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Novel biological response modifiers derived from thalidomide

¹Institute of Molecular and Cellular Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan.

Current Medicinal Chemistry

|July 1, 1998

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Thalidomide analogs show promise as novel biological response modifiers by regulating tumor necrosis factor-alpha (TNF-alpha) production. Structural modifications have yielded potent inhibitors and enhancers, with some analogs also acting as androgen antagonists.

Area of Science:

Medicinal Chemistry
Immunology
Pharmacology

Background:

Thalidomide, withdrawn due to teratogenicity, is regaining interest for treating diseases like AIDS and GVHD.
Its efficacy is linked to modulating tumor necrosis factor-alpha (TNF-alpha), a cytokine with diverse roles in immunity and disease.
Dysregulated TNF-alpha contributes to various pathologies, making its production regulators valuable therapeutic targets.

Purpose of the Study:

To investigate the potential of thalidomide analogs as superior regulators of TNF-alpha production.
To explore structure-activity relationships of novel phenyl- and benzylphthalimide analogs.
To identify compounds with selective inhibitory or enhancing activities on TNF-alpha production.

Main Methods:

Synthesis and structural modification of thalidomide to create phenyl- and benzylphthalimide analogs.

Related Experiment Videos

Evaluation of the analogs' activity on TNF-alpha production.

Investigation of structure-activity relationships, including electronic and enantiomeric dependencies.

Main Results:

Thalidomide exhibits bidirectional regulation of TNF-alpha production, dependent on cell type and inducer.
Phenyl- and benzylphthalimide analogs demonstrated more potent TNF-alpha modulating activity than thalidomide.
Activity was found to be electronic state- and enantio-dependent, yielding pure inhibitors and enhancers.
Further development led to potent non-steroidal androgen antagonists.

Conclusions:

Structural modifications of thalidomide can yield potent and selective TNF-alpha production regulators.
These analogs represent promising candidates for novel biological response modifiers.
The development has also led to potent non-steroidal androgen antagonists, expanding therapeutic potential.