1
|
Liang LY, Geoghegan ND, Mlodzianoski M, Leis A, Whitehead LW, Surudoi MG, Young SN, Janes P, Shepherd D, Ghosal D, Rogers KL, Murphy JM, Lucet IS. Co-clustering of EphB6 and ephrinB1 in trans restrains cancer cell invasion. Commun Biol 2024; 7:461. [PMID: 38627519 PMCID: PMC11021433 DOI: 10.1038/s42003-024-06118-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Received: 02/20/2024] [Accepted: 03/27/2024] [Indexed: 04/19/2024] Open
Abstract
EphB6 is an understudied ephrin receptor tyrosine pseudokinase that is downregulated in multiple types of metastatic cancers. Unlike its kinase-active counterparts which autophosphorylate and transmit signals upon intercellular interaction, little is known about how EphB6 functions in the absence of intrinsic kinase activity. Here, we unveil a molecular mechanism of cell-cell interaction driven by EphB6. We identify ephrinB1 as a cognate ligand of EphB6 and show that in trans interaction of EphB6 with ephrinB1 on neighboring cells leads to the formation of large co-clusters at the plasma membrane. These co-clusters exhibit a decreased propensity towards endocytosis, suggesting a unique characteristic for this type of cell-cell interaction. Using lattice light-sheet microscopy, 3D structured illumination microscopy and cryo-electron tomography techniques, we show that co-clustering of EphB6 and ephrinB1 promotes the formation of double-membrane tubular structures between cells. Importantly, we also demonstrate that these intercellular structures stabilize cell-cell adhesion, leading to a reduction in the invasive behavior of cancer cells. Our findings rationalize a role for EphB6 pseudokinase as a tumor suppressor when interacting with its ligands in trans.
Collapse
Affiliation(s)
- Lung-Yu Liang
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Niall D Geoghegan
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Michael Mlodzianoski
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Andrew Leis
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Lachlan W Whitehead
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Minglyanna G Surudoi
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Samuel N Young
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - Peter Janes
- Olivia Newton-John Cancer Research Institute and La Trobe School of Cancer Medicine, Level 5, ONJ Centre, 145 Studley Rd, Heidelberg, VIC, 3084, Australia
| | - Doulin Shepherd
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Debnath Ghosal
- Department of Biochemistry and Pharmacology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
- ARC Centre for Cryo-electron Microscopy of Membrane Proteins, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia
| | - James M Murphy
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia.
| | - Isabelle S Lucet
- Walter and Eliza Hall Institute for Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- Department of Medical Biology, University of Melbourne, 1G Royal Parade, Parkville, VIC, 3052, Australia.
- ARC Centre for Cryo-electron Microscopy of Membrane Proteins, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, VIC, 3052, Australia.
| |
Collapse
|
2
|
Bergamasco MI, Vanyai HK, Garnham AL, Geoghegan ND, Vogel AP, Eccles S, Rogers KL, Smyth GK, Blewitt ME, Hannan AJ, Thomas T, Voss AK. Increasing histone acetylation improves sociability and restores learning and memory in KAT6B-haploinsufficient mice. J Clin Invest 2024; 134:e167672. [PMID: 38557491 PMCID: PMC10977983 DOI: 10.1172/jci167672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/26/2024] [Indexed: 04/04/2024] Open
Abstract
Mutations in genes encoding chromatin modifiers are enriched among mutations causing intellectual disability. The continuing development of the brain postnatally, coupled with the inherent reversibility of chromatin modifications, may afford an opportunity for therapeutic intervention following a genetic diagnosis. Development of treatments requires an understanding of protein function and models of the disease. Here, we provide a mouse model of Say-Barber-Biesecker-Young-Simpson syndrome (SBBYSS) (OMIM 603736) and demonstrate proof-of-principle efficacy of postnatal treatment. SBBYSS results from heterozygous mutations in the KAT6B (MYST4/MORF/QFK) gene and is characterized by intellectual disability and autism-like behaviors. Using human cells carrying SBBYSS-specific KAT6B mutations and Kat6b heterozygous mice (Kat6b+/-), we showed that KAT6B deficiency caused a reduction in histone H3 lysine 9 acetylation. Kat6b+/- mice displayed learning, memory, and social deficits, mirroring SBBYSS individuals. Treatment with a histone deacetylase inhibitor, valproic acid, or an acetyl donor, acetyl-carnitine (ALCAR), elevated histone acetylation levels in the human cells with SBBYSS mutations and in brain and blood cells of Kat6b+/- mice and partially reversed gene expression changes in Kat6b+/- cortical neurons. Both compounds improved sociability in Kat6b+/- mice, and ALCAR treatment restored learning and memory. These data suggest that a subset of SBBYSS individuals may benefit from postnatal therapeutic interventions.
Collapse
Affiliation(s)
- Maria I. Bergamasco
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Hannah K. Vanyai
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Alexandra L. Garnham
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Niall D. Geoghegan
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Adam P. Vogel
- Centre for Neurosciences of Speech, University of Melbourne, Parkville, Victoria, Australia
- Redenlab Inc., Melbourne, Australia
| | - Samantha Eccles
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Kelly L. Rogers
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Gordon K. Smyth
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- School of Mathematics and Statistics, University of Melbourne, Parkville, Victoria, Australia
| | - Marnie E. Blewitt
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Anthony J. Hannan
- Florey Institute of Neuroscience and Mental Health, Melbourne, Victoria, Australia
- Department of Anatomy and Physiology, University of Melbourne, Parkville, Victoria, Australia
| | - Tim Thomas
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| | - Anne K. Voss
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, Australia
- Department of Medical Biology and
| |
Collapse
|
3
|
Frank D, Bergamasco M, Mlodzianoski MJ, Kueh A, Tsui E, Hall C, Kastrappis G, Voss AK, McLean C, Faux M, Rogers KL, Tran B, Vincan E, Komander D, Dewson G, Tran H. Trabid patient mutations impede the axonal trafficking of adenomatous polyposis coli to disrupt neurite growth. eLife 2023; 12:RP90796. [PMID: 38099646 PMCID: PMC10723793 DOI: 10.7554/elife.90796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/17/2023] Open
Abstract
ZRANB1 (human Trabid) missense mutations have been identified in children diagnosed with a range of congenital disorders including reduced brain size, but how Trabid regulates neurodevelopment is not understood. We have characterized these patient mutations in cells and mice to identify a key role for Trabid in the regulation of neurite growth. One of the patient mutations flanked the catalytic cysteine of Trabid and its deubiquitylating (DUB) activity was abrogated. The second variant retained DUB activity, but failed to bind STRIPAK, a large multiprotein assembly implicated in cytoskeleton organization and neural development. Zranb1 knock-in mice harboring either of these patient mutations exhibited reduced neuronal and glial cell densities in the brain and a motor deficit consistent with fewer dopaminergic neurons and projections. Mechanistically, both DUB-impaired and STRIPAK-binding-deficient Trabid variants impeded the trafficking of adenomatous polyposis coli (APC) to microtubule plus-ends. Consequently, the formation of neuronal growth cones and the trajectory of neurite outgrowth from mutant midbrain progenitors were severely compromised. We propose that STRIPAK recruits Trabid to deubiquitylate APC, and that in cells with mutant Trabid, APC becomes hyperubiquitylated and mislocalized causing impaired organization of the cytoskeleton that underlie the neuronal and developmental phenotypes.
Collapse
Affiliation(s)
- Daniel Frank
- Ubiquitin Signalling Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
| | - Maria Bergamasco
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Epigenetics and Development Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Michael J Mlodzianoski
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Andrew Kueh
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Melbourne Advanced Genome Editing Centre, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Australia
- School of Cancer Medicine, La Trobe University, Heidelberg, Australia
| | - Ellen Tsui
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Histology Facility, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Cathrine Hall
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Georgios Kastrappis
- Department of Infectious Diseases, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Anne Kathrin Voss
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Epigenetics and Development Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Catriona McLean
- Department of Anatomical Pathology, The Alfred Hospital, Melbourne, Australia
| | - Maree Faux
- Neuro-Oncology Group, Murdoch Children's Research Institute, Parkville, Australia
| | - Kelly L Rogers
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
| | - Bang Tran
- Department of Infectious Diseases, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Elizabeth Vincan
- Department of Infectious Diseases, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
- The Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - David Komander
- Ubiquitin Signalling Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
| | - Grant Dewson
- Ubiquitin Signalling Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
| | - Hoanh Tran
- Ubiquitin Signalling Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, Australia
- Department of Infectious Diseases, The University of Melbourne at The Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| |
Collapse
|
4
|
Bader SM, Cooney JP, Sheerin D, Taiaroa G, Harty L, Davidson KC, Mackiewicz L, Dayton M, Wilcox S, Whitehead L, Rogers KL, Georgy SR, Coussens AK, Grimley SL, Corbin V, Pitt M, Coin L, Pickering R, Thomas M, Allison CC, McAuley J, Purcell DFJ, Doerflinger M, Pellegrini M. SARS-CoV-2 mouse adaptation selects virulence mutations that cause TNF-driven age-dependent severe disease with human correlates. Proc Natl Acad Sci U S A 2023; 120:e2301689120. [PMID: 37523564 PMCID: PMC10410703 DOI: 10.1073/pnas.2301689120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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] [Received: 01/31/2023] [Accepted: 06/13/2023] [Indexed: 08/02/2023] Open
Abstract
The diversity of COVID-19 disease in otherwise healthy people, from seemingly asymptomatic infection to severe life-threatening disease, is not clearly understood. We passaged a naturally occurring near-ancestral SARS-CoV-2 variant, capable of infecting wild-type mice, and identified viral genomic mutations coinciding with the acquisition of severe disease in young adult mice and lethality in aged animals. Transcriptomic analysis of lung tissues from mice with severe disease elucidated a host antiviral response dominated mainly by interferon and IL-6 pathway activation in young mice, while in aged animals, a fatal outcome was dominated by TNF and TGF-β signaling. Congruent with our pathway analysis, we showed that young TNF-deficient mice had mild disease compared to controls and aged TNF-deficient animals were more likely to survive infection. Emerging clinical correlates of disease are consistent with our preclinical studies, and our model may provide value in defining aberrant host responses that are causative of severe COVID-19.
Collapse
Affiliation(s)
- Stefanie M. Bader
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - James P. Cooney
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Dylan Sheerin
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - George Taiaroa
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Leigh Harty
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Kathryn C. Davidson
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Liana Mackiewicz
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
| | - Merle Dayton
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
| | - Stephen Wilcox
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Lachlan Whitehead
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Kelly L. Rogers
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Smitha Rose Georgy
- Anatomic Pathology, Melbourne Veterinary School, Faculty of Science, University of Melbourne, Melbourne, VIC3030, Australia
| | - Anna K. Coussens
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Samantha L. Grimley
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Vincent Corbin
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Miranda Pitt
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Lachlan Coin
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Raelene Pickering
- Department of Diabetes, Monash University, Central Clinical School, Level 5, Alfred Centre, Melbourne, VIC3004, Australia
| | - Merlin Thomas
- Department of Diabetes, Monash University, Central Clinical School, Level 5, Alfred Centre, Melbourne, VIC3004, Australia
| | - Cody C. Allison
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
| | - Julie McAuley
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Damian F. J. Purcell
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC3000, Australia
| | - Marcel Doerflinger
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| | - Marc Pellegrini
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC3052, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, VIC3052, Australia
| |
Collapse
|
5
|
Dans MG, Piirainen H, Nguyen W, Khurana S, Mehra S, Razook Z, Geoghegan ND, Dawson AT, Das S, Parkyn Schneider M, Jonsdottir TK, Gabriela M, Gancheva MR, Tonkin CJ, Mollard V, Goodman CD, McFadden GI, Wilson DW, Rogers KL, Barry AE, Crabb BS, de Koning-Ward TF, Sleebs BE, Kursula I, Gilson PR. Sulfonylpiperazine compounds prevent Plasmodium falciparum invasion of red blood cells through interference with actin-1/profilin dynamics. PLoS Biol 2023; 21:e3002066. [PMID: 37053271 PMCID: PMC10128974 DOI: 10.1371/journal.pbio.3002066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 04/25/2023] [Accepted: 03/06/2023] [Indexed: 04/15/2023] Open
Abstract
With emerging resistance to frontline treatments, it is vital that new antimalarial drugs are identified to target Plasmodium falciparum. We have recently described a compound, MMV020291, as a specific inhibitor of red blood cell (RBC) invasion, and have generated analogues with improved potency. Here, we generated resistance to MMV020291 and performed whole genome sequencing of 3 MMV020291-resistant populations. This revealed 3 nonsynonymous single nucleotide polymorphisms in 2 genes; 2 in profilin (N154Y, K124N) and a third one in actin-1 (M356L). Using CRISPR-Cas9, we engineered these mutations into wild-type parasites, which rendered them resistant to MMV020291. We demonstrate that MMV020291 reduces actin polymerisation that is required by the merozoite stage parasites to invade RBCs. Additionally, the series inhibits the actin-1-dependent process of apicoplast segregation, leading to a delayed death phenotype. In vitro cosedimentation experiments using recombinant P. falciparum proteins indicate that potent MMV020291 analogues disrupt the formation of filamentous actin in the presence of profilin. Altogether, this study identifies the first compound series interfering with the actin-1/profilin interaction in P. falciparum and paves the way for future antimalarial development against the highly dynamic process of actin polymerisation.
