For research use only.

Catalog No.S7537

29 publications

LB-100 Chemical Structure

CAS No. 1026680-07-8

LB-100 is a water soluble protein phosphatase 2A (PP2A) inhibitor with IC50s of 0.85 μM and 3.87 μM in BxPc-3 and Panc-1 cells.

Selleck's LB-100 has been cited by 29 publications

Purity & Quality Control

Choose Selective PP2A Inhibitors

Biological Activity

Description LB-100 is a water soluble protein phosphatase 2A (PP2A) inhibitor with IC50s of 0.85 μM and 3.87 μM in BxPc-3 and Panc-1 cells.
PP2A [1]
In vitro

LB-100 inhibits the cell growth with IC50 of 2.3 μM (in BxPc-3) or 1.7 μM (in Panc-1 cell). In BxPc-3, Panc-1, and SW1990 cells, LB-100 reduces the PP2A activity by 30-50%. LB-100 increases concentration of doxorubicin within cells (2.5 fold to control) and sensitizes tumor cells to the cytotoxicity of doxorubicin. LB-100 increaseds VEGF secretion, and thus enhances HIF-1α-VEGF mediated angiogenesis.[1]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
U251 cells Mo\4SpVv[3Srb36gZZN{[Xl? MYeyJO69VQ>? NHmxcWc{KGixdYLzJIFv\CB4IHjveZJ{ M3TIO5Rz\WG2bXXueEB4cXSqIEKg{txOKEyEMUCwJJJm\HWlZXSgVHAzSSCjY4Tpeol1gSC2bzC2NUUhd2ZiY3;ueJJwdCClZXzsd{Bi\nSncjDic5RpKHSqcnXlJIFv\CC|aYigbI92enNib3[gUGIyODBiZYjwc5N2emVw M1q1UlxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ3OUO5O|YzLz5{NUmzPVc3OjxxYU6=
D283 cells M{H4UWNmdGxidnnhZoltcXS7IHHzd4F6 M4jDUGlEPTB;MD65JO69VSxidYPpcochYFSWIHHzd4F6ew>? MV[8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zPjd7OU[3NEc,OjZ5OUm2O|A9N2F-
DAOY cells NF3ZN5pE\WyuII\pZYJqdGm2eTDhd5NigQ>? MXPJR|UxRTJwOTFOwG0tKHW|aX7nJHhVXCCjc4PhfZM> MmrWQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjZ5OUm2O|AoRjJ4N{m5OlcxRC:jPh?=
D341 cells MlHFR4VtdCC4aXHibYxqfHliYYPzZZk> MVPJR|UxRTFwOTFOwG0tKHW|aX7nJHhVXCCjc4PhfZM> NFXJW4I9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{Nke5PVY4OCd-Mk[3PVk3PzB:L3G+
