Name: Abemaciclib (LY2835219)
Brand: Selleck Chemicals
SKU: S5716
Availability: InStock
Rating: 5 (122 reviews)

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Quality Control

Batch: Purity: 99.97%

99.97

Related Targets	HSP PD-1/PD-L1 ROCK Wee1 DNA/RNA Synthesis Microtubule Associated Ras KRas Aurora Kinase Casein Kinase
Other CDK Inhibitors	AS2863619 Ro-3306 SEL120 (SEL120-34A) hydrochloride INX-315 Tagtociclib (PF-07104091) PF-07220060 (CDK4/6-IN-6) AZD4573 ON123300 Enitociclib (BAY 1251152) Samuraciclib (ICEC0942) hydrochloride

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Concentration	Incubation Time	Activity Description	PMID
COLO205 cells	Function assay		24 h	Inhibition of CDK4/6 in human COLO205 cells assessed as inhibition of Rb phosphorylation after 24 hrs by propidium iodide staining-based laser-scanning fluorescence microplate cytometric analysis, IC50=0.12 μM	26115571
SK-ES-1	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
Cado-ES-1	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-7	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
TC-71	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
A673	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
RD-ES	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-1	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-3	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
CHLA-258	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
MHH-ES-1	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-8	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
EW8	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-6	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-2	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
SMS-CTR	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
ES-4	Proliferation assay		96 hours	antiproliferative effects with an absolute EC50 value below 1 μmol/L	30131386
CT26	Cell viability assay		96 hours	IC50=2.7 μM	29539425
insect cells	Function assay		50 mins	Competitive inhibition of human CDK4/cyclin D1 expressed in insect cells assessed as phosphorylation of CTRF after 50 mins by Michaelis-Menten plot analysis in presence of ATP, Ki = 0.0006 μM.	26115571
insect cells	Function assay		50 mins	Inhibition of human CDK4/cyclin D1 expressed in insect cells assessed as phosphorylation of CTRF after 50 mins by microplate scintillation counter, IC50 = 0.002 μM.	26115571
COLO205	Function assay		24 hrs	Inhibition of CDK4/6 in human COLO205 cells assessed as maximum cell cycle arrest at G1 phase after 24 hrs by propidium iodide staining-based flow cytometric analysis, INH = 6.7 μM.	26115571
Sf9	Function assay			Inhibition of CDK1/Cyclin B (unknown origin) expressed in baculoviral infected insect Sf9 cells using histone H1 as substrate in presence of [gamma-33P]ATP, IC50 = 0.371 μM.	26741853
Sf9	Function assay		90 mins	Inhibition of recombinant human N-terminal GST-tagged CDK4 (4 to 303 residues)/cyclin D1 (4 to 295 residues) expressed in sf9 cells using C-terminal retinoblastoma fragment as substrate after 90 mins by [gamma-33P]ATP based microbeta scintillation countin, Ki = 0.002 μM.	27171036
Sf9	Function assay		90 mins	Inhibition of recombinant full length human N-terminal GST-tagged CDK6 (1 to 326 residues)/cyclin D1 (4 to 295 residues) expressed in sf9 cells using C-terminal retinoblastoma fragment as substrate after 90 mins by [gamma-33P]ATP based microbeta scintilla, Ki = 0.01 μM.	27171036
Sf21	Function assay			Inhibition of recombinant human full length C-terminal His6-tagged CDK7/cyclin H/N-terminal GST-tagged MAT1 expressed in baculovirus infected Sf21 insect cells using cdk7 substrate peptide, Ki = 3.91 μM.	27171036
COLO205	Antiproliferative assay		96 hrs	Antiproliferative activity against human COLO205 cells after 96 hrs by CCK-8 assay, IC50 = 0.46 μM.	29074254
U87MG	Antiproliferative assay		72 hrs	Antiproliferative activity against human U87MG cells after 72 hrs by DAPI staining based assay, IC50 = 0.0481 μM.	29247857
Sf9	Function assay			Inhibition of recombinant human N-terminal GST-tagged CDK4 (S4 to E303 residues)/Cyclin D1 (Q4 to I295 residues) expressed in sf9 cells using Rb protein (773 to 928 residues) as substrate in presence of [33P]-ATP by scintillation counting method, IC50 = 0.002 μM.	29429832
Sf9	Function assay		90 mins	Inhibition of recombinant human full length CDK6 expressed in baculovirus infected Sf9 insect cells using histone H1 substrate after 90 mins by ADP-Glo assay, IC50 = 0.0078 μM.	29429832
Sf9	Function assay			Inhibition of recombinant human N-terminal GST-tagged CDK4 (M1 to A326 residues)/Cyclin D1 (Q4 to I295 residues) expressed in sf9 cells using Rb protein (773 to 928 residues) as substrate in presence of [33P]-ATP by scintillation counting method, IC50 = 0.01 μM.	29429832
Sf9	Function assay		90 mins	Inhibition of recombinant human full length CDK1/Cyclin D3 expressed in baculovirus infected Sf9 insect cells using histone H1 substrate after 90 mins by ADP-Glo assay, IC50 = 0.056 μM.	29429832
MDA-MB-231	Antiproliferative assay		72 hrs	Antiproliferative activity against human MDA-MB-231 cells after 72 hrs by DAPI staining based assay, IC50 = 0.191 μM.	29429832
COLO205	Antiproliferative assay		96 hrs	Antiproliferative activity against human COLO205 cells after 96 hrs by CCK8 assay, IC50 = 0.217 μM.	29459274
MDA-MB-468	Antiproliferative assay		96 hrs	Antiproliferative activity against human MDA-MB-468 cells after 96 hrs by CCK8 assay, IC50 = 4.808 μM.	29459274
COLO205	Function assay	0.1 to 10 uM	24 hrs	Inhibition of CDK4 in human COLO205 cells assessed as reduction in total Rb protein level at 0.1 to 10 uM after 24 hrs by immunoblotting method	29459274
COLO205	Cell cycle arrest assay	up to 10 uM	24 hrs	Cell cycle arrest in human COLO205 cells assessed as accumulation at G2/M phase up to 10 uM after 24 hrs by propidium iodide staining based FACS analysis	29459274
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

