Distinct circulating monocytes up-regulate CD52 and sustain innate immune function in patients with cirrhosis unless acute decompensation emerges
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PROVIDER: PRJNA1095842 | ENA |
REPOSITORIES: ENA
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Project description:Background & Aims: Infectious complications determine the prognosis of cirrhosis patients. Their infection susceptibility relates to the development of immuneparesis, a complex interplay of different immunosuppressive cells and soluble factors. Mechanisms underlying the dynamics of immuneparesis of innate immunity remain inconclusive. We aimed to dissect the heterogeneity of circulating monocyte states in different cirrhosis stages, and pursued the function of selected differentially expressed (DE) genes. Methods: We systematically investigated circulating monocytes in health, compensated and not-acutely decompensated (NAD) cirrhosis using single cell RNA sequencing. Selective genes were confirmed by flow cytometry and diverse functional assays on monocytes ex vivo. Results: We identified seven monocyte clusters. Their abundances varied between cirrhosis stages, confirming previously reported changes i.e. reduction in CD14lowCD16++ and emergence of M-MDSC in advanced stages. DE genes between health and disease and among stages were detected, including for the first time CD52. CD52-expression on monocytes significantly enhanced throughout compensated and NAD cirrhosis. Heretofore the biological significance of CD52-expression on mon enhanced migratory potential, increased cytokine production, but poor T cell activation. Following acute decompensation (AD), CD52 was cleaved by elevated phospholipase C (PLC), and soluble CD52 (sCD52) was detected in the circulation. Inhibition and cleavage of CD52 significantly suppressed monocyte functions ex vivo and in vitro, and the predominance of immunosuppressive CD52low circulating monocytes in patients with AD was associated with infection and low transplant-free survival. Conclusion: CD52 may represent a biologically relevant target for future immunotherapy. Stabilising CD52 may enhance monocyte functions and infection control in the context of cirrhosis, guided by sCD52/PLC as biomarkers indicating immuneparesis.ocytes remained unknown. CD52highCD14+CD16highHLA-DRhigh monocytes in patients with cirrhosis revealed a functional phenotype of active phagocytes with enhanced migratory potential, increased cytokine production, but poor T cell activation. Following acute decompensation (AD), CD52 was cleaved by elevated phospholipase C (PLC), and soluble CD52 (sCD52) was detected in the circulation. Inhibition and cleavage of CD52 significantly suppressed monocyte functions ex vivo and in vitro, and the predominance of immunosuppressive CD52low circulating monocytes in patients with AD was associated with infection and low transplant-free survival. Conclusion: CD52 may represent a biologically relevant target for future immunotherapy. Stabilising CD52 may enhance monocyte functions and infection control in the context of cirrhosis, guided by sCD52/PLC as biomarkers indicating immuneparesis.
2025-01-15 | GSE263100 | GEO
Project description:OBJECTIVE: The number of patients with HCV-related cirrhosis is increasing, leading to a rising risk of complications and death. Prognostic stratification in patients with early-stage cirrhosis is still challenging. We aimed to develop and validate a clinically useful prognostic index based on genomic and clinical variables to identify patients at high risk of disease progression. DESIGN: We developed a prognostic index, comprised of a 186-gene signature validated in our previous genome-wide profiling study, bilirubin (>1?mg/dL) and platelet count (<100?000/mm3), in an Italian HCV cirrhosis cohort (training cohort, n=216, median follow-up 10?years). The gene signature test was implemented using a digital transcript counting (nCounter) assay specifically developed for clinical use and the prognostic index was evaluated using archived specimens from an independent cohort of HCV-related cirrhosis in the USA (validation cohort, n=145, median follow-up 8?years). RESULTS: In the training cohort, the prognostic index was associated with hepatic decompensation (HR=2.71, p=0.003), overall death (HR=6.00, p<0.001), hepatocellular carcinoma (HR=3.31, p=0.001) and progression of Child-Turcotte-Pugh class (HR=6.70, p<0.001). The patients in the validation cohort were stratified into high-risk (16%), intermediate-risk (42%) or low-risk (42%) groups by the prognostic index. The high-risk group had a significantly increased risk of hepatic decompensation (HR=7.36, p<0.001), overall death (HR=3.57, p=0.002), liver-related death (HR=6.49, p<0.001) and all liver-related adverse events (HR=4.98, p<0.001). CONCLUSIONS: A genomic and clinical prognostic index readily available for clinical use was successfully validated, warranting further clinical evaluation for prognostic prediction and clinical trial stratification and enrichment for preventive interventions. 145 liver tissue needle biopsy specimens from U.S. HCV cirrhosis cohort patients with histologically proven cirrhosis lacking evidence and a history of hepatic decompensation or HCC.
