Rice University bioengineers create insulin-producing medical device

health tech

Rice University bioengineers are designing a vascularized, insulin-producing implant for Type 1 diabetes. Photo by Jeff Fitlow courtesy of Rice University

A team of bioengineers at Houston's own Rice University have created an implant that can produce insulin for Type 1 diabetics. The device is being created by using 3D printing and smart biomaterials.

Omid Veiseh, an assistant professor of bioengineering, and Jordan Miller, associate professor of bioengineering, have been working on the project for three years and have received support from JDRF by way of a grant. Veiseh has a decade of experience developing biomaterials that protect implanted cell therapies from the immune system an Miller has spent more than 15 years specializing in 3D print tissues with vasculature, or networks of blood vessels.

"If we really want to recapitulate what the pancreas normally does, we need vasculature," Veiseh says in a news release. "And that's the purpose of this grant with JDRF. The pancreas naturally has all these blood vessels, and cells are organized in particular ways in the pancreas. Jordan and I want to print in the same orientation that exists in nature."

The challenge with Type 1 diabetes is balancing insulin intake, and studies estimate that less than a third of Type 1 diabetics in the U.S. are able to achieve target blood glucose levels consistently. Veiseh and Miller are working toward demonstrating that their implants can properly regulate blood glucose levels of diabetic mice for at least six months. To do that, they'll need to give their engineered beta cells the ability to respond to rapid changes in blood sugar levels.

"We must get implanted cells in close proximity to the bloodstream so beta cells can sense and respond quickly to changes in blood glucose," Miller says, adding that the insulin-producing cells should be no more than 100 microns from a blood vessel. "We're using a combination of pre-vascularization through advanced 3D bioprinting and host-mediated vascular remodeling to give each implant several shots at host integration."

Another challenge these experts are facing is a potential delay that can happen if the implant is too slow to respond to high or low blood sugar levels.

"Addressing that delay is a huge problem in this field," Veiseh says. "When you give the mouse — and ultimately a human — a glucose challenge that mimics eating a meal, how long does it take that information to reach our cells, and how quickly does the insulin come out?"

By incorporating blood vessels in their implant, he and Miller hope to allow their beta-cell tissues to behave in a way that more closely mimics the natural behavior of the pancreas.

Last month was National Diabetes Awareness Month and Houston-based JDRF Southern
Texas Chapter has some examples of how technology is helping people with type 1 diabetes. Photo courtesy of JDRF

Houston expert: New technologies are improving lives of those living with type 1 diabetes

Guest column

Type 1 diabetes (T1D) is an autoimmune disease where insulin-producing beta cells in the pancreas are mistakenly destroyed by the body's immune system. Insulin is vital in controlling blood-sugar or glucose levels. Not only do you need proper blood-sugar levels for day-to-day energy, but when blood-sugar levels get too high (hyperglycemia) or too low (hypoglycemia), it can cause serious problems and even death. Because of this, those with T1D are dependent on injections or pumps to survive.

The causes of T1D are not fully known, and there is currently no cure; however, advancing technologies are making it easier to live with T1D.

Monitoring

Those who have had T1D for decades might recall having to pee into a vial and test reagent strips in order to check their blood-sugar levels. Thankfully, this evolved into glucometers, or glucose meters. With a glucometer, those with T1D prick their finger and place a drop on the edge of the test strip, which is connected to the monitor that displays their results. Nowadays, glucometers, much like most T1D tech, can be Bluetooth enabled and sync with a smartphone.

From there, scientists have developed the continuous glucose monitor (CGM) so that those with T1D can monitor their blood sugar 24/7. All you need to do is insert a small sensor under the skin. The sensor then measures glucose levels every few minutes, and that information can then be transmitted to smartphones, computers and even smart watches.

Monitoring blood-sugar levels is vital for those with T1D, particularly because it helps them stay more aware of their body, know what to do and even what to expect, but they also have to actively control those levels by injecting insulin. Think of a monitor as the "check engine" light. It can tell you that there may be a problem, but it won't fix it for you. To fix it, you would need an injection or a pump.

Pumps and artificial pancreas

The development of insulin pumps has made a huge impact on the lives of those with T1D and parents of children with T1D by making it easier to manage their blood-sugar levels. 50 years ago, the prototype of the insulin pump was so large, it had to be a backpack, but with today's technology, it is about the size of a smartphone. The pump is worn on the outside of the body, and it delivers insulin through a tube which is placed under the skin. Insulin pumps mimic the way a pancreas works by sending out small doses of insulin that are short acting. A pump can also be manipulated depending on each person's needs. For example, you can press a button to deliver a dose with meals and snacks, you can remove it or reduce it when active and it can be programmed to deliver more at certain times or suspend delivery if necessary.

