pPB peptide
pPB peptide is a cyclic peptide targeting platelet-derived growth factor receptor β (PDGFRβ). Derived from natural platelet-derived growth factor (PDGF), pPB peptide contains arginine and isoleucine as key receptor-binding residues. pPB peptide specifically binds to PDGFRβ, which is highly expressed on the surface of activated hepatic stellate cells (HSC). pPB peptide can be used in studies related to liver fibrosis, liver cirrhosis, and tumor-specific drug delivery.
For research use only. We do not sell to patients.
- CAS No.: 663933-94-6
- Formula: C35H60N12O13S2
- Molecular Weight:921.05
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
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PDGFRβ |
The pPB peptide is successfully conjugated to pegylated hollow polydopamine nanoparticles, with a molar grafting ratio of 1.50%[1].
The pPB peptide can be conjugated to form DSPE-PEG-pPB[2].
Modification with pPB peptide (6 weeks) does not significantly alter the particle size distribution, charge or morphology of SNALPs, and SNALPs modified with 2% pPB remain stable for at least 6 weeks[2].
The pPB peptide mediates enhanced uptake of SNALPs by hepatic stellate cells (HSCs) through specific binding to the PDGFR-β receptor on HSCs[2].
Modification with the pPB peptide enhances the gene silencing effects on HSP47 and HMGB1 in hepatic stellate cells (HSCs) by improving the uptake efficiency of SNALP[2].
The pPB peptide successfully conjugates with DMPE-PEG-Mal to form the DPP construct[3].
PPB peptide (1 μg/mL; 2 h) mediates PDGFβR-specific, species-nonspecific binding of IFNγ conjugates to mouse NIH3T3 fibroblasts, human LX2 hepatic stellate cells, and primary rat hepatic stellate cells[4].
The PPB peptide (2 h) significantly reduces TGFβ1-induced collagen expression in mouse NIH3T3 fibroblasts and human LX2 hepatic stellate cells when combined with IFNγ, overcoming the limitation of species-specific IFNγ receptors in human cells[4].
Conjugation of the PPB peptide with IFNγ mediates the inhibition of PDGF-induced proliferation of mouse NIH3T3 fibroblasts[4].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 663933-94-6
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Molecular Weight 921.05
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Formula C35H60N12O13S2
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Sequence
Cys-Ser-Arg-Asn-Leu-Ile-Asp-Cys (disulfide bridge:Cys1-Cys8)
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Sequence Shortening
CSRNLIDC (disulfide bridge:Cys1-Cys8)
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)