Dr. Robin McCann

Research Interests

Faculty/Student Research in STEM

My research interests range from understanding molecular mechanisms of disease, identification and quantitation of biomolecules in organisms (analytical biochemistry), and understanding effects of chemicals on organisms (pharmacology/toxicology). I am also working with the Cumberland County Forensic Laboratory as an analytical consultant and therefore have some research projects that might seem surprising for a chemist!  Since my interests are varied, my research group is also varied. Here I describe three separate ongoing projects we work on.  All these projects are worked on with students (listed at the end) and me together.  Chemistry research requires faculty and students to work together on shared projects.

Determination of the signaling pathway leading to tight junction disassembly in diabetic retinopathy: This project is continued work that I started when working in the biomedical research community before coming to teach at Shippensburg. The project is designed to elucidate the molecular mechanisms that cause Diabetic Retinopathy. Diabetic Retinopathy is a complication that arises in many diabetics and is the leading cause of adult blindness. Diabetic retinopathy occurs when tight junctions between retinal cells disassemble due to the activation of a specific signaling cascade. Disassembly results in leaky blood vessels and retinal damage. More specifically, the signaling cascade causes phosphorylation of several tight junction proteins including zonula-occludin 1 (ZO-1). Phosphorylation causes a conformational shift of the protein complex leading to disassembly and increased permeability of the tight junctions. This research aims at elucidating the molecular mechanisms that lead to tight junction breakdown specifically investigating the Mitogen Activated Protein Kinase (MAPK) signaling cascade.

Using Gas Chromatography Mass Spectrometry (GC/MS) to determine levels of TTX and its links to the life history of the Eastern Newt, Notophthlmus viridescens: Tetrodotoxin (TTX) is one of the most lethal non-protein neurotoxins. This neurotoxin is produced by many organisms including the Eastern Newt (Notophthalmus viridescens). This ubiquitous eastern North America species secretes TTX from glands located throughout its skin. The TTX is lethal, or at least highly toxic, to many of the Eastern Newt’s predators, so it acts as an anti-predatory mechanism. To date, there is no reliable technique for quantifying this toxin, and additionally little is known about its chemical levels in different stages of the Eastern Newt’s complex life cycle. A protocol for  Single Ion Monitoring (SIM) GC/MS analysis is being developed to quantify the amount of TTX secreted by Eastern Newts in the adult/reproductive stage of their lives. Once the TTX protocol is optimized, it will be used on a population of Eastern Newts at Letterkenny Army Depot, South Central Pennsylvania, to determine ontogenetic (egg, aquatic larvae, eft, adult), size (small, medium, large), and sexual (male, female) variation in toxicity levels in collaboration with Dr. Delis of the SU biology department. Ultimately, this research aims to unveil ontogenetic, morphometric, and sexual chemical distinctions that might explain the ecological and evolutionary significance of this interesting chemical adaptation of the Eastern Newt.

Development of fingerprints on fired bullet casings: This project is just starting up in my research group. I have previously developed and validated protocols for the Cumberland County Forensic Laboratory toxicology section as an analytical consultant. The lab is located approximately 30 minutes from campus. Currently, the lab needs help in the latent print division with protocols using Vacuum Metal Deposition (VMD) in combination with chemical dyes to develop fingerprints.  We are specifically looking at fingerprints on bullet casings that have already been fired which are difficult to work with.  Students working on this project travel to the county lab and work closely with the forensic technician to learn to use the equipment and collect data.

Research Students:

• 2024-2025
  Madelyn Porter
  Alivia Snyder
  Owen Leese
• Summer 2024
  Owen Leese
  Mara Connolly
  Ryan Mills
• 2023-2024
  Luke Parker
  Kylee Frey
• Summer 2023
  Jaden Perrin
  Cora Zimmerman
• 2022-2023
  David Williams
  David Beres
  Kayla Kunkel
• 2021-2022
  Kayla Kunkel
  Aly Fulton
  Alena Dobbs
• 2020-2021
  Stephanie Barnet
  Janine Ocker
• 2019-2020
  John Markey
• 2018-2019
  Maura Kreiser
  Caitlyn Dull
• 2017-2018
  Rachel Shaffer
  Dylan Schreiner
• 2016-2017
  Olivia Ogline
• 2015-2016
  Drew Deardorff
• 2014-2015
  Heather Winter
  Sarabeth Riley
  Selina Prettner
  Heather Greenburg
• 2013-2014
  Kelcie Zegalia
• 2011-2012
  Nicole Walters
• 2010-2011
  Jason Unrath
• 2009-2010
  Matthew Pauly
  Jordan Shick
  Keri Kimes
• 2008-2009
  Jennifer Patterson
  Jordan Shick
  Eric Thomas
• 2007-2008
  Laura Hock
  Beth Zucconi
• 2006-2007
  Dan Mayo
• 2005-2006
  Richard Eide