One of the most recent and trending developments in T1D research is the artificial pancreas, or more formally referred to as the automated insulin delivery (AID) systems. Essentially, the artificial pancreas is an insulin pump that works with a CGM. The CGM notifies the insulin pump of your blood-sugar reading, which acts accordingly to restore your blood sugar to the target level. The artificial pancreas allows those with T1D to be even more hands off, as it does essentially everything: It continuously monitors blood-sugar levels, calculates how much insulin you would need, which can be done through smart devices, and automatically delivers insulin through the pump.

Living with T1D is a 24/7/365 battle; however, the advances in technology make it easier and safer to live with the disease. Organizations like JDRF play a huge role in investing in research, advocating for government support and more.

November was National Diabetes Awareness Month, and this year is particularly special for JDRF, as it is the 50th year of the organization. JDRF was founded in 1970 by two moms. The community grew to include scientists, lobbyists, celebrities and children—all determined to improve lives and find cures.

Bound by a will stronger than the disease, this year during National Diabetes Awareness Month (NDAM), JDRF celebrates "The Power of Us." We are reflecting on the power of our community and reminding ourselves and the public of how far we've come in the fight against T1D.


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Rick Byrd is the executive director of the JDRF Southern Texas Chapter.

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Houston residents rank economy as biggest problem, new Kinder survey shows

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The region’s economy tops the list of concerns of Houston-area residents surveyed by Rice University’s Kinder Institute for Urban Research.

Respondents in the Kinder Houston Area Survey, which questioned nearly 9,000 residents of Harris, Fort Bend and Montgomery counties, cite the regional economy as the area’s “biggest problem.”

Shrinking confidence in job opportunities and growing household financial pressures fueled the grim economic outlook:

  • The share of residents rating job prospects as “good” or “excellent” fell by more than 25 percentage points, the sharpest single-year decline since the 1980s.
  • Seventy-nine percent of those earning less than $25,000 said they’d be unable to cover an unplanned $400 expense. That was up from 72 percent last year. In the $50,000-to-$99,999 category, the figure was 39 percent, up from 30 percent last year.
  • More than 20 percent of residents said their financial status was worse than it was 12 months earlier.

“These challenges were particularly notable among lower- and middle-earning households,” according to a report about the survey.

Dan Potter, co-director of the institute’s Houston Population Research Center, says the annual survey “provides community leaders and the public with a map of where we’ve been on key issues, where we are now, and what’s of looming importance. It allows everyone to work together toward a better future for our city and our region.”

Houston-based Oxy officially announces CEO transition, names successor

Team Transition

Houston-based Occidental (Oxy) has officially announced its longtime CEO's retirement and her successor.

Oxy shared that Vicki Hollub will retire June 1. Reuters first reported Hollub's plan to retire in March, but a firm date had not been set. Hollub will remain on Oxy's board of directors.

Richard Jackson, who currently serves as Oxy's COO, will replace Hollub in the CEO role.

“It has been a privilege to lead Occidental and work alongside such a talented team for more than 40 years," Hollub shared in a news release. "Following the recently completed decade-long transformation of the company, we now have the best portfolio and the best technical expertise in Occidental’s history. With this strong foundation in place, a clear path forward and a leader like Richard, who has the experience and vision to elevate Occidental, now is the right time for this transition. “I look forward to supporting Richard and the Board through my continued role as a director.”

Hollub has held the top leadership position at Oxy since 2016 and has been with the energy giant for more than 40 years. Before being named CEO, she served as COO and senior executive vice president at the company. She led strategic acquisitions of Anadarko Petroleum in 2019 and CrownRock in 2024, and was the first woman selected to lead a major U.S. oil and gas company.

Hollub also played a key role in leading Oxy's future as a "carbon management company."

Jackson has been with Oxy since 2003. He has held numerous leadership positions, including president of U.S. onshore oil and gas, president of low carbon integrated technologies, general manager of the Permian Delaware Basin and enhanced oil recovery oil and gas, vice president of investor relations, and vice president of drilling Americas.

He was instrumental in launching Oxy Low Carbon Ventures, which focuses DAC, carbon sequestration and low-carbon fuels through businesses like 1PointFive, TerraLithium and others, according to the company. He also serves on the Oil and Gas Climate Initiative’s Climate Investment Board and the American Petroleum Institute’s Upstream Committee. He holds a bachelor's degree in petroleum engineering from Texas A&M University.

Jackson was named COO of Oxy in October 2025. In his new role as CEO, he will also join the board of directors, effective June 1.

“I am grateful to be appointed President and CEO of Occidental and excited about the opportunity to execute from the strong position and capabilities that we built under Vicki’s leadership,” Jackson added in the release. “It means a lot to me personally to be a part of our Occidental team. I am committed to delivering value from our significant and high-quality resource base. We have a tremendous opportunity to focus on organic improvement and execution to deliver meaningful value for our employees, shareholders and partners.”

