1. Vitamin D Related/Nuclear Receptor Apoptosis
  2. Thyroid Hormone Receptor Apoptosis
  3. Taltirelin

Taltirelin (TA-0910) is an orally effective analogue of thyrotropin releasing hormone (TRH) and a TRH receptor (TRH-R) superagonist (IC50 at 910 nM). Taltirelin can cross the blood-brain barrier. Taltirelin stimulates an increase in cytosolic Ca2+ concentration (Ca2+ release) with an EC50 value of 36 nM. Taltirelin increases cell viability and reduces apoptosis in SH-SY5Y cells and primary rat mesencephalic neurons treated with MPP+ (HY-W008719) or Rotenone (HY-B1756). Taltirelin has neuroprotective effects in both cellular and animal models of Parkinson's disease. Taltirelin alleviates fatigue-like behavior in mouse models of cancer-related fatigue.

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Taltirelin Chemical Structure

Taltirelin Chemical Structure

CAS No. : 103300-74-9

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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Solution
10 mM * 1 mL in DMSO In-stock
Solid
5 mg In-stock
10 mg In-stock
50 mg In-stock
100 mg In-stock
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Based on 1 publication(s) in Google Scholar

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Description

Taltirelin (TA-0910) is an orally effective analogue of thyrotropin releasing hormone (TRH) and a TRH receptor (TRH-R) superagonist (IC50 at 910 nM). Taltirelin can cross the blood-brain barrier. Taltirelin stimulates an increase in cytosolic Ca2+ concentration (Ca2+ release) with an EC50 value of 36 nM. Taltirelin increases cell viability and reduces apoptosis in SH-SY5Y cells and primary rat mesencephalic neurons treated with MPP+ (HY-W008719) or Rotenone (HY-B1756). Taltirelin has neuroprotective effects in both cellular and animal models of Parkinson's disease. Taltirelin alleviates fatigue-like behavior in mouse models of cancer-related fatigue[1][2][3].

IC50 & Target

IC50: 910 nM (Thyrotropin-releasing hormone receptor)[1]

In Vitro

Taltirelin (5 μM; 2 h) improves cell viability, reducess ROS production and apoptosis in MPP+ (HY-W008719) or Rotenone (HY-B1756) treated SH-SY5Y cells and primary rat midbrain neurons[2].
Taltirelin (5 μM; 2 h) exerts neuroprotective effects by inhibiting tau phosphorylation and AEP activation in SH-SY5Y cells treated with MPP+ (HY-W008719) or rotenone (HY-B1756)[2].

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

Cell Viability Assay[2]

Cell Line: SH-SY5Y neuroblastoma cells and primary neonatal rat midbrain neurons
Concentration: 5 μM
Incubation Time: 2 h
Result: Increased cell viability.

Western Blot Analysis[2]

Cell Line: SH-SY5Y neuroblastoma cells
Concentration: 5 μM
Incubation Time: 2 h
Result: Prevented the elevation of the cleaved caspase-3.

Cell Viability Assay[2]

Cell Line: SH-SY5Y neuroblastoma cells and primary neonatal rat midbrain neurons
Concentration: 5 μM
Incubation Time: 2 h
Result: Reduced the levels of p-tau and AEP cleavage products: tau N368 and a-synuclein N103 fragments.
In Vivo

Taltirelin (0.2-5 mg/kg; Intraperitoneal injection; 14-56 days) has a neuroprotective effect in mouse models of MPTP (HY-15608) and chronic rotenone (HY-B1756) -induced PD, and improves locomotor function in mice [2].
Taltirelin (1 mg/kg Intraperitoneal injection; 10 mg/kg Oral administration; 1 day) alleviates the fatigue-like behavior caused by chemotherapy treatment, tumor burden and irradiation in mouse models [3].

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

Animal Model: MPTP (HY-15608) or Rotenone (HY-B1756) treated male C57/BL6 mice aged 8-9 weeks old[2]
Dosage: 0.2 mg/kg, 1 mg/kg, 5 mg/kg 14 days; 0.2 mg/kg, 1 mg/kg 56 days
Administration: Intraperitoneal injection (i.p.)
Result: Improved the locomotor function and preserved dopaminergic neurons in the substantia nigra.
Down-regulated the levels of p-tau (S396), p-α-synuclein (S129) tau N368 and α-synuclein N103 fragments in substantia nigra and striatum.
Animal Model: 5-FU (HY-90006) or radiation treated adult C57BL/6NCr mice aged 7-8 weeks;
Balb/cAnNCr mice aged 9 weeks old with colon 26 carcinoma[3]
Dosage: 1mg/kg;
10mg/kg
Administration: Intraperitoneal injection (i.p.);
Oral administration (p.o.);
Twice a day before the test and once again 30 minutes prior to the test.
Result: Reversed the fatigue-like effect, caused mice to run nearer to the top of the treadmill during the test.
Molecular Weight

405.41

Formula

C17H23N7O5

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(N(CCC1)[C@@H]1C(N)=O)[C@@H](NC([C@@H](NC2=O)CC(N2C)=O)=O)CC3=CN=CN3

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (246.66 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 100 mg/mL (246.66 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.4666 mL 12.3332 mL 24.6664 mL
5 mM 0.4933 mL 2.4666 mL 4.9333 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

* 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.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
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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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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    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (6.17 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

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

    Solubility: ≥ 2.5 mg/mL (6.17 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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:  PBS

    Solubility: 100 mg/mL (246.66 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
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).
Purity & Documentation

Purity: 99.86%

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 2.4666 mL 12.3332 mL 24.6664 mL 61.6660 mL
5 mM 0.4933 mL 2.4666 mL 4.9333 mL 12.3332 mL
10 mM 0.2467 mL 1.2333 mL 2.4666 mL 6.1666 mL
15 mM 0.1644 mL 0.8222 mL 1.6444 mL 4.1111 mL
20 mM 0.1233 mL 0.6167 mL 1.2333 mL 3.0833 mL
25 mM 0.0987 mL 0.4933 mL 0.9867 mL 2.4666 mL
30 mM 0.0822 mL 0.4111 mL 0.8222 mL 2.0555 mL
40 mM 0.0617 mL 0.3083 mL 0.6167 mL 1.5416 mL
50 mM 0.0493 mL 0.2467 mL 0.4933 mL 1.2333 mL
60 mM 0.0411 mL 0.2056 mL 0.4111 mL 1.0278 mL
80 mM 0.0308 mL 0.1542 mL 0.3083 mL 0.7708 mL
100 mM 0.0247 mL 0.1233 mL 0.2467 mL 0.6167 mL

* 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.

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    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.

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