Collapse
Affiliation(s)
- Madeline G Dans
- Burnet Institute, Melbourne, Victoria, Australia
- School of Medicine and Institute for Mental and Physical Health and Clinical Translation, Deakin University, Waurn Ponds, Victoria, Australia
- Walter and Eliza Hall Institute, Parkville, Victoria, Australia
| | - Henni Piirainen
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - William Nguyen
- Walter and Eliza Hall Institute, Parkville, Victoria, Australia
| | - Sachin Khurana
- Walter and Eliza Hall Institute, Parkville, Victoria, Australia
| | - Somya Mehra
- Burnet Institute, Melbourne, Victoria, Australia
| | - Zahra Razook
- Burnet Institute, Melbourne, Victoria, Australia
- School of Medicine and Institute for Mental and Physical Health and Clinical Translation, Deakin University, Waurn Ponds, Victoria, Australia
| | | | | | - Sujaan Das
- Ludwig Maximilian University, Faculty of Veterinary Medicine, Munich, Germany
| | | | - Thorey K Jonsdottir
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria, Australia
| | - Mikha Gabriela
- Burnet Institute, Melbourne, Victoria, Australia
- School of Medicine and Institute for Mental and Physical Health and Clinical Translation, Deakin University, Waurn Ponds, Victoria, Australia
| | - Maria R Gancheva
- Research Centre for Infectious Diseases, The University of Adelaide, Adelaide, Australia
| | | | - Vanessa Mollard
- School of Biosciences, The University of Melbourne, Parkville, Victoria, Australia
| | | | - Geoffrey I McFadden
- School of Biosciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Danny W Wilson
- Research Centre for Infectious Diseases, The University of Adelaide, Adelaide, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute, Parkville, Victoria, Australia
| | - Alyssa E Barry
- Burnet Institute, Melbourne, Victoria, Australia
- School of Medicine and Institute for Mental and Physical Health and Clinical Translation, Deakin University, Waurn Ponds, Victoria, Australia
| | - Brendan S Crabb
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria, Australia
| | - Tania F de Koning-Ward
- School of Medicine and Institute for Mental and Physical Health and Clinical Translation, Deakin University, Waurn Ponds, Victoria, Australia
| | - Brad E Sleebs
- Walter and Eliza Hall Institute, Parkville, Victoria, Australia
| | - Inari Kursula
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Paul R Gilson
- Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria, Australia
| |
Collapse
|
6
|
Kong IY, Trezise S, Light A, Todorovski I, Arnau GM, Gadipally S, Yoannidis D, Simpson KJ, Dong X, Whitehead L, Tempany JC, Farchione AJ, Sheikh AA, Groom JR, Rogers KL, Herold MJ, Bryant VL, Ritchie ME, Willis SN, Johnstone RW, Hodgkin PD, Nutt SL, Vervoort SJ, Hawkins ED. Epigenetic modulators of B cell fate identified through coupled phenotype-transcriptome analysis. Cell Death Differ 2022; 29:2519-2530. [PMID: 35831623 PMCID: PMC9751284 DOI: 10.1038/s41418-022-01037-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 06/16/2022] [Accepted: 06/21/2022] [Indexed: 01/31/2023] Open
Abstract
High-throughput methodologies are the cornerstone of screening approaches to identify novel compounds that regulate immune cell function. To identify novel targeted therapeutics to treat immune disorders and haematological malignancies, there is a need to integrate functional cellular information with the molecular mechanisms that regulate changes in immune cell phenotype. We facilitate this goal by combining quantitative methods for dissecting complex simultaneous cell phenotypic effects with genomic analysis. This combination strategy we term Multiplexed Analysis of Cells sequencing (MAC-seq), a modified version of Digital RNA with perturbation of Genes (DRUGseq). We applied MAC-seq to screen compounds that target the epigenetic machinery of B cells and assess altered humoral immunity by measuring changes in proliferation, survival, differentiation and transcription. This approach revealed that polycomb repressive complex 2 (PRC2) inhibitors promote antibody secreting cell (ASC) differentiation in both murine and human B cells in vitro. This is further validated using T cell-dependent immunization in mice. Functional dissection of downstream effectors of PRC2 using arrayed CRISPR screening uncovered novel regulators of B cell differentiation, including Mybl1, Myof, Gas7 and Atoh8. Together, our findings demonstrate that integrated phenotype-transcriptome analyses can be effectively combined with drug screening approaches to uncover the molecular circuitry that drives lymphocyte fate decisions.
Collapse
Affiliation(s)
- Isabella Y. Kong
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Stephanie Trezise
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Amanda Light
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Izabela Todorovski
- grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC Australia
| | - Gisela Mir Arnau
- grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia
| | - Sreeja Gadipally
- grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia
| | - David Yoannidis
- grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia
| | - Kaylene J. Simpson
- grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC Australia ,grid.1055.10000000403978434Victorian Centre for Functional Genomics, Peter MacCallum Cancer Centre, Melbourne, VIC Australia
| | - Xueyi Dong
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Lachlan Whitehead
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Jessica C. Tempany
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Anthony J. Farchione
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Amania A. Sheikh
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia
| | - Joanna R. Groom
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Kelly L. Rogers
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Marco J. Herold
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Vanessa L. Bryant
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Matthew E. Ritchie
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Simon N. Willis
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Ricky W. Johnstone
- grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC Australia
| | - Philip D. Hodgkin
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Stephen L. Nutt
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| | - Stephin J. Vervoort
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia ,grid.1055.10000000403978434Peter MacCallum Cancer Centre, Melbourne, 3000 VIC Australia ,grid.1008.90000 0001 2179 088XSir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC Australia
| | - Edwin D. Hawkins
- grid.1042.70000 0004 0432 4889Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052 VIC Australia ,grid.1008.90000 0001 2179 088XDepartment of Medical Biology, The University of Melbourne, Parkville, 3010 VIC Australia
| |
Collapse
|
7
|
Steiner A, Hrovat-Schaale K, Prigione I, Yu CH, Laohamonthonkul P, Harapas CR, Low RRJ, De Nardo D, Dagley LF, Mlodzianoski MJ, Rogers KL, Zillinger T, Hartmann G, Gantier MP, Gattorno M, Geyer M, Volpi S, Davidson S, Masters SL. Deficiency in coatomer complex I causes aberrant activation of STING signalling. Nat Commun 2022; 13:2321. [PMID: 35484149 PMCID: PMC9051092 DOI: 10.1038/s41467-022-29946-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [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: 07/17/2020] [Accepted: 04/05/2022] [Indexed: 12/15/2022] Open
Abstract
Coatomer complex I (COPI) mediates retrograde vesicular trafficking from Golgi to the endoplasmic reticulum (ER) and within Golgi compartments. Deficiency in subunit alpha causes COPA syndrome and is associated with type I IFN signalling, although the upstream innate immune sensor involved was unknown. Using in vitro models we find aberrant activation of the STING pathway due to deficient retrograde but probably not intra-Golgi transport. Further we find the upstream cytosolic DNA sensor cGAS as essentially required to drive type I IFN signalling. Genetic deletion of COPI subunits COPG1 or COPD similarly induces type I IFN activation in vitro, which suggests that inflammatory diseases associated with mutations in other COPI subunit genes may exist. Finally, we demonstrate that inflammation in COPA syndrome patient peripheral blood mononuclear cells and COPI-deficient cell lines is ameliorated by treatment with the small molecule STING inhibitor H-151, suggesting targeted inhibition of the cGAS/STING pathway as a promising therapeutic approach. Mutations in the coatomer complex I can result in endoplasmic reticulum stress and inflammatory consequences. Here authors define aberrant activation of the STING immunosensing pathway in a disturbed coatmer complex context and the therapeutic modulation of this axis to counter the associated immunopathology.
Collapse
Affiliation(s)
- Annemarie Steiner
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Institute of Structural Biology, University Hospital Bonn, 53127, Bonn, Germany
| | - Katja Hrovat-Schaale
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Ignazia Prigione
- Centre for Autoinflammatory Diseases and Primary Immunodeficiencies, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Chien-Hsiung Yu
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Pawat Laohamonthonkul
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Cassandra R Harapas
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Ronnie Ren Jie Low
- Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Personalised Oncology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Dominic De Nardo
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3168, Australia
| | - Laura F Dagley
- Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.,Advanced Technology and Biology, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Michael J Mlodzianoski
- Center for Dynamic Imaging, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Kelly L Rogers
- Center for Dynamic Imaging, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Thomas Zillinger
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127, Bonn, Germany.,Institute of Immunology, Philipps-University Marburg, BMFZ, 35043, Marburg, Germany
| | - Gunther Hartmann
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127, Bonn, Germany.,German Centre for Infection Research (DZIF), partner site Bonn-Cologne, 53127, Bonn, Germany
| | - Michael P Gantier
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, 3168, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Marco Gattorno
- Centre for Autoinflammatory Diseases and Primary Immunodeficiencies, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Matthias Geyer
- Institute of Structural Biology, University Hospital Bonn, 53127, Bonn, Germany
| | - Stefano Volpi
- Centre for Autoinflammatory Diseases and Primary Immunodeficiencies, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy.,University of Genoa, 16126, Genoa, Italy
| | - Sophia Davidson
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Seth L Masters
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.
| |
Collapse
|
8
|
Gan ZY, Callegari S, Cobbold SA, Cotton TR, Mlodzianoski MJ, Schubert AF, Geoghegan ND, Rogers KL, Leis A, Dewson G, Glukhova A, Komander D. Publisher Correction: Activation mechanism of PINK1. Nature 2022; 603:E33. [PMID: 35293391 PMCID: PMC9119239 DOI: 10.1038/s41586-022-04591-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhong Yan Gan
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Sylvie Callegari
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Simon A Cobbold
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Thomas R Cotton
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Michael J Mlodzianoski
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | | | - Niall D Geoghegan
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Andrew Leis
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Grant Dewson
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Alisa Glukhova
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia.,Drug Discovery Biology, Monash Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.,Department of Biochemistry and Pharmacology, University of Melbourne, Melbourne, Victoria, Australia
| | - David Komander
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia. .,Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia.
| |
Collapse
|
9
|
Davidson S, Yu CH, Steiner A, Ebstein F, Baker PJ, Jarur-Chamy V, Hrovat Schaale K, Laohamonthonkul P, Kong K, Calleja DJ, Harapas CR, Balka KR, Mitchell J, Jackson JT, Geoghegan ND, Moghaddas F, Rogers KL, Mayer-Barber KD, De Jesus AA, De Nardo D, Kile BT, Sadler AJ, Poli MC, Krüger E, Goldbach Mansky R, Masters SL. Protein kinase R is an innate immune sensor of proteotoxic stress via accumulation of cytoplasmic IL-24. Sci Immunol 2022; 7:eabi6763. [PMID: 35148201 PMCID: PMC11036408 DOI: 10.1126/sciimmunol.abi6763] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Proteasome dysfunction can lead to autoinflammatory disease associated with elevated type I interferon (IFN-αβ) and NF-κB signaling; however, the innate immune pathway driving this is currently unknown. Here, we identified protein kinase R (PKR) as an innate immune sensor for proteotoxic stress. PKR activation was observed in cellular models of decreased proteasome function and in multiple cell types from patients with proteasome-associated autoinflammatory disease (PRAAS). Furthermore, genetic deletion or small-molecule inhibition of PKR in vitro ameliorated inflammation driven by proteasome deficiency. In vivo, proteasome inhibitor-induced inflammatory gene transcription was blunted in PKR-deficient mice compared with littermate controls. PKR also acted as a rheostat for proteotoxic stress by triggering phosphorylation of eIF2α, which can prevent the translation of new proteins to restore homeostasis. Although traditionally known as a sensor of RNA, under conditions of proteasome dysfunction, PKR sensed the cytoplasmic accumulation of a known interactor, interleukin-24 (IL-24). When misfolded IL-24 egress into the cytosol was blocked by inhibition of the endoplasmic reticulum-associated degradation pathway, PKR activation and subsequent inflammatory signaling were blunted. Cytokines such as IL-24 are normally secreted from cells; therefore, cytoplasmic accumulation of IL-24 represents an internal danger-associated molecular pattern. Thus, we have identified a mechanism by which proteotoxic stress is detected, causing inflammation observed in the disease PRAAS.
