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Williams GM, Ginzel MD, Ma Z, Adams DC, Campbell F, Lovett GM, Pildain MB, Raffa KF, Gandhi KJK, Santini A, Sniezko RA, Wingfield MJ, Bonello P. The Global Forest Health Crisis: A Public-Good Social Dilemma in Need of International Collective Action. Annu Rev Phytopathol 2023; 61:377-401. [PMID: 37253697 DOI: 10.1146/annurev-phyto-021722-024626] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Society is confronted by interconnected threats to ecological sustainability. Among these is the devastation of forests by destructive non-native pathogens and insects introduced through global trade, leading to the loss of critical ecosystem services and a global forest health crisis. We argue that the forest health crisis is a public-good social dilemma and propose a response framework that incorporates principles of collective action. This framework enables scientists to better engage policymakers and empowers the public to advocate for proactive biosecurity and forest health management. Collective action in forest health features broadly inclusive stakeholder engagement to build trust and set goals; accountability for destructive pest introductions; pooled support for weakest-link partners; and inclusion of intrinsic and nonmarket values of forest ecosystems in risk assessment. We provide short-term and longer-term measures that incorporate the above principles to shift the societal and ecological forest health paradigm to a more resilient state.
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Affiliation(s)
- Geoffrey M Williams
- International Programs, US Forest Service, US Department of Agriculture, Lansing, Michigan, USA;
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, Indiana, USA
| | - Matthew D Ginzel
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, Indiana, USA
- Department of Entomology, Purdue University, West Lafayette, Indiana, USA
| | - Zhao Ma
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, Indiana, USA
| | - Damian C Adams
- Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida, USA
| | - Faith Campbell
- Center for Invasive Species Prevention, Bethesda, Maryland, USA
| | - Gary M Lovett
- Cary Institute of Ecosystem Studies, Millbrook, New York, USA
| | - María Belén Pildain
- Centro de Investigación y Extensión Forestal Andino Patagónico, Consejo Nacional de Investigaciones Científicas y Técnicas, Esquel, Chubut, Argentina
| | - Kenneth F Raffa
- Department of Entomology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kamal J K Gandhi
- D. B. Warnell School of Forestry and Natural Resources, University of Georgia, Athens, Georgia, USA
| | - Alberto Santini
- Institute for Sustainable Plant Protection, National Research Council, Sesto Fiorentino, Italy
| | - Richard A Sniezko
- Dorena Genetic Resource Center, US Forest Service, US Department of Agriculture, Cottage Grove, Oregon, USA
| | - Michael J Wingfield
- Forestry and Agricultural Biotechnology Institute, University of Pretoria, Hatfield, Pretoria, South Africa
| | - Pierluigi Bonello
- Department of Plant Pathology, The Ohio State University, Columbus, Ohio, USA;
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Dasyam N, Sharples KJ, Barrow C, Huang Y, Bauer E, Mester B, Wood CE, Authier-Hall A, Dzhelali M, Ostapowicz T, Kumar R, Lowe J, Maxwell A, Burn OK, Williams GM, Carley SE, Caygill G, Jones J, Chan STS, Hinder VA, Macapagal J, McCusker M, Weinkove R, Brimble MA, Painter GF, Findlay MP, Dunbar PR, Gasser O, Hermans IF. A randomised controlled trial of long NY-ESO-1 peptide-pulsed autologous dendritic cells with or without alpha-galactosylceramide in high-risk melanoma. Cancer Immunol Immunother 2023:10.1007/s00262-023-03400-y. [PMID: 36881133 DOI: 10.1007/s00262-023-03400-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 02/06/2023] [Indexed: 03/08/2023]
Abstract
AIM We have previously reported that polyfunctional T cell responses can be induced to the cancer testis antigen NY-ESO-1 in melanoma patients injected with mature autologous monocyte-derived dendritic cells (DCs) loaded with long NY-ESO-1-derived peptides together with α-galactosylceramide (α-GalCer), an agonist for type 1 Natural Killer T (NKT) cells. OBJECTIVE To assess whether inclusion of α-GalCer in autologous NY-ESO-1 long peptide-pulsed DC vaccines (DCV + α-GalCer) improves T cell responses when compared to peptide-pulsed DC vaccines without α-GalCer (DCV). DESIGN, SETTING AND PARTICIPANTS Single-centre blinded randomised controlled trial in patients ≥ 18 years old with histologically confirmed, fully resected stage II-IV malignant cutaneous melanoma, conducted between July 2015 and June 2018 at the Wellington Blood and Cancer Centre of the Capital and Coast District Health