Ispinesib (SB-715992)

Catalog No.S1452 Synonyms: CK0238273

For research use only.

Ispinesib (SB-715992, CK0238273) is a potent, specific and reversible inhibitor of kinesin spindle protein (KSP) with Ki app of 1.7 nM in a cell-free assay, no inhibition to CENP-E, RabK6, MCAK, MKLP1, KHC or Kif1A. Ispinesib induces mitotic arrest and apoptotic cell death. Phase 2.

Ispinesib (SB-715992) Chemical Structure

CAS No. 336113-53-2

Selleck's Ispinesib (SB-715992) has been cited by 23 publications

Purity & Quality Control

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Biological Activity

Description Ispinesib (SB-715992, CK0238273) is a potent, specific and reversible inhibitor of kinesin spindle protein (KSP) with Ki app of 1.7 nM in a cell-free assay, no inhibition to CENP-E, RabK6, MCAK, MKLP1, KHC or Kif1A. Ispinesib induces mitotic arrest and apoptotic cell death. Phase 2.
Features An allosteric, potent, specific, and reversible inhibitor of the mitotic kinesin spindle protein (KSP) (HsEg5).
Targets
KSP (HsEg5) [1]
(Cell-free assay)
1.7 nM(Ki app)
In vitro

Ispinesib is a potent, allosteric, reversible, and specific inhibitor of KSP, which changes the binding property of KSP to microtubules and disturbs its movement by inhibiting ADP release without altering the release of the KSP-ADP complex from the microtubule. [1] Ispinesib shows potent cytotoxic activity in a panel of tumor cell lines, including Colo205, Colo201, HT-29, M5076, Madison-109, and MX-1, with IC50 of 1.2 nM to 9.5 nM. [2] In PC-3 prostate cancer cells, Ispinesib (15 nM and 30 nM) blocks cell proliferation and induces apoptosis by regulating the expression levels of genes that controls apoptosis, cell proliferation, cell cycle, and cell signaling, such as EGFR, p27, p15, and IL-11. [3] In a panel of 53 breast cell lines, Ispinesib (7.4 nM–600 nM) demonstrates broad inhibitory activity. In BT-474 and MDA-MB-468 cells, Ispinesib (150 nM) induces apoptosis, as revealed by a higher proportion of apoptotic cells, lower antiapoptotic Bcl-XL level, and higher proapoptotic Bax and Bid levels. [4]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
HCT116 MV7BcpRqeHKxbHnm[ZJifGm4ZTDhd5NigQ>? MVS3NkBpenN? MnLvRY51cXC{b3zp[oVz[XSrdnWgZYN1cX[rdImgZYdicW6|dDDoeY1idiCKQ2SxNVYh[2WubIOgZYZ1\XJiN{KgbJJ{KGK7IFHsZY1ieiCkbIXlJIF{e2G7LDDHTVUxRTBwMEK1{txO NWTsfFJURGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkKyOFgzPjJpPkKyNlQ5OjZ{PD;hQi=>
hTERT-HME1 NUL4dJJuSW62aYDyc4xq\mW{YYTpeoUh[XO|YYm= MlzTO|IhcHK| Ml75RY51cXC{b3zp[oVz[XSrdnWgZYN1cX[rdImgZYdicW6|dDDoeY1idiCqVFXSWE1JVUVzIHPlcIx{KGGodHXyJFczKGi{czDifUBCdGGvYYKgZox2\SCjc4PhfUwhT0l3ME2wMlA{Os7:TR?= MWW8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zOjJ2OEK2Nkc,OjJ{NEiyOlI9N2F-
