Houston researchers develop dissolvable implant for targeted cancer drug delivery

cancer research

The implant is only the size of a grain of rice. Photo via Getty Images

Researchers at Houston Methodist have developed a biodegradable implant that can be used to safely and consistently deliver drug treatments to tumors and then dissolve without the need for further surgery.

The implant is only the size of a grain of rice, but its potential is staggering. The biodegradable nanofibrous drug-eluting seed (b-NDES) works as a reservoir parked inside a soft tumor, where it can slowly release immune-stimulating drugs over time. This overcomes a consistent problem with drugs such as immune checkpoint inhibitors. Normal systemic administration sees comparatively little of the drug making its way to the tumor, with most of it circulating throughout the body. The b-NDES is like deploying a small guerrilla fighting force embedded in enemy territory, doing maximum damage to the entrenched tumor.

"To improve cancer treatment, we're trying to start a fire inside the tumor itself," Corrine Chua, associate professor in the Center for BioNanoengineering at Houston Methodist Research Institute, said in a news release. "By activating immune cells directly within the tumor microenvironment, those cells can then travel throughout the body and seek out cancer wherever it exists. The b-NDES platform was developed to help keep therapeutic drugs concentrated inside tumors while minimizing exposure to healthy tissues.”

Chua co-led the study with Alessandro Grattoni, chair and director of the Center for BioNanoengineering at Houston Methodist Research Institute.

The study included support from the Nancy Owens Breast Cancer Foundation and the National Institutes of Health/National Cancer Institute.

Chau and Grattoni used preclinical models of triple-negative breast cancer, an aggressive form of cancer that is estrogen receptor-negative, progesterone receptor-negative and HER2-negative. Because of the receptor negativity, some popular treatments like tamoxifen and trastuzumab are ineffective. Chemotherapy has been shown to be the best course of action.

The b-NDES implant is deployed alongside radiation drugs. It keeps the drugs focused on the tumor, reducing the amount of harmful side effects typically seen when drugs are circulated more widely in the body. In 60 percent of the models, tumors were eliminated and did not cause side effects beyond the tumor site. Once the drugs have been deployed, the implant breaks down naturally.

While promising, more research will have to be done to expand use to other tumor types.

"Although the study focused on triple-negative breast cancer models, the approach could have broader applications for solid tumors," Grattoni added in the release. "It could potentially be used in cancers where there is a tumor lesion accessible for placement, including pancreatic or lung cancers."

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Houston-area researchers are innovating health and wellness solutions every day — even focusing on non-pandemic-related issues. Getty Images

These 3 Houston research projects are revolutionizing health science

Research roundup

Researchers across the world are coming up with innovative breakthroughs regarding the coronavirus, but Houston research institutions are also making health and wellness discoveries outside of COVID-19.

Here are three from Houston researchers from a muscular atrophy study from outer space to a research project that might allow blind patients to "see."

Houston Methodist's research on muscular atrophy in astronauts

Scientists are studying the effect of certain drugs to help preserve muscles in astronauts. Photo courtesy of Houston Methodist/Facebook

Houston Methodist researcher Alessandro Grattoni and his team published research on muscular atrophy in astronauts. The research was published in Advanced Therapeutics and focused on his 2017 RR-6 muscle atrophy study that was conducted on the International Space Station.

While the current standard practice for astronauts maintaining their muscles is working out over two hours a day, the research found that use of drugs could also help preserve muscles. On a SpaceX refuel mission, mice that were implanted with a "Nanofluidic Delivery System" were sent up to space and monitored, according to a report. The device gradually released small doses of formoterol, an FDA approved drug for use in bronchodilation that has also been shown to stimulate increased muscle mass.

University of Houston researcher tracking fear response to improve mental health treatment

The research could help advance wearable devices. Photo via uh.edu

University of Houston researchers are looking into the way the body responds to fear in order to enhance mental health treatment. Rose Faghih, assistant professor of electrical and computer engineering, and doctoral student Dilranjan Wickramasuriya in the Computational Medicine Lab (CML) are leading the project.

