2. Anti-infection
  3. Bacterial
  4. LL-37, human

LL-37, human is a 37-residue, amphipathic, cathelicidin-derived antimicrobial peptide, which exhibits a broad spectrum of antimicrobial activity. LL-37, human could help protect the cornea from infection and modulates wound healing.

For research use only. We do not sell to patients.

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LL-37, human Chemical Structure

LL-37, human Chemical Structure

CAS No. : 154947-66-7

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1 mg USD 125 In-stock
5 mg USD 260 In-stock
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Based on 2 publication(s) in Google Scholar

Other Forms of LL-37, human:

LL-37, human Related Antibodies

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  • Biological Activity

  • Purity & Documentation

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Description

LL-37, human is a 37-residue, amphipathic, cathelicidin-derived antimicrobial peptide, which exhibits a broad spectrum of antimicrobial activity. LL-37, human could help protect the cornea from infection and modulates wound healing[1][2][3].

In Vitro

LL-37, human (1-20 μg/mL; 24 h) affects HCECs migration[2].
LL-37, human (0.0001-5 μg/mL;6-24 h) affects cytokine secretion in HCECs[2].
LL-37, human (1-100 μg/mL; 24 h) shows dose-dependently cytotoxic to HCECs at concentrations over 10 μg /mL[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

LL-37, human Related Antibodies

Cell Migration Assay [2]

Cell Line: Human corneal epithelial cell (HCEC)
Concentration: 1, 2.5, 5, 10 and 20 μg/mL
Incubation Time: 24 hours
Result: Dose-dependently stimulated HCEC migration but showed no effect on cell proliferation.

Cell Viability Assay[2]

Cell Line: Human corneal epithelial cell (HCEC)
Concentration: 0.0001, 0.001, 0.01, 0.1, 0.5, 1, and 5 μg/mL
Incubation Time: 6 and 24 hours
Result: Dose-dependently increased IL-8, IL-6, IL-1β and TNF-α secretion at 6 and 24 hours in HCEC.
In Vivo

LL-37, human (0.4-2.0 mg/kg; intratracheal injection once) ameliorates MRSA-induced pneumonia of mice[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: 6-8 week-old C57BL/6 mice with MRSA-induced pneumonia[3]
Dosage: 0.4, 0.8, 1.2, 1.6 and 2.0 mg/kg
Administration: Intratracheal injection; 0.4-2.0 mg/kg once
Result: Decreased IL-6 and TNF-α release to attenuated MRSA-induced pneumonia of testing mice.
Molecular Weight

4493.26

Formula

C205H340N60O53
CAS No.
Appearance

Solid

Color

White to off-white

Sequence

Leu-Leu-Gly-Asp-Phe-Phe-Arg-Lys-Ser-Lys-Glu-Lys-Ile-Gly-Lys-Glu-Phe-Lys-Arg-Ile-Val-Gln-Arg-Ile-Lys-Asp-Phe-Leu-Arg-Asn-Leu-Val-Pro-Arg-Thr-Glu-Ser
Sequence Shortening

LLGDFFRKSKEKIGKEFKRIVQRIKDFLRNLVPRTES
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Sealed storage, away from moisture and light, under nitrogen

Powder -80°C 2 years
-20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)

Solvent & Solubility
In Vitro: 

H2O : 50 mg/mL (11.13 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.2226 mL 1.1128 mL 2.2256 mL
5 mM 0.0445 mL 0.2226 mL 0.4451 mL
View the 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 (sealed storage, away from moisture and light, under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.60%

COA (242 KB) RP-HPLC (110 KB) MS (183 KB) Elemental Analysis Report (99 KB)

Handling Instructions (2659 KB)
References

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 (sealed storage, away from moisture and light, under nitrogen). 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
H2O 1 mM 0.2226 mL 1.1128 mL 2.2256 mL 5.5639 mL
5 mM 0.0445 mL 0.2226 mL 0.4451 mL 1.1128 mL
10 mM 0.0223 mL 0.1113 mL 0.2226 mL 0.5564 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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LL-37, human Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

LL-37, human154947-66-7Bacterial37-residuecathelicidin-derivedpeptidebroad spectrumcorneaHCECintratracheal injectionInhibitorinhibitorinhibit

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