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  1. Article ; Online: mpwR: an R package for comparing performance of mass spectrometry-based proteomic workflows.

    Kardell, Oliver / Breimann, Stephan / Hauck, Stefanie M

    Bioinformatics (Oxford, England)

    2023  Volume 39, Issue 6

    Abstract: Summary: mpwR is an R package for a standardized comparison of mass spectrometry (MS)-based proteomic label-free workflows recorded by data-dependent or data-independent spectral acquisition. The user-friendly design allows easy access to compare the ... ...

    Abstract Summary: mpwR is an R package for a standardized comparison of mass spectrometry (MS)-based proteomic label-free workflows recorded by data-dependent or data-independent spectral acquisition. The user-friendly design allows easy access to compare the influence of sample preparation procedures, combinations of liquid chromatography (LC)-MS setups, as well as intra- and inter-software differences on critical performance measures across an unlimited number of analyses. mpwR supports outputs of commonly used software for bottom-up proteomics, such as ProteomeDiscoverer, Spectronaut, MaxQuant, and DIA-NN.
    Availability and implementation: mpwR is available as an open-source R package. Release versions can be accessed on CRAN (https://CRAN.R-project.org/package=mpwR) for all major operating systems. The development version is maintained on GitHub (https://github.com/okdll/mpwR) and full documentation with examples and workflow templates is provided via the package website (https://okdll.github.io/mpwR/).
    MeSH term(s) Proteomics/methods ; Workflow ; Mass Spectrometry/methods ; Software ; Chromatography, Liquid/methods
    Language English
    Publishing date 2023-06-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1422668-6
    ISSN 1367-4811 ; 1367-4803
    ISSN (online) 1367-4811
    ISSN 1367-4803
    DOI 10.1093/bioinformatics/btad358
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The novel pre-rRNA detection workflow "Riboprobing" allows simple identification of undescribed RNA species.

    Gerhalter, Magdalena / Kofler, Lisa / Zisser, Gertrude / Merl-Pham, Juliane / Hauck, Stefanie M / Bergler, Helmut

    RNA (New York, N.Y.)

    2024  

    Abstract: Ribosomes translate mRNA into proteins and are essential for every living organism. In eukaryotes both ribosomal subunits are rapidly assembled in a strict hierarchical order, starting in the nucleolus with transcription of a common precursor ribosomal ... ...

    Abstract Ribosomes translate mRNA into proteins and are essential for every living organism. In eukaryotes both ribosomal subunits are rapidly assembled in a strict hierarchical order, starting in the nucleolus with transcription of a common precursor ribosomal RNA (pre-rRNA). This pre-rRNA encodes three of the four mature rRNAs which are formed by several, consecutive endonucleolytic and exonucleolytic processing steps. Historically, Northern Blots are used to analyze the variety of different pre-rRNA species, only allowing rough length estimations. Although this limitation can be overcome with Primer Extension, both approaches often use radioactivity and are time consuming and costly. Here we present "Riboprobing" a reverse transcription-based workflow extended by linker ligation for easy and fast detection and characterization of various pre-rRNA species and their 5` as well as 3` ends. Using standard molecular biology lab equipment, our technique allows reliable discrimination of pre-rRNA species not resolved by Northern Blotting (e.g.: 27SA2, 27SA3 and 27SB). The method can be successfully used for analysis of total cell extracts as well as purified pre-ribosomes for a straightforward evaluation of the impact of mutant gene versions or inhibitors. In the course of method development, we identified and characterized a hitherto undescribed aberrant pre-rRNA, arising from LiCl inhibition. This pre-rRNA fragment spans from processing site A1 to E, forming a small RNP that is lacking most early joining assembly factors. This finding expands our knowledge of how the cell deals with severe pre-rRNA processing defects and demonstrates the strict requirement for the 5'ETS for the assembly process.
    Language English
    Publishing date 2024-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1241540-6
    ISSN 1469-9001 ; 1355-8382
    ISSN (online) 1469-9001
    ISSN 1355-8382
    DOI 10.1261/rna.079912.123
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Associations of Proteomics With Hypertension and Systolic Blood Pressure: KORA S4/F4/FF4 and KORA Age1/Age2 Cohort Studies.

    Lin, Jie-Sheng / Petrera, Agnese / Hauck, Stefanie M / Müller, Christian L / Peters, Annette / Thorand, Barbara

    Hypertension (Dallas, Tex. : 1979)

    2024  Volume 81, Issue 5, Page(s) 1156–1166

    Abstract: Background: Hypertension, a complex condition, is primarily defined based on blood pressure readings without involving its pathophysiological mechanisms. We aimed to identify biomarkers through a proteomic approach, thereby enhancing the future ... ...

