Laurdan
Based on 26 publication(s) in Google Scholar
Laurdan is a membrane-permeable fluorescent probe that displays spectral sensitivity to the phospholipid phase of the cell membrane to which it is bound. Quantitation of generalized polarization (GP) of Laurdan can be used to identify phospholipid phase (Ex/Em = 370/440-490 nm).
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- Pureté: 99.79%
- CAS No.: 74515-25-6
- Formule: C24H35NO
- Masse moléculaire:353.54
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Stockage:
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Publications Citing Use of MedChemExpress (MCE) Laurdan
More- Cell Host Microbe. 2026 Jan 14;34(1):35-51.e9. [Abstract]
- Adv Sci (Weinh). 2025 Jul 29:e05436. [Abstract]
- Adv Sci (Weinh). 2025 Jan 30:e2411923. [Abstract]
- Adv Sci (Weinh). 2024 Aug 13:e2402693. [Abstract]
- Chem Eng J. 2025 Oct 3.
- Food Chem. 2025 Aug 11;493(Pt 3):145888. [Abstract]
- Genes Dis. 2026 Mar 19.
- Small Methods. 2026 Feb;10(4):e01688. [Abstract]
- Int J Biol Macromol. 2026 Jan:336:149288. [Abstract]
- Phytomedicine. 2025 Nov 25:148:157421. [Abstract]
- ACS Appl Mater Interfaces. 2026 Feb 11;18(5):8807-8815. [Abstract]
- Cell Rep. 2025 Jul 22;44(7):115987. [Abstract]
- Cell Mol Life Sci. 2022 Oct 16;79(11):552. [Abstract]
- Colloids Surf B Biointerfaces. 2026 Sep:265:115680. [Abstract]
- Biochem Pharmacol. 2026 Aug;250(Pt 1):117997. [Abstract]
- J Oral Microbiol. 2023 Dec 10.
- Virulence. 2026 Dec 31;17(1):2646808. [Abstract]
- Int J Antimicrob Agents. 2024 Sep 16:107338. [Abstract]
- Antibiotics (Basel). 2024 Sep 13;13(9):882. [Abstract]
- Microbiology (Reading). 2026 Jun;172(6):001710. [Abstract]
- ACS Omega. 2026 Feb 9;11(7):12450-12460. [Abstract]
- iScience. 2025 Nov 10;28(12):114003. [Abstract]
- Am J Physiol Gastrointest Liver Physiol. 2025 Aug 1;329(2):G291-G306. [Abstract]
- Caries Res. 2025 Oct 6:1-24. [Abstract]
- bioRxiv. 2025 Oct 29:2025.10.29.685379. [Abstract]
- SSRN. 2024 Nov 11.
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Others
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Others
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Flow Cytometry
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Others
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Others
Activité biologique
Laurdan (from 1:1000 to 5:1000) acts as a biosensor to monitor changes in the membrane water content during cell migration in NIH3T3 cells[1].
Guide (The following is our recommended protocol. This protocol is only a guide and should be modified according to your specific needs).
1. Laurdan staining solution preparation
1.1 Preparation of stock solution
Dissolve Laurdan in dimethyl sulfoxide (DMSO) to prepare a 1.8 mM stock solution.
1.2 Preparation of working solution
Dilute the Laurdan stock solution at a dilution of 1:1000.
2. Laurdan staining
2.1 NIH3T3 cells are cultured in Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum, 5 mL Pen-Strep, and 2.5 mL 1 M HEPES.
2.2 Freshly isolated NIH3T3 cells are seeded into 35 mm Mattek glass-bottom dishes coated with fibronectin.
2.3 Cells are incubated with Laurdan for 40 min at 37°C.
2.4 Observed using an LSM710 META laser scanning microscope.
2.5 SimFCS software processing to calibrate the system and phasor diagram of FLIM data by measuring fluorescein (pH 11).
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
440/490
370
Chemical Information
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CAS No. 74515-25-6
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Appearance Solid
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Masse moléculaire 353.54
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Formule C24H35NO
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Color White to yellow
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SMILES
CCCCCCCCCCCC(C1=CC=C2C=C(N(C)C)C=CC2=C1)=O
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Livraison
Room temperature in continental US; may vary elsewhere.
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Stockage
4°C, protect from light
* In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)
Publications (26)
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Journal Impact Factor
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Most Recent
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Cell Host Microbe
Rothia mucilaginosa membrane vesicles stabilize labile iron to alleviate UVB-induced ferroptosis. [Abstract]2026 Jan 14;34(1):35-51.e9. PMID: 41500222 -
Adv Sci (Weinh)
2025 Jul 29:e05436. PMID: 40726407
Laurdan purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2025 Jul 29:e05436. [Abstract]
Quantification of membrane fluidity (Laurdan, 2 µM; 24 h) in SiHa cells exposed for 24 h to 15 µm ACOX1i (or DMSO as vehicle); Generalized polarization (GP) was calculated for ER membrane thanks to 1 µM ER-tracker red staining.
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Adv Sci (Weinh)
2025 Jan 30:e2411923. PMID: 39888292 -
Adv Sci (Weinh)
TMEM16F Expressed in Kupffer Cells Regulates Liver Inflammation and Metabolism to Protect Against Listeria Monocytogenes. [Abstract]2024 Aug 13:e2402693. PMID: 39136057
Laurdan purchased from MedChemExpress. Usage Cited in: Adv Sci (Weinh). 2024 Aug 13:e2402693. [Abstract]
Representative flow cytometry plots of Annexin V and PI in wild-type (WT) and TMEM16F KO RMA cells after Listeria (Lm) infection, with histograms of Laurdan (30 min) dye fluorescence intensity showing designated gating regions.
