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Breakthrough drug delivery system transports genetic therapies directly to the lungs

Scientists have made a key breakthrough for treating respiratory diseases by developing a new drug delivery system that transports genetic therapies directly to the lungs, opening promising possibilities for patients with conditions like lung cancer and cystic

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Scientists have made a key breakthrough for treating respiratory diseases by developing a new drug delivery system that transports genetic therapies directly to the lungs, opening promising possibilities for patients with conditions like lung cancer and cystic fibrosis.

The research, led by Gaurav Sahay of Oregon State University's College of Pharmacy, was conducted in collaboration with Oregon Health & Science University and the University of Helsinki. Findings were published in a pair of papers, in Nature Communications and the Journal of the American Chemical Society.

Scientists created and tested more than 150 different materials and discovered a new type of nanoparticle that can safely and effectively carry messenger RNA and gene-editing tools to lung cells. In studies with mice, the treatment slowed the growth of lung cancer and helped improve lung function that had been limited by cystic fibrosis, a condition caused by one faulty gene.

Researchers also developed a chemical strategy to build a broad library of lung-targeting lipids used in the nanocarriers. These materials form the foundation for the new drug delivery system and could be customized to reach different organs in the body, Sahay said.

The streamlined synthesis method makes it easier to design future therapies for a wide range of diseases. These results demonstrate the power of targeted delivery for genetic medicines. We were able to both activate the immune system to fight cancer and restore function in a genetic lung disease, without harmful side effects." Gaurav Sahay, Oregon State University's College of Pharmacy

Oregon State's K. Yu Vlasova, D.K. Sahel, Namratha Turuvekere Vittala Murthy, Milan Gautam and Antony Jozic were co-authors of the Nature Communications paper, which also included scientists from OHSU and the University of Helsinki. OSU's Murthy, Jonas Renner, Milan Gautam, Emily Bodi and Antony Jozic teamed with Sahay on the other study.

"Our long-term goal is to create safer, more effective treatments by delivering the right genetic tools to the right place," said Sahay. "This is a major step in that direction."

These studies were funded by the Cystic Fibrosis Foundation, the National Cancer Institute and the National Heart, Lung and Blood Institute.

Vlasova, K.Y., et al. (2025). Synthesis of ionizable lipopolymers using split-Ugi reaction for pulmonary delivery of various size RNAs and gene editing. Nature Communications. doi.org/10.1038/s41467-025-59136-z.

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Related questions

01What Is Cystic Fibrosis?

Cystic fibrosis (CF) is a genetic disorder, which means you get it from your parents at birth. It affects your lungs, pancreas, and other organs. CF changes the way chloride (salt) moves through the cells of your body. This causes the mucus (which should be thin and slippery) in various organs to become thick and sticky. Over time, this thick mucus builds up inside your airways, making it hard to breathe. The mucus traps germs and leads to infections and inflammation. It can also cause severe, long-term damage to the lungs and lead to respiratory failure (inability to breathe normally) and death. In the pancreas, the thick mucus caused by CF prevents the release of digestive enzymes when you eat. This leads to malnutrition and poor growth. CF can also cause liver disease, reproductive problems, and cystic fibrosis-related diabetes (CFRD). More than 40,000 people in the U.S. live with CF. Doctors diagnose about 1,000 new cases each year. Today, more than half of the CF population is aged 18 or older, and new treatments have expanded the life expectancy by decades.

Source: www.webmd.com ↗
02When to see a doctor

If you or your child has symptoms of cystic fibrosis — or if someone in your family has CF — talk with your healthcare professional about testing for the condition. Make an appointment with a doctor who has skills and experience in treating CF. CF requires regular follow-up with your healthcare professional, at least every three months. Call your healthcare professional if you have new or worsening symptoms, such as more mucus than usual or a change in the mucus color, lack of energy, weight loss, or severe constipation. Get medical care right away if you're coughing up blood, have chest pain or trouble breathing, or have severe stomach pain and bloating. Call 911 or your local emergency number or go to the emergency department at a hospital if: You're having a hard time catching your breath or talking. Your lips or fingernails turn blue or gray. Others notice that you're not mentally alert.

Source: www.mayoclinic.org ↗
03What you can do

You might want to take a friend or family member with you to the appointment to help you remember information. Before your appointment, make a list of: Symptoms and when they started. Include anything that makes symptoms worse or better. All medicines, vitamins, herbs and supplements that you or your child take. Include the doses. Family history, such as whether anyone in your family has cystic fibrosis. Treatment you or your child have had for CF, if any. Include what the treatment was and if it helped. Any other medical conditions and their treatments. Questions to ask your healthcare professional. Questions to ask may include: What is likely causing these symptoms? What kinds of tests are needed? What treatment do you recommend? I or my child have other health conditions. How will cystic fibrosis affect them? Are there any limits needed? Feel free to ask other questions during your appointment.

Source: www.mayoclinic.org ↗
04What Are the Symptoms of Cystic Fibrosis?

The symptoms of cystic fibrosis vary. Some children will have symptoms at birth, while others may not have symptoms for weeks, months, or even years. The severity of symptoms also varies, with some children showing only mild digestive and lung problems and others having severe food-absorption problems and life-threatening breathing complications. The most common symptoms of cystic fibrosis are: Salty-tasting skin , which parents notice when they kiss their child Frequent coughing , wheezing , or bouts of pneumonia or sinusitis Difficulty breathing that keeps getting worse Big appetite but poor weight gain Bulky, smelly, greasy bowel movements Over time, the symptoms of cystic fibrosis can worsen and may include: Chronic productive cough, recurrent lung infections Obstructive lung disease ( emphysema ) Chronic nasal congestion and sinus infections Pancreatitis , a painful inflammation of the pancreas Liver disease Diabetes Gallstones

Source: www.webmd.com ↗
05How Does Alyftrek Work?

Alyftrek is a type of medicine called a CFTR modulator. Alyftrek is designed to help make the broken CFTR protein in people with cystic fibrosis work better. Since different genetic mutations can cause different types of problems with the protein, the medicines available today only work for people with certain mutations. Alyftrek is approved for people who have at least one F508del mutation or another responsive mutation in the CFTR gene. Alyftrek contains three active ingredients (vanzacaftor, tezacaftor, and deutivacaftor) that work together to help the CFTR protein work better. Vanzacaftor and tezacaftor help the CFTR protein fold correctly and move to the cell surface, while deutivacaftor increases CFTR activity to lower the buildup of mucus. By helping CFTR work better, Alyftrek helps thin mucus in the lungs and other organs, making it easier to clear and reducing complications of cystic fibrosis.

Source: www.webmd.com ↗
Research context

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Research and Statistics: Who Has Cystic Fibrosis?

About 40,000 people are living with cystic fibrosis in the United States, and there are approximately 105,000 people with CF worldwide. (3) More than 75 percent of people with the disease are diagnosed by age 2, and more than half of all people living with cystic fibrosis are 18 or older. CF occurs predominantly in white populations, at a rate of 1 in 2,500 births. Between 2 and 5 percent of white people are carriers of the CFTR gene variant but have no overt clinical signs of disease. The disease is less common among African Americans, occurring at the much lower frequency of approximately 1 out of 17,000 births. (15) CF gene variants are most prevalent in persons of northern and central European ancestries or of Ashkenazi Jewish descent. They are rarely found in Native Americans, Asians, or native Africans. (16) CF is equally common among men and women, but women patients fare significantly worse than male patients with the disease. The median survival age for female CF patients is about three years younger than it is for men, but the reasons for the poorer survival rates among women are not completely understood. (17)

Source: everydayhealth.com ↗
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