K562 MUfBcpRqeHKxbHnm[ZJifGm4ZTDhd5NigQ>? NHPmVIM4OiCqcoO= M4\i[WFvfGmycn;sbYZmemG2aY\lJIFkfGm4aYT5JIFo[Wmwc4SgbJVu[W5iS{W2NkBk\WyuczDh[pRmeiB5MjDodpMh[nliQXzhcYFzKGKudXWgZZN{[XluIFfJOVA:OC5yN{JOwG0> MXK8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zOjJ2OEK2Nkc,OjJ{NEiyOlI9N2F-
BxPC3 Mn;xRY51cXC{b3zp[oVz[XSrdnWgZZN{[Xl? NVf3XWQ3PzJiaILz MWjBcpRqeHKxbHnm[ZJifGm4ZTDhZ5Rqfmm2eTDh[4FqdnO2IHj1cYFvKEK6UFOzJINmdGy|IHHmeIVzKDd{IHjyd{BjgSCDbHHtZZIh[my3ZTDhd5NigSxiR1m1NF0xNjB6zszN MV68ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zOjJ2OEK2Nkc,OjJ{NEiyOlI9N2F-
NCI-H1299 NVeyRYRLSW62aYDyc4xq\mW{YYTpeoUh[XO|YYm= NHf4ZYE4OiCqcoO= Mlf1RY51cXC{b3zp[oVz[XSrdnWgZYN1cX[rdImgZYdicW6|dDDoeY1idiCQQ1mtTFEzQTliY3XscJMh[W[2ZYKgO|IhcHK|IHL5JGFt[W2jcjDicJVmKGG|c3H5MEBIUTVyPUCuNFgz|ryP M1\lWFxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ{MkS4NlYzLz5{MkK0PFI3OjxxYU6=
LNCAP M13Wcmdzd3e2aDDpcohq[mm2aX;uJIF{e2G7 MWG3NkBpenN? NWrtV5NXT3Kxd4ToJIlvcGmkaYTpc44hd2ZiaIXtZY4hVE6FQWCgZ4VtdHNiYX\0[ZIhPzJiaILzJIJ6KEGuYX3hdkBjdHWnIHHzd4F6NCCJSUWwQVAvODJ{zszN MkezQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjN|OUSxPFAoRjJ|M{m0NVgxRC:jPh?=
HCT116 MVzHdo94fGhiaX7obYJqfGmxbjDhd5NigQ>? M1rtcFczKGi{cx?= MoDGS5Jwf3SqIHnubIljcXSrb36gc4YhcHWvYX6gTGNVOTF4IHPlcIx{KGGodHXyJFczKGi{czDifUBCdGGvYYKgZox2\SCjc4PhfUwhT0l3ME2wMlAzPc7:TR?= MXu8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zOzN7NEG4NEc,OjN|OUSxPFA9N2F-
PC3 NFewRlNIem:5dHigbY5pcWKrdHnvckBie3OjeR?= NV;hNJhRPzJiaILz MnzwS5Jwf3SqIHnubIljcXSrb36gc4YhcHWvYX6gVGM{KGOnbHzzJIFnfGW{IEeyJIhzeyCkeTDBcIFu[XJiYnz1[UBie3OjeTygS2k2OD1yLkC1{txO M4LsclxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ|M{m0NVgxLz5{M{O5OFE5ODxxYU6=
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NCI-H1299 NWTsTo8xT3Kxd4ToJIlvcGmkaYTpc44h[XO|YYm= NIDLSpM4OiCqcoO= NWXKeZJPT3Kxd4ToJIlvcGmkaYTpc44hd2ZiaIXtZY4hVkOLLVixNlk6KGOnbHzzJIFnfGW{IEeyJIhzeyCkeTDBcIFu[XJiYnz1[UBie3OjeTygS2k2OD1yLkC4Nu69VQ>? NH\oNXU9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{M{O5OFE5OCd-MkOzPVQyQDB:L3G+
LXFS 538 MkjrRY51cXS3bX;yJIF{e2G7 NYq0OWZuPiCvZz;r[y=> MV3BcpRqfHWvb4KgZYN1cX[rdImgZYdicW6|dDDoeY1idiCOWF\TJFU{QCClZXzsd{B5\W6xZ4Lh[pRm\CCrbjDOUXJKKG63L371JI1wfXOnIHHzd4V{e2WmIHHzJJR2dW:{IILl[5Jme3Orb36gZZQhPiCvZz;r[{whcXBibXXhd5Vz\WRib36g[IF6KDF| NEWzXGI9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{M{O5OFE5OCd-MkOzPVQyQDB:L3G+
HeLa MWHBcpRqeHKxbHnm[ZJifGm4ZTDhd5NigQ>? NF;UTXg1QCCqcoO= M1LuZWFvfGmycn;sbYZmemG2aY\lJIFkfGm4aYT5JIFo[Wmwc4SgbJVu[W5iSHXMZUBk\WyuczDh[pRmeiB2ODDodpMh[nliTWTUJIF{e2G7LDDJR|UxRTIQvF2= MmPIQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjRzOES3O|YoRjJ2MUi0O|c3RC:jPh?=
MCF7 MW\BcpRqeHKxbHnm[ZJifGm4ZTDhd5NigQ>? MnmwOFghcHK| NUTWTHdlSW62aYDyc4xq\mW{YYTpeoUh[WO2aY\peJkh[WejaX7zeEBpfW2jbjDNR2Y4KGOnbHzzJIFnfGW{IES4JIhzeyCkeTDNWHQh[XO|YYmsJGlEPTB;MT6z{txO MVK8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zPDF6NEe3Okc,OjRzOES3O|Y9N2F-
