| Structural highlights
Function
[PRGR_HUMAN] The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Progesterone receptor isoform B (PRB) is involved activation of c-SRC/MAPK signaling on hormone stimulation.[1] [2] [3] [4] [5] [6] [7] Isoform A is inactive in stimulating c-Src/MAPK signaling on hormone stimulation.[8] [9] [10] [11] [12] [13] [14]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Progesterone receptor (PR) agonists have several important applications in women's health, such as in oral contraception and post-menopausal hormone therapy. Currently, all PR agonists used clinically are steroids. Because of their interactions with other steroid receptors, steroid-metabolizing enzymes, or other steroid-signaling pathways, these drugs can pose significant side effects in some women. Efforts to discover novel nonsteroidal PR agonists with improved biological properties led to the discovery of tanaproget (TNPR). TNPR binds to the PR from various species with a higher relative affinity than reference steroidal progestins. In T47D cells, TNPR induces alkaline phosphatase activity with an EC(50) value of 0.1 nm, comparable with potent steroidal progestins such as medroxyprogesterone acetate (MPA) and trimegestone (TMG), albeit with a reduced efficacy ( approximately 60%). In a mammalian two-hybrid assay to measure PR agonist-induced interaction between steroid receptor co-activator-1 and PR, TNPR showed similar potency (EC(50) value of 0.02 nm) and efficacy to MPA and TMG. Importantly, in key animal models such as the rat ovulation inhibition assay, TNPR demonstrates full efficacy and an enhanced progestational potency (30-fold) when compared with MPA and TMG. Furthermore, TNPR has relatively weak interactions with other steroid receptors and binding proteins and little effect on cytochrome P450 metabolic pathways. Finally, the three-dimensional crystal structure of the PR ligand binding domain with TNPR has been delineated to demonstrate how this nonsteroidal ligand achieves its high binding affinity. Therefore, TNPR is a structurally novel and very selective PR agonist with an improved preclinical pharmacological profile.
Molecular and pharmacological properties of a potent and selective novel nonsteroidal progesterone receptor agonist tanaproget.,Zhang Z, Olland AM, Zhu Y, Cohen J, Berrodin T, Chippari S, Appavu C, Li S, Wilhem J, Chopra R, Fensome A, Zhang P, Wrobel J, Unwalla RJ, Lyttle CR, Winneker RC J Biol Chem. 2005 Aug 5;280(31):28468-75. Epub 2005 Jun 3. PMID:15937332[15]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Pierson-Mullany LK, Lange CA. Phosphorylation of progesterone receptor serine 400 mediates ligand-independent transcriptional activity in response to activation of cyclin-dependent protein kinase 2. Mol Cell Biol. 2004 Dec;24(24):10542-57. PMID:15572662 doi:10.1128/MCB.24.24.10542-10557.2004
- ↑ Narayanan R, Edwards DP, Weigel NL. Human progesterone receptor displays cell cycle-dependent changes in transcriptional activity. Mol Cell Biol. 2005 Apr;25(8):2885-98. PMID:15798179 doi:25/8/2885
- ↑ Man JH, Li HY, Zhang PJ, Zhou T, He K, Pan X, Liang B, Li AL, Zhao J, Gong WL, Jin BF, Xia Q, Yu M, Shen BF, Zhang XM. PIAS3 induction of PRB sumoylation represses PRB transactivation by destabilizing its retention in the nucleus. Nucleic Acids Res. 2006;34(19):5552-66. Epub 2006 Oct 4. PMID:17020914 doi:gkl691
