Funded Projects

The research team has developed ultrasonic drug uncaging for neuroscience, in which neuromodulatory agents are uncaged from ultrasound-sensitive biocompatible and biodegradable drug-loaded nanocarriers. This project will clinically translate ultrasonic ketamine uncaging for chronic pain therapy. In the UG3 phase, the research team will scale our nanoparticle production processes to human scales and adapt them to pharmaceutical standards. In the UH3 phase, they will complete a first-in-human evaluation of the safety and efficacy of ultrasonic ketamine uncaging by quantifying how much ketamine is released relative to the ultrasound dose and assessing whether the uncaged ketamine can modulate the sensitivity and affective response to pain, in patients suffering from chronic osteoarthritic pain. This project aims to yield a novel, noninvasive, non-opioid therapy for chronic pain that maximizes the therapeutic efficacy of ketamine over its side effects, by targeting its action to a critical hub of pain processing.

Mismanagement of orofacial chronic pain, such as temporomandibular joint and muscle disorders (TMJD) and oral cancer, substantially contributes to opioid overuse; overdose-related deaths; and cardiovascular, renal, and neurological complications at epidemic proportions. The current paradigm implies that orofacial conditions could trigger maladaptation of the immune system and plasticity supporting persistent inflammation, which influences the development and maintenance of orofacial chronic pain. LIGHT (TNFSF14) and Lymphotoxin-beta (LT?), members of the tumor necrosis factor superfamily, provide a balance between protective immunity and immunopathology during chronic inflammatory diseases. This project will test the hypothesis that targeting LIGHT and LT? signaling could prevent the development and inhibit the maintenance of chronic pain produced by TMJD and oral cancer, via peripheral mechanisms involving plasticity of immune, stromal, and tumor cells, as well as sensory neurons. The proposed research is significant as it advances our understanding of mechanisms regulating the development and maintenance of orofacial pain and offers new therapeutic targets and an immunotherapeutic approach for preventing and blocking chronic pain during TMJD and oral cancer.

There is an urgent need for non-opioid post-operative pain management solutions.  This research is developing a naturally absorbable polymer film that can release controlled amounts of the non-opioid analgesic bupivacaine – aiming to manage pain for several days following surgery. Project objectives are to optimize the timing of drug release, develop manufacturing standards, determine effective dosage for preserving motor function, and determine safety and efficacy in mouse models of neuropathic pain. Continued development of this film delivery system may lead to a new, non-opioid therapeutic strategy that could be combined with local anesthesia for up to 4 days after surgery to reduce or potentially eliminate opioids use.

Chronic musculoskeletal pain is common and often severe enough to be disabling. Some treatments such as cognitive behavioral therapies or analgesics may relieve pain for some, but not all patients. Combining effective therapies and providing support to ensure that patients are motivated to adhere to their treatment may prove to be more beneficial to patients than prescribing a drug or recommending a single non-pharmacological treatment. This study aims to evaluate a combination of complementary treatments and Registered Nurse (RN) support to motivate patients to use and maintain combined therapies. Some patients will receive phone-based motivational interviews with an RN to enhance their adherence to pain coping skills learned through web-based cognitive behavioral therapy in combination with duloxetine, a pain-relieving drug. Others will receive both treatments but will not receive support from an RN. The study aims to determine whether motivational nursing support enhances adherence to newly learned pain coping skills, and results in improved pain relief and physical function.

A main goal of the NIH HEAL Initiative and the Early Phase Pain Intervention Clinical Network (EPPIC-Net) is to improve pain management by discovering and validating biomarkers and non-opioid pain medications. This award will leverage the resources at the University of Washington’s EPPIC-Net’s Specialized Clinical Centers by implementing and evaluating strategies to improve the engagement, recruitment, and retention of individuals from underserved racial/ethnic minority populations to participate in EPPIC-Net clinical trials. The site’s network spans multiple states and specialties, allowing access to geographically and demographically diverse patient populations, including underrepresented and underserved populations. 

Chronic pain affects over 100 million Americans, costing society about $600 billion annually. Despite numerous pharmacological and non-pharmacological therapies, over 50% of chronic pain sufferers feel little control over their pain. CognifiSense has developed a patent-pending Virtual Reality Psychological Therapy (VRPT), which is designed to create lasting reduction of chronic pain by addressing the maladaptive learning processes driving pain chronification. VRPT is an experiential learning system, which provides the brain a new set of signals that teaches it that the pain is not as bad as it perceived and that it has greater control over the pain than it perceived. VRPT combines the immersive power and the ability to individualize the therapy of Virtual Reality with well-researched principles of self-distancing, self-efficacy, and extinction to retrain the brain. The goal of this study is to determine the clinical feasibility of VRPT in achieving a lasting reduction of chronic pain, establish brain mechanisms associated with treatment response, and collect comprehensive user feedback to enable further refinement of the current product prototype. CognifiSense's VRPT has the potential to be a significant clinical and business opportunity in the treatment of chronic pain.