CH-157 cells Mmr1SpVv[3Srb36gZZN{[Xl? MUiyMlUh|ryP NUf0Tll4OyCqb4Xydy=> NFjqSVRNSi1zMECgd4lodmmoaXPhcpRtgSCnbnjhcoNm\CC2aHWgdJJweG:{dHnvckBw\iClZXzsd{BqdiCJMj;NMi=> M3[1UVxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7MUm5NFA3Lz5{OUG5PVAxPjxxYU6=
SKOV-3 NHf5VYJEgXSxdH;4bYNqfHliYYPzZZk> MUi3NkBp NHjBW2NKSzVyIE2gNVAvOSEEsTCxMlgh|ryP M2DRNlxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ3M{e2OlA5Lz5{NUO3OlYxQDxxYU6=
OVCAR-8 MXfDfZRwfG:6aXPpeJkh[XO|YYm= M{XJS|czKGh? MlLSTWM2OCB;IEWuOUDDuSByLkWg{txO NYC0[3BURGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkWzO|Y3ODhpPkK1N|c3PjB6PD;hQi=>
PEO-4 MXnDfZRwfG:6aXPpeJkh[XO|YYm= M{GxTlczKGh? NWraeIFwUUN3MDC9JFUhyrFiMD62JO69VQ>? MkPSQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjV|N{[2NFgoRjJ3M{e2OlA5RC:jPh?=
PEO-6 NEHubWJEgXSxdH;4bYNqfHliYYPzZZk> MWq3NkBp MXPJR|UxKD1iNT6xJOKyKDBwMjFOwG0> MXS8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zPTN5Nk[wPEc,OjV|N{[2NFg9N2F-
PEO1-Brca2 Missense NXj1NHNwS3m2b4TvfIlkcXS7IHHzd4F6 MkXhO|IhcA>? NF;lPVJKSzVyIE2gOk4zKMLzIEGuOUDPxE1? NIrKc2s9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{NUO3OlYxQCd-MkWzO|Y3ODh:L3G+
PEO1-Brca2 STOP NHfMU4lEgXSxdH;4bYNqfHliYYPzZZk> NVHOUmFFPzJiaB?= M4rN[GlEPTBiPTC2MlIhyrFiMT6wJO69VQ>? NHHvepE9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{NUO3OlYxQCd-MkWzO|Y3ODh:L3G+
Huh-7 M1\SVXBROkFiYXP0bZZqfHliYYPzZZl{ NGHIPFc2KM7:bX;sM2w> M{jmVVIhcA>? Ml:0doVlfWOnZDD0bIUh[WO2aY\peJkhd2ZiUGCyRUB1dyCjYn;1eEA4OCV? NHrFdWc9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{NEi2O|I1QSd-MkS4OlczPDl:L3G+
HepG2 Ml\wVHAzSSCjY4Tpeol1gSCjc4PhfZM> NEK1eXE2KM7:bX;sM2w> NWHEUFZDOiCq MlHCdoVlfWOnZDD0bIUh[WO2aY\peJkhd2ZiUGCyRUB1dyCjYn;1eEA4OCV? NVzBcnpIRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkS4OlczPDlpPkK0PFY4OjR7PD;hQi=>
HL-7702 MlTEVHAzSSCjY4Tpeol1gSCjc4PhfZM> NFPv[2E2KM7:bX;sM2w> M2P3V|IhcA>? MVjy[YR2[2WmIITo[UBi[3Srdnn0fUBw\iCSUELBJJRwKGGkb4X0JFcxLQ>? NW\nfoxpRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkS4OlczPDlpPkK0PFY4OjR7PD;hQi=>