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This article first appeared on EnergyCapitalHTX.com.

Rice Brain Institute awards seed grants for dementia, Alzheimer’s research

brain trust

The recently established Rice Brain Institute awarded 12 seed grants last month to support research on dementia, Alzheimer’s disease, Parkinson’s disease and other neurological disorders.

The grants are part of the Rice DPRIT Seed Grant Program, which aims to help faculty members generate preliminary data, test and teams that would be supported under the Dementia Prevention and Research Institute of Texas.

The DPRIT was approved last year to provide $3 billion in state funding over a 10-year span for research on dementia prevention and other neurological conditions. It will be modeled after the Cancer Prevention and Research Institute of Texas (CPRIT), which has awarded nearly $4 billion in grants since 2008.

“DPRIT is a historic initiative with transformative impact potential and at Rice we are very well equipped to contribute to its mission and help make Texas a leader in brain health and innovation,” Behnaam Aazhang, a Rice professor of electrical and computer engineering and director of the Neuroengineering Initiative and the RBI, said in a news release.

The Rice DPRIT Seed Grant Program is supported by the RBI and the Educational and Research Initiative for Collaborative Health (ENRICH) office at Rice. Most of the funding came from Rice's Office of Research, with a contribution from Rice's Amyloid Mechanism and Disease Center, which also launched last year.

A number of the teams include collaborators from Houston's Texas Medical Center, including Baylor College of Medicine, University of Texas Medical Branch and the McGovern Medical School at UTHealth Houston.

The 12 teams are:

  • Keya Ghonasgi, assistant professor of mechanical engineering at Rice. Ghonasgi's research addresses the high risk of falls among people with different types of dementia and aims to develop a personalized, home-based fall-prevention approach using textile-integrated wearable sensors.
  • Luz Garcini, associate professor of psychological sciences at Rice, and Hannah Ballard, associate director of community and public health at the Kinder Institute for Urban Research at Rice. Garcini and Ballard's research looks at barriers and facilitators to early detection of Alzheimer’s disease in diverse, medically underserved urban communities and focuses on populations that experience late diagnosis, including Hispanic/Latino groups.
  • Lei Li, assistant professor of electrical and computer engineering at Rice, and Pablo Valdes, assistant professor of neurosurgery at UTMB. Li and Valdes' project develops a noninvasive, bedside imaging approach to monitor brain blood flow and oxygenation in patients recovering from stroke or brain surgery using photoacoustic imaging through a specialized transparent skull implant.
  • Cameron Glasscock, assistant professor of biosciences at Rice. Glasscock's project addresses repeat expansion disorders, such as Huntington’s disease and myotonic dystrophy, and focuses on stopping DNA instability before repeats reach a disease-causing threshold.
  • Raudel Avila, assistant professor of mechanical engineering at Rice. Avila's project focuses on everyday health factors such as nutrition, hydration and brain blood flow and how they influence brain aging long before symptoms of dementia appear.
  • Isaac Hilton, associate professor of bioengineering at Rice, and Laura Lavery, assistant professor of biosciences at Rice. Hilton and Lavery's project uses precise CRISPR-based gene regulation to target multiple genetic drivers of neuronal damage in Alzheimer’s.
  • Quanbing Mou, assistant professor of chemistry at Rice, and Qing-Long Miao, assistant professor of neurology at Baylor College of Medicine. Mou and Miao's project aims to develop a gene-regulation therapy for childhood absence epilepsy by restoring activity of the CACNA1A gene.
  • Momona Yamagami, assistant professor of electrical and computer engineering at Rice, and Christopher Fagundes, professor of psychological sciences at Rice. Yamagami and Fagundes' project addresses the physical and mental health challenges faced by spouses caring for partners with Alzheimer’s disease and related dementias and aims to develop algorithms to determine the optimal timing and frequency of supportive text messages.
  • Han Xiao, professor of chemistry at Rice. Xiao's project aims to improve the delivery of antibody therapies to the brain using a noninvasive, light-based approach that temporarily opens the blood–brain barrier.
  • Lan Luan, associate professor of electrical and computer engineering at Rice. Luan's project investigates how tiny blood-vessel injuries in the brain, known as microinfarcts, contribute to dementia.
  • Natasha Kirienko, associate professor of biosciences at Rice. Kirienko's project targets a shared cause of neurodegeneration, impaired mitochondrial cleanup, and aims to identify an existing antidepressant that could be repurposed to protect neurons in diseases like Alzheimer’s and Parkinson’s.
  • Harini Iyer, assistant professor of biosciences at Rice. Iyer's project will observe zebrafish to investigate how the brain’s primary immune cells become improperly activated in neurological disorders, leading to the loss of healthy neurons and cognitive impairment.

The RBI also named the first four projects to receive research awards through the Rice and TMC Neuro Collaboration Seed Grant Program in January. Read more about those projects here.

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