1
|
Diallo I, Jacob RA, Vion E, Kozak RA, Mossman K, Provost P. Altered microRNA Transcriptome in Cultured Human Airway Cells upon Infection with SARS-CoV-2. Viruses 2023; 15:v15020496. [PMID: 36851710 PMCID: PMC9962802 DOI: 10.3390/v15020496] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/02/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Numerous proteomic and transcriptomic studies have been carried out to better understand the current multi-variant SARS-CoV-2 virus mechanisms of action and effects. However, they are mostly centered on mRNAs and proteins. The effect of the virus on human post-transcriptional regulatory agents such as microRNAs (miRNAs), which are involved in the regulation of 60% of human gene activity, remains poorly explored. Similar to research we have previously undertaken with other viruses such as Ebola and HIV, in this study we investigated the miRNA profile of lung epithelial cells following infection with SARS-CoV-2. At the 24 and 72 h post-infection time points, SARS-CoV-2 did not drastically alter the miRNome. About 90% of the miRNAs remained non-differentially expressed. The results revealed that miR-1246, miR-1290 and miR-4728-5p were the most upregulated over time. miR-196b-5p and miR-196a-5p were the most downregulated at 24 h, whereas at 72 h, miR-3924, miR-30e-5p and miR-145-3p showed the highest level of downregulation. In the top significantly enriched KEGG pathways of genes targeted by differentially expressed miRNAs we found, among others, MAPK, RAS, P13K-Akt and renin secretion signaling pathways. Using RT-qPCR, we also showed that SARS-CoV-2 may regulate several predicted host mRNA targets involved in the entry of the virus into host cells (ACE2, TMPRSS2, ADAM17, FURIN), renin-angiotensin system (RAS) (Renin, Angiotensinogen, ACE), innate immune response (IL-6, IFN1β, CXCL10, SOCS4) and fundamental cellular processes (AKT, NOTCH, WNT). Finally, we demonstrated by dual-luciferase assay a direct interaction between miR-1246 and ACE-2 mRNA. This study highlights the modulatory role of miRNAs in the pathogenesis of SARS-CoV-2.
Collapse
Affiliation(s)
- Idrissa Diallo
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Rajesh Abraham Jacob
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON L8S 4K1, Canada
- Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Elodie Vion
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Robert A. Kozak
- Division of Microbiology, Department of Laboratory Medicine & Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
| | - Karen Mossman
- McMaster Immunology Research Centre, McMaster University, Hamilton, ON L8S 4K1, Canada
- Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
- M.G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Patrick Provost
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-525-4444 (ext. 48842)
| |
Collapse
|
2
|
Diallo I, Ho J, Lambert M, Benmoussa A, Husseini Z, Lalaouna D, Massé E, Provost P. A tRNA-derived fragment present in E. coli OMVs regulates host cell gene expression and proliferation. PLoS Pathog 2022; 18:e1010827. [PMID: 36108089 PMCID: PMC9514646 DOI: 10.1371/journal.ppat.1010827] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 09/27/2022] [Accepted: 08/22/2022] [Indexed: 11/18/2022] Open
Abstract
RNA-sequencing has led to a spectacular increase in the repertoire of bacterial sRNAs and improved our understanding of their biological functions. Bacterial sRNAs have also been found in outer membrane vesicles (OMVs), raising questions about their potential involvement in bacteria-host relationship, but few studies have documented this issue. Recent RNA-Sequencing analyses of bacterial RNA unveiled the existence of abundant very small RNAs (vsRNAs) shorter than 16 nt. These especially include tRNA fragments (tRFs) that are selectively loaded in OMVs and are predicted to target host mRNAs. Here, in Escherichia coli (E. coli), we report the existence of an abundant vsRNA, Ile-tRF-5X, which is selectively modulated by environmental stress, while remaining unaffected by inhibition of transcription or translation. Ile-tRF-5X is released through OMVs and can be transferred to human HCT116 cells, where it promoted MAP3K4 expression. Our findings provide a novel perspective and paradigm on the existing symbiosis between bacteria and human cells. We previously outlined by RNA-Sequencing (RNA-seq) the existence of abundant very small (<16 nt) bacterial and eukaryote RNA (vsRNA) population with potential regulatory functions. However, it is not exceptional to see vsRNA species removed from the RNA-seq libraries or datasets because being considered as random degradation products. As a proof of concept, we present in this study a 13 nt in length isoleucine tRNA-derived fragment (Ile-tRF-5X) which is selectively modulated by nutritional and thermal stress while remaining unaffected by transcription and translation inhibitions. We also showed that OMVs and their Ile-tRF-5X vsRNAs are delivered into human HCT116 cells and both can promote host cell gene expression and proliferation. Ile-tRF-5X appears to regulate gene silencing properties of miRNAs by competition. Our findings provide a novel perspective and paradigm on the existing symbiosis between hosts and bacteria but also brings a new insight of host-pathogen interactions mediated by tRFs which remain so far poorly characterized in bacteria.
Collapse
Affiliation(s)
- Idrissa Diallo
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - Jeffrey Ho
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - Marine Lambert
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - Abderrahim Benmoussa
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - Zeinab Husseini
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
| | - David Lalaouna
- CRCHUS, RNA Group, Department of Biochemistry and Functional Genomics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Eric Massé
- CRCHUS, RNA Group, Department of Biochemistry and Functional Genomics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Patrick Provost
- CHU de Québec-Université Laval Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, Quebec, Canada
- * E-mail:
| |
Collapse
|
3
|
Diallo I, Ho J, Lalaouna D, Massé E, Provost P. RNA Sequencing Unveils Very Small RNAs With Potential Regulatory Functions in Bacteria. Front Mol Biosci 2022; 9:914991. [PMID: 35720117 PMCID: PMC9203972 DOI: 10.3389/fmolb.2022.914991] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/02/2022] [Indexed: 12/21/2022] Open
Abstract
RNA sequencing (RNA-seq) is the gold standard for the discovery of small non-coding RNAs. Following a long-standing approach, reads shorter than 16 nucleotides (nt) are removed from the small RNA sequencing libraries or datasets. The serendipitous discovery of an eukaryotic 12 nt-long RNA species capable of modulating the microRNA from which they derive prompted us to challenge this dogma and, by expanding the window of RNA sizes down to 8 nt, to confirm the existence of functional very small RNAs (vsRNAs <16 nt). Here we report the detailed profiling of vsRNAs in Escherichia coli, E. coli-derived outer membrane vesicles (OMVs) and five other bacterial strains (Pseudomonas aeruginosa PA7, P. aeruginosa PAO1, Salmonella enterica serovar Typhimurium 14028S, Legionella pneumophila JR32 Philadelphia-1 and Staphylococcus aureus HG001). vsRNAs of 8–15 nt in length [RNAs (8-15 nt)] were found to be more abundant than RNAs of 16–30 nt in length [RNAs (16–30 nt)]. vsRNA biotypes were distinct and varied within and across bacterial species and accounted for one third of reads identified in the 8–30 nt window. The tRNA-derived fragments (tRFs) have appeared as a major biotype among the vsRNAs, notably Ile-tRF and Ala-tRF, and were selectively loaded in OMVs. tRF-derived vsRNAs appear to be thermodynamically stable with at least 2 G-C basepairs and stem-loop structure. The analyzed tRF-derived vsRNAs are predicted to target several human host mRNAs with diverse functions. Bacterial vsRNAs and OMV-derived vsRNAs could be novel players likely modulating the intricate relationship between pathogens and their hosts.
Collapse
Affiliation(s)
- Idrissa Diallo
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - Jeffrey Ho
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
| | - David Lalaouna
- CRCHUS, RNA Group, Department of Biochemistry and Functional Genomics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Eric Massé
- CRCHUS, RNA Group, Department of Biochemistry and Functional Genomics, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Patrick Provost
- CHU de Québec Research Center/CHUL Pavilion, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC, Canada
- *Correspondence: Patrick Provost,
| |
Collapse
|
4
|
Diallo I, Husseini Z, Guellal S, Vion E, Ho J, Kozak RA, Kobinger GP, Provost P. Ebola Virus Encodes Two microRNAs in Huh7-Infected Cells. Int J Mol Sci 2022; 23:ijms23095228. [PMID: 35563619 PMCID: PMC9106010 DOI: 10.3390/ijms23095228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/04/2022] Open
Abstract
MicroRNAs (miRNAs) are important gene regulatory molecules involved in a broad range of cellular activities. Although the existence and functions of miRNAs are clearly defined and well established in eukaryotes, this is not always the case for those of viral origin. Indeed, the existence of viral miRNAs is the subject of intense controversy, especially those of RNA viruses. Here, we characterized the miRNA transcriptome of cultured human liver cells infected or not with either of the two Ebola virus (EBOV) variants: Mayinga or Makona; or with Reston virus (RESTV). Bioinformatic analyses revealed the presence of two EBOV-encoded miRNAs, miR-MAY-251 and miR-MAK-403, originating from the EBOV Mayinga and Makona variants, respectively. From the miRDB database, miR-MAY-251 and miR-MAK-403 displayed on average more than 700 potential human host target candidates, 25% of which had a confidence score higher than 80%. By RT-qPCR and dual luciferase assays, we assessed the potential regulatory effect of these two EBOV miRNAs on selected host mRNA targets. Further analysis of Panther pathways unveiled that these two EBOV miRNAs, in addition to general regulatory functions, can potentially target genes involved in the hemorrhagic phenotype, regulation of viral replication and modulation of host immune defense.
Collapse
Affiliation(s)
- Idrissa Diallo
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
| | - Zeinab Husseini
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
| | - Sara Guellal
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
| | - Elodie Vion
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
| | - Jeffrey Ho
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
| | - Robert A. Kozak
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada;
- Division of Microbiology, Department of Laboratory Medicine & Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
| | - Gary P. Kobinger
- Galveston National Laboratory, Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77550, USA;
| | - Patrick Provost
- Centre Hospitalier Universitaire de Québec Research Center/CHUL Pavilion, Quebec, QC G1V 4G2, Canada; (I.D.); (Z.H.); (S.G.); (E.V.); (J.H.)
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada
- Correspondence: ; Tel.: +1-418-525-4444 (ext. 48842)
| |
Collapse
|
5
|
Lambert M, Benmoussa A, Diallo I, Ouellet-Boutin K, Dorval V, Majeau N, Joly-Beauparlant C, Droit A, Bergeron A, Têtu B, Fradet Y, Pouliot F, Provost P. Identification of Abundant and Functional dodecaRNAs (doRNAs) Derived from Ribosomal RNA. Int J Mol Sci 2021; 22:9757. [PMID: 34575920 PMCID: PMC8467515 DOI: 10.3390/ijms22189757] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/02/2021] [Accepted: 09/05/2021] [Indexed: 12/17/2022] Open
Abstract
Using a modified RNA-sequencing (RNA-seq) approach, we discovered a new family of unusually short RNAs mapping to ribosomal RNA 5.8S, which we named dodecaRNAs (doRNAs), according to the number of core nucleotides (12 nt) their members contain. Using a new quantitative detection method that we developed, we confirmed our RNA-seq data and determined that the minimal core doRNA sequence and its 13-nt variant C-doRNA (doRNA with a 5' Cytosine) are the two most abundant doRNAs, which, together, may outnumber microRNAs. The C-doRNA/doRNA ratio is stable within species but differed between species. doRNA and C-doRNA are mainly cytoplasmic and interact with heterogeneous nuclear ribonucleoproteins (hnRNP) A0, A1 and A2B1, but not Argonaute 2. Reporter gene activity assays suggest that C-doRNA may function as a regulator of Annexin II receptor (AXIIR) expression. doRNAs are differentially expressed in prostate cancer cells/tissues and may control cell migration. These findings suggest that unusually short RNAs may be more abundant and important than previously thought.
Collapse
Affiliation(s)
- Marine Lambert
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Quebec City, QC G1V 4G2, Canada
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Abderrahim Benmoussa
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Quebec City, QC G1V 4G2, Canada
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Idrissa Diallo
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Quebec City, QC G1V 4G2, Canada
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Katheryn Ouellet-Boutin
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Quebec City, QC G1V 4G2, Canada
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Véronique Dorval
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
| | - Nathalie Majeau
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
| | - Charles Joly-Beauparlant
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Department of Molecular Medicine, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Arnaud Droit
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Department of Molecular Medicine, Université Laval, Quebec City, QC G1V 4G2, Canada
| | - Alain Bergeron
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Department of Surgery, Université Laval, Quebec City, QC G1R 2J6, Canada
| | - Bernard Têtu
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Yves Fradet
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Department of Surgery, Université Laval, Quebec City, QC G1R 2J6, Canada
| | - Frédéric Pouliot
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
- Department of Surgery, Université Laval, Quebec City, QC G1R 2J6, Canada
| | - Patrick Provost
- CHU de Québec Research Center/CHUL Pavilion—Université Laval, 2705 boulevard Laurier, Quebec City, QC G1V 4G2, Canada; (M.L.); (A.B.); (I.D.); (K.O.-B.); (N.M.); (C.J.-B.); (A.D.); (A.B.); (B.T.); (Y.F.); (F.P.)
