Houston-based Ridgeline Therapeutics isn't going to allow you beat aging, but someday it may well help you to live without muscle loss or diabetes. Getty Images

Stan Watowich's conversation flits with ease from restaurants to solving the homeless crisis. His active mind has made him a serial inventor. But the founder and current CEO of Ridgeline Therapeutics, a spin-off company of the University of Texas Medical Branch in Galveston where he is an associate professor of biochemistry and molecular biology, also has a razor-sharp focus when it comes to discussing his research. He wants to make it clear that he is not going to cure aging.

"You and I are still going to get old," he says. "But we have our hopes that as we get old our muscles will stay healthy."

He's talking about the drug candidate, RLT-72484. It has been shown to reactivate muscle stem cells and regenerate skeletal muscle in aged laboratory mice. We've all seen it in elderly humans: Your grandparents are shrunken from their younger selves because their muscles no longer regenerate at the rate that they once did.

"When you go to the gym, you feel that burn which indicates that you have muscle damage. Your stem cells are responsible for repairing this damage and building your muscles," Watowich explains. Stem cells simply don't repair at the same rate in older individuals.

That's why, for example, elderly people who break a hip often fare poorly in the aftermath. It's not uncommon to face a difficult period of physical therapy following hip fracture surgery. Many patients do not return to independent living. And, the mortality rate one year after a hip fracture can be as high as 30 percent. If RLT-72484 proves to work as well in humans as it does in animal models, it could make it easier for patients to gain muscle after a fall.

But even for healthy older adults, muscle decline can cause problems. Travel is difficult if you don't have the muscle strength for long walks. Playing with grandchildren is a challenge if your mobility is compromised. Watowich's vision is to prevent muscle decline or at least slow it down.

The drug could also potentially help muscular dystrophy patients. The genetic diseases identified under that umbrella diagnosis all cause muscle loss before old age, sometimes even in infancy. If RLT-72484 fulfills its promise, it could allow MD patients to live more normal lives.

In the University of Texas Medical Branch study, the mice's muscle fiber doubled in size while muscle strength increased by 70 percent. The team published a study last month describing its results. The next year will be spent on studies necessary to win FDA approval to begin testing on humans.

Muscle loss isn't the only big problem Ridgeline Therapeutics is seeking to address. Obesity-linked diabetes is also in Watowich's sights. His team has come up with a small molecule that shrinks fat tissue in obese animals. In studies published last year, mice lost seven percent of their body weight in 10 days of treatment without changing their diets. The animals remained obese, but their fat deposits had decreased in size by 30 percent. The drug on its own cannot make obese people thin, but it may help diabetics to return to a non-diabetic state.

Ridgeline Therapeutics is based in the Texas Medical Center. Watowich explains that 98 percent of biotech companies fail, so it's his goal to "stay lean" and use the $4.2 million award the company received from the Department of Defense to get their technologies into human trials. The company will likely move to the Johnson & Johnson Innovation Labs collaboration space in the next few months.

But of course, what Ridgeline Technologies has to offer is most exciting of all. Remember, it's not going to allow you beat aging. But someday it may well help you to live without muscle loss or diabetes.

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Rice University lands $18M to revolutionize lymphatic disease detection

fresh funding

An arm of the U.S. Department of Health and Human Services has awarded $18 million to scientists at Rice University for research that has the potential to revolutionize how lymphatic diseases are detected and help increase survivability.

The lymphatic system is the network of vessels all over the body that help eliminate waste, absorb fat and maintain fluid balance. Diseases in this system are often difficult to detect early due to the small size of the vessels and the invasiveness of biopsy testing. Though survival rates of lymph disease have skyrocketed in the United States over the last five years, it still claims around 200,000 people in the country annually.

Early detection of complex lymphatic anomalies (CLAs) and lymphedema is essential in increasing successful treatment rates. That’s where Rice University’s SynthX Center, directed by Han Xiao and Lei Li, an assistant professor of electrical and computer engineering, comes in.

Aided by researchers from Texas Children’s Hospital, Baylor College of Medicine, the University of Texas at Dallas and the University of Texas Southwestern Medical Center, the center is pioneering two technologies: the Visual Imaging System for Tracing and Analyzing Lymphatics with Photoacoustics (VISTA-LYMPH) and Digital Plasmonic Nanobubble Detection for Protein (DIAMOND-P).

Simply put, VISTA-LYMPH uses photoacoustic tomography (PAT), a combination of light and sound, to more accurately map the tiny vessels of the lymphatic system. The process is more effective than diagnostic tools that use only light or sound, independent of one another. The research award is through the Advanced Research Projects Agency for Health (ARPA-H) Lymphatic Imaging, Genomics and pHenotyping Technologies (LIGHT) program, part of the U.S. HHS, which saw the potential of VISTA-LYMPH in animal tests that produced finely detailed diagnostic maps.

“Thanks to ARPA-H’s award, we will build the most advanced PAT system to image the body’s lymphatic network with unprecedented resolution and speed, enabling earlier and more accurate diagnosis,” Li said in a news release.

Meanwhile, DIAMOND-P could replace the older, less exact immunoassay. It uses laser-heated vapors of plasmonic nanoparticles to detect viruses without having to separate or amplify, and at room temperature, greatly simplifying the process. This is an important part of greater diagnosis because even with VISTA-LYMPH’s greater imaging accuracy, many lymphatic diseases still do not appear. Detecting biological markers is still necessary.

According to Rice, the efforts will help address lymphatic disorders, including Gorham-Stout disease, kaposiform lymphangiomatosis and generalized lymphatic anomaly. They also could help manage conditions associated with lymphatic dysfunction, including cancer metastasis, cardiovascular disease and neurodegeneration.

“By validating VISTA-LYMPH and DIAMOND-P in both preclinical and clinical settings, the team aims to establish a comprehensive diagnostic pipeline for lymphatic diseases and potentially beyond,” Xiao added in the release.

The ARPA-H award funds the project for up to five years.

Houston doctor wins NIH grant to test virtual reality for ICU delirium

Virtual healing

Think of it like a reverse version of The Matrix. A person wakes up in a hospital bed and gets plugged into a virtual reality game world in order to heal.

While it may sound far-fetched, Dr. Hina Faisal, a Houston Methodist critical care specialist in the Department of Surgery, was recently awarded a $242,000 grant from the National Institute of Health to test the effects of VR games on patients coming out of major surgery in the intensive care unit (ICU).

The five-year study will focus on older patients using mental stimulation techniques to reduce incidences of delirium. The award comes courtesy of the National Institute on Aging K76 Paul B. Beeson Emerging Leaders Career Development Award in Aging.

“As the population of older adults continues to grow, the need for effective, scalable interventions to prevent postoperative complications like delirium is more important than ever,” Faisal said in a news release.

ICU delirium is a serious condition that can lead to major complications and even death. Roughly 87 percent of patients who undergo major surgery involving intubation will experience some form of delirium coming out of anesthesia. Causes can range from infection to drug reactions. While many cases are mild, prolonged ICU delirium may prevent a patient from following medical advice or even cause them to hurt themselves.

Using VR games to treat delirium is a rapidly emerging and exciting branch of medicine. Studies show that VR games can help promote mental activity, memory and cognitive function. However, the full benefits are currently unknown as studies have been hampered by small patient populations.

Faisal believes that half of all ICU delirium cases are preventable through VR treatment. Currently, a general lack of knowledge and resources has been holding back the advancement of the treatment.

Hopefully, the work of Faisal in one of the busiest medical cities in the world can alleviate that problem as she spends the next half-decade plugging patients into games to aid in their healing.