TAK-683 acetate 

TAK-683 acetate is a potent full KISS1 receptor (KISS1R) agonist (IC₅₀=170 pM) with improved metabolic stability. TAK-683 acetate is a nonapeptide metastin analog, exhibits agonistic activities to KISS1R with EC₅₀ values of 0.96 nM and 1.6 nM for human and rat, respectively^[1]. TAK-683 acetate depletes GnRH in the hypothalamus and reduces plasma FSH, LH, and testosterone levels in vivo, it has the potential for the study of hormone-dependent prostate cancer^[1][2][4].

TAK-683 acetate exhibits an IC₅₀ value of 150-180 pM and EC₅₀ value of 180 pM in rat KISS1R-expressing Chinese hamster ovary (CHO) cells^[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

TAK-683 acetate (subcutaneous injection; 0.008, 0.08, 0.8, or 8 μmol/ml/kg; once daily; 7 days) induces an increase in plasma luteinizing hormone and testosterone levels; however, after day 7, plasma hormone levels and genital organ weights are reduced^[3].
TAK-683 acetate (subcutaneous injection; 10, 30, or 100 pmol/h; once daily; 4 weeks) provides a promising for suppressing reproductive functions and hormone-related diseases such as prostate cancer^[3].
TAK-683 acetate (subcutaneous injection; 2.1-21 nmol/kg/day; once daily; 12 weeks) has a longer-term evaluation in prostate cancer model, serum concentrations of PSA is reduced in rats, PSA concentrations are reduced to below the limit of detection (0.5 ng/ml)) in all rats by day 14^[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

1358.50

C₆₆H₈₇N₁₇O₁₅

Solid

White to off-white

N-Acetyl-{d-Tyr}-{d-Trp}-Asn-Thr-Phe-{aza}-Leu-{Met}-Arg-Trp-NH2

N-Acetyl--{d-Tyr}-{d-Trp}-NTF-{aza}-L-{Met}-RW-NH2

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisture and light, under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

• [1]. Nishizawa N, et al. Design and Synthesis of an Investigational Nonapeptide KISS1 Receptor (KISS1R) Agonist, Ac-d-Tyr-Hydroxyproline (Hyp)-Asn-Thr-Phe-azaGly-Leu-Arg(Me)-Trp-NH2 (TAK-448), with Highly Potent Testosterone-Suppressive Activity and Excellent Water Solubility. J Med Chem. 2016 Oct 13;59(19):8804-8811. Epub 2016 Sep 21.  [Content Brief]

  [2]. Asami T, et al.Design, synthesis, and biological evaluation of novel investigational nonapeptide KISS1R agonists with testosterone-suppressive activity.J Med Chem. 2013 Nov 14;56(21):8298-307.  [Content Brief]

  [3]. Hisanori MATSUI, et al. Functional Analyses of Kisspeptin in Controlling Gonadal Functions