Pain is a sensation realized by every individual at some point in his or her lives. Different causes of pain result in treatment by administration of drugs ranging from aspirin to morphine as the current standard of care. Morphine targets the opioid receptors as its ?on-target? mechanism of action. Unfortunately, prolonged treatment of pain with morphine causes many adverse effects such as addiction, tolerance, nausea, sedation, respiratory depression, constipation, and others. Thus, understanding the different mechanisms for pain perception, discovery of new molecular targets to treat pain with minimal undesired side effects, and the discovery and development of new therapeutic agents for the alleviation of pain is an on going effort by the scientific community world- wide. The goal of this research project is to characterize the unexplored human opioid receptor N-terminal domain peptides as a new chemotype for the treatment of pain and how they modulate opioid receptor pharmacology. The impact of the anticipated results on the medicinal chemistry and pain research fields could advance the existing paradigms for ligand design strategies for opioid peptide based therapeutics, GPCR based therapeutics, as well as provide novel tools to probe the molecular mechanisms of pain management.

Public Health Relevance

Pain is a complex sensation realized by most individuals at some point in his or her lives and the opioid receptor pathway has been identified to be involved in the regulation of pain management. The goal of this research project is characterize the opioid G-protein coupled receptor (GPCR) N-terminal domains that are postulated to modify the opioid receptor functional response. The impact of the anticipated results on the medicinal chemistry and pain research fields could advance the existing paradigms for ligand design strategies for opioid receptor based therapeutics, GPCR based therapeutics, as well as provide novel tools to probe pain management.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Research Project (R01)
Project #
1R01DA050894-01
Application #
9960913
Study Section
Biophysics of Neural Systems Study Section (BPNS)
Program Officer
Rapaka, Rao
Project Start
2020-05-01
Project End
2025-02-28
Budget Start
2020-05-01
Budget End
2021-02-28
Support Year
1
Fiscal Year
2020
Total Cost
Indirect Cost
Name
University of Minnesota Twin Cities
Department
Pharmacology
Type
Schools of Pharmacy
DUNS #
555917996
City
Minneapolis
State
MN
Country
United States
Zip Code
55455