Lactimidomycin
目录号 : GC62720
Lactimidomycin 是从链霉菌中分离出的含戊二酰亚胺的化合物。Lactimidomycin 是一种有效的真核翻译延伸抑制剂，对肿瘤细胞系具有有效的抗增殖作用，并选择性抑制蛋白质翻译。Lactimidomycin 抑制蛋白质合成，IC50 值为 37.82 nM。Lactimidomycin 还是登革热病毒 2 和其他 RNA 病毒的有效且无毒的抑制剂。抗癌和抗病毒活性。
Cas No.:134869-15-1
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >99.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
Lactimidomycin is a glutarimide-containing compound isolated from Streptomyces. Lactimidomycin is a potent inhibitor of eukaryotic translation elongation. Lactimidomycin has a potent antiproliferative effect on tumor cell lines and selectively inhibit protein translation. Lactimidomycin inhibits protein synthesis with an IC50 value of 37.82 nM. Lactimidomycin is also a potent and non-toxic inhibitor of dengue virus 2 and other RNA viruses. Anticancer and antiviral activities[1][2].
Lactimidomycin (0.01-100 nM; 24 hours; Hs 579T, HCC 1937, HCC 1395, HCC 2218, BT 474, MCF 7, MDA MB231 cells and MCF 10A) treatment inhibits cell growth with IC50 concentrations in the low nanomolar range, but higher doses are necessary to inhibit growth of the non-tumorigenic breast cell line MCF10A[1].Lactimidomycin induces a clear dose-responsive inhibition of DENV2 infectious particle production with an EC90 value of 0.4 μM. No measurable decrease in cell viability was detected at concentrations up to 12.5 µM[2].Lactimidomycin is a potent inhibitor of DENV2 and Lactimidomycin’s inhibition of DENV2 translation leads to reduced production of newly infectious particles. Lactimidomycin may protect cells from viral cytopathic effects including apoptosis, likely through inhibition of virus protein production and replication[2].
Lactimidomycin (0.6 mg/kg; intraperitoneal injection; daily; for one month; female nude mice) treatment has an appreciable effect on tumor growth in nude mice[1].
[1]. Schneider-Poetsch T, et al. Inhibition of eukaryotic translation elongation by cycloheximide and lactimidomycin. Nat Chem Biol. 2010 Mar;6(3):209-217.
[2]. Carocci M, et al. Lactimidomycin is a broad-spectrum inhibitor of dengue and other RNA viruses. Antiviral Res. 2016 Apr;128:57-62.
| Cas No. | 134869-15-1 | SDF | |
| 分子式 | C26H35NO6 | 分子量 | 457.56 |
| 溶解度 | DMSO : 5.72 mg/mL (12.50 mM; Need ultrasonic and warming) | 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 | 2.1855 mL | 10.9275 mL | 21.8551 mL |
| 5 mM | 0.4371 mL | 2.1855 mL | 4.371 mL |
| 10 mM | 0.2186 mL | 1.0928 mL | 2.1855 mL |
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| 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 |
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| % 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。
Inhibition of eukaryotic translation elongation by cycloheximide and Lactimidomycin
Nat Chem Biol 2010 Mar;6(3):209-217.PMID:20118940DOI:10.1038/nchembio.304.
Although the protein synthesis inhibitor cycloheximide (CHX) has been known for decades, its precise mechanism of action remains incompletely understood. The glutarimide portion of CHX is seen in a family of structurally related natural products including migrastatin, isomigrastatin and Lactimidomycin (LTM). We found that LTM, isomigrastatin and analogs have a potent antiproliferative effect on tumor cell lines and selectively inhibit translation. A systematic comparative study of the effects of CHX and LTM on protein synthesis revealed both similarities and differences between the two inhibitors. Both LTM and CHX were found to block the translocation step in elongation. Footprinting experiments revealed protection of a single cytidine nucleotide (C3993) in the E-site of the 60S ribosomal subunit, thus defining a common binding pocket for the two inhibitors in the ribosome. These results shed new light on the molecular mechanism of inhibition of translation elongation by both CHX and LTM.
Lactimidomycin is a broad-spectrum inhibitor of dengue and other RNA viruses
Antiviral Res 2016 Apr;128:57-62.PMID:26872864DOI:10.1016/j.antiviral.2016.02.005.
Dengue virus, a member of the Flaviviridae family, is a mosquito-borne pathogen and the causative agent of dengue fever. Despite the nearly 400 million new infections estimated annually, no vaccines or specific antiviral therapeutics are currently available. We identified Lactimidomycin (LTM), a recently established inhibitor of translation elongation, as a potent inhibitor of dengue virus 2 infection in cell culture. The antiviral activity is observed at concentrations that do not affect cell viability. We show that Kunjin virus and Modoc virus, two other members of the Flavivirus genus, as well as vesicular stomatitis virus and poliovirus 1, are also sensitive to LTM. Our findings suggest that inhibition of translation elongation, an obligate step in the viral replication cycle, may provide a general antiviral strategy against fast-replicating RNA viruses.
