Methods & Expertise

Start with a question.
Connect the methods.

We connect clinical questions with cellular, tissue and data-based evidence. These approaches are represented in our published experiments and collaborations.

OUR APPROACH

Identify a candidate from observations. Test it through perturbation. Return to human skin and clinical context.

01 / Published experience

Cell models & mechanistic testing

Gene perturbation in UV- and oxidative-stress models of human dermal fibroblasts links candidate pathways to senescence and molecular readouts.

Gene overexpression / knockdownSA-β-galqPCR / immunoblottingSASP-related expression
Supporting publications
2022 · Histone deacetylase 4 reverses cellular senescence via DDIT4 in dermal fibroblasts
Co-corresponding author collaboration
  • Daehee HwangDepartment of Biological Sciences, Seoul National University
  • Jin Ho ChungDepartment of Dermatology, Seoul National University College of Medicine
02 / Published experience

Transcriptome integration & cell states

Integration of study-generated bulk and single-cell RNA-seq with public datasets identifies candidates and cell states. Trajectory, regulatory-network and cell-interaction inference generates hypotheses for functional testing.

Differential expressionPathway analysisPublic scRNA-seq reanalysisCross-dataset validationPAGA / pseudotimepySCENICCellPhoneDB
Supporting publications
2022 · Histone deacetylase 4 reverses cellular senescence via DDIT4 in dermal fibroblasts
Co-corresponding author collaboration
  • Daehee HwangDepartment of Biological Sciences, Seoul National University
  • Jin Ho ChungDepartment of Dermatology, Seoul National University College of Medicine
2024 · Chronic ultraviolet irradiation induces memory deficits via dysregulation of the dopamine pathway
Co-corresponding author collaboration
  • Jin Ho ChungDepartment of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine
  • Yong-Seok LeeDepartment of Physiology, Seoul National University College of Medicine
2026 · High-dimensional immune profiling of atopic dermatitis reveals a dysfunctional OX40+ regulatory T cell subset
Co-corresponding author collaboration
  • Yong-Hee KimPB Immune Therapeutics Inc · Transplantation Research Institute, Seoul National University Medical Research Center
  • Hyun Je KimDepartment of Microbiology and Immunology, Seoul National University College of Medicine
2024 · Mapping the immune cell landscape of severe atopic dermatitis by single-cell RNA-seq
Co-corresponding author collaboration
  • Seunghee HongDepartment of Biochemistry, College of Life Science and Biotechnology, Yonsei University
  • Hyun Je KimDepartment of Microbiology and Immunology, Seoul National University College of Medicine
03 / Published experience

Immune phenotype & function

Collaborative high-dimensional immune profiling is paired with functional assays and clinical-severity analyses to investigate the meaning of distinct cell populations.

CyTOFviSNE / FlowSOMFlow cytometryTreg suppression assay
Supporting publications
2026 · High-dimensional immune profiling of atopic dermatitis reveals a dysfunctional OX40+ regulatory T cell subset
Co-corresponding author collaboration
  • Yong-Hee KimPB Immune Therapeutics Inc · Transplantation Research Institute, Seoul National University Medical Research Center
  • Hyun Je KimDepartment of Microbiology and Immunology, Seoul National University College of Medicine
04 / Published experience

Tissue-level validation

Immunohistochemistry, immunofluorescence and quantification connect findings from cells and data with evidence in human skin.

ImmunohistochemistryImmunofluorescenceImage quantification
Supporting publications
2022 · Histone deacetylase 4 reverses cellular senescence via DDIT4 in dermal fibroblasts
Co-corresponding author collaboration
  • Daehee HwangDepartment of Biological Sciences, Seoul National University
  • Jin Ho ChungDepartment of Dermatology, Seoul National University College of Medicine
2026 · High-dimensional immune profiling of atopic dermatitis reveals a dysfunctional OX40+ regulatory T cell subset
Co-corresponding author collaboration
  • Yong-Hee KimPB Immune Therapeutics Inc · Transplantation Research Institute, Seoul National University Medical Research Center
  • Hyun Je KimDepartment of Microbiology and Immunology, Seoul National University College of Medicine
05 / Published experience

Multidisciplinary skin–brain studies

Collaborative studies connect mouse skin-exposure models with LC–MS, pharmacological perturbation, behavior, electrophysiology and tissue analysis.

LC–MSReceptor antagonismBehavioral testingHippocampal electrophysiology
Supporting publications
2024 · Chronic ultraviolet irradiation induces memory deficits via dysregulation of the dopamine pathway
Co-corresponding author collaboration
  • Jin Ho ChungDepartment of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine
  • Yong-Seok LeeDepartment of Physiology, Seoul National University College of Medicine
06 / Published experience

Skin imaging & data-analysis collaborations

We collaborate with optical and engineering researchers on skin-image interpretation and quantitative assessment. Image processing and AI-based analyses are used where relevant to the research question, with attention to clinical meaning and applicability.

Skin imagingImage processingQuantitative assessment
Supporting publications
2023 · Practical Training Approaches for Discordant Atopic Dermatitis Severity Datasets: Merging Methods With Soft-Label and Train-Set Pruning
Co-corresponding author collaboration
  • Jung-Im NaDepartment of Dermatology, Seoul National University Bundang Hospital · Seoul National University College of Medicine
2023 · Multi-Task and Few-Shot Learning-Based Fully Automatic Deep Learning Platform for Mobile Diagnosis of Skin Diseases
Co-corresponding author collaboration
  • Jae Youn HwangDepartment of Electrical Engineering and Computer Science, The Interdisciplinary Studies of Artificial Intelligence, DGIST
07 / Published experience

Medical devices, EBD & outcome assessment

Our clinical study used 3D imaging to quantify facial-pore changes after combined microfocused ultrasound and intradermal incobotulinumtoxin-A, connecting treatment conditions with objective outcome assessment.

Microfocused ultrasound3D imaging / pore quantificationClinical outcome assessment

Specialized platforms and analyses include work with collaborators and research facilities. Experimental design, analytical scope and contributions are discussed for each project.

A question we could test together?