SJG-136 (NSC-694501)
(Synonyms: NSC-694501) 目录号 : GC34086
SJG-136 (NSC-694501) 是一种 DNA 交联剂，对于 pBR322 DNA 的 XL50 为 45 nM。 SJG-136 (NSC-694501) 具有有效的抗肿瘤活性。
Cas No.:232931-57-6
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Cell experiment: | In vitro cytotoxicity is evaluated using the human ovarian carcinoma cell lines SKOV-3, A2780, and CH1, together with the cisplatin-resistant counterparts of the A2780 and CH1 lines (A2780cisR and CH1cisR, respectively). Viable cells are seeded in growth medium (160 μL) into 96-well microtiter plates and allowed to attach overnight. SJG-136 is dissolved in DMSO (to give a 20 mM concentration in each case) immediately prior to adding to the cells in quadruplicate wells. Final drug concentrations in the wells ranged from 100 μM to 2.5 nM as follows: 100, 25, 10, 2.5, 1 μM, and 250, 100, 25, 10, 2.5 nM. This is achieved by diluting the drugs in growth medium and then adding 40 μL to the existing well volume of 160 μL to give the final concentrations stated above. After 4 days (96 h), the medium is removed and the remaining cells are fixed using 10% trichloroacetic acid on ice for 30 min. Wells are then washed 3−4 times with tap water and air-dried overnight, and 100 μL of 0.4% sulforhodamine B (dissolved in 1% glacial HOAc) is added to each well. Staining is allowed to continue for 10−15 min; the wells are then washed 3−4 times with 1% acetic acid and air-dried, and Tris base (100 μL of 10 mM) is added to each one. The plates are then shaken and absorbance readings taken at 540 nm using a plate reader. From plots of concentration versus percentage absorbance (compared to 8 untreated wells), IC50 values are calculated using the Quattro-Pro software package[1]. |
Animal experiment: | A homogenous suspension of 5 × 106 exponentially growing canine melanoma cells in serum free RPMI 1640 tissue culture medium is injected subcutaneously into CD1 Nu/Nu immunocompromised female mice. The mice are divided into five groups of ten mice, with equivalent mean tumour volumes for each group. SJG-136 is given intravenously into the tail vein to four of these groups and vehicle control is administered to the fifth group. SJG-136 injections are prepared in 0.9 % NaCl and 1 % DMSO vehicle. Animals are weighed prior to the injection to determine the volume of SJG-136 required (0.1 mL/10 g body weight) which is given IV in the tail vein. Control group mice are given an IV injection of the vehicle solution; mice in groups one and two are given a single treatment of SJG-136, 0.15 mg/kg and 0.30 mg/kg respectively; mice in groups four and five are given 0.15 mg/kg and 0.30 mg/kg respectively, every seven days for a total of three treatments[2]. |
References: [1]. Gregson SJ, et al. Design, synthesis, and evaluation of a novel pyrrolobenzodiazepine DNA-interactive agent with highly efficient cross-linking ability and potent cytotoxicity. J Med Chem. 2001 Mar 1;44(5):737-48. | |
SJG-136 is a DNA cross-linking agent, with an XL50 of 45 nM for pBR322 DNA; SJG-136 has potent antitumor activity.
SJG-136 (dimer 5) is a DNA cross-linking agent, with an XL50 (concentration of agent required for 50% cross-linking of pBR322 DNA) of 45 nM for pBR322 DNA. SJG-136 is cytotoxic to ovarian cell lines, such as A2780 (IC50, 22.5 pM), A2780cisR (IC50, 24 pM), CH1 (IC50, 0.12 nM), CH1cisR (IC50, 0.6 nM), and SKOV-3 (IC50, 9.1 nM)[1]. SJG-136 (SG2000) also reduces the viability of a panel of canine cancer cells, with GI50 values ranging from 0.33 - >100 nM after a 1 h exposure, and <0.03 - 17.33 nM following continuous exposure[2].
SJG-136 shows more potent antitumor effect against CMeC-1 tumour at 0.30 mg/kg than 0.15 mg/kg either as a single dose or administered once a week for three weeks via dosed intravenously in mice. SJG-136-induced H2AX phosphorylation shows good correspondence, but less sensitivity, than measurement of foci[2].
[1]. Gregson SJ, et al. Design, synthesis, and evaluation of a novel pyrrolobenzodiazepine DNA-interactive agent with highly efficient cross-linking ability and potent cytotoxicity. J Med Chem. 2001 Mar 1;44(5):737-48. [2]. Mellinas-Gomez M, et al. Activity of the DNA minor groove cross-linking agent SG2000 (SJG-136) against canine tumours. BMC Vet Res. 2015 Aug 19;11:215.