Collapse
Affiliation(s)
- Sophia Davidson
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Chien-Hsiung Yu
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Annemarie Steiner
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
- Institute of Structural Biology, University Hospital Bonn, Bonn 53127, Germany
| | - Frédéric Ebstein
- University Medicine Greifswald, Institute of Medical Biochemistry and Molecular Biology, Greifswald 17475, Germany
| | - Paul J. Baker
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, MD 20892, USA
| | - Valentina Jarur-Chamy
- Immunogenetics and Translational Immunology Program. Facultad de Medicina, Universidad del Desarrollo Clínica Alemana, Santiago, Chile
| | - Katja Hrovat Schaale
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Pawat Laohamonthonkul
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Klara Kong
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Dale J. Calleja
- Ubiquitin Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Cassandra R. Harapas
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Katherine R. Balka
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Jacob Mitchell
- Translational Autoinflammatory Disease Studies (TADS), Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, MD 20892, USA
| | - Jacob T. Jackson
- Immunology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Niall D. Geoghegan
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Fiona Moghaddas
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Kelly L. Rogers
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - Katrin D. Mayer-Barber
- Inflammation and Innate Immunity Unit, Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, MD 20892, USA
| | - Adriana A. De Jesus
- Translational Autoinflammatory Disease Studies (TADS), Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, MD 20892, USA
| | - Dominic De Nardo
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Benjamin T. Kile
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Anthony J. Sadler
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia
- Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria, Australia
| | - M. Cecilia Poli
- Immunogenetics and Translational Immunology Program. Facultad de Medicina, Universidad del Desarrollo Clínica Alemana, Santiago, Chile
- Division of Pediatric Immunology, Allergy, and Rheumatology, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Elke Krüger
- University Medicine Greifswald, Institute of Medical Biochemistry and Molecular Biology, Greifswald 17475, Germany
| | - Raphaela Goldbach Mansky
- Translational Autoinflammatory Disease Studies (TADS), Laboratory of Clinical Immunology and Microbiology, NIAID, NIH, Bethesda, MD 20892, USA
| | - Seth L. Masters
- Inflammation Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| |
Collapse
|
10
|
Seizova S, Ruparel U, Garnham AL, Bader SM, Uboldi AD, Coffey MJ, Whitehead LW, Rogers KL, Tonkin CJ. Transcriptional modification of host cells harboring Toxoplasma gondii bradyzoites prevents IFN gamma-mediated cell death. Cell Host Microbe 2021; 30:232-247.e6. [PMID: 34921775 DOI: 10.1016/j.chom.2021.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 07/16/2021] [Revised: 10/05/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022]
Abstract
Toxoplasma gondii develops a latent infection in the muscle and central nervous system that acts as a reservoir for acute-stage reactivation in vulnerable patients. Little is understood about how parasites manipulate host cells during latent infection and the impact this has on survival. We show that bradyzoites impart a unique transcriptional signature on infected host cells. Many of these transcriptional changes rely on protein export and result in the suppression of type I interferon (IFN) and IFNγ signaling more so than in acute stages. Loss of the protein export component, MYR1, abrogates transcriptional remodeling and prevents suppression of IFN signaling. Among the exported proteins, the inhibitor of STAT1 transcription (IST) plays a key role in limiting IFNγ signaling in bradyzoites. Furthermore, bradyzoite protein export protects host cells from IFNγ-mediated cell death, even when export is restricted to latent stages. These findings highlight the functional importance of host manipulation in Toxoplasma's bradyzoite stages.
Collapse
Affiliation(s)
- Simona Seizova
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia; Wellcome Center for Anti-Infectives Research, Division of Biological Chemistry and Drug Discovery, University of Dundee, Dundee DD1 5EH, UK
| | - Ushma Ruparel
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Alexandra L Garnham
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Stefanie M Bader
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Alessandro D Uboldi
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Michael J Coffey
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia; Poseida Therapeutics, San Diego, CA, USA
| | - Lachlan W Whitehead
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia
| | - Christopher J Tonkin
- Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia; Department of Medical Biology, The University of Melbourne, Melbourne, VIC, Australia.
| |
Collapse
|
11
|
Lewis SM, Asselin-Labat ML, Nguyen Q, Berthelet J, Tan X, Wimmer VC, Merino D, Rogers KL, Naik SH. Spatial omics and multiplexed imaging to explore cancer biology. Nat Methods 2021; 18:997-1012. [PMID: 34341583 DOI: 10.1038/s41592-021-01203-6] [Citation(s) in RCA: 204] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/04/2021] [Indexed: 01/19/2023]
Abstract
Understanding intratumoral heterogeneity-the molecular variation among cells within a tumor-promises to address outstanding questions in cancer biology and improve the diagnosis and treatment of specific cancer subtypes. Single-cell analyses, especially RNA sequencing and other genomics modalities, have been transformative in revealing novel biomarkers and molecular regulators associated with tumor growth, metastasis and drug resistance. However, these approaches fail to provide a complete picture of tumor biology, as information on cellular location within the tumor microenvironment is lost. New technologies leveraging multiplexed fluorescence, DNA, RNA and isotope labeling enable the detection of tens to thousands of cancer subclones or molecular biomarkers within their native spatial context. The expeditious growth in these techniques, along with methods for multiomics data integration, promises to yield a more comprehensive understanding of cell-to-cell variation within and between individual tumors. Here we provide the current state and future perspectives on the spatial technologies expected to drive the next generation of research and diagnostic and therapeutic strategies for cancer.
Collapse
Affiliation(s)
- Sabrina M Lewis
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Marie-Liesse Asselin-Labat
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.,Personalised Oncology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Quan Nguyen
- Division of Genetics and Genomics, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Jean Berthelet
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Xiao Tan
- Division of Genetics and Genomics, Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
| | - Verena C Wimmer
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia
| | - Delphine Merino
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.,Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Kelly L Rogers
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia. .,Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.
| | - Shalin H Naik
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia. .,Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, Australia.
| |
Collapse
|
12
|
Berthelet J, Wimmer VC, Whitfield HJ, Serrano A, Boudier T, Mangiola S, Merdas M, El-Saafin F, Baloyan D, Wilcox J, Wilcox S, Parslow AC, Papenfuss AT, Yeo B, Ernst M, Pal B, Anderson RL, Davis MJ, Rogers KL, Hollande F, Merino D. The site of breast cancer metastases dictates their clonal composition and reversible transcriptomic profile. Sci Adv 2021; 7:eabf4408. [PMID: 34233875 PMCID: PMC8262813 DOI: 10.1126/sciadv.abf4408] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 05/25/2021] [Indexed: 05/03/2023]
Abstract
Intratumoral heterogeneity is a driver of breast cancer progression, but the nature of the clonal interactive network involved in this process remains unclear. Here, we optimized the use of optical barcoding to visualize and characterize 31 cancer subclones in vivo. By mapping the clonal composition of thousands of metastases in two clinically relevant sites, the lungs and liver, we found that metastases were highly polyclonal in lungs but not in the liver. Furthermore, the transcriptome of the subclones varied according to their metastatic niche. We also identified a reversible niche-driven signature that was conserved in lung and liver metastases collected during patient autopsies. Among this signature, we found that the tumor necrosis factor-α pathway was up-regulated in lung compared to liver metastases, and inhibition of this pathway affected metastasis diversity. These results highlight that the cellular and molecular heterogeneity observed in metastases is largely dictated by the tumor microenvironment.
Collapse
Affiliation(s)
- Jean Berthelet
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia.
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Verena C Wimmer
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Holly J Whitfield
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Antonin Serrano
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Thomas Boudier
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Stefano Mangiola
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| | - Michal Merdas
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Farrah El-Saafin
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - David Baloyan
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Jordan Wilcox
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Steven Wilcox
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Adam C Parslow
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Anthony T Papenfuss
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC 3000, Australia
| | - Belinda Yeo
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Austin Health, Heidelberg, VIC 3084, Australia
| | - Matthias Ernst
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Bhupinder Pal
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Robin L Anderson
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Peter MacCallum Cancer Centre, Melbourne, VIC 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC 3000, Australia
| | - Melissa J Davis
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Clinical Pathology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Melbourne, VIC 3000, Australia
| | - Kelly L Rogers
- Advanced Technology and Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Frédéric Hollande
- Department of Clinical Pathology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Melbourne, VIC 3000, Australia
- University of Melbourne Centre for Cancer Research, Victorian Comprehensive Cancer Centre, Melbourne, VIC 3000, Australia
| | - Delphine Merino
- Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia.
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry, and Health Science, The University of Melbourne, Parkville, VIC 3010, Australia
- Immunology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
| |
Collapse
|
13
|
Duckworth BC, Lafouresse F, Wimmer VC, Broomfield BJ, Dalit L, Alexandre YO, Sheikh AA, Qin RZ, Alvarado C, Mielke LA, Pellegrini M, Mueller SN, Boudier T, Rogers KL, Groom JR. Effector and stem-like memory cell fates are imprinted in distinct lymph node niches directed by CXCR3 ligands. Nat Immunol 2021; 22:434-448. [PMID: 33649580 DOI: 10.1038/s41590-021-00878-5] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 01/14/2021] [Indexed: 02/07/2023]
Abstract
T cells dynamically interact with multiple, distinct cellular subsets to determine effector and memory differentiation. Here, we developed a platform to quantify cell location in three dimensions to determine the spatial requirements that direct T cell fate. After viral infection, we demonstrated that CD8+ effector T cell differentiation is associated with positioning at the lymph node periphery. This was instructed by CXCR3 signaling since, in its absence, T cells are confined to the lymph node center and alternatively differentiate into stem-like memory cell precursors. By mapping the cellular sources of CXCR3 ligands, we demonstrated that CXCL9 and CXCL10 are expressed by spatially distinct dendritic and stromal cell subsets. Unlike effector cells, retention of stem-like memory precursors in the paracortex is associated with CCR7 expression. Finally, we demonstrated that T cell location can be tuned, through deficiency in CXCL10 or type I interferon signaling, to promote effector or stem-like memory fates.
Collapse
MESH Headings
- Animals
- Arenaviridae Infections/genetics
- Arenaviridae Infections/immunology
- Arenaviridae Infections/metabolism
- Arenaviridae Infections/virology
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/virology
- Cell Differentiation
- Cell Lineage
- Cells, Cultured
- Chemokine CXCL10/genetics
- Chemokine CXCL10/metabolism
- Chemokine CXCL9/genetics
- Chemokine CXCL9/metabolism
- Chemotaxis, Leukocyte
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Disease Models, Animal
- Host-Pathogen Interactions
- Immunologic Memory
- Interferon Type I/metabolism
- Ligands
- Lymph Nodes/immunology
- Lymph Nodes/metabolism
- Lymph Nodes/virology
- Lymphocytic choriomeningitis virus/immunology
- Lymphocytic choriomeningitis virus/pathogenicity
- Mice, Inbred C57BL
- Mice, Knockout
- Phenotype
- Precursor Cells, T-Lymphoid/immunology
- Precursor Cells, T-Lymphoid/metabolism
- Precursor Cells, T-Lymphoid/virology
- Receptor, Interferon alpha-beta/genetics
- Receptor, Interferon alpha-beta/metabolism
- Receptors, CCR7/metabolism
- Receptors, CXCR3/genetics
- Receptors, CXCR3/metabolism
- Signal Transduction
- Stem Cell Niche
- Stromal Cells/immunology
- Stromal Cells/metabolism
- Mice
Collapse
Affiliation(s)
- Brigette C Duckworth
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia.
| | - Fanny Lafouresse
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Centre de Recherches en Cancérologie de Toulouse, INSERM U1037, Equipe Labellisée Ligue Nationale Contre le Cancer, Université de Toulouse III-Paul Sabatier, Toulouse, France
| | - Verena C Wimmer
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Benjamin J Broomfield
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Lennard Dalit
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Yannick O Alexandre
- Department of Microbiology and Immunology, The University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Amania A Sheikh
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Raymond Z Qin
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Carolina Alvarado
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Lisa A Mielke
- Olivia Newton-John Cancer Research Institute, La Trobe University School of Cancer Medicine, Heidelberg, Victoria, Australia
| | - Marc Pellegrini
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Division of Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Scott N Mueller
- Department of Microbiology and Immunology, The University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
- The Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Melbourne, Melbourne, Victoria, Australia
| | - Thomas Boudier
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Sorbonne Université, Paris, France
| | - Kelly L Rogers
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- Centre for Dynamic Imaging, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Joanna R Groom
- Division of Immunology, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia.
| |
Collapse
|
14
|
Ratnayake D, Nguyen PD, Rossello FJ, Wimmer VC, Tan JL, Galvis LA, Julier Z, Wood AJ, Boudier T, Isiaku AI, Berger S, Oorschot V, Sonntag C, Rogers KL, Marcelle C, Lieschke GJ, Martino MM, Bakkers J, Currie PD. Macrophages provide a transient muscle stem cell niche via NAMPT secretion. Nature 2021; 591:281-287. [PMID: 33568815 DOI: 10.1038/s41586-021-03199-7] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 01/07/2021] [Indexed: 01/30/2023]
Abstract
Skeletal muscle regenerates through the activation of resident stem cells. Termed satellite cells, these normally quiescent cells are induced to proliferate by wound-derived signals1. Identifying the source and nature of these cues has been hampered by an inability to visualize the complex cell interactions that occur within the wound. Here we use muscle injury models in zebrafish to systematically capture the interactions between satellite cells and the innate immune system after injury, in real time, throughout the repair process. This analysis revealed that a specific subset of macrophages 'dwell' within the injury, establishing a transient but obligate niche for stem cell proliferation. Single-cell profiling identified proliferative signals that are secreted by dwelling macrophages, which include the cytokine nicotinamide phosphoribosyltransferase (Nampt, which is also known as visfatin or PBEF in humans). Nampt secretion from the macrophage niche is required for muscle regeneration, acting through the C-C motif chemokine receptor type 5 (Ccr5), which is expressed on muscle stem cells. This analysis shows that in addition to their ability to modulate the immune response, specific macrophage populations also provide a transient stem-cell-activating niche, directly supplying proliferation-inducing cues that govern the repair process that is mediated by muscle stem cells. This study demonstrates that macrophage-derived niche signals for muscle stem cells, such as NAMPT, can be applied as new therapeutic modalities for skeletal muscle injury and disease.