    Abstract Background: Hypertension, a complex condition, is primarily defined based on blood pressure readings without involving its pathophysiological mechanisms. We aimed to identify biomarkers through a proteomic approach, thereby enhancing the future definition of hypertension with insights into its molecular mechanisms.
    Methods: The discovery analysis included 1560 participants, aged 55 to 74 years at baseline, from the KORA (Cooperative Health Research in the Region of Augsburg) S4/F4/FF4 cohort study, with 3332 observations over a median of 13.4 years of follow-up. Generalized estimating equations were used to estimate the associations of 233 plasma proteins with hypertension and systolic blood pressure (SBP). For validation, proteins significantly associated with hypertension or SBP in the discovery analysis were validated in the KORA Age1/Age2 cohort study (1024 participants, 1810 observations). A 2-sample Mendelian randomization analysis was conducted to infer causalities of validated proteins with SBP.
    Results: Discovery analysis identified 49 proteins associated with hypertension and 99 associated with SBP. Validation in the KORA Age1/Age2 study replicated 7 proteins associated with hypertension and 23 associated with SBP. Three proteins, NT-proBNP (N-terminal pro-B-type natriuretic peptide), KIM1 (kidney injury molecule 1), and OPG (osteoprotegerin), consistently showed positive associations with both outcomes. Five proteins demonstrated potential causal associations with SBP in Mendelian randomization analysis, including NT-proBNP and OPG.
    Conclusions: We identified and validated 7 hypertension-associated and 23 SBP-associated proteins across 2 cohort studies. KIM1, NT-proBNP, and OPG demonstrated robust associations, and OPG was identified for the first time as associated with blood pressure. For NT-proBNP (protective) and OPG, causal associations with SBP were suggested.
    MeSH term(s) Humans ; Blood Pressure/physiology ; Cohort Studies ; Proteomics ; Hypertension ; Biomarkers ; Natriuretic Peptide, Brain ; Peptide Fragments
    Chemical Substances Biomarkers ; Natriuretic Peptide, Brain (114471-18-0) ; Peptide Fragments
    Language English
    Publishing date 2024-03-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 423736-5
    ISSN 1524-4563 ; 0194-911X ; 0362-4323
    ISSN (online) 1524-4563
    ISSN 0194-911X ; 0362-4323
    DOI 10.1161/HYPERTENSIONAHA.123.22614
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Unveiling Differential Responses of Granulocytes to Distinct Immunostimulants with Implications in Autoimmune Uveitis.

    Degroote, Roxane L / Schmalen, Adrian / Hauck, Stefanie M / Deeg, Cornelia A

    Biomedicines

    2023  Volume 12, Issue 1

    Abstract: The perception of circulating granulocytes as cells with a predetermined immune response mainly triggered by pathogens is evolving, recognizing their functional heterogeneity and adaptability, particularly within the neutrophil subset. The involvement of ...

    Abstract The perception of circulating granulocytes as cells with a predetermined immune response mainly triggered by pathogens is evolving, recognizing their functional heterogeneity and adaptability, particularly within the neutrophil subset. The involvement of these cells in the pathophysiology of autoimmune uveitis has become increasingly clear, yet their exact role remains elusive. We used an equine model for autoimmune-mediated recurrent pan-uveitis to investigate early responses of granulocytes in different inflammatory environments. For this purpose, we performed differential proteomics on granulocytes from healthy and diseased horses stimulated with IL8, LPS, or PMA. Compared to healthy horses, granulocytes from the recurrent uveitis model significantly changed the cellular abundance of 384 proteins, with a considerable number of specific changes for each stimulant. To gain more insight into the functional impact of these stimulant-specific proteome changes in ERU pathogenesis, we used Ingenuity Pathway Analysis for pathway enrichment. This resulted in specific reaction patterns for each stimulant, with IL8 predominantly promoting Class I MHC-mediated antigen processing and presentation, LPS enhancing processes in phospholipid biosynthesis, and PMA, clearly inducing neutrophil degranulation. These findings shed light on the remarkably differentiated responses of neutrophils, offering valuable insights into their functional heterogeneity in a T-cell-driven disease. Raw data are available via ProteomeXchange with identifier PXD013648.
    Language English
    Publishing date 2023-12-20
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720867-9
    ISSN 2227-9059
    ISSN 2227-9059
    DOI 10.3390/biomedicines12010019
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Cathepsin S Is More Abundant in Serum of

    Duda, Heidi C / von Toerne, Christine / Korbonits, Lucia / Didier, Andrea / Scholz, Armin M / Märtlbauer, Erwin / Hauck, Stefanie M / Deeg, Cornelia A

    Metabolites

    2024  Volume 14, Issue 4

    Abstract: Mycobacterium ... ...

