RISE-ing Stars From Northern Arizona University

Posts by Abbey Bigler-Coyne

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Chantel wearing a traditional Native American dress and holding a graduation cap. — Chantel Tsosie at her college graduation, wearing her Tribe’s formal, traditional rug dress that her grandmother made. Credit: Courtesy of Chantel Tsosie.

“Science is for everyone. It’s in everything. It exists in cultures everywhere,” says Chantel Tsosie, a master’s student in the NIGMS-supported Research Initiative for Scientific Enhancement (RISE) program at Northern Arizona University (NAU) in Flagstaff. The program aims to prepare a diverse group of students for research careers through culturally relevant support, hands-on research experiences, and a tailored curriculum.

Chantel started her bachelor’s studies at NAU as a dental hygiene major and later changed her focus to biomedical sciences. “I’m from the Navajo Nation, and growing up on the reservation, I wasn’t really exposed to research as a career. At NAU, I began taking classes like microbiology and chemistry and found that I loved the lab portions of those. I met scientists who were Indigenous and really started looking up to them,” she says. When a faculty member brought RISE to her attention, she was immediately interested and reached out to its leaders, Catherine Propper, Ph.D., and Anita Antoninka, Ph.D.

December 27, 2023December 27, 2023

Ring In the New Year With Basic Research

by Abbey Bigler-Coyne

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Empowering basic biomedical research, which focuses on understanding how living systems work, is one of NIGMS’ main goals. This type of research not only helps us learn how our bodies and those of other organisms function but also lays the foundation for advances in disease diagnosis, treatment, and prevention.

We’re excited to see what the upcoming year has in store for the field! In preparation, we’re highlighting what NIGMS-supported scientists had to say in 2023 about the many merits of basic research. Also check out the links to the Biomedical Beat posts that feature them if you haven’t already.

December 13, 2023January 9, 2024

Science Snippet: Zooming In on Nanoparticles

by Abbey Bigler-Coyne

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A circle divided into six different, brightly colored slices, each with a different style of nanoparticle. In the center is a gray circle with the word nanoparticles. — Nanoparticles come in many different shapes and configurations. Credit: Adapted from Stevens, et. al., under Creative Commons License 4.0.

Nanoparticles may sound like gadgets from a science fiction movie, but they exist in real life. They’re particles of any material that are less than 100 nanometers (one-billionth of a meter) in all dimensions. Nanoparticles appear in nature, and humans have, mostly unknowingly, used them since ancient times. For example, hair dyeing in ancient Egypt involved lead sulfite nanoparticles, and artisans in the Middle Ages added gold and silver nanoparticles to stained-glass windows. Over the past several decades, researchers have studied nanoparticles for their potential uses in many fields, from computer engineering to biology.

A nanoparticle’s properties can differ significantly from those of larger pieces of the same material. Properties that may change include:

November 22, 2023May 28, 2024

What Is Antibiotic Resistance?

by Abbey Bigler-Coyne

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Large clumps of blue, spherical bacteria on a rough, green surface. — Antibiotic resistance is a risk for patients undergoing joint replacement surgery, for example, when the bacteria *Staphylococcus aureus* group together (blue) and attach to the surface of the implant (green). Credit: Tripti Thapa Gupta, Khushi Patel, and Paul Stoodley, The Ohio State University; Alex Horswill, University of Colorado School of Medicine.

Bacteria can cause many common illnesses, including strep throat and ear infections. If you’ve ever gone to the doctor for one of these infections, they likely prescribed an antibiotic—a medicine designed to fight bacteria. Because bacteria can also cause life-threatening infections, antibiotics have saved many lives. However, the widespread use of antibiotics has fueled a growing problem: antibiotic resistance.

Antibiotic-resistant bacteria can survive some or even all antibiotics. Other microorganisms, including fungi, can similarly become resistant to the medicines that are used to treat them. Infections from these microorganisms affect many people and are difficult to treat. According to the Centers for Disease Control and Prevention, in the U.S. alone, resistant bacteria and fungi infect 2.8 million people each year, and more than 35,000 die as a result.

October 4, 2023October 4, 2023

Claira Sohn Cultivates Neurons and Diversity in the STEM Community

by Abbey Bigler-Coyne

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Credit: Courtesy of Claira Sohn.

Claira Sohn credits her grandfather with sparking her interest in science. Although he never studied science at a 4-year university due to financial limitations, he took many community college classes and worked in chemistry labs developing products such as hair dyes and dissolvable stitches. “Every morning, my grandfather would take me to school, and we’d stop to get orange juice and a cookie and talk about science. When I was in elementary school, he bought me a book about quantum mechanics written for kids,” she says. “He inspired me to ask questions and encouraged me to go to college.”