Board. INTERVENTIONS Stage I. Patients were randomised to two cycles of DCV or DCV + α-GalCer (intravenous dose of 10 × 106 cells, interval of 28 days). Stage II. Patients assigned to DCV + α-GalCer were randomised to two further cycles of DCV + α-GalCer or observation, while patients initially assigned to DCV crossed over to two cycles of DCV + α-GalCer. OUTCOME MEASURES Primary: Area under the curve (AUC) of mean NY-ESO-1-specific T cell count detected by ex vivo IFN-γ ELISpot in pre- and post-treatment blood samples, compared between treatment arms at Stage I. Secondary: Proportion of responders in each arm at Stage I; NKT cell count in each arm at Stage I; serum cytokine levels at Stage I; adverse events Stage I; T cell count for DCV + α-GalCer versus observation at Stage II, T cell count before versus after cross-over. RESULTS Thirty-eight patients gave written informed consent; 5 were excluded before randomisation due to progressive disease or incomplete leukapheresis, 17 were assigned to DCV, and 16 to DCV + α-GalCer. The vaccines were well tolerated and associated with increases in mean total T cell count, predominantly CD4+ T cells, but the difference between the treatment arms was not statistically significant (difference - 6.85, 95% confidence interval, - 21.65 to 7.92; P = 0.36). No significant improvements in T cell response were associated with DCV + α-GalCer with increased dosing, or in the cross-over. However, the NKT cell response to α-GalCer-loaded vaccines was limited compared to previous studies, with mean circulating NKT cell levels not significantly increased in the DCV + α-GalCer arm and no significant differences in cytokine response between the treatment arms. CONCLUSIONS A high population coverage of NY-ESO-1-specific T cell responses was achieved with a good safety profile, but we failed to demonstrate that loading with α-GalCer provided an additional advantage to the T cell response with this cellular vaccine design. CLINICAL TRIAL REGISTRATION ACTRN12612001101875. Funded by the Health Research Council of New Zealand.
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Affiliation(s)
- Nathaniel Dasyam
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Katrina J Sharples
- Dunedin School of Medicine, University of Otago, PO Box 56, Dunedin, 9054, New Zealand.,Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Catherine Barrow
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Ying Huang
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Evelyn Bauer
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Brigitta Mester
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Catherine E Wood
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.,Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Astrid Authier-Hall
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Marina Dzhelali
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Tess Ostapowicz
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Rajiv Kumar
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Jessica Lowe
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.,Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Alice Maxwell
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.,Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Olivia K Burn
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Geoffrey M Williams
- School of Chemical Sciences, University of Auckland, PO Box 92019, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
| | - Sarah E Carley
- School of Chemical Sciences, University of Auckland, PO Box 92019, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
| | | | - Jeremy Jones
- GlycoSyn, PO Box 31 310, Lower Hutt, 5040, New Zealand
| | - Susanna T S Chan
- The Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower Hutt, 5046, New Zealand
| | - Victoria A Hinder
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Jerome Macapagal
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Monica McCusker
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Robert Weinkove
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.,Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, PO Box 92019, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
| | - Gavin F Painter
- The Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower Hutt, 5046, New Zealand
| | - Michael P Findlay
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - P Rod Dunbar
- Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand.,School of Biological Sciences, University of Auckland, PO Box 92019, Auckland, New Zealand
| | - Olivier Gasser
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.
| | - Ian F Hermans
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand. .,Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand.