Synthesis and Biological Evaluation of Lactimidomycin and Its Analogues
Chemistry 2015 Dec 21;21(52):19159-67.PMID:26577990DOI:10.1002/chem.201503527.
The studies culminating in the total synthesis of the glutarimide-containing eukaryote translation elongation inhibitor Lactimidomycin are described. The optimized synthetic route features a Zn(II)-mediated intramolecular Horner-Wadsworth-Emmons (HWE) reaction resulting in a highly stereoselective formation of the strained 12-membered macrolactone of Lactimidomycin on a 423 mg scale. The presence of the E,Z-diene functionality was found to be key for effective macrocyclizations as a complete removal of these unsaturation units resulted in exclusive formation of the dimer rather than monocyclic enoate. The synthetic route features a late-stage installation of the glutarimide functionality via an asymmetric catalytic Mukaiyama aldol reaction, which allows for a quick generation of Lactimidomycin homolog 55 containing two additional carbons in the glutarimide side chain. Similar to Lactimidomycin, this analog was found to possess cytotoxicity against MDA-MB-231 breast cancer cells (GI50 =1-3 μM) using in vitro 2D and 3D assays. Although Lactimidomycin was found to be the most potent compound in terms of anticancer activity, 55 as well as truncated analogues 50-52 lacking the glutarimide side-chain were found to be significantly less toxic against human mammary epithelial cells.
Lactimidomycin, iso-migrastatin and related glutarimide-containing 12-membered macrolides are extremely potent inhibitors of cell migration
J Am Chem Soc 2009 Feb 4;131(4):1370-1.PMID:19132897DOI:10.1021/ja808462p.
Migrastatin (1), iso-migrastatin (5) and Lactimidomycin (7) are all glutarimide-containing polyketides known for their unique structures and cytotoxic activities against human cancer cell lines. Migrastatin, a strong inhibitor of tumor cell migration, has been an important lead in the development of antimetastatic agents. Yet studies of the related 12-membered macrolides iso-migrastatin, Lactimidomycin, and related analogues have been hampered by their limited availability. We report here the production, isolation, structural characterization, and biological activities of iso-migrastatin, Lactimidomycin, and 23 related congeners. Our studies showed that, as a family, the glutarimide-containing 12-membered macrolides are extremely potent cell migration inhibitors with some members displaying activity on par or superior to that of migrastatin as exemplified by compounds 5, 7, and 9-12. On the basis of these findings, the structures and activity of this family of compounds as cell migration inhibitors are discussed.
Overproduction of Lactimidomycin by cross-overexpression of genes encoding Streptomyces antibiotic regulatory proteins
Appl Microbiol Biotechnol 2016 Mar;100(5):2267-77.PMID:26552797DOI:10.1007/s00253-015-7119-7.
The glutarimide-containing polyketides represent a fascinating class of natural products that exhibit a multitude of biological activities. We have recently cloned and sequenced the biosynthetic gene clusters for three members of the glutarimide-containing polyketides-iso-migrastatin (iso-MGS) from Streptomyces platensis NRRL 18993, Lactimidomycin (LTM) from Streptomyces amphibiosporus ATCC 53964, and cycloheximide (CHX) from Streptomyces sp. YIM56141. Comparative analysis of the three clusters identified mgsA and chxA, from the mgs and chx gene clusters, respectively, that were predicted to encode the PimR-like Streptomyces antibiotic regulatory proteins (SARPs) but failed to reveal any regulatory gene from the ltm gene cluster. Overexpression of mgsA or chxA in S. platensis NRRL 18993, Streptomyces sp. YIM56141 or SB11024, and a recombinant strain of Streptomyces coelicolor M145 carrying the intact mgs gene cluster has no significant effect on iso-MGS or CHX production, suggesting that MgsA or ChxA regulation may not be rate-limiting for iso-MGS and CHX production in these producers. In contrast, overexpression of mgsA or chxA in S. amphibiosporus ATCC 53964 resulted in a significant increase in LTM production, with LTM titer reaching 106 mg/L, which is five-fold higher than that of the wild-type strain. These results support MgsA and ChxA as members of the SARP family of positive regulators for the iso-MGS and CHX biosynthetic machinery and demonstrate the feasibility to improve glutarimide-containing polyketide production in Streptomyces strains by exploiting common regulators.