"We developed a mixed filter algorithm to continuously track a person's level of sympathetic nervous system activation using skin conductance and heart rate measurements," writes Faghih in the journal PLOS One. "This level of sympathetic activation is closely tied to what is known as emotional arousal or sympathetic arousal."

When this sympathetic nervous system is activated — sometimes known as the "fight or flight" response — the heart beats faster and more oxygen is delivered to the muscles, according to a press release. Then, the body begins to sweat in order to cool down.

"Using measurements of the variations in the conductivity of the skin and the rate at which the heart beats, and by developing mathematical models that govern these relationships, CML researchers have illustrated that the sympathetic nervous system's activation level can be tracked continuously," reports Faghih.

This algorithm could be used in a wearable electronic device that could be worn by a patient diagnosed with a fear or anxiety disorder.

Baylor College of Medicine's vision-restoring research

What if a device could see for you? Photo from Pexels

When someone loses their vision, it's likely due to damage to the eyes or optic nerve. However, the brain that interprets what they eyes sees, works perfectly fine. But researchers from Baylor College of Medicine have worked on a thesis that a device with a camera could be designed and implemented to do the seeing for the blind patient.

"When we used electrical stimulation to dynamically trace letters directly on patients' brains, they were able to 'see' the intended letter shapes and could correctly identify different letters," says Dr. Daniel Yoshor, professor and chair of neurosurgery in a press release. "They described seeing glowing spots or lines forming the letters, like skywriting."

Through a study supported by the National Eye Institute with both sighted and blind people using implanted devices, the investigators determined that the process was promising. According to the release, the researchers identified several obstacles must be overcome before this technology could be implemented in clinical practice.

"The primary visual cortex, where the electrodes were implanted, contains half a billion neurons. In this study we stimulated only a small fraction of these neurons with a handful of electrodes," says said Dr. Michael Beauchamp, professor and in neurosurgery, in the release.

"An important next step will be to work with neuroengineers to develop electrode arrays with thousands of electrodes, allowing us to stimulate more precisely. Together with new hardware, improved stimulation algorithms will help realize the dream of delivering useful visual information to blind people."

Houston researchers are commercializing their organ 3D printing technology, a local hospital has a tiny medical device with a big impact, and more in health tech. Jordan Miller/Rice University

3 health technologies developed in Houston that are changing the industry

Game changers

There's a huge opportunity for breakthrough medical technology in Houston thanks in large part to major universities, the Texas Medical Center, and other resources within health care startups.

From a new tiny implant that can deliver medicine into the patient remotely to printable human tissue, here are three health technologies coming out of Houston innovators to look out for.

Houston Methodist's tiny drug delivery implant

This tiny implant can have a big effect on patients. Courtesy of Houston Methodist

Houston Methodist nanomedicine researchers have developed an implant the size of a grape that can deliver medicine via a remote control. The device has applications in arthritis, diabetes, and heart disease treatment.

The battery-powered nanochannel deliver system uses Bluetooth technology and can dole out continuous, predetermined dosages for up to a year without refills. A proof-of-concept for the device published in Lab on a Chip.

"We see this universal drug implant as part of the future of health care innovation," says Alessandro Grattoni, chair of the nanomedicine department at Houston Methodist. "Some chronic disease drugs have the greatest benefit of delivery during overnight hours when it's inconvenient for patients to take oral medication. This device could vastly improve their disease management and prevent them from missing doses, simply with a medical professional overseeing their treatment remotely."

The devices can be programed for different dosage sizes and different release settings, which affect the voltage for the medicine delivery.

Houston Methodist has a number of new technologies it's introduced into its hospital system — click here to read about a few more.

NurseDash's resourceful scheduling tool

Houston-based NurseDash is the Uber of staffing nursing shifts in medical facilities. Photo via nursedash.com

Filling open nursing shifts has always been a challenge for hospitals and medical centers, and they've been forced to rely on outsourced companies to coordinate nurses to fill the shifts. NurseDash puts the power back in the hands of freelance nurses and the medical institutions that want to hire them.

Andy Chen, former CFO for Nobilis Health Corporation and co-founder of NurseDash, says the standard practice is hiring these agencies to fill shifts, and, while they promise to send someone, they don't even know who they'll be sending for a shift just hours away. This antiquated system prioritizes who comes in first, rather than a nurse's specialties or qualifications.

