91ÑÇÉ«´«Ã½

Award

Using crystallography to answer questions of structure and function

Caroline Soliman wins JBC/Tabor Young Investigator Award
Kerri Beth  Boggs
March 1, 2019

Caroline Soliman discovered her love for lab work as an undergraduate studying biomedical science at Monash University in Melbourne, Australia. She thrived on doing hands-on work to answer the question “What’s my goal, and how am I going to get there?”

 

Caroline SolimanThe findings of Caroline Soliman’s team are crucial for understanding the function of carbohydrate-binding human antibodies as potential microbial therapeutics.

Now a graduate student at the Royal Melbourne Institute of Technology, or RMIT, Soliman won a 2019 Journal of Biological Chemistry/Herbert Tabor Young Investigator Award for her work on the structural characterization of antibody candidates that recognize carbohydrates for immunotherapy for infection.

Soliman earned an honors degree at Monash University through the Burnet Institute. For her thesis, she worked with , now her dissertation mentor, to develop a peptide-based inhibitor to mimic the binding of a microbial protein to immunoglobulin A. The project sparked an interest in crystallography.

“I gained an appreciation for the importance of structure in terms of function,” she said.

After a short break from research, Soliman returned to Ramsland’s lab for her doctoral training at RMIT. Together, they crafted a project with translational benefits and an international collaboration with Gerald Pier of Harvard Medical School that would give Soliman the chance to develop her crystallography skills.

“My supervisor has been very supportive and encouraging,” she said, adding that Ramsland helped her navigate the roadblocks of learning crystallography, teaching her how to collect data from the Australian Synchrotron and walking her through the process of solving a crystal structure.

When not solving crystal structures, Soliman can be found in the kitchen baking cakes, tarts and other sweet treats. She also enjoys reading, swimming at the beach and spending time with her family in Melbourne.

After completing her Ph.D., Soliman hopes to pursue a career in research and to teach immunology.

“It’s really important to do something you enjoy,” she said.

Fighting antibiotic resistance with antibodies

Antibiotics are used to fight bacterial infections, but antibiotic resistance has created a need for alternative therapies. Many of the antibiotic-resistant bacteria prioritized for therapeutic development are known to form biofilms, sticky aggregations of microbes that act as an additional barrier against antibacterial therapies.

Therapeutic antibodies are a strong candidate to overcome both antibiotic resistance and barriers such as bacterial biofilms. Humans typically develop protective antibodies to bacterial carbohydrates as a result of infection, so researchers have focused on carbohydrate-binding antibodies. Specifically, the human antibody F598 is being tested in the clinical setting because it can elicit protective activities after binding to the microbial carbohydrate poly-N-acetyl-D-glucosamine, or PNAG, which is a polymer of N-acetyl-D-glucosamine, or GlcNAc, units.

To understand how this antibody targets PNAG, Caroline Soliman and colleagues defined the structural basis for recognition of PNAG by F598. They determined crystal structures for the antibody-binding fragment, or Fab, of F598 and its complexes with two carbohydrates, GlcNAc and a PNAG oligosaccharide. They found that the Fab binds to extracellular polysaccharide in biofilms and to PNAG on the surface of Staphylococcus aureus.

This was the to report the structural basis for human antibody recognition of PNAG.

Enjoy reading 91ÑÇÉ«´«Ã½ Today?

Become a member to receive the print edition four times a year and the digital edition weekly.

Learn more
Kerri Beth  Boggs

Kerri Beth Boggs is a graduate student in the biochemistry department at the University of Kentucky.

Get the latest from 91ÑÇÉ«´«Ã½ Today

Enter your email address, and we’ll send you a weekly email with recent articles, interviews and more.

Latest in People

People highlights or most popular articles

Sung honored for research; Sliger, Young named astronaut scholars
Member News

Sung honored for research; Sliger, Young named astronaut scholars

Dec. 23, 2024

Patrick Sung receives the 2024 Basser Global Prize from the Basser Center for BRCA at Penn Medicine. A foundation created by Mercury 7 astronauts awards scholarships to Shelby Sliger and Tara Young.

‘Our work is about science transforming people’s lives’
Interview

‘Our work is about science transforming people’s lives’

Dec. 17, 2024

Ann West, chair of the 91ÑÇÉ«´«Ã½ Public Affairs Advisory Committee, sits down Monica Bertagnolli, director of the National Institutes of Health.

Pernas named fellow; Heitman and Wu elected to NAM
Member News

Pernas named fellow; Heitman and Wu elected to NAM

Dec. 16, 2024

Lena Pernas is named a fellow by the David and Lucile Packard Foundation. Joseph Heitman and Hao Wu are inducted into the National Academy of Medicine.

Awards for Maquat and Gohil; Sobrado named biochem chair
Member News

Awards for Maquat and Gohil; Sobrado named biochem chair

Dec. 9, 2024

Vishal Gohil is honored for work with copper. Lynn Maquat receives two awards for RNA research. Pablo Sobrado is named endowed chair of biochemistry.

What seems dead may not be dead
Award

What seems dead may not be dead

Dec. 4, 2024

Vincent Tagliabracci will receive the Earl and Thressa Stadtman Distinguished Scientist Award at the 91ÑÇÉ«´«Ã½ Annual Meeting, April 12–15 in Chicago.

'You can't afford to be 15 years behind the parasite'
Award

'You can't afford to be 15 years behind the parasite'

Dec. 3, 2024

David Fidock will receive the Alice and C.C. Wang Award in Molecular Parasitology at the 2025 91ÑÇÉ«´«Ã½ Annual Meeting, April 12–15 in Chicago.