Month: October 2025

When graduating Ph.D. student Sabrina Pizzaro was an undergraduate biology major at North Greenville University, she participated in the Biology National Science Foundation – Research Experience for Undergraduates (NSF-REU) here at Clemson working with G&B’s Dr. Hong Luo. Though Luo’s specialty – plants – might not have sparked Sabrina’s interest, Clemson, the department and the Eukaryotic Pathogens Innovations Center (EPIC) did!

“It was a great experience! I loved the environment of the campus and knew I wanted to come back. I knew I was interested in some of the EPIC labs, so I got to meet with a handful of professors I was interested in working with, including Dr. Jim Morris. There was research that interested me, and I would be within an hour of both mine and my husband’s families; it seemed like a perfect fit!”

Sabrina arrived on campus in Fall 2019 and began courses, research and TA work.

“I taught in the teaching labs for three years! Getting to interact with our undergraduate students was truly an honor; we have amazing students in our program.”

Sabrina’s Ph.D. research in EPIC focuses on Trypanosome brucei, the parasite that causes African Sleeping Sickness. In these parasites, glycolysis occurs within specialized peroxisomes, called glycosomes, rather than in the cytosol, and the bloodstream form of the parasite is completely reliant on glycolysis for ATP production.

“Our lab focuses on how to target the glycolytic pathway. I’ve worked on two main projects; one where I have studied using peroxisomal targeting sequences to traffic drugs into the glycosome where they can inhibit glycolytic enzymes and the other where I studied two putative proton transporters involved in regulating the pH of the glycosome.”

Something other than coursework and research that has been a prevalent part of Sabrina’s time at Clemson is the Genetics and Biochemistry Graduate Student Association (GBGSA).

“For the past few years, I’ve served on the leadership team for the GBGSA. The main goal of GBGSA is to foster community within our graduate student body, and that goal really resonates with me. I think that community is incredibly important in every aspect of life, and grad school is far from an exception to that rule.”

When not on campus, Sabrina loves to bake sourdough, watch Clemson Women’s gymnastics, rock climb, lead worship at church, grow carnivorous plants, crochet amigurumi and design nail art.

On October 22nd, Sabrina presented her Ph.D. defense titled Exploring Glycosomes as Therapeutic Targets for Trypanosome brucei and will graduate this December.

Today, October 20 is World CRISPR day, the day CRISPR was first used to edit a human genome — was established to celebrate its transformative impact on science, medicine and biotechnology.

CRISPR, which is short for Clustered Regularly Interspaced Short Palindromic Repeats, is a powerful gene-editing technology that research scientists use to selectively modify the DNA of living organisms so they can study gene function in disease, develop diagnostic tests and identify novel treatments. 

CRISPR was discovered in bacterial immune systems and works by acting when a virus attacks, save tiny pieces of the viral bacterial DNA. The next time the virus appears, the bacteria use CRISPR and a protein called Cas9 to locate and destroy the invader’s DNA.

For World CRISPR Day Clemson News highlighted two of the department’s faculty who use CRISPR in their research to advance human health.

Stephen Dolan

Dr. Stephen Dolan’s lab focuses on Aspergillus fumigatus, a fungal pathogen responsible for serious infections, particularly in immunocompromised individuals. By generating and studying fungal mutant strains using CRISPR, Dolan’s team investigates how Aspergillus responds to infection-relevant stressors and antifungal treatments.

“CRISPR has allowed us to move beyond the well-adapted lab strains we used to rely on. Now we can edit genes in pathogens taken directly from patients or the environment to better understand how they survive and cause disease,” he said.

Jennifer Mason

Dr. Jennifer Mason works on DNA damage and repair, studying how cells respond to DNA damage, including damage caused by sunlight exposure. 

Mason obtains cancerous and non-cancerous cell lines from human patients and predicts the genes essential for that DNA repair. She then uses CRISPR-Cas9, an enzyme, to knock the gene out. Once the gene is knocked out, she monitors a mutant or knockout cell line to see if the cell can still repair DNA damage. 

