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Updated: Aug 19, 2026

Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay
Published on: December 19, 2018
[SERM and SARM]
Hiroshi Kaji1, Toshitsugu Sugimoto
1Division of Endocrinology / Metabolism, Neurology, Hematology / Oncology, Department of Clinical Molecular Medicine, Kobe University Graduate School of Medicine.
Abstract:
There has been recent evidence about unfavorable effects of estrogen, while selective estrogen receptor modulators (SERM) with estrogen agonist and antagonist actions in a tissue selective manner have been developed. Among them, raloxifen inhibits the risk of vertebral fractures to a similar degree with bisphosphonates. From the same strategy, the study of selective androgen receptor modulators (SARM) has been in progress for the treatment of osteoporosis.
Insights
Selective estrogen receptor modulators (SERM) offer tissue-specific effects, with raloxifene reducing vertebral fractures. Selective androgen receptor modulators (SARM) are now being studied for osteoporosis treatment.
Area of Science:
- Endocrinology
- Pharmacology
- Bone Biology
Context:
- Estrogen therapy presents unfavorable effects.
- Selective estrogen receptor modulators (SERM) have been developed to provide tissue-specific estrogen agonist and antagonist actions.
- Raloxifene, a SERM, demonstrates efficacy in reducing vertebral fracture risk, comparable to bisphosphonates.
Purpose:
- To explore the development and potential of selective androgen receptor modulators (SARM) as a therapeutic strategy for osteoporosis.
- To leverage the tissue-selective modulation approach, previously successful with SERMs, for androgen signaling in bone.
Summary:
- Raloxifene exemplifies the success of tissue-selective receptor modulation in managing bone health.
- The principles guiding SERM development are being applied to create SARMs.
- Research is ongoing to investigate SARMs for osteoporosis treatment, aiming for similar therapeutic benefits with potentially improved safety profiles.
Impact:
- Advances in osteoporosis treatment through targeted therapies.
- Potential for novel therapeutic agents that modulate hormone receptor activity selectively.
- Improved management of bone loss and fracture prevention.
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