Collapse
Affiliation(s)
- Dhanushika Ratnayake
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Phong D Nguyen
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Medical Physiology, Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Fernando J Rossello
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,University of Melbourne Centre for Cancer Research, The University of Melbourne, Melbourne, Victoria, Australia
| | - Verena C Wimmer
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Jean L Tan
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Laura A Galvis
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Institut NeuroMyoGène (INMG), University Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon, France
| | - Ziad Julier
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Alasdair J Wood
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Thomas Boudier
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Abdulsalam I Isiaku
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Silke Berger
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Viola Oorschot
- Monash Ramaciotti Centre for Cryo Electron Microscopy, Monash University, Melbourne, Victoria, Australia.,European Molecular Biology Laboratory, Electron Microscopy Core Facility, Heidelberg, Germany
| | - Carmen Sonntag
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Kelly L Rogers
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria, Australia
| | - Christophe Marcelle
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,Institut NeuroMyoGène (INMG), University Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon, France
| | - Graham J Lieschke
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia
| | - Mikaël M Martino
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia.,EMBL Australia, Monash University, Clayton, Victoria, Australia
| | - Jeroen Bakkers
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and University Medical Center Utrecht, Utrecht, The Netherlands.,Department of Medical Physiology, Division of Heart and Lungs, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Peter D Currie
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, Australia. .,EMBL Australia, Monash University, Clayton, Victoria, Australia.
| |
Collapse
|
15
|
Samson AL, Fitzgibbon C, Patel KM, Hildebrand JM, Whitehead LW, Rimes JS, Jacobsen AV, Horne CR, Gavin XJ, Young SN, Rogers KL, Hawkins ED, Murphy JM. A toolbox for imaging RIPK1, RIPK3, and MLKL in mouse and human cells. Cell Death Differ 2021; 28:2126-2144. [PMID: 33589776 DOI: 10.1038/s41418-021-00742-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 12/18/2022] Open
Abstract
Necroptosis is a lytic, inflammatory cell death pathway that is dysregulated in many human pathologies. The pathway is executed by a core machinery comprising the RIPK1 and RIPK3 kinases, which assemble into necrosomes in the cytoplasm, and the terminal effector pseudokinase, MLKL. RIPK3-mediated phosphorylation of MLKL induces oligomerization and translocation to the plasma membrane where MLKL accumulates as hotspots and perturbs the lipid bilayer to cause death. The precise choreography of events in the pathway, where they occur within cells, and pathway differences between species, are of immense interest. However, they have been poorly characterized due to a dearth of validated antibodies for microscopy studies. Here, we describe a toolbox of antibodies for immunofluorescent detection of the core necroptosis effectors, RIPK1, RIPK3, and MLKL, and their phosphorylated forms, in human and mouse cells. By comparing reactivity with endogenous proteins in wild-type cells and knockout controls in basal and necroptosis-inducing conditions, we characterise the specificity of frequently-used commercial and recently-developed antibodies for detection of necroptosis signaling events. Importantly, our findings demonstrate that not all frequently-used antibodies are suitable for monitoring necroptosis by immunofluorescence microscopy, and methanol- is preferable to paraformaldehyde-fixation for robust detection of specific RIPK1, RIPK3, and MLKL signals.
Collapse
Affiliation(s)
- André L Samson
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
| | - Cheree Fitzgibbon
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Komal M Patel
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Joanne M Hildebrand
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Lachlan W Whitehead
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Joel S Rimes
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Annette V Jacobsen
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Christopher R Horne
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Xavier J Gavin
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Samuel N Young
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Edwin D Hawkins
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - James M Murphy
- Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
| |
Collapse
|
16
|
Keenan CR, Mlodzianoski MJ, Coughlan HD, Bediaga NG, Naselli G, Lucas EC, Wang Q, de Graaf CA, Hilton DJ, Harrison LC, Smyth GK, Rogers KL, Boudier T, Allan RS, Johanson TM. Chromosomes distribute randomly to, but not within, human neutrophil nuclear lobes. iScience 2021; 24:102161. [PMID: 33665577 PMCID: PMC7905186 DOI: 10.1016/j.isci.2021.102161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/12/2020] [Revised: 11/24/2020] [Accepted: 02/03/2021] [Indexed: 11/19/2022] Open
Abstract
The proximity pattern and radial distribution of chromosome territories within spherical nuclei are random and non-random, respectively. Whether this distribution pattern is conserved in the partitioned or lobed nuclei of polymorphonuclear cells is unclear. Here we use chromosome paint technology to examine the chromosome territories of all 46 chromosomes in hundreds of single human neutrophils - an abundant and famously polymorphonuclear immune cell. By comparing the distribution of chromosomes to randomly shuffled controls and validating with orthogonal chromosome conformation capture technology, we show for the first time that human chromosomes randomly distribute to neutrophil nuclear lobes, while maintaining a non-random radial distribution within these lobes. Furthermore, we demonstrate that chromosome length correlates with three-dimensional volume not only in neutrophils but other human immune cells. This work demonstrates that chromosomes are largely passive passengers during the neutrophil lobing process but are able to subsequently maintain their macro-level organization within lobes.
Collapse
Affiliation(s)
- Christine R. Keenan
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Michael J. Mlodzianoski
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Hannah D. Coughlan
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Naiara G. Bediaga
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Gaetano Naselli
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Erin C. Lucas
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Qike Wang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Carolyn A. de Graaf
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Douglas J. Hilton
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Leonard C. Harrison
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Gordon K. Smyth
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- School of Mathematics and Statistics, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kelly L. Rogers
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Thomas Boudier
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
- Institute of Biology Paris-Seine, Sorbonne Université, Paris, France
| | - Rhys S. Allan
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Timothy M. Johanson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
- Corresponding author
| |
Collapse
|
17
|
Yu CH, Davidson S, Harapas CR, Hilton JB, Mlodzianoski MJ, Laohamonthonkul P, Louis C, Low RRJ, Moecking J, De Nardo D, Balka KR, Calleja DJ, Moghaddas F, Ni E, McLean CA, Samson AL, Tyebji S, Tonkin CJ, Bye CR, Turner BJ, Pepin G, Gantier MP, Rogers KL, McArthur K, Crouch PJ, Masters SL. TDP-43 Triggers Mitochondrial DNA Release via mPTP to Activate cGAS/STING in ALS. Cell 2020; 183:636-649.e18. [PMID: 33031745 PMCID: PMC7599077 DOI: 10.1016/j.cell.2020.09.020] [Citation(s) in RCA: 408] [Impact Index Per Article: 102.0] [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: 01/26/2020] [Revised: 07/21/2020] [Accepted: 09/08/2020] [Indexed: 02/07/2023]
Abstract
Cytoplasmic accumulation of TDP-43 is a disease hallmark for many cases of amyotrophic lateral sclerosis (ALS), associated with a neuroinflammatory cytokine profile related to upregulation of nuclear factor κB (NF-κB) and type I interferon (IFN) pathways. Here we show that this inflammation is driven by the cytoplasmic DNA sensor cyclic guanosine monophosphate (GMP)-AMP synthase (cGAS) when TDP-43 invades mitochondria and releases DNA via the permeability transition pore. Pharmacologic inhibition or genetic deletion of cGAS and its downstream signaling partner STING prevents upregulation of NF-κB and type I IFN induced by TDP-43 in induced pluripotent stem cell (iPSC)-derived motor neurons and in TDP-43 mutant mice. Finally, we document elevated levels of the specific cGAS signaling metabolite cGAMP in spinal cord samples from patients, which may be a biomarker of mtDNA release and cGAS/STING activation in ALS. Our results identify mtDNA release and cGAS/STING activation as critical determinants of TDP-43-associated pathology and demonstrate the potential for targeting this pathway in ALS. TDP-43 enters mitochondria, triggers mtDNA release via the mPTP TDP-43-induced cytosolic mtDNA accumulation activates the cGAS/STING pathway Evidence of cytoplasmic mtDNA was found in ALS patient cells and disease models Blocking STING prevents inflammation and neurodegeneration in vitro and in vivo
Collapse
Affiliation(s)
- Chien-Hsiung Yu
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Sophia Davidson
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Cassandra R Harapas
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - James B Hilton
- Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, VIC 3010, Australia; Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Michael J Mlodzianoski
- Centre for Dynamic Imaging, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Pawat Laohamonthonkul
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Cynthia Louis
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Ronnie Ren Jie Low
- Personalised Oncology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Jonas Moecking
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Institute of Structural Biology, University of Bonn, 53127 Bonn, Germany
| | - Dominic De Nardo
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3168, Australia
| | - Katherine R Balka
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3168, Australia
| | - Dale J Calleja
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Fiona Moghaddas
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Department of Immunology and Allergy, The Royal Melbourne Hospital, Parkville, VIC 3052, Australia
| | - Erya Ni
- Infection and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Catriona A McLean
- Anatomical Pathology, The Alfred Hospital, Melbourne, VIC 3004, Australia
| | - Andre L Samson
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Shiraz Tyebji
- Infection and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Christopher J Tonkin
- Infection and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Christopher R Bye
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Bradley J Turner
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Genevieve Pepin
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia; Department of Molecular and Translational Science, Monash University, Clayton, VIC 3168, Australia
| | - Michael P Gantier
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia; Department of Molecular and Translational Science, Monash University, Clayton, VIC 3168, Australia
| | - Kelly L Rogers
- Centre for Dynamic Imaging, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Kate McArthur
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3168, Australia
| | - Peter J Crouch
- Department of Pharmacology and Therapeutics, University of Melbourne, Parkville, VIC 3010, Australia; Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3010, Australia
| | - Seth L Masters
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia; Immunology Laboratory, Guangzhou Institute of Paediatrics, Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong 510623, China.
| |
Collapse
|
18
|
Doerflinger M, Deng Y, Whitney P, Salvamoser R, Engel S, Kueh AJ, Tai L, Bachem A, Gressier E, Geoghegan ND, Wilcox S, Rogers KL, Garnham AL, Dengler MA, Bader SM, Ebert G, Pearson JS, De Nardo D, Wang N, Yang C, Pereira M, Bryant CE, Strugnell RA, Vince JE, Pellegrini M, Strasser A, Bedoui S, Herold MJ. Flexible Usage and Interconnectivity of Diverse Cell Death Pathways Protect against Intracellular Infection. Immunity 2020; 53:533-547.e7. [PMID: 32735843 PMCID: PMC7500851 DOI: 10.1016/j.immuni.2020.07.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [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: 03/02/2020] [Revised: 06/12/2020] [Accepted: 07/02/2020] [Indexed: 12/31/2022]
Abstract
Programmed cell death contributes to host defense against pathogens. To investigate the relative importance of pyroptosis, necroptosis, and apoptosis during Salmonella infection, we infected mice and macrophages deficient for diverse combinations of caspases-1, -11, -12, and -8 and receptor interacting serine/threonine kinase 3 (RIPK3). Loss of pyroptosis, caspase-8-driven apoptosis, or necroptosis had minor impact on Salmonella control. However, combined deficiency of these cell death pathways caused loss of bacterial control in mice and their macrophages, demonstrating that host defense can employ varying components of several cell death pathways to limit intracellular infections. This flexible use of distinct cell death pathways involved extensive cross-talk between initiators and effectors of pyroptosis and apoptosis, where initiator caspases-1 and -8 also functioned as executioners when all known effectors of cell death were absent. These findings uncover a highly coordinated and flexible cell death system with in-built fail-safe processes that protect the host from intracellular infections.
Collapse
Affiliation(s)
- Marcel Doerflinger
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Yexuan Deng
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Paul Whitney
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Ranja Salvamoser
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Sven Engel
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Andrew J Kueh
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Lin Tai
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Annabell Bachem
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Elise Gressier
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Niall D Geoghegan
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Stephen Wilcox
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Kelly L Rogers
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Alexandra L Garnham
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Michael A Dengler
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Stefanie M Bader
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Gregor Ebert
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Jaclyn S Pearson
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia; Department of Molecular and Translational Research, Monash University, Clayton, VIC, Australia; Department of Microbiology, Monash University, Clayton, VIC, Australia
| | - Dominic De Nardo
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Nancy Wang
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Chenying Yang
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - Milton Pereira
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA; University of Cambridge, Cambridge, UK
| | | | - Richard A Strugnell
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Marc Pellegrini
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Andreas Strasser
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
| | - Sammy Bedoui
- Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia; Department of Microbiology and Immunology at the Doherty Institute for Infection and Immunity, The University of Melbourne, Parkville, VIC, Australia.
| | - Marco J Herold
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
| |
Collapse
|
19
|
McArthur K, Whitehead LW, Heddleston JM, Li L, Padman BS, Oorschot V, Geoghegan ND, Chappaz S, Davidson S, San Chin H, Lane RM, Dramicanin M, Saunders TL, Sugiana C, Lessene R, Osellame LD, Chew TL, Dewson G, Lazarou M, Ramm G, Lessene G, Ryan MT, Rogers KL, van Delft MF, Kile BT. BAK/BAX macropores facilitate mitochondrial herniation and mtDNA efflux during apoptosis. Science 2018; 359:359/6378/eaao6047. [DOI: 10.1126/science.aao6047] [Citation(s) in RCA: 376] [Impact Index Per Article: 62.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 12/20/2017] [Accepted: 01/24/2018] [Indexed: 12/17/2022]
|
20
|
Chatfield SM, Grebe K, Whitehead LW, Rogers KL, Nebl T, Murphy JM, Wicks IP. Monosodium Urate Crystals Generate Nuclease-Resistant Neutrophil Extracellular Traps via a Distinct Molecular Pathway. J Immunol 2018; 200:1802-1816. [PMID: 29367211 DOI: 10.4049/jimmunol.1701382] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/21/2017] [Indexed: 11/19/2022]
Abstract
Neutrophil extracellular traps (NETs) and the cell death associated with it (NETosis) have been implicated in numerous diseases. Mechanistic studies of NETosis have typically relied on nonphysiological stimuli, such as PMA. The human disease of gout is caused by monosodium urate (MSU) crystals. We observed that DNA consistent with NETs is present in fluid from acutely inflamed joints of gout patients. NETs also coat the crystals found in uninflamed tophi of chronic gout patients. We developed a quantitative, live cell imaging assay, which measures the key features of NETosis, namely, cell death and chromatin decondensation. We show that MSU and other physiologically relevant crystals induce NETosis through a molecular pathway that is distinct from PMA and Candida hyphae. Crystals interact with lysosomes to induce NADPH oxidase-independent cell death, with postmortem chromatin decondensation mediated by neutrophil elastase. The resulting MSU-induced NETs are enriched for actin and are resistant to serum and DNase degradation. These findings demonstrate a distinct physiological NETosis pathway in response to MSU crystals, which coats MSU crystals in DNA that persists in tissues as gouty tophi.