HCT116 NV7rNGc1T3Kxd4ToJIlvcGmkaYTpc44h[XO|YYm= MWG3NkBpenN? NVO0eXYyT3Kxd4ToJIlvcGmkaYTpc44hd2ZiaIXtZY4hUEOWMUG2JINmdGy|IHHmeIVzKDd{IHjyd{BjgSCPVGOgZZN{[XluIFnDOVA:OC5yMEGx{txO MWG8ZUB1[XKpZYS9K39jdGGwazegbJJm\j1paIT0dJM7Ny:ydXLt[YQvdmOkaT7ucI0vdmmqLnfvek8zPjN7Nk[4PEc,OjZ|OU[2PFg9N2F-
TC32 NVnoZWtWeUiWUzDhd5NigQ>? M4LGPJFJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCWQ{OyJINmdGy| NYjkN4I{RGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
DAOY NIjtV4tyUFSVIHHzd4F6 NGfmPFJyUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCScnntZZJ6KHOlcnXlckBnd3JiRFHPXUBk\Wyucx?= M2LEeFxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
SJ-GBM2 NX7IVIszeUiWUzDhd5NigQ>? M2L2N5FJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCVSj3HRm0zKGOnbHzz MkOyQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
A673 MnXkdWhVWyCjc4PhfS=> MWTxTHRUKG:oIIDl[IlifHKrYzDjZY5k\XJiY3XscEBtcW6nczD0c{Bq\GWwdHnmfUBufWy2aYDs[UBweHCxcoT1col1cWW|IH\vdkBlenWpIILldJVzeG:|aX7nPkBRemmvYYL5JJNkemWnbjDmc5IhSTZ5MzDj[Yxtew>? MlniQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
SK-N-MC MVHxTHRUKGG|c3H5 M1PHO5FJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCVSz3OMW1EKGOnbHzz NFrmOIQ9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
NB-EBc1 NYfCR2o5eUiWUzDhd5NigQ>? M4PtSZFJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KFC{aX3hdpkhe2O{ZXXuJIZweiCQQj3FRoMyKGOnbHzz MnHvQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
Saos-2 MYXxTHRUKGG|c3H5 NH3SW|RyUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCScnntZZJ6KHOlcnXlckBnd3JiU3Hvd{0zKGOnbHzz NX7NU5R7RGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
LAN-5 M3PTfJFJXFNiYYPzZZk> NXXSfolzeUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiUILpcYFzgSC|Y4Ll[Y4h\m:{IFzBUk02KGOnbHzz NYnD[3VnRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
BT-12 M1jPOJFJXFNiYYPzZZk> MkTZdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohWHKrbXHyfUB{[3KnZX6g[o9zKEKWLUGyJINmdGy| NUCweo9FRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
OHS-50 MlS1dWhVWyCjc4PhfS=> MnnRdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohWHKrbXHyfUB{[3KnZX6g[o9zKE:KUz21NEBk\Wyucx?= NIDocFU9[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
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SK-N-MC NXywfHpjeUiWUzDhd5NigQ>? MnXFdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohS2:wZnnycYF1d3K7IIPjdoVmdiCob4KgV2suVi2PQzDj[Yxtew>? NVz2T3VxRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
BT-12 NYnJS4o3eUiWUzDhd5NigQ>? MV;xTHRUKG:oIIDl[IlifHKrYzDjZY5k\XJiY3XscEBtcW6nczD0c{Bq\GWwdHnmfUBufWy2aYDs[UBweHCxcoT1col1cWW|IH\vdkBlenWpIILldJVzeG:|aX7nPkBEd26oaYLtZZRwenlic3Py[YVvKG[xcjDCWE0yOiClZXzsdy=> M3;uTFxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
