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Thiobenzothiazole-modified Hydrocortisones Display Anti-inflammatory Activity with Reduced Impact on Islet β-Cell
Susan J Burke1, Amanda L May2, Robert C Noland3
1From the Laboratory of Islet Biology and Inflammation, the Departments of Nutrition and.
The Journal of Biological Chemistry
|April 9, 2015
Summary
New hydrocortisone derivatives (MS4 and MS6) show potential for enhanced glucocorticoid receptor (GR) activation. MS4 offers anti-inflammatory benefits with reduced impact on insulin secretion and adipogenesis, suggesting improved therapeutic options.
Area of Science:
- Endocrinology
- Pharmacology
- Molecular Biology
Background:
- Glucocorticoids are vital therapeutics but cause side effects like steroid-induced diabetes.
- Glucocorticoid receptor (GR) activation is key to their function.
- Modifying steroid structure may improve therapeutic efficacy and reduce complications.
Purpose of the Study:
- To investigate novel hydrocortisone derivatives (MS4, MS6) for altered GR activity.
- To assess their anti-inflammatory, insulin secretion, and adipogenic effects.
- To evaluate potential for improved glucocorticoid-based therapies.
Main Methods:
- Utilized rat insulinoma cells (832/13) and rodent/human islets.
- Assessed GR transactivation and transrepression activities.
- Evaluated anti-inflammatory, insulin secretion, and adipocyte differentiation effects in vitro.
- Analyzed Pck1 (Pepck) gene activation in hepatocytes.
Main Results:
- MS4 exhibited transrepression but not transactivation; MS6 retained both.
- Both MS4 and MS6 demonstrated anti-inflammatory activity.
- MS4 showed reduced impact on islet beta-cell function and no adipogenesis.
- MS6 promoted adipocyte development; neither derivative activated Pck1.
Conclusions:
- Hydrocortisone D-ring modifications yield compounds with distinct GR activity profiles.
- MS4 offers preserved anti-inflammatory effects with reduced metabolic side effects.
- These novel compounds represent potential alternatives to current glucocorticoid therapies.
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