- Department of Microbiology, Infectious Diseases and Immunology, Université Laval, Quebec City, QC G1V 4G2, Canada
- Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| |
Collapse
|
6
|
Vaillancourt M, Hubert A, Subra C, Boucher J, Bazié WW, Vitry J, Berrazouane S, Routy JP, Trottier S, Tremblay C, Jenabian MA, Benmoussa A, Provost P, Tessier PA, Gilbert C. Velocity Gradient Separation Reveals a New Extracellular Vesicle Population Enriched in miR-155 and Mitochondrial DNA. Pathogens 2021; 10:pathogens10050526. [PMID: 33925397 PMCID: PMC8146806 DOI: 10.3390/pathogens10050526] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/10/2021] [Accepted: 04/20/2021] [Indexed: 12/18/2022] Open
Abstract
Extracellular vesicles (EVs) and their contents (proteins, lipids, messenger RNA, microRNA, and DNA) are viewed as intercellular signals, cell-transforming agents, and shelters for viruses that allow both diagnostic and therapeutic interventions. EVs circulating in the blood of individuals infected with human immunodeficiency virus (HIV-1) may provide insights into pathogenesis, inflammation, and disease progression. However, distinguishing plasma membrane EVs from exosomes, exomeres, apoptotic bodies, virions, and contaminating proteins remains challenging. We aimed at comparing sucrose and iodixanol density and velocity gradients along with commercial kits as a means of separating EVs from HIV particles and contaminating protein like calprotectin; and thereby evaluating the suitability of current plasma EVs analysis techniques for identifying new biomarkers of HIV-1 immune activation. Multiple analysis have been performed on HIV-1 infected cell lines, plasma from HIV-1 patients, or plasma from HIV-negative individuals spiked with HIV-1. Commercial kits, the differential centrifugation and density or velocity gradients to precipitate and separate HIV, EVs, and proteins such as calprotectin, have been used. EVs, virions, and contaminating proteins were characterized using Western blot, ELISA, RT-PCR, hydrodynamic size measurement, and enzymatic assay. Conversely to iodixanol density or velocity gradient, protein and virions co-sedimented in the same fractions of the sucrose density gradient than AChE-positive EVs. Iodixanol velocity gradient provided the optimal separation of EVs from viruses and free proteins in culture supernatants and plasma samples from a person living with HIV (PLWH) or a control and revealed a new population of large EVs enriched in microRNA miR-155 and mitochondrial DNA. Although EVs and their contents provide helpful information about several key events in HIV-1 pathogenesis, their purification and extensive characterization by velocity gradient must be investigated thoroughly before further use as biomarkers. By revealing a new population of EVs enriched in miR-155 and mitochondrial DNA, this study paves a way to increase our understanding of HIV-1 pathogenesis.
Collapse
Affiliation(s)
- Myriam Vaillancourt
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
| | - Audrey Hubert
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
| | - Caroline Subra
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817, USA
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA
| | - Julien Boucher
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
| | - Wilfried Wenceslas Bazié
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Programme de Recherche sur les Maladies Infectieuses, Centre Muraz, Institut National de Santé Publique, Bobo-Dioulasso 01 BP 390, Burkina Faso
| | - Julien Vitry
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
| | - Sofiane Berrazouane
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
| | - Jean-Pierre Routy
- Chronic Viral Illness Service and Division of Hematology, McGill University Health Centre, Montréal, QC H4A 3J1, Canada;
- Infectious Diseases and Immunity in Global Health Program, Research Institute, McGill University Health Centre, Montréal, QC H4A 3J1, Canada
| | - Sylvie Trottier
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Centre de Recherche du CHU de Québec, Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Cécile Tremblay
- Centre de Recherche du Centre Hospitalier de l’Université de Montréal, Montréal, QC H3C 3J7, Canada;
- Département de Microbiologie, Infectiologie et Immunologie, Faculté de Médecine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Mohammad-Ali Jenabian
- Département des Sciences Biologiques et Centre de Recherche CERMO-FC, Université du Québec à Montréal (UQAM), Montréal, QC H2L 2C4, Canada;
| | - Abderrahim Benmoussa
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Department of Nutrition, CHU Sainte-Justine—Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Patrick Provost
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Centre de Recherche du CHU de Québec, Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Philippe A. Tessier
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Centre de Recherche du CHU de Québec, Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada
| | - Caroline Gilbert
- Centre de Recherche du CHU de Québec-Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada; (M.V.); (A.H.); (C.S.); (J.B.); (W.W.B.); (J.V.); (S.B.); (S.T.); (A.B.); (P.P.); (P.A.T.)
- Centre de Recherche du CHU de Québec, Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université Laval, T1-49, 2705 boulevard Laurier, Québec, QC G1V 4G2, Canada
- Correspondence: ; Tel.: +1-(418)-525-4444 (ext. 46107)
| |
Collapse
|
7
|
Diallo I, Ho J, Laffont B, Laugier J, Benmoussa A, Lambert M, Husseini Z, Soule G, Kozak R, Kobinger GP, Provost P. Altered microRNA Transcriptome in Cultured Human Liver Cells upon Infection with Ebola Virus. Int J Mol Sci 2021; 22:ijms22073792. [PMID: 33917562 PMCID: PMC8038836 DOI: 10.3390/ijms22073792] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 02/07/2023] Open
Abstract
Ebola virus (EBOV) is a virulent pathogen, notorious for inducing life-threatening hemorrhagic fever, that has been responsible for several outbreaks in Africa and remains a public health threat. Yet, its pathogenesis is still not completely understood. Although there have been numerous studies on host transcriptional response to EBOV, with an emphasis on the clinical features, the impact of EBOV infection on post-transcriptional regulatory elements, such as microRNAs (miRNAs), remains largely unexplored. MiRNAs are involved in inflammation and immunity and are believed to be important modulators of the host response to viral infection. Here, we have used small RNA sequencing (sRNA-Seq), qPCR and functional analyses to obtain the first comparative miRNA transcriptome (miRNome) of a human liver cell line (Huh7) infected with one of the following three EBOV strains: Mayinga (responsible for the first Zaire outbreak in 1976), Makona (responsible for the West Africa outbreak in 2013–2016) and the epizootic Reston (presumably innocuous to humans). Our results highlight specific miRNA-based immunity pathways and substantial differences between the strains beyond their clinical manifestation and pathogenicity. These analyses shed new light into the molecular signature of liver cells upon EBOV infection and reveal new insights into miRNA-based virus attack and host defense strategy.
Collapse
Affiliation(s)
- Idrissa Diallo
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Jeffrey Ho
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Benoit Laffont
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Jonathan Laugier
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Abderrahim Benmoussa
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Marine Lambert
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Zeinab Husseini
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Geoff Soule
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
| | - Robert Kozak
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
- Division of Microbiology, Department of Laboratory Medicine & Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
| | - Gary P. Kobinger
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
- Département de Microbiologie Médicale, Université du Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Patrick Provost
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Room T1-65, Quebec, QC G1V 4G2, Canada
- Correspondence: ; Tel.: +1-418-525-4444 (ext. 48842)
| |
Collapse
|
8
|
Bazié WW, Boucher J, Vitry J, Goyer B, Routy JP, Tremblay C, Trottier S, Jenabian MA, Provost P, Alary M, Gilbert C. Plasma Extracellular Vesicle Subtypes May be Useful as Potential Biomarkers of Immune Activation in People With HIV. Pathog Immun 2021; 6:1-28. [PMID: 33987483 PMCID: PMC8109236 DOI: 10.20411/pai.v6i1.384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/02/2020] [Indexed: 12/15/2022] Open
Abstract
Background Extracellular vesicles (EVs) are intercellular messengers with epigenetic potential since they can shuttle microRNA (miRNA). EVs and miRNA play a role in human immunodeficiency virus (HIV) infection immunopathogenesis. Chronic immune activation and systemic inflammation during HIV infection despite effective antiretroviral therapy (ART) are associated with non-acquired immunodeficiency syndrome (AIDS) comorbidities in people living with HIV (PLWH). Analysis of plasma EVs and their miRNA content may be useful as immune activation or inflammatory biomarkers in PLWH receiving ART. In this study, we hypothesized that the number, size, and miRNA of large and small EVs could reflect immune activation associated with an elevated CD8 T-cell count or a low CD4/CD8 ratio in PLWH. Methods Plasma EVs subtype purified from PLWH and uninfected controls were sized using dynamic light scattering and quantified using flow cytometry and acetylcholine esterase (AChE) activity. Expression of mature miRNAs miR-92, miR-155, miR-223 was measured by quantitative reverse-transcriptase polymerase chain reaction in EVs and leucocytes. Results HIV infection induces increased production of small EVs in plasma. EV subtypes were differentially enriched in miR-92, miR-155, and miR-223. Positive correlations between CD8 T-cell count and large EVs abundance and small EVs AChE activity were observed. CD4/CD8 ratio was negatively correlated with small EV AChE activity, and miRNA-155 level per small EV was negatively correlated with CD8 T-cell count. Conclusions These findings suggest that quantifying large or small EVs and profiling miRNA content per EV might provide new functional biomarkers of immune activation and inflammation.
Collapse
Affiliation(s)
- Wilfried Wenceslas Bazié
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada.,Programme de recherche sur les maladies infectieuses, Centre Muraz, Institut National de Santé Publique, Bobo-Dioulasso, Burkina Faso
| | - Julien Boucher
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Julien Vitry
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Benjamin Goyer
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Jean Pierre Routy
- Chronic Viral Illness Service and Division of Hematology, McGill University Health Centre, Montreal, QC, Canada.,Infectious Diseases and Immunity in Global Health Program, Research Institute, McGill University Health Centre, Montréal, QC, Canada
| | - Cécile Tremblay
- Centre de recherche du Centre Hospitalier de l'Université de Montréal, Montréal, QC, Canada.,Département de microbiologie, infectiologie et immunologie, Faculté de médecine, Université de Montréal, Montréal, QC, Canada
| | - Sylvie Trottier
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Mohammad-Ali Jenabian
- Département des sciences biologiques, Université de Québec à Montréal (UQAM), Montréal, QC, Canada
| | - Patrick Provost
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Michel Alary
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de médecine sociale et préventive, Faculté de médecine, Université de Laval, Québec, C, Canada.,Institut national de santé publique du Québec, Québec, QC, Canada
| | - Caroline Gilbert
- Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, Canada
| |
Collapse
|
9
|
Benmoussa A, Michel S, Gilbert C, Provost P. Isolating Multiple Extracellular Vesicles Subsets, Including Exosomes and Membrane Vesicles, from Bovine Milk Using Sodium Citrate and Differential Ultracentrifugation. Bio Protoc 2020; 10:e3636. [PMID: 33659307 DOI: 10.21769/bioprotoc.3636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/29/2020] [Accepted: 03/16/2020] [Indexed: 12/21/2022] Open
Abstract
Milk is a complex fluid that contains various types of proteins and extracellular vesicles (EVs). Some proteins can mingle with EVs, and interfere with their isolation. Among these proteins, caseins form micelles of a size comparable to milk EVs, and can thus be co-isolated with EVs. Preliminary steps that affect milk are crucial for EV isolation and impact the purity and abundance of isolated EVs. In the course of our previous works on cow's milk EVs, we found that sodium citrate (1% final), which is a biocompatible reagent capable of breaking down casein micelles into 40-nm monomers, allowed the isolation of high quantities of EVs with low coprecipitation of caseins or other contaminating proteins. Using this protocol, we successfully separated different EV subsets, characterized in depth their morphology, protein content and small RNA enrichment patterns. We were also able to describe their biological function in a mouse model of intestinal inflammation. We, hereby, detail the differential ultracentrifugation procedure that leads to high quantify, medium specificity, isolation of different milk EV subsets from the same sample. More specifically, we highlight the use of sodium citrate as a standardized approach to isolate and study milk EVs and its potential for isolation techniques other than differential ultracentrifugation.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada, Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Sara Michel
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada, Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Caroline Gilbert
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada, Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Patrick Provost
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada, Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| |
Collapse
|
10
|
Tessandier N, Melki I, Cloutier N, Allaeys I, Miszta A, Tan S, Milasan A, Michel S, Benmoussa A, Lévesque T, Côté F, McKenzie SE, Gilbert C, Provost P, Brisson AR, Wolberg AS, Fortin PR, Martel C, Boilard É. Platelets Disseminate Extracellular Vesicles in Lymph in Rheumatoid Arthritis. Arterioscler Thromb Vasc Biol 2020; 40:929-942. [PMID: 32102567 PMCID: PMC8073225 DOI: 10.1161/atvbaha.119.313698] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The lymphatic system is a circulatory system that unidirectionally drains the interstitial tissue fluid back to blood circulation. Although lymph is utilized by leukocytes for immune surveillance, it remains inaccessible to platelets and erythrocytes. Activated cells release submicron extracellular vesicles (EV) that transport molecules from the donor cell. In rheumatoid arthritis, EV accumulate in the joint where they can interact with numerous cellular lineages. However, whether EV can exit the inflamed tissue to recirculate is unknown. Here, we investigated whether vascular leakage that occurs during inflammation could favor EV access to the lymphatic system. Approach and Results: Using an in vivo model of autoimmune inflammatory arthritis, we show that there is an influx of platelet EV, but not EV from erythrocytes or leukocytes, in joint-draining lymph. In contrast to blood platelet EV, lymph platelet EV lacked mitochondrial organelles and failed to promote coagulation. Platelet EV influx in lymph was consistent with joint vascular leakage and implicated the fibrinogen receptor α2bβ3 and platelet-derived serotonin. CONCLUSIONS These findings show that platelets can disseminate their EV in fluid that is inaccessible to platelets and beyond the joint in this disease.