    Abstract Mycobacterium avium
    Language English
    Publishing date 2024-04-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662251-8
    ISSN 2218-1989
    ISSN 2218-1989
    DOI 10.3390/metabo14040215
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Addition of inflammation-related biomarkers to the CAIDE model for risk prediction of all-cause dementia, Alzheimer's disease and vascular dementia in a prospective study.

    Trares, Kira / Wiesenfarth, Manuel / Stocker, Hannah / Perna, Laura / Petrera, Agnese / Hauck, Stefanie M / Beyreuther, Konrad / Brenner, Hermann / Schöttker, Ben

    Immunity & ageing : I & A

    2024  Volume 21, Issue 1, Page(s) 23

    Abstract: Background: It is of interest whether inflammatory biomarkers can improve dementia prediction models, such as the widely used Cardiovascular Risk Factors, Aging and Dementia (CAIDE) model.: Methods: The Olink Target 96 Inflammation panel was assessed ...

    Abstract Background: It is of interest whether inflammatory biomarkers can improve dementia prediction models, such as the widely used Cardiovascular Risk Factors, Aging and Dementia (CAIDE) model.
    Methods: The Olink Target 96 Inflammation panel was assessed in a nested case-cohort design within a large, population-based German cohort study (n = 9940; age-range: 50-75 years). All study participants who developed dementia over 20 years of follow-up and had complete CAIDE variable data (n = 562, including 173 Alzheimer's disease (AD) and 199 vascular dementia (VD) cases) as well as n = 1,356 controls were selected for measurements. 69 inflammation-related biomarkers were eligible for use. LASSO logistic regression and bootstrapping were utilized to select relevant biomarkers and determine areas under the curve (AUCs).
    Results: The CAIDE model 2 (including Apolipoprotein E (APOE) ε4 carrier status) predicted all-cause dementia, AD, and VD better than CAIDE model 1 (without APOE ε4) with AUCs of 0.725, 0.752 and 0.707, respectively. Although 20, 7, and 4 inflammation-related biomarkers were selected by LASSO regression to improve CAIDE model 2, the AUCs did not increase markedly. CAIDE models 1 and 2 generally performed better in mid-life (50-64 years) than in late-life (65-75 years) sub-samples of our cohort, but again, inflammation-related biomarkers did not improve their predictive abilities.
    Conclusions: Despite a lack of improvement in dementia risk prediction, the selected inflammation-related biomarkers were significantly associated with dementia outcomes and may serve as a starting point to further elucidate the pathogenesis of dementia.
    Language English
    Publishing date 2024-04-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2168941-6
    ISSN 1742-4933
    ISSN 1742-4933
    DOI 10.1186/s12979-024-00427-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: A Lysine Residue at the C-Terminus of MHC Class I Ligands Correlates with Low C-Terminal Proteasomal Cleavage Probability.

    Schmalen, Adrian / Kammerl, Ilona E / Meiners, Silke / Noessner, Elfriede / Deeg, Cornelia A / Hauck, Stefanie M

    Biomolecules

    2023  Volume 13, Issue 9

    Abstract: The majority of peptides presented by MHC class I result from proteasomal protein turnover. The specialized immunoproteasome, which is induced during inflammation, plays a major role in antigenic peptide generation. However, other cellular proteases can, ...

