Funded Projects

There is a clear public health imperative to improve the care and outcomes of people who experience severe acute and chronic pain. The Early Phase Pain Investigation Clinical Network (EPPIC-Net) is charged with conducting deep phenotyping and biomarker studies for specific pain conditions – and with conducting high-quality phase II clinical trials to test novel non-opioid pain treatments with academic and industry partners. This research will extend EPPIC-Net’s current portfolio to develop novel and efficient data-analytic methodologies for complex medical data, such as those that are expected to be generated by the clinical trials conducted by EPPIC-Net.

Current medications for chronic pain are largely ineffective and rely heavily on opioids, one contributor to the nation’s opioid crisis. The endocannabinoid system that consists of cannabinoid receptors (CB1R and CB2R) and their endogenous ligands is a natural pathway in the human body and has emerged as an alternative target for developing new pain medications with few side effects. Current molecules that bind to CB1R in the brain and spinal cord have psychoactive side effects, limiting their therapeutic use for treating chronic pain. This study aims to develop new molecules to bind to CB1R tightly and selectively, are metabolically stable, and are also unable to enter the brain.

As prescription opioid drug abuse and overdose-related deaths continue to skyrocket in the United States, the need for new and more effective non-addictive pain drugs to treat chronic pain remains critical. This research is conducting studies in animal models of a small molecule that has high potential to treat chronic pain conditions associated with neuropathy and/or inflammation. The goal of this project is to conduct dosing and other studies leading up to an animal model study of the potential drug in a toxicology study for 28 days. Results may lead to Investigative New Drug regulatory clearance to begin clinical studies to validate the potential drug’s efficacy and safety.

The emergency department is an ideal venue to reach and intervene with adolescents and young adults at risk for opioid misuse, particularly as young adults may disconnect from primary care when transitioning out of care in pediatric settings. This study will evaluate the efficacy of interventions of varying type and intensity to prevent or reduce opioid misuse or opioid use disorder. The research leverages technology that is appealing to youth to facilitate intervention delivery by health coaches. In this study, adolescents and young adults in the emergency department screening positive for opioid use or misuse will be randomly assigned to one of four intervention conditions with outcomes measured at 4, 8, and 12 months. Technology-driven, scalable interventions delivered via health coaches allow for real-time tailoring to the rapidly changing opioid epidemic, with the potential to prevent an increase in opioid misuse among adolescents and young adults.  Black/African American youth are at increased risk for opioid and other substance use, but they often do not participate in research studies. As a result, it is not known how well prevention interventions work with Black/African American people. This supplement will focus on increasing participant diversity and inclusion by recruiting additional Black/African American participants for this ongoing randomized controlled study of technology-driven prevention interventions.

Cholecystokinin B receptor (CCKBR) is a molecule found in the brain that helps regulate anxiety and depression but also influences the development of tolerance to opioids. CCKBR levels are also increased in models of nerve injury-induced (neuropathic) pain. Therefore, targeting CCKBR may offer a new approach to treating neuropathic pain and the associated anxiety and depression. Researchers have developed mouse antibodies that can inactivate CCKBR. However, to be usable in humans without causing an immune response, these antibodies need to be modified to include more human sequences. This project will use a fragment of the CCKBR antibody, modify it with the addition of human antibody sequences, and then select the clones that bind most strongly and specifically to human CCKBR. These will then be tested in cell and animal models of neuropathic pain to identify the most promising candidates for further evaluation in humans.

Most opioid misuse begins during adolescence and young adulthood. Adolescence is the best time for prevention interventions in settings like school-based health centers (HCs), yet few programs focus on preventing initiation of opioid misuse. This study harnesses the power of video game interventions and incorporates components of effective substance use prevention programs to develop an evidence-informed intervention to prevent the initiation of opioid misuse in adolescents. In partnership with the national School-Based Health Alliance (SBHA), researchers will develop and test a new video game intervention, PlaySmart. It will build on our previous video game intervention that has demonstrated efficacy in improving attitudes and knowledge related to risk behaviors. The study will evaluate the game in a randomized controlled trial in 10 school-based HCs and examine strategies for implementing PlaySmart in school-based HCs nationally. This research has considerable potential for wide implementation, reach, and impact on high-risk adolescents through school-based HCs.

