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Ten-week old MRL\/LPR mice were injected with HE4 shRNA adenovirus vector through the renal pelvis for 5 days. Renal tissues were extracted for HE and Masson staining to evaluate pathological changes and fibrosis in lupus nephritis mice. The level of urine protein was measured using a biochemical analyzer, while the expression level of HE4 and p-NF-\u03baB p65 in renal tissues was visualized using an immunofluorescence assay. The level of \u03b22-microglobulin (\u03b22-MG), neutrophil gelatinase-associated lipocalin (NGAL), and kidney injury molecule 1 (Kim-1) was determined by the immunohistochemical assay. Western blotting was used to determine the levels of C3, HE4, matrix metalloproteinase-2 (MMP2), MMP9, p-p65, prss23, and prss35 in renal tissues. Compared to wild-type C57BL\/6 mice, MRL\/LPR mice showed a marked increase in the number of glomeruli, hyperplasic basement membrane, severe infiltration of inflammatory cells in renal tubules and glomeruli, obvious necrosis in glomeruli, elevated fibrosis levels, and increased levels of urine protein, \u03b22-MG, NGAL, Kim-1, C3, HE4, MMP2, MMP9, and p-p65; and decreased levels of prss23 and prss35 were observed in MRL\/LPR mice. After the administration of the HE4 shRNA adenovirus vector, the repaired structure of renal tubules and glomeruli improved infiltration of inflammatory cells, reduced collagen fiber and urine protein, suppressed levels of C3, HE4, MMP2, MMP9, and p-P65, and facilitated the expression of prss23 and prss35 which were observed. Silencing HE4 improved renal fibrosis and inhibited inflammation in mice with lupus nephritis, which may play a role in inhibiting C3\/MMPs and promoting prss-related protein expression.<\/jats:p>","DOI":"10.1007\/s00210-023-02883-x","type":"journal-article","created":{"date-parts":[[2023,12,29]],"date-time":"2023-12-29T02:01:41Z","timestamp":1703815301000},"page":"4823-4831","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Silencing HE4 alleviates the renal fibrosis in lupus nephritis mice by regulating the C3\/MMPs\/prss axis"],"prefix":"10.1007","volume":"397","author":[{"given":"Yixia","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaorong","family":"Zhong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feng","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,12,29]]},"reference":[{"key":"2883_CR1","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1038\/s41572-019-0141-9","volume":"6","author":"HJ Anders","year":"2020","unstructured":"Anders HJ, Saxena R, Zhao MH, Parodis I, Salmon JE, Mohan C (2020) Lupus nephritis. 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