2014-08-22 | E-GEOD-54100 | biostudies-arrayexpress
Project description:OBJECTIVE: The number of patients with HCV-related cirrhosis is increasing, leading to a rising risk of complications and death. Prognostic stratification in patients with early-stage cirrhosis is still challenging. We aimed to develop and validate a clinically useful prognostic index based on genomic and clinical variables to identify patients at high risk of disease progression. DESIGN: We developed a prognostic index, comprised of a 186-gene signature validated in our previous genome-wide profiling study, bilirubin (>1 mg/dL) and platelet count (<100 000/mm3), in an Italian HCV cirrhosis cohort (training cohort, n=216, median follow-up 10 years). The gene signature test was implemented using a digital transcript counting (nCounter) assay specifically developed for clinical use and the prognostic index was evaluated using archived specimens from an independent cohort of HCV-related cirrhosis in the USA (validation cohort, n=145, median follow-up 8 years). RESULTS: In the training cohort, the prognostic index was associated with hepatic decompensation (HR=2.71, p=0.003), overall death (HR=6.00, p<0.001), hepatocellular carcinoma (HR=3.31, p=0.001) and progression of Child-Turcotte-Pugh class (HR=6.70, p<0.001). The patients in the validation cohort were stratified into high-risk (16%), intermediate-risk (42%) or low-risk (42%) groups by the prognostic index. The high-risk group had a significantly increased risk of hepatic decompensation (HR=7.36, p<0.001), overall death (HR=3.57, p=0.002), liver-related death (HR=6.49, p<0.001) and all liver-related adverse events (HR=4.98, p<0.001). CONCLUSIONS: A genomic and clinical prognostic index readily available for clinical use was successfully validated, warranting further clinical evaluation for prognostic prediction and clinical trial stratification and enrichment for preventive interventions. 90 liver tissue needle biopsy specimens from patients with histologically proven cirrhosis lacking evidence and a history of hepatic decompensation or HCC.
2014-08-22 | E-GEOD-54099 | biostudies-arrayexpress
Project description:Recombinant soluble human CD52 was produced in HEK293 cells and tested for immunosuppressive activity.
2025-05-07 | PXD056562 | Pride
Project description:CD52 is a 12 amino acid glycoprotein that is widely expressed on lymphocytes. In T cells, the soluble form of CD52 has been shown to inhibit TCR function by binding Siglec-10. In Monocytes, soluble CD52 has been shown to inhibit TLR signaling and induces apoptosis at high concentrations. To assess the impact of CD52 on B cell function, we left B cells either untreated or exposed to recombinant CD52-Fc for 6 hours prior to lysis and bulk RNA-sequencing. Gene expression analysis revealed that soluble CD52 induced downregulation of immunoglobulin and B cell receptor related genes such as CD19 and CD22. Therefore, soluble CD52 appears to have a suppressive role on B cell function.
2020-12-14 | GSE163123 | GEO
Project description:Rattus norvegicus Cd52, CD52 molecule [Source:RGD Symbol;Acc:620627], is differentially expressed in 19 experiment(s);
| ENSRNOG00000015403 | ExpressionAtlas
Project description:Rattus norvegicus Cd52, CD52 molecule [Source:RGD Symbol;Acc:620627], is expressed in 3 baseline experiment(s);
| ENSRNOG00000015403 | ExpressionAtlas
Project description:Homo sapiens CD52, CD52 molecule [Source:HGNC Symbol;Acc:HGNC:1804], is differentially expressed in 127 experiment(s);
| ENSG00000169442 | ExpressionAtlas
Project description:Equus caballus CD52, CD52 molecule [Source:VGNC Symbol;Acc:VGNC:58144], is expressed in 1 baseline experiment(s);
| ENSECAG00000009733 | ExpressionAtlas
Project description:Homo sapiens CD52, CD52 molecule [Source:HGNC Symbol;Acc:HGNC:1804], is expressed in 38 baseline experiment(s);
| ENSG00000169442 | ExpressionAtlas