The parent project’s Housing First initiative can be divided into two interconnected goals: (1) to reduce the likelihood of substance misuse and the development of an opioid use disorder and (2) to provide youth with housing stability and opioid and related risk prevention services that will assist them in exiting homelessness. The proposed supplement project complements the goals of the parent grant project by exploring two additional components that are related to exiting homelessness and reducing substance misuse or the development of opioid use disorder: (1) to further investigate youth’s interactions with social service providers, via qualitative methods, with the goal of cultivating a detail understanding actionable practices as it relates to fostering successful interactions between substance using homeless youth and service providers and (2) to evaluate, via quantitative methods, the extent to which ethnic identity protects youth from the negative effects of discrimination, substance misuse, and the development of a opioid use disorder.

Disruptions in make-up of the microbiome are associated with disorders characterized by chronic pain and inflammation, such as rheumatoid arthritis and fibromyalgia. The gut microbiome has immune and metabolic effects, and human gut-derived bacteria may be a source of novel, safe, and non-addictive pain treatments. However, connections between gut and pain signals, known as the “gut–pain axis,” are still poorly understood. This study aims to identify human-gut-native bacteria that i) interact with known pain targets in lab studies, ii) test their activity and analgesic/anti-inflammatory potential in an animal model, and iii) develop a computational approach to predict microbial-genetic effects on pain signals.

The need to develop non-opioid therapeutics for chronic pain is greater than ever.  One option being explored is inhibiting the activity of calpains – enzymes that have been shown to cause pain in animal models of chronic pain.  Using an artificial intelligence (AI)-driven drug discovery platform, researchers have uncovered and validated four calpain-1 inhibitors using biochemical assays.  This study by 1910 Genetics Inc. hopes to synthesize multiple analogs of its most potent discovered calpain-1 inhibitor and determine its effectiveness against calpain-2 and certain enzymes that break down proteins.  Findings that successfully significantly inhibit calpain-1 in at least one animal model of chronic pain could lead to the first oral, central nervous system penetrating selective calpain-1 inhibitor [non-opioid therapeutic] for chronic pain.

Knee osteoarthritis is one of the leading causes of disability worldwide, particularly among older adults. Despite multiple guidelines for care, most patients do not receive adequate treatment, and about 30% are prescribed long-term opioids. This award will be used to recruit and support an early career faculty member from a group underrepresented in biomedicine. This research, part of the Pain Management Effectiveness Research Network will evaluate conservative and more aggressive treatments for knee osteoarthritis and determine which individual-level factors contribute to treatment outcomes.

Patients with severe, intractable chronic pain primarily receive treatment with opioids, and non-opioid treatment options are urgently needed. These patients may be candidates for treatment using other types of pain medications administered via intrathecal injection—that is, injection directly into the fluid-filled space between the membranes surrounding the brain and spinal cord. Intrathecal injection requires much lower medication doses than systemic administration. Centrexion Therapeutics Corporation seeks to develop CNTX-3100, a highly selective and highly potent novel small molecule that activates the nociception receptor (NOPr), for intrathecal administration using a pump approved by the U.S. Food and Drug Administration. In animal studies, such NOPr agonists had powerful analgesic effects when delivered directly to the spinal cord by intrathecal administration. CNTX-3100 has ideal properties for intrathecal delivery and in animal studies provided pain relief and a safety profile that was superior to intrathecally administered morphine. This project will scale up the drug, develop a formulation that ensures a stable product for intrathecal delivery, and conduct preclinical toxicity studies to prepare for a Phase 1 clinical trial.

Over-the-counter medicines such as non-steroidal anti-inflammatory drugs are ineffective for treating severe chronic pain and may have serious side effects from continued use, which limits treatment options. A kinase (an enzyme whose activity targets a specific molecule) called TAK1 is involved in the chronic pain process. This research will develop a molecule previously shown to be effective in a model of inflammatory pain that also inhibits TAK1. A main goal will be to determine if this inhibitor (takinib analog HS-276) can cross the blood-brain barrier and, if successful, pursue FDA  Investigative New Drug-enabling safety studies leading to a Phase I clinical trial and a potential new chronic pain treatment.