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  3. SPACE peptide

SPACE peptide is a skin penetrating peptide (SPPs). SPACE peptide can enhance topical delivery of a macromolecule, hyaluronic acid.

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

Custom Peptide Synthesis

SPACE peptide Chemical Structure

SPACE peptide Chemical Structure

CAS No. : 1621717-95-0

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1 mg USD 50 In-stock
5 mg USD 130 In-stock
10 mg USD 210 In-stock
25 mg USD 450 In-stock
50 mg USD 720 In-stock
100 mg USD 1150 In-stock
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Based on 3 publication(s) in Google Scholar

SPACE peptide Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

SPACE peptide is a skin penetrating peptide (SPPs). SPACE peptide can enhance topical delivery of a macromolecule, hyaluronic acid[1][2][3].

In Vitro

SPACE peptide, when conjugates to cargoes such as small molecules and proteins, is able to facilitate their penetration across the stratum corneum into epidermis and dermis[2].
SPACE peptide also exhibits increased penetration into various cells including keratinocytes, fibroblasts, and endothelial cells, likely through a macropinocytosis pathway[2].
SPACE peptide enhances Cyclosporine A skin penetration, via a transcellular pathway, enhancing its partitioning into keratin-rich corneocytes through concurrent binding of SPACE with keratin and Cyclosporine A[3].

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

SPACE peptide Related Antibodies
Molecular Weight

1090.15

Formula

C40H63N15O17S2
CAS No.
Appearance

Solid

Color

White to off-white

Sequence

Ala-Cys-Thr-Gly-Ser-Thr-Gln-His-Gln-Cys-Gly (Disulfide bridge: Cys2-Cys10)
Sequence Shortening

ACTGSTQHQCG (Disulfide bridge: Cys2-Cys10)
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

Sealed storage, away from moisture

Powder -80°C 2 years
-20°C 1 year

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

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (91.73 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 50 mg/mL (45.87 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.9173 mL 4.5865 mL 9.1730 mL
5 mM 0.1835 mL 0.9173 mL 1.8346 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). 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)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.5 mg/mL (2.29 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (2.29 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 100 mg/mL (91.73 mM); Clear solution; Need ultrasonic

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

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

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: 98.86%

COA (263 KB) LCMS (149 KB)

Handling Instructions (2659 KB)
References
Cell Assay
[2]

The cytotoxicity of SPACE peptide is assessed using the MTT Cell Proliferation Assay. HEKa cells are seeded in 96-well microplates at a density of 5000 cells/well. Cultures are allowed to grow until they reaches ~80% confluency. Cells are then incubated with 150 μL of 10, 5, 2.5, or 1.25 mg/mL SPACE peptide in media. Media only is used as a negative control, and media without cells is used to subtract background. Cytotoxicity is assessed for 1, 4, and 12 h incubation periods[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[3]

Mice: Female BALB/c mice (knockdown of GAPDH protein) are anesthetized using isoflurane inhalation (2-3%), the back skin of animals is shaved, and a cylinder with an exposed skin area of 1.8 cm2 is attached to the back of mice. 200 μL of the SPACE peptide is topically applied in the attached cylinder, and is manually spread over the entire exposure area. Applied test solutions are allowed to incubate with the exposed skin for 6 hours while keeping animals under minimal anesthesia. After 6 hours, the cylinder is carefully removed, and the entire exposure area is covered with sterile gauze and a breathable bandage. After 72 hrs, animals are sacrificed and skin biopsies (5 mm diameter) are collected from treated area of the animal’s skin. Total protein concentration in the skin biopsy tissue is determined[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
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). 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 / DMSO 1 mM 0.9173 mL 4.5865 mL 9.1730 mL 22.9326 mL
5 mM 0.1835 mL 0.9173 mL 1.8346 mL 4.5865 mL
10 mM 0.0917 mL 0.4587 mL 0.9173 mL 2.2933 mL
15 mM 0.0612 mL 0.3058 mL 0.6115 mL 1.5288 mL
20 mM 0.0459 mL 0.2293 mL 0.4587 mL 1.1466 mL
25 mM 0.0367 mL 0.1835 mL 0.3669 mL 0.9173 mL
30 mM 0.0306 mL 0.1529 mL 0.3058 mL 0.7644 mL
40 mM 0.0229 mL 0.1147 mL 0.2293 mL 0.5733 mL
DMSO 50 mM 0.0183 mL 0.0917 mL 0.1835 mL 0.4587 mL
60 mM 0.0153 mL 0.0764 mL 0.1529 mL 0.3822 mL
80 mM 0.0115 mL 0.0573 mL 0.1147 mL 0.2867 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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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:

SPACE peptide1621717-95-0OthersskinpenetratingpeptideSPPInhibitorinhibitorinhibit

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