Interstitial cystitis/bladder pain syndrome is a debilitating disease affecting many women. Opioid-based pain management is a common feature of current treatment approaches but is associated with the risk of addiction. The causes of this disorder remain unknown, and no effective treatments are available. This project will provide new insights using genetic, medication-based and other approaches in a mouse model, along with single-cell gene expression studies conducted with cells from mice and human patients who have this condition. The analyses will help provide targeted, safe, and effective treatment approaches for individuals with interstitial cystitis/bladder pain syndrome.

About 14% of U.S. adults report experiencing migraine symptoms within any given 3-month period, making it the second most disabling illness in the world. Nonspecific pain medications used in migraine (e.g., acetaminophen, nonsteroidal inflammatory drugs, opioids) are often not effective for severe migraine symptoms or cause significant adverse effects. A research team of migraine care specialists, device and drug developers, and clinical research specialists has created a technology for accurately delivering self-administered migraine medication to the upper nasal cavity. The technology enables development of a self-administered therapy to provide rapid pain relief without harsh and addictive side effects of existing migraine medications. This project will establish efficacy and evaluate commercial design feasibility for this treatment.

There is increasing evidence that satellite glial cells (SGCs) surrounding neurons in the dorsal root ganglia modulate sensory processing and are important for chronic pain. Tissue inhibitor of metalloproteinase 3 (TIMP3) signaling occurs in SGCs and has unique plethoric functions in inhibiting matrix metalloproteinases, the tumor necrosis factor-?-converting enzyme, and the vascular endothelial growth factor receptor 2, all of which have been implicated in inflammation and pain. This study will test the hypothesis that expression of TIMP3 in SGCs is critical for the neuroimmune homeostasis in sensory ganglia, as well as for the development of pain, and therefore could be a novel therapeutic target for acute and chronic pain. Given the expression of TIMP3 in human SGCs and the strong validation of multiple small molecules targeting TIMP3 signaling, including FDA-approved drugs, in various animal models of pain and in cultured human SGCs, the successful completion of this research project has a high likelihood of rapid translation into therapeutic testing in inflammatory pain conditions that are a risk for opioid abuse.

Opioids affect the body by attaching to certain types of receptors that attach to G-proteins (particularly, a subtype called G-alpha). Opioids vary in their ability to provide pain relief as well as in their ability to require more drug to provide a response, known as tolerance. This project will explore the potential of various G-alpha subunits to increase or decrease opioid receptor signaling. The research findings will lay the groundwork for tailoring G-alpha related opioid effects to provide more pain relief while being less addictive.

Researchers will develop an innovative three-dimensional (3D) model of acute and chronic nociception using human induced pluripotent stem cell (hiPSC) sensory neurons and satellite glial cell surrogates. They will develop a tissue chip for modeling acute and chronic nociception based on 3D hiPSC-based dorsal root ganglion tissue mimics and a high-content, moderate-throughput microelectrode array. Researchers will demonstrate stable spontaneous and noxious stimulus-evoked behavior in response to thermal, chemical, and electrical stimulation challenges. They aim to demonstrate sensitivity to translational control via ligand receptor interactions between neuronal and non-neuronal cell types. They also will demonstrate the quantitative efficiency and preclinical efficacy of our system by detecting known ligand-based modulators of translational control and voltage-gated ion channel antagonists in a sensitized model of chronic nociception. Researchers will leverage the high-throughput nature of our tissue chip model to screen Food and Drug Administration–approved bioactive compounds.

The Medical University of South Carolina (MUSC) Specialized Clinical Center (Hub) of the Early Phase Pain Investigation Clinical Network (EPPIC-Net) will provide a robust and readily accessible infrastructure for rapid implementation and performance of high-quality comprehensive studies of novel treatments for patients with a wide variety of pain conditions. The MUSC-Hub will harness multidisciplinary clinical, research, statistical, and data management expertise to provide the scientific leadership and infrastructure required to design and conduct multisite Phase II clinical trials, biomarker validation studies, and deep phenotyping of patient populations as part of the EPPIC-Net with the overall goal of accelerating the development of new therapies for patients with acute and/or chronic pain.

This study addresses the public health problem of chronic pain as one of the most feared symptoms in people with cancer. Insufficient relief from pharmacological treatments and the fear of side effects are important reasons for the growing use of complementary pain management approaches in people with cancer. One such approach is music therapy. Although efficacy of music therapy for pain has been established, there are no mechanistic studies clarifying how it works in clinical populations. The overarching goals of this study are to 1) examine mediators and moderators hypothesized to account for the pain-reducing effects of interactive music therapy (IMT) in people with advanced cancer and chronic pain and 2) validate IMT’s theory of action. The results of this study will provide estimated effects sizes of IMT on the mediators and preliminary effect size estimates for the pain outcomes. This information will be instrumental in the development of a subsequent large-scale efficacy trial.