Houston company uses stem cell technology to treat patients suffering from degenerative diseases

Regeneration nation

Celltex's stem cell technology has received positive results from its multiple sclerosis, Parkinson's, and rheumatoid arthritis patients. Courtesy of Celltex

The medical community has former governor Rick Perry to thank for a major stride in regenerative medicine.

"He had just gotten elected for the last time and he wanted to leave a legacy. He was tired of people going to Japan or Germany when they needed stem cells," recalls David Eller, chairman, co-founder and CEO of Celltex.

That was 2011, the year that the former president of Dupont Pharmeceuticals-Europe and orthopedic surgeon Dr. Stanley Jones incorporated as Celltex. Perry got the law passed to make it legal to harvest his stem cells, and Jones implanted them while the governor was under the knife for a spinal fusion surgery.

Perry resigned from the Celltex board in 2017, but the truth is, the company no longer needed his clout. Just a year after its debut, the company had in excess of 200 clients, each paying a banking enrollment fee of $6,500. Now, there are close to 1,300.

From research to recovery
Eller is originally from Houston, and he says his hometown is the ideal home base for the company, with its access to the world's largest medical center. The Galleria-area office and lab employ 35 people, with about 50 workers worldwide.

Close to the same time that his friend Perry received his stem cells, Eller also had the treatment in hopes of resolving pain from a college football injury.

"I would go to work and put four to six Advil in my pocket," the CEO recalls.

Within months, all of them remained in his pocket.

But others have had even more dramatic results. Celltex checks in with patients three, six and nine months after their treatments to find out how they're doing. Eighty-three percent of multiple sclerosis patients have reported improvement of symptoms specific to their disease, as have 73 percent of Parkinson's sufferers. But the staggering fact is that 100 percent of 58 respondents with rheumatoid arthritis say they have benefited.

Implementation and the FDA
Celltex's chief scientific officer, Dr. Jane Young, co-authored a study of two severe juvenile rheumatoid arthritis patients whose conditions didn't respond to standard treatments. After trying stem cells, both reported marked improvement in autonomic nervous system and immune function.

Stem cells are gathered through a patient's fat, which can be extracted at any of the 80 facilities around the country that partner with Celltex. The fat is processed at the Houston lab, where processing takes 30 to 35 days.

"We have 15 billion cells in process each day," says Erik Eller, the company's vice president of operations, clarifying that some clients' cells grow faster than others'.

It takes 14 days to come out of cryostasis and leave the lab. From there, the stem cells travel to Hospital Galenia in Cancun, Mexico for implantation, since the FDA categorizes stem cells as a drug if they have expanded as they do at Celltex. That means that a patient cannot use his own stem cells in the United States without a clinical trial. To circumnavigate the red tape, Celltex has simply partnered with the luxurious Mexican hospital.

This is currently the company's biggest challenge, says David Eller, but one he expects to overcome.

"We have very good relations with the US FDA," he says. "They are very interested in what we know. Our approach is really is very progressive and we've grown every year."

Ultimately, Eller hopes to be able to implant stem cells in the United States. But the company's foreign growth is a good start. Celltex is now operating in the Bahamas and is hoping to add Australian extraction facilities sometime this year. They are also in negotiations with a team from Saudi Arabia interested in expanding Celltex to the Middle East.

Other goals for Celltex include improvements both in the realms of sales and revenue and streamlining and improving the safety and efficacy of treatment. Research collaborations with Baylor College of Medicine and Texas A&M will help with the company's medical credibility. This all may help to convince the FDA to allow the Celltex to get a biologics license, the final proof that it is not a drug company. But no matter how it's categorized, Celltex is growing exponentially as its cells.

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Rice team keeps CO2-to-fuel devices running 50 times longer in new study

Bubbling Up

In a new study published in the journal Science, a team of Rice University researchers shared findings on how acid bubbles can improve the stability of electrochemical devices that convert carbon dioxide into useful fuels and chemicals.

The team led by Rice associate professor Hoatian Wang addressed an issue in the performance and stability of CO2 reduction systems. The gas flow channels in the systems often clog due to salt buildup, reducing efficiency and causing the devices to fail prematurely after about 80 hours of operation.

“Salt precipitation blocks CO2 transport and floods the gas diffusion electrode, which leads to performance failure,” Wang said in a news release. “This typically happens within a few hundred hours, which is far from commercial viability.”

By using an acid-humidified CO2 technique, the team was able to extend the operational life of a CO2 reduction system more than 50-fold, demonstrating more than 4,500 hours of stable operation in a scaled-up reactor.

The Rice team made a simple swap with a significant impact. Instead of using water to humidify the CO2 gas input into the reactor, the team bubbled the gas through an acid solution such as hydrochloric, formic or acetic acid. This process made more soluble salt formations that did not crystallize or block the channels.

The process has major implications for an emerging green technology known as electrochemical CO2 reduction, or CO2RR, that transforms climate-warming CO2 into products like carbon monoxide, ethylene, or alcohols. The products can be further refined into fuels or feedstocks.

“Using the traditional method of water-humidified CO2 could lead to salt formation in the cathode gas flow channels,” Shaoyun Hao, postdoctoral research associate in chemical and biomolecular engineering at Rice and co-first author, explained in the news release. “We hypothesized — and confirmed — that acid vapor could dissolve the salt and convert the low solubility KHCO3 into salt with higher solubility, thus shifting the solubility balance just enough to avoid clogging without affecting catalyst performance.”

The Rice team believes the work can lead to more scalable CO2 electrolyzers, which is vital if the technology is to be deployed at industrial scales as part of carbon capture and utilization strategies. Since the approach itself is relatively simple, it could lead to a more cost-effective and efficient solution. It also worked well with multiple catalyst types, including zinc oxide, copper oxide and bismuth oxide, which are allo used to target different CO2RR products.