Collapse
Affiliation(s)
- Simon M Chatfield
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and.,Department of Rheumatology, The Royal Melbourne Hospital, Parkville, Victoria 3050, Australia
| | - Kathrin Grebe
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and
| | - Lachlan W Whitehead
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and
| | - Kelly L Rogers
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and
| | - Thomas Nebl
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and
| | - James M Murphy
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; .,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and
| | - Ian P Wicks
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; .,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia; and.,Department of Rheumatology, The Royal Melbourne Hospital, Parkville, Victoria 3050, Australia
| |
Collapse
|
21
|
Yang ASP, O'Neill MT, Jennison C, Lopaticki S, Allison CC, Armistead JS, Erickson SM, Rogers KL, Ellisdon AM, Whisstock JC, Tweedell RE, Dinglasan RR, Douglas DN, Kneteman NM, Boddey JA. Cell Traversal Activity Is Important for Plasmodium falciparum Liver Infection in Humanized Mice. Cell Rep 2017; 18:3105-3116. [PMID: 28355563 DOI: 10.1016/j.celrep.2017.03.017] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 02/06/2017] [Accepted: 03/02/2017] [Indexed: 01/29/2023] Open
Abstract
Malaria sporozoites are deposited into the skin by mosquitoes and infect hepatocytes. The molecular basis of how Plasmodium falciparum sporozoites migrate through host cells is poorly understood, and direct evidence of its importance in vivo is lacking. Here, we generated traversal-deficient sporozoites by genetic disruption of sporozoite microneme protein essential for cell traversal (PfSPECT) or perforin-like protein 1 (PfPLP1). Loss of either gene did not affect P. falciparum growth in erythrocytes, in contrast with a previous report that PfPLP1 is essential for merozoite egress. However, although traversal-deficient sporozoites could invade hepatocytes in vitro, they could not establish normal liver infection in humanized mice. This is in contrast with NF54 sporozoites, which infected the humanized mice and developed into exoerythrocytic forms. This study demonstrates that SPECT and perforin-like protein 1 (PLP1) are critical for transcellular migration by P. falciparum sporozoites and demonstrates the importance of cell traversal for liver infection by this human pathogen.
Collapse
Affiliation(s)
- Annie S P Yang
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Matthew T O'Neill
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia
| | - Charlie Jennison
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Sash Lopaticki
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia
| | - Cody C Allison
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Jennifer S Armistead
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Sara M Erickson
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Kelly L Rogers
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia
| | - Andrew M Ellisdon
- Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton 3800, VIC, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton 3800, VIC, Australia
| | - James C Whisstock
- Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton 3800, VIC, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton 3800, VIC, Australia
| | - Rebecca E Tweedell
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Rhoel R Dinglasan
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| | - Donna N Douglas
- Department of Surgery, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Norman M Kneteman
- Department of Surgery, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Justin A Boddey
- Division of Infection and Immunity, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3052, VIC, Australia.
| |
Collapse
|
22
|
Whitehead LW, McArthur K, Geoghegan ND, Rogers KL. The reinvention of twentieth century microscopy for three‐dimensional imaging. Immunol Cell Biol 2017; 95:520-524. [DOI: 10.1038/icb.2017.36] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 04/21/2017] [Accepted: 04/23/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Lachlan W Whitehead
- Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology, University of Melbourne Parkville Victoria Australia
| | - Kate McArthur
- Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology, University of Melbourne Parkville Victoria Australia
| | - Niall D Geoghegan
- Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology, University of Melbourne Parkville Victoria Australia
| | - Kelly L Rogers
- Walter and Eliza Hall Institute of Medical Research Parkville Victoria Australia
- Department of Medical Biology, University of Melbourne Parkville Victoria Australia
| |
Collapse
|
23
|
Stewart RJ, Whitehead L, Nijagal B, Sleebs BE, Lessene G, McConville MJ, Rogers KL, Tonkin CJ. Analysis of Ca 2+ mediated signaling regulating Toxoplasma infectivity reveals complex relationships between key molecules. Cell Microbiol 2017; 19. [PMID: 27781359 DOI: 10.1111/cmi.12685] [Citation(s) in RCA: 24] [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] [Received: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 12/28/2022]
Abstract
Host cell invasion, exit and parasite dissemination is critical to the pathogenesis of apicomplexan parasites such as Toxoplasma gondii and Plasmodium spp. These processes are regulated by intracellular Ca2+ signaling although the temporal dynamics of Ca2+ fluxes and down-stream second messenger pathways are poorly understood. Here, we use a genetically encoded biosensor, GFP-Calmodulin-M13-6 (GCaMP6), to capture Ca2+ flux in live Toxoplasma and investigate the role of Ca2+ signaling in egress and motility. Our analysis determines how environmental cues and signal activation influence intracellular Ca2+ flux, allowing placement of effector molecules within this pathway. Importantly, we have identified key interrelationships between cGMP and Ca2+ signaling that are required for activation of egress and motility. Furthermore, we extend this analysis to show that the Ca2+ Dependent Protein Kinases-TgCDPK1 and TgCDPK3-play a role in signal quenching before egress. This work highlights the interrelationships of second messenger pathways of Toxoplasma in space and time, which is likely required for pathogenesis of all apicomplexan species.
Collapse
Affiliation(s)
- Rebecca J Stewart
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Lachlan Whitehead
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Brunda Nijagal
- Metabolomics Australia, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Brad E Sleebs
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Guillaume Lessene
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia.,Department of Pharmacology and Therapeutics, The University of Melbourne, Melbourne, Victoria, Australia
| | - Malcolm J McConville
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Parkville, Australia
| | - Kelly L Rogers
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Christopher J Tonkin
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.,Department of Medical Biology, The University of Melbourne, Melbourne, Victoria, Australia
| |
Collapse
|
24
|
Riglar DT, Whitehead L, Cowman AF, Rogers KL, Baum J. Localisation-based imaging of malarial antigens during erythrocyte entry reaffirms a role for AMA1 but not MTRAP in invasion. J Cell Sci 2015; 129:228-42. [PMID: 26604223 PMCID: PMC4732298 DOI: 10.1242/jcs.177741] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 11/16/2015] [Indexed: 01/17/2023] Open
Abstract
Microscopy-based localisation of proteins during malaria parasite (Plasmodium) invasion of the erythrocyte is widely used for tentative assignment of protein function. To date, however, imaging has been limited by the rarity of invasion events and the poor resolution available, given the micron size of the parasite, which leads to a lack of quantitative measures for definitive localisation. Here, using computational image analysis we have attempted to assign relative protein localisation during invasion using wide-field deconvolution microscopy. By incorporating three-dimensional information we present a detailed assessment of known parasite effectors predicted to function during entry but as yet untested or for which data are equivocal. Our method, termed longitudinal intensity profiling, resolves confusion surrounding the localisation of apical membrane antigen 1 (AMA1) at the merozoite–erythrocyte junction and predicts that the merozoite thrombospondin-related anonymous protein (MTRAP) is unlikely to play a direct role in the mechanics of entry, an observation supported with additional biochemical evidence. This approach sets a benchmark for imaging of complex micron-scale events and cautions against simplistic interpretations of small numbers of representative images for the assignment of protein function or prioritisation of candidates as therapeutic targets. Highlighted Article: Here we develop a high-definition imaging approach to dissect and assign function to proteins involved in the rapid process of malaria parasite invasion of the human erythrocyte.
Collapse
Affiliation(s)
- David T Riglar
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, 3052, Australia Department of Medical Biology, University of Melbourne, Victoria, 3050, Melbourne, Australia
| | - Lachlan Whitehead
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, 3052, Australia Department of Medical Biology, University of Melbourne, Victoria, 3050, Melbourne, Australia
| | - Alan F Cowman
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, 3052, Australia Department of Medical Biology, University of Melbourne, Victoria, 3050, Melbourne, Australia
| | - Kelly L Rogers
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria, 3052, Australia Department of Medical Biology, University of Melbourne, Victoria, 3050, Melbourne, Australia
| | - Jake Baum
- Department of Life Sciences, Imperial College, London SW7 2AZ, UK
| |
Collapse
|
25
|
Dragavon J, Sinow C, Holland AD, Rekiki A, Theodorou I, Samson C, Blazquez S, Rogers KL, Tournebize R, Shorte SL. A step beyond BRET: Fluorescence by Unbound Excitation from Luminescence (FUEL). J Vis Exp 2014. [PMID: 24894759 PMCID: PMC4207116 DOI: 10.3791/51549] [Citation(s) in RCA: 2] [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] [Indexed: 11/22/2022] Open
Abstract
Fluorescence by Unbound Excitation from Luminescence (FUEL) is a radiative excitation-emission process that produces increased signal and contrast enhancement in vitro and in vivo. FUEL shares many of the same underlying principles as Bioluminescence Resonance Energy Transfer (BRET), yet greatly differs in the acceptable working distances between the luminescent source and the fluorescent entity. While BRET is effectively limited to a maximum of 2 times the Förster radius, commonly less than 14 nm, FUEL can occur at distances up to µm or even cm in the absence of an optical absorber. Here we expand upon the foundation and applicability of FUEL by reviewing the relevant principles behind the phenomenon and demonstrate its compatibility with a wide variety of fluorophores and fluorescent nanoparticles. Further, the utility of antibody-targeted FUEL is explored. The examples shown here provide evidence that FUEL can be utilized for applications where BRET is not possible, filling the spatial void that exists between BRET and traditional whole animal imaging.
Collapse
Affiliation(s)
- Joseph Dragavon
- Plate-Forme d'Imagerie Dynamique, Imagopole, Institut Pasteur;
| | - Carolyn Sinow
- Department of Radiation Oncology, Stanford School of Medicine
| | | | | | - Ioanna Theodorou
- Service Hospitalier Frédéric Joliot, Institut d'Imagerie Biomédicale
| | | | | | | | - Régis Tournebize
- Plate-Forme d'Imagerie Dynamique, Imagopole, Institut Pasteur; Unité INSERM U786, Institut Pasteur; Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur
| | | |
Collapse
|
26
|
Kan A, Tan YH, Angrisano F, Hanssen E, Rogers KL, Whitehead L, Mollard VP, Cozijnsen A, Delves MJ, Crawford S, Sinden RE, McFadden GI, Leckie C, Bailey J, Baum J. Quantitative analysis of Plasmodium ookinete motion in three dimensions suggests a critical role for cell shape in the biomechanics of malaria parasite gliding motility. Cell Microbiol 2014; 16:734-50. [PMID: 24612056 PMCID: PMC4286792 DOI: 10.1111/cmi.12283] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [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: 10/04/2013] [Revised: 01/22/2014] [Accepted: 02/13/2014] [Indexed: 11/28/2022]
Abstract
Motility is a fundamental part of cellular life and survival, including for Plasmodium parasites--single-celled protozoan pathogens responsible for human malaria. The motile life cycle forms achieve motility, called gliding, via the activity of an internal actomyosin motor. Although gliding is based on the well-studied system of actin and myosin, its core biomechanics are not completely understood. Currently accepted models suggest it results from a specifically organized cellular motor that produces a rearward directional force. When linked to surface-bound adhesins, this force is passaged to the cell posterior, propelling the parasite forwards. Gliding motility is observed in all three life cycle stages of Plasmodium: sporozoites, merozoites and ookinetes. However, it is only the ookinetes--formed inside the midgut of infected mosquitoes--that display continuous gliding without the necessity of host cell entry. This makes them ideal candidates for invasion-free biomechanical analysis. Here we apply a plate-based imaging approach to study ookinete motion in three-dimensional (3D) space to understand Plasmodium cell motility and how movement facilitates midgut colonization. Using single-cell tracking and numerical analysis of parasite motion in 3D, our analysis demonstrates that ookinetes move with a conserved left-handed helical trajectory. Investigation of cell morphology suggests this trajectory may be based on the ookinete subpellicular cytoskeleton, with complementary whole and subcellular electron microscopy showing that, like their motion paths, ookinetes share a conserved left-handed corkscrew shape and underlying twisted microtubular architecture. Through comparisons of 3D movement between wild-type ookinetes and a cytoskeleton-knockout mutant we demonstrate that perturbation of cell shape changes motion from helical to broadly linear. Therefore, while the precise linkages between cellular architecture and actomyosin motor organization remain unknown, our analysis suggests that the molecular basis of cell shape may, in addition to motor force, be a key adaptive strategy for malaria parasite dissemination and, as such, transmission.
Collapse
Affiliation(s)
- Andrey Kan
- Victoria Research Laboratory, National ICT Australia (NICTA), Department of Computing and Information Systems, University of Melbourne, Melbourne, Vic., 3010, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Deris ZZ, Swarbrick JD, Roberts KD, Azad MAK, Akter J, Horne AS, Nation RL, Rogers KL, Thompson PE, Velkov T, Li J. Probing the penetration of antimicrobial polymyxin lipopeptides into gram-negative bacteria. Bioconjug Chem 2014; 25:750-60. [PMID: 24635310 PMCID: PMC3993906 DOI: 10.1021/bc500094d] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [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: 12/25/2022]
Abstract
![]()
The dry antibiotic development pipeline
coupled with the emergence
of multidrug resistant Gram-negative ‘superbugs’ has
driven the revival of the polymyxin lipopeptide antibiotics. Polymyxin
resistance implies a total lack of antibiotics for the treatment of
life-threatening infections. The lack of molecular imaging probes
that possess native polymyxin-like antibacterial activity is a barrier
to understanding the resistance mechanisms and the development of
a new generation of polymyxin lipopeptides. Here we report the regioselective
modification of the polymyxin B core scaffold at the N-terminus with the dansyl fluorophore to generate an active probe
that mimics polymyxin B pharmacologically. Time-lapse laser scanning
confocal microscopy imaging of the penetration of probe (1) into Gram-negative bacterial cells revealed that the probe initially
accumulates in the outer membrane and subsequently penetrates into
the inner membrane and finally the cytoplasm. The implementation of
this polymyxin-mimetic probe will advance the development of platforms
for the discovery of novel polymyxin lipopeptides with efficacy against
polymyxin-resistant strains.
