degree from Madras Veterinary College, India and his master’s in veterinary surgery from GBPUA&T, Pantnagar. He is currently a graduate student.

Singh research interests include:

  • Development of gene delivery nano-system to improve anti-tumor immunity
  • Development of nano drug delivery system for red blood cell targeting and in vivo imaging
  • Understand the impact of HIFU on anti-tumor immune response

Sarang Tartey, Ph.D.

sarang tartey

Dr. Tartey received his Ph.D. in Medical Sciences with specialization in Immunology from the Osaka University, Graduate School of Medicine in Japan (2014). Dr. Tartey also did two postdoctoral fellowships at Kyoto University, Japan (2014-2017) and at St. Jude Children’s Research Hospital, USA (2017-2020), in the field of inflammation and immuno-oncology. Dr. Tartey had published several first author high impact papers in leading journals (Cell, JCI, EMBO, JI) and also gave invited talks in international meetings/conferences.

His research interests are focused on identifying the molecular mechanisms of novel immuno-modulators and combining them with gene and drug delivery systems to improve targeted anti-tumor immunotherapy in patients.

Dr. Tartey currently serves on the reviewer panel of several journals including Journal of Clinical Medicine, International Journal of Molecular Sciences, Biomedicines, Pharmaceuticals, Nutrients, Cancers and Biomolecules.