Collapse
Affiliation(s)
- Nicolas Tessandier
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Imene Melki
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Nathalie Cloutier
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Isabelle Allaeys
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Adam Miszta
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill (A.M., A.S.W.)
- Montreal Heart Institute, Quebec, Canada (A.M., C.M.)
| | - Sisareuth Tan
- Extracellular Vesicles and Membrane Repair, UMR-5248-CBMN CNRS-University of Bordeaux-IPB, Allée Geoffroy Saint-Hilaire, Pessac, France (S.T., A.R.B.)
| | - Andreea Milasan
- Department of Medicine, Faculty of Medicine (A.M., C.M.), Université de Montréal, Quebec, Canada
| | - Sara Michel
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Abderrahim Benmoussa
- Department of Nutrition, CHU Sainte-Justine (A.B.), Université de Montréal, Quebec, Canada
| | - Tania Lévesque
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Francine Côté
- Institut Imagine, Inserm U1163, Laboratoire Olivier Hermine, Paris, France (F.C.)
| | - Steven E McKenzie
- Cardeza Foundation for Hematological Research, Thomas Jefferson University, Philadelphia, PA (S.E.M.)
| | - Caroline Gilbert
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Patrick Provost
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
| | - Alain R Brisson
- Extracellular Vesicles and Membrane Repair, UMR-5248-CBMN CNRS-University of Bordeaux-IPB, Allée Geoffroy Saint-Hilaire, Pessac, France (S.T., A.R.B.)
| | - Alisa S Wolberg
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill (A.M., A.S.W.)
| | - Paul R Fortin
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Axe maladies infectieuses et inflammatoires, Centre de recherche du CHU de Québec-Université Laval, Québec, Canada (P.R.F., E.B.)
| | - Catherine Martel
- Department of Medicine, Faculty of Medicine (A.M., C.M.), Université de Montréal, Quebec, Canada
- Montreal Heart Institute, Quebec, Canada (A.M., C.M.)
| | - Éric Boilard
- From the Centre de recherche du CHU de Québec, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Département de microbiologie-infectiologie et d'immunologie, Université Laval, QC, Canada (N.T., I.M., N.C., I.A., S.M., T.L., C.G., P.P., P.R.F., E.B.)
- Axe maladies infectieuses et inflammatoires, Centre de recherche du CHU de Québec-Université Laval, Québec, Canada (P.R.F., E.B.)
| |
Collapse
|
11
|
Diallo I, Benmoussa A, Laugier J, Osman A, Hitzler WE, Provost P. Platelet Pathogen Reduction Technologies Alter the MicroRNA Profile of Platelet-Derived Microparticles. Front Cardiovasc Med 2020; 7:31. [PMID: 32266291 PMCID: PMC7096552 DOI: 10.3389/fcvm.2020.00031] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 02/21/2020] [Indexed: 12/11/2022] Open
Abstract
Despite improvements in donor screening and increasing efforts to avoid contamination and the spread of pathogens in clinical platelet concentrates (PCs), the risks of transfusion-transmitted infections remain important. Relying on an ultraviolet photo activation system, pathogen reduction technologies (PRTs), such as Intercept and Mirasol, utilize amotosalen, and riboflavin (vitamin B2), respectively, to mediate inactivation of pathogen nucleic acids. Although they are expected to increase the safety and prolong the shelf life of clinical PCs, these PRTs might affect the quality and function of platelets, as recently reported. Upon activation, platelets release microparticles (MPs), which are involved in intercellular communications and regulation of gene expression, thereby mediating critical cellular functions. Here, we have used small RNA sequencing (RNA-Seq) to document the effect of PRT treatment on the microRNA profiles of platelets and derived MPs. PRT treatment did not affect the microRNA profile of platelets. However, we observed a specific loading of certain microRNAs into platelet MPs, which was impaired by treatment with Intercept or its Additive solution (SSP+). Whereas, Intercept had an impact on the microRNA profile of platelet-derived MPs, Mirasol did not impact the microRNA profile of platelets and derived MPs, compared to non-treated control. Considering that platelet MPs are able to transfer their microRNA content to recipient cells, and that this content may exert biological activities, those findings suggest that PRT treatment of clinical PCs may modify the bioactivity of the platelets and MPs to be transfused and argue for further investigations into PRT-induced changes in clinical PC content and function.
Collapse
Affiliation(s)
- Idrissa Diallo
- Research Center of the CHU de Québec, Quebec, QC, Canada.,Department of Microbiology-Infectious Disease and Immunity, Faculty of Medicine, Université Laval, Quebec, QC, Canada
| | - Abderrahim Benmoussa
- Research Center of the CHU de Québec, Quebec, QC, Canada.,Department of Microbiology-Infectious Disease and Immunity, Faculty of Medicine, Université Laval, Quebec, QC, Canada
| | - Jonathan Laugier
- Research Center of the CHU de Québec, Quebec, QC, Canada.,Department of Microbiology-Infectious Disease and Immunity, Faculty of Medicine, Université Laval, Quebec, QC, Canada
| | - Abdimajid Osman
- Department of Clinical Chemistry, Linköping University, Linköping, Sweden.,Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Walter E Hitzler
- Transfusion Center, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Patrick Provost
- Research Center of the CHU de Québec, Quebec, QC, Canada.,Department of Microbiology-Infectious Disease and Immunity, Faculty of Medicine, Université Laval, Quebec, QC, Canada
| |
Collapse
|
12
|
Diallo I, Provost P. RNA-Sequencing Analyses of Small Bacterial RNAs and their Emergence as Virulence Factors in Host-Pathogen Interactions. Int J Mol Sci 2020; 21:E1627. [PMID: 32120885 PMCID: PMC7084465 DOI: 10.3390/ijms21051627] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 12/14/2022] Open
Abstract
Proteins have long been considered to be the most prominent factors regulating so-called invasive genes involved in host-pathogen interactions. The possible role of small non-coding RNAs (sRNAs), either intracellular, secreted or packaged in outer membrane vesicles (OMVs), remained unclear until recently. The advent of high-throughput RNA-sequencing (RNA-seq) techniques has accelerated sRNA discovery. RNA-seq radically changed the paradigm on bacterial virulence and pathogenicity to the point that sRNAs are emerging as an important, distinct class of virulence factors in both gram-positive and gram-negative bacteria. The potential of OMVs, as protectors and carriers of these functional, gene regulatory sRNAs between cells, has also provided an additional layer of complexity to the dynamic host-pathogen relationship. Using a non-exhaustive approach and through examples, this review aims to discuss the involvement of sRNAs, either free or loaded in OMVs, in the mechanisms of virulence and pathogenicity during bacterial infection. We provide a brief overview of sRNA origin and importance, and describe the classical and more recent methods of identification that have enabled their discovery, with an emphasis on the theoretical lower limit of RNA sizes considered for RNA sequencing and bioinformatics analyses.
Collapse
Affiliation(s)
| | - Patrick Provost
- CHUQ Research Center/CHUL, Department of Microbiology-Infectious Disease and Immunity, Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada;
| |
Collapse
|
13
|
Benmoussa A, Laugier J, Beauparlant CJ, Lambert M, Droit A, Provost P. Complexity of the microRNA transcriptome of cow milk and milk-derived extracellular vesicles isolated via differential ultracentrifugation. J Dairy Sci 2019; 103:16-29. [PMID: 31677838 DOI: 10.3168/jds.2019-16880] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/11/2019] [Indexed: 12/18/2022]
Abstract
MicroRNAs (miRNAs) are small gene-regulatory noncoding RNA that are highly enriched in cow milk. They are encapsulated in different extracellular vesicle (EV) subsets that protect them from the extracellular milieu and the harsh conditions of the gastrointestinal tract during digestion. Here, we isolated pellets enriched in 4 different EV subsets, via differential ultracentrifugation of commercial cow milk: 12,000 × g (P12K), 35,000 × g (P35K), 70,000 × g (P70K), and 100,000 × g (P100K). Small RNA sequencing (sRNA-Seq) analyses revealed an unprecedented level of diversity in the complete miRNA repertoire and features of unfractionated cow milk and derived EV subsets. Although 5 miRNA sequences represented more than 50% of all miRNAs, milk EV exhibited heterogeneous content of miRNAs and isomeric variants (termed isomiR): P100K EV were enriched in reference miRNA sequences, and P12K and P35K EV in related isomiR. Incubation of milk EV with human cultured HeLa cells led to cellular enrichment in miRNA miR-223, which was concomitant with decreased expression of a reporter gene placed under the control of miR-223, thereby demonstrating the functionality of miR-223. These results suggest that cow milk EV may transfer their miRNAs to human cells and regulate recipient cell gene expression programming in a manner as complex as that of their miRNA transcriptome. The biological activity and relevance of the different milk EV subsets and bioactive mediators, including small noncoding RNA, in health and disease, warrants further investigation.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec G1V 0A6, Canada
| | - Jonathan Laugier
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec G1V 0A6, Canada
| | - Charles Joly Beauparlant
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Axe Endocrinologie - Néphrologie du Centre de recherche du Centre Hospitalier Universitaire de Québec - Université Laval, Québec City, Québec, Canada
| | - Marine Lambert
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec G1V 0A6, Canada
| | - Arnaud Droit
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Molecular Medicine, Faculty of Medicine, Université Laval, Axe Endocrinologie - Néphrologie du Centre de recherche du Centre Hospitalier Universitaire de Québec - Université Laval, Québec City, Québec, Canada
| | - Patrick Provost
- Centre Hospitalier Universitaire de Québec Research Center/Centre Hospitalier de l'Université Laval, Quebec G1V 4G2, Canada; Department of Microbiology, Infectious Diseases and Immunology and Faculty of Medicine, Université Laval, Quebec G1V 0A6, Canada.
| |
Collapse
|
14
|
Benmoussa A, Diallo I, Salem M, Michel S, Gilbert C, Sévigny J, Provost P. Concentrates of two subsets of extracellular vesicles from cow's milk modulate symptoms and inflammation in experimental colitis. Sci Rep 2019; 9:14661. [PMID: 31601878 PMCID: PMC6787204 DOI: 10.1038/s41598-019-51092-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/20/2019] [Indexed: 12/17/2022] Open
Abstract
Extracellular vesicles (EVs) are involved in cell-to-cell communication and modulation of numerous physiological and pathological processes. EVs are found in large quantities in milk and contain several inflammation- and immunity-modulating proteins and microRNAs, through which they exert beneficial effects in several inflammatory disease models. Here, we investigated the effects of two EV subsets, concentrated from commercial cow's milk, on a murine model of colitis induced with dextran sodium sulfate (DSS). P35K EVs, isolated by ultracentrifugation at 35,000 g, and P100K EVs, isolated at 100,000 g, were previously characterized and administered by gavage to healthy and DSS-treated mice. P35K EVs and, to a lesser extent, P100K EVs improved several outcomes associated to DSS-induced colitis, modulated the gut microbiota, restored intestinal impermeability and replenished mucin secretion. Also, P35K EVs modulated innate immunity, while P100K EVs decreased inflammation through the downregulation of colitis-associated microRNAs, especially miR-125b, associated with a higher expression of the NFκB inhibitor TNFAIP3 (A20). These results suggest that different milk EV subsets may improve colitis outcomes through different, and possibly complementary, mechanisms. Further unveiling of these mechanisms might offer new opportunities for improving the life of patients with colitis and be of importance for milk processing, infant milk formulation and general public health.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Idrissa Diallo
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Mabrouka Salem
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Sara Michel
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Caroline Gilbert
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Jean Sévigny
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada
| | - Patrick Provost
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada.
- Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC, G1V 0A6, Canada.
| |
Collapse
|
15
|
Benmoussa A, Provost P. Milk MicroRNAs in Health and Disease. Compr Rev Food Sci Food Saf 2019; 18:703-722. [PMID: 33336926 DOI: 10.1111/1541-4337.12424] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/19/2018] [Accepted: 12/24/2018] [Indexed: 02/06/2023]
Abstract
MicroRNAs are small noncoding RNAs responsible for regulating 40% to 60% of gene expression at the posttranscriptional level. The discovery of circulating microRNAs in several biological fluids opened the path for their study as biomarkers and long-range cell-to-cell communication mediators. Their transfer between individuals in the case of blood transfusion, for example, and their high enrichment in milk have sparked the interest for microRNA transfer through diet, especially from mothers to infants during breastfeeding. The extension of such paradigm led to the study of milk microRNAs in the case of cow or goat milk consumption in adults. Here we provide a comprehensive critical review of the key findings surrounding milk microRNAs in human, cow, and goat milk among other species. We discuss the data on their biological properties, their use as disease biomarkers, their transfer between individuals or species, and their putative or verified functions in health and disease of infants and adult consumers. This work is based on all the literature available and integrates all the results, theories, debates, and validation studies available so far on milk microRNAs and related areas of investigations. We critically discuss the limitations and outline future aspects and avenues to explore in this rapidly growing field of research that could impact public health through infant milk formulations or new therapies. We hope that this comprehensive review of the literature will provide insight for all teams investigating milk RNAs' biological activities and help ensure the quality of future reports.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- CHUQ Research Center/CHUL, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada.,Dept. of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Univ. Laval, Quebec, QC, G1V 0A6, Canada
| | - Patrick Provost
- CHUQ Research Center/CHUL, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada.,Dept. of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Univ. Laval, Quebec, QC, G1V 0A6, Canada
| |
Collapse
|
16
|
|
17
|
Benmoussa A, Gotti C, Bourassa S, Gilbert C, Provost P. Identification of protein markers for extracellular vesicle (EV) subsets in cow's milk. J Proteomics 2018; 192:78-88. [PMID: 30153512 DOI: 10.1016/j.jprot.2018.08.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/02/2018] [Accepted: 08/20/2018] [Indexed: 12/11/2022]
Abstract
Extracellular vesicles (EVs), like exosomes, are small membrane vesicles involved in cell-to-cell communications that modulate numerous biological processes. We previously discovered a new EV subset in milk (sedimenting at 35,000 g; 35 K) that protected its cargo (RNAs and proteins) during simulated digestion and was more enriched in microRNAs than exosomes (sedimenting at 100 K). Here, we used LC-MS/MS to push further the comparison between these two pellets. Commonly used EV markers were not differentially enriched between the pellets, questioning their use with cow's milk EVs. Similarly, the majority of the quantified proteins were equally enriched between the two pellets. Nevertheless, 20 proteins were specific to 35 K, while 41 were specifically enriched in 100 K (p < 0.05), suggesting their potential use as specific markers. Loaded with these proteins, the EVs in these pellets might regulate translation, proliferation and cell survival for 35 K, and metabolism, extracellular matrix turnover and immunity for 100 K. This approach also brought new insights into milk EV-associated integrins and their possible role in specifically targeting recipient cell types. These findings may help better discriminate between milk EVs, improve our understanding of milk EV-associated protein function and their possible use as therapeutic tools for the management of immunity- and metabolism-associated disorders. WEB PAGE: http://www.crchuq.ca/en/research/researchers/4691.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Clarisse Gotti
- Proteomics Platform, Genomics Center, CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC G1V 4G2, Canada
| | - Sylvie Bourassa
- Proteomics Platform, Genomics Center, CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC G1V 4G2, Canada
| | - Caroline Gilbert
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Patrick Provost
- CHU de Québec Research Center/CHUL Pavilion, 2705 Blvd Laurier, Quebec City, QC, G1V 4G2 and Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec City, QC G1V 0A6, Canada.
| |
Collapse
|
18
|
Provost P, Merhi Y. Endothelium-derived Nitric Oxide Decreases Polymorphonuclear Leukocyte Interaction with the Deeply Injured Arterial Wall under Intermediate and High Shear Conditions. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1657656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryPrevious studies have shown that nitric oxide (NO) inhibits specific agonist-induced polymorphonuclear leukocyte (neutrophil) and platelet aggregation in vitro. However, the inhibitory effects of NO on neutrophil interaction with the deeply injured arterial wall under conditions of flow is unknown. Therefore, we investigated the influence of NO derived from the endothelium on neutrophil and platelet interactions with the downstream arterial media under controlled flow conditions. Porcine aortic media, simulating deep arterial wall injury, was exposed to flowing porcine non-anticoagulated arterial blood for 5 min at intermediate (1006 s1) and high (3397 s1) shear conditions, and deposition of radiolabeled neutrophils and platelets was quantified. Neutrophil deposition on the exposed arterial media was reduced, by more than 30%, by pretreatment of the endothelium with the physiological precursor of NO, L-arginine, from 84.1 ± 13.7 to 57.4 ± 7.2 X 103/cm2 (p < 0.05) at 1006 s*1, and from 99.3 ± 9.8 to 65.5 ± 8.7 X KP/cm2 (p < 0.05) at 3397 s1 of shear rate, relative to control. Pretreatment of the endothelium with the inactive stereoisomer D-arginine had no effect on neutrophil deposition. These specific inhibitory effects of L-arginine were completely abolished by the inhibitor of NO synthesis, N^-nitro- L-arginine methyl ester (l-NAME) at both shear rates. Endothelial pretreatment with D-arginine, or with L-arginine, in the absence or presence of l-NAME, did not significantly influence platelet interaction with the thrombogenic arterial media at intermediate and high shear rates. These results indicate that NO derived from the endothelium can modulate and has a greater influence on neutrophil, than on platelet, interaction with the injured arterial wall exposing the media under conditions of flow typical to moderately and severely stenosed arteries.
Collapse
Affiliation(s)
- Patrick Provost
- The Laboratory of Experimental Pathology, Montreal Heart Institute, and the University of Montreal Montreal Quebec, Canada
| | - Yahye Merhi
- The Laboratory of Experimental Pathology, Montreal Heart Institute, and the University of Montreal Montreal Quebec, Canada
| |
Collapse
|
19
|
Brooke MDL, Bonnaud E, Dilley BJ, Flint EN, Holmes ND, Jones HP, Provost P, Rocamora G, Ryan PG, Surman C, Buxton RT. Enhancing the value of future island eradications needs improved understanding of past outcomes. Anim Conserv 2018. [DOI: 10.1111/acv.12398] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - E. Bonnaud
- Ecologie Systématique Evolution; Université Paris-Sud; CNRS; AgroParisTech; Université Paris-Saclay; Orsay France
| | - B. J. Dilley
- FitzPatrick Institute of African Ornithology; DST-NRF Centre of Excellence; University of Cape Town; Rondebosch South Africa
| | - E. N. Flint
- US Fish and Wildlife Service; Marine National Monuments of the Pacific; Honolulu HI USA
| | | | - H. P. Jones
- Department of Biological Sciences and Institute for the Study of the Environment, Sustainability, and Energy; Northern Illinois University; DeKalb IL USA
| | - P. Provost
- Réserve Naturelle Nationale des Sept-Iles; Ligue pour la Protection des Oiseaux; Pleumeur-Bodou France
| | - G. Rocamora
- Island Biodiversity & Conservation Centre; University of Seychelles; Anse Royale and Island Conservation Society; Pointe Larue; Mahé Seychelles
| | - P. G. Ryan
- FitzPatrick Institute of African Ornithology; DST-NRF Centre of Excellence; University of Cape Town; Rondebosch South Africa
| | - C. Surman
- Halfmoon Biosciences; Ocean Beach WA Australia
| | - R. T. Buxton
- Department of Fish, Wildlife, and Conservation; Colorado State University; Fort Collins CO USA
| |
Collapse
|
20
|
Rousseau M, Duchez AC, Lee CHC, Boilard E, Laffont B, Corduan A, Provost P. Platelet microparticles reprogram macrophage gene expression and function. Thromb Haemost 2017; 115:311-23. [DOI: 10.1160/th15-05-0389] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 07/22/2015] [Indexed: 12/20/2022]
Abstract
SummaryPlatelet microparticles (MPs) represent the most abundant MPs subtype in the circulation, and can mediate intercellular communication through delivery of bioactives molecules, such as cytokines, proteins, lipids and RNAs. Here, we show that platelet MPs can be internalised by primary human macrophages and deliver functional miR-126–3p. The increase in macrophage miR-126–3p levels was not prevented by actinomycin D, suggesting that it was not due to de novo gene transcription. Platelet MPs dose-dependently downregulated expression of four predicted mRNA targets of miR-126–3p, two of which were confirmed also at the protein level. The mRNA downregulatory effects of platelet MPs were abrogated by expression of a neutralising miR-126–3p sponge, implying the involvement of miR-126–3p. Transcriptome-wide, microarray analyses revealed that as many as 66 microRNAs and 653 additional RNAs were significantly and differentially expressed in macrophages upon exposure to platelet MPs. More specifically, platelet MPs induced an upregulation of 34 microRNAs and a concomitant downregulation of 367 RNAs, including mRNAs encoding for cytokines/chemokines CCL4, CSF1 and TNF. These changes were associated with reduced CCL4, CSF1 and TNF cytokine/chemokine release by macrophages, and accompanied by a marked increase in their phagocytic capacity. These findings demonstrate that platelet MPs can modify the transcriptome of macrophages, and reprogram their function towards a phagocytic phenotype.Supplementary Material to this article is available online at www.thrombosis-online.com.
Collapse
|
21
|
Benmoussa A, Ly S, Shan ST, Laugier J, Boilard E, Gilbert C, Provost P. A subset of extracellular vesicles carries the bulk of microRNAs in commercial dairy cow's milk. J Extracell Vesicles 2017; 6:1401897. [PMID: 29904572 PMCID: PMC5994974 DOI: 10.1080/20013078.2017.1401897] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 10/31/2017] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs are small gene-regulatory RNAs that are found in various biological fluids, including milk, where they are often contained inside extracellular vesicles (EVs), like exosomes. In a previous study, we reported that commercial dairy cow's milk microRNAs resisted simulated digestion and were not exclusively associated with canonical exosomes. Here, we report the characterization of a milk EV subset that sediments at lower ultracentrifugation speeds and that contains the bulk of microRNAs. Milk EVs were isolated by differential ultracentrifugation and Iodixanol density gradient (IDG), and analysed for (1) microRNA enrichment by reverse transcription and quantitative polymerase chain reaction (RT-qPCR), and (2) EV-associated proteins by Western blot. Milk EVs were characterized further by dynamic light scattering (DLS), density measurements, fluorescent DiR and RNA labelling, high-sensitivity flow cytometry (HS-FCM), transmission electron microscopy (TEM), proteinase K and RNase A assay, and liquid chromatography tandem-mass spectrometry (LC-MS/MS). We found that the bulk of milk microRNAs (e.g., bta-miR-125b, bta-miR-148a, etc.) sediment at 12,000 g and 35,000 g. Their distribution pattern was different from that of exosome-enriched proteins, but similar to that of several proteins commonly found in milk fat globule membranes (MFGM), including xanthine dehydrogenase (XDH). These low-speed ultracentrifugation pellets contained cytoplasm-enclosing phospholipid bilayered membrane vesicles of a density comprised between 1.11 and 1.14 g/mL in Iodixanol. This milk EV subset of ~100 nm in diameter/~200 nm hydrodynamic size resisted to proteinase K digestion and protected their microRNA content from RNase A digestion. Our results support the existence of a milk EV subset pelleting at low ultracentrifugations speeds, with a protein coating comparable with MFGM, which contains and protects the bulk of milk microRNAs from degradation. This milk EV subset may represent a new EV population of interest, whose content in microRNAs and proteins supports its potential bioactivity.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Sophia Ly
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Si Ting Shan
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Jonathan Laugier
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Eric Boilard
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Caroline Gilbert
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| | - Patrick Provost
- CHUQ Research Center/CHUL Pavilion, Quebec City, Canada
- Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, Université Laval, Quebec City, Canada
| |
Collapse
|
22
|
Abstract
The transfusion of platelets is essential for diverse pathological conditions associated with thrombocytopenia or platelet disorders. To maintain optimal platelet quality and functions, platelets are stored as platelet concentrates (PCs) at room temperature under continuous agitation-conditions that are permissive for microbial proliferation. In order to reduce these contaminants, pathogen reduction technologies (PRTs) were developed by the pharmaceutical industry and subsequently implemented by blood banks. PRTs rely on chemically induced cross-linking and inactivation of nucleic acids. These technologies were initially introduced for the treatment of plasma and, more recently, for PCs given the absence of a nucleus in platelets. Several studies verified the effectiveness of PRTs to inactivate a broad array of bacteria, viruses, and parasites. However, the safety of PRT-treated platelets has been questioned in other studies, which focused on the impact of PRTs on platelet quality and functions. In this article, we review the literature regarding PRTs, and present the advantages and disadvantages related to their application in platelet transfusion medicine.
