| Bioactivity | SUN B8155, a non-peptide agonist of calcitonin (CT) receptor, selectively mimics the biological actions of calcitonin. Calcitonin, a 32-amino acid peptide hormone secreted mainly from the thyroid gland, plays an important role in maintaining bone homeostasis[1]. | ||||||||||||
| Invitro | SUN B8155 (1-1000 μM; 1 hour) stimulates intracellular cAMP formation in T47D cells in a concentration-dependent manner; the concentration of synthesized cAMP increased by approximately 42-fold at the highest concentration. SUN B8155 also stimulates cAMP formation in the rat osteogenic sarcoma-derived cell line, UMR106-06[1].SUN B8155 does not stimulate cAMP formation in CHO/hPTHR or parental CHO cells, but fully stimulates cAMP formation in CHO/hCTR cells in a concentration-dependent manner with an EC50 of 21 μM[1]. | ||||||||||||
| In Vivo | SUN B8155 (100 mg/kg; i.p.) results in a significant reduction of serum calcium concentration by approximately 9% at 30 min after administration. Human CT also reduces serum calcium in a dose-dependent manner at 30 min (0.1 and 0.3 μg/kg) and 60 min (0.3 μg/kg) after administration[1]. | ||||||||||||
| Name | SUN B8155 | ||||||||||||
| CAS | 345893-91-6 | ||||||||||||
| Formula | C14H15N3O3 | ||||||||||||
| Molar Mass | 273.29 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Katayama T, et al. Discovery of a non-peptide small molecule that selectively mimics the biological actions of calcitonin. Biochim Biophys Acta. 2001;1526(2):183-190. |