Since its debut, NurseDash, which is based in Houston's Galleria Area, has attracted 40 facilities in Houston, including hospitals, surgery centers, and senior living, and about 400 nurses. Chen says he isn't sure just what to call his technology yet, but compares it to the ride hailing of Uber or Lyft and calls it "a virtual bulletin board."

The company has already expanded beyond Houston to northeast Ohio, which the founders say has a similar competitive dynamic to the Houston market. The next goal is to hit the rest of the top 10 largest cities in the United States. To read more about the app and startup, click here.

Volumetric's human tissue-printing technology

Rice University bioengineer Daniel Sazer prepares a scale-model of a lung-mimicking air sac for testing. Jeff Fitlow/Rice University

In a world where organ transplants means an incredible amount of time, money, and patience, there might soon be another option on the operating table. Volumetric is a startup that came out of a human tissue-printing technology developed at Rice University.

Jordan Millar developed the 3D printer in his lab at Rice, and still has ongoing research within the technologies. However, Miller says he very strategically chose to launch a for-profit company in 2018 — mainly, to provide access.

"If we want to do translational research, commercialization is important," reasons Miller. "We need to build the market to get that technology into the world."

Right now, the device is printing scaled down organs, and a contraption that looks a bit like a futuristic beehive, graced the cover of the May 3 issue of the journal Science. It's a working air sac complete with blood vessels, the beginnings of a technology that is perhaps only a decade from being implanted in humans. To read more about Volumetric, click here.


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UH lands $3M grant to expand opioid overdose training

Overdose Response

The University of Houston has received a $3 million federal grant to expand its potentially life-saving overdose response training program.

The grant will support the Houston Health Department’s FRONTLINES program that trains first responders in Harris and Fort Bend counties to recognize opioid overdoses and administer the drug naloxone, which can counter the effects of an opioid overdose. The four-year grant comes from the Substance Abuse and Mental Health Services Administration within the Department of Health and Human Services, and it builds on eight years of work at UH, according to a release from the university.

As part of the expansion, UH medical, social work and psychology students will now also be able to take part in FRONTLINES’ overdose-response training. Some of the students will also be selected to help train community members, ultimately passing along the life-saving skills throughout Houston.

FRONTLINES is a collaboration with the City of Houston, the Fertitta College of Medicine, Baylor College of Medicine and the Houston Recovery Center. It was co-founded by Dr. James Bray, chair of the Department of Behavioral and Social Sciences at the University of Houston’s Tilman J. Fertitta Family College of Medicine, in 2018.

“When someone experiencing an opioid overdose is reached in time, naloxone can save their life,” Bray said in a news release. “We’ve seen the impact this training can have in Houston, and now we have an opportunity to extend that reach across Harris and Fort Bend counties, putting lifesaving knowledge and tools into the hands of more first responders.”

In 2024, around 450 residents of Harris County died from opioid overdoses, according to a Texas Department of State Health Services report. The report found that fentanyl was involved in about three-quarters of the deaths.

In 2025, UH also received a $2.6 million gift from the estate of Dr. William A. Gibson to expand its opioid research and develop a vaccine to help block fentanyl's effectiveness in entering the brain. The vaccine research is part of the Michael C. Gibson Addiction Research Program led by UH professor of psychology Therese Kosten and founding member of the UH Drug Discovery Institute Colin Haile. Read more about the grant and the vaccine’s development here.

Texas public libraries drive billions in economic impact, report finds

Beyond the Stacks

A new statewide study examining the economic impacts of public libraries has revealed they have generated over $3.8 billion in value to local communities — a return of $4.74 for every $1 invested.

The report, "Beyond the Stacks: Measuring the Economic and Community Value of Texas Public Libraries" was conducted by third-party consultancy JBK Economics Group in partnership with the Texas Library Association. About 300 of the total 513 public libraries in Texas participated in a survey for the report.

A major finding from the survey revealed that public libraries create billions in economic value for the communities they serve at a fraction of what it costs to pay employee wages and benefits, operating expenditures, and capital expenditures. About 11,200 jobs were directly and indirectly supported by public libraries, the report found.