Collapse
Affiliation(s)
- Audrey Magron
- a Centre de Recherche du Centre Hospitalier Universitaire de Québec , Faculté de Médecine de l'Université Laval, Département de Microbiologie et Immunologie , Québec , QC , Canada
| | - Jonathan Laugier
- a Centre de Recherche du Centre Hospitalier Universitaire de Québec , Faculté de Médecine de l'Université Laval, Département de Microbiologie et Immunologie , Québec , QC , Canada
| | - Patrick Provost
- a Centre de Recherche du Centre Hospitalier Universitaire de Québec , Faculté de Médecine de l'Université Laval, Département de Microbiologie et Immunologie , Québec , QC , Canada
| | - Eric Boilard
- a Centre de Recherche du Centre Hospitalier Universitaire de Québec , Faculté de Médecine de l'Université Laval, Département de Microbiologie et Immunologie , Québec , QC , Canada
| |
Collapse
|
23
|
Brooke MDL, Bonnaud E, Dilley BJ, Flint EN, Holmes ND, Jones HP, Provost P, Rocamora G, Ryan PG, Surman C, Buxton RT. Seabird population changes following mammal eradications on islands. Anim Conserv 2017. [DOI: 10.1111/acv.12344] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. de L. Brooke
- Department of Zoology; University of Cambridge; Cambridge UK
| | - E. Bonnaud
- Ecologie Systématique Evolution; Université Paris-Sud; CNRS; AgroParisTech; Université Paris-Saclay; Orsay France
| | - B. J. Dilley
- FitzPatrick Institute of African Ornithology; DST-NRF Centre of Excellence; University of Cape Town; Rondebosch South Africa
| | - E. N. Flint
- US Fish and Wildlife Service; Marine National Monuments of the Pacific; Honolulu HI USA
| | | | - H. P. Jones
- Department of Biological Sciences and Institute for the Study of the Environment; Sustainability, and Energy; Northern Illinois University; DeKalb IL USA
| | - P. Provost
- Réserve Naturelle Nationale des Sept-Iles; Ligue pour la Protection des Oiseaux; Station LPO Ile-Grande; Pleumeur-Bodou France
| | - G. Rocamora
- Biodiversity & Conservation Centre; University of Seychelles; Anse Royale Seychelles
- Island Conservation Society; Pointe Larue; Mahé Seychelles
| | - P. G. Ryan
- FitzPatrick Institute of African Ornithology; DST-NRF Centre of Excellence; University of Cape Town; Rondebosch South Africa
| | - C. Surman
- Halfmoon Biosciences; Ocean Beach WA Australia
| | - R. T. Buxton
- Department of Fish, Wildlife, and Conservation; Colorado State University; Fort Collins CO USA
| |
Collapse
|
24
|
Abstract
A wide variety of clinical conditions, associated with low circulating platelet counts, require platelet transfusion in order to normalize hemostatic function. Although single-donor apheresis platelets bear the lowest risk of transfusion-transmitted infections, pathogen reduction technologies (PRT) are being implemented worldwide to reduce this risk further through inactivation of known, emergent and as yet to be discovered nucleic acid-based pathogens. Human blood platelets are now known to harbor a diverse transcriptome, important to their function and comprised of >5000 protein-coding messenger RNAs and different classes of non-coding RNAs, including microRNAs. Our appreciation of the nucleic acid-dependent functions of platelets is likely to increase. On the other hand, the side effects of PRT on platelet function are underappreciated. Recent evidences suggest that PRT may compromise platelets' responsiveness to agonists, and induce platelet activation. For instance, platelets have the propensity to release proinflammatory microparticles (MPs) upon activation, and the possibility that PRT may enhance the production of platelet MPs in platelet concentrates (PCs) appears likely. With this in mind, it would be timely and appropriate to investigate other means to inactivate pathogens more specifically, or to modify the currently available PRT so to better preserve the platelet function and improve the safety of PCs; platelets' perspective to PRT deserves to be considered.
Collapse
Affiliation(s)
- Abdimajid Osman
- a Department of Clinical Chemistry , Region Östergötland , Linköping , Sweden.,b Department of Clinical and Experimental Medicine , University of Linköping , Linköping , Sweden
| | - Walter E Hitzler
- c Transfusion Center, University Medical Center of the Johannes Gutenberg University Mainz , Hochhaus Augustusplatz , Mainz , Germany
| | - Patrick Provost
- d CHUQ Research Center/CHUL , 2705 Blvd Laurier, Quebec , QC , Canada.,e Faculty of Medicine , Université Laval , Quebec , QC , Canada
| |
Collapse
|
25
|
Provost P. The clinical significance of platelet microparticle-associated microRNAs. ACTA ACUST UNITED AC 2017; 55:657-666. [DOI: 10.1515/cclm-2016-0895] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 11/30/2016] [Indexed: 02/06/2023]
Abstract
AbstractCirculating blood platelets play a central role in the maintenance of hemostasis. They adhere to subendothelial extracellular matrix proteins that become exposed upon vessel wall damage, which is followed by platelet activation, further platelet recruitment, platelet aggregation and formation of an occlusive, or non-occlusive, platelet thrombus. Platelets host a surprisingly diverse transcriptome, which is comprised of ~9500 messenger RNAs (mRNAs) and different classes of non-coding RNAs, including microRNAs, as well as a significant repertoire of proteins that contribute to their primary (adhesion, aggregation, granule secretion) and alternative (RNA transfer, mRNA translation, immune regulation) functions. Platelets have the propensity to release microparticles (MPs; 0.1–1 μm in diameter) upon activation, which may mediate inflammatory responses and contribute to exacerbate inflammatory diseases and conditions. Carrying components of the platelets’ cytoplasm, platelet MPs may exert their effects on recipient cells by transferring their content in platelet-derived bioactive lipid mediators, cytokines, mRNAs and microRNAs. Platelet MP-associated microRNAs may thus function also outside of platelets and play an important role in intercellular signaling and gene expression programming across the entire circulatory system. The role and importance of platelet MP-associated microRNAs in various aspects of biology and pathophysiology are increasingly recognized, and now provide the scientific basis and rationale to support further translational research and clinical studies. The clinical significance, pathophysiological role as well as the diagnostic and therapeutic potential of platelet MP-associated microRNAs in cardiovascular diseases, platelet transfusion and cancer will be discussed.
Collapse
|
26
|
Benmoussa A, Lee CHC, Laffont B, Savard P, Laugier J, Boilard E, Gilbert C, Fliss I, Provost P. Commercial Dairy Cow Milk microRNAs Resist Digestion under Simulated Gastrointestinal Tract Conditions. J Nutr 2016; 146:2206-2215. [PMID: 27708120 DOI: 10.3945/jn.116.237651] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 09/02/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND MicroRNAs are small, gene-regulatory noncoding RNA species present in large amounts in milk, where they seem to be protected against degradative conditions, presumably because of their association with exosomes. OBJECTIVE We monitored the relative stability of commercial dairy cow milk microRNAs during digestion and examined their associations with extracellular vesicles (EVs). METHODS We used a computer-controlled, in vitro, gastrointestinal model TNO intestinal model-1 (TIM-1) and analyzed, by quantitative polymerase chain reaction, the concentration of 2 microRNAs within gastrointestinal tract compartments at different points in time. EVs within TIM-1 digested and nondigested samples were studied by immunoblotting, dynamic light scattering, quantitative polymerase chain reaction, and density measurements. RESULTS A large quantity of dairy milk Bos taurus microRNA-223 (bta-miR-223) and bta-miR-125b (∼109-1010 copies/300 mL milk) withstood digestion under simulated gastrointestinal tract conditions, with the stomach causing the most important decrease in microRNA amounts. A large quantity of these 2 microRNAs (∼108-109 copies/300 mL milk) was detected in the upper small intestine compartments, which supports their potential bioaccessibility. A protocol optimized for the enrichment of dairy milk exosomes yielded a 100,000 × g pellet fraction that was positive for the exosomal markers tumor susceptibility gene-101 (TSG101), apoptosis-linked gene 2-interacting protein X (ALIX), and heat shock protein 70 (HSP70) and containing bta-miR-223 and bta-miR-125b. This approach, based on successive ultracentrifugation steps, also revealed the existence of ALIX-, HSP70-/low, and TSG101-/low EVs larger than exosomes and 2-6 times more enriched in bta-miR-223 and bta-miR-125b (P < 0.05). CONCLUSIONS Our findings indicate that commercial dairy cow milk contains numerous microRNAs that can resist digestion and are associated mostly with ALIX-, HSP70-/low, and TSG101-/low EVs. Our results support the existence of interspecies transfer of microRNAs mediated by milk consumption and challenge our current view of exosomes as the sole carriers of milk-derived microRNAs.
Collapse
Affiliation(s)
- Abderrahim Benmoussa
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Chan Ho C Lee
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Benoit Laffont
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Patricia Savard
- STELA Dairy Research Center, Institute of Nutrition and Functional Foods, Université Laval, Quebec, Canada
| | - Jonathan Laugier
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Eric Boilard
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Caroline Gilbert
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| | - Ismail Fliss
- STELA Dairy Research Center, Institute of Nutrition and Functional Foods, Université Laval, Quebec, Canada
| | - Patrick Provost
- University of Quebec Hospital Center Research Center/University of Laval Hospital Center, Department of Microbiology-Infectious Disease and Immunity and Faculty of Medicine, and
| |
Collapse
|
27
|
Marcoux G, Duchez AC, Cloutier N, Provost P, Nigrovic PA, Boilard E. Revealing the diversity of extracellular vesicles using high-dimensional flow cytometry analyses. Sci Rep 2016; 6:35928. [PMID: 27786276 PMCID: PMC5081512 DOI: 10.1038/srep35928] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 10/07/2016] [Indexed: 01/12/2023] Open
Abstract
Extracellular vesicles (EV) are small membrane vesicles produced by cells upon activation and apoptosis. EVs are heterogeneous according to their origin, mode of release, membrane composition, organelle and biochemical content, and other factors. Whereas it is apparent that EVs are implicated in intercellular communication, they can also be used as biomarkers. Continuous improvements in pre-analytical parameters and flow cytometry permit more efficient assessment of EVs; however, methods to more objectively distinguish EVs from cells and background, and to interpret multiple single-EV parameters are lacking. We used spanning-tree progression analysis of density-normalized events (SPADE) as a computational approach for the organization of EV subpopulations released by platelets and erythrocytes. SPADE distinguished EVs, and logically organized EVs detected by high-sensitivity flow cytofluorometry based on size estimation, granularity, mitochondrial content, and phosphatidylserine and protein receptor surface expression. Plasma EVs were organized by hierarchy, permitting appreciation of their heterogeneity. Furthermore, SPADE was used to analyze EVs present in the synovial fluid of patients with inflammatory arthritis. Its algorithm efficiently revealed subtypes of arthritic patients based on EV heterogeneity patterns. Our study reveals that computational algorithms are useful for the analysis of high-dimensional single EV data, thereby facilitating comprehension of EV functions and biomarker development.
Collapse
Affiliation(s)
- Geneviève Marcoux
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l'Université Laval, Département de microbiologie et immunologie, Québec, QC, Canada
| | - Anne-Claire Duchez
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l'Université Laval, Département de microbiologie et immunologie, Québec, QC, Canada
| | - Nathalie Cloutier
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l'Université Laval, Département de microbiologie et immunologie, Québec, QC, Canada
| | - Patrick Provost
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l'Université Laval, Département de microbiologie et immunologie, Québec, QC, Canada
| | - Peter A Nigrovic
- Department of Medicine, Division of Rheumatology Immunology and Allergy, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Eric Boilard
- Centre de Recherche du Centre Hospitalier Universitaire de Québec, Faculté de Médecine de l'Université Laval, Département de microbiologie et immunologie, Québec, QC, Canada
| |
Collapse
|
28
|
Osman A, Hitzler WE, Provost P. Peculiarities of studying the effects of pathogen reduction technologies on platelets. Proteomics Clin Appl 2016; 10:805-15. [PMID: 27095411 DOI: 10.1002/prca.201500124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/27/2016] [Accepted: 04/14/2016] [Indexed: 12/31/2022]
Abstract
The transfusion of platelet concentrates (PCs) is mainly used for treatment of thrombocytopenic, trauma or surgery patients. The integrity and safety of these platelet preparations, however, is compromised by the presence of pathogens, such as viruses, bacteria and parasites. The transfer of allogeneic donor leukocytes contaminating PCs can also potentially cause adverse reactions in recipients. These considerations prompted the development and implementation of pathogen reduction technologies (PRT), which are based on chemically induced cross-linking and inactivation of nucleic acids. While the incumbent PRT may provide some protection against transfusion-transmitted infections, they are ineffective against infectious prions and may not inactivate other emerging pathogens. In addition, the safety of PRT concerning platelet viability and function has been questioned in several reports. Recent studies suggest that PRT, such as Intercept, may adversely affect the messenger RNA (mRNA) and microRNA content of platelets, as well as their functional integrity, which may compromise the clinical benefits of PRT. Here, we will discuss about the peculiarities of studying the effects of PRT on platelets, which will need to be taken into account in future studies aimed to characterize further, and polish, the rugged side of this otherwise useful and potentially important approach in transfusion medicine.