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Burn OK, Farrand K, Pritchard T, Draper S, Tang CW, Mooney AH, Schmidt AJ, Yang SH, Williams GM, Brimble MA, Kandasamy M, Marshall AJ, Clarke K, Painter GF, Hermans IF, Weinkove R. Glycolipid-peptide conjugate vaccines elicit CD8 + T-cell responses and prevent breast cancer metastasis. Clin Transl Immunology 2022; 11:e1401. [PMID: 35795321 PMCID: PMC9250805 DOI: 10.1002/cti2.1401] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 06/06/2022] [Accepted: 06/10/2022] [Indexed: 11/08/2022] Open
Abstract
Objectives Metastasis is the principal cause of breast cancer mortality. Vaccines targeting breast cancer antigens have yet to demonstrate clinical efficacy, and there remains an unmet need for safe and effective treatment to reduce the risk of metastasis, particularly for people with triple-negative breast cancer (TNBC). Certain glycolipids can act as vaccine adjuvants by specifically stimulating natural killer T (NKT) cells to provide a universal form of T-cell help. Methods We designed and made a series of conjugate vaccines comprising a prodrug of the NKT cell-activating glycolipid α-galactosylceramide covalently linked to tumor-expressed peptides, and assessed these using E0771- and 4T1-based breast cancer models in vivo. We employed peptides from the model antigen ovalbumin and from clinically relevant breast cancer antigens HER2 and NY-ESO-1. Results Glycolipid-peptide conjugate vaccines that activate NKT cells led to antigen-presenting cell activation, induced inflammatory cytokines, and, compared with peptide alone or admixed peptide and α-galactosylceramide, specifically enhanced CD8+ T-cell responses against tumor-associated peptides. Primary tumor growth was delayed by vaccination in all tumor models. Using 4T1-based cell lines expressing HER2 or NY-ESO-1, a single administration of the relevant conjugate vaccine prevented tumor colonisation of the lung following intravenous inoculation of tumor cells or spontaneous metastasis from breast, respectively. Conclusion Glycolipid-peptide conjugate vaccines that activate NKT cells prevent lung metastasis in breast cancer models and warrant investigation as adjuvant therapies for high-risk breast cancer.
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Affiliation(s)
- Olivia K Burn
- Malaghan Institute of Medical Research Wellington New Zealand.,Department of Pathology & Molecular Medicine University of Otago Wellington Wellington New Zealand
| | - Kathryn Farrand
- Malaghan Institute of Medical Research Wellington New Zealand
| | - Tara Pritchard
- Malaghan Institute of Medical Research Wellington New Zealand
| | - Sarah Draper
- Ferrier Research Institute Victoria University of Wellington Wellington New Zealand
| | - Ching-Wen Tang
- Malaghan Institute of Medical Research Wellington New Zealand
| | - Anna H Mooney
- Malaghan Institute of Medical Research Wellington New Zealand
| | | | - Sung H Yang
- School of Chemical Sciences University of Auckland Auckland New Zealand
| | | | - Margaret A Brimble
- School of Chemical Sciences University of Auckland Auckland New Zealand.,School of Biological Sciences University of Auckland Auckland New Zealand.,Maurice Wilkins Centre Auckland New Zealand
| | - Matheswaran Kandasamy
- Medical Research Council Human Immunology Unit, Weatherall Institute of Molecular Medicine University of Oxford Oxford UK
| | - Andrew J Marshall
- Ferrier Research Institute Victoria University of Wellington Wellington New Zealand
| | - Kate Clarke
- Wellington Blood & Cancer Centre Capital & Coast District Health Board Wellington New Zealand
| | - Gavin F Painter
- Ferrier Research Institute Victoria University of Wellington Wellington New Zealand.,Maurice Wilkins Centre Auckland New Zealand
| | - Ian F Hermans
- Malaghan Institute of Medical Research Wellington New Zealand.,Maurice Wilkins Centre Auckland New Zealand
| | - Robert Weinkove
- Malaghan Institute of Medical Research Wellington New Zealand.,Department of Pathology & Molecular Medicine University of Otago Wellington Wellington New Zealand.,Wellington Blood & Cancer Centre Capital & Coast District Health Board Wellington New Zealand
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4
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Lee KL, Aitken JF, Li X, Montgomery K, Hsu HL, Williams GM, Brimble MA, Cooper GJ. Vesiculin derived from IGF-II drives increased islet cell mass in a mouse model of pre-diabetes. Islets 2022; 14:14-22. [PMID: 34632959 PMCID: PMC8632304 DOI: 10.1080/19382014.2021.1982326] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Pancreatic islet-cell function and volume are both key determinants of the maintenance of metabolic health. Insulin resistance and islet-cell dysfunction often occur in the earlier stages of type 2 diabetes (T2D) progression. The ability of the islet cells to respond to insulin resistance by increasing hormone output accompanied by increased islet-cell volume is key to maintaining blood glucose control and preventing further disease progression. Eventual β-cell loss is the main driver