    Abstract The majority of peptides presented by MHC class I result from proteasomal protein turnover. The specialized immunoproteasome, which is induced during inflammation, plays a major role in antigenic peptide generation. However, other cellular proteases can, either alone or together with the proteasome, contribute peptides to MHC class I loading non-canonically. We used an immunopeptidomics workflow combined with prediction software for proteasomal cleavage probabilities to analyze how inflammatory conditions affect the proteasomal processing of immune epitopes presented by A549 cells. The treatment of A549 cells with IFNγ enhanced the proteasomal cleavage probability of MHC class I ligands for both the constitutive proteasome and the immunoproteasome. Furthermore, IFNγ alters the contribution of the different HLA allotypes to the immunopeptidome. When we calculated the HLA allotype-specific proteasomal cleavage probabilities for MHC class I ligands, the peptides presented by HLA-A*30:01 showed characteristics hinting at a reduced C-terminal proteasomal cleavage probability independently of the type of proteasome. This was confirmed by HLA-A*30:01 ligands from the immune epitope database, which also showed this effect. Furthermore, two additional HLA allotypes, namely, HLA-A*03:01 and HLA-A*11:01, presented peptides with a markedly reduced C-terminal proteasomal cleavage probability. The peptides eluted from all three HLA allotypes shared a peptide binding motif with a C-terminal lysine residue, suggesting that this lysine residue impairs proteasome-dependent HLA ligand production and might, in turn, favor peptide generation by other cellular proteases.
    MeSH term(s) Proteasome Endopeptidase Complex ; Lysine ; Ligands ; Endopeptidases ; Epitopes ; Probability ; HLA-A Antigens
    Chemical Substances Proteasome Endopeptidase Complex (EC 3.4.25.1) ; Lysine (K3Z4F929H6) ; Ligands ; Endopeptidases (EC 3.4.-) ; Epitopes ; HLA-A Antigens
    Language English
    Publishing date 2023-08-24
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2701262-1
    ISSN 2218-273X ; 2218-273X
    ISSN (online) 2218-273X
    ISSN 2218-273X
    DOI 10.3390/biom13091300
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Proteomics of the phase angle: Results from the population-based KORA S4 study

    Huemer, Marie-Theres / Petrera, Agnese / Hauck, Stefanie M. / Drey, Michael / Peters, Annette / Thorand, Barbara

    Clinical nutrition. 2022 Aug., v. 41, no. 8

    2022  

    Abstract: The phase angle (PhA) measured with bioelectrical impedance analysis is considered to reflect the interrelated components body cell mass and fluid distribution based on technical and physical aspects of the PhA measurement. However, the biomedical ... ...

    Abstract The phase angle (PhA) measured with bioelectrical impedance analysis is considered to reflect the interrelated components body cell mass and fluid distribution based on technical and physical aspects of the PhA measurement. However, the biomedical meaning of the PhA remains vague. Previous studies mainly assessed associations of the PhA with numerous diseases and health outcomes, but few connected protein markers to the PhA. To broaden our understanding of the biomedical background of the PhA, we aimed to explore a proteomics profile associated with the PhA and related biological factors. The study sample encompassed 1484 participants (725 women and 759 men) aged 55–74 years from the population-based Cooperative Health Research in the Region of Augsburg (KORA) S4 study. Proteomics measurements were performed with a proximity extension assay. We employed boosting with stability selection to establish a set of markers that was strongly associated with the PhA from a group of 233 plasma protein markers. We integrated the selected protein markers into a network and enrichment analysis to identify gene ontology (GO) terms significantly overrepresented for the selected PhA protein markers. Boosting with stability selection identified seven protein markers that were strongly and independently associated with the PhA: N-terminal prohormone brain natriuretic peptide (NT-proBNP), insulin-like growth factor-binding protein 2 (IGFBP2), adrenomedullin (ADM), myoglobin (MB), matrix metalloproteinase-9 (MMP9), protein-glutamine gamma-glutamyltransferase 2 (TGM2), and fractalkine (CX3CL1) [beta coefficient per 1 standard deviation increase in normalized protein expression values on a log 2 scale (95% confidence interval): −0.12 (−0.15, −0.08), −0.13 (−0.17, −0.09), −0.14 (−0.18, −0.10), 0.10 (0.07, 0.14), 0.07 (0.04, 0.10), 0.08 (0.05, 0.11), −0.06 (−0.10, −0.03), respectively]. According to the enrichment analysis, this protein profile was significantly overrepresented in the following top five GO terms: positive regulation of cell population proliferation (p-value: 1.32E-04), extracellular space (p-value: 1.34E-04), anatomical structure formation involved in morphogenesis (p-value: 2.92E-04), regulation of multicellular organismal development (p-value: 5.72E-04), and metal ion homeostasis (p-value: 8.86E-04). Implementing a proteomics approach, we identified six new protein markers strongly associated with the PhA and confirmed that NT-proBNP is a key PhA marker. The main biological processes that were related to this PhA's protein profile are involved in regulating the amount and growth of cells, reinforcing, from a biomedical perspective, the current technical-based consensus of the PhA to reflect body cell mass.
    Keywords bioelectrical impedance ; blood proteins ; brain ; chemokine CX3CL1 ; clinical nutrition ; confidence interval ; extracellular space ; gelatinase B ; gene ontology ; homeostasis ; insulin-like growth factor binding proteins ; morphogenesis ; myoglobin ; natriuretic peptides ; protein composition ; protein synthesis ; protein-glutamine gamma-glutamyltransferase ; proteomics ; standard deviation
    Language English
    Dates of publication 2022-08
    Size p. 1818-1826.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 604812-2
    ISSN 1532-1983 ; 0261-5614
    ISSN (online) 1532-1983
    ISSN 0261-5614
    DOI 10.1016/j.clnu.2022.06.038
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: Adipose microtissue-on-chip: a 3D cell culture platform for differentiation, stimulation, and proteomic analysis of human adipocytes.