... Click to View More Cell Line Experimental Data

Methods Test Index PMID
Western blot
p-AMPKα1 / AMPKα1 / p-ACC / ACC / p-p70S6K1 / p-4EBP1 ; 

PubMed: 29221169     

HCT-116 cells were treated with LB-100 at 10 μM, cells were further cultured for the designated time. Expressions of listed proteins were tested by Western blotting assay.  

Cyclin D1 / c-myc / mcl-1 / Hsp90 ; 

PubMed: 29199006     

LB-100 down-regulates expression of STAT3 target genes. Western blot analysis of IOMM-LEE, GAR and CH-157 cells treated with increasing LB100 concentration demonstrates dose-dependent decrease in STAT3 target genes, including mcl-1, c-myc, and cyclin D.

29221169 29199006
Growth inhibition assay
Cell division ; 

PubMed: 29844427     

In vitro proliferation of CD4+ T cells in the presence of LB-100 dose titration, measured by dilution of the cytosolic CFSE. Percentage of cells divided was plotted against concentration of LB-100.

Cell viability ; 

PubMed: 29199006     

Three meningioma cell lines IOMM-LEE, GAR and CH-157 were used in vitro. XTT assays were performed after 48 hours of treatment. Increasing concentrations of LB-100 reduced cell viability, but cytotoxic effect was seen only at high drug concentration with 䲧疝Ỵ疞㧀

29844427 29199006
In vivo In a mouse pancreatic cancer xenograft model, LB-100 (2 mg/kg, i.p.) enhances chemotherapy of doxorubicin. LB-100 causes higher density of microvessel in tumors and rapid blood flow at the surface of tumors. [1]


Kinase Assay:


- Collapse

PP2A activity assays:

Cultured pancreatic cancer cells are treated with IC50 of LB-100 for each cell line or equal volume of vehicle for 2 hours, and PP2A activity assays are then performed using Ser/Thr phosphatase assay kit. Cells are lysed with an ultrasonic cell disruptor, and the PP2A concentration is measured using a Ser/Thr phosphatase assay kit according to the instructions. Assays for each cell line are performed in triplicate.
Cell Research:


- Collapse
  • Cell lines: BxPc-3, and Panc-1 cell lines
  • Concentrations: ~ 10 μM
  • Incubation Time: 48 h
  • Method:

    Cytotoxicity is conducted by using a Cell Counting Kit-8. Cells are seeded in 96-well plates with a density of 3000 cells per well and are assessed after treatments following the CCK-8 protocol. Relative cytotoxicity is expressed as a percentage of specific controls.

    (Only for Reference)
Animal Research:


- Collapse
  • Animal Models: BALB/c nude mice bearing Panc-1 xenograft
  • Dosages: 2 mg/kg
  • Administration: i.p.
    (Only for Reference)

Solubility (25°C)

In vitro Water 53 mg/mL (197.53 mM)
DMSO 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 268.31


CAS No. 1026680-07-8
Storage powder
in solvent
Synonyms N/A
Smiles CN1CCN(CC1)C(=O)C2C3CCC(C2C(=O)O)O3

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 ul Number of animals
Step 2: Enter the in vivo formulation ()
% DMSO % % Tween 80 % ddH2O

Bio Calculators

Molarity Calculator

Molarity Calculator

Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:

Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)

  • Mass
    Molecular Weight

*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and SDS / COA (available on product pages).

Dilution Calculator

Dilution Calculator

Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:

Concentration (start) x Volume (start) = Concentration (final) x Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )

  • C1

* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / COA (available online).

The Serial Dilution Calculator Equation

  • Serial Dilutions

  • Computed Result

  • C1=C0/X C1: LOG(C1):
    C2=C1/X C2: LOG(C2):
    C3=C2/X C3: LOG(C3):
    C4=C3/X C4: LOG(C4):
    C5=C4/X C5: LOG(C5):
    C6=C5/X C6: LOG(C6):
    C7=C6/X C7: LOG(C7):
    C8=C7/X C8: LOG(C8):
Molecular Weight Calculator

Molecular Weight Calculator

Enter the chemical formula of a compound to calculate its molar mass and elemental composition:

Total Molecular Weight: g/mol

Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2

Instructions to calculate molar mass (molecular weight) of a chemical compound:

To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.

Definitions of molecular mass, molecular weight, molar mass and molar weight:

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03886662 Unknown status Drug: LB-100 Myelodysplastic Syndromes Lixte Biotechnology Holdings Inc. April 2019 Phase 1|Phase 2
NCT03027388 Recruiting Drug: LB-100 Astrocytoma Grades II III and IV|Glioblastoma Multiforme|Giant Cell Glioblastoma|Glioma|Oligodendrogliomas National Cancer Institute (NCI)|National Institutes of Health Clinical Center (CC) January 9 2019 Phase 2
NCT01837667 Completed Drug: LB-100 for Injection|Drug: Docetaxel Tumors|Neoplasms|Cancer Lixte Biotechnology Holdings Inc. February 2013 Phase 1

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

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

  • * Indicates a Required Field
Tags: buy LB-100 | LB-100 supplier | purchase LB-100 | LB-100 cost | LB-100 manufacturer | order LB-100 | LB-100 distributor
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID