RT Journal Article SR Electronic T1 HCV poly U/UC sequence–induced inflammation leads to metabolic disorders in vulvar lichen sclerosis JF Life Science Alliance JO Life Sci. Alliance FD Life Science Alliance LLC SP e202000906 DO 10.26508/lsa.202000906 VO 4 IS 8 A1 Qing Cong A1 Xiao Guo A1 Shengwei Zhang A1 Jinhui Wang A1 Yi Zhu A1 Lili Wang A1 Guangxing Lu A1 Yufeng Zhang A1 Wei Fu A1 Liying Zhou A1 Shuaikang Wang A1 Cenxi Liu A1 Jia Song A1 Chaoyong Yang A1 Chi Luo A1 Ting Ni A1 Long Sui A1 He Huang A1 Jin Li YR 2021 UL https://www.life-science-alliance.org/content/4/8/e202000906.abstract AB Vulvar lichen sclerosis (VLS) is a dermatologic disorder that affects women worldwide. Women with VLS have white, atrophic papules on the vulva. They suffer from life-long intense pruritus. Corticosteroids are the first-line of treatments and the most effective medicines for VLS. Although VLS has been speculated as an autoimmune disease for a long time, its pathogenesis and the molecular mechanism is largely unknown. We performed a comprehensive multi-omics analysis of paired samples from VLS patients as well as healthy donors. From the RNA-seq analysis, we found that VLS is correlated to abnormal antivirus response because of the presence of Hepatitis C Virus poly U/UC sequences. Lipidomic and metabolomic analysis revealed that inflammation-induced metabolic disorders of fatty acids and glutathione were likely the reasons for pruritus, atrophy, and pigment loss in the vulva. Thus, the present study provides an initial interpretation of the pathogenesis and molecular mechanism of VLS and suggests that metabolic disorders that affect the vulva may serve as therapeutic targets for VLS.