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Team Members

Or Shemesh , PhD

Or Shemesh , PhD

Principal Investigator

Or is now pursuing making tools for the diseased brain, with an emphasis on neurodegeneration. He won numerous awards, including the NIH Trailblazer Award for Early Stage Investigators, the Chorafas Prize by the Karolinska institute, the Simons foundation, and has already been funded by the Reeves Foundation for blindness research, the NIH for Alzheimer’s research and the Pitt Alzheimer’s Disease Research Center for tauopathy research. In Counter-Disease Engineering, Or is building and leading a diverse, multicultural, impact driven and FUN group.

Sandeep Singh, PhD

Sandeep Singh, PhD

Postdoctoral Scholar (HUJI)

Sandeep investigates how microorganisms contribute to neurodegenerative diseases like Alzheimer’s and Parkinson’s, using expansion microscopy (ExM) to visualize their interactions with neural tissues at nanoscale resolution with a focus on gender-specific mechanisms and also to identify novel therapeutic targets tailored to these differences.

Chaoming Zhou , MD

Chaoming Zhou , MD

Research Scientist (PITT)

Chaoming has worked at the University of Pittsburgh for more than twenty years in the departments of pharmacology, plastic surgery, and physical medicine & rehabilitation. She possesses a broad range of knowledge and expertise with laboratory techniques, especially in molecular biology, protein chemistry, and cell signaling.

Esther Silberberg , PhD

Esther Silberberg , PhD

Research Scientist (HUJI)

Esther is working on establishing a definitive correlation between viral infection and Parkinson's Disease pathogenesis, and plans on diving deep into the causative mechanisms of this correlation. Given the widely known idiom “knowing the sickness is half the cure”, she hopes to uncover potential mechanisms of manipulating this process.

Alexandra Kior, MSc

Alexandra Kior, MSc

Graduate Student (HUJI)

Alexandra works on applying Expansion Microscopy (ExM) to study neurodegenerative diseases, with a current focus on amyotrophic lateral sclerosis (ALS). Her projects involve processing human brain and spinal cord tissues. By labeling specific proteins, including viral markers, she aims to investigate pathological changes at high resolution. Her work integrates histological preparation, fluorescence microscopy, and image analysis to explore cellular and molecular alterations underlying neurodegeneration.

Zena Azem, MSc

Zena Azem, MSc

Graduate Student (HUJI)

Zena's work in the lab involves working with genetically encoded nanoparticles. The ability to manipulate these nanoparticles at the genetic level opens up a plethora of possibilities in the fields of medicine and biotechnology, making Zena's contributions to the lab both crucial and impactful.

Amanda Lin

Amanda Lin

LAB ALUMNI

Amanda Lin is a senior undergraduate student at the University of Pittsburgh majoring in Neuroscience and Mathematical Biology. Currently, she works with Krishnaishis Chatterjee in his research synthesizing nanoparticles and working with modRNA. 

Sarah Seman

Sarah Seman

LAB ALUMNI

Currently, Sarah is pursuing her PhD in biomedical engineering at the Ohio State University. Her work focuses on sarcoidosis as she designs a 3D disease model based on an earlier 2D version. Sarah’s research goals focus on using an engineering-minded problem solving approach to solve biological challenges.

Greg Fisher

Greg Fisher

LAB ALUMNI

Greg Fisher is a shared co-member of the Dr. Or Shemesh laboratory in the neurobiology department at the University of Pittsburgh and the Dr. Bruce Armitage laboratory in the chemistry department of Carnegie Mellon University. He collaborates on projects involving adult brain cultures composed of neurons, glia and microglia.

Krishnashis Chatterjee , PhD

Krishnashis Chatterjee , PhD

Postdoctoral Scholar (PITT)

Krish is a postdoctoral research associate in the Counter Disease Engineering group. He has always been fascinated by the complexities and mysteries of human brain and his work in the lab is focused on interdisciplinary research, at the intersections of biology, physics, and engineering. Presently, Krish is leading projects focused on building genetically encoded nanotechnological tools (with applications in cancer therapy and super resolution imaging) and gene therapy for glial cells in brain with post baccalaureates and undergraduate students working under his supervision.

Yasmeen Bakhatan, PhD

Yasmeen Bakhatan, PhD

Postdoctoral Scholar (HUJI)

In the lab, Yasmeen works on the design and development of brain-penetrating antibiotic systems aimed at treating resistant and polymicrobial brain infections. Her current project focuses on the synthesis of hybrid antibiotic.

Juan R. Fernandez , BSc

Juan R. Fernandez , BSc

Research Scientist (PITT)

Juan Fernandez is a University of Pittsburgh post-baccalaureate. He is presently working on  projects focused on understanding neurodegenerative disease causality and mechanism by way of expansion microscopy for enhanced tissue visualization. 

Juan leads his own project which explores the role of the brain microbiome and Alzheimer’s Disease pathologies. He has also collaborated with Vanesa Hyde in exploring the role of pathogenic infection in disease progression and understand the role of pathological tau.

Michael Ferrone, PhD

Michael Ferrone, PhD

Graduate Student (PITT)

Michael is using AAVs to express soma-targeted opsins in an effort to restore vision in cases of retinal degeneration.

Brandon Fisher, MSc

Brandon Fisher, MSc

Graduate Student (PITT)

By leveraging machine learning techniques such as random forest classifiers, Brandon develops predictive models to help identify individuals at risk for neurodegenerative diseases, enabling earlier detection and intervention.

Vanesa R.  Hyde

Vanesa R. Hyde

LAB ALUMNI

Vanesa's projects previously focused on the infectious etiology of neurodegenerative diseases - namely Alzheimer's disease. Using primarily expansion microscopy and cell culture modeling, her work demonstrated that Herpes Simplex Virus 1 (HSV-1) triggers tau phosphorylation via the cGAS-STING pathway in the brain.

Currently, Vanesa is pursuing her PhD in neuroscience at Thomas Jefferson University in Philadelphia, Pennsylvania.

Sean Carmody

Sean Carmody

LAB ALUMNI

Sean Carmody is a senior undergraduate student at the University of Pittsburgh majoring in Computational Biology. He is currently working on a project utilizing new technologies to better trace cells in live tissue. 

Claire MacGibbon

Claire MacGibbon

LAB ALUMNI

Claire graduated from the University of Pittsburgh in 2023 with a BSc in emergency medicine with a minor in chemistry. She served as a research assistant in the summer of 2021 where she aided in optimizing the expansion microscopy protocol during the initial stages of the lab. Claire currently works as a paramedic. She intends to apply to medical school in the upcoming cycle.

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