NK1 receptor

In CHO cells transfected with the human tachykinin NK1 receptor, L-733060 (30-300 nM) suppresses in a concentration-dependent manner the [Ca2+]i mobilization elicited by substance P (100 nM) [1]. L-733060 (2.5–20 μM; 48–96 hours) cytotoxically affects COLO 858 cells in a concentration-dependent manner [2]. With an IC50 of 27.5 μM and 18.9 μM at 24 and 48 hours, respectively, L-733060 (10-30 μM; 24 and 48 hours) suppresses the proliferation of MEL H0 cells [2]. With an IC50 of 33.8 μM and 31.5 μM at 30 h and 72 h, respectively, L-733060 (20-50 μM; and/or 72 h) suppresses the proliferation of COLO 679 cells [2].

Rat dura mater electrically driven plasma extravasation is inhibited by L-733060 (10-1000 μg/kg; iv) [1]. L-733060 (300-3000 μg/kg; iv) In rats, both awake and under anesthesia, no noteworthy hypotensive or bradycardic effects were noted at dosages <3000 μg/kg [1].

This study investigated the properties of a novel piperidine ether-based tachykinin NK1 receptor antagonist L-733,060, ((2S,3S)-3-((3,5-bis(trifluoromethyl)phenyl)methyloxy)-2-phenyl piperidine and its 2R,3R-enantiomer L-733,061 on [Ca2+]i mobilisation in Chinese hamster ovary cells transfected with human tachykinin NK1 receptors, compared to their effects in rodent cardiovascular and neurogenic plasma extravasation assays. Using FURA-2-imaging techniques, L-733,060 inhibited substance P-induced [Ca2+]i mobilisation with an estimated affinity of 0.8 nM whereas L-733,061 (30-300 nM) did not. No significant effects of L-733,060 were observed on mean arterial blood pressure or heart rate in conscious or anaesthetised rats at doses of < 3000 micrograms kg-1 i.v. L-733,060 also stereoselectively inhibited neurogenic plasma extravasation in rat dura produced by electrical stimulation of trigeminal nerves with an ID50 of 212 +/- 19 micrograms kg-1 i.v. Thus, L-733,060 is a novel antagonist of human tachykinin NK1 receptors which stereoselectively inhibits neurogenic plasma extravasation at doses that do not cause adverse cardiovascular effects[1].

Cell proliferation assay [2]
Cell Types: COLO 858 Cell
Tested Concentrations: 2.5, 5, 10, 20 μM
Incubation Duration: 0, 48, 96 h
Experimental Results: Inhibited cell growth, IC50 at 48 h and 96 h were 8.7 μM and 96 h, respectively 7.1 μM, respectively.

Animal/Disease Models: Male SD (SD (Sprague-Dawley)) rat (200 g), electrical stimulation of the trigeminal ganglion [1]
Doses: 10, 100, 1000 mg/kg
Route of Administration: intravenous (iv) (iv)injection
Experimental Results: Significant dose-related effects on plasma extravasation The inhibitory effect ID50 is 212±19 μg/kg.

[1]. L-733,060, a novel tachykinin NK1 receptor antagonist; effects in [Ca2+]i mobilisation, cardiovascular and dural extravasation assays. Eur J Pharmacol. 1996 Dec 12; 317(1):129-35.

[2]. Antitumoral action of the neurokinin-1 receptor antagonist L-733 060 on human melanoma cell lines. Melanoma Res. 2004 Jun;14(3):183-8.

