2 research outputs found

    Supplementary Material for: The Tyrosine Kinase Pyk2 Contributes to Complement-Mediated Phagocytosis in Murine Macrophages

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    Proline-rich tyrosine kinase 2 (Pyk2) is a member of the focal adhesion kinase (FAK) family and is mainly expressed in neuronal and hematopoietic cells. As FAK family members are involved in signaling connections downstream of integrins, we studied the role of Pyk2 in complement-receptor 3 (CR3, also known as Mac-1, integrin α<sub>M</sub>β<sub>2</sub>, CD11b/CD18)-mediated phagocytosis, a key process in innate immunity. Using 3 independent approaches, we observed that Pyk2 contributes to CR3-dependent phagocytosis by RAW 264.7 macrophages, but is dispensable for Fcγ receptor (FcγR)-mediated uptake. Reduction of Pyk2 expression levels via siRNA, the pharmacological inhibition of Pyk2 kinase activity as well as macrophage treatment with a cell permeable TAT fusion protein containing the C-terminus of Pyk2 (TAT-PRNK) significantly impaired CR3-mediated phagocytosis without affecting FcγR-mediated uptake. In addition, Pyk2 was strongly recruited to complement opsonized <i>Escherichia coli</i> and the pharmacological inhibition of Pyk2 significantly decreased uptake of the bacteria. Finally, CRISPR/Cas-mediated disruption of the <i>pyk2</i> gene in RAW 264.7 macrophages confirmed the role of this protein tyrosine kinase in CR3-mediated phagocytosis. Together, our data demonstrate that Pyk2 selectively contributes to the coordination of phagocytosis-promoting signals downstream of CR3, but is dispensable for FcγR-mediated phagocytosis

    Supplementary Material for: Translation, cultural adaptation, and content validation of a pleural mesothelioma questionnaire to Portuguese context: a key tool for epidemiological surveillance

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    OBJECTIVE To describe the translation, cultural adaptation, and content validation process of the French National Surveillance Programme for Pleural Mesothelioma (FNSPPM) questionnaire for the Portuguese context. METHODS A search was conducted in the PubMed database and Web of Science, in the period from 1 January 1960 to 31 December 2022, to select the questionnaire. Forward and reverse translations, calculation of the content validity index (CVI) by a panel of experts (n=9), and cognitive interviewing with individuals with at least one exposure to asbestos (n=10) were performed. Experts rated items on a Likert scale (1-4) based on their relevance. The item-level content validity index (I-CVI), scale-level content validity index based on the average method (S-CVI/Ave), scale-level content validity index based on the universal agreement method (S-CVI/UA) were calculated. RESULTS The final version of the FNSPPM questionnaire for the Portuguese context resulted from a translation and content validation process. The panel of experts considered the questionnaire relevant, with an I-CVI of up to 0.78 in 68 of 69 of the questions, an S-CVI/Ave of 0.98, and an S-CVI/UA of 0.90. The participants in the cognitive interviews reported an understanding of the questionnaire. CONCLUSION A validated FNSPPM questionnaire for the Portuguese context is now available to study individuals with Pleura Mesothelioma (PM) and asbestos exposure
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