Catalog No.S7009

LCL161 Chemical Structure

Molecular Weight(MW): 500.63

LCL-161, a small molecule second mitochondrial activator of caspase (SMAC) mimetic, potently binds to and inhibits multiple IAPs (i.e. XIAP, c-IAP).

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Cited by 9 Publications

2 Customer Reviews

  • Parental or rVCR RD cells were either left untreated (UT) or exposed to 40 μM of LCL161 in the absence or presence of PSC-833 (10 μM) for 48 h before analysis of DNA fragmentation using PI staining and flow cytometry (data shown are mean + SD, n = 3). *, p < 0.05, **, p < 0.01, ***, p < 0.001.

    Cancer Lett, 2018, 440-441:126-134. LCL161 purchased from Selleck.

    The Smac mimetic LCL-161, which inhibits cIAP1, modestly sensitizes hair cells to gentamicin damage. (A) Variable LCL-161 concentrations do not affect toxicity to 50 μM neomycin (one-way ANOVA, F4,69 = 1.54, p = 0.199). (B) Variable LCL has a modest but significant effect on gentamicin toxicity (one-way ANOVA, F4,31 = 3.14, p = 0.028), with 10 μM LCL conveying significant sensitization (∗p < 0.05).

    Front Cell Neurosci, 2017, LCL161 purchased from Selleck.

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Biological Activity

Description LCL-161, a small molecule second mitochondrial activator of caspase (SMAC) mimetic, potently binds to and inhibits multiple IAPs (i.e. XIAP, c-IAP).
cIAP [1] XIAP [1]
In vitro

