Related Experiment Video
Updated: Apr 30, 2026
The Three-Dimensional Human Skin Reconstruct Model: a Tool to Study Normal Skin and Melanoma Progression
Published on: August 3, 2011
Multi-omic Data Integration Reveals Drug Targets of Skin Fibrosis
Zexin Zhang1, Shu Li2, Xinyue Dai1
1Department of Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Introduction:
Scar heterogeneity, encompassing normal scar (NS) and pathological scars [hypertrophic scar (HS) and keloids], emerges from the dynamic interplay between systemic immune responses and local tissue microenvironment, highlighting the urgent need for drugs targeting different types of scars through both dimensions.
Methods:
Data from DECODE and EQTLGen databases were used as exposure variables at the protein and mRNA levels in the blood, and data from GTEx and ScQTLbase as exposure variables at the tissue and single-cell levels. Two sample Mendelian Randomization (MR) studies were conducted at the systemic, local, and single-cell levels. The outcome variables were based on the NS, HS, and keloid cohorts in the authoritative FinnGen database. The results were ascertained using seven MR methods, including inverse-variance weighting (IVW), Wald ratio, weighted median, weighted mode, simple median, MR-Egger, and Summary-data-based Mendelian Randomization (SMR). Single-cell RNA-seq data were leveraged to validate the expression profiles and functions of the drug targets.
Results:
NUDT2, ATXN3, OGN, UROS, and TSG101 were significantly associated with keloids, while PARK7 and MZT2A showed a significant correlation with HSs, and CDCP1 was significantly linked to NSs. Among them, RNA and protein expression levels of NUDT2 and PARK7 demonstrated significant positive associations with keloids and HSs, respectively, at the blood, skin, and single-cell levels. Functional analysis revealed that the higher expression of NUDT2 was associated with angiogenesis and the cellular response to hormone stimuli, whereas PARK7 was involved in the organization of collagen fibrils and the extracellular matrix structure. Moreover, single-cell sequencing confirmed the high expression of NUDT2 and PARK7 in keloids and HSs. These findings highlight their potential roles in both systemic and local scar pathogenesis and underscore their promise as therapeutic targets.
Discussion:
This study identifies scar subtype-specific targets, particularly NUDT2 and PARK7, expanding therapeutic candidates for scar management. Multi-ethnic cohort studies are warranted to validate target universality.
Conclusion:
Collectively, we have identified eight drug targets, with NUDT2 and PARK7 in particular showing potential therapeutic value for keloids and HSs. Additionally, our results suggest the feasibility of both local and systemic drug administrations.
Insights
This study identifies NUDT2 and PARK7 as key drug targets for managing keloids and hypertrophic scars. These findings offer new therapeutic avenues for scar treatment, potentially through both local and systemic administration.
Area of Science:
- Dermatology and Molecular Biology
- Genetics and Genomics
- Pharmacology and Therapeutics
Background:
- Scar heterogeneity includes normal scars (NS), hypertrophic scars (HS), and keloids.
- Scar formation results from complex interactions between systemic immunity and local tissue microenvironments.
- Targeting scar subtypes necessitates understanding both systemic and local dimensions of pathogenesis.
Purpose of the Study:
- To identify novel, subtype-specific drug targets for scar management.
- To investigate the systemic and local roles of potential therapeutic targets in scar formation.
- To validate identified targets using multi-level omics data.
Main Methods:
- Two-sample Mendelian Randomization (MR) studies were performed at systemic, local, and single-cell levels.
- Utilized DECODE, EQTLGen, GTEx, ScQTLbase, and FinnGen databases for exposure and outcome variables.
- Employed seven MR methods and single-cell RNA sequencing for target validation and functional analysis.
Main Results:
- Identified eight potential drug targets, with NUDT2 significantly associated with keloids and PARK7 with HSs.
- NUDT2 and PARK7 expression positively correlated with keloids and HSs across blood, skin, and single-cell levels.
- Functional analysis linked NUDT2 to angiogenesis and PARK7 to extracellular matrix organization.
Conclusions:
- NUDT2 and PARK7 are promising therapeutic targets for keloids and HSs, respectively.
- Findings support the potential for both local and systemic drug delivery for scar management.
- Further multi-ethnic studies are recommended to confirm target universality.