    Compera, Nina / Atwell, Scott / Wirth, Johannes / von Törne, Christine / Hauck, Stefanie M / Meier, Matthias

    Lab on a chip

    2022  Volume 22, Issue 17, Page(s) 3172–3186

    Abstract: Human fat tissue has evolved to serve as a major energy reserve. An imbalance between energy intake and expenditure leads to an expansion of adipose tissue. Maintenance of this energy imbalance over long periods leads to obesity and metabolic disorders ... ...

    Abstract Human fat tissue has evolved to serve as a major energy reserve. An imbalance between energy intake and expenditure leads to an expansion of adipose tissue. Maintenance of this energy imbalance over long periods leads to obesity and metabolic disorders such as type 2 diabetes, for which a clinical cure is not yet available. In this study, we developed a microfluidic large-scale integration chip platform to automate the formation, long-term culture, and retrieval of 3D adipose microtissues to enable longitudinal studies of adipose tissue
    MeSH term(s) Adipocytes ; Adipose Tissue ; Cell Culture Techniques, Three Dimensional ; Cell Differentiation ; Diabetes Mellitus, Type 2/metabolism ; Glucose/metabolism ; Humans ; Obesity/pathology ; Proteome ; Proteomics
    Chemical Substances Proteome ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2022-08-23
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2056646-3
    ISSN 1473-0189 ; 1473-0197
    ISSN (online) 1473-0189
    ISSN 1473-0197
    DOI 10.1039/d2lc00245k
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Pre-Activated Granulocytes from an Autoimmune Uveitis Model Show Divergent Pathway Activation Profiles upon IL8 Stimulation In Vitro.

    Hoffmann, Anne L C / Hauck, Stefanie M / Deeg, Cornelia A / Degroote, Roxane L

    International journal of molecular sciences

    2022  Volume 23, Issue 17

    Abstract: In the pathophysiology of autoimmune-mediated uveitis, granulocytes have emerged as possible disease mediators and were shown to be pre-activated in equine recurrent uveitis (ERU), a spontaneous disease model. We therefore used granulocytes from ERU ... ...

    Abstract In the pathophysiology of autoimmune-mediated uveitis, granulocytes have emerged as possible disease mediators and were shown to be pre-activated in equine recurrent uveitis (ERU), a spontaneous disease model. We therefore used granulocytes from ERU horses to identify early molecular mechanisms involved in this dysregulated innate immune response. Primary granulocytes from healthy and ERU horses were stimulated with IL8, and cellular response was analyzed with differential proteomics, which revealed significant differences in protein abundance of 170 proteins in ERU. Subsequent ingenuity pathway analysis identified three activated canonical pathways "PKA signaling", "PTEN signaling" and "leukocyte extravasation". Clustered to the leukocyte extravasation pathway, we found the membrane-type GPI-anchored protease MMP25, which was increased in IL8 stimulated ERU granulocytes. These findings point to MMP25 as a possible regulator of granulocyte extravasation in uveitis and a role of this molecule in the impaired integrity of the blood-retina-barrier. In conclusion, our analyses show a clearly divergent reaction profile of pre-activated granulocytes upon IL8 stimulation and provide basic information for further in-depth studies on early granulocyte activation in non-infectious ocular diseases. This may be of interest for the development of new approaches in uveitis diagnostics and therapy. Raw data are available via ProteomeXchange with identifier PXD013648.
    MeSH term(s) Animals ; Autoimmune Diseases ; Granulocytes/metabolism ; Horse Diseases/metabolism ; Horses ; Interleukin-8 ; Proteomics ; Recurrence ; Uveitis/metabolism
    Chemical Substances Interleukin-8
    Language English
    Publishing date 2022-08-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms23179555
    Database MEDical Literature Analysis and Retrieval System OnLINE

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