Investigating the Primary Cilium: Q&A With Xuecai Ge

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A headshot of Dr. Xuecai Ge.
Credit: Courtesy of Dr. Xuecai Ge.

The brain is a large and complex organ, but some very small structures guide its development. Xuecai Ge, Ph.D., an associate professor of molecular and cell biology at the University of California, Merced (UC Merced), has devoted her career to understanding one of these structures called the primary cilium. In an interview, Dr. Ge shared how her childhood experience inspired her to study science and what makes the primary cilium fascinating.

Q: How did you first become interested in science?

A: When I was a little kid, my mom was a primary care doctor, and I saw her treat patients in our community. I noticed that no matter who got a particular illness, she could use the same medicine to treat them. My little mind was amazed that the same medicine could work for so many different people! I think this early experience planted the original seed of my interest in life science.

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What Is the Microbiome?

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Have you ever noticed a skin care product advertised as “microbiome friendly” and wondered what that meant? The microbiome is the collection of all the microbes—including bacteria, viruses, and fungi—that live in a specific environment, such as on the skin or in the digestive tract.

Escherichia coli bacteria shown as several brown, oblong ovals.
Escherichia coli (E. coli) is a bacterial species commonly found in the human intestine. While some strains of E. coli cause foodborne illness, others are helpful members of the gut microbiome.
Credit: Mark Ellisman and Thomas Deerinck, National Center for Microscopy and Imaging Research, University of California, San Diego.

It’s a common misconception that all microbes are harmful—in truth, much of the human microbiome is made up of microbes that form beneficial symbiotic relationships with us. Microbiome-friendly skin care products don’t have antimicrobial properties that could harm the beneficial bacteria that live on our skin.

Your Microbiome and You

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Science Snippet: Examining Enzymes

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An enzyme shown as a connected complex of colored ribbons and flat sheets.
Structure of a pyruvate kinase, an enzyme that adds a phosphate group to adenosine diphosphate (ADP) to make adenosine triphosphate (ATP). Credit: PDB 7UEH.

Every day, our cells must produce all the various molecules they need to stay alive. But the chemical reactions to create these molecules can’t occur without help—which is where enzymes come in. Enzymes are biological catalysts, meaning they speed up the rate of specific chemical reactions by reducing the amount of energy needed for the reaction to occur. Most enzymes are proteins, but some RNA molecules can also act as enzymes.

Thousands of different enzymes catalyze the vast range of reactions that take place within cells, but each enzyme typically supports one of the following types of tasks:

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Quiz: Do You Know Your Immune System?

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This post is part of a miniseries on the immune system. Be sure to check out the other posts in this series that you may have missed.
Cartoon microbes with smiley faces forming the shape of a question mark.
Credit: NIGMS.

Throughout our immunology miniseries, we introduced the immune system and its many functions and components. Additionally, we highlighted how vaccines train your immune system, how the system can go awry, and how NIGMS-supported researchers are studying immunology and infectious diseases. Put your knowledge about the immune system to the test by taking the quiz below.

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Amie Fornah Sankoh Achieves a Scientific Dream

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A headshot of Dr. Amie Fornah Sankoh.
Credit: LinkedIn.

“I wanted to give up so many times. Although I tried to remain positive, I never thought I’d be able to finish my Ph.D. But I made it, and I’m extremely proud of myself,” says Amie Fornah Sankoh, Ph.D., a research scientist with Dow Chemical Company who received NIGMS support as a graduate student.

Human and Plant Communication

Dr. Sankoh has loved science and mathematics since she was just a child growing up in Sierra Leone. When she was 3 years old, Dr. Sankoh became deaf from a childhood disease. Math, unlike other subjects, is very visual, which played a part in her interest in it. “Before I learned American Sign Language when I was 15 years old, I could only understand one language: mathematics,” Dr. Sankoh says.

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Developing Low-Cost Lab Techniques: Q&A With Abraham Badu-Tawiah

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A headshot of Dr. Abraham Badu-Tawiah.
Credit: Ohio State University.

“I never thought I could make an impact on chemistry and students’ lives. But now, I’m the head of a lab with several Ph.D. and undergraduate students and a postdoctoral researcher; and we’re developing simple, low-cost lab techniques that can be adopted by labs across the world,” says Abraham Badu-Tawiah, Ph.D., the Robert K. Fox Professor of Chemistry at Ohio State University in Columbus. We talked with Dr. Badu-Tawiah about his career progression, research, and advice for students hoping to launch a career in science.

Q: How did you get started on the path to a career in science?

A: In Ghana, where I grew up, education works differently than in the United States. High school students are assigned subjects to study primarily based on their grades, and once assigned a subject, it’s difficult to switch. I was assigned to math, physics, and chemistry, which put me on a path toward being an engineer. I was happy to be studying science, but after the death of my brother, I wanted to study medicine more than engineering.

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Cool Images: Radiant in Red

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Happy Valentine’s Day! In place of red roses, we hope you’ll accept a bouquet of beautiful scientific images featuring rich, red hues. Be sure to click all the way through to see the festive protein flowing through your blood!

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

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What Does an Immunologist Do?

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This post is part of a miniseries on the immune system. Be sure to check out the other posts in this series that you may have missed.

Immunology is the study of the immune system, including all the cells, tissues, and organs that work together to protect you from germs. A person who studies immunology is called an immunologist, and there are three types:

  • Researchers, who study the immune system in the laboratory to understand how it works or how it can go awry and find new treatments for immune system-related diseases
  • Doctors, who diagnose and care for patients with diseases related to the immune system, such as food allergies or immunodeficiency
  • Physician-scientists, who are both researchers and doctors and divide their time between the clinic and the laboratory
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Broadening Opportunities for Students in STEM at Brown University and Beyond

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A headshot of Dr. Andrew G. Campbell.
Credit: Courtesy of Brown University.

Andrew G. Campbell, Ph.D., a professor of medical science at Brown University in Providence, Rhode Island, and previous dean of the graduate school, is passionate about researching understudied diseases and helping students reach their full potential.

Dr. Campbell’s lab has studied the single-cell organism Trypanosoma brucei (T. brucei), a parasite transmitted through the bite of the tsetse fly, which is only found in specific regions of Africa. In humans, T. brucei causes African Trypanosomiasis, also known as sleeping sickness. Symptoms of this illness include headache, weakness, tiredness, and altered sleep schedules; and if left untreated, it can be fatal. Dr. Campbell studies the function of certain enzymes found in T. brucei and other infectious agents, like hepatitis B virus and HIV, with the hope that they can serve as targets for new treatments for diseases.

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