| Cas No. | 232931-57-6 | SDF | |
| 别名 | NSC-694501 | ||
| Canonical SMILES | O=C1N2[C@@H](CC(C2)=C)C=NC3=CC(OCCCOC4=C(OC)C=C(C(N(CC(C5)=C)[C@@H]5C=N6)=O)C6=C4)=C(OC)C=C31 | ||
| 分子式 | C31H32N4O6 | 分子量 | 556.61 |
| 溶解度 | DMSO: ≥ 100 mg/mL (179.66 mM) | 储存条件 | Store at -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 1.7966 mL | 8.983 mL | 17.9659 mL |
| 5 mM | 0.3593 mL | 1.7966 mL | 3.5932 mL |
| 10 mM | 0.1797 mL | 0.8983 mL | 1.7966 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
SJG-136 (NSC 694501), a novel rationally designed DNA minor groove interstrand cross-linking agent with potent and broad spectrum antitumor activity: part 1: cellular pharmacology, in vitro and initial in vivo antitumor activity
Cancer Res 2004 Sep 15;64(18):6693-9.PMID:15374986DOI:10.1158/0008-5472.CAN-03-2941.
SJG-136 (NSC 694501) is a rationally designed pyrrolobenzodiazepine dimer that binds in the minor groove of DNA. It spans 6 bp with a preference for binding to purine-GATC-pyrimidine sequences. The agent has potent activity in the National Cancer Institute (NCI) anticancer drug screen with 50% net growth inhibition conferred by 0.14 to 320 nmol/L (7.4 nmol/L mean). Sensitive cell lines exhibit total growth inhibition and 50% lethality after treatment with as little as 0.83 and 7.1 nmol/L SJG-136, respectively. COMPARE and molecular target analysis of SJG-136 data versus that of >60,000 compounds tested in the NCI 60 cell line screen shows that, although the agent has similarity to other DNA binding agents, the pattern of activity for SJG-136 does not fit within the clusters of any known agents, suggesting that SJG-136 possesses a distinct mechanism of action. Testing in the NCI standard hollow fiber assay produced prominent growth inhibition in 20 of 24 i.p. and 7 of 24 s.c. test combinations with 5 of 12 cell lines exhibiting cell kill. In addition, SJG-136 produced antitumor activity in mice bearing CH1 and CH1cisR xenografts, a cisplatin-resistant human ovarian tumor model, and also in mice bearing LS174T xenografts, a human colon tumor model. SJG-136 produces DNA interstrand cross-links between two N-2 guanine positions on opposite strands and separated by 2 bp. In human tumor cell lines, the cross-links form rapidly and persist compared with those produced by conventional cross-linking agents such as nitrogen mustards. In mice bearing the LS174T human colon xenograft, DNA interstrand cross-links can be detected in tumor cells using a modification of the single cell gel electrophoresis (comet) assay after administration of a therapeutic dose. Cross-links in the tumor increase with dose and are clearly detectable at 1 hour after i.v. administration. The level of cross-linking persists over a 24-hour period in this tumor in contrast to cross-links produced by conventional cross-linking agents observed over the same time period.
SJG-136 (NSC 694501), a novel rationally designed DNA minor groove interstrand cross-linking agent with potent and broad spectrum antitumor activity: part 2: efficacy evaluations
Cancer Res 2004 Sep 15;64(18):6700-6.PMID:15374987DOI:10.1158/0008-5472.CAN-03-2942.
Pyrrolo[2,1-c][1,4]benzodiazepine dimer SJG-136 (NSC 694501) selectively cross-links guanine residues located on opposite strands of DNA, and exhibits potent in vitro cytotoxicity. In addition, SJG-136 is highly active in vivo in hollow fiber assays. In the current investigation, SJG-136 was evaluated for in vivo efficacy in 10 tumor models selected on the basis of sensitivity of cells grown in the hollow fiber and in vitro time course assays: LOX IMVI and UACC-62 (melanomas); OVCAR-3 and OVCAR-5 (ovarian carcinomas); MDA-MB-435 (breast carcinoma); SF-295 and C-6 (gliomas); LS-174T (colon carcinoma); HL-60 TB (promyelocytic leukemia); and NCI-H522 (lung carcinoma). SJG-136 was active against small (150 mg) and large (250-400 mg) xenografts with tumor mass reductions in all 10 models. In addition, significant growth delays occurred in nine models, cell kill in six models ranged between 1.9 and 7.2 logs, and there were 1 to 4/6 tumor-free responses in six models. SJG-136 is active following i.v. bolus injections, as well as by 5-day continuous infusions. Of all of the schedules tested, bolus administrations for 5 consecutive days (qd x 5) conferred the greatest efficacy. SJG-136 is active over a wide dosage range in athymic mouse xenografts: on a qd x 5 schedule, the maximum-tolerated dose was approximately 120 microg/kg/dose (total dose: 0.6 mg/kg = 1.8 mg/m2) and the minimum effective dose in the most sensitive model (SF-295) was approximately 16 microg/kg/dose (total dose: 0.08 mg/kg = 0.24 mg/m2). Results of this study extend the initial in vivo observations reported in the reference above and confirm the importance of expediting more detailed preclinical evaluations on this novel agent in support of phase I clinical trials in the United Kingdom and the United States, which are planned to commence shortly.