DAOY NYPhfoF5eUiWUzDhd5NigQ>? NXPzb|VZeUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiQ3;u[olzdWG2b4L5JJNkemWnbjDmc5IhTEGRWTDj[Yxtew>? MkTaQIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
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MG 63 (6-TG R) MoHEdWhVWyCjc4PhfS=> NX6xXpZzeUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiQ3;u[olzdWG2b4L5JJNkemWnbjDmc5IhVUdiNkOgLFYuXEdiUjmgZ4VtdHN? MnH0QIEhfGG{Z3X0QUdg[myjbnunJIhz\WZ;J3j0eJB{Qi9xcIXicYVlNm6lYnmucoxuNm6raD7nc5YwOjl2M{WxN|koRjJ7NEO1NVM6RC:jPh?=
U-2 OS MXTxTHRUKGG|c3H5 NXrYPJJReUiWUzDv[kBx\WSrYYTybYMh[2GwY3XyJINmdGxibHnu[ZMhfG9iaXTlcpRq\nlibYXseIlxdGVib4Dwc5J1fW6rdHnld{Bnd3JiZIL1[{Bz\XC3coDvd4lv\zpiQ3;u[olzdWG2b4L5JJNkemWnbjDmc5IhXS1{IF;TJINmdGy| M2rjRVxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
Rh41 NGD1VGxyUFSVIHHzd4F6 MWDxTHRUKG:oIIDl[IlifHKrYzDjZY5k\XJiY3XscEBtcW6nczD0c{Bq\GWwdHnmfUBufWy2aYDs[UBweHCxcoT1col1cWW|IH\vdkBlenWpIILldJVzeG:|aX7nPkBEd26oaYLtZZRwenlic3Py[YVvKG[xcjDSbFQyKGOnbHzz M3LMXlxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
RD MYPxTHRUKGG|c3H5 NHvsWYRyUFSVIH;mJJBm\GmjdILpZ{Bk[W6lZYKgZ4VtdCCuaX7ld{B1dyCrZHXueIlngSCvdXz0bZBt\SCxcIDvdpR2dmm2aXXzJIZweiCmcoXnJJJmeHW{cH;zbY5oQiCFb37mbZJu[XSxcomgd4Nz\WWwIH\vdkBTTCClZXzsdy=> NWrmZlVpRGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
Rh30 MoDEdWhVWyCjc4PhfS=> M2nzTJFJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KEOxbn\pdo1ifG:{eTDzZ5Jm\W5iZn;yJHJpOzBiY3XscJM> NYnxdplORGFidHHy[4V1RSehYnzhcosoKGi{ZX[9K4h1fHC|Oj:vdJVjdWWmLn7jZokvdmyvLn7pbE5od3ZxMkm0N|UyOzlpPkK5OFM2OTN7PD;hQi=>
Saos-2 M4r5[ZFJXFNiYYPzZZk> M{TKTJFJXFNib3[gdIVlcWG2cnnjJINidmOncjDj[YxtKGyrbnXzJJRwKGmmZX70bYZ6KG23bITpdIxmKG:ycH;yeJVvcXSrZYOg[o9zKGS{dXegdoVxfXKyb4Ppcoc7KEOxbn\pdo1ifG:{eTDzZ5Jm\W5iZn;yJHNid3NvMjDj[Yxtew>? NF;PeY09[SC2YYLn[ZQ:L1:kbHHub{chcHKnZk2nbJR1eHN8Lz;weYJu\WRwbnPibU5vdG1wbnnoModwfi9{OUSzOVE{QSd-Mkm0N|UyOzl:L3G+
SK-N-SH MYDxTHRUKGG|c3H5 MlXzdWhVWyCxZjDw[YRq[XS{aXOgZ4Fv[2W{IHPlcIwhdGmwZYOgeI8hcWSnboTp[pkhdXWudHnwcIUhd3Cyb4L0eY5qfGmnczDmc5Ih\HK3ZzDy[ZB2enCxc3nu[|ohS2:wZnnycYF1d3K7IIPjdoVmdiCob4KgV2suVi2VSDDj[Yxtew>? M1jSZVxiKHSjcnfleF0oZ2KuYX7rK{BpemWoPTfoeJRxezpxL4D1Zo1m\C6wY3LpMo5tdS6waXiu[493NzJ7NEO1NVM6Lz5{OUSzOVE{QTxxYU6=
In vivo Ispinesib (4.5 mg/kg–15 mg/kg) exhibits inhibitory effects against Colo205, Colo201, HT-29, but not MX-1 cells, in mouse xenograft models. SB-715992 (6 mg/kg–10 mg/kg ) also inhibits murine solid tumors, including Madison 109 lung carcinoma, M5076 sarcoma, as well as L1210 and P388 leukemias. [2] In mice xenograft models of breast cancer cells MCF-7, HCC1954, MDA-MB-468, and KPL4, Ispinesib (8 mg/kg–10 mg/kg) inhibits tumor growth. [4]