Collapse
Affiliation(s)
- Abdimajid Osman
- Department of Clinical Chemistry, Region Östergötland, Linköping, Sweden.,Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
| | - Walter E Hitzler
- Transfusion Center, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Patrick Provost
- CHUQ Research Center/CHUL, Quebec, QC, Canada.,Faculty of Medicine, Université Laval, Quebec, QC, Canada
| |
Collapse
|
29
|
Osman A, Hitzler WE, Ameur A, Provost P. Differential Expression Analysis by RNA-Seq Reveals Perturbations in the Platelet mRNA Transcriptome Triggered by Pathogen Reduction Systems. PLoS One 2015; 10:e0133070. [PMID: 26172280 PMCID: PMC4501785 DOI: 10.1371/journal.pone.0133070] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 06/23/2015] [Indexed: 11/18/2022] Open
Abstract
Platelet concentrates (PCs) are prepared at blood banks for transfusion to patients in certain clinical conditions associated with a low platelet count. To prevent transfusion-transmitted infections via PCs, different pathogen reduction (PR) systems have been developed that inactivate the nucleic acids of contaminating pathogens by chemical cross-linking, a mechanism that may also affect platelets' nucleic acids. We previously reported that treatment of stored platelets with the PR system Intercept significantly reduced the level of half of the microRNAs that were monitored, induced platelet activation and compromised the platelet response to physiological agonists. Using genome-wide differential expression (DE) RNA sequencing (RNA-Seq), we now report that Intercept markedly perturbs the mRNA transcriptome of human platelets and alters the expression level of >800 mRNAs (P<0.05) compared to other PR systems and control platelets. Of these, 400 genes were deregulated with DE corresponding to fold changes (FC) ≥ 2. At the p-value < 0.001, as many as 147 genes were deregulated by ≥ 2-fold in Intercept-treated platelets, compared to none in the other groups. Finally, integrated analysis combining expression data for microRNA (miRNA) and mRNA, and involving prediction of miRNA-mRNA interactions, disclosed several positive and inverse correlations between miRNAs and mRNAs in stored platelets. In conclusion, this study demonstrates that Intercept markedly deregulates the platelet mRNA transcriptome, concomitant with reduced levels of mRNA-regulatory miRNAs. These findings should enlighten authorities worldwide when considering the implementation of PR systems, that target nucleic acids and are not specific to pathogens, for the management of blood products.
Collapse
Affiliation(s)
- Abdimajid Osman
- Department of Clinical Chemistry, Region Östergötland, Ingång 64, Linköping, Sweden
- Department of Clinical and Experimental Medicine, University of Linköping, Linköping, Sweden
| | - Walter E. Hitzler
- Transfusion Center, University Medical Center of the Johannes Gutenberg University Mainz, Hochhaus Augustusplatz, Mainz, Germany
| | - Adam Ameur
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala, Uppsala University, Uppsala, Sweden
| | - Patrick Provost
- Université Laval CHUQ Research Center / CHUL 2705 Blvd Laurier, Quebec, QC, Canada
| |
Collapse
|
30
|
Elgheznawy A, Shi L, Hu J, Wittig I, Laban H, Pircher J, Mann A, Provost P, Randriamboavonjy V, Fleming I. Dicer cleavage by calpain determines platelet microRNA levels and function in diabetes. Circ Res 2015; 117:157-65. [PMID: 25944670 DOI: 10.1161/circresaha.117.305784] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 05/05/2015] [Indexed: 12/13/2022]
Abstract
RATIONALE MicroRNAs (miRNAs) are short noncoding RNA species generated by the processing of longer precursors by the ribonucleases Drosha and Dicer. Platelets contain large amounts of miRNA that are altered by disease, in particular diabetes mellitus. OBJECTIVE This study determined why platelet miRNA levels are attenuated in diabetic individuals and how decreased levels of the platelet-enriched miRNA, miR-223, affect platelet function. METHODS AND RESULTS Dicer levels were altered in platelets from diabetic mice and patients, a change that could be attributed to the cleavage of the enzyme by calpain, resulting in loss of function. Diabetes mellitus in human subjects as well as in mice resulted in decreased levels of platelet miR-142, miR-143, miR-155, and miR-223. Focusing on only 1 of these miRNAs, miR-223 deletion in mice resulted in modestly enhanced platelet aggregation, the formation of large thrombi and delayed clot retraction compared with wild-type littermates. A similar dysregulation was detected in platelets from diabetic patients. Proteomic analysis of platelets from miR-223 knockout mice revealed increased levels of several proteins, including kindlin-3 and coagulation factor XIII-A. Whereas, kindlin-3 was indirectly regulated by miR-223, factor XIII was a direct target and both proteins were also altered in diabetic platelets. Treating diabetic mice with a calpain inhibitor prevented loss of platelet dicer as well as the diabetes mellitus-induced decrease in platelet miRNA levels and the upregulation of miR-223 target proteins. CONCLUSIONS Thus, calpain inhibition may be one means of normalizing platelet miRNA processing as well as platelet function in diabetes mellitus.
Collapse
Affiliation(s)
- Amro Elgheznawy
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Lei Shi
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Jiong Hu
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Ilka Wittig
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Hebatullah Laban
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Joachim Pircher
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Alexander Mann
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Patrick Provost
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Voahanginirina Randriamboavonjy
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.)
| | - Ingrid Fleming
- From the Institute for Vascular Signaling, Centre for Molecular Medicine, and DZHK (German Centre for Cardiovascular Research) partner site Rhine-Main, Frankfurt, Germany (A.E., L.S., J.H., H.L., V.R., I.F.); Functional Proteomics, SFB 815 Core Unit, Goethe-University, Frankfurt, Germany (I.W.); Walter-Brendel-Centre of Experimental Medicine and DZHK partner site Munich Heart Alliance, Ludwig-Maximilians-Universität, Munich, Germany (J.P.); Endokrinologikum Frankfurt, Frankfurt, Germany (A.M.); and Centre Hospitalier Universitaire de Québec Research Center, and Faculty of Medicine, Université Laval, Quebec, Canada (P.P.).
| |
Collapse
|
31
|
Corduan A, Plé H, Laffont B, Wallon T, Plante I, Landry P, Provost P. Dissociation of SERPINE1 mRNA from the translational repressor proteins Ago2 and TIA-1 upon platelet activation. Thromb Haemost 2015; 113:1046-59. [PMID: 25673011 DOI: 10.1160/th14-07-0622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/26/2014] [Indexed: 11/05/2022]
Abstract
Platelets play an important role in haemostasis, as well as in thrombosis and coagulation processes. They harbour a wide variety of messenger RNAs (mRNAs), that can template de novo protein synthesis, and an abundant array of microRNAs, which are known to mediate mRNA translational repression through proteins of the Argonaute (Ago) family. The relationship between platelet microRNAs and proteins capable of mediating translational repression, however, remains unclear. Here, we report that half of platelet microRNAs is associated to mRNA-regulatory Ago2 protein complexes, in various proportions. Associated to these Ago2 complexes are platelet mRNAs known to support de novo protein synthesis. Reporter gene activity assays confirmed the capacity of the platelet microRNAs, found to be associated to Ago2 complexes, to regulate translation of these platelet mRNAs through their 3'UTR. Neither the microRNA repertoire nor the microRNA composition of Ago2 complexes of human platelets changed upon activation with thrombin. However, under conditions favoring de novo synthesis of Plasminogen Activator Inhibitor-1 (PAI-1) protein, we documented a rapid dissociation of the encoding platelet SERPINE1 mRNA from Ago2 protein complexes as well as from the translational repressor protein T-cell-restricted intracellular antigen-1 (TIA-1). These findings are consistent with a scenario by which lifting of the repressive effects of Ago2 and TIA-1 protein complexes, involving a rearrangement of proteinmRNA complexes rather than disassembly of Ago2microRNA complexes, would allow translation of SERPINE1 mRNA into PAI-1 in response to platelet activation.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Patrick Provost
- Dr. Patrick Provost, CHUQ Research Center/CHUL, 2705 Blvd Laurier, Room T1-65, Quebec, QC G1V 4G2, Canada, Tel.: +1 418 525 4444 (ext. 48842), E-mail:
| |
Collapse
|
32
|
Osman A, Hitzler WE, Meyer CU, Landry P, Corduan A, Laffont B, Boilard E, Hellstern P, Vamvakas EC, Provost P. Effects of pathogen reduction systems on platelet microRNAs, mRNAs, activation, and function. Platelets 2014; 26:154-63. [PMID: 24749844 PMCID: PMC4364275 DOI: 10.3109/09537104.2014.898178] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Pathogen reduction (PR) systems for platelets, based on chemically induced cross-linking and inactivation of nucleic acids, potentially prevent transfusion transmission of infectious agents, but can increase clinically significant bleeding in some clinical studies. Here, we documented the effects of PR systems on microRNA and mRNA levels of platelets stored in the blood bank, and assessed their impact on platelet activation and function. Unlike platelets subjected to gamma irradiation or stored in additive solution, platelets treated with Intercept (amotosalen + ultraviolet-A [UVA] light) exhibited significantly reduced levels of 6 of the 11 microRNAs, and 2 of the 3 anti-apoptotic mRNAs (Bcl-xl and Clusterin) that we monitored, compared with platelets stored in plasma. Mirasol (riboflavin + UVB light) treatment of platelets did not produce these effects. PR neither affected platelet microRNA synthesis or function nor induced cross-linking of microRNA-sized endogenous platelet RNA species. However, the reduction in the platelet microRNA levels induced by Intercept correlated with the platelet activation (p < 0.05) and an impaired platelet aggregation response to ADP (p < 0.05). These results suggest that Intercept treatment may induce platelet activation, resulting in the release of microRNAs and mRNAs from platelets. The clinical implications of this reduction in platelet nucleic acids secondary to Intercept remain to be established.
Collapse
Affiliation(s)
- Abdimajid Osman
- Division of Clinical Chemistry, Department of Clinical and Experimental Medicine, University of Linköping , Linköping , Sweden
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Rakonjac Ryge M, Tanabe M, Provost P, Persson B, Chen X, Funk CD, Rinaldo-Matthis A, Hofmann B, Steinhilber D, Watanabe T, Samuelsson B, Rådmark O. A mutation interfering with 5-lipoxygenase domain interaction leads to increased enzyme activity. Arch Biochem Biophys 2014; 545:179-85. [PMID: 24480307 DOI: 10.1016/j.abb.2014.01.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/13/2014] [Accepted: 01/17/2014] [Indexed: 01/19/2023]
Abstract
5-Lipoxygenase (5-LOX) catalyzes two steps in conversion of arachidonic acid to proinflammatory leukotrienes. Lipoxygenases, including human 5-LOX, consist of an N-terminal C2-like β-sandwich and a catalytic domain. We expressed the 5-LOX domains separately, these were found to interact in the yeast two-hybrid system. The 5-LOX structure suggested association between Arg(101) in the β-sandwich and Asp(166) in the catalytic domain, due to electrostatic interaction as well as hydrogen bonds. Indeed, mutagenic replacements of these residues led to loss of two-hybrid interaction. Interestingly, when Arg(101) was mutated to Asp in intact 5-LOX, enzyme activity was increased. Thus, higher initial velocity of the reaction (vinit) and increased final amount of products were monitored for 5-LOX-R101D, at several different assay conditions. In the 5-LOX crystal structure, helix α2 and adjacent loops (including Asp(166)) of the 5-LOX catalytic domain has been proposed to form a flexible lid controlling access to the active site, and lid movement would be determined by bonding of lid residues to the C2-like β-sandwich. The more efficient catalysis following disruption of the R101-D166 ionic association supports the concept of such a flexible lid in human 5-LOX.
Collapse
Affiliation(s)
- Marija Rakonjac Ryge
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Michiharu Tanabe
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, S-171 77 Stockholm, Sweden; Department of Neurosurgery, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, Yonago 6838504, Japan
| | - Patrick Provost
- CHUQ Research Center/CHUL, 2705 Blvd Laurier, Quebec, QC G1V 4G2, Canada; Faculty of Medicine, Université Laval, Quebec, QC G1V 0A6, Canada
| | - Bengt Persson
- Science for Life Laboratory, Dept of Cell and Molecular Biology, Uppsala University, Box 596, S-75124 Uppsala, Sweden
| | - Xinsheng Chen
- Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Colin D Funk
- Institute for Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Agnes Rinaldo-Matthis
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Bettina Hofmann
- Institute of Pharmaceutical Chemistry/ZAFES, University of Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
| | - Dieter Steinhilber
- Institute of Pharmaceutical Chemistry/ZAFES, University of Frankfurt, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
| | - Takashi Watanabe
- Department of Neurosurgery, Institute of Neurological Sciences, Faculty of Medicine, Tottori University, Yonago 6838504, Japan
| | - Bengt Samuelsson
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, S-171 77 Stockholm, Sweden
| | - Olof Rådmark
- Department of Medical Biochemistry and Biophysics, Division of Physiological Chemistry II, Karolinska Institutet, S-171 77 Stockholm, Sweden.
| |
Collapse
|
34
|
Ouellet DL, Vigneault-Edwards J, Létourneau K, Gobeil LA, Plante I, Burnett JC, Rossi JJ, Provost P. Regulation of host gene expression by HIV-1 TAR microRNAs. Retrovirology 2013; 10:86. [PMID: 23938024 PMCID: PMC3751525 DOI: 10.1186/1742-4690-10-86] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Accepted: 08/06/2013] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The transactivating response (TAR) element of human immunodeficiency virus type 1 (HIV-1) is the source of two functional microRNAs (miRNAs), miR-TAR-5p and miR-TAR-3p. The objective of this study was to characterize the post-transcriptional regulation of host messenger RNAs (mRNAs) relevant to HIV-1 pathogenesis by HIV-1 TAR miRNAs. RESULTS We demonstrated that TAR miRNAs derived from HIV-1 can incorporate into host effector Argonaute protein complexes, which is required if these miRNAs are to regulate host mRNA expression. Bioinformatic predictions and reporter gene activity assays identified regulatory elements complementary and responsive to miR-TAR-5p and miR-TAR-3p in the 3' untranslated region (UTR) of several candidate genes involved in apoptosis and cell survival. These include Caspase 8, Aiolos, Ikaros and Nucleophosmin (NPM)/B23. Analyses of Jurkat cells that stably expressed HIV-1 TAR or contained a full-length latent HIV provirus suggested that HIV-1 TAR miRNAs could regulate the expression of genes in T cells that affect the balance between apoptosis and cell survival. CONCLUSIONS HIV-1 TAR miRNAs may contribute to the replication cycle and pathogenesis of HIV-1, by regulating host genes involved in the intricate balance between apoptosis and infected cell, to induce conditions that promote HIV-1 propagation and survival.