A phase I trial of SJG-136 (NSC#694501) in advanced solid tumors
Cancer Chemother Pharmacol 2010 Apr;65(5):833-8.PMID:19672598DOI:10.1007/s00280-009-1088-4.
Purpose: SJG-136 is a pyrrolobenzodiazepine dimer that forms DNA crosslinks and has demonstrated broad antitumor activity. We undertook this trial to determine the maximum-tolerated dose (MTD), toxicities and pharmacokinetic (PK) profile of SJG-136 in patients with an advanced solid tumor. Patients and methods: In this phase I study, patients were treated with SJG-136 on days 1, 8 and 15 of a 28-day cycle. Dose levels studied were 10, 20, 40 and 60 microg/m2. PK parameters of SJG-136 were assessed following the intravenous administration of SJG-136 on days 1 and 15 of cycle 1. Results: Twenty-one patients with advanced solid tumors were treated. Patients had a median of two prior chemotherapy regimens. Fatigue was dose-limiting with SJG-136 60 microg/m2/day administered on days 1, 8 and 15 of a 28-day cycle. Grade 3 thrombocytopenia and delayed onset liver toxicity were seen in one patient each. PK parameters of SJG-136 indicated dose-proportional increases in systemic exposure with increasing doses. No objective responses were seen. Conclusion: For patients with advanced solid tumors, the MTD of SJG-136 is 40 microg/m2/day administered on days 1, 8 and 15 of a 28-day cycle. The major dose limiting toxicity was fatigue. Alternative dosing strategies are now being evaluated.
Time-dependent cytotoxicity induced by SJG-136 (NSC 694501): influence of the rate of interstrand cross-link formation on DNA damage signaling
Mol Cancer Ther 2006 Jun;5(6):1602-9.PMID:16818520DOI:10.1158/1535-7163.MCT-06-0018.
SJG-136 is a new pyrrolobenzodiazepine dimer inducing time-dependent cytotoxicity. HCT 116 cells were exposed to 50 nmol/L of SJG-136 for 1 hour or 1 nmol/L of SJG-136 for 24 hours to achieve similar levels of interstrand cross-links (ICL). The short exposure led to a rapid formation of ICLs (1 hour), early H2AX foci formation (4 hours), prominent S phase arrest, and greater phosphorylation of Nbs1 (on serine 343) and Chk1 (on serine 317) than a 24-hour exposure. The prolonged exposure at low concentrations of SJG-136 induced a gradual formation of ICLs (up to 24 hours) which was associated with a limited S phase arrest and delayed Nbs1 phosphorylation. Prolonged exposure was also associated with a reduced phosphorylation of p53 on serines 15 and 20, a limited and delayed phosphorylation on serine 392, and a less prominent increase in p21 levels. These data suggest that the 24-hour exposure to a low concentration of SJG-136 led to delayed and reduced DNA damage signaling compared with a higher concentration of SJG-136 for 1 hour, resulting in greater cytotoxicity and contributing to the time-dependent cytotoxic effect of SJG-136.
Preliminary pharmacokinetic and bioanalytical studies of SJG-136 (NSC 694501), a sequence-selective pyrrolobenzodiazepine dimer DNA-cross-linking agent
Invest New Drugs 2004 Aug;22(3):231-40.PMID:15122070DOI:10.1023/B:DRUG.0000026249.97007.60.
SJG-136 is a synthetic pyrrolobenzodiazepine (PBD) dimer in which two DNA-alkylating subunits are linked through an inert propanedioxy tether. Biophysical and biochemical studies of SJG-136 have shown a remarkable affinity for DNA and potent cytotoxicity in vitro. On this basis, together with its unique sequence selectivity and interstrand DNA cross-linking activity, SJG-136 has been selected for clinical trials. This study examines the pharmacological characteristics of SJG-136 and provides the first report of pharmacokinetic properties for this agent. A sensitive, selective and reproducible reversed-phase gradient LC/MS assay has been developed for detection and analysis, where a molecular ion ( m / z 557.2) is detectable for the SJG-136 parent imine. Fluorescence detection (260 nm excitation, 420 nm emission) gives a limit of sensitivity of 5 nM (2.5 ng ml(-1)) for analysis of SJG-136 in mouse plasma. Extraction efficiencies from plasma were >65% across a range of concentrations (5-1000 nM). Following administration to mice at the MTD (i.p., 0.2 mg kg(-1)), high peak plasma concentrations of SJG-136 were seen ( C (max) = 336 nM) at 30 min after dosing. A calculated terminal t (1/2) of 0.98 h and AUC of 0.34 microM.h resulted in a clearance rate of 17.7 ml min(-1) kg(-1). The PBD dimer binds only moderately to proteins (65-75%), and in vitro cytotoxicity studies confirmed IC(50) values of 4-30 nM with a panel of human cell lines. This finding demonstrates that plasma concentrations achieved in the mouse are substantially higher than those required to elicit an anti tumour response in vitro. This report forms an important phase in the pre-clinical characterization of the compound.