Collapse
Affiliation(s)
- Zakuan Z Deris
- Drug Delivery, Disposition and Dynamics and §Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University , Melbourne, Victoria 3800, Australia
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Dragavon J, Rekiki A, Theodorou I, Samson C, Blazquez S, Rogers KL, Tournebize R, Shorte S. In vitro and in vivo demonstrations of Fluorescence by Unbound Excitation from Luminescence (FUEL). Methods Mol Biol 2014; 1098:259-270. [PMID: 24166383 DOI: 10.1007/978-1-62703-718-1_20] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Bioluminescence imaging is a powerful technique that allows for deep-tissue analysis in living, intact organisms. However, in vivo optical imaging is compounded by difficulties due to light scattering and absorption. While light scattering is relatively difficult to overcome and compensate, light absorption by biological tissue is strongly dependent upon wavelength. For example, light absorption by mammalian tissue is highest in the blue-yellow part of the visible energy spectrum. Many natural bioluminescent molecules emit photonic energy in this range, thus in vivo optical detection of these molecules is primarily limited by absorption. This has driven efforts for probe development aimed to enhance photonic emission of red light that is absorbed much less by mammalian tissue using either direct genetic manipulation, and/or resonance energy transfer methods. Here we describe a recently identified alternative approach termed Fluorescence by Unbound Excitation from Luminescence (FUEL), where bioluminescent molecules are able to induce a fluorescent response from fluorescent nanoparticles through an epifluorescence mechanism, thereby significantly increasing both the total number of detectable photons as well as the number of red photons produced.
Collapse
Affiliation(s)
- Joe Dragavon
- Plate-Forme d'Imagerie Dynamique, Imagopole, Institut Pasteur, Paris, France
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Zuccala ES, Gout AM, Dekiwadia C, Marapana DS, Angrisano F, Turnbull L, Riglar DT, Rogers KL, Whitchurch CB, Ralph SA, Speed TP, Baum J. Subcompartmentalisation of proteins in the rhoptries correlates with ordered events of erythrocyte invasion by the blood stage malaria parasite. PLoS One 2012; 7:e46160. [PMID: 23049965 PMCID: PMC3458004 DOI: 10.1371/journal.pone.0046160] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 08/27/2012] [Indexed: 11/18/2022] Open
Abstract
Host cell infection by apicomplexan parasites plays an essential role in lifecycle progression for these obligate intracellular pathogens. For most species, including the etiological agents of malaria and toxoplasmosis, infection requires active host-cell invasion dependent on formation of a tight junction – the organising interface between parasite and host cell during entry. Formation of this structure is not, however, shared across all Apicomplexa or indeed all parasite lifecycle stages. Here, using an in silico integrative genomic search and endogenous gene-tagging strategy, we sought to characterise proteins that function specifically during junction-dependent invasion, a class of proteins we term invasins to distinguish them from adhesins that function in species specific host-cell recognition. High-definition imaging of tagged Plasmodium falciparum invasins localised proteins to multiple cellular compartments of the blood stage merozoite. This includes several that localise to distinct subcompartments within the rhoptries. While originating from the same organelle, however, each has very different dynamics during invasion. Apical Sushi Protein and Rhoptry Neck protein 2 release early, following the junction, whilst a novel rhoptry protein PFF0645c releases only after invasion is complete. This supports the idea that organisation of proteins within a secretory organelle determines the order and destination of protein secretion and provides a localisation-based classification strategy for predicting invasin function during apicomplexan parasite invasion.
Collapse
Affiliation(s)
- Elizabeth S. Zuccala
- Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Alexander M. Gout
- Bioinformatics Divisions, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Chaitali Dekiwadia
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Danushka S. Marapana
- Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
| | - Fiona Angrisano
- Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Lynne Turnbull
- The ithree Institute, University of Technology Sydney, Sydney, New South Wales, Australia
| | - David T. Riglar
- Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Kelly L. Rogers
- Imaging Facility, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Cynthia B. Whitchurch
- The ithree Institute, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Stuart A. Ralph
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Terence P. Speed
- Bioinformatics Divisions, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Jake Baum
- Infection and Immunity, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
- * E-mail:
| |
Collapse
|
30
|
Pase L, Layton JE, Wittmann C, Ellett F, Nowell CJ, Reyes-Aldasoro CC, Varma S, Rogers KL, Hall CJ, Keightley MC, Crosier PS, Grabher C, Heath JK, Renshaw SA, Lieschke GJ. Neutrophil-delivered myeloperoxidase dampens the hydrogen peroxide burst after tissue wounding in zebrafish. Curr Biol 2012; 22:1818-24. [PMID: 22940471 DOI: 10.1016/j.cub.2012.07.060] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 07/05/2012] [Accepted: 07/27/2012] [Indexed: 01/15/2023]
Abstract
Prompt neutrophil arrival is critical for host defense immediately after injury [1-3]. Following wounding, a hydrogen peroxide (H(2)O(2)) burst generated in injured tissues is the earliest known leukocyte chemoattractant [4]. Generating this tissue-scale H(2)O(2) gradient uses dual oxidase [4] and neutrophils sense H(2)O(2) by a mechanism involving the LYN Src-family kinase [5], but the molecular mechanisms responsible for H(2)O(2) clearance are unknown [6]. Neutrophils carry abundant amounts of myeloperoxidase, an enzyme catalyzing an H(2)O(2)-consuming reaction [7, 8]. We hypothesized that this neutrophil-delivered myeloperoxidase downregulates the high tissue H(2)O(2) concentrations that follow wounding. This was tested in zebrafish using simultaneous fluorophore-based imaging of H(2)O(2) concentrations and leukocytes [4, 9-11] and a new neutrophil-replete but myeloperoxidase-deficient mutant (durif). Leukocyte-depleted zebrafish had an abnormally sustained wound H(2)O(2) burst, indicating that leukocytes themselves were required for H(2)O(2) downregulation. Myeloperoxidase-deficient zebrafish also had abnormally sustained high wound H(2)O(2) concentrations despite similar numbers of arriving neutrophils. A local H(2)O(2)/myeloperoxidase interaction within wound-recruited neutrophils was demonstrated. These data demonstrate that leukocyte-delivered myeloperoxidase cell-autonomously downregulates tissue-generated wound H(2)O(2) gradients in vivo, defining a new requirement for myeloperoxidase during inflammation. Durif provides a new animal model of myeloperoxidase deficiency closely phenocopying the prevalent human disorder [7, 12, 13], offering unique possibilities for investigating its clinical consequences.
Collapse
Affiliation(s)
- Luke Pase
- Cancer and Haematology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Josefsson EC, James C, Henley KJ, Debrincat MA, Rogers KL, Dowling MR, White MJ, Kruse EA, Lane RM, Ellis S, Nurden P, Mason KD, O'Reilly LA, Roberts AW, Metcalf D, Huang DC, Kile BT. Megakaryocytes possess a functional intrinsic apoptosis pathway that must be restrained to survive and produce platelets. J Biophys Biochem Cytol 2011. [DOI: 10.1083/jcb1946oia12] [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: 11/22/2022] Open
|
32
|
Josefsson EC, James C, Henley KJ, Debrincat MA, Rogers KL, Dowling MR, White MJ, Kruse EA, Lane RM, Ellis S, Nurden P, Mason KD, O'Reilly LA, Roberts AW, Metcalf D, Huang DCS, Kile BT. Megakaryocytes possess a functional intrinsic apoptosis pathway that must be restrained to survive and produce platelets. ACTA ACUST UNITED AC 2011; 208:2017-31. [PMID: 21911424 PMCID: PMC3182050 DOI: 10.1084/jem.20110750] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [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: 12/22/2022]
Abstract
Deletion of Bak and Bax, the effectors of mitochondrial apoptosis, does not affect platelet production, however, loss of prosurvival Bcl-xL results in megakaryocyte apoptosis and failure of platelet shedding. It is believed that megakaryocytes undergo a specialized form of apoptosis to shed platelets. Conversely, a range of pathophysiological insults, including chemotherapy, are thought to cause thrombocytopenia by inducing the apoptotic death of megakaryocytes and their progenitors. To resolve this paradox, we generated mice with hematopoietic- or megakaryocyte-specific deletions of the essential mediators of apoptosis, Bak and Bax. We found that platelet production was unperturbed. In stark contrast, deletion of the prosurvival protein Bcl-xL resulted in megakaryocyte apoptosis and a failure of platelet shedding. This could be rescued by deletion of Bak and Bax. We examined the effect on megakaryocytes of three agents that activate the intrinsic apoptosis pathway in other cell types: etoposide, staurosporine, and the BH3 mimetic ABT-737. All three triggered mitochondrial damage, caspase activation, and cell death. Deletion of Bak and Bax rendered megakaryocytes resistant to etoposide and ABT-737. In vivo, mice with a Bak−/− Bax−/− hematopoietic system were protected against thrombocytopenia induced by the chemotherapeutic agent carboplatin. Thus, megakaryocytes do not activate the intrinsic pathway to generate platelets; rather, the opposite is true: they must restrain it to survive and progress safely through proplatelet formation and platelet shedding.
Collapse
Affiliation(s)
- Emma C Josefsson
- Molecular Medicine Division, Cancer and Hematology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville 3052, Australia; Department of Medical Biology, The University of Melbourne, Parkville 3010, Australia
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Short KR, Diavatopoulos DA, Reading PC, Brown LE, Rogers KL, Strugnell RA, Wijburg OLC. Using bioluminescent imaging to investigate synergism between Streptococcus pneumoniae and influenza A virus in infant mice. J Vis Exp 2011:2357. [PMID: 21525841 DOI: 10.3791/2357] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
During the 1918 influenza virus pandemic, which killed approximately 50 million people worldwide, the majority of fatalities were not the result of infection with influenza virus alone. Instead, most individuals are thought to have succumbed to a secondary bacterial infection, predominately caused by the bacterium Streptococcus pneumoniae (the pneumococcus). The synergistic relationship between infections caused by influenza virus and the pneumococcus has subsequently been observed during the 1957 Asian influenza virus pandemic, as well as during seasonal outbreaks of the virus (reviewed in (1, 2)). Here, we describe a protocol used to investigate the mechanism(s) that may be involved in increased morbidity as a result of concurrent influenza A virus and S. pneumoniae infection. We have developed an infant murine model to reliably and reproducibly demonstrate the effects of influenza virus infection of mice colonised with S. pneumoniae. Using this protocol, we have provided the first insight into the kinetics of pneumococcal transmission between co-housed, neonatal mice using in vivo imaging.
Collapse
Affiliation(s)
- Kirsty R Short
- Department of Microbiology and Immunology, University of Melbourne
| | | | | | | | | | | | | |
Collapse
|
34
|
Grice ID, Rogers KL, Griffiths LR. Isolation of Bioactive Compounds That Relate to the Anti-Platelet Activity of Cymbopogon ambiguus. Evid Based Complement Alternat Med 2011; 2011:467134. [PMID: 20047890 PMCID: PMC3135635 DOI: 10.1093/ecam/nep213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 11/19/2009] [Indexed: 11/17/2022]
Abstract
Infusions and decoctions of Cymbopogon ambiguus have been used traditionally in Australia for the treatment of headache, chest infections and muscle cramps. The aim of the present study was to screen and identify bioactive compounds from C. ambiguus that could explain this plant's anti-headache activity. A dichloromethane extract of C. ambiguus was identified as having activity in adenosine-diphosphate-induced human platelet aggregation and serotonin-release inhibition bioassays. Subsequent fractionation of this extract led to the isolation of four phenylpropenoids, eugenol, elemicin, eugenol methylether and trans-isoelemicin. While both eugenol and elemicin exhibited dose-dependent inhibition of ADP-induced human platelet serotonin release, only eugenol displayed potent inhibitory activity with an IC50 value of 46.6 μM, in comparison to aspirin, with an IC50 value of 46.1 μM. These findings provide evidence to support the therapeutic efficacy of C. ambiguus in the non-conventional treatment of headache and inflammatory conditions.
Collapse
Affiliation(s)
- I Darren Grice
- Institute for Glycomics, Gold Coast campus, Griffith University, Queensland, 4222, Australia
| | - Kelly L Rogers
- Plate-forme d'imagerie dynamique, Institut Pasteur, Paris Cedex 15, France; Genomics Research Centre, Gold Coast campus, Griffith University, Queensland, 4222, Australia
| | - Lyn R Griffiths
- Genomics Research Centre, Gold Coast campus, Griffith University, Queensland, 4222, Australia
| |
Collapse
|
35
|
Webb SE, Rogers KL, Karplus E, Miller AL. The use of aequorins to record and visualize Ca(2+) dynamics: from subcellular microdomains to whole organisms. Methods Cell Biol 2010; 99:263-300. [PMID: 21035690 DOI: 10.1016/b978-0-12-374841-6.00010-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this chapter, we describe the practical aspects of measuring [Ca(2+)] transients that are generated in a particular cytoplasmic domain, or within a specific organelle or its periorganellar environment, using bioluminescent, genetically encoded and targeted Ca(2+) reporters, especially those based on apoaequorin. We also list examples of the organisms, tissues, and cells that have been transfected with apoaequorin or an apoaequorin-BRET complex, as well as of the organelles and subcellular domains that have been specifically targeted with these bioluminescent Ca(2+) reporters. In addition, we summarize the various techniques used to load the apoaequorin cofactor, coelenterazine, and its analogs into cells, tissues, and intact organisms, and we describe recent advances in the detection and imaging technologies that are currently being used to measure and visualize the luminescence generated by the aequorin-Ca(2+) reaction within these various cytoplasmic domains and subcellular compartments.
