Pulmotect, a clinical-stage biotechnology company based in Houston, is testing a drug that could be useful in mitigating the threats of the coronavirus, which is currently been recognized as a global health emergency. Getty Images

A drug being developed by a Houston biopharmaceutical company eventually could help combat what the World Health Organization has proclaimed a global health emergency.

Experiments conducted by clinical-stage biotechnology company Pulmotect Inc. show its PUL-042 inhaled drug has proven effective in protecting mice against two types of coronavirus: severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS). Researchers performed those tests at the University of Texas Medical Branch at Galveston.

In the Galveston experiments, a single inhaled dose of PUL-042 protected lab mice from the SARS virus, and it greatly reduced the amount of virus in their lungs after the mice became infected with SARS or MERS.

"With the risks of virulent coronaviruses and other threats increasing, as shown by the recent outbreak in Wuhan that has already spread from China to other countries including the United States, Pulmotect is optimistic that its immune-stimulating technology could be useful in mitigating the threats of current and emerging pathogens and protecting vulnerable populations," says CEO Dr. Colin Broom in a news release.

The ability of PUL-042 to ward off the newest type of coronavirus, 2019-nCoV, hasn't been tested yet. However, the drug eventually could help prevent the new virus from spreading, says Broom, who joined Pulmotect as CEO last fall. A separate study would be required to evaluate PUL-042 in patients exposed to 2019-nCoV, he says.

"PUL-042 has the potential to prevent and treat respiratory complications in many high-risk patient populations, including those where no effective therapies are currently available, as is the case with the current coronavirus outbreak," Brenton Scott, president and chief operating officer of Pulmotect, says in the release.

Since its discovery in late December 2019 in Wuhan, China, nearly 9,800 people around the world were infected with 2019-nCoV as of January 31, The New York Times reported. Of those people, more than 200 died. On January 30, the World Health Organization (WHO) declared the virus outbreak a global health emergency.

No specific treatment or cure for 2019-nCoV virus is available. This virus is among seven known coronaviruses.

Symptoms of the Wuhan coronavirus include fever, cough, and shortness of breath, according to the U.S. Centers for Disease Control and Prevention (CDC). The virus can cause pneumonia, SARS, kidney failure, or even death, the Virginia Department of Health says.

PUL-042 "would be a great tool to have available for future outbreaks and epidemics, in addition to being used more routinely for more common infections," Broom says.

Fighting coronaviruses is a potential byproduct of PUL-042.

Initially, Pulmotect is focusing development of PUL-042 on the prevention and treatment of respiratory complications suffered by cancer patients with suppressed immune systems. Phase 1 clinical trials already have taken place in the U.S., and Phase 2 clinical trials are scheduled for later this year.

A separate trial of PUL-042 is underway in London. There, the drug is being tested on patients with chronic obstructive pulmonary disease (COPD) who are prone to lung infections. COPD is an inflammatory disease that blocks airflow from the lungs. People with COPD face a heightened risk of conditions like heart disease and lung cancer, the Mayo Clinic says.

Broom says PUL-042 is a few years away from being considered for approval by the U.S. Food and Drug Administration (FDA).

To date, Pulmotect has raised more than $28 million in outside funding. Founded in 2007, Pulmotect emerged from Houston's Fannin Innovation Studio, which nurtures early stage companies in the life sciences sector.

Patents for PUL-042, invented by MD Anderson Cancer Center and Texas A&M University, have been issued in nine countries.

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2 Houston space tech cos. celebrate major tech milestones

big wins

Two Houston aerospace companies — Intuitive Machines and Venus Aerospace — have reached testing milestones for equipment they’re developing.

Intuitive Machines recently completed the first round of “human in the loop” testing for its Moon RACER (Reusable Autonomous Crewed Exploration Rover) lunar terrain vehicle. The company conducted the test at NASA’s Johnson Space Center.

RACER is one of three lunar terrain vehicles being considered by NASA for the space agency’s Artemis initiative, which will send astronauts to the moon.

NASA says human-in-the-loop testing can reveal design flaws and technical problems, and can lead to cost-efficient improvements. In addition, it can elevate the design process from 2D to 3D modeling.

