Dextran sulfate 8 (DS8)

Dextran sulfate for cell media

CAS Number: 9011-18-1

Dextran sulfate 8 is a low molecular weight dextran derivative produced by the sulfation of selected dextran fractions. TdB Labs produces dextran sulfate 8, where 8 represents a molecular weight of 8000 Da. The full name is Dextran sulfate sodium salt 8kDa. DS8HS is currently available in pharma grade quality but it can be produced in technical grade too, while DS8LS can be produced in both the technical and pharma grades upon request.

Dextran sulfate 8 from TdB Labs is made by a novel and unique know-how procedure, which gives a white powder with low absorbance and excellent stability. The product does not contain pyridine and is therefore non-toxic.

Dextran sulfate 8 is supplied as the sodium salt and is stabilised by addition of very small quantities of phosphate salts. The molecular weight for each batch is measured thoroughly and declared as Mw and Mn in the Certificate of Analysis (CoA) provided to the customer for each batch. Each batch-specific molecular weight declared refers to values obtained after product sulfation. The CoA supplied to the customer declares also other crucial quality parameters of the current batch of the product. The molecular weight range, sulfur content, moisture etc. are carefully controlled, documented and declared to the customer.

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Dextran is a polysaccharide derived from the bacterium Leuconostoc mesenteroides B512F and consists of an α-D-(1 – 6) linear glucan with a low content (ca. 5%) of sidechains linked to the 3-carbon of glucose. Dextran sulfate 8 is a sulfated derivative of selected dextran fraction. The sulfate content of our low sulfated dextran sulfate 8 kDa lies between 8 to 13 %, the degree of sulfatation of our high sulfated dextran sulfate 8 kDa is between 16 to 20 %.

Storage and stability
Dextran sulfate 8 is stable for more than 6 years when stored dry in well-sealed containers at ambient temperature.

Dextran sulfate 8 is readily soluble in water.

Dextran sulfate 8 is a common additive in cell culture media where it is often used as an anti-coagulant. Further, it has a wide range of application areas and properties that are listed below:

  • Anti-coagulation agent in cell media
  • Selective precipitation of lipoproteins
  • Acceleration of DNA hybridisation.
  • Releasing DNA from DNA-histones complexes
  • Inhibition tRNA-binding to ribosomes
  • Inhibition of ribonucleases
  • Anti-viral properties
  • Used in cosmetics for anti-inflammation properties and osmotic retention of water
  • Separation of microorganisms and macromolecules
  • Adjuvant in vaccines
  • Studies of perm selectivity of membranes


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  1. Ali, H. M. et al. Safety and Clinical Outcomes of Using Low–Molecular-Weight Dextran During Islet Autotransplantation in Children. Pancreas Publish Ahead of Print, (9000).
  2. Möhwald, M. et al. Aspherical, Nanostructured Microparticles for Targeted Gene Delivery to Alveolar Macrophages. Adv Healthc Mater 6, (2017).
  3. Dijk, M. et al. How Dextran Sulfate Affects C1-inhibitor Activity: A Model for Polysaccharide Potentiation. Structure 24, 2182–2189 (2016).
  4. Shahraz, A. et al. Anti-inflammatory activity of low molecular weight polysialic acid on human macrophages. Scientific Reports 5, 16800 (2015).
  5. Svensjö, E., Nogueira de Almeida, L., Vellasco, L., Juliano, L. & Scharfstein, J. Ecotin-Like ISP of L. major Promastigotes Fine-Tunes Macrophage Phagocytosis by Limiting the Pericellular Release of Bradykinin from Surface-Bound Kininogens: A Survival Strategy Based on the Silencing of Proinflammatory G-Protein Coupled Kinin B2 and B1 Receptors. Mediators of Inflammation (2014) doi:10.1155/2014/143450.
  6. Parraga, J. E., Zorzi, G. K., Diebold, Y., Seijo, B. & Sanchez, A. Nanoparticles based on naturally-occurring biopolymers as versatile delivery platforms for delicate bioactive molecules: An application for ocular gene silencing. International Journal of Pharmaceutics 477, 12–20 (2014).
  7. Svensjö, E. et al. Maxadilan, the Lutzomyia longipalpis vasodilator, drives plasma leakage via PAC1–CXCR1/2-pathway. Microvascular Research 83, 185–193 (2012).
  8. Russo, L. M. et al. Renal Processing of Albumin in Diabetes and Hypertension in Rats. AJN 23, 61–70 (2003).
  9. Landauer, K. et al. Influence of Carboxymethyl Dextran and Ferric Citrate on the Adhesion of CHO Cells on Microcarriers. Biotechnology Progress 19, 21–29 (2003).
  10. Hugerth, A. M. Micropolarity and Microviscosity of Amitriptyline and Dextran Sulfate/Carrageenan‐Amitriptyline Systems: The Nature of Polyelectrolyte–Drug Complexes. Journal of Pharmaceutical Sciences 90, 1665–1677 (2001).
  11. Persson, B., Hugerth, A., Caram-Lelham, N. & Sundelöf, L.-O. Dextran Sulfate−Amphiphile Interaction; Effect of Polyelectrolyte Charge Density and Amphiphile Hydrophobicity. Langmuir 16, 313–317 (2000).
  12. Hugerth, A. & Sundelöf, L.-O. Effect of Polyelectrolyte Counterion Specificity on Dextran Sulfate−Amphiphile Interaction in Water and Aqueous/Organic Solvent Mixtures. Langmuir 16, 4940–4945 (2000).
  13. Burne, M. J. et al. Anomalous decrease in dextran sulfate clearance  in the diabetic rat kidney. American Journal of Physiology-Renal Physiology 274, F700–F708 (1998).
  14. Caram‐Lelham, N., Hed, F. & Sundelöf, L.-O. Adsorption of charged amphiphiles to oppositely charged polysaccharides—A study of the influence of polysaccharide structure and hydrophobicity of the amphiphile molecule. Biopolymers 41, 765–772 (1997).
  15. Vyas, S. V., Burne, M. J., Pratt, L. M. & Comper, W. D. Glomerular Processing of Dextran Sulfate during Transcapillary Transport. Archives of Biochemistry and Biophysics 332, 205–212 (1996).
  16. Wells, X. E. & Dawes, J. Role of the Liver and Kidney in the Desulphation of Heparin in vivo. Thromb Haemost 74, 667–672 (1995).
  17. Vyas, S. V., Parker, J.-A. & Comper, W. D. Uptake of dextran sulphate by glomerular intracellular vesicles during kidney ultrafiltration. Kidney International 47, 945–950 (1995).

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