Abstract Background Mutations in keratin proteins have been vastly associated with a wide array of genodermatoses; however, mutations of keratins in psoriasis have not been fully investigated. The main aim of the current research was to identify the mutation in K14, K10, K16, and K17 genes in two stages of psoriasis patients. Methods Ninety-six psoriatic skin biopsies were collected. mRNA transcript of K14, K10, K16, and K17 was prepared, amplified, and sequenced. Sanger sequences of all keratins were further validated for mutational analysis using Mutation Surveyor and Alamut Visual. Then, in silico analysis of protein stability and protein and gene expression of all keratins was performed and validated. Results Out of 44 mutations, about 75% of keratins are highly pathogenic and deleterious. Remaining 25% mutations are less pathogenic and tolerated in nature. In these 33 deleterious mutations were immensely found to decrease keratin protein stability. We also found a correlation between keratin and Psoriasis Area and Severity Index score which added that alteration in keratin gene in skin causes severity of psoriasis. Conclusions We strongly concluded that acanthosis and abnormal terminal differentiation was mainly due to the mutation in epidermal keratins. In turn, disease severity and relapsing of psoriasis are mainly due to the mutation of hyperproliferative keratins. These novel keratin mutations in psoriatic epidermis might be one of the causative factors for psoriasis.

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psoriatic protein and gene expression protein stability skin acanthosis k14 k10 k16 and k17 genes mutations mutation surveyor and alamut visual psoriasis area and severity index score epidermal keratins hyperproliferative keratin proteins abnormal terminal differentiation

Tamilselvi Elango,Jingying Sun,Caihong Zhu,Fusheng Zhou,Yaohua Zhang,Liangdan Sun,Sen Yang,Xuejun Zhang,.Mutational analysis of epidermal and hyperproliferative type I keratins in mild and moderate psoriasis vulgaris patients: a possible role in the pathogenesis of psoriasis along with disease severity. 12 (1),.

Tamilselvi Elango,Jingying Sun,Caihong Zhu,Fusheng Zhou,Yaohua Zhang,Liangdan Sun,Sen Yang,Xuejun Zhang,"Mutational analysis of epidermal and hyperproliferative type I keratins in mild and moderate psoriasis vulgaris patients: a possible role in the pathogenesis of psoriasis along with disease severity" 12

Tamilselvi Elango,Jingying Sun,Caihong Zhu,Fusheng Zhou,Yaohua Zhang,Liangdan Sun,Sen Yang,Xuejun Zhang,"Mutational analysis of epidermal and hyperproliferative type I keratins in mild and moderate psoriasis vulgaris patients: a possible role in the pathogenesis of psoriasis along with disease severity"