Before CRISPR, many DNA repair experiments that make specific changes or knockouts would not have been feasible due to cost and time. 

“I got my Ph.D. in human genetics in 2010, and we were limited to the availability of patient cell lines where patients with these disorders consent to having skin biopsies taken,” Mason says. 

Read more in the Clemson News article.

Associate professor Rajan Sekhon along with a team of researchers at Clemson University and partner organizations have received a $2.4 million, four-year grant to map genes that control leaf senescence in corn. Funded by the National Science Foundation through both the Plant Genome Research Program and the Cross-Directorate Activities program, this project aims to sustain photosynthesis longer, improve yield stability and support smarter on-farm nitrogen use.

“Our goal is to set the timing of leaf senescence so plants stay productive when it counts and still finish cleanly for harvest, which can also help keep more nitrogen working on the farm,” Sekhon said.

This project will determine when senescence, which is the aging process where plants recycle nutrients, begins and how quickly it proceeds. Sekhon’s group will map the genes and regulatory switches that control senescence by using a systems genetics approach that integrates physiology, metabolomics, transcriptomes, chromatin accessibility and single cell RNA sequencing. Artificial intelligence, primarily large language models (LLMs) and machine learning, along with advanced statistical methods, will combine these data to pinpoint genes and regulatory switches that set senescence timing in corn and possibly other crops.

“While we’re focused on the process of senescence, we are developing methods and datasets that can translate to other traits and crops,” he said.

Nitrogen is essential for protein formation in corn because it is a fundamental component of amino acids, the building blocks of all proteins.

“Most kernel protein is storage protein with limited amino acid balance, so lowering total kernel protein does not automatically reduce nutritional value. If we get the timing of leaf senescence right, we can keep yield steady and, over time, help more nitrogen remain on the farm.”

Read more in the Clemson News article.

If you haven’t already, you’ll probably spot freshman biochemistry student Jackson Miller on the paint line at Clemson games, whether it’s on the jumbotron or even on ESPN. Jackson is passionate about all things Clemson, Disney, sports, family and his future dentistry career.

“Originally from the small town of Lake Wylie, SC located just outside of Charlotte, NC, I come from a small family of four that brings me constant joy and laughter. We are probably the biggest Disney fans on the face of Earth. This Christmas I will be making my 24th trip and I couldn’t be more excited since I will be there on Christmas day for the first time.”

Jackson attended a small private Christian school called Gaston Christian School with only 1,000 students from kindergarten through 12th grade. This small, tight-knight community is what led him to Clemson.

“That is what played a huge role in my college search. I wanted to find a college that gave me that same feeling as my school back home, family. Clemson was just that for me. As soon as I walked on campus, I could feel the love and family.”

Since being on campus for a few months, he has found everyone to be friendly and loves the people and connections made so far from in the Shoeboxes to Central Spirit, which is the club that Jackson has gotten most involved in.

“Central Spirit is such a great and tight community where we are constantly having fun. That being from yelling at games in hopes of helping our Tigers to victory or goofing off while at flag practice. The community has welcomed me so quickly and it has been such a blessing to have these people in my life.”

As an aspiring orthodontist, the biochemistry department seemed like a perfect fit for Jackson, providing the perfect blend of chemistry and biology. It is also a huge plus that our program is an excellent preparer for the DAT.

“I have met so many dentists and orthodontists telling me how it is a great program here at Clemson and a great way to be prepared for a dental school wherever I end up. The hope is to be able to help other kids like my sister feel more confident with their smiles and less scared of the people behind the mask at the dentist office.”

Now almost halfway through his first semester, Jackson is enjoying college life, getting involved in organizations and immersing himself in his studies.

“It is a true blessing to be at the school I wanted to be at more than anywhere else.”