of full-blown T2D and insulin-dependency. Researchers are targeting T2D with approaches that include those aimed at enhancing the function of the patient's existing β-cell population, or replacing islet β-cells. Another approach is to look for agents that enhance the natural capacity of the β-cell population to expand. Here we aimed to study the effects of a new putative β-cell growth factor on a mouse model of pre-diabetes. We asked whether: 1) 4-week's treatment with vesiculin, a two-chain peptide derived by processing from IGF-II, had any measurable effect on pre-diabetic mice vs vehicle; and 2) whether the effects were the same in non-diabetic littermate controls. Although treatment with vesiculin did not alter blood glucose levels over this time period, there was a doubling of the Proliferating Cell Nuclear Antigen (PCNA) detectable in the islets of treated pre-diabetic but not control mice and this was accompanied by increased insulin- and glucagon-positive stained areas in the pancreatic islets.
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Affiliation(s)
- Kate L. Lee
- School of Biological Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
- Faculty of Medical and Health Sciences, School of Medical Sciences, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- CONTACT Kate L. Lee Faculty of Medical and Health Sciences; Maurice Wilkins Centre for Molecular BioDiscovery, Auckland, New Zealand
| | - Jacqueline F. Aitken
- School of Biological Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
| | - Xun Li
- School of Biological Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
| | - Kirsten Montgomery
- School of Biological Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
| | - Huai-L. Hsu
- Faculty of Medical and Health Sciences, School of Medical Sciences, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Geoffrey M. Williams
- School of Chemical Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
- Centre for Advanced Discovery and Experimental Therapeutics, Manchester Biomedical Research Centre, Central Manchester University Hospitals Nhs Foundation Trust, and the School of Biomedicine, the Medical School, University of Manchester, Manchester, UK
| | - Margaret A. Brimble
- School of Chemical Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
- Centre for Advanced Discovery and Experimental Therapeutics, Manchester Biomedical Research Centre, Central Manchester University Hospitals Nhs Foundation Trust, and the School of Biomedicine, the Medical School, University of Manchester, Manchester, UK
| | - Garth J.S. Cooper
- School of Biological Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
- School of Chemical Sciences, Faculty of Science, University of Auckland, Auckland, New Zealand
- Centre for Advanced Discovery and Experimental Therapeutics, Manchester Biomedical Research Centre, Central Manchester University Hospitals Nhs Foundation Trust, and the School of Biomedicine, the Medical School, University of Manchester, Manchester, UK
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Lu BL, Li FF, Kelch ID, Williams GM, Dunbar PR, Brimble MA. Investigating the Individual Importance of the Pam
2
Cys Ester Motifs on TLR2 Activity. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101055] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Benjamin L. Lu
- School of Chemical Sciences The University of Auckland 23 Symonds St. 1010 Auckland New Zealand
- School of Biological Sciences The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
| | - Freda F. Li
- School of Chemical Sciences The University of Auckland 23 Symonds St. 1010 Auckland New Zealand
| | - Inken D. Kelch
- School of Biological Sciences The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
| | - Geoffrey M. Williams
- School of Chemical Sciences The University of Auckland 23 Symonds St. 1010 Auckland New Zealand
- School of Biological Sciences The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
| | - P. Rod Dunbar
- School of Biological Sciences The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences The University of Auckland 23 Symonds St. 1010 Auckland New Zealand
- School of Biological Sciences The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery The University of Auckland 3 A Symonds St. 1010 Auckland New Zealand
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Garelja M, Au M, Brimble MA, Gingell JJ, Hendrikse ER, Lovell A, Prodan N, Sexton PM, Siow A, Walker CS, Watkins HA, Williams GM, Wootten D, Yang SH, Harris PWR, Hay DL. Molecular Mechanisms of Class B GPCR Activation: Insights from Adrenomedullin Receptors. ACS Pharmacol Transl Sci 2020; 3:246-262. [PMID: 32296766 PMCID: PMC7155197 DOI: 10.1021/acsptsci.9b00083] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Indexed: 02/07/2023]
Abstract
Adrenomedullin (AM) is a 52 amino acid peptide that plays a regulatory role in the vasculature. Receptors for AM comprise the class B G protein-coupled receptor, the calcitonin-like receptor (CLR), in complex with one of three receptor activity-modifying proteins (RAMPs). The C-terminus of AM is involved in binding to the extracellular domain of the receptor, while the N-terminus is proposed to interact with the juxtamembranous portion of the receptor to activate signaling. There is currently limited information on the molecular determinants involved in AM signaling, thus we set out to define the importance of the AM N-terminus through five signaling pathways (cAMP production, ERK phosphorylation, CREB phosphorylation, Akt phosphorylation, and IP1 production). We characterized the three CLR:RAMP complexes through the five pathways, finding that each had a distinct repertoire of intracellular signaling pathways that it is able to regulate. We then performed an alanine scan of AM from residues 15-31 and found that most residues could be substituted with only small effects on signaling, and that most substitutions affected signaling through all receptors and pathways in a similar manner. We identify F18, T20, L26, and I30 as being critical for AM function, while also identifying an analogue (AM15-52 G19A) which has unique signaling properties relative to the unmodified AM. We interpret our findings in the context of new structural information, highlighting the complementary nature of structural biology and functional assays.
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Affiliation(s)
- Michael
L. Garelja
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Maggie Au
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Margaret A. Brimble
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
- School
of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Joseph J. Gingell
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Erica R. Hendrikse
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Annie Lovell
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Nicole Prodan
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Patrick M. Sexton
- Drug
Discovery Biology and Department of Pharmacology, Monash Institute
of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Andrew Siow
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- School
of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Christopher S. Walker
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Harriet A. Watkins
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Geoffrey M. Williams
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
- School
of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Denise Wootten
- Drug
Discovery Biology and Department of Pharmacology, Monash Institute
of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Sung H. Yang
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
| | - Paul W. R. Harris
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
- School
of Chemical Sciences, University of Auckland, Auckland, 1010, New Zealand
| | - Debbie L. Hay
- School
of Biological Sciences, University of Auckland, Auckland, 1010, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, 1010, New Zealand
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7
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Williams GM, Ginzel MD. Spatial and Climatic Factors Influence Ambrosia Beetle (Coleoptera: Curculionidae) Abundance in Intensively Managed Plantations of Eastern Black Walnut. Environ Entomol 2020; 49:49-58. [PMID: 31746336 DOI: 10.1093/ee/nvz125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 06/10/2023]
Abstract
Invasive ambrosia beetles are among the most economically important pests of forest and plantation trees world-wide. The development of effective management guidelines for these pests in plantations of high-value hardwood species is hindered by a lack of baseline information regarding their seasonal abundance and dispersal behavior. By analyzing long-term monitoring data from intensively-managed plantations of eastern black walnut (Juglans nigra L.) in north-central Indiana, we identified key spatial and climatic variables that could improve the timing and precision of management actions to reduce ambrosia beetle populations. We also used geospatial analyses to compare species-specific spatial patterns of population density and evaluate the sensitivity of the trap density deployed in our long-term monitoring efforts. Xyleborinus saxesenii Ratzeburg and Xylosandrus crassiusculus Matschulsky (Coleoptera: Curculionidae) were more abundant during the spring in years preceded by a hot, dry growing season, and cold winter. Both species were positively associated with plantation edges during the fall flight period. However, X. saxesenii was less abundant in plantations close to forest corridors, whereas X. crassiusculus was more abundant in plantations closer to woodlots and other walnut plantations. Geospatial analysis revealed X. crassiusculus is active in larger, more spatially continuous patches than X. saxesenii, and that 200-m trap spacing is likely to be sufficient to detect both species in the spring flight period but may be insufficient to detect X. saxesenii during the fall flight period. Our findings underscore the power and utility of long-term monitoring to improve management strategies.
