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Updated: May 14, 2025

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis
Published on: July 11, 2013
Hypoxia-induced RHCG as a key regulator in psoriasis and its modulation by secukinumab
Shun Guo1, Qian Zhang2, Yuan-Jie Liu
1Department of Dermatology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, People's Republic of China.
Rh family C-type glycoprotein (RHCG) is upregulated in psoriasis, driving keratinocyte changes and immune cell activation. Secukinumab treatment downregulates RHCG, suggesting its role in biologic therapy efficacy.
Area of Science:
- Dermatology
- Immunology
- Molecular Biology
Background:
- Psoriasis pathogenesis involves keratinocyte (KC) and immune cell interactions.
- Rh family C-type glycoprotein (RHCG) role in psoriasis is unclear, though it affects cell proliferation and differentiation.
Purpose of the Study:
- To elucidate the biological functions and pathogenic mechanisms of RHCG in psoriasis.
- To investigate RHCG's role in hypoxia-induced cellular crosstalk and its response to different treatments.
Main Methods:
- Bioinformatics approaches: spatial transcriptomics, single-cell transcriptomics, bulk data analysis.
- Validation through ex vivo experiments and clinical specimen analysis.
Main Results:
- RHCG protein was significantly upregulated in psoriatic skin, induced by hypoxia.
- RHCG enhanced KC markers (S100A, KRT17) and decreased KRT1 expression.
- RHCG overexpression increased CXCL14 secretion, activating dendritic cells.
Conclusions:
- RHCG plays a significant role in hypoxia-induced KC-immune cell crosstalk in psoriasis.
- RHCG signaling may explain the superior efficacy of biologics like secukinumab over conventional therapies.
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