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Comparative proteomic analysis between normal skin and keloid scar.

C T Ong¹, Y T Khoo, A Mukhopadhyay

¹Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

The British Journal of Dermatology

|February 5, 2010

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This study identified key proteins in keloid scars (KS) that differ from normal skin (NS). These differentially expressed proteins, including asporin and macrophage migration inhibitory factor (MIF), offer potential therapeutic targets for keloid treatment.

Area of Science:

Proteomics
Dermatology
Molecular Biology

Background:

Keloids are pathological scars with limited effective treatments.
Understanding the molecular basis of keloid formation is crucial for developing new therapies.

Purpose of the Study:

To identify molecular mediators contributing to the fibrotic phenotype of keloids.
To compare protein expression profiles between normal skin and keloid scar tissues.

Main Methods:

Comparative proteomic analysis using two-dimensional gel electrophoresis and MALDI-TOF.
Utilized Mascot database searching and Melanie 5 software for data analysis.
Western blot analysis confirmed significant protein expression changes.

Main Results:

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In Vitro Model of Human Cutaneous Hypertrophic Scarring using Macromolecular Crowding

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Isolation, Culture, and Characterization of Primary Dermal Fibroblasts from Human Keloid Tissue

Isolation, Culture, and Characterization of Primary Dermal Fibroblasts from Human Keloid Tissue

Published on: July 28, 2023

Identified 23 differentially expressed proteins in normal skin and 32 in keloid scars.
Found upregulated proteins in keloids, including inflammatory markers (S100 proteins), wound healing proteins (gelsolin-like capping protein), fibrogenetic proteins (mast cell β-tryptase, macrophage migration inhibitory factor [MIF]), and tumor suppressor proteins (asporin, stratifin, galectin-1, maspin).
Confirmed increased expression of asporin, stratifin, galectin-1, and MIF in keloid scars via Western blot.

Conclusions:

This research identified specific differentially expressed proteins in keloid scar tissue.
These proteins represent potential molecular targets for novel therapeutic interventions against keloids.