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Laminaran

Alias: beta-1,3-Glucan; Iodus 40; Laminaran
Cat No.:V14201 Purity: ≥98%
Laminaran is a β-1-3-glucan developed from Eisenia Bicyclis, a typical ligand of Dectin-1, with Immune-modulatory, radioprotective and anti-cancer effect.
Laminaran
Laminaran Chemical Structure CAS No.: 9008-22-4
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
100mg
Other Sizes
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Product Description
Laminaran is a β-1-3-glucan developed from Eisenia Bicyclis, a typical ligand of Dectin-1, with Immune-modulatory, radioprotective and anti-cancer effect. Laminaran consists of beta (1→3)-glucan with beta (1→6) branches and can be catalyzed by enzymes like glucosidase (EC 3.2.1.6), which destroys beta (1→3 ) key. Laminaran is a promising immunostimulatory molecule for the study of cancer immunity.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
Laminar polysaccharide (100-800 µg/mL; 24 hours) does not cause any cytotoxicity to human melanoma cells SK-MEL-28 or normal epidermal cells JB6 Cl41. After 24 hours of treatment, the inhibition percentage of viable cell numbers is less than 15% at concentrations as high as 800. The last µg/mL [1]. After 24 and 48 hours of treatment, laminarin (200 µg/mL; 24-72 hours) did not decrease the development of SK-MEL-28 cells; however, after 72 hours of treatment, cell proliferation was reduced by 36%[1]. The phosphorylation of c-Raf (Ser259), ERK1/2 (Tyr202/Tyr204), and MEK1/2 (Ser 221) kinases, as well as total kinases examined protein expression levels, were not affected by low quantities of laminarin (25–50 µg/mL; 24 hours). On the other hand, at 50 µg/mL, p-MEK and p-ERK1/2 will decrease[1].
ln Vivo
When compared to mice treated with PBS, OVA, and laminarin alone, the combination of laminarin (iv; 12.5, 25, and 50 mg/kg; 21 days) with OVA (50 μg) dramatically decreased tumor mass [3].
Cell Assay
Cell Viability Assay[1]
Cell Types: JB6 Cl41 and SK-MEL-28 Cell
Tested Concentrations: 100, 200, 400 and 800 µg/mL
Incubation Duration: 24 hrs (hours)
Experimental Results: No cytotoxicity to normal epidermal cells JB6 Cl41 and human melanoma Cells SK-MEL-28.

Cell proliferation assay[1]
Cell Types: SK-MEL-28 Cell
Tested Concentrations: 200 µg/mL
Incubation Duration: 24 hrs (hours)
Experimental Results: diminished cell proliferation at 72 hrs (hours).

Western Blot Analysis[1]
Cell Types: SK-MEL-28 Cell
Tested Concentrations: 25 µg/mL; 50 µg/mL
Incubation Duration: 24 hrs (hours)
Experimental Results: Inhibition of phosphorylation of c-Raf, MEK1/2 and ERK1/2 kinases.
Animal Protocol
Animal/Disease Models: C57BL/6 mice were injected subcutaneously (sc) (sc) with B16-OVA cells [3] Doses: 12.5, 25 and 50 mg/kg; 21-day
Route of Administration: intravenous (iv) (iv)injection
Experimental Results: Prevent B16-OVA tumors by inducing Ag-specific immune responses grow.
References

[1]. Laminaran from brown alga Dictyota dichotoma and its sulfated derivative as radioprotectors and radiosensitizers in melanoma therapy.Carbohydr Polym. 2019 Feb 15;206:539-547.

[2]. Laminaran.

[3]. Laminarin promotes anti-cancer immunity by the maturation of dendritic cells.Oncotarget. 2017 Jun 13;8(24):38554-38567.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C18H32O16
Molecular Weight
504.43
Exact Mass
504.169
CAS #
9008-22-4
PubChem CID
439306
Appearance
White to off-white solid powder
Density
1.8±0.1 g/cm3
Boiling Point
902.8±65.0 °C at 760 mmHg
Flash Point
499.8±34.3 °C
Vapour Pressure
0.0±0.6 mmHg at 25°C
Index of Refraction
1.673
LogP
-6.08
Hydrogen Bond Donor Count
11
Hydrogen Bond Acceptor Count
16
Rotatable Bond Count
7
Heavy Atom Count
34
Complexity
641
Defined Atom Stereocenter Count
12
SMILES
C([C@@H]1[C@H]([C@@H]([C@H](C(O1)O)O)OC2[C@@H]([C@H]([C@@H]([C@H](O2)CO)O)OC3[C@@H]([C@H]([C@@H]([C@H](O3)CO)O)O)O)O)O)O
InChi Key
DBTMGCOVALSLOR-VPNXCSTESA-N
InChi Code
InChI=1S/C18H32O16/c19-1-4-7(22)10(25)11(26)17(31-4)34-15-9(24)6(3-21)32-18(13(15)28)33-14-8(23)5(2-20)30-16(29)12(14)27/h4-29H,1-3H2/t4-,5-,6-,7-,8-,9-,10+,11-,12-,13-,14+,15+,16?,17?,18?/m1/s1
Chemical Name
(3R,4S,5R,6R)-4-[(3R,4S,5R,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-6-(hydroxymethyl)oxane-2,3,5-triol
Synonyms
beta-1,3-Glucan; Iodus 40; Laminaran
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
H2O : ~16.67 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: 33.33 mg/mL (Infinity mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.9824 mL 9.9122 mL 19.8244 mL
5 mM 0.3965 mL 1.9824 mL 3.9649 mL
10 mM 0.1982 mL 0.9912 mL 1.9824 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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