P7405

Poly-ᴅ-Lysine Hydrobromide

synthetic, mol wt >300,000, powder, γ-irradiated, suitable for cell culture, BioXtra

• Sinónimos: PDL
• Fórmula lineal: D-Lys-(D-Lys)_n-D-Lys · xHBr
• Número de CAS: 27964-99-4
• MDL number: MFCD00131934
• UNSPSC Code: 12352202
• PubChem Substance ID: 24898848
• NACRES: NA.75

Propiedades

• product name: Poli-D-lisina hydrobromide, mol wt >300,000, lyophilized powder, γ-irradiated, BioReagent, suitable for cell culture
• biological source: synthetic (chemical)
• Quality Level: 200
• sterility: γ-irradiated
• product line: BioReagent; BioXtra
• form: lyophilized powder
• mol wt: >300,000
• packaging: pkg of 5 mg
• concentration: 0.016—0.032 mmol lysine
• technique(s): cell culture | mammalian: suitable
• surface coverage: 4 μg/cm²
• solubility: H₂O: soluble 50 mg/mL, clear, colorless
• shipped in: ambient
• storage temp.: −20°C
• SMILES string: O=C(C)[C@@](NC)([H])CCCCN.[Br]
• InChI: 1S/C6H14N2O2.BrH/c7-4-2-1-3-5(8)6(9)10;/h5H,1-4,7-8H2,(H,9,10);1H
• InChI key: MEXAGTSTSPYCEP-UHFFFAOYSA-N

Descripción

General description

Poly-D-Lysine Hydrobromide (PDL) is a cationic polymer composed of lysine residues with an associated hydrobromide molecule per lysine unit. The presence of the hydrobromide molecule introduces a distinctive property to the poly-D-lysine structure allowing the poly-D-lysine to adopt a crystalline form, rendering it soluble in aqueous solutions.

Application

Poly-D-lysine hydrobromide has been used :

• in preparing the surface of coverslips for cell attachment
• in coating glass-bottom dishes for live cell imaging of primary cortical neuronal cells
• in coating 24-well plates for the isolation of primary astrocytes to study the impact of melanoma-derived exosomes on the reprogramming of stromal cells within the metastatic microenvironment
• for coating 16-well chamber slides to study the effects of maternal immune activation on behavioral impairments and alterations in cytokine and synaptic protein expression in the cerebellum

Los polímeros de poli-D-lisina pueden utilizarse en la preparación de las superficies para fijación celular. Los polímeros de D-lisina también pueden utilizarse con células que digieren los polímeros poli-L-lisina y causan un captación excesiva de L-lisina.

Este producto está recomendado como sustrato de cultivo celular cuando se utilizan entre 0,5 y 1,0 ml de una disolución 0,1 mg/ml para recubrir 25 cm². Las versiones del producto de menor peso molecular son menos viscosas, pero las versiones de gran peso molecular proporcionan mas sitios de fijación por molécula.

Biochem/physiol Actions

Poly-D-Lysine Hydrobromide (PDL) is a nonspecific attachment factor for cells useful in promoting cell adhesion to solid substrates by enhancing electrostatic interaction between negatively charged ions of the cell membrane and the culture surface. PDL increases the number of positively charged cell binding sites post-absorption to the culture surface. PDL coating promotes the attachment of cells to solid surfaces that usually grow in suspension.

El hidrobromuro de poli-D-lisina es un factor de unión inespecífica para las células, útil en la promoción de la adhesión celular a los sustratos sólidos al intensificar la interacción electrostática entre iones con carga negativa de la membrana celular y la superficie del cultivo. Después de la absorción a la superficie del cultivo, la poli-D-lisina aumenta el número de sitios de unión a la célula con carga positiva.

Components

La poli-D-lisina es una polímero de aminoácido con carga positiva con aproximadamente un HBr por residuo de lisina. El hidrobromuro permite a la poli-D-lisina estar en una forma cristalina hidrosoluble. Puede encontrarse una pequeña cantidad del producto en la estructura ß porque el HBr interfiere en el enlace de hidrógeno entre el grupo amino y los grupos carboxilo o los grupos que contienen N u O.

Caution

Las disoluciones estériles son estables durante un máximo de 2 años cuando se conservan entre 2 y 8°C. Deben guardarse desecadas a -20°C.

Analysis Note

This product has a molecular weight >300,000 and is cell culture tested and gamma-irradiated. To remove the HBr, dissolve this product in a neutral buffer and dialyze to remove the salts. In general, to use this product as an attachment factor, add 50 mL of sterile tissue culture grade water to 5 mg of poly-lysine, and aseptically coat the surface with 1 mL per 25 cm² of solution. After 5 minutes, remove the solution through aspiration and thoroughly rinse the surface. Let dry for two hours before introducing cells and medium.

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)