“Our method addresses a long-standing obstacle with a low-cost, easily implementable solution,” Ahmad Elgazzar, co-first author and graduate student in chemical and biomolecular engineering at Rice, added in the release. “It’s a step toward making carbon utilization technologies more commercially viable and more sustainable.”

A team led by Wang and in collaboration with researchers from the University of Houston also recently shared findings on salt precipitation buildup and CO2RR in a recent edition of the journal Nature Energy.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.

Houston foundation grants $27M to support Texas chemistry research

fresh funding

Houston-based The Welch Foundation has doled out $27 million in its latest round of grants for chemical research, equipment and postdoctoral fellowships.

According to a June announcement, $25.5 million was allocated for the foundation's longstanding research grants, which provide $100,000 per year in funding for three years to full-time, regular tenure or tenure-track faculty members in Texas. The foundation made 85 grants to faculty at 16 Texas institutions for 2025, including:

  • Michael I. Jacobs, assistant professor in the chemistry and biochemistry department at Texas State University, who is investigating the structure and thermodynamics of intrinsically disordered proteins, which could "reveal clues about how life began," according to the foundation.
  • Kendra K. Frederick, assistant professor in the biophysics department at The University of Texas Southwestern Medical Center, who is studying a protein linked to Parkinson’s disease.
  • Jennifer S. Brodbelt, professor in chemistry at The University of Texas at Austin, who is testing a theory called full replica symmetry breaking (fullRSB) on glass-like materials, which has implications for complex systems in physics, chemistry and biology.

Additional funding will be allocated to the Welch Postdoctoral Fellows of the Life Sciences Research Foundation. The program provides three-year fellowships to recent PhD graduates to support clinical research careers in Texas. Two fellows from Rice University and Baylor University will receive $100,000 annually for three years.

The Welch Foundation also issued $975,000 through its equipment grant program to 13 institutions to help them develop "richer laboratory experience(s)." The universities matched funds of $352,346.

Since 1954, the Welch Foundation has contributed over $1.1 billion for Texas-nurtured advancements in chemistry through research grants, endowed chairs and other chemistry-related ventures. Last year, the foundation granted more than $40.5 million in academic research grants, equipment grants and fellowships.

“Through funding basic chemical research, we are actively investing in the future of humankind,” Adam Kuspa, president of The Welch Foundation, said the news release. “We are proud to support so many talented researchers across Texas and continue to be inspired by the important work they complete every day.”

New Houston biotech co. developing capsules for hard-to-treat tumors

biotech breakthroughs

Houston company Sentinel BioTherapeutics has made promising headway in cancer immunotherapy for patients who don’t respond positively to more traditional treatments. New biotech venture creation studio RBL LLC (pronounced “rebel”) recently debuted the company at the 2025 American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago.

Rima Chakrabarti is a neurologist by training. Though she says she’s “passionate about treating the brain,” her greatest fervor currently lies in leading Sentinel as its CEO. Sentinel is RBL’s first clinical venture, and Chakrabarti also serves as cofounder and managing partner of the venture studio.

The team sees an opportunity to use cytokine interleukin-2 (IL-2) capsules to fight many solid tumors for which immunotherapy hasn't been effective in the past. “We plan to develop a pipeline of drugs that way,” Chakrabarti says.

This may all sound brand-new, but Sentinel’s research goes back years to the work of Omid Veiseh, director of the Rice Biotechnology Launch Pad (RBLP). Through another, now-defunct company called Avenge Bio, Veiseh and Paul Wotton — also with RBLP and now RBL’s CEO and chairman of Sentinel — invested close to $45 million in capital toward their promising discovery.

From preclinical data on studies in mice, Avenge was able to manufacture its platform focused on ovarian cancer treatments and test it on 14 human patients. “That's essentially opened the door to understanding the clinical efficacy of this drug as well as it's brought this to the attention of the FDA, such that now we're able to continue that conversation,” says Chakrabarti. She emphasizes the point that Avenge’s demise was not due to the science, but to the company's unsuccessful outsourcing to a Massachusetts management team.

“They hadn't analyzed a lot of the data that we got access to upon the acquisition,” explains Chakrabarti. “When we analyzed the data, we saw this dose-dependent immune activation, very specific upregulation of checkpoints on T cells. We came to understand how effective this agent could be as an immune priming agent in a way that Avenge Bio hadn't been developing this drug.”

Chakrabarti says that Sentinel’s phase II trials are coming soon. They’ll continue their previous work with ovarian cancer, but Chakrabarti says that she also believes that the IL-2 capsules will be effective in the treatment of endometrial cancer. There’s also potential for people with other cancers located in the peritoneal cavity, such as colorectal cancer, gastrointestinal cancer and even primary peritoneal carcinomatosis.

“We're delivering these capsules into the peritoneal cavity and seeing both the safety as well as the immune activation,” Chakrabarti says. “We're seeing that up-regulation of the checkpoint that I mentioned. We're seeing a strong safety signal. This drug was very well-tolerated by patients where IL-2 has always had a challenge in being a well-tolerated drug.”

When phase II will take place is up to the success of Sentinel’s fundraising push. What we do know is that it will be led by Amir Jazaeri at MD Anderson Cancer Center. Part of the goal this summer is also to create an automated cell manufacturing process and prove that Sentinel can store its product long-term.

“This isn’t just another cell therapy,” Chakrabarti says.

"Sentinel's cytokine factory platform is the breakthrough technology that we believe has the potential to define the next era of cancer treatment," adds Wotton.

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