Catalog No.S8301

For research use only.

AS101, a potent in vitro and in vivo immunomodulator, is a novel inhibitor of IL-1beta converting enzyme.

AS101 Chemical Structure

CAS No. 106566-58-9

Selleck's AS101 has been cited by 6 Publications

Purity & Quality Control

Choose Selective Interleukins Inhibitors

Biological Activity

Description AS101, a potent in vitro and in vivo immunomodulator, is a novel inhibitor of IL-1beta converting enzyme.
IL-1β converting enzyme [1]
In vitro

Treatment of caspase-1 (interleukin-1 [IL-1] converting enzyme [ICE]) with AS101 inhibits its enzymatic activity in a dose-dependent manner. Moreover, AS101 treatment causes a significant reduction in the active form of IL-18 and IL-1 in peripheral blood mononuclear cells (PBMC) and in human HaCat keratinocytes. The inhibitory effect of AS101 does not involve nitric oxide (NO) or interferon- (IFN- ), two possible regulators of IL-18 production, and does not occur at the mRNA level. It may exert effects through a posttranscriptional mechanism[1]. AS101 induced SIRT1 expression in a dose dependent manner in three different cell lines, HEK293, HL-60 and Rin-5f. Incubation of HEK293 and HL-60 cell lines with AS101 (0.1-2.5μg/ml) resulted in a dose dependent reduction in PPARγ protein expression relative to the control cells, and the reduction of PPARγ expression is in parallel to increased SIRT1 expression[2].

In vivo AS101 downregulates IL-18 and IL-1 serum levels in a mouse model of lipopolysaccharide (LPS)-induced sepsis, resulting in increased survival. It has also been shown to be protective against lethal and sublethal effects of irradiation and chemotherapy. In a model of cecal ligation and puncture (CLP)-induced sepsis in mice, AS101 also exerted beneficial effects[1]. AS101 treated rats showed a large increase in SIRT1 protein levels in the liver and kidney extracts of rats treated with AS101. AS101 prevents development of insulin resistance in vivo. AS101 affects SIRT1 related metabolic pathways by changing the insulin levels. AS101 treatment prevents hyperglycemia associated with T2D(type 2 diabetes) and some of the symptoms of the disease in the HFD(high fat diet)+STZ(Streptozotocin) rat model[2].

Protocol (from reference)

Cell Research:


  • Cell lines: Human peripheral blood mononuclear cells (PBMC)
  • Concentrations: 0.01, 0.05, 0.5, 1, 1.5, 2 μg/mL
  • Incubation Time: 24 h
  • Method:

    In vitro, PBMCs were first treated with various concentrations of AS101, and after 1 h SAC (10-3 v/v) was added. After 24 h, supernatants were collected and evaluated for cytokine content.

  • (Only for Reference)
Animal Research:


  • Animal Models: c57BL/6J and BALB/c mice
  • Dosages: 10 μg/mouse
  • Administration: i.p.
  • (Only for Reference)

Solubility (25°C)

In vitro

DMSO 62 mg/mL
(198.68 mM)
Water Insoluble
Ethanol Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 312.05


CAS No. 106566-58-9
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles C1CO[Te](O1)(Cl)(Cl)Cl.[NH4+]

In vivo Formulation Calculator (Clear solution)

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Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
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Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT01943630 Unknown status Drug: 15% AS101 gel|Drug: Vehicle External Genital Warts BioMAS Ltd January 2015 Phase 2
NCT01010373 Suspended Drug: AS101 Acute Myeloid Leukemia|Myelodysplastic Syndrome BioMAS Ltd January 2015 Phase 2

(data from, updated on 2021-09-06)

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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