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Homoharringtonine (HHT)

Name: Homoharringtonine (HHT)
Brand: Selleck Chemicals
SKU: S9015
Rating: 5 (18 reviews)

Synonyms: CGX-635, Myelostat, NSC 141633

Catalog No.S9015 Purity:99.85%

Homoharringtonine (HHT), a plant alkaloid with antitumor properties, inhibits protein translation by preventing the initial elongation step of protein synthesis via an interaction with the ribosomal A-site. Homoharringtonine reversiblely inhibits IL-6-induced STAT3 Tyrosine 705 phosphorylation and reduced anti-apoptotic proteins expression.

Homoharringtonine (HHT) Chemical Structure

CAS No. 26833-87-4

Purity & Quality Control

Batch: Purity: 99.85%

99.85

Homoharringtonine (HHT) Related Products

Related Targets	STAT1 STAT3 STAT5 STAT6	Click to Expand
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Related Compound Libraries	Kinase Inhibitor Library FDA-approved Drug Library Natural Product Library Tyrosine Kinase Inhibitor Library JAK/STAT compound library	Click to Expand

Signaling Pathway

STAT Signaling Pathway

Biological Activity

Description	Homoharringtonine (HHT), a plant alkaloid with antitumor properties, inhibits protein translation by preventing the initial elongation step of protein synthesis via an interaction with the ribosomal A-site. Homoharringtonine reversiblely inhibits IL-6-induced STAT3 Tyrosine 705 phosphorylation and reduced anti-apoptotic proteins expression.

In vitro
In vitro	Homoharringtonine (HHT), a plant alkaloid with antitumor properties, induces p62-mediated autophagy in resistant CML K562G cells, thus promoting autophagic degradation of the BCR-ABL protein.^[1]
Cell Research	Cell lines	K562 cells, K562G cells
	Concentrations	100, 50, 25, 12.5, 6.2, 3.1, 1.56, 0.78 and 0.39 ng/ml
	Incubation Time	48 h
	Method	K562, K562G, and siRNA-K562G cells are seeded in 384-well plates at a density of 8,000 cells/well, and then treated with 0.1% DMSO (vehicle control) or HHT at concentrations of 100, 50, 25, 12.5, 6.2, 3.1, 1.56, 0.78 and 0.39 ng/ml for 48 h. According to the manufacturer's instructions, cell proliferation is assayed using an MTS assay, and the absorbance is measured.

In Vivo
In vivo	Homoharringtonine (HHT) in combination with ABT-199, significantly prolongs overall survival of primary diffuse large B-cell lymphoma (DLBCL) xenograft-bearing mice compared with single-agent approaches.^[2]
Animal Research	Animal Models	Cg-Prkdc^scid Il2rg^tm1Wjl/SzJ mice of xenograft models of DLBCL
	Dosages	50 µg/dose
	Administration	i.p.

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
Clinical Trial Information (data from https://clinicaltrials.gov, updated on 2024-05-22)
NCT06259292	Recruiting	Hereditary Hemorrhagic Telangiectasia\|Arteriovenous Malformations\|Telangiectasia\|Epistaxis\|GastroIntestinal Bleeding\|Cerebral Arteriovenous Malformations\|Vascular Malformation	Cure HHT\|Augusta University\|The Cleveland Clinic\|Mayo Clinic\|Massachusetts General Hospital\|Columbia University\|Oregon Health and Science University\|University of California Los Angeles\|University of California San Francisco\|University of Colorado Denver\|University of North Carolina Chapel Hill\|University of Pennsylvania\|University of Texas\|University of Utah\|Washington University School of Medicine\|Yale University\|Health Resources and Services Administration (HRSA)\|Children''s Hospital of Philadelphia	November 13 2023	--
NCT05954481	Recruiting	Hereditary Hemorrhagic Telangiectasia\|Rendu Osler Disease	Hospices Civils de Lyon	August 3 2023	Not Applicable
NCT03850964	Recruiting	Hereditary Hemorrhagic Telangiectasia\|Epistaxis\|Anemia\|Nosebleed\|HHT	Cure HHT	May 8 2023	Phase 2\|Phase 3
NCT04976036	Recruiting	Telangiectasia Hereditary Hemorrhagic	Dr. Romain Lazor\|Boehringer Ingelheim\|Centre Hospitalier Universitaire Vaudois	May 5 2022	Phase 2
NCT06266624	Active not recruiting	HHT	University Hospital Essen	September 25 2020	Not Applicable
NCT03910244	Completed	Telangiectasia Hereditary Hemorrhagic	The Cleveland Clinic\|RTI International	October 17 2019	Phase 2

References

Chemical Information & Solubility

Molecular Weight	545.62	Formula	C₂₉H₃₉NO₉
CAS No.	26833-87-4	SDF	--
Smiles	CC(C)(CCCC(CC(=O)OC)(C(=O)OC1C2C3=CC4=C(C=C3CCN5C2(CCC5)C=C1OC)OCO4)O)O
Storage (From the date of receipt)	3 years -20°C powder	Storage of Stock Solutions Aliquot the stock solutions to avoid repeated freeze-thaw cycles	1 year-80°Cin solvent
Storage (From the date of receipt)	3 years -20°C powder		1 month-20°Cin solvent

In vitro
Batch:

DMSO : 100 mg/mL ( (183.27 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble

Molecular Weight Calculator

In vivo
Batch:

Add solvents to the product individually and in order.

In vivo Formulation Calculator

Preparing Stock Solutions

Molarity Calculator

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Dilution Calculator Molecular Weight Calculator

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

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
as vortex, ultrasound or hot water bath can be used to aid dissolving.

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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