Melanoma accounts for 1% of all cancers and approximately 65% of skin cancer deaths. Currently, there is no effective treatment. Substance P (SP) is a neuropeptide expressed in aggressive malignant melanomas. We investigated the in vitro growth inhibitory effects of the potent and long-acting neurokinin-1 (NK1) receptor antagonist L-733 060 on melanoma cell lines COLO 858, MEL H0, and COLO 679 at concentrations of 2.5–20 μM, 10–30 μM, and 20–50 μM. Viable cell counts were determined using a Coulter counter, and cell proliferation was assessed using the MTS colorimetric assay for the tetrazolium compound 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazole inner salt. L-733 060 inhibited the growth of all three cell lines in a dose-dependent manner. The half-maximal inhibitory concentration (IC50) of COLO 858 cells was 8.7 μM at 48 hours and 7.1 μM at 96 hours; the half-maximal inhibitory concentration of MEL H0 cells was 27.5 μM at 24 hours and 18.9 μM at 48 hours; and the half-maximal inhibitory concentration of COLO 679 cells was 33.8 μM at 30 hours and 31.5 μM at 72 hours. These results indicate that the NK1 receptor antagonist L-733 060 has antitumor activity. This effect is reported for the first time, suggesting that the NK1 receptor antagonist L-733 060 may be a promising drug for the treatment of human melanoma. [2] The antitumor activity of L-733 060 reported in this article is dose-dependent. We observed that COLO 858 cells reached maximum cytotoxicity at a concentration of 20 μM, MEL-HO cells at 30 μM, and COLO 679 cells at 50 μM. These differences may be related to the number of NK1 receptors expressed in each cell line. In addition, they may be related to the tumor progression stage of each tumor cell line, as shown by the invasiveness of the tumor (COLO 679 cell line was derived from soft tissue metastases of malignant melanoma, MEL-HO cell line was derived from primary tumor cells expressing the oncogene c-myc mRNA, and COLO 858 cell line was derived from lymph nodes). [2] The above data suggest that treatment with NK1 receptor antagonists may have anticancer effects in cancer cell lines expressing SP. Further research is needed to understand the mechanism by which tachykinin receptor antagonists inhibit the growth of cancer cell lines. It would be very interesting to know whether NK1 receptor inhibitors initially studied in humans (such as vofopitant (GR-205171), CP-122721, ezlopitant (CJ-11974), MK-869 (L-754030) and its prodrug L-758298 [26]) could produce the same growth-inhibiting effect as L-733 060 when treating cancer cell lines. [2]
It is known that the NK1 antagonist aprepitant (MK-869), a drug with antidepressant activity that is structurally unrelated to L-733 060, is as effective as the antidepressant paroxetine in treating depression. This NK1 antagonist is well tolerated, and there is no statistically significant difference in the incidence of adverse events compared to placebo. SP and NK1 receptors are present in the limbic system, including the hypothalamus and amygdala. In addition, SP may be involved in integrating emotional responses to stress, suggesting that the pathogenesis of depression may be related to alterations in the SP/NK1 receptor system. [6] Finally, as we demonstrate here, the NK1 receptor antagonist L-733 060 exhibits antitumor activity in human melanoma cell lines. These findings suggest that emotional behavior and cancer may share similar mechanisms associated with alterations in the SP/NK1 receptor system. [2] In summary, this study is the first to describe the in vitro antitumor activity of the NK1 receptor antagonist L-733 060 against human melanoma cell lines. This observation suggests that inhibiting the SP/NK1 receptor system may be a potential new approach for the treatment of melanoma. [2]

C20H20CLF6NO

439.8264

439.114

C, 54.62; H, 4.58; Cl, 8.06; F, 25.92; N, 3.18; O, 3.64

148687-76-7

148687-76-7 (HCl);148700-85-0;

11957600

White to off-white solid powder

6.864

2

8

4

29

466

2

Cl.C1C=CC([C@H]2NCCC[C@H]2OCC2C=C(C(F)(F)F)C=C(C(F)(F)F)C=2)=CC=1

DYEUTIUITGHIEO-APTPAJQOSA-N

InChI=1S/C20H19F6NO.ClH/c21-19(22,23)15-9-13(10-16(11-15)20(24,25)26)12-28-17-7-4-8-27-18(17)14-5-2-1-3-6-14/h1-3,5-6,9-11,17-18,27H,4,7-8,12H21H/t17-,18-/m0./s1

(2S,3S)-3-{[3,5-bis(trifluoromethyl)benzyl]oxy}-2-phenylpiperidine hydrochloride

L-733060; L733060; L 733060; L-733,060; L733,060;L-733060 hydrochloride; (2R,3R)-3-[[3,5-bis(trifluoromethyl)phenyl]methoxy]-2-phenylpiperidine;hydrochloride; MLS002153399; 3-([3,5-BIS(TRIFLUOROMETHYL)PHENYL]METHOXY)-2-PHENYL-PIPERIDINE HYDROCHLORIDE; SMR001230778; SCHEMBL8537737; L 733,060

2934.99.9001

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.

Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

H2O : ~22 mg/mL (~50.02 mM)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

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Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).

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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline)

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Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).

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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders

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Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

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 (Please use freshly prepared in vivo formulations for optimal results.)