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Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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1RSR Ltd, FIRS Laboratories, Parc Ty Glas, Llanishen, Cardiff, CF14 5DU, UK. brs@firs-rsr.co.uk.
Thyroid Research
|July 10, 2026
Summary
Thyroid disease research advanced with discoveries of thyroid stimulating autoantibodies and TSH receptor autoantibodies. Monoclonal antibodies like K1-70™ offer new treatments for Graves' disease.
Area of Science:
- Endocrinology
- Immunology
- Structural Biology
Background:
- Thyroid disease understanding advanced significantly since 1956 with key discoveries.
- Long-acting thyroid stimulator (LATS) and thyroglobulin autoantibodies were identified in Graves' and Hashimoto's diseases, respectively.
- TSH receptor (TSHR) autoantibodies are central to Graves' disease pathogenesis.
Purpose of the Study:
- To detail the structural basis of TSHR autoantibody function.
- To understand how different autoantibodies interact with the TSHR.
- To evaluate novel TSHR-blocking monoclonal antibodies for therapeutic potential.
Main Methods:
- Production and characterization of human monoclonal autoantibodies against the TSHR (M22™, K1-18™, 5C9™, K1-70™).
- Determination of crystal structures and Cryo-EM analysis of TSHR complexes with these autoantibodies.
- Clinical trials of K1-70™ for Graves' hyperthyroidism and ophthalmopathy.
Main Results:
- Detailed structural insights into TSHR autoantibody binding and function.
- Identification of stimulating (K1-18™) and blocking (5C9™, K1-70™) autoantibodies.
- K1-70™ demonstrated significant therapeutic efficacy in clinical trials for Graves' disease.
Conclusions:
- TSHR autoantibodies play a critical role in thyroid autoimmunity.
- Structural studies elucidate the mechanisms of TSHR modulation by autoantibodies.
- K1-70™ represents a promising new TSHR-specific therapeutic agent for Graves' disease.
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