Protocol (from reference)

Kinase Assay:[1]
  • Steady-State Kinetic Analysis of Human KSP ATPase Activity and Inhibition by Ispinesib:

    Kinesin specificity analysis is carried out using a pyruvate kinase-lactate dehydrogenase detection system that couples the production of ADP to oxidation of NADH. Absorbance changes are monitored at 340 nm. Steady-state studies using nanomolar concentrations of KSP are performed using a sensitive fluorescence-based assay utilizing a pyruvate kinase, pyruvate oxidase, and horseradish peroxidase (HRP) coupled detection system that couples the generation of ADP to oxidation of Amplex Red to fluorescent resorufin. Generation of resorufin is monitored by fluorescence (λexcitation = 520 nm and λemission = 580 nm). Steady-state biochemical experiments are performed in PEM25 buffer [25 mM Pipes-K+ (pH 6.8), 2 mM MgCl2, 1 mM EGTA] supplemented with 10 µM paclitaxel for experiments involving microtubules. The IC50 for steady-state inhibition is determined at 500 µM ATP, 5 µM Microtubules, and 1 nM KSP in PEM25 buffer. Ki app (apparent inhibitor dissociation constant) values of Ispinesib are extracted from the dose-response curves, with explicit correction for enzyme concentration by using the Morrison equation. Inhibitor modality (e.g., competitive, noncompetitive, uncompetitive, or mixed) under steady-state conditions is determined by measuring the effect of inhibitor concentration on initial velocity as a function of substrate concentrations. Data are fit using equations in GraFit to velocity equations for the various modes of inhibition.

Cell Research:[4]
  • Cell lines: Breast cancer cells, including MCF-7, HCC1954, MDA-MB-468, and KPL4
  • Concentrations: 0.085 nM–33 µM
  • Incubation Time: 72 hours
  • Method: Cells are plated in log phase of growth in 96-well plates and treated with Ispinesib for 72 hours. Then, cell growth is measured using CellTiter-Glo, and luminescence is detected using BioTek FLx800. Data are analyzed and the IC50 value, defined as the drug concentration that results in 50% growth inhibition relative to control, is calculated.
  • (Only for Reference)
Animal Research:[4]
  • Animal Models: Nude (nu/nu) mice models of MCF7, KPL4, and HCC1954 cells; severe combined immunodeficient (SCID) mice model of MDA-MB-468 cells;
  • Dosages: 10 mg/kg for nude mice or 8 mg/kg for SCID mice
  • Administration: Intraperitoneal injection on a q4d× schedule (3 doses, every 4 day
  • (Only for Reference)

Solubility (25°C)

In vitro

DMSO 103 mg/mL
(199.2 mM)
Ethanol 103 mg/mL
(199.2 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 517.06
Formula

C30H33ClN4O2

CAS No. 336113-53-2
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC1=CC=C(C=C1)C(=O)N(CCCN)C(C2=NC3=C(C=CC(=C3)Cl)C(=O)N2CC4=CC=CC=C4)C(C)C

In vivo Formulation Calculator (Clear solution)

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

mg/kg g μL

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
%DMSO %

Calculation results:

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.

Molarity Calculator

Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Interventions Conditions Sponsor/Collaborators Start Date Phases
NCT00607841 Terminated Drug: Ispinesib Breast Neoplasms Cytokinetics December 2007 Phase 1
NCT00354250 Completed Drug: ispinesib Recurrent Renal Cell Cancer|Stage III Renal Cell Cancer|Stage IV Renal Cell Cancer National Cancer Institute (NCI) May 2006 Phase 2
NCT00097409 Completed Drug: Ispinesib Ovarian Cancer GlaxoSmithKline December 2004 Phase 2
NCT00119171 Completed Drug: Ispinesib|Drug: Capecitabine Solid Tumor Cancer GlaxoSmithKline November 2004 Phase 1

(data from https://clinicaltrials.gov, updated on 2022-01-17)

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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