LCL161 binds to inhibitors of apoptosis proteins (IAPs) with high affinity and initiates the destruction of cIAP1 and cIAP2, which further induces apoptosis via caspase activation. LCL161 modestly inhibits the growth of FLT3-ITD-expressing cells when administered alone, with an IC50 ranging from ~0.5 μM (Ba/F3-FLT3-ITD cells) to ~4 μM (MOLM13-luc+ cells). The potency of LCL161 against the D835Y mutant is observed to be considerably higher, with an IC50 of ~50 nM when tested against Ba/F3-D835Y cells. Treatment of MOLM13-luc+ cells with a combination of LCL161 and PKC412 leads to significantly more killing of cells than either agent alone, with Calcusyn combination indices suggestive of synergy. PKC412 and LCL161 induces apoptosis of MOLM13-luc+ cells. The combination of PKC412 and LCL161 leads to a higher induction of apoptosis than either agent alone. LCL161 is able to override stromal-mediated rescue of mutant FLT3-expressing cells through positive combination with PKC412. LCL161 inhibits the growth of Ba/F3.p210 cells with an IC50 of ~100 nM. The combination of LCL161 and the ABL inhibitor, imatinib, is observed to be synergistic against BCR-ABL-expressing cells. LCL161 also has demonstrated activity against drug-resistant cells expressing point mutations in the target proteins. LCL161 at 1000 nM is able to mostly or completely kill Ba/F3-derived cell lines conferring resistance to PKC412, which express FLT3-ITD harboring point mutations in the ATP-binding pocket of FLT3. LCL161 also shows activity at concentrations ranging from 100 to 1000 nM against Ba/F3 cells expressing various imatinib- and nilotinib-resistant BCR-ABL point mutations. [1] LCL161 is evaluated against the 23 cell lines in the Pediatric Preclinical Testing Program (PPTP) in vitro panel using 96 hr. LCL161 achieves 50% growth inhibition against only 3 of the 23 tested PPTP cell lines under concentration of 10 μM. The three cell lines includes two T-cell ALL cell lines (COG-LL-317 and CCRF-CEM) and an anaplastic large cell lymphoma cell line (Karpas-299), with CCRF-CEM and Karpas-299 showing the lowest relative IC50 values (0.25 and 1.6 μM, respectively). [2] LCL161shows immunomodulatory properties on human immune subsets. T lymphocytes treated with LCL161 demonstrates significantly enhanced cytokine secretion upon activation, with little effect on CD4 and CD8 T-cell survival or proliferation. LCL161 treatment of peripheral blood mononuclear cells significantly enhances priming of naïve T cells with synthetic peptides in vitro. Myeloid dendritic cells undergoes phenotypic maturation upon LCL161 and demonstrates a reduced capacity to cross-present a tumor antigen-based vaccine. These effects are potentially mediated through an observed activation of the canonical and non-canonical NF-κB pathways, following LCL161 with a resulting upregulation of anti-apoptotic molecules. [3]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
human LOX cells NHrkXVJEgXSxdH;4bYPDqGG|c3H5 NYq5eoRpOy5|IN88US=> MmXQN{Bl[Xm| MojEVI91\W62aXH0bY9vKG:oIHPvcoF1fW23bXHiMYlv\HWlZXSgZ5l1d3SxeHnjbZR6KGGpYXnud5QhcHWvYX6gUG9ZKGOnbHzzJIF1KDNwMzD1UUBi\nSncjCzJIRigXNiYomgUXRUKGG|c3H5 NYHBbnQ{OjRyOEO3PFI>
human BxPC3 cells NX7WfYk{S3m2b4TvfIlkyqCjc4PhfS=> NYLzVJU6Oy5|IN88US=> MoHhOUBl[Xm| NEjPO4RRd3SnboTpZZRqd25ib3[gZ49v[XS3bYXtZYIucW6mdXPl[EBkgXSxdH;4bYNqfHliYXfhbY5{fCCqdX3hckBDgFCFMzDj[YxteyCjdDCzMlMhfU1iYX\0[ZIhPSCmYYnzJIJ6KE2WUzDhd5NigQ>? M1S4blI1ODh|N{iy