Collapse
Affiliation(s)
- Dominique L Ouellet
- Department of Molecular and Cellular Biology, Beckman Research Institute at City of Hope, 1500 E Duarte Road, Duarte, CA 91010, USA
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Andrews RK, Aster RH, Atkinson BT, Barnard MR, Bavry AA, Bayer AS, Beaulieu LM, Berndt MC, Berny-Lang MA, Bhatt DL, Bizzaro N, Bledzka K, Bouchard BA, Brass LF, Bray PF, Briggs C, Bussel JB, Cattaneo M, Chakravorty S, Chong BH, Clemetson J, Clemetson KJ, Coller BS, Covic L, Davì G, del Zoppo GJ, Dowling MR, Dubois C, Eisert WG, Evangelista V, Flaumenhaft R, Freedman JE, Freedman J, Frelinger AL, Furie BC, Furie B, Gardiner C, Gawaz M, Geisler T, Greinacher A, Gurbel PA, Harrison P, Hartwig JH, Hayward CP, Hughes CE, Ikeda Y, Israels SJ, Italiano JE, Jackson S, Jain S, Jones CI, Josefsson EC, Kaplan C, Kile BT, Kimura Y, Klement GL, Kolandaivelu K, Kuliopulos A, Kuter DJ, Lambert MP, Langer HF, Lebois M, Levin J, Lordkipanidzé M, Ma YQ, Mannucci PM, McCrae KR, Merrill-Skoloff G, Michelson AD, Moffat KA, Mutch NJ, Newman DK, Newman PE, Ni H, Nieuwland R, Ouwehand WH, Parsons J, Patrono C, Perrotta PL, Pesho MM, Plow EF, Politt AY, Poncz M, Poon MC, Provost P, Psaila B, Rao AK, Rinder HM, Roberts IA, Rondina MT, Ruggeri ZM, Santilli F, Schwertz H, Shai E, Silveira JR, Smith BR, Smith MC, Smyth SS, Snyder EL, Sobel M, Soranzo N, Stalker TJ, Sturk A, Sudo T, Sullivan S, Tantry US, Tefferi A, Tracy PB, Tsai HM, van der Pol E, Varon D, Vazzana N, Vieira-de-Abreu A, Wannemacher K, Ware J, Warkentin TE, Watson SP, Weyrich AS, White JG, Wilcox DA, Yeaman MR, Zhang P, Zhu L, Zimmerman GA. List of Contributors. Platelets 2013. [DOI: 10.1016/b978-0-12-387837-3.00072-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
36
|
Abstract
Playing a central role in the maintenance of hemostasis as well as in thrombotic disorders, platelets contain a relatively diverse messenger RNA (mRNA) transcriptome as well as functional mRNA-regulatory microRNAs, suggesting that platelet mRNAs may be regulated by microRNAs. Here, we elucidated the complete repertoire and features of human platelet microRNAs by high-throughput sequencing. More than 492 different mature microRNAs were detected in human platelets, whereas the list of known human microRNAs was expanded further by the discovery of 40 novel microRNA sequences. As in nucleated cells, platelet microRNAs bear signs of post-transcriptional modifications, mainly terminal adenylation and uridylation. In vitro enzymatic assays demonstrated the ability of human platelets to uridylate microRNAs, which correlated with the presence of the uridyltransferase enzyme TUT4. We also detected numerous microRNA isoforms (isomiRs) resulting from imprecise Drosha and/or Dicer processing, in some cases more frequently than the reference microRNA sequence, including 5′ shifted isomiRs with redirected mRNA targeting abilities. This study unveils the existence of a relatively diverse and complex microRNA repertoire in human platelets, and represents a mandatory step towards elucidating the intraplatelet and extraplatelet role, function and importance of platelet microRNAs.
Collapse
Affiliation(s)
- Hélène Plé
- Centre hospitalier universitaire de Québec Research Center/Centre hospitalier de l'Université Laval, Quebec, Quebec, Canada, and Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
| | - Patricia Landry
- Centre hospitalier universitaire de Québec Research Center/Centre hospitalier de l'Université Laval, Quebec, Quebec, Canada, and Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
| | - Ashley Benham
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States of America
| | - Cristian Coarfa
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States of America
| | - Preethi H. Gunaratne
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States of America
- Department of Pathology, Baylor College of Medicine, Houston, Texas, United States of America
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas, United States of America
| | - Patrick Provost
- Centre hospitalier universitaire de Québec Research Center/Centre hospitalier de l'Université Laval, Quebec, Quebec, Canada, and Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
- * E-mail:
| |
Collapse
|
37
|
Abstract
The ribonuclease Dicer plays a central role in the microRNA pathway by catalyzing the formation of microRNAs, which are known to regulate messenger RNA (mRNA) translation. In order to improve our understanding of the molecular context in which Dicer functions and how it is regulated in human cells, we sought to expand its protein interaction network by employing a yeast two-hybrid screening strategy. This approach led to the identification and characterization of cytoskeleton-linking endoplasmic reticulum (ER) membrane protein of 63 kDa (CLIMP-63) as a novel Dicer-interacting protein. CLIMP-63 interacts with Dicer to form a high molecular weight complex, which is electrostatic in nature, is not mediated by RNA and is catalytically active in pre-microRNA processing. CLIMP-63 is required for stabilizing Dicer protein and for optimal regulation of a reporter gene coupled to the 3′ untranslated region of HMGA2 mRNA in human cells. Interacting with a portion of the luminal domain of CLIMP-63 and within minutes of its synthesis, our results suggest that Dicer transits through the ER, is glycosylated and can be secreted by cultured human cells with CLIMP-63. Our findings define CLIMP-63 as a novel protein interactor and regulator of Dicer function, involved in maintaining Dicer protein levels in human cells.
Collapse
Affiliation(s)
- Geneviève Pépin
- CHUQ Research Center/CHUL, 2705 Blvd Laurier, QC, G1V 4G2, Canada
| | | | | |
Collapse
|
38
|
Plé H, Maltais M, Corduan A, Rousseau G, Madore F, Provost P. Alteration of the platelet transcriptome in chronic kidney disease. Thromb Haemost 2012; 108:605-15. [PMID: 22836280 DOI: 10.1160/th12-03-0153] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 06/12/2012] [Indexed: 11/05/2022]
Abstract
Bleeding and thrombotic disorders are major complications affecting patients with chronic kidney disease (CKD). Exposure of circulating platelets to uraemic toxins and contact with artificial surfaces during dialysis induce platelet abnormalities and alter the platelet proteome. We hypothesised that these changes may be subsequent to changes in the composition and/or regulation of the platelet transcriptome. In this study, we investigated the circulating platelets of 10 CKD patients (i.e. five chronic haemodialysis patients and five stage 4 CKD uraemic patients) and five age- and sex-matched healthy subjects. We observed an alteration of the platelet messenger RNA (mRNA) and microRNA transcriptome in CKD patients. Impaired in uraemic platelets, the levels of some mRNAs and of most microRNAs appeared to be corrected by dialysis, which is consistent with a beneficial effect of dialysis and a mRNA regulatory role of platelet microRNAs. Reduced in platelets of uraemic patients, phosphatidylcholine transfer protein (PCTP) and WD repeat-containing protein 1 (WDR1) were found to be regulated by microRNAs, the latter of which involving hsa-miR-19b, a microRNA increased in platelets of uraemic patients and involved in platelet reactivity. These results suggest that an alteration of microRNA-based mRNA regulatory mechanisms may underlie the platelet response to uremia and entail the development of platelet-related complications in CKD.
Collapse
Affiliation(s)
- Hélène Plé
- CHUQ Research Center/CHUL, Quebec, Quebec, Canada
| | | | | | | | | | | |
Collapse
|
39
|
Plante I, Plé H, Landry P, Gunaratne PH, Provost P. Modulation of microRNA Activity by Semi-microRNAs. Front Genet 2012; 3:99. [PMID: 22675332 PMCID: PMC3366366 DOI: 10.3389/fgene.2012.00099] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 05/14/2012] [Indexed: 12/16/2022] Open
Abstract
The ribonuclease Dicer plays a central role in the microRNA pathway by catalyzing the formation of 19–24-nucleotide (nt) long microRNAs. Subsequently incorporated into Argonaute 2 (Ago2) effector complexes, microRNAs are known to regulate messenger RNA (mRNA) translation. Whether shorter RNA species derived from microRNAs exist and play a role in mRNA regulation remains unknown. Here, we report the serendipitous discovery of a 12-nt long RNA species corresponding to the 5′ region of the microRNA let-7, and tentatively termed semi-microRNA, or smiRNA. Using a smiRNA derived from the precursor of miR-223 as a model, we show that 12-nt long smiRNA species are devoid of any direct mRNA regulatory activity, as assessed in a reporter gene activity assay in transfected cultured human cells. However, smiR-223 was found to modulate the ability of the microRNA from which it derives to mediate translational repression or cleavage of reporter mRNAs. Our findings suggest that the 12-nt RNA species, generated along the microRNA pathway, may participate to the control of gene expression by regulating the activity of the related full-length mature microRNA in vivo.
Collapse
|
40
|
|
41
|
Selever J, Gu G, Lewis MT, Beyer A, Herynk MH, Covington KR, Tsimelzon A, Dontu G, Provost P, Di Pietro A, Boumendjel A, Albain K, Miele L, Weiss H, Barone I, Ando S, Fuqua SAW. Dicer-mediated upregulation of BCRP confers tamoxifen resistance in human breast cancer cells. Clin Cancer Res 2011; 17:6510-21. [PMID: 21878538 DOI: 10.1158/1078-0432.ccr-11-1403] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
PURPOSE Tamoxifen (Tam) is the most prescribed hormonal agent for treatment of estrogen receptor α (ERα)-positive breast cancer patients. Using microarray analysis, we observed that metastatic breast tumors resistant to Tam therapy had elevated levels of Dicer. EXPERIMENTAL DESIGN We overexpressed Dicer in ERα-positive MCF-7 human breast cancer cells and observed a concomitant increase in expression of the breast cancer resistance protein (BCRP). We thus hypothesized that Tam resistance associated with Dicer overexpression in ERα-positive breast cancer cells may involve BCRP. We analyzed BCRP function in Dicer-overexpressing cells using growth in soft agar and mammosphere formation and evaluated intracellular Tam efflux. RESULTS In the presence of Tam, Dicer-overexpressing cells formed resistant colonies in soft agar, and treatment with BCRP inhibitors restored Tam sensitivity. Tumor xenograft studies confirmed that Dicer-overexpressing cells were resistant to Tam in vivo. Tumors and distant metastases could be initiated with as few as five mammosphere cells from both vector and Dicer-overexpressing cells, indicating that the mammosphere assay selected for cells with enhanced tumor-initiating and metastatic capacity. Dicer-overexpressing cells with elevated levels of BCRP effluxed Tam more efficiently than control cells, and BCRP inhibitors were able to inhibit efflux. CONCLUSION Dicer-overexpressing breast cancer cells enriched for cells with enhanced BCRP function. We hypothesize that it is this population which may be involved in the emergence of Tam-resistant growth. BCRP may be a novel clinical target to restore Tam sensitivity.
Collapse
Affiliation(s)
- Jennifer Selever
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Kaneko H, Dridi S, Tarallo V, Gelfand BD, Fowler BJ, Cho WG, Kleinman ME, Ponicsan SL, Hauswirth WW, Chiodo VA, Karikó K, Yoo JW, Lee DK, Hadziahmetovic M, Song Y, Misra S, Chaudhuri G, Buaas FW, Braun RE, Hinton DR, Zhang Q, Grossniklaus HE, Provis JM, Madigan MC, Milam AH, Justice NL, Albuquerque RJC, Blandford AD, Bogdanovich S, Hirano Y, Witta J, Fuchs E, Littman DR, Ambati BK, Rudin CM, Chong MMW, Provost P, Kugel JF, Goodrich JA, Dunaief JL, Baffi JZ, Ambati J. DICER1 deficit induces Alu RNA toxicity in age-related macular degeneration. Nature 2011; 471:325-30. [PMID: 21297615 PMCID: PMC3077055 DOI: 10.1038/nature09830] [Citation(s) in RCA: 453] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 01/18/2011] [Indexed: 12/15/2022]
Abstract
Geographic atrophy (GA), an untreatable advanced form of age-related macular degeneration, results from retinal pigmented epithelium (RPE) cell degeneration. Here we show that the microRNA (miRNA)-processing enzyme DICER1 is reduced in the RPE of humans with GA, and that conditional ablation of Dicer1, but not seven other miRNA-processing enzymes, induces RPE degeneration in mice. DICER1 knockdown induces accumulation of Alu RNA in human RPE cells and Alu-like B1 and B2 RNAs in mouse RPE. Alu RNA is increased in the RPE of humans with GA, and this pathogenic RNA induces human RPE cytotoxicity and RPE degeneration in mice. Antisense oligonucleotides targeting Alu/B1/B2 RNAs prevent DICER1 depletion-induced RPE degeneration despite global miRNA downregulation. DICER1 degrades Alu RNA, and this digested Alu RNA cannot induce RPE degeneration in mice. These findings reveal a miRNA-independent cell survival function for DICER1 involving retrotransposon transcript degradation, show that Alu RNA can directly cause human pathology, and identify new targets for a major cause of blindness.