Ethanol : 8 mg/mL

DMSO : 6 mg/mL (11.84 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.200mg/ml (0.39mM)	Taking the 1 mL working solution as an example, add 50 μL of 4 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

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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.

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Chemical Information, Storage & Stability

Molecular Weight	506.59	Formula	C₂₇H₃₂F₂N₈	Storage (From the date of receipt)	3 years -20°C powder
CAS No.	1231929-97-7	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	LY2835219			Smiles	CCN1CCN(CC1)CC2=CN=C(C=C2)NC3=NC=C(C(=N3)C4=CC5=C(C(=C4)F)N=C(N5C(C)C)C)F

Mechanism of Action

Targets/IC₅₀/Ki	CDK4 (Cell-free assay) 2 nM CDK6 (Cell-free assay) 10 nM
In vitro	Abemaciclib highly selective inhibits the complexes CDK4/ cyclin D1 (IC50 =2 nmol/L) and CDK6/cyclin D1 (IC50 =10 nmol/L), with no activity against other CDK/cyclin complexes or cell-cycle-related kinases within the nanomolar ranges, except for inhibition of CDK9 at IC50 at least five times higher. Besides the cell-cycle dependent activity, abemaciclib is able to boost antitumor immunity by potentiating tumor antigen presentation and selectively suppressing proliferation of regulatory T (Treg) cells at the same time. Consistent with its activity against CDK4 and CDK6, abemaciclib inhibits RB phosphorylation and leads to G1 arrest in RB-proficient cell lines. In vitro, treatment with abemaciclib resulted in increased activation of human T cells and upregulated expression of antigen presentation genes in MCF-7 breast cancer cells.
In vivo	In a colorectal cancer xenograft model used to develop an integrated pharmacokinetic/pharmacodynamic model, abemaciclib can be dosed orally on a continuous schedule to achieve sustained target inhibition and demonstrates not only durable cell-cycle inhibition but also single-agent antitumor activity. Tumor growth inhibition is observed in multiple other human cancer xenograft models, including those derived from non-small cell lung cancer (NSCLC), melanoma, glioblastoma, and mantle cell lymphoma. Abemaciclib distributes across the blood–brain barrier and prolongs survival in an intracranial glioblastoma xenograft model. In human, The pharmacokinetics of abemaciclib shows a slow absorption phase with a median time from oral dose to maximum plasma concentration (tmax) ranging from 4 to 6 hours. It is extensively cleared and distributed. The mean terminal elimination half-life (t1/2) ranged from 17.4 to 38.1 hours with no apparent dose-dependent change in clearance.
References	[1] https://pubmed.ncbi.nlm.nih.gov/29497278/ [2] https://pubmed.ncbi.nlm.nih.gov/27217383/ [3] https://pubmed.ncbi.nlm.nih.gov/29539425/

Applications

Methods	Biomarkers	Images	PMID
Western blot	p-Rb / Rb / p-EGFR / EGFR / p-HER2 / HER2 / p-HER3 / HER3 / p-P70S6K / P70S6K / p-S6RP / S6RP / Cyclin D1 β-catenin GSK3β / CAMKII pan CDK6 / CDK4 / AXL		26977878

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06139107	Recruiting	Breast Cancer	Mridula George MD\|Rutgers The State University of New Jersey	June 21 2024	Phase 1
NCT06259929	Not yet recruiting	Breast Cancer	Fondazione Oncotech	April 1 2024	Phase 2

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Abemaciclib (LY2835219) CDK4/6 inhibitor

Chemical Structure

Molecular Weight: 506.59