human LS180 cells MVLDfZRwfG:6aXRCpIF{e2G7 NVrGc2dYOy5|IN88US=> M1mzS|Uh\GG7cx?= NV7TWXFmWG:2ZX70bYF1cW:wIH;mJINwdmG2dX31cYFjNWmwZIXj[YQh[3m2b4TvfIlkcXS7IHHnZYlve3RiaIXtZY4hVFNzOECgZ4VtdHNiYYSgN{4{KHWPIHHmeIVzKDViZHH5d{BjgSCPVGOgZZN{[Xl? NIXRTo8zPDB6M{e4Ni=>
human HCT15 cells Mm\uR5l1d3SxeHnjxsBie3OjeR?= MVOzMlMh|ryP MlW3OUBl[Xm| MUXQc5RmdnSrYYTpc44hd2ZiY3;uZZR2dXWvYXKtbY5lfWOnZDDjfZRwfG:6aXPpeJkh[WejaX7zeEBpfW2jbjDIR3QyPSClZXzsd{BifCB|LkOgeW0h[W[2ZYKgOUBl[Xm|IHL5JG1VWyCjc4PhfS=> NW\JNXZuOjRyOEO3PFI>
human H460 cells MUXDfZRwfG:6aXRCpIF{e2G7 MWKzMlMh|ryP NFrNSlM2KGSjeYO= M{L1UXBwfGWwdHnheIlwdiCxZjDjc45ifHWvdX3hZk1qdmS3Y3XkJIN6fG:2b4jpZ4l1gSCjZ3HpcpN1KGi3bXHuJGg1PjBiY3XscJMh[XRiMz6zJJVOKGGodHXyJFUh\GG7czDifUBOXFNiYYPzZZk> NWn5TlhzOjRyOEO3PFI>
human SW620 cells MVvDfZRwfG:6aXRCpIF{e2G7 NHXWZng{NjNizszN NFPZ[o42KGSjeYO= NGSxO4NRd3SnboTpZZRqd25ib3[gZ49v[XS3bYXtZYIucW6mdXPl[EBkgXSxdH;4bYNqfHliYXfhbY5{fCCqdX3hckBUXzZ{MDDj[YxteyCjdDCzMlMhfU1iYX\0[ZIhPSCmYYnzJIJ6KE2WUzDhd5NigQ>? NUCyRolxOjRyOEO3PFI>
human SW620 cells NEW2ZYpEgXSxdH;4bYPDqGG|c3H5 MYOxMlEh|ryP MmrIOUBl[Xm| MlXzVI91\W62aXH0bY9vKG:oIHPvcoF1fW23bXHiMYlv\HWlZXSgZ5l1d3SxeHnjbZR6KGGpYXnud5QhcHWvYX6gV3c3OjBiY3XscJMh[XRiMT6xJJVOKGGodHXyJFUh\GG7czDifUBOXFNiYYPzZZk> Ml;1NlQxQDN5OEK=
human Capan1 cells MnXuR5l1d3SxeHnjxsBie3OjeR?= NILzenAzNjVizszN M1LEPFUh\GG7cx?= NV3RVJFvWG:2ZX70bYF1cW:wIH;mJINwdmG2dX31cYFjNWmwZIXj[YQh[XCxcITvd4l{KGmwIHj1cYFvKEOjcHHuNUBk\WyuczDheEAzNjVidV2gZYZ1\XJiNTDkZZl{KGK7IF3UV{Bie3OjeR?= M4PoZ|I1ODl|OUSw
human SKMES1 cells NX;lfmo2S3m2b4TvfIlkyqCjc4PhfS=> MXqyMlUh|ryP NGm4NpU2KGSjeYO= M2j6SnBwfGWwdHnheIlwdiCxZjDjc45ifHWvdX3hZk1qdmS3Y3XkJIFxd3C2b4Ppd{BqdiCqdX3hckBUU02HU{GgZ4VtdHNiYYSgNk42KHWPIHHmeIVzKDViZHH5d{BjgSCPVGOgZZN{[Xl? MkDtNlQxQTN7NEC=
human PC3 cells NFfCNJFCeG:ydH;zbZMh[XO|YYm= MU[yMlUh|ryP M4jhdVUh\GG7cx?= NUn5TFM2UW6mdXP0bY9vKG:oIIPlcpNqfGm8YYTpc44hd2ZiaIXtZY4hWEN|IHPlcIx{KHSxIHPvcoF1fW23bXHiMYlv\HWlZXSgZZBweHSxc3nzJIF{e2W|c3XkJIF{KGOnbHygeoli[mmuaYT5JIF1KDJwNTD1UUBi\nSncjC1JIRigXNiYomgUXRUKGG|c3H5 M3XaelI1ODl|OUSw
human AGS cells NHT3VJhCeG:ydH;zbZMh[XO|YYm= NWLt[YxjOi53IN88US=> Mn\IOUBl[Xm| NFrpfmhKdmS3Y4Tpc44hd2Zic3Xud4l1cXqjdHnvckBw\iCqdX3hckBCT1NiY3XscJMhfG9iY3;uZZR2dXWvYXKtbY5lfWOnZDDhdI9xfG:|aYOgZZN{\XO|ZXSgZZMh[2WubDD2bYFjcWyrdImgZZQhOi53IIXNJIFnfGW{IEWg[IF6eyCkeTDNWHMh[XO|YYm= Mom3NlQxQTN7NEC=
human U118MG cells MVzBdI9xfG:|aYOgZZN{[Xl? MX:yMlUh|ryP M{LIcVUh\GG7cx?= MlnYVI91\W62aXH0bY9vKG:oIHPvcoF1fW23bXHiMYlv\HWlZXSgZZBweHSxc3nzJIlvKGi3bXHuJHUyOTiPRzDj[YxteyCjdDCyMlUhfU1iYX\0[ZIhPSCmYYnzJIJ6KE2WUzDhd5NigQ>? MnnjNlQxQTN7NEC=
human SKMES1 cells NVX2PYh2SXCxcITvd4l{KGG|c3H5 M4TzdlIvPSEQvF2= MlTOOUBl[Xm| MkHVVI91\W62aXH0bY9vKG:oIHPvcoF1fW23bXHiMYlv\HWlZXSgZZBweHSxc3nzJIlvKGi3bXHuJHNMVUWVMTDj[YxteyCjdDCyMlUhfU1iYX\0[ZIhPSCmYYnzJIJ6KE2WUzDhd5NigcLi MlT2NlQxQTN7NEC=
human Capan1 cells NUjwe2pISXCxcITvd4l{KGG|c3H5 MlvENk42KM7:TR?= NIX0O5g2KGSjeYO= MoXiVI91\W62aXH0bY9vKG:oIHPvcoF1fW23bXHiMYlv\HWlZXSgZZBweHSxc3nzJIlvKGi3bXHuJGNieGGwMTDj[YxteyCjdDCyMlUhfU1iYX\0[ZIhPSCmYYnzJIJ6KE2WUzDhd5NigQ>? M4fkblI1ODl|OUSw
human MDA-MB-231 cells NWntdHZVTnWwY4Tpc44h[XO|YYm= NFfsRXgxNjN5LUOuN{DPxE1? NWTEZ5JPOTliaB?= NXu5SVhJUW6qaXLpeIlwdiCxZjDjTWFROS9{IHnuJIh2dWGwIF3ERU1OSi1{M{GgZ4VtdHNiYYPz[ZN{\WRiYYOgbY5lfWO2aX;uJI9nKFSQRnHsdIhiKGyndnXsJIF1KDBwM{egeI8hOy5|IIXNJIFnfGW{IEG5JIhzeyCkeTDFUGlUScLi M4[xbFI1ODl|OUSw

