Evidence map›Paper›PMID 42948665›Full record

ArticleDrug design, development and therapy2026

L-Citrulline Attenuates Keratinocyte Activation and Modulates ASS1 Expression in Psoriasis-Like Mice.

Shuang Yang, Yang Chen, Zhuli Li, Jinlin Liu, Yanteng Zhao, Xiaoyan Zhang, Qiankun Yang

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Article in Drug design, development and therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Shuang YangDepartment of Blood Transfusion, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
Yang ChenDepartment of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
Zhuli LiDepartment of Blood Transfusion, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
Jinlin LiuDepartment of Blood Transfusion, Fuwai Central China Cardiovascular Hospital, Zhengzhou, People's Republic of China.
Yanteng ZhaoDepartment of Blood Transfusion, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
Xiaoyan ZhangDepartment of Blood Transfusion, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.
Qiankun YangDepartment of Blood Transfusion, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: Psoriasis is a common chronic inflammatory skin disease with a high prevalence, which seriously impairs patients' quality of life. Although the clinical application of biologics has achieved satisfactory therapeutic effects, it still has certain limitations, such as high recurrence rate and poor clinical response in some patients. Therefore, it is urgent to further explore the pathogenesis of psoriasis to identify novel research directions and therapeutic targets for the prevention and treatment of this disease. Methods: An imiquimod (IMQ)-induced psoriasis-like mouse model was established in this study. Multi-omics profiling and molecular biological experiments were performed to explore the regulatory mechanism underlying psoriasis progression. Keratinocyte functional assays and pharmacological intervention were conducted to verify the biological function of L-citrulline and ASS1. Results: L-citrulline levels were significantly decreased in the lesional skin of psoriatic mice. L-citrulline treatment substantially alleviated psoriasis-like pathological phenotypes and restrained keratinocyte hyperactivation, including excessive proliferation, migration, and inflammatory responses. Mechanistically, L-citrulline markedly downregulated the expression of ASS1, which was highly upregulated in psoriatic skin lesions. Functional validation demonstrated that ASS1 overexpression promoted keratinocyte activation, whereas pharmacological inhibition of ASS1 efficiently suppressed keratinocyte hyperactivation in vitro and ameliorated IMQ-induced psoriasis-like skin lesions in vivo. Conclusion: ASS1 serves as a critical regulator and promising therapeutic target for psoriasis. L-citrulline supplementation or ASS1 inhibition effectively blocks keratinocyte hyperactivation and retards psoriasis progression, providing a novel and feasible therapeutic strategy for psoriasis treatment.

Indexed as

CitrullineKeratinocytesPsoriasisAnimalsCell ProliferationCells, CulturedDisease Models, AnimalHumansImiquimodMaleMiceCitrullineImiquimodASS1inflammationkeratinocyteL-citrullinepsoriasis

Identifiers

PMID42948665
PMCPMC13712154

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.