Implantable device shrinks pancreatic tumors
Taming pancreatic cancer with intratumoral immunotherapy.
Houston Methodist nanomedicine researchers have found a way to tame pancreatic cancer – one of the most aggressive and difficult to treat cancers – by delivering immunotherapy directly into the tumor with a device that is smaller than a grain of rice.
In a paper recently published in Advanced Science, Houston Methodist Research Institute researchers used an implantable nanofluidic device they invented to deliver CD40 monoclonal antibodies (mAb), a promising immunotherapeutic agent, at a sustained low-dose via the nanofluidic drug-eluting seed (NDES). The result, found in murine models, was tumor reduction at a fourfold lower dosage than traditional systemic immunotherapy treatment.
“One of the most exciting findings was that even though the NDES device was only inserted in one of two tumors in the same animal model, we noted shrinkage in the tumor without the device,” said Corrine Ying Xuan Chua, Ph.D., co-corresponding author and assistant professor of nanomedicine at Houston Methodist Academic Institute. “This means that local treatment with immunotherapy was able to activate the immune response to target other tumors. In fact, one animal model remained tumor-free for the 100-days of continued observation.”
Pancreatic ductal adenocarcinoma is frequently diagnosed at advanced stages. In fact, about 85% of patients already have metastatic disease at diagnosis.
The Houston Methodist researchers are studying similar nanofluidic delivery technology on the International Space Station. Grattoni’s nanomedicine lab at Houston Methodist focuses on implantable nanofluidics-based platforms for controlled and long-term drug delivery and cell transplantation to treat chronic diseases.
Immunotherapy holds promise in treating cancers that previously did not have good treatment options. However, because immunotherapy is delivered throughout the entire body, it causes many side effects that are sometimes long-lasting, if not life-long. By focusing the delivery directly into the tumor, the body is protected from being exposed to toxic drugs and fewer side effects, essentially allowing patients undergoing treatment to have a better quality of life.
“Our goal is to transform the way cancer is treated. We see this device as a viable approach to penetrating the pancreatic tumor in a minimally invasive and effective manner, allowing for a more focused therapy using less medication,” said Alessandro Grattoni, Ph.D., co-corresponding author and chair of the Department of Nanomedicine at Houston Methodist Research Institute.
The NDES device consists of a stainless-steel drug reservoir containing nanochannels, thus creating a membrane that allows for sustained diffusion when the drug is released.
Other medical technology companies offer intratumoral drug-eluting implants for cancer therapeutics, but those are intended for shorter duration use. The Houston Methodist nanofluidic device is intended for long-term controlled and sustained release, avoiding repeated systemic treatment that often leads to adverse side effects.
Additional lab research is underway to determine the effectiveness and safety of this delivery technology, but researchers would like to see this become a viable option for cancer patients in the next five years.
Houston Methodist Research Institute collaborators on this study include Hsuan-Chen Liu, Daniel Davila Gonzalez, Dixita Ishani Viswanath, Robin Shae Vander Pol, Shani Zakiya Saunders, Nicola Di Trani, Yitian Xu, Junjun Zheng and Shu-Hsia Chen.
This research received funding support from the Golfers Against Cancer and the National Institutes of Health (NIH-NIGMS R01GM127558).
For more information about Houston Methodist, visit houstonmethodist.org. Follow us on Twitter, Facebook and On Health.
For more information: Sustained Intratumoral Administration of Agonist CD40 Antibody Overcomes Immunosuppressive Tumor Microenvironment in Pancreatic Cancer. Advanced Science. Online Jan. 19, 2023. Hsuan-Chen Liu, Daniel Davila Gonzalez, Dixita Ishani Viswanath, Robin Shae Vander Pol, Shani Zakiya Saunders, Nicola Di Trani, Yitian Xu, Junjun Zheng, Shu-Hsia Chen, Corrine Ying Xuan Chua andAlessandro Grattoni. DOI: 10.1002/advs.202206873
Journal: Advanced Science
DOI: 10.1002/advs.202206873
Method of Research: Experimental study
Subject of Research: Animals
Article Title: Sustained Intratumoral Administration of Agonist CD40 Antibody Overcomes Immunosuppressive Tumor Microenvironment in Pancreatic Cancer
Article Publication Date: 19-Jan-2023
Media Contact
Gale Smith
Houston Methodist
GSmith@houstonmethodist.org
Office: 832-667-5843
Cell: 2816270439
All latest news from the category: Medical Engineering
The development of medical equipment, products and technical procedures is characterized by high research and development costs in a variety of fields related to the study of human medicine.
innovations-report provides informative and stimulating reports and articles on topics ranging from imaging processes, cell and tissue techniques, optical techniques, implants, orthopedic aids, clinical and medical office equipment, dialysis systems and x-ray/radiation monitoring devices to endoscopy, ultrasound, surgical techniques, and dental materials.
Newest articles
The last missing piece of silicon photonics
International research team presents first electrically pumped continuous-wave semiconductor laser suitable for seamless silicon integration. Scientists from Forschungszentrum Jülich, FZJ, the University of Stuttgart, and the Leibniz Institute for High…
Space-time crystals, an important step toward new optical materials
KIT scientists design tailored materials for optical information processing. Photonic space-time crystals are materials that could increase the performance and efficiency of wireless communication or laser technologies. They feature a…
Quasiparticle loss in extreme quantum materials
A new study by Rice University physicist Qimiao Si unravels the enigmatic behaviors of quantum critical metals — materials that defy conventional physics at low temperatures. Published in Nature Physics…