Collapse
Affiliation(s)
- Hiroki Kaneko
- Department of Ophthalmology & Visual Sciences, University of Kentucky, Lexington, Kentucky 40506, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Abstract
The microRNA (miRNA)-guided RNA silencing pathway is a central and well-defined cellular process involved in messenger RNA (mRNA) translational control. This complex regulatory process is achieved by a well orchestrated machinery composed of a relatively few protein components, among which the ribonuclease III (RNase III) Dicer and Argonaute 2 (Ago2) play a central role. These two proteins are essential and it is of particular interest to measure and detect their catalytic activity under various situations and/or conditions. In this chapter, we describe different protocols that aim to study and determine the catalytic activity of Dicer and Ago2 in cell extracts, immune complexes, and size-fractionated cell extracts. Another protocol aimed at assessing miRNA binding to Ago2 is also described. These experimental approaches are likely to be useful to researchers investigating the main steps of miRNA biogenesis and function in human health and diseases.
Collapse
Affiliation(s)
| | | | | | - Patrick Provost
- Corresponding author: Dr. Patrick Provost, Centre de Recherche en Rhumatologie et Immunologie, CHUL Research Center/CHUQ, 2705 Blvd Laurier, Local T1-49, Quebec, QC, G1V 4G2 Canada, Phone: 1 418 656 4141 (ext. 48842), Fax: 1 418 654 2765
| |
Collapse
|
44
|
Plante I, Provost P. Hypothesis: a role for fragile X mental retardation protein in mediating and relieving microRNA-guided translational repression? J Biomed Biotechnol 2010; 2006:16806. [PMID: 17057359 PMCID: PMC1559909 DOI: 10.1155/jbb/2006/16806] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
MicroRNA (miRNA)-guided messenger RNA (mRNA) translational
repression is believed to be mediated by effector miRNA-containing
ribonucleoprotein (miRNP) complexes harboring fragile X mental
retardation protein (FMRP). Recent studies documented the nucleic
acid chaperone properties of FMRP and characterized its role and
importance in RNA silencing in mammalian cells. We propose a model
in which FMRP could facilitate miRNA assembly on target mRNAs in a
process involving recognition of G quartet structures. Functioning
within a duplex miRNP, FMRP may also mediate mRNA targeting
through a strand exchange mechanism, in which the miRNA* of the
duplex is swapped for the mRNA. Furthermore, FMRP may contribute
to the relief of miRNA-guided mRNA repression through a reverse
strand exchange reaction, possibly initiated by a specific
cellular signal, that would liberate the mRNA for translation.
Suboptimal utilization of miRNAs may thus account for some of the
molecular defects in patients with the fragile X syndrome.
Collapse
Affiliation(s)
- Isabelle Plante
- Centre de Recherche en Rhumatologie et Immunologie,
Centre de Recherche du CHUL (CHUQ), 2705 Boulevard, Laurier, Sainte-Foy, Québec, Canada G1V 4G2
- Department of Anatomy and physiology, Faculty of
Medicine, Laval University, Québec, Canada G1K 7P4
| | - Patrick Provost
- Centre de Recherche en Rhumatologie et Immunologie,
Centre de Recherche du CHUL (CHUQ), 2705 Boulevard, Laurier, Sainte-Foy, Québec, Canada G1V 4G2
- Department of Anatomy and physiology, Faculty of
Medicine, Laval University, Québec, Canada G1K 7P4
- *Patrick Provost:
| |
Collapse
|
45
|
Plante I, Davidovic L, Ouellet DL, Gobeil LA, Tremblay S, Khandjian EW, Provost P. Dicer-derived microRNAs are utilized by the fragile X mental retardation protein for assembly on target RNAs. J Biomed Biotechnol 2010; 2006:64347. [PMID: 17057366 PMCID: PMC1698263 DOI: 10.1155/jbb/2006/64347] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
In mammalian cells, fragile X mental retardation protein (FMRP)
has been reported to be part of a microRNA (miRNA)-containing
effector ribonucleoprotien (RNP) complex believed to mediate
translational control of specific mRNAs. Here, using recombinant
proteins, we demonstrate that human FMRP can act as a miRNA
acceptor protein for the ribonuclease Dicer and facilitate the
assembly of miRNAs on specific target RNA sequences. The miRNA
assembler property of FMRP was abrogated upon deletion of its
single-stranded (ss) RNA binding K-homology domains. The
requirement of FMRP for efficient RNA interference (RNAi) in vivo
was unveiled by reporter gene silencing assays using various small
RNA inducers, which also supports its involvement in an ss small
interfering RNA (siRNA)-containing RNP (siRNP) effector complex in
mammalian cells. Our results define a possible role for FMRP in
RNA silencing and may provide further insight into the molecular
defects in patients with the fragile X syndrome.
Collapse
Affiliation(s)
- Isabelle Plante
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUL-CHUQ, 2705 Blvd. Laurier, Sainte-Foy, QC, Canada, G1V 4G2
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
| | - Laetitia Davidovic
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
- Unité de Recherche en Génétique Humaine et Moléculaire, Centre de Recherche Hôpital St-Francois d’Assise-CHUQ, QC, Canada, G1L 3L5
| | - Dominique L. Ouellet
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUL-CHUQ, 2705 Blvd. Laurier, Sainte-Foy, QC, Canada, G1V 4G2
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
| | - Lise-Andrée Gobeil
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUL-CHUQ, 2705 Blvd. Laurier, Sainte-Foy, QC, Canada, G1V 4G2
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
| | - Sandra Tremblay
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
- Unité de Recherche en Génétique Humaine et Moléculaire, Centre de Recherche Hôpital St-Francois d’Assise-CHUQ, QC, Canada, G1L 3L5
| | - Edouard W. Khandjian
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
- Unité de Recherche en Génétique Humaine et Moléculaire, Centre de Recherche Hôpital St-Francois d’Assise-CHUQ, QC, Canada, G1L 3L5
| | - Patrick Provost
- Centre de Recherche en Rhumatologie et Immunologie, Centre de Recherche du CHUL-CHUQ, 2705 Blvd. Laurier, Sainte-Foy, QC, Canada, G1V 4G2
- Department of Anatomy and Physiology, Faculty of Medicine, Laval University, Quebec, QC, Canada, G1K 7P4
- *Patrick Provost:
| |
Collapse
|
46
|
Abstract
Generated by
the ribonuclease III Dicer, microRNAs (miRNAs) are predicted to regulate up
to 90% of the genes in humans, suggesting that they may control every cellular
processes in all cells and tissues of the human body! Likely to play a
central role in health and disease, a dysfunctional miRNA-based regulation
of gene expression may represent the main etiologic factor underlying
age-related diseases affecting major organs, such as the brain. Here, we
discuss some of the limitations associated to the interpretation and
applicability of miRNA data, based on our recent study on the etiology of
Alzheimer's disease (AD). Using transiently transfected murine neuronal N2a
cells in culture, in parallel to a mouse model of AD, we were able to
demonstrate a role for two miRNAs (miR-298 and miR-328) in the regulation
of ß-amyloid (Aß) precursor protein (APP)-converting enzyme (BACE)
messenger RNA (mRNA) translation, thereby providing key insights into the
molecular basis underlying BACE deregulation in AD. However, whether miRNA
data can be extrapolated and transposed to the human context of age-related
diseases, such as AD, not only requires caution, but also warrants several
considerations.
Collapse
Affiliation(s)
- Patrick Provost
- CHUL Research Center/CHUQ and Faculty of Medicine, Université Laval, Quebec, QC, G1K 7P4, Canada.
| |
Collapse
|
47
|
Provost P. MicroRNAs as a molecular basis for mental retardation, Alzheimer's and prion diseases. Brain Res 2010; 1338:58-66. [PMID: 20347722 DOI: 10.1016/j.brainres.2010.03.069] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 03/15/2010] [Accepted: 03/18/2010] [Indexed: 11/28/2022]
Abstract
MicroRNAs (miRNAs) are small, approximately 21- to 23-nucleotide (nt) non-coding RNA species that act as key regulators of gene expression along a central and well-defined cellular process known as RNA silencing, and involving the recognition and translational control of specific messenger RNA (mRNAs). Generated through the well-orchestrated and sequential processing of miRNA precursor molecules, mature miRNAs are subsequently incorporated into miRNA-containing ribonucleoprotein effector complexes to regulate mRNA translation through the recognition of specific binding sites of imperfect complementarity located mainly in the 3' untranslated region. Predicted to regulate up to 90% of the genes in humans, miRNAs may thus control cellular processes in all cells and tissues of the human body. Likely to play a central role in health and disease, a dysfunctional miRNA-based regulation of gene expression may represent the main etiologic factor underlying diseases affecting major organs, such as the brain. In this review article, the molecular mechanisms underlying the role and function of miRNAs in the regulation of genes involved in neurological and neurodegenerative diseases will be discussed, with a focus on the fragile X syndrome, Alzheimer's disease (AD) and prion disease.
Collapse
Affiliation(s)
- Patrick Provost
- CHUL Research Center/CHUQ and Faculty of Medicine, Université Laval, Quebec, QC, Canada.
| |
Collapse
|
48
|
Provost P, Blocklet D, Renard M, Stoupel E, Thoma P, Vereecken P. Cardiac masses in a patient with AJCC stage II melanoma: cautious interpretation of the magnetic resonance imaging. Clin Exp Dermatol 2010; 34:e986-7. [PMID: 20055879 DOI: 10.1111/j.1365-2230.2009.03625.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
49
|
Abstract
Within the past few years, microRNAs (miRNAs) and other noncoding RNAs (ncRNAs) have emerged as elements with critically high importance in posttranscriptional control of cellular and, more recently, viral processes. Endogenously produced by a component of the miRNA-guided RNA silencing machinery known as Dicer, miRNAs are known to control messenger RNA (mRNA) translation through recognition of specific binding sites usually located in their 3' untranslated region. Recent evidences indicate that the host miRNA pathway may represent an adapted antiviral defense mechanism that can act either by direct miRNA-mediated modulation of viral gene expression or through recognition and inactivation of structured viral RNA species by the protein components of the RNA silencing machinery such as Dicer. This latter process, however, is a double-edge sword, as it may yield viral miRNAs exerting gene regulatory properties on both host and viral mRNAs. Our knowledge of the interaction between viruses and host RNA silencing machineries, and how this influences the course of infection, is becoming increasingly complex. This chapter aims to summarize our current knowledge about viral miRNAs/ncRNAs and their targets, as well as cellular miRNAs that are modulated by viruses upon infection.
Collapse
Affiliation(s)
- Dominique L Ouellet
- Centre de Recherche en Rhumatologie et Immunologie, CHUL Research Center/CHUQ, Quebec, QC, Canada
| | | |
Collapse
|
50
|
Ouellet DL, Plante I, Boissonneault V, Ayari C, Provost P. Refractoriness of hepatitis C virus internal ribosome entry site to processing by Dicer in vivo. J Negat Results Biomed 2009; 8:8. [PMID: 19678941 PMCID: PMC2746800 DOI: 10.1186/1477-5751-8-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Accepted: 08/13/2009] [Indexed: 12/16/2022] Open
Abstract
Background Hepatitis C virus (HCV) is a positive-strand RNA virus harboring a highly structured internal ribosome entry site (IRES) in the 5' nontranslated region of its genome. Important for initiating translation of viral RNAs into proteins, the HCV IRES is composed of RNA structures reminiscent of microRNA precursors that may be targeted by the host RNA silencing machinery. Results We report that HCV IRES can be recognized and processed into small RNAs by the human ribonuclease Dicer in vitro. Furthermore, we identify domains II, III and VI of HCV IRES as potential substrates for Dicer in vitro. However, maintenance of the functional integrity of the HCV IRES in response to Dicer overexpression suggests that the structure of the HCV IRES abrogates its processing by Dicer in vivo. Conclusion Our results suggest that the HCV IRES may have evolved to adopt a structure or a cellular context that is refractory to Dicer processing, which may contribute to viral escape of the host RNA silencing machinery.
Collapse
Affiliation(s)
- Dominique L Ouellet
- Centre de Recherche en Rhumatologie et Immunologie, CHUL Research Center/CHUQ, 2705 Blvd Laurier, Quebec, QC, G1V 4G2, Canada.
| | | | | | | | | |
Collapse
|