- ↑ Zhang PJ, Zhao J, Li HY, Man JH, He K, Zhou T, Pan X, Li AL, Gong WL, Jin BF, Xia Q, Yu M, Shen BF, Zhang XM. CUE domain containing 2 regulates degradation of progesterone receptor by ubiquitin-proteasome. EMBO J. 2007 Apr 4;26(7):1831-42. Epub 2007 Mar 8. PMID:17347654 doi:7601602
- ↑ Daniel AR, Faivre EJ, Lange CA. Phosphorylation-dependent antagonism of sumoylation derepresses progesterone receptor action in breast cancer cells. Mol Endocrinol. 2007 Dec;21(12):2890-906. Epub 2007 Aug 23. PMID:17717077 doi:me.2007-0248
- ↑ Daniel AR, Qiu M, Faivre EJ, Ostrander JH, Skildum A, Lange CA. Linkage of progestin and epidermal growth factor signaling: phosphorylation of progesterone receptors mediates transcriptional hypersensitivity and increased ligand-independent breast cancer cell growth. Steroids. 2007 Feb;72(2):188-201. Epub 2006 Dec 14. PMID:17173941 doi:S0039-128X(06)00225-X
- ↑ Faivre EJ, Daniel AR, Hillard CJ, Lange CA. Progesterone receptor rapid signaling mediates serine 345 phosphorylation and tethering to specificity protein 1 transcription factors. Mol Endocrinol. 2008 Apr;22(4):823-37. Epub 2008 Jan 17. PMID:18202149 doi:me.2007-0437
- ↑ Pierson-Mullany LK, Lange CA. Phosphorylation of progesterone receptor serine 400 mediates ligand-independent transcriptional activity in response to activation of cyclin-dependent protein kinase 2. Mol Cell Biol. 2004 Dec;24(24):10542-57. PMID:15572662 doi:10.1128/MCB.24.24.10542-10557.2004
- ↑ Narayanan R, Edwards DP, Weigel NL. Human progesterone receptor displays cell cycle-dependent changes in transcriptional activity. Mol Cell Biol. 2005 Apr;25(8):2885-98. PMID:15798179 doi:25/8/2885
- ↑ Man JH, Li HY, Zhang PJ, Zhou T, He K, Pan X, Liang B, Li AL, Zhao J, Gong WL, Jin BF, Xia Q, Yu M, Shen BF, Zhang XM. PIAS3 induction of PRB sumoylation represses PRB transactivation by destabilizing its retention in the nucleus. Nucleic Acids Res. 2006;34(19):5552-66. Epub 2006 Oct 4. PMID:17020914 doi:gkl691
- ↑ Zhang PJ, Zhao J, Li HY, Man JH, He K, Zhou T, Pan X, Li AL, Gong WL, Jin BF, Xia Q, Yu M, Shen BF, Zhang XM. CUE domain containing 2 regulates degradation of progesterone receptor by ubiquitin-proteasome. EMBO J. 2007 Apr 4;26(7):1831-42. Epub 2007 Mar 8. PMID:17347654 doi:7601602
- ↑ Daniel AR, Faivre EJ, Lange CA. Phosphorylation-dependent antagonism of sumoylation derepresses progesterone receptor action in breast cancer cells. Mol Endocrinol. 2007 Dec;21(12):2890-906. Epub 2007 Aug 23. PMID:17717077 doi:me.2007-0248
- ↑ Daniel AR, Qiu M, Faivre EJ, Ostrander JH, Skildum A, Lange CA. Linkage of progestin and epidermal growth factor signaling: phosphorylation of progesterone receptors mediates transcriptional hypersensitivity and increased ligand-independent breast cancer cell growth. Steroids. 2007 Feb;72(2):188-201. Epub 2006 Dec 14. PMID:17173941 doi:S0039-128X(06)00225-X
- ↑ Faivre EJ, Daniel AR, Hillard CJ, Lange CA. Progesterone receptor rapid signaling mediates serine 345 phosphorylation and tethering to specificity protein 1 transcription factors. Mol Endocrinol. 2008 Apr;22(4):823-37. Epub 2008 Jan 17. PMID:18202149 doi:me.2007-0437
- ↑ Zhang Z, Olland AM, Zhu Y, Cohen J, Berrodin T, Chippari S, Appavu C, Li S, Wilhem J, Chopra R, Fensome A, Zhang P, Wrobel J, Unwalla RJ, Lyttle CR, Winneker RC. Molecular and pharmacological properties of a potent and selective novel nonsteroidal progesterone receptor agonist tanaproget. J Biol Chem. 2005 Aug 5;280(31):28468-75. Epub 2005 Jun 3. PMID:15937332 doi:http://dx.doi.org/10.1074/jbc.M504144200
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