2. GPCR/G Protein Neuronal Signaling
  3. Opioid Receptor
  4. KNT-127

KNT-127 is a selective and BBB-penetrantδ-opioid receptor (DOR) agonist (Ki = 0.16 nM). KNT-127 is highly selective to the δ receptor, with Ki values of 0.16, 21.3 and 153 nM for δ, μ and κ receptors, respectively. KNT-127 acts as a biased ligand that mainly activates cyclic adenosine monophosphate (cAMP) signaling with lower beta-arrestin signaling activation. KNT-127 increases the release of dopamine and L-glutamate in the striatum, nucleus accumbens, and prefrontal cortex. KNT-127 exhibits antidepressant- and anxiolytic-like effects. KNT-127 can be studied in research on neurological diseases.

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KNT-127 Chemical Structure

KNT-127 Chemical Structure

CAS No. : 1256921-89-7

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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Based on 1 publication(s) in Google Scholar

KNT-127 Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE KNT-127

View All Opioid Receptor Isoform Specific Products:

View All Isoforms
μ Opioid Receptor/MOR κ Opioid Receptor/KOR δ Opioid Receptor/DOR NOP Receptor/ORL1

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

KNT-127 is a selective and BBB-penetrantδ-opioid receptor (DOR) agonist (Ki = 0.16 nM). KNT-127 is highly selective to the δ receptor, with Ki values of 0.16, 21.3 and 153 nM for δ, μ and κ receptors, respectively. KNT-127 acts as a biased ligand that mainly activates cyclic adenosine monophosphate (cAMP) signaling with lower beta-arrestin signaling activation. KNT-127 increases the release of dopamine and L-glutamate in the striatum, nucleus accumbens, and prefrontal cortex. KNT-127 exhibits antidepressant- and anxiolytic-like effects. KNT-127 can be studied in research on neurological diseases[1][2][3][4][5].

IC50 & Target[4]

δ Opioid Receptor/DOR

 

mTORC1

 

In Vivo

KNT-127 (10 mg/kg, s.c., single dose) exerts antidepressant-like effect and activates the mTOR signaling pathway in mPFC and amygdala in naïve mice with depression-like helplessness behavior[1].
KNT-127 (0.4 nmol, local infusion, single dose 15 min before test) significantly reduces immobility when infused into infralimbic prefrontal cortex (IL-PFC) but not prelimbic prefrontal cortexin cannula-implanted mice model[1].
KNT-127 (0.4 nmol, s.c., single dose 30 min before test) increases social interaction time with the target mouse and increases sucrose consumption in male and female cVSDS mice model, where both can be blocked by i.c.v. Rapamycin (HY-10219)[1].
KNT-127 (1-10 mg/kg/day, s.c., 14 d) does not influence hippocampal neurogenesis under normal states in naïve mice, unlike conventional antidepressents[2].
KNT-127 (3 mg/kg/day, s.c., 28 d) exerts antidepressant-like effects without affecting immature neurons of 10-day stress exposed cVSDS mice[2].
KNT-127 (3 mg/kg/day, s.c., 30 min before each stress session) suppresses the emergence of depressive-like symptoms and decreases newborn neuron survival rate in cVSDS mice[2].
KNT-127 (5 mg/kg/day, s.c., single dose) significantly reduces the cortical spreading depression (CSD) events and inhibits chronic migraine-associated allodynia in C57BL6/J mice[3].
KNT-127 (0.1-1 mg/kg, i.p., single dose) dose dependently increases striatal, accumbal, and pre-frontal releases of dopamine in male Sprague-Dawley rats[5].

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

Animal Model: Naïve mice with depression-like helplessness behavior[1]
Dosage: 10 mg/kg
Administration: Subcutaneous injection (s.c.), single dose
Result: Decreased the immobility count.
Did not alter the locomotor activity of mice over 40 min post-injection.
Was reversed by prior i.c.v. injection of the DOP inhibitor Naltrindole (10 nmol/5 μL).
Indicated that KNT-127 exerts an antidepressant-like action through DOP stimulation.
Animal Model: Naïve mice with depression-like helplessness behavior and mTOR inhibitor Rapamycin[1]
Dosage: 10 mg/kg
Administration: Subcutaneous injection (s.c.), single dose, 30 min after i.c.v. of Rapamycin (HY-10219) (0.2 nmol)
Result: Increased phosphorylation of Akt (a protein upstream of mTOR complex 1-mTORC1), in the mPFC but not in the amygdala.
Increased phosphorylation of ERK in the amygdala but not in the mPFC.
Increased the phosphorylation of p70S6K, a protein kinase downstream of mTORC1, in both mPFC and amygdala, and both responses were inhibited by i.c.v. Rapamycin.
Activated glutamatergic system in the IL-PFC via the mTOR signaling pathway and GABAA receptors, whilst suppresses GABAergic synapse currents in the IL-PFC.
Suppressed GABAergic synapse currents in the IL-PFC.
Animal Model: Male Sprague-Dawley rats (250-300 g)[5]
Dosage: 1 mg/kg
Administration: Intraperitoneal injection (i.p.), single dose
Result: Was inhibited by 1 nM BNTX (HY-169867) pre-perfusion on its induction of striatal and accumbal releases of dopamine.
Was inhibited by 50 μM MK801 (HY-15084B) pre-perfusion on its induction of striatal and accumbal releases of dopamine.
Enhanced pre-frontal dopamine release with the pre-perfusion of Muscimol (50 μM). Was inhibited by 25 μM Sulpiride (HY-B1019) pre-perfusion on its reduction of accumbal releases of GABA.
Molecular Weight

372.46

Formula

C24H24N2O2
CAS No.
Appearance

Solid

Color

Off-white to light yellow

SMILES

O[C@@]12[C@]3(CC4=NC5=CC=CC=C5C=C4C2)C6=CC(O)=CC=C6C[C@H]1N(CC3)C
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 25 mg/mL (67.12 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6849 mL 13.4243 mL 26.8485 mL
5 mM 0.5370 mL 2.6849 mL 5.3697 mL
View the Complete Stock Solution Preparation Table

* 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration
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Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

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Volume (start)

V1

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Concentration (final)

C2

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Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 1.25 mg/mL (3.36 mM); Clear solution

    This protocol yields a clear solution of ≥ 1.25 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (12.5 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
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Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.60%

SDS (251 KB)

COA (255 KB) LCMS (95 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* 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. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.6849 mL 13.4243 mL 26.8485 mL 67.1213 mL
5 mM 0.5370 mL 2.6849 mL 5.3697 mL 13.4243 mL
10 mM 0.2685 mL 1.3424 mL 2.6849 mL 6.7121 mL
15 mM 0.1790 mL 0.8950 mL 1.7899 mL 4.4748 mL
20 mM 0.1342 mL 0.6712 mL 1.3424 mL 3.3561 mL
25 mM 0.1074 mL 0.5370 mL 1.0739 mL 2.6849 mL
30 mM 0.0895 mL 0.4475 mL 0.8950 mL 2.2374 mL
40 mM 0.0671 mL 0.3356 mL 0.6712 mL 1.6780 mL
50 mM 0.0537 mL 0.2685 mL 0.5370 mL 1.3424 mL
60 mM 0.0447 mL 0.2237 mL 0.4475 mL 1.1187 mL
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  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

KNT-1271256921-89-7KNT127KNT 127Opioid ReceptorBBB-penetrantmTORcAMPdopamineL-glutamateInhibitorinhibitorinhibit

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