1. Cell Cycle/DNA Damage
  2. Microtubule/Tubulin
  3. Soblidotin

Soblidotin (Synonyms: Auristatin PE; TZT-1027)

Cat. No.: HY-14672 Purity: 99.76%
Handling Instructions

Soblidotin (Auristatin PE) is a novel synthetic Dolastatin 10 derivative and inhibitor of tubulin polymerization.

For research use only. We do not sell to patients.

Soblidotin Chemical Structure

Soblidotin Chemical Structure

CAS No. : 149606-27-9

Size Price Stock Quantity
1 mg USD 168 In-stock
Estimated Time of Arrival: December 31
5 mg USD 420 In-stock
Estimated Time of Arrival: December 31
10 mg USD 600 In-stock
Estimated Time of Arrival: December 31
25 mg USD 1200 In-stock
Estimated Time of Arrival: December 31
50 mg USD 1800 In-stock
Estimated Time of Arrival: December 31
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Customer Review

Based on 1 publication(s) in Google Scholar

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Soblidotin (Auristatin PE) is a novel synthetic Dolastatin 10 derivative and inhibitor of tubulin polymerization.

IC50 & Target


In Vitro

Soblidotin (Auristatin PE) is a novel synthetic dolastatin 10 derivative that inhibits tubulin polymerization. Soblidotin (Auristatin PE) exhibits antitumor activity against p-glycoprotein-overexpressing cell lines established from colon cancer H116 and breast cancer-resistant protein-positive cell lines established from lung cancer PC-6, and is more potent than Vincristine, Paclitaxel, and Docetaxel against these cell lines[1]. Soblidotin (Auristatin PE) is a synthetic analog of dolastatin 10 which inhibits the growth of several tumoral cell lines and induces caspase-3-dependent apoptosis. Soblidotin (Auristatin PE) also shows antitumoral activity in Vincristine-, Docetaxel-, and Paclitaxel-resistant tumors, which makes it a potential chemotherapy drug for use in tumors which do not respond to other microtubule inhibitors[2].

In Vivo

Intravenous injection of Auristatin PE (TZT-1027) has been shown to potently inhibit the growth of P388 leukemic cells and several solid tumors in mice, and to prolong the survival of the animals, and its antitumor efficacy has been shown to be superior or comparable to that of the reference agents Dolastatin 10, Cisplatin, Vincristine, and 5-Fluorouracil. Furthermore, in xenograft models, Auristatin PE reduces intratumoral blood perfusion 1 to >24 h after its administration, thereby producing hemorrhagic necrosis of the tumors[1]. Auristatin PE (Soblidotin) shows antivascular effects in tumoral models overexpressing VEGF and in murine colon tumors, with an increase in vascular permeability, vessel closure, and widespread hemorrhage[2]. Mice bearing subcutaneous HT-29 tumors (200 mm3) are dosed every 7 days with Auristatin PE (0.5 or 1.0 mg/kg) for a total of four cycles. Under such conditions, Auristatin PE (TZT-1027) inhibits the growth of HT-29 xenografts in a dose-dependent manner. Coadministration of Auristatin PE does not interfere with the PD184352-induced suppression of ERK1/2 phosphorylation. Immunostaining for Ki-67 as a marker for proliferating cells confirmed that the number of such cells in tumor sections is decreased greatly at 24 hours after the initial dosing with PD184352 compared with that apparent for vehicle-treated tumors. Auristatin PE treatment alone increases the number of TUNEL-positive cells in HT-29 xenografts by 24 hours in a dose-dependent manner, and this effect is enhanced by coadministration of PD184352[3].

Clinical Trial
Molecular Weight







O=C(N[[email protected]@H](C(C)C)C(N([[email protected]@H]([[email protected]](CC)C)[[email protected]](OC)CC(N1CCC[[email protected]@]1([H])[[email protected]](OC)[[email protected]@H](C)C(NCCC2=CC=CC=C2)=O)=O)C)=O)[[email protected]](C(C)C)N(C)C


Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (142.45 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (insoluble)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.4245 mL 7.1227 mL 14.2454 mL
5 mM 0.2849 mL 1.4245 mL 2.8491 mL
10 mM 0.1425 mL 0.7123 mL 1.4245 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

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

    Solubility: ≥ 2.5 mg/mL (3.56 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (3.56 mM); Clear solution

*All of the co-solvents are provided by MCE.
Animal Administration

Soblidotin (Auristatin PE) and Vinorelbine are dissolved in 0.05 M sodium lactate buffer (pH 4.5) and in PBS, respectively. Mice are treated every 7 d with PD184352 (200 mg/kg) or vehicle by oral administration (four times per day, every 6 h) and with Auristatin PE (0.25-2.5 mg/kg), Vinorelbine (5-20 mg/kg), or vehicle by i.v. injection (once per day, 1 h after the first PD184352 administration). Tumor volume is measured with digital calipers and calculated according to the following formula: (longest diameter)×(shortest diameter)2/2. Body weight, tumor volume, and toxicities are noted every 2 to 4 d for the duration of the experiment.

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

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SoblidotinAuristatin PETZT-1027TZT1027TZT 1027Microtubule/TubulinInhibitorinhibitorinhibit

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