WARNING: This product is for research use only, not for human or veterinary use.
Hodoodo CAT#: H200292
CAS#: 885060-09-3 (free base)
Description: Filanesib, also known as ARRY-520, is a synthetic, small molecule targeting the kinesin spindle protein (KSP) with potential antineoplastic activity. KSP inhibitor ARRY-520 specifically inhibits KSP (kinesin-5 or Eg5), resulting in activation of the spindle assembly checkpoint, induction of cell cycle arrest during the mitotic phase, and consequently cell death in tumor cells that are actively dividing. Because KSP is not involved in postmitotic processes, such as neuronal transport, this agent does not cause the peripheral neuropathy that is often associated with tubulin-targeting agents. KSP is an ATP-dependent microtubule motor protein that is essential for the formation of bipolar spindles and the proper segregation of sister chromatids during mitosis.
Hodoodo Cat#: H200292
Name: Filanesib
CAS#: 885060-09-3 (free base)
Chemical Formula: C20H22F2N4O2S
Exact Mass: 420.14
Molecular Weight: 420.480
Elemental Analysis: C, 57.13; H, 5.27; F, 9.04; N, 13.32; O, 7.61; S, 7.6
Related CAS #: 885060-09-3 (free base) 1781834-99-8 (TFA) 885060-08-2 (R-isomer) 1385020-40-5 (HCl)
Synonym: ARRY-520; ARRY 520; ARRY520; Filanesib.
IUPAC/Chemical Name: (S)-2-(3-aminopropyl)-5-(2,5-difluorophenyl)-N-methoxy-N-methyl-2-phenyl-1,3,4-thiadiazole-3(2H)-carboxamide.
InChi Key: LLXISKGBWFTGEI-FQEVSTJZSA-N
InChi Code: InChI=1S/C20H22F2N4O2S/c1-25(28-2)19(27)26-20(11-6-12-23,14-7-4-3-5-8-14)29-18(24-26)16-13-15(21)9-10-17(16)22/h3-5,7-10,13H,6,11-12,23H2,1-2H3/t20-/m0/s1
SMILES Code: O=C(N1[C@@](C2=CC=CC=C2)(CCCN)SC(C3=CC(F)=CC=C3F)=N1)N(OC)C
Appearance: white solid powder
Purity: >95% (or refer to the Certificate of Analysis)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility: Soluble in DMSO, not in water
Shelf Life: >2 years if stored properly
Drug Formulation: This drug may be formulated in DMSO
Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code: 2934.99.9001
More Info: In preclinical studies of multiple myeloma, ARRY-520 monotherapy has superior anti-tumor activity compared to Velcade® (bortezomib) or Revlimid® (lenalidomide). Also, ARRY-520 combined with Velcade, including bortezomib-refractory models, showed synergistic activity in vivo and superadditive activity when combined with Revlimid. Apoptosis in myeloma cells treated with ARRY-520 requires loss of the short-lived survival protein Mcl-1, providing a likely mechanistic explanation for ARRY-520 activity. Further studies, including a single-agent Phase 2 study and combination trials in multiple myeloma, are planned. ARRY-520 inhibits kinesin spindle protein, or KSP, which plays an essential role in mitotic spindle formation. Like taxanes and vinca alkaloids, KSP inhibitors inhibit tumor growth by preventing mitotic spindle formation and cell division. However, unlike taxanes and vinca alkaloids, KSP inhibitors do not demonstrate certain side effects such as peripheral neuropathy and alopecia. ARRY-520 has demonstrated efficacy in preclinical hematological tumor models, with a 100.0% complete response rate observed in models of acute myeloid leukemia, or AML, and multiple myeloma, or MM. Treatment of MM models with ARRY-520 resulted in significant regression of tumors that had previously progressed after treatment with Velcade_ (bortezomib) or Revlimid_ (lenalidomide). In addition, ARRY-520 retained activity in a wide range of tumors resistant to other molecules with different mechanisms of action, such as the taxanes. Examination of pharmacodynamic activity in preclinical models reinforced that hematological cancers were among the most sensitive to ARRY-520. (Source: http://www.arraybiopharma.com/ProductPipeline/Cancer/KSP.asp). On June 05, 2010, Array BioPharma Inc. announced the presentation of positive Phase 1 clinical data for its novel kinesin spindle protein (KSP) inhibitor, ARRY-520. The data, which were presented at the American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago, Illinois, indicate that ARRY-520 was well tolerated and has shown encouraging preliminary results in the treatment of multiple myeloma. ARRY-520 is a novel, first-in-class, highly potent, selective KSP inhibitor currently advancing into a single-agent Phase 2 clinical trial and combination trials in patients with multiple myeloma.