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Affiliation(s)
- G M Williams
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN
| | - M D Ginzel
- Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN
- Department of Entomology, Purdue University, West Lafayette, IN
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8
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Williams GM, Ginzel MD. Erratum to "Spatial and Climatic Factors Influence Ambrosia Beetle (Coleoptera: Curculionidae) Abundance in Intensively Managed Plantations of Eastern Black Walnut". Environ Entomol 2020; 49:268. [PMID: 31925947 DOI: 10.1093/ee/nvz163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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Abstract
We review the structure–activity relationships and synthetic studies of TLR2 agonists – important chemical targets in immunotherapy.
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Affiliation(s)
- Benjamin L. Lu
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
- The School of Chemical Sciences
| | - Geoffrey M. Williams
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
- The School of Chemical Sciences
| | - Margaret A. Brimble
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
- The School of Chemical Sciences
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10
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Lu BL, Williams GM, Verdon DJ, Dunbar PR, Brimble MA. Synthesis and Evaluation of Novel TLR2 Agonists as Potential Adjuvants for Cancer Vaccines. J Med Chem 2019; 63:2282-2291. [PMID: 31418565 DOI: 10.1021/acs.jmedchem.9b01044] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cancer immunotherapy has gained increasing attention due to its potential specificity and lack of adverse side effects when compared to more traditional modes of treatment. Toll-like receptor 2 (TLR2) agonists are lipopeptides possessing the S-[2,3-bis(palmitoyloxy)propyl]-l-cysteine (Pam2Cys) motif and exhibit potent immunostimulatory effects. These agonists offer a means of providing "danger signals" in order to activate the immune system toward tumor antigens. Thus, the development of TLR2 agonists is attractive in the search of potential immunostimulants for cancer. Existing SAR studies of Pam2Cys with TLR2 indicate that the structural requirements for activity are, for the most part, very intolerable. We have investigated the importance of stereochemistry, the effect of N-terminal acylation, and homologation between the two ester functionalities in Pam2Cys-conjugated lipopeptides on TLR2 activity. The R diastereomer is significantly more potent than the S diastereomer and N-terminal modification generally lowers TLR2 activity. Most notably, homologation gives rise to analogues which are comparatively active to the native Pam2Cys containing constructs.
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Affiliation(s)
- Benjamin L Lu
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds Street 1010, Auckland, New Zealand
| | - Geoffrey M Williams
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds Street 1010, Auckland, New Zealand
| | - Daniel J Verdon
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds Street 1010, Auckland, New Zealand
| | - P Rod Dunbar
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds Street 1010, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.,School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3A Symonds Street 1010, Auckland, New Zealand
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11
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Lee KL, Aitken JF, Hsu HL, Williams GM, Brimble MA, Cooper GJS. Glucoregulatory activity of vesiculin in insulin sensitive and resistant mice. Peptides 2019; 116:1-7. [PMID: 31018156 DOI: 10.1016/j.peptides.2019.04.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/11/2019] [Accepted: 04/15/2019] [Indexed: 11/28/2022]
Abstract
Pancreatic islet-derived peptide hormones play key roles in the maintenance of systemic energy homeostasis and glucose balance and defects in their regulation are strongly implicated in the pathogenesis of obesity and diabetes. Peptides have also been used as lead compounds for therapeutics targeting metabolic disease. It is therefore important to understand the activity and function of islet hormones in both their target tissues and the whole organism. Insulin-like growth factor II (IGF-II) is an insulin homolog secreted by the islet β-cells. Vesiculin is a newly discovered peptide hormone, processed from IGF-II and secreted from islet β-cells in response to glucose. We postulated that vesiculin might act to regulate systemic glucose metabolism. Here we report our original investigations of vesiculin's activity in relation to glucoregulation. Vesiculin and IGF-II displayed similar dose-response relationships for lowering blood glucose in insulin-responsive FVB/n mice. By contrast, the ability of IGF-II to lower blood glucose was blunted in insulin-resistant triprolyl human-amylin transgenic mice, whereas vesiculin's ability to lower blood glucose remained unaffected. We also confirmed the ability of vesiculin to bypass insulin resistance in a second mouse model. In vitro analysis of signalling by vesiculin and IGF-II indicates that, like IGF-II, vesiculin signals through the IR/ IGF1R. Overall, we show that removal of only four amino acids from IGF-II has generated a peptide hormone with different bioactivity relevant to blood-glucose regulation. Investigating the differences among vesiculin, IGF-II and insulin signalling and activity may provide new insights into insulin resistance and potentially inform the design of novel therapeutics.
