Thiobenzothiazole-modified Hydrocortisones Display Anti-inflammatory Activity with Reduced Impact on Islet β-Cell Function.

Burke SJ, May AL, Noland RC, Lu D, Brissova M, Powers AC, Sherrill EM, Karlstad MD, Campagna SR, Stephens JM, Collier JJ
J Biol Chem. 2015 290 (21): 13401-16

PMID: 25851902 · PMCID: PMC4505588 · DOI:10.1074/jbc.M114.632190

Glucocorticoids signal through the glucocorticoid receptor (GR) and are administered clinically for a variety of situations, including inflammatory disorders, specific cancers, rheumatoid arthritis, and organ/tissue transplantation. However, glucocorticoid therapy is also associated with additional complications, including steroid-induced diabetes. We hypothesized that modification of the steroid backbone is one strategy to enhance the therapeutic potential of GR activation. Toward this goal, two commercially unavailable, thiobenzothiazole-containing derivatives of hydrocortisone (termed MS4 and MS6) were examined using 832/13 rat insulinoma cells as well as rodent and human islets. We found that MS4 had transrepression properties but lacked transactivation ability, whereas MS6 retained both transactivation and transrepression activities. In addition, MS4 and MS6 both displayed anti-inflammatory activity. Furthermore, MS4 displayed reduced impact on islet β-cell function in both rodent and human islets. Similar to dexamethasone, MS6 promoted adipocyte development in vitro, whereas MS4 did not. Moreover, neither MS4 nor MS6 activated the Pck1 (Pepck) gene in primary rat hepatocytes. We conclude that modification of the functional groups attached to the D-ring of the hydrocortisone steroid molecule produces compounds with altered structure-function GR agonist activity with decreased impact on insulin secretion and reduced adipogenic potential but with preservation of anti-inflammatory activity.

© 2015 by The American Society for Biochemistry and Molecular Biology, Inc.

MeSH Terms (28)

3T3-L1 Cells Animals Anti-Inflammatory Agents Apoptosis Benzimidazoles Benzothiazoles Blotting, Western Cell Proliferation Cells, Cultured Dexamethasone Gene Expression Profiling Hepatocytes Humans Hydrocortisone Immunoenzyme Techniques Inflammation Insulin Insulin Secretion Islets of Langerhans Metabolomics Mice Mice, Inbred C57BL Oxygen Consumption Rats Real-Time Polymerase Chain Reaction Reverse Transcriptase Polymerase Chain Reaction RNA, Messenger Thiazoles

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