| Biological target: | Filanesib is a kinesin spindle protein (KSP) inhibitor with an IC50 of 6 nM. |
| In vitro activity: | Inhibition of KSP by ARRY-520 blocked cell cycle progression, leading to apoptosis in acute myeloid leukemia cell lines that express high levels of KSP. Knockdown of p53, overexpression of XIAP and mutation in caspase-8 did not significantly affect sensitivity to ARRY-520, suggesting that the response is independent of p53, XIAP and the extrinsic apoptotic pathway. Although ARRY-520 induced mitotic arrest in both HL-60 and Bcl-2-overexpressing HL-60Bcl-2 cells, cell death was blunted in HL-60Bcl-2 cells, suggesting that the apoptotic program is executed through the mitochondrial pathway. Furthermore, ARRY-520 increased Bim protein levels prior to caspase activation in HL-60 cells. Reference: Leukemia. 2009 Oct;23(10):1755-62. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3593228/ |
| In vivo activity: | SCID mice implanted with HL-60 cells were treated with ARRY-520 to evaluate its effect in vivo. As shown in Figure 8A, ARRY-520 greatly decreased tumor volumes and all 5 mice showed complete responses (CR) on day 15. Although tumor growth was significantly inhibited during ARRY-520 treatment and became undetectable shortly after the treatment, tumors eventually outgrew suggesting that prolonged/repeated treatment is required to achieve better outcome. Reference: Leukemia. 2009 Oct;23(10):1755-62. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3593228/ |
| Solvent | Max Conc. mg/mL | Max Conc. mM | |
|---|---|---|---|
| Solubility | |||
| DMSO | 60.0 | 142.69 | |
| Ethanol | 20.0 | 47.56 | |
| DMF | 20.0 | 47.56 | |
| PBS (pH 7.2) | 0.2 | 0.48 |
The following data is based on the product molecular weight 420.48 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 1.15 mL | 5.76 mL | 11.51 mL |
| 5 mM | 0.23 mL | 1.15 mL | 2.3 mL |
| 10 mM | 0.12 mL | 0.58 mL | 1.15 mL |
| 50 mM | 0.02 mL | 0.12 mL | 0.23 mL |
| Formulation protocol: | 1. Carter BZ, Mak DH, Woessner R, Gross S, Schober WD, Estrov Z, Kantarjian H, Andreeff M. Inhibition of KSP by ARRY-520 induces cell cycle block and cell death via the mitochondrial pathway in AML cells. Leukemia. 2009 Oct;23(10):1755-62. doi: 10.1038/leu.2009.101. Epub 2009 May 21. PMID: 19458629; PMCID: PMC3593228. 2. Woessner R, Tunquist B, Lemieux C, Chlipala E, Jackinsky S, Dewolf W Jr, Voegtli W, Cox A, Rana S, Lee P, Walker D. ARRY-520, a novel KSP inhibitor with potent activity in hematological and taxane-resistant tumor models. Anticancer Res. 2009 Nov;29(11):4373-80. PMID: 20032381. |
| In vitro protocol: | 1. Carter BZ, Mak DH, Woessner R, Gross S, Schober WD, Estrov Z, Kantarjian H, Andreeff M. Inhibition of KSP by ARRY-520 induces cell cycle block and cell death via the mitochondrial pathway in AML cells. Leukemia. 2009 Oct;23(10):1755-62. doi: 10.1038/leu.2009.101. Epub 2009 May 21. PMID: 19458629; PMCID: PMC3593228. 2. Woessner R, Tunquist B, Lemieux C, Chlipala E, Jackinsky S, Dewolf W Jr, Voegtli W, Cox A, Rana S, Lee P, Walker D. ARRY-520, a novel KSP inhibitor with potent activity in hematological and taxane-resistant tumor models. Anticancer Res. 2009 Nov;29(11):4373-80. PMID: 20032381. |
| In vivo protocol: | 1. Carter BZ, Mak DH, Woessner R, Gross S, Schober WD, Estrov Z, Kantarjian H, Andreeff M. Inhibition of KSP by ARRY-520 induces cell cycle block and cell death via the mitochondrial pathway in AML cells. Leukemia. 2009 Oct;23(10):1755-62. doi: 10.1038/leu.2009.101. Epub 2009 May 21. PMID: 19458629; PMCID: PMC3593228. 2. Woessner R, Tunquist B, Lemieux C, Chlipala E, Jackinsky S, Dewolf W Jr, Voegtli W, Cox A, Rana S, Lee P, Walker D. ARRY-520, a novel KSP inhibitor with potent activity in hematological and taxane-resistant tumor models. Anticancer Res. 2009 Nov;29(11):4373-80. PMID: 20032381. |
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