Glucose regulated protein 94 (Grp94) is the endoplasmic reticulum resident of the 90 kDa heat shock protein (Hsp90) family and represents a promising therapeutic target for the treatment of several diseases. Grp94 is the most unique member of the 90 kDa heat shock protein family due to a five amino acid insertion into its primary sequence, which creates hydrophobic subpockets exclusive to Grp94 that can be utilized for selective inhibition. The first resorcinol-based Grp94-selective inhibitor to take advantage of the hydrophobic S2 subpocket has been developed and shown to manifest low nanomolar affinity and similar to 10-fold selectivity for Grp94. Furthermore, these Grp94-selective inhibitors manifest low micromolar GI(50) values against multiple myeloma cells, supporting Grp94 as an emerging target for the treatment of this disease.
作者:Anuj Khandelwal、Vincent M. Crowley、Brian S. J. Blagg
DOI:10.1021/acsmedchemlett.7b00193
日期:2017.10.12
Glucose regulated protein 94 (Grp94) is the endoplasmic reticulum resident of the 90 kDa heat shock protein (Hsp90) family and represents a promising therapeutic target for the treatment of several diseases. Grp94 is the most unique member of the 90 kDa heat shock protein family due to a five amino acid insertion into its primary sequence, which creates hydrophobic subpockets exclusive to Grp94 that can be utilized for selective inhibition. The first resorcinol-based Grp94-selective inhibitor to take advantage of the hydrophobic S2 subpocket has been developed and shown to manifest low nanomolar affinity and similar to 10-fold selectivity for Grp94. Furthermore, these Grp94-selective inhibitors manifest low micromolar GI(50) values against multiple myeloma cells, supporting Grp94 as an emerging target for the treatment of this disease.