Intuitive Machines says the testing “proved invaluable.” NASA astronauts served as test subjects who provided feedback about the Moon RACER’s functionality.

The Moon RACER, featuring a rechargeable electric battery and a robotic arm, will be able to accommodate two astronauts and more than 880 pounds of cargo. It’s being designed to pull a trailer loaded with more than 1,760 pounds of cargo.

Another Houston company, Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. The engine, being developed in tandem with Ohio-based Velontra — which aims to produce hypersonic planes — combines the functions of a rotating detonation rocket engine with those of a ramjet.

A rotating detonation rocket engine, which isn’t equipped with moving parts, rapidly burns fuel via a supersonic detonation wave, according to the Air Force Research Laboratory. In turn, the engine delivers high performance in a small volume, the lab says. This savings in volume can offer range, speed, and affordability benefits compared with ramjets, rockets, and gas turbines.

A ramjet is a type of “air breathing” jet engine that does not include a rotary engine, according to the SKYbrary electronic database. Instead, it uses the forward motion of the engine to compress incoming air.

A ramjet can’t function at zero airspeed, so it can’t power an aircraft during all phases of flight, according to SKYbrary. Therefore, it must be paired with another kind of propulsion, such as a rotating detonation rocket engine, to enable acceleration at a speed where the ramjet can produce thrust.

“With this successful test and ignition, Venus Aerospace has demonstrated the exceptional ability to start a [ramjet] at takeoff speed, which is revolutionary,” the company says.

Venus Aerospace plans further testing of its engine in 2025.

Venus Aerospace, recently achieved ignition of its VDR2 rocket engine. Photo courtesy of Venus Aerospace

METRO rolls out electric shuttles for downtown Houston commuters

on a roll

The innovative METRO microtransit program will be expanding to the downtown area, the Metropolitan Transit Authority of Harris County announced on Monday.

“Microtransit is a proven solution to get more people where they need to go safely and efficiently,” Houston Mayor John Whitmire said in a statement. “Connected communities are safer communities, and bringing microtransit to Houston builds on my promise for smart, fiscally-sound infrastructure growth.”

The program started in June 2023 when the city’s nonprofit Evolve Houston partnered with the for-profit Ryde company to offer free shuttle service to residents of Second and Third Ward. The shuttles are all-electric and take riders to bus stops, medical buildings, and grocery stores. Essentially, it works as a traditional ride-share service but focuses on multiple passengers in areas where bus access may involve hazards or other obstacles. Riders access the system through the Ride Circuit app.

So far, the microtransit system has made a positive impact in the wards according to METRO. This has led to the current expansion into the downtown area. The system is not designed to replace the standard bus service, but to help riders navigate to it through areas where bus service is more difficult.

“Integrating microtransit into METRO’s public transit system demonstrates a commitment to finding innovative solutions that meet our customers where they are,” said METRO Board Chair Elizabeth Gonzalez Brock. “This on-demand service provides a flexible, easier way to reach METRO buses and rail lines and will grow ridership by solving the first- and last-mile challenges that have hindered people’s ability to choose METRO.”

The City of Houston approved a renewal of the microtransit program in July, authorizing Evolve Houston to spend $1.3 million on it. Some, like council member Letitia Plummer, have questioned whether microtransit is really the future for METRO as the service cuts lines such as the University Corridor.

However, the microtransit system serves clear and longstanding needs in Houston. Getting to and from bus stops in the city with its long blocks, spread-out communities, and fickle pedestrian ways can be difficult, especially for poor or disabled riders. While the bus and rail work fine for longer distances, shorter ones can be underserved.

Even in places like downtown where stops are plentiful, movement between them can still involve walks of a mile or more, and may not serve for short trips.

“Our microtransit service is a game-changer for connecting people, and we are thrilled to launch it in downtown Houston,” said Evolve executive director Casey Brown. “The all-electric, on-demand service complements METRO’s existing fixed-route systems while offering a new solution for short trips. This launch marks an important milestone for our service, and we look forward to introducing additional zones in the new year — improving access to public transit and local destinations.”

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This article originally ran on CultureMap.