M5379
L-Methionine sulfoximine
suitable for cell culture
Synonym(s):
L-S-(3-Amino-3-carboxypropyl)-S-methylsulfoximine
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All Photos(5)
About This Item
Linear Formula:
CH3S(O)(=NH)CH2CH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
180.23
Beilstein:
6175446
MDL number:
UNSPSC Code:
12352116
PubChem Substance ID:
NACRES:
NA.32
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technique(s)
cell based assay: suitable
cell culture | mammalian: suitable
mp
>210 °C (dec.) (lit.)
suitability
suitable for molecular biology
SMILES string
CS(=N)(=O)CC[C@H](N)C(O)=O
InChI
1S/C5H12N2O3S/c1-11(7,10)3-2-4(6)5(8)9/h4,7H,2-3,6H2,1H3,(H,8,9)/t4-,11?/m0/s1
InChI key
SXTAYKAGBXMACB-DPVSGNNYSA-N
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Application
L-Methionine sulfoximine has been used as a potent inhibitor of glutamine synthetase (GS) activityto study its effect on the lifespan and disease progression in the SOD1 G93A mouse model for amyotrophic lateral sclerosis.
Use of high levels of MSX can enhance productivity and production stability in multiple recombinant GS CHO cell lines and GS–CHOK1SV cell lines without compromising product quality. These findings have important implications for improving the efficiency and reliability of industrial cell culture processes used in the production of biologics.
MSX, a potent convulsant, has shown a specific and significant impact on glutamine dynamics in primary cortical astrocyte cultures. This makes it a valuable compound for studying and modulating glutamine-related processes in cell culture.
Use of high levels of MSX can enhance productivity and production stability in multiple recombinant GS CHO cell lines and GS–CHOK1SV cell lines without compromising product quality. These findings have important implications for improving the efficiency and reliability of industrial cell culture processes used in the production of biologics.
MSX, a potent convulsant, has shown a specific and significant impact on glutamine dynamics in primary cortical astrocyte cultures. This makes it a valuable compound for studying and modulating glutamine-related processes in cell culture.
Biochem/physiol Actions
As a potent inhibitor of glutamine synthetase activity (GS), this reagent has widely been used as a selection agent for plasmid integration in Chinese hamster ovary (CHO) and other mammalian cell lines. The growing demand for high yield cell banks for production of recombinant proteins for therapeutics has resulted in two major systems for selection of stable and active clones, Methotrexate selection of dihydrofolate reductase (DHFR) overexpressing cells and MSX selection of glutamine synthetase overexpressing cells. Cells are grown in the absence of glutamine in the media and inhibition of the endogenous activity of glutamine synthetase results in cell death for cells lacking overexpression. The MSX-glutamine synthetase selection mechanism provides benefits over that of the Methotrexate-DHFR system in that it typically requires a single amplification step and results in significant reduction of time to produce high stability, highly amplified clones. L-Methionine sulfoximine (MSX) enhances NH3 production in seedling leaves wheat, barley, corn and sorghum plants by inhibiting GS activity. MSX increases ornithine decarboxylase activity and decreases the survival rate in a model of transient cerebral ischemia.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Certificates of Analysis (COA)
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Current pharmaceutical biotechnology, 11(3), 233-240 (2010-03-10)
Mammalian cell lines are important host cells for the industrial production of pharmaceutical proteins owing to their capacity for correct folding, assembly and post-translational modification. In particular, Chinese hamster ovary (CHO) cells are the most dependable host cells for the
L-methionine-DL-sulfoximine induces massive efflux of glutamine from cortical astrocytes in primary culture
Albrecht J and Norenberg MD, et al.
European journal of psychotraumatology, 182(3), 587-589 (1990)
Increased MSX level improves biological productivity and production stability in multiple recombinant GS CHO cell lines
Tian Jun, et al.
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Davina Chai et al.
Journal of biotechnology, 131(4), 466-472 (2007-09-11)
A key challenge in molecular breeding of orchids is the creation of efficient and reproducible gene transformation systems. In this study, we report a new transformation method utilizing L-methionine sulfoximine (MSO) as a novel agent for selection of transgenic Dendrobium
Nuša Pristovšek et al.
Biotechnology journal, 13(3), e1700216-e1700216 (2018-01-24)
The selection of clonally derived Chinese hamster ovary (CHO) cell lines with the highest production rate of recombinant glycoproteins remains a big challenge during early stages of cell line development. Different strategies using either product titer or product titer normalized
Chromatograms
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