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Food Chem
Visible light-mediated degradation of benzo(a)pyrene in smoked sausages by liposome-encapsulated hydrogenated TiO₂: insights into mechanisms and pathways. [Abstract]2025 Aug 11;493(Pt 3):145888. PMID: 40816080 -
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Small Methods
Intracellular mRNA Delivery via Lambda DNA-Based Viscoelastic Mechanoporation in Hyperbolic Microfluidic Channel. [Abstract]2026 Feb;10(4):e01688. PMID: 41580930 -
Int J Biol Macromol
Bacteriophage lysin P26ly combats multidrug-resistant Escherichia coli O157 and methicillin-resistant Staphylococcus aureus via cell wall degradation and membrane disruption. [Abstract]2026 Jan:336:149288. PMID: 41317755 -
Phytomedicine
Membrane cholesterol-dependent dual VEGFR2/FGFR1 inhibition by ginsenoside Rg3 to overcome gefitinib resistance in NSCLC. [Abstract]2025 Nov 25:148:157421. PMID: 41192258 -
ACS Appl Mater Interfaces
Development of Organogel-AFPT System for Encapsulation and Cryopreservation of Yarrowia lipolytica. [Abstract]2026 Feb 11;18(5):8807-8815. PMID: 41591409 -
Cell Rep
Lon dysfunction-mediated collateral sensitivity drives effective antibiotic combination therapies against tigecycline-resistant pathogens. [Abstract]2025 Jul 22;44(7):115987. PMID: 40650911
Laurdan purchased from MedChemExpress. Usage Cited in: Cell Rep. 2025 Jul 22;44(7):115987. [Abstract]
Laurdan (10 μM). Membrane fluidity of parental, evolved, gene-deletion, and complementation strains treated with 8 μg/mL nitrofurantoin for 1 h.
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Cell Mol Life Sci
2022 Oct 16;79(11):552. PMID: 36244019
Laurdan purchased from MedChemExpress. Usage Cited in: Cell Mol Life Sci. 2022 Oct 16;79(11):552. [Abstract]
Bacterial cell membrane disruption by Laurdan probe staining. The fuorescence intensity of Laurdan (10 μM; 10 min) was recorded using a microplate reader with excitation at 350 nm and emission at 435 nm and 490 nm.
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Colloids Surf B Biointerfaces
Engineering of liposomes containing cholesterol analogues to enhance melanoma therapy via membrane fusion. [Abstract]2026 Sep:265:115680. PMID: 41950889 -
Biochem Pharmacol
2026 Aug;250(Pt 1):117997. PMID: 42025808 -
Laurdan purchased from MedChemExpress. Usage Cited in: J Oral Microbiol. 2023 Dec 10.
Laurdan (10 μM; 30min) staining followed by the calculation of GP to represent cell membrane fluidity.
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Virulence
Antibacterial efficacy and mechanism of the novel antimicrobial peptide lachnospirin-1 against Acinetobacter baumannii. [Abstract]2026 Dec 31;17(1):2646808. PMID: 41838520 -
Int J Antimicrob Agents
Isobavachalcone enhances sensitivity of colistin-resistant Klebsiella pneumoniae: In vitro and in vivo proof-of-concept studies. [Abstract]2024 Sep 16:107338. PMID: 39293773 -
Antibiotics (Basel)
2024 Sep 13;13(9):882. PMID: 39335055 -
Microbiology (Reading)
2026 Jun;172(6):001710. PMID: 42228390 -
ACS Omega
High-Throughput Screening of FDA-Approved Drugs for Antibacterial and Antibiofilm Activities Against Multidrug-resistant Pseudomonas aeruginosa. [Abstract]2026 Feb 9;11(7):12450-12460. PMID: 41768696 -
iScience
Nitroxoline as an antimicrobial synergist reverses colistin resistance in multidrug-resistant Escherichia coli. [Abstract]2025 Nov 10;28(12):114003. PMID: 41377659 -
Am J Physiol Gastrointest Liver Physiol
Glia maturation factor-β in hepatocytes enhances liver regeneration and mitigates steatosis and ballooning in zebrafish. [Abstract]2025 Aug 1;329(2):G291-G306. PMID: 40602783 -
Caries Res
Biotin Limitation Attenuates Streptococcus mutans Cariogenicity by Disrupting Metabolic Flux and Virulence Pathways. [Abstract]2025 Oct 6:1-24. PMID: 41052251 -
bioRxiv
2025 Oct 29:2025.10.29.685379. PMID: 41278660 -
Solvant et solubilité
DMSO : 5 mg/mL (14.14 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Pureté et documentation
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Fiche technique (269 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Korean - KR (396 KB)
- Portuguese - PT (396 KB)
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Instruction de manipulation (2659 KB)
Références
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.8285 mL | 14.1427 mL | 28.2853 mL | 70.7134 mL |
| 5 mM | 0.5657 mL | 2.8285 mL | 5.6571 mL | 14.1427 mL | |
| 10 mM | 0.2829 mL | 1.4143 mL | 2.8285 mL | 7.0713 mL |