Claira enrolled at Northern Arizona University in Flagstaff after graduating high school. She majored in biomedical sciences and planned to become a medical doctor until her microbiology professor talked to her about the possibility of a research career. “That was an epiphany for me, because while I knew that there was research going on in the world, I didn’t realize there could be a place for me there,” Claira says. During her junior year, she joined the lab of Naomi Lee, Ph.D., where she first experienced what it felt like to be a researcher.

September 13, 2023September 13, 2023

Quiz: Sepsis Science

by Abbey Bigler-Coyne

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Many oblong bacteria, some with a narrow band near their middle. — Bacteria are the most common triggers of sepsis.
Credit: Mark Ellisman and Thomas Deerinck, National Center for Microscopy and Imaging Research, University of California San Diego.

At least 1.7 million adults in the United States develop a life-threatening condition called sepsis each year. Sepsis is an overwhelming or impaired whole-body immune response that’s most often caused by bacterial infections. However, it can also be caused by viral infections, such as COVID-19 or influenza; fungal infections; or other injuries, including physical trauma. Anyone can get sepsis, but there’s a higher risk for some people, such as those who are ages 65 and older, who have certain medical conditions, or who have recently experienced severe illness or hospitalization.

The early symptoms of sepsis can include fever, chills, rapid breathing or heart rate, disorientation, and clammy or sweaty skin. Because other conditions also have these symptoms, sepsis can be difficult to diagnose. NIGMS-supported researchers are working to increase our understanding of sepsis so that doctors can identify it more quickly and treat it more effectively.

July 5, 2023

Science Snippet: Antioxidants Explained

by Abbey Bigler-Coyne

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A spread of antioxidant-rich foods such as strawberries, kale, lemon, spinach, blueberries, tomatoes, parsley, grapefruit, carrots, and legumes. — Many types of fruits, vegetables, and legumes are rich in antioxidants. Credit: iStock.

While at the grocery store, you’ve likely noticed foods with labels saying they contain antioxidants, but what does that mean? In short, antioxidants are substances that may prevent or delay some types of cell damage. Many foods, including fruits and vegetables, naturally produce antioxidants like vitamins C and E, beta-carotene, and selenium. Our bodies also naturally produce antioxidant molecules such as alpha-lipoic acid, glutathione, and coenzyme Q10.

Antioxidants are united by their ability to donate electrons, which helps them protect the body against reactive oxygen species (ROS). ROS form naturally during exercise, when your body converts food into energy, or during exposure to certain environmental factors such as cigarette smoke, air pollution, and sunlight. These molecules can “steal” electrons from other molecules, and though they aren’t always harmful, consistently high amounts of ROS in your body can cause a condition known as oxidative stress that can damage cells. That cell damage may also lead to chronic diseases, especially if ROS steal electrons from DNA or other important molecules and alter their functions.

June 7, 2023June 7, 2023

Slideshow: Breathtaking Brains

by Abbey Bigler-Coyne

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The average human brain is only about 3 pounds, but this complex organ punches well above its weight, acting as the control center for the whole body. Many of the brain’s intricacies still aren’t fully understood. To gain more insight into brain processes, scientists often peer into the brains of research organisms such as fruit flies and mice. These organisms have shed light on how our brains maintain circadian rhythms, how neuropsychiatric disorders develop, and more.

May 31, 2023

Investigating Bacteria’s CRISPR Defense System to Improve Human Health

by Abbey Bigler-Coyne

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Credit: Adrian Sanchez Gonzales.

The earliest Andrew Santiago-Frangos, Ph.D., remembers being interested in science was when he was about 8 years old. He was home sick and became engrossed in a children’s book that explained how some bacteria and viruses cause illness. To this day, his curiosity about bacteria persists, and he’s making discoveries about CRISPR—a system that helps bacteria defend against viruses—as a postdoctoral researcher and NIGMS-funded Maximizing Opportunities for Scientific and Academic Independent Careers (MOSAIC) scholar at Montana State University (MSU) in Bozeman.

Becoming a Biologist

Although Dr. Santiago-Frangos wanted to become a scientist from a young age and always found biology interesting, by the time he was attending high school in his native country of Cyprus, he had developed a passion for physics and thought he’d pursue a career in that field. However, working at a biotechnology company for a summer changed his mind. “That experience made me want to dive into biology more deeply because I could see how it could be directly applied to human health. Physics can also be applied to human health, but, at least at that time, biology seemed to me like a more direct way to help humanity,” says Dr. Santiago-Frangos.

April 5, 2023April 5, 2023

Photo Quiz: Puzzles in Purple

by Abbey Bigler-Coyne

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To make naturally colorless biological structures easier to study, scientists often use fluorescent tags and other tools to color them. Here, we feature images with purple hues and pair them with questions to test your knowledge of basic science concepts.

Visit our image and video gallery for more scientific photos, illustrations, and videos in all the colors of the rainbow.

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Author: Abbey Bigler-Coyne

Posts by Abbey Bigler-Coyne