... Click to View More Cell Line Experimental Data

Methods Test Index PMID
Western blot
cIAP1 / cIAP2 / XIAP / surivivin ; 

PubMed: 27737687     

A549 and H460 cells were treated for 48 h with 0-20 μM LCL161. The protein levels of cIAP1, cIAP2, XIAP and survivin were assessed by western blotting. β-actin was used as a loading control. The bar graphs represent the mean ± SD of different proteins/β-actin; *P < 0.05; **P < 0.01; ***P < 0.001

Growth inhibition assay
Cell viability; 

PubMed: 27737687     

Cells were treated for 48 h with the indicated concentrations of LCL161 and paclitaxel (c) or for the indicated times with 10 μM LCL161 and/or 10 μM paclitaxel (d). Cell viability was determined by the MTT assay. Data are represented as mean ± SD; *P < 0.05; **P < 0.01; ***P < 0.001

In vivo LCL161 significantly enhances the ability of PKC412 to inhibit the growth of Ba/F3-FLT3-ITD-luc+ cells in vivo. LCL161 is also shown to positively combine with the standard chemotherapeutic agents, Ara-c and doxorubicin, against FLT3-ITD-expressing cells and against D835Y-expressing cells. There is an additive effect achieved by combining both Nilotinib and LCL161 in suppressing leukemia growth. LCL161 (100 mg/kg) enhances in vivo effects of high-moderate doses of nilotinib (100 mg/kg) on leukemia burden in mice. [1] CL161 is tested against the Pediatric Preclinical Testing Program (PPTP) in vivo panels (30 or 75 mg/kg [solid tumors] or 100 mg/kg [ALL]) administered orally twice in a week. LCL161 induces significant differences in EFS distribution in approximately one-third of solid tumor xenografts (osteosarcoma and glioblastoma), but not in ALL xenografts. No objective tumor responses are observed. In vivo LCL161 demonstrates limited single agent activity against the pediatric preclinical models studied. [2]


Cell Research:


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  • Cell lines: Human T-cell ALL cell lines COG-LL-317
  • Concentrations: ~10 μM
  • Incubation Time: 96 hours
  • Method:

    In vitro testing is performed using DIMSCAN

    (Only for Reference)

Solubility (25°C)

In vitro DMSO 100 mg/mL (199.74 mM)
Ethanol 20 mg/mL warmed (39.94 mM)
Water 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 500.63


CAS No. 1005342-46-0
Storage powder
in solvent
Synonyms N/A

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Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03111992 Recruiting Drug: PDR001|Drug: CJM112|Drug: LCL161 Multiple Myeloma Novartis Pharmaceuticals|Novartis December 18 2017 Phase 1
NCT01934634 Unknown status Drug: LCL161|Drug: Gemcitabine|Drug: nab-Paclitaxel Metastatic Pancreatic Cancer US Oncology Research|Novartis Pharmaceuticals|Delta Clinical Research LLC March 2014 Phase 1
NCT01968915 Completed Drug: LCL161|Drug: Paclitaxel Neoplasms Novartis Pharmaceuticals|Novartis November 2013 Phase 1
NCT01617668 Completed Drug: LCL161|Drug: paclitaxel Breast Cancer Novartis Pharmaceuticals|Novartis August 2012 Phase 2

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID