HG-9-91-01

Catalog No.S8393 Batch:S839301

Technical Data

Formula

C₃₂H₃₇N₇O₃

Molecular Weight

567.68

CAS No.

1456858-58-4

Solubility (25°C)*

In vitro

DMSO

100 mg/mL (176.15 mM)

Water

Insoluble

Ethanol

Insoluble

In vivo (Add solvents to the product individually and in order)

	5% DMSO 1 95% Corn oil	0.625mg/ml
	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O	5.0mg/ml

* <1 mg/ml means slightly soluble or 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description

HG-9-91-01 (SIK inhibitor 1) is a potent and highly selective inhibitor of salt-inducible kinase (SIK) with IC50 of 0.92 nM, 6.6 nM and 9.6 nM for SIK1, SIK2 and SIK3, respectively.

Targets

SIK1 ^[1] (Cell-free assay)	SIK2 ^[1] (Cell-free assay)	SIK3 ^[1] (Cell-free assay)
0.92 nM	6.6 nM	9.6 nM

In vitro

HG-9-91-01 is a potent and selective inhibitor of SIK. HG-9-91-01 not only targets the ATP-binding site, but also a small hydrophobic pocket adjacent to this site that is created by the presence of a small amino acid residue at this gatekeeper site. HG-9-91-01 inhibits a number of protein tyrosine kinases that possess a threonine residue at the gatekeeper site, such as Src family members (Src, Lck, and Yes), BTK, and the FGF and Ephrin receptors. HG-9-91-01 potently inhibits the SIKs and, crucially, does not inhibit any other member of the AMPK-related kinase subfamily, which all possess a large hydrophobic residue (Met or Leu) at the gatekeeper site. HG-9-91-01 increases LPS-stimulated IL-10 production and greatly suppressed proinflammatory cytokine secretion, even when cells are costimulated with IFNγ to generate fully polarized classically activated (M1) macrophages.^[1]

In vivo

HG-9-91-01 is > 99% serum bound and rapidly degraded by mouse liver microsomes (t1/2 = 11 min) making this compound unsuitable for direct injection into animals.^[2]

Protocol (from reference)

Cell Assay:^{^[1]}	Cell lines Macrophages Concentrations 500 nM Incubation Time 1 h Method Macrophages are treated for 1 h with 500 nM HG-9-91-01 or an equivalent volume of DMSO for control incubations then stimulated for up to 24 h with 1 μg/mL Pam3CSK4, 2 μg/mL lipoteichoic acid (LTA), 100 ng/mL LPS, 1 μg/mL R837, or 2 μM CpG. Proteins are extracted and immunoblotted by using the indicated antibodies. RNA is extracted by using the RNeasy Micro Kit. cDNA is generated by using the iScript cDNA synthesis kit and quantified by qPCR using the SsoFast EvaGreen Supermix. The relative expression of each gene is calculated from Ct values by using the Pfaffl method and is normalized against the mRNA levels of 18S or GAPDH RNA. Fold induction for each gene is reported relative to untreated control cells, which is set to 1. The concentrations of TNFα, IL-6, IL-10, IL-12p40, and RANTES in culture supernatants were measured by using the Bio-Plex Pro Assay system from Bio-Rad.
Animal Study:^{^[2]}	Animal Models male 8-10 week-old C57BL/6 mice Dosages -- Administration IP

Cell Assay:^{^[1]}

Cell lines
Macrophages
Concentrations
500 nM
Incubation Time
1 h
Method
Macrophages are treated for 1 h with 500 nM HG-9-91-01 or an equivalent volume of DMSO for control incubations then stimulated for up to 24 h with 1 μg/mL Pam3CSK4, 2 μg/mL lipoteichoic acid (LTA), 100 ng/mL LPS, 1 μg/mL R837, or 2 μM CpG. Proteins are extracted and immunoblotted by using the indicated antibodies. RNA is extracted by using the RNeasy Micro Kit. cDNA is generated by using the iScript cDNA synthesis kit and quantified by qPCR using the SsoFast EvaGreen Supermix. The relative expression of each gene is calculated from Ct values by using the Pfaffl method and is normalized against the mRNA levels of 18S or GAPDH RNA. Fold induction for each gene is reported relative to untreated control cells, which is set to 1. The concentrations of TNFα, IL-6, IL-10, IL-12p40, and RANTES in culture supernatants were measured by using the Bio-Plex Pro Assay system from Bio-Rad.

Animal Study:^{^[2]}

Animal Models
male 8-10 week-old C57BL/6 mice
Dosages
--
Administration
IP

References

Selleck's HG-9-91-01 has been cited by 2 publications

Dynamic chromatin architecture identifies new autoimmune-associated enhancers for IL2 and novel genes regulating CD4+ T cell activation [ bioRxiv, 2023, 10.1101/2023.04.05.535731]	PubMed: none
Salt-inducible kinase inhibition sensitizes human acute myeloid leukemia cells to all-trans retinoic acid-induced differentiation [ Int J Hematol, 2020, 10.1007/s12185-020-03026-1]	PubMed: 33074481

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