L-Cycloserine - CAS 339-72-0
Catalog number: 339-72-0
Category: Inhibitor
Please be kindly noted products are not for therapeutic use. We do not sell to patients.
Molecular Formula:
C3H6N2O2
Molecular Weight:
102.09
COA:
Inquire
Targets:
GABA Receptor
Description:
L-Cycloserine is excitatory amino acid, an antibiotic effective against Mycobacterium tuberculosis.
Purity:
≥98%
Appearance:
White to off-white powder
Synonyms:
(S)-4-Amino-3-isoxazolidone;
Solubility:
Soluble in water.
Storage:
Store at 2-8 °C
MSDS:
Inquire
Application:
Inhibitor of ketosphinganine synthase, leading to blockade of sphingosine biosynthesis.
Quality Standard:
Enterprise Standard
Shelf Life:
As supplied, 2 years from the QC date provided on the Certificate of Analysis, when stored properly
Quantity:
Milligrams-Grams
Melting Point:
>146 °C
InChIKey:
DYDCUQKUCUHJBH-REOHCLBHSA-N
InChI:
1S/C3H6N2O2/c4-2-1-7-5-3(2)6/h2H,1,4H2,(H,5,6)/t2-/m0/s1
Canonical SMILES:
C1C(C(=O)NO1)N
Current Developer:
Lilly
1.Accumulation of ceramide in slow-twitch muscle contributes to the development of insulin resistance in the obese JCR:LA-cp rat.
Fillmore N1,2, Keung W2, Kelly SE2,3, Proctor SD2,3, Lopaschuk GD1,2,3, Ussher JR1,3,4. Exp Physiol. 2015 Jun;100(6):730-41. doi: 10.1113/EP085052. Epub 2015 May 14.
NEW FINDINGS: What is the central question of this study? The aim was to determine whether the accumulation of ceramide contributes to skeletal muscle insulin resistance in the JCR obese rat. What is the main finding and its importance? Our main new finding is that ceramides accumulate only in slow-twitch skeletal muscle in the JCR obese rat and that reducing ceramide content in this muscle type by inhibition of serine palmitoyl transferase-1 halts the progression of insulin resistance in this rat model predisposed to early development of type 2 diabetes. Our findings highlight the importance of assessing insulin signalling/sensitivity and lipid intermediate accumulation in different muscle fibre types. It has been postulated that insulin resistance results from the accumulation of cytosolic lipid metabolites (i.e. diacylglycerol/ceramide) that impede insulin signalling and impair glucose homeostasis. De novo ceramide synthesis is catalysed by serine palmitoyl transferase-1.
2.Stearoyl-CoA desaturase-1 mediated cell apoptosis in colorectal cancer by promoting ceramide synthesis.
Chen L1,2, Ren J1, Yang L1,3, Li Y1, Fu J1, Li Y1, Tian Y4, Qiu F4, Liu Z1, Qiu Y1. Sci Rep. 2016 Jan 27;6:19665. doi: 10.1038/srep19665.
Inhibition of stearoyl-CoA desaturase 1 (SCD1) has been found to effectively suppress tumor cell proliferation and induce apoptosis in numerous neoplastic lesions. However, mechanism underlying SCD1-mediated anti-tumor effect has maintained unclear. Herein, we reported endo-lipid messenger ceramides played a critical role in tumor fate modulated by SCD1 inhibition. In vitro study in colorectal cancer cells demonstrated inhibition of SCD1 activity promoted apoptosis attributed to mitochondria dysfunctions, upregulation of reaction oxygen species (ROS), alteration of mitochondrial transmembrane potential and translocation of mitochondrial protein cytochrome C. While these effects were mediated by intracellular ceramide signals through induction of ceramide biosynthesis, rather than exclusive SFA accumulation. In vivo study in xenograft colorectal cancer mice showed pharmacologic administration of SCD1 inhibitor A939 significantly delayed tumor growth, which was reversed by L-cycloserine, an inhibitor of ceramide biosynthesis.
3.Resveratrol induced ER expansion and ER caspase-mediated apoptosis in human nasopharyngeal carcinoma cells.
Chow SE1, Kao CH, Liu YT, Cheng ML, Yang YW, Huang YK, Hsu CC, Wang JS. Apoptosis. 2014 Mar;19(3):527-41. doi: 10.1007/s10495-013-0945-0.
Autophagy and endoplasmic reticulum (ER) stress response is important for cancer cells to maintain malignancy and resistance to therapy. trans-Resveratrol (RSV), a non-flavonoid agent, has been shown to induce apoptosis in human nasopharyngeal carcinoma (NPC) cells. In this study, the involvements of tumor-specific ER stress and autophagy in the RSV-mediated apoptosis were investigated. In addition to traditional autophagosomes, the images of transmission electron microscopy (TEM) indicated that RSV markedly induced larger, crescent-shaped vacuoles with single-layered membranes whose the expanded cisternae contains multi-lamellar membrane structures. Prolonged exposure to RSV induced a massive accumulation of ER expansion. Using an EGFP-LC3B transfection and confocal laser microscopy approach, we found RSV-induced EGFP-LC3 puncta co-localized with ER-tracker red dye, implicating the involvement of LC3II in ER expansion. The proapoptotic effect of RSV was enhanced after suppression of autophagy by ATG7 siRNA or blocking the autophagic flux by bafilomycin A1, but that was not changed after targeted silence of IRE1 or CHOP by siRNA.
4.Thirty years beyond discovery--clinical trials in succinic semialdehyde dehydrogenase deficiency, a disorder of GABA metabolism.
Vogel KR1, Pearl PL, Theodore WH, McCarter RC, Jakobs C, Gibson KM. J Inherit Metab Dis. 2013 May;36(3):401-10. doi: 10.1007/s10545-012-9499-5. Epub 2012 Jun 28.
This review summarizes a presentation made at the retirement Symposium of Prof. Dr. Cornelis Jakobs in November of 2011, highlighting the progress toward clinical trials in succinic semialdehyde dehydrogenase (SSADH) deficiency, a disorder first recognized in 1981. Active and potential clinical interventions, including vigabatrin, L-cycloserine, the GHB receptor antagonist NCS-382, and the ketogenic diet, are discussed. Several biomarkers to gauge clinical efficacy have been identified, including cerebrospinal fluid metabolites, neuropsychiatric testing, MRI, EEG, and measures of GABAergic function including (11 C)flumazenil positron emission tomography (PET) and transcranial magnetic stimulation (TMS). Thirty years after its discovery, encompassing extensive studies in both patients and the corresponding murine model, we are now running an open-label trial of taurine intervention, and are poised to undertake a phase II trial of the GABAB receptor antagonist SGS742.
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Chemical Structure

CAS 339-72-0 L-Cycloserine

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