Publications

• ELISA Drug Screen Whole Blood and Serum Tox-7. Prepared for Toxicology Division of the Cumberland County Forensic Laboratory.  Licensed by PA Department of Health August, 2015.
• Armstrong, A., Bryant, S., McCann, R. McGivney, K. 2015. How to Combat Unconscious Bias,  MAA Focus, April/May 2015.  pp.10-12
• Quantitation of THC and metabolites Tox-5.  Prepared for Toxicology Division of the Cumberland County Forensic Laboratory.  Licensed by PA Department of Health May, 2014.  
• Ethyl Alcohol Analysis by GC/HS Tox-3 Prepared for Toxicology Division of the Cumberland County Forensic Laboratory.  Licensed by PA Department of Health August, 2012  
• Drug Screen Analysis with EMIT Tox-2.  Prepared for Toxicology Division of the Cumberland County Forensic Laboratory.  Licensed by PA Department of Health August, 2010  
• Ethyl Alcohol Analysis by EMITTox-1  Prepared for Toxicology Division of the Cumberland County Forensic Laboratory. Licensed by PA Department of Health August, 2009
• Rannels, S.R., McCann, R.A., Wolpert, E.B. 1995. Extracellular matrix stimulates Vitamin K-dependent function in type II cells.  Abstract Am. J. Respir. Dis. 151:A801.
• Veloski, Charlotte A., McCann, Robin A., Snow, Julian W. 1994. An analytical model for the phase behavior of cholesteryl esters in intracellular inclusions. Biochimica et Biophysica Acta 1213: 183-192.
• Larach, D.R., Schuler, H.G., Zangari, K.A., McCann, R.L. 1994.  Potassium channel Opening and Coronary Vasodilation by halothane. Advances in Pharmacology 31:253-267.

Personal Interests

When I went to college I was certain I was headed to medical school so I chose to be a biochemistry major in a chemistry department because it was the best way to meet this goal. I did enjoy my high school chemistry and biology classes, so it seemed an obvious choice. It wasn’t until my senior year, after already applying and being accepted to medical school that I started to question my resolve to follow this career path. I chose to take a 1 year break and work as a biochemist in a research lab at Penn State College of Medicine, in Hershey PA studying the effects of anesthetics on cardiac vasculature. It was during this year of work and reflection that I truly acknowledged my true passion to understand and study the biochemical principles of medicine. I entered the PhD program at Penn State, College of Medicine earning my degree in 5 years while starting my family.  I had a second career trajectory change after working as a Post Doc in a large lab that was studying Diabetic Retinopathy. It was at this point that I discovered my passion for teaching. This ultimately led to my work at SU teaching the subject I love- Biochemistry. I am so pleased to have a job that is both rewarding and exciting!

Although I love my students and my work, I believe it is important to have a good work life balance. I view my scientific work as more of a lifestyle than simply a career, so many of my favorite activities outside of research and teaching still include science. I have served as a merit badge counselor in my sons boy scout troop over many years as well as running a camp for young chemists (8-11years old) each summer and am now starting up a forensic camp for high school students on our campus. I also enjoy visiting local elementary schools and day cares to do science with children.

I do take time for myself as well, reading books (favorite book- Harry Potter and the Order of the Phoenix), gardening, swimming, going to movies (all about Star Wars) and taking walks with my dogs. My two children are grown now so one of my favorite actives is taking them out to lunch to hear all about what is going on in their lives.  My husband and I are getting back into hiking, camping, and traveling abroad. I think that my most calming place to visit is the ocean which can be hard to find in central PA- so trips to the beach are always a summer favorite.