The report found its $4.74 to $1 ratio by adding up the total value of the services provided by these institutions (an estimated $2.48 billion), and comparing it to total expenditures ($808.6 million).

"Public libraries had about the same economic footprint as the Texas motion picture and sound recording industry ($2.9 billion in Gross Domestic Product in 2024) or the Texas paper manufacturing industry ($4.0 billion in Gross Domestic Product in 2024)," the report said.

Many Houstonians are already familiar with Houston Public Library's expansive catalog and programming, but there are many more services the library provides that might fly under the radar. A few examples include access to subscription-based research databases and news outlets, and the Library of Things, a collection of cookware and bake ware, musical instruments, craft kits, and other tools or activity materials that are available for cardholders to borrow. Individual branches also provide free Wi-Fi, computer access, and meeting spaces.

Houston-area residents also have access to services at several other local libraries depending on their address, such as the Harris County Public Library, Montgomery County Memorial Library System, or Fort Bend County Libraries, just to name a few.

These are additional services and partnerships that Texas public libraries commonly provide, per the survey results:

  • 93 percent provide voter registration and/or serve as voting locations
  • 84 percent provide partnerships with local social services agencies
  • 82 percent provide job application assistance
  • 68 percent facilitate applications for government benefits
  • 38 percent provide on-site social services
  • 30 percent provide telehealth rooms and/or resources
"Public libraries are practical, welcoming and rooted in the communities they serve — they are unmistakably Texan," said Texas Library Association executive director Shirley Robinson in a press release. "This study puts a dollar value on the opportunities libraries create every day. Whether someone visits a library to apply for a job, access the internet, learn a new skill or simply find a new favorite book, those services create real value for Texans and their communities."

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This article first appeared on CultureMap.com.

Rice University launches new venture fund for university-affiliated startups

startup support

Rice University has launched its new One Giant Leap Ventures Fund I, which will invest in the university’s spinouts and alumni-founded startups.

The early-stage institutional venture fund will function with a hybrid structure that allows for participation from traditional equity investors and philanthropic investors. According to the university, the fund will invest up to $500,000 per Rice-affiliated company.

To be considered eligible for funds, companies must use intellectual property licensed by the university or be led or founded by alumni.

One Giant Leap will draw on support and mentorship from Rice’s pool of 60,000 alumni and aims to create educational opportunities within the investment phases, work with graduate and undergraduate venture students, explore the scaling and commercialization of their ideas, and help investigate all the facets of venture capital.

“Rice alumni bring an extraordinary depth of experience as entrepreneurs, investors and industry leaders, and One Giant Leap creates new ways to put that expertise to work for the next generation of Rice innovators,” Stephen Bayer, vice president for development and alumni relations, said in a news release. “It strengthens the connection between our alumni and the university while giving them meaningful opportunities to mentor, advise and support Rice-affiliated companies as they grow.”

The fund held its first close in August and made its first investment into Rice brain health spinout Motif Neurotech. Led by Rice faculty member Jacob Robinson, Motif is working to commercialize a minimally invasive neurostimulator that targets treatment-resistant depression. In May, the FDA approved the company to move forward with its first clinical trial.

“Research produces breakthrough technologies and our academic environment forms outstanding entrepreneurs,” said Adrian Trömel, the fund’s managing director, a Rice alumnus and a startup founder who also serves as Rice’s interim chief innovation officer.

One Giant Leap joins the already long list of Rice-led programs that foster innovation, including the Liu Idea Labs for Innovation and Entrepreneurship’s Innovation Fellows and Summer Venture Studio, the Rice Alliance’s Business Plan Competition, the Ion District, Woodside Rice Decarbonization Accelerator, Rice Nexus, the Biotech Launchpad and RBL Ventures and its upcoming 200,000 square-foot research lab the Arc.

“With One Giant Leap, I am excited that we are creating a unique structure that brings together traditional investment and philanthropic participation to invest in and help catalyze our startups, engage the deep expertise within the Rice ecosystem and transform those strengths into real-world impact,” Trömel added in the release.

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