Collapse
Affiliation(s)
- Sarah E Webb
- Biochemistry and Cell Biology Section and State Key Laboratory of Molecular Neuroscience, Division of Life Science, HKUST, Clear Water Bay, Kowloon, Hong Kong, PR China
| | | | | | | |
Collapse
|
36
|
Roncali E, Savinaud M, Levrey O, Rogers KL, Maitrejean S, Tavitian B. New device for real-time bioluminescence imaging in moving rodents. J Biomed Opt 2008; 13:054035. [PMID: 19021415 DOI: 10.1117/1.2976426] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bioluminescence imaging (BLI) allows detection of biological functions in genetically modified cells, bacteria, or animals expressing a luciferase (i.e., firefly, Renilla, or aequorin). Given the high sensitivity and minimal toxicity of BLI, in vivo studies on molecular events can be performed noninvasively in living rodents. To date, detection of bioluminescence in living animals has required long exposure times that are incompatible with studies on dynamic signaling pathways or nonanaesthetised freely moving animals. Here we develop an imaging system that allows: 1. bioluminescence to be recorded at a rate of 25 images/s using a third generation intensified charge-coupled device (CCD) camera running in a photon counting mode, and 2. coregistration of a video image from a second CCD camera under infrared lighting. The sensitivity of this instrument permits studies with subsecond temporal resolution in nonanaesthetized and unrestrained mice expressing firefly luciferase and imaging of calcium signaling in transgenic mice expressing green fluorescent protein (GFP) aequorin. This imaging system enables studies on signal transduction, tumor growth, gene expression, or infectious processes in nonanaesthetized and freely moving animals.
Collapse
Affiliation(s)
- Emilie Roncali
- Laboratoire d'Imagerie Moléculaire Expérimentale, SHFJ, I2BM, CEA, Inserm U 803 4 place Leclerc, 91400 Orsay, France
| | | | | | | | | | | |
Collapse
|
37
|
Rogers KL, Martin JR, Renaud O, Karplus E, Nicola MA, Nguyen M, Picaud S, Shorte SL, Brûlet P. Electron-multiplying charge-coupled detector-based bioluminescence recording of single-cell Ca2+. J Biomed Opt 2008; 13:031211. [PMID: 18601535 DOI: 10.1117/1.2937236] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The construction and application of genetically encoded intracellular calcium concentration ([Ca2+]i) indicators has a checkered history. Excitement raised over the creation of new probes is often followed by disappointment when it is found that the initial demonstrations of [Ca2+]i sensing capability cannot be leveraged into real scientific advances. Recombinant apo-aequorin cloned from Aequorea victoria was the first Ca2+ sensitive protein genetically targeted to subcellular compartments. In the jellyfish, bioluminescence resonance energy transfer (BRET) between Ca2+ bound aequorin and green fluorescent protein (GFP) emits green light. Similarly, Ca2+ sensitive bioluminescent reporters undergoing BRET have been constructed between aequorin and GFP, and more recently with other fluorescent protein variants. These hybrid proteins display red-shifted spectrums and have higher light intensities and stability compared to aequorin alone. We report BRET measurement of single-cell [Ca2+]i based on the use of electron-multiplying charge-coupled-detector (EMCCD) imaging camera technology, mounted on either a bioluminescence or conventional microscope. Our results show for the first time how these new technologies make facile long-term monitoring of [Ca2+]i at the single-cell level, obviating the need for expensive, fragile, and sophisticated equipment based on image-photon-detectors (IPD) that were until now the only technical recourse to dynamic BRET experiments of this type.
Collapse
Affiliation(s)
- Kelly L Rogers
- Plate-forme d'Imagerie Dynamique, Imagopole,Institut Pasteur, Paris, France.
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Rogers KL, Picaud S, Roncali E, Boisgard R, Colasante C, Stinnakre J, Tavitian B, Brûlet P. Non-invasive in vivo imaging of calcium signaling in mice. PLoS One 2007; 2:e974. [PMID: 17912353 PMCID: PMC1991622 DOI: 10.1371/journal.pone.0000974] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Accepted: 09/05/2007] [Indexed: 11/19/2022] Open
Abstract
Rapid and transient elevations of Ca(2+) within cellular microdomains play a critical role in the regulation of many signal transduction pathways. Described here is a genetic approach for non-invasive detection of localized Ca(2+) concentration ([Ca(2+)]) rises in live animals using bioluminescence imaging (BLI). Transgenic mice conditionally expressing the Ca(2+)-sensitive bioluminescent reporter GFP-aequorin targeted to the mitochondrial matrix were studied in several experimental paradigms. Rapid [Ca(2+)] rises inside the mitochondrial matrix could be readily detected during single-twitch muscle contractions. Whole body patterns of [Ca(2+)] were monitored in freely moving mice and during epileptic seizures. Furthermore, variations in mitochondrial [Ca(2+)] correlated to behavioral components of the sleep/wake cycle were observed during prolonged whole body recordings of newborn mice. This non-invasive imaging technique opens new avenues for the analysis of Ca(2+) signaling whenever whole body information in freely moving animals is desired, in particular during behavioral and developmental studies.
Collapse
Affiliation(s)
- Kelly L. Rogers
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
- CEA, Service Hospitalier Frédéric Joliot, Inserm, U 803, Imagerie de l'expression des gènes, Orsay, France
| | - Sandrine Picaud
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Emilie Roncali
- CEA, Service Hospitalier Frédéric Joliot, Inserm, U 803, Imagerie de l'expression des gènes, Orsay, France
| | - Raphaël Boisgard
- CEA, Service Hospitalier Frédéric Joliot, Inserm, U 803, Imagerie de l'expression des gènes, Orsay, France
| | - Cesare Colasante
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Jacques Stinnakre
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Bertrand Tavitian
- CEA, Service Hospitalier Frédéric Joliot, Inserm, U 803, Imagerie de l'expression des gènes, Orsay, France
| | - Philippe Brûlet
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
- * To whom correspondence should be addressed. E-mail:
| |
Collapse
|
39
|
Abstract
Many different cells' signalling pathways are universally regulated by Ca2+ concentration [Ca2+] rises that have highly variable amplitudes and kinetic properties. Optical imaging can provide the means to characterise both the temporal and spatial aspects of Ca2+ signals involved in neurophysiological functions. New methods for in vivo imaging of Ca2+ signalling in the brain of Drosophila are required for probing the different dynamic aspects of this system. In studies here, whole brain Ca2+ imaging was performed on transgenic flies with targeted expression of the bioluminescent Ca2+ reporter GFP-aequorin (GA) in different neural structures. A photon counting based technique was used to undertake continuous recordings of cytosolic [Ca2+] over hours. Time integrals for reconstructing images and analysis of the data were selected offline according to the signal intensity. This approach allowed a unique Ca2+ response associated with cholinergic transmission to be identified by whole brain imaging of specific neural structures. Notably, [Ca2+] transients in the Mushroom Bodies (MBs) following nicotine stimulation were accompanied by a delayed secondary [Ca2+] rise (up to 15 min. later) in the MB lobes. The delayed response was sensitive to thapsigargin, suggesting a role for intra-cellular Ca2+ stores. Moreover, it was reduced in dunce mutant flies, which are impaired in learning and memory. Bioluminescence imaging is therefore useful for studying Ca2+ signalling pathways and for functional mapping of neurophysiological processes in the fly brain.
Collapse
Affiliation(s)
- Jean-René Martin
- Equipe: Bases Neurales des Comportements chez la Drosophile, Laboratoire de Neurobiologie Cellulaire et Moléculaire (NBCM), Centre National de la Recherche Scientifique (CNRS), Unité UPR-9040, Gif-sur-Yvette, France
- * To whom correspondence should be addressed. E-mail: (J−RM); (PB)
| | - Kelly L. Rogers
- Unité d'Embryologie Moléculaire, Centre National de la Recherche Scientifique (CNRS), URA 2578, Institut Pasteur, Paris, France
| | - Carine Chagneau
- Neurobiologie de l'Apprentissage, de la Mémoire et de la Communication (NAMC), Centre National de la Recherche Scientifique (CNRS), UMR-8620, Université Paris-Sud, Orsay, France
| | - Philippe Brûlet
- Unité d'Embryologie Moléculaire, Centre National de la Recherche Scientifique (CNRS), URA 2578, Institut Pasteur, Paris, France
- * To whom correspondence should be addressed. E-mail: (J−RM); (PB)
| |
Collapse
|
40
|
Curie T, Rogers KL, Colasante C, Brûlet P. Red-shifted aequorin-based bioluminescent reporters for in vivo imaging of Ca2 signaling. Mol Imaging 2007; 6:30-42. [PMID: 17311763] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Abstract
Real-time visualization of calcium (Ca(2+)) dynamics in the whole animal will enable important advances in understanding the complexities of cellular function. The genetically encoded bioluminescent Ca(2+) reporter green fluorescent protein-aequorin (GA) allows noninvasive detection of intracellular Ca(2+) signaling in freely moving mice. However, the emission spectrum of GA is not optimal for detection of activity from deep tissues in the whole animal. To overcome this limitation, two new reporter genes were constructed by fusing the yellow fluorescent protein (Venus) and the monomeric red fluorescent protein (mRFP1) to aequorin. Transfer of aequorin chemiluminescence energy to Venus (VA) is highly efficient and produces a 58 nm red shift in the peak emission spectrum of aequorin. This substantially improves photon transmission through tissue, such as the skin and thoracic cage. Although the Ca(2+)-induced bioluminescence spectrum of mRFP1-aequorin (RA) is similar to that of aequorin, there is also a small peak above 600 nm corresponding to the peak emission of mRFP1. Small amounts of energy transfer between aequorin and mRFP1 yield an emission spectrum with the highest percentage of total light above 600 nm compared with GA and VA. Accordingly, RA is also detected with higher sensitivity from brain areas. VA and RA will therefore improve optical access to Ca(2+) signaling events in deeper tissues, such as the heart and brain, and offer insight for engineering new hybrid molecules.
Collapse
Affiliation(s)
- Thomas Curie
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | | | | | | |
Collapse
|
41
|
Affiliation(s)
- Thomas Curie
- From the Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Kelly L. Rogers
- From the Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Cesare Colasante
- From the Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| | - Philippe BrûClet
- From the Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, Paris, France
| |
Collapse
|
42
|
Rogers KL, Stinnakre J, Agulhon C, Jublot D, Shorte SL, Kremer EJ, Brûlet P. Visualization of local Ca2+ dynamics with genetically encoded bioluminescent reporters. Eur J Neurosci 2005; 21:597-610. [PMID: 15733079 DOI: 10.1111/j.1460-9568.2005.03871.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Measurements of local Ca2+ signalling at different developmental stages and/or in specific cell types is important for understanding aspects of brain functioning. The use of light excitation in fluorescence imaging can cause phototoxicity, photobleaching and auto-fluorescence. In contrast, bioluminescence does not require the input of radiative energy and can therefore be measured over long periods, with very high temporal resolution. Aequorin is a genetically encoded Ca(2+)-sensitive bioluminescent protein, however, its low quantum yield prevents dynamic measurements of Ca2+ responses in single cells. To overcome this limitation, we recently reported the bi-functional Ca2+ reporter gene, GFP-aequorin (GA), which was developed specifically to improve the light output and stability of aequorin chimeras [V. Baubet, et al., (2000) PNAS, 97, 7260-7265]. In the current study, we have genetically targeted GA to different microdomains important in synaptic transmission, including to the mitochondrial matrix, endoplasmic reticulum, synaptic vesicles and to the postsynaptic density. We demonstrate that these reporters enable 'real-time' measurements of subcellular Ca2+ changes in single mammalian neurons using bioluminescence. The high signal-to-noise ratio of these reporters is also important in that it affords the visualization of Ca2+ dynamics in cell-cell communication in neuronal cultures and tissue slices. Further, we demonstrate the utility of this approach in ex-vivo preparations of mammalian retina, a paradigm in which external light input should be controlled. This represents a novel molecular imaging approach for non-invasive monitoring of local Ca2+ dynamics and cellular communication in tissue or whole animal studies.
