CaSR Role in Maintaining Calcium Concentration Uncovered
News Jun 01, 2016
A study led by researchers at Georgia State University provides new insights into the molecular basis of human diseases resulting from mutations in the calcium-sensing receptor (CaSR), a protein found in cell membranes.
Their findings, published in the journal Science Advances, may assist in the development of novel receptor-based therapeutics for mutations that lead to certain types of hypocalcemia and neonatal hyperparathyroidism, in addition to Alzheimer’s disease and some cancers.
Calcium is abundant in the human body and participates in nearly every vital process. CaSR plays a crucial role in maintaining calcium concentration in the human body. However, the molecular basis underlying how CaSR regulates such important cell function has been unclear.
“In this study, we reported the first crystal structure of the extracellular domain of the human CaSR, which enables us to visualize a large number of residues involved in disease-associated mutations,” said Jenny Yang, lead author on the paper, Distinguished University Professor and associate director of the Center for Diagnostics and Therapeutics at Georgia State.
Nearly 200 mutations and 15 polymorphisms associated with a variety of human disorders have been found in CaSR. In this study, researchers were able to map the mutations on the high-resolution CaSR structure. High-resolution structures of the CaSR are essential to gain a better understanding of the underlying mechanism in its regulated physiological functions as well as pathological activities.
“Further uncovering of the structural and functional mysteries of the calcium-sensing receptor could aid in the the development of novel receptor-based therapeutics for use in the treatment of many different diseases,” Yang said.
“It is quite interesting that an unexpected small molecule occupies the native ligand binding site and functions as a high-affinity co-activator, which suggests that it may serve as a lead compound for CaSR regulators,” said Jian Hu, paper co-author and assistant professor at Michigan State University.
The researchers’ discoveries lay the groundwork for the development of agonists and antagonists as potential therapies for human diseases related to the CaSR.
This work included researchers from Georgia State, Brigham and Women’s Hospital, Michigan State University and the University of Georgia, and was supported by the National Institutes of Health grants and the Georgia Research Alliance.
Compound as Effective as FDA-Approved Drugs Against Life-Threatening InfectionsNews
Purdue University researchers have identified a new compound that in preliminary testing has shown itself to be as effective as antibiotics approved by the Food and Drug Administration to treat life-threatening infections while also appearing to be less susceptible to bacterial resistance.READ MORE
Chemists Design 'Mini-ecosystems' to Test Drug FunctionNews
Scripps Research scientists have solved a major problem in chemistry and drug development by using droplet-sized 'miniecosystems' to quickly see if a molecule can function as a potential therapeutic.READ MORE
Targeting the Engine Room of the Cancer CellNews
Researchers at Columbia University Irving Medical Center (CUIMC) have developed a highly innovative computational framework that can support personalized cancer treatment by matching individual tumors with the drugs or drug combinations that are most likely to kill them.READ MORE
Comments | 0 ADD COMMENT
10th Annual Congress on Drug Formulation & Analytical Techniques
Sep 03 - Sep 04, 2018