Collapse
Affiliation(s)
- Kelly L Rogers
- Unité d'Embryologie Moléculaire, CNRS URA 2578, Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15, France
| | | | | | | | | | | | | |
Collapse
|
43
|
Abstract
Conventional anticoagulant therapy has been based on indirect inhibition of coagulation factors with heparin and warfarin. These agents display liabilities prompting the development of new anticoagulants over the last two decades. The first to be developed was a series of low molecular weight heparins(LMWHs). Their favourable pharmacokinetic profiles and risk/benefit ratios led to widespread use in Europe and, more recently, approval for their use in the USA. Paralleling the development of LMWHs has been the pursuit of a different strategy focused on direct rather than indirect inhibition of enzymes in the coagulation cascade. In contrast to heparin, LMWHs, or other glycosaminoglycans, direct inhibitors exert their effects independent of either antithrombin III (ATIII) or heparin cofactor II (HCII) and more effectively inhibit clot-bound thrombin or FXa. Highly potent, selective (versus other serine proteases)direct thrombin and FXa inhibitors have been identified and isolated from natural sources, such as leeches, ticks and hookworms. The recombinant forms and analogues of the senatural proteins have been produced using molecular biology techniques, i.e., rHirudin, Hirulogs, recombinant tick anticoagulant peptide (rTAP), recombinant antistasin (rATS) and recombinant nematode anticoagulant peptide-5 (rNAP-5). The design of novel structures or the modification of existing chemicals has led to the synthesis of many non-peptide, low molecular weight inhibitors of thrombin and FXa. Some of them are orally active and may be suitable for long-term clinical use. In addition, considerable progress has been made in developing specific TF/VIIa complex inhibitors. The anticoagulation properties of the new agents are being characterised in experimental studies. Some of them have been advanced to large scale clinical trials and their effectiveness, and sometimes relative ineffectiveness,in arterial and venous thromboembolic disorders has been demonstrated. They are being tested for their potential as new antithrombotic agents that act via direct enzyme inhibition. Thus,the clinician should in future be able to target different thrombotic conditions with proven, specific anticoagulant interventions.
Collapse
Affiliation(s)
- L Chi
- Vascular and Cardiac Diseases and Drug Development, Parke-Davis Pharmaceutical Research Division, Warner-Lambert Company, 2800 Plymouth Road, Ann Arbor, Michigan 48105, USA
| | | | | | | |
Collapse
|
44
|
Abstract
Migraine is a common complex disorder that affects a large portion of the population and thus incurs a substantial economic burden on society. The disorder is characterized by recurrent headaches that are unilateral and usually accompanied by nausea, vomiting, photophobia, and phonophobia. The range of clinical characteristics is broad and there is evidence of comorbidity with other neurological diseases, complicating both the diagnosis and management of the disorder. Although the class of drugs known as the triptans (serotonin 5-HT(1B/1D) agonists) has been shown to be effective in treating a significant number of patients with migraine, treatment may in the future be further enhanced by identifying drugs that selectively target molecular mechanisms causing susceptibility to the disease.Genetically, migraine is a complex familial disorder in which the severity and susceptibility of individuals is most likely governed by several genes that may be different among families. Identification of the genomic variants involved in genetic predisposition to migraine should facilitate the development of more effective diagnostic and therapeutic applications. Genetic profiling, combined with our knowledge of therapeutic response to drugs, should enable the development of specific, individually-tailored treatment.
Collapse
Affiliation(s)
- Kelly L Rogers
- Genomics Research Centre, Griffith University Gold Coast, Gold Coast Mail Centre, Southport, Queensland 9726, Australia
| | | | | |
Collapse
|
45
|
Abstract
Structurally novel compounds able to block voltage-gated Ca2+ channels (VGCCs) are currently being sought for the development of new drugs directed at neurological disorders. Fluorescence techniques have recently been developed to facilitate the analysis of VGCC blockers in a multi-well format. By utilising the small cell lung carcinoma cell line, NCI-H146, we were able to detect changes in intracellular Ca2+ concentration ([Ca2+](i)) using a fluorescence microplate reader. NCI-H146 cells have characteristics resembling those of neuronal cells and express multiple VGCC subtypes, including those of the L-, N- and P-type. We found that K+-depolarisation of fluo-3 loaded NCI-H146 cells causes a rapid and transient increase in fluorescence, which was readily detected in a 96-well plate. Extracts of Australian plants, including those used traditionally as headache or pain treatments, were tested in this study to identify those affecting Ca2+ influx following membrane depolarisation of NCI-H146 cells. We found that E. bignoniiflora, A. symphyocarpa and E. vespertilio caused dose-dependent inhibition of K+-depolarised Ca2+ influx, with IC(50) values calculated to be 234, 548 and 209 microg/ml, respectively. This data suggests an effect of these extracts on the function of VGCCs in these cells. Furthermore, we found similar effects using a fluorescence laser imaging plate reader (FLIPR) that allows simultaneous measurement of real-time fluorescence in a multi-well plate. Our results indicate that the dichloromethane extract of E. bignoniiflora and the methanolic extract of E. vespertilio show considerable promise as antagonists of neuronal VGCCs. Further analysis is required to characterise the function of the bioactive constituents in these extracts and determine their selectivity on VGCC subtypes.
Collapse
Affiliation(s)
- K L Rogers
- Genomics Research Centre, School of Health Science, Griffith University, PMB 50, GCMC, Gold Coast, 4217 Qld, Australia
| | | | | | | |
Collapse
|
46
|
Abstract
PURPOSE To evaluate the interchangeability of various commercially available iodine 125 ((125)I) sources and to assess the dosimetric effect of a change in source. MATERIALS AND METHODS A modified peripherally loading prostate brachytherapy plan to deliver 145 Gy was devised by using a model (125)I source, which until recently was the only available (125)I source. A dose-volume histogram was generated. By using the available radial dose functions and anisotropy distributions for eight other currently commercially available sources, the same implant placement was planned and dose-volume histogram distributions tabulated. This exercise was performed for 15-, 45-, and 60-cm(3) glands. No implants were placed, and no physical radiation measurements were made. Dose calculations were theoretic: They were generated by using a widely available treatment planning system. RESULTS There was little difference in dose distribution to the volume receiving 100% of the prescribed dose (<6%); only one source showed a difference greater than 2%. Large differences, up to -40% to +60%, were seen in the volume of tissue encompassed within internal high-dose regions receiving 150% or 200% of the prescribed dose. These findings held true, irrespective of gland size, within a clinically relevant range (15-60 cm(3)) and for a uniformly loaded radionuclide distribution. CONCLUSION Reviewing only peripheral dose at or near the prescription dose of 145 Gy revealed little difference in doses for various source designs. Marked differences in high-dose regions were seen and may affect the dose received by internal sites. Effects of these changes on cure and/or complications remain speculative.
Collapse
Affiliation(s)
- D C Beyer
- Arizona Oncology Services, 8994 E Desert Cove Ave, Suite 100, Scottsdale, AZ 85260, USA.
| | | | | | | |
Collapse
|
47
|
Abstract
Extracts of Australian plants were screened to detect constituents affecting adenosine di-phosphate (ADP) induced platelet aggregation and [14C]5-hydroxytryptamine (5-HT) release. Extracts of four tested plants including, Eremophila gilesii, Erythrina vespertilio, Cymbopogon ambiguus, and Santalum acuminatum, were found to cause significant inhibition of platelet 5-HT release. Inhibition levels ranged from 56-98%, and was not due to the non-specific effects of protein binding tannins. These extracts, and those we have previously identified as being active, were examined further to determine if they affect epinephrine (EPN), arachidonic acid (A.A) or collagen stimulated platelet aggregation and 5-HT release. Among those extracts investigated, we found that both the methanolic extract of E. vespertilio and the dichloromethane (DCM) extract of C. ambiguus were most potent and caused significant inhibition of platelet activation induced by EPN, A.A and to a lesser extent by collagen. Inhibition of ADP induced platelet 5-HT release by both of these extracts, was dose-dependent, with IC50 values for E. vespertilio and C. ambiguus estimated to be 20.4 microl (1.855 mg/ml) and 8.34 microl (0.758 mg/ml), respectively. Overall, C. ambiguus exhibited most activity and also caused dose-dependent inhibition of A.A induced platelet activation. These results indicate that inhibition may occur specifically at a site within the A.A pathway, and suggest the presence of a cyclo-oxygenase inhibitor. Both E. vespertilio and C. ambiguus are reported to be traditional headache treatments, with the present study providing evidence that they affect 5-HT release.
Collapse
Affiliation(s)
- K L Rogers
- Genomics Research Centre and School of Health Science, Griffith University, Gold Coast, Queensland, Australia
| | | | | |
Collapse
|
48
|
Chi L, Mertz TE, Rogers KL, Janiczek N, Peng YW, Saganek L, Bousley RF, Juneau PL, Uprichard AC, Gallagher KP. Antithrombotic effect of LB-30057 (CI-1028), a new synthetic thrombin inhibitor, in a rabbit model of thrombosis: comparison with inogatran. J Thromb Thrombolysis 2001; 11:19-31. [PMID: 11248787 DOI: 10.1023/a:1008900109285] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
LB-30057 (CI-1028) is a novel, orally bioavailable, direct thrombin inhibitor with a Ki of 0.38 nM against human thrombin. The effects of LB-30057 on thrombus formation and hemostasis were evaluated in a veno-venous shunt model of thrombosis in rabbits, and compared with inogatran, another direct inhibitor of thrombin. Each compound was studied at 5 or 6 different doses with 5 or 6 rabbits in each group. After administration as a bolus i.v. injection followed by continuous infusion, both LB-30057 and inogatran dose-dependently inhibited thrombus formation, which was measured as an increase in time to occlusion (TTO) and a decrease in thrombus weight. Both compounds also improved vena caval blood flow and reduced the overall incidence of thrombotic occlusion. LB-30057 significantly prolonged TTO from 23 +/- 4 min (before dose) to 110 +/- 10 min at the highest dose (0.7 mg/kg + 47 microg/kg/min) (p < 0.001), and reduced thrombus weight from 57 +/- 2 mg to 15 +/- 5 mg (p < 0.001). Occlusive thrombus formed in only one of six rabbits that received the highest dose of LB-30057 (vs. 13/13 in the control group, p < 0.01). At the dose that produced the maximum antithrombotic effect (0.7 mg/kg + 47 microg/kg/min), LB-30057 increased aPTT and bleeding time approximately 2-and 2.5-fold above baseline, respectively. On a gravimetric basis, LB-30057 and inogatran displayed comparable in vivo antithrombotic efficacy. When compared to equally effective anti thrombotic doses of inogatran, LB-30057 caused less prolongation in aPTT, had no effect on PT, and tended to have less of effect on bleeding time. These results indicate that LB-30057 is an effective antithrombotic compound and it appears to have a better benefit/risk profile than inogatran in this experimental model.
Collapse
Affiliation(s)
- L Chi
- Cardiovascular Therapeutics Section, Parke-Davis Pharmaceutical Research Division, Warner Lambert Company, Ann Arbor, Michigan 48105, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Rogers KL, Grice ID, Griffiths LR. Inhibition of platelet aggregation and 5-HT release by extracts of Australian plants used traditionally as headache treatments. Eur J Pharm Sci 2000; 9:355-63. [PMID: 10664475 DOI: 10.1016/s0928-0987(99)00074-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To identify potential migraine therapeutics, extracts of eighteen plants were screened to detect plant constituents affecting ADP induced platelet aggregation and [14C]5-hydroxytryptamine (5-HT) release. Extracts of the seven plants exhibiting significant inhibition of platelet function were reanalysed in the presence of polyvinyl pyrrolidone (PVP) to remove polyphenolic tannins that precipitate proteins. Two of these extracts no longer exhibited inhibition of platelet activity after removal of tannins. However, extracts of Crataegus monogyna, Ipomoea pes-caprae, Eremophila freelingii, Eremophila longifolia, and Asteromyrtus symphyocarpa still potently inhibited ADP induced human platelet [14C]5-HT release in vitro, with levels ranging from 62 to 95% inhibition. I. pes-caprae, and C. monogyna also caused significant inhibition of ADP induced platelet aggregation. All of these plants have been previously used as traditional headache treatments, except for C. monogyna which is used primarily for protective effects on the cardiovascular system. Further studies elucidating the compounds that are responsible for these anti-platelet effects are needed to determine their exact mechanism of action.
Collapse
Affiliation(s)
- K L Rogers
- Genomics Research Centre and School of Health Science, Griffith University, PMB 50, GCMC, Gold Coast, Australia
| | | | | |
Collapse
|
50
|
Abstract
The objective of this study was to evaluate the effects of DX-9065a, a nonpeptide, direct inhibitor of factor Xa (FXa), in a novel experimental model of venous thrombosis. The experiments were conducted on anesthetized rabbits in which a veno-venous shunt with cotton threads was inserted into the vena cava. DX-9065a was administered intravenously to the rabbits as an initial bolus followed by a maintenance infusion using the following dosing schedules: DX-I: 0.25 mg/kg + 3 micrograms/kg/min.; DX-II: 0.75 mg/kg + 9 micrograms/kg/min.; DX-III: 1.5 mg/kg + 18 micrograms/kg/min.; DX-IV: 3.0 mg/kg + 36 micrograms/kg/min.; DX-V: 6.0 mg/kg + 72 micrograms/kg/min. DX-9065a induced a dose-dependent increase in the time to occlusion and a dose-dependent decrease in thrombus weight. Because of the unique character of the model, we were also able to show a dose-dependent increase in blood flow through the shunt. In addition, there were dose-dependent increases in prothrombin time (PT) and activated coagulation time (ACT) with more variable responses in the activated partial thromboplastin time (APTT). DX-9065a had little effect on thrombin time (TT) or bleeding time at all doses tested. In conclusion, dose-dependent antithrombotic efficacy was documented with DX-9065a in this new model of venous thrombosis. Although the in vivo potency of the compound was not striking, the results support the utility of FXa inhibition in venous thrombosis and demonstrate the utility of this experimental model for evaluating the efficacy of novel anticoagulants.
Collapse
Affiliation(s)
- K L Rogers
- Department of Pharmacokinetics, Dynamics & Metabolism, Parke-Davis Pharmaceutical Research Division, Warner-Lambert Company, Ann Arbor, MI 48105, USA.
| | | | | | | | | |
Collapse
|