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Affiliation(s)
- Kate L Lee
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand.; Maurice Wilkins Centre for Molecular BioDiscovery, Auckland, New Zealand..
| | - Jacqueline F Aitken
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
| | - Huai-L Hsu
- Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Geoffrey M Williams
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand.; Maurice Wilkins Centre for Molecular BioDiscovery, Auckland, New Zealand
| | - Garth J S Cooper
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand.; Maurice Wilkins Centre for Molecular BioDiscovery, Auckland, New Zealand.; Centre for Advanced Discovery and Experimental Therapeutics, Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, and the School of Biomedicine, the Medical School, University of Manchester, Manchester, UK
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12
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Compton BJ, Farrand KJ, Tang CW, Osmond TL, Speir M, Authier-Hall A, Wang J, Ferguson PM, Chan STS, Anderson RJ, Cooney TR, Hayman CM, Williams GM, Brimble MA, Brooks CR, Yong LK, Metelitsa LS, Zajonc DM, Godfrey DI, Gasser O, Weinkove R, Painter GF, Hermans IF. Enhancing T cell responses and tumour immunity by vaccination with peptides conjugated to a weak NKT cell agonist. Org Biomol Chem 2019; 17:1225-1237. [PMID: 30656346 DOI: 10.1039/c8ob02982b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Activated NKT cells can stimulate antigen-presenting cells leading to enhanced peptide antigen-specific immunity. However, administration of potent NKT cell agonists like α-galactosylceramide (α-GalCer) can be associated with release of high levels of cytokines, and in some situations, hepatotoxicity. Here we show that it is possible to provoke sufficient NKT cell activity to stimulate strong antigen-specific T cell responses without these unwanted effects. This was achieved by chemically conjugating antigenic peptides to α-galactosylphytosphingosine (α-GalPhs), an NKT cell agonist with very weak activity based on structural characterisation and biological assays. Conjugation improved delivery to antigen-presenting cells in vivo, while use of a cathepsin-sensitive linker to release the α-GalPhs and peptide within the same cell promoted strong T cell activation and therapeutic anti-tumour responses in mice. The conjugates activated human NKT cells and enhanced human T cell responses to a viral peptide in vitro. Accordingly, we have demonstrated a means to safely exploit the immunostimulatory properties of NKT cells to enhance T cell activation for virus- and tumour-specific immunity.
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Affiliation(s)
- Benjamin J Compton
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, New Zealand.
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13
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Saiepour N, Najman JM, Ware R, Baker P, Clavarino AM, Williams GM. Does attrition affect estimates of association: A longitudinal study. J Psychiatr Res 2019; 110:127-142. [PMID: 30639918 DOI: 10.1016/j.jpsychires.2018.12.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 12/10/2018] [Accepted: 12/21/2018] [Indexed: 10/27/2022]
Abstract
Survey research frequently involves missing cases attributable to refusals to participate, lack of success in accessing all potential respondents or loss to follow-up in longitudinal studies. There is concern that those not recruited or those lost are a select group whose absence from a study may bias the findings of the study. This study provides a test of the extent to which selective loss to follow-up in a longitudinal study may lead to biased findings. The Mater-University Study of Pregnancy collected baseline information for 7718 pregnant women. Follow-ups occurred five years, 14 years, 21 years and 27 years after the birth, for 6753 eligible women. Participants at baseline were partitioned according to follow-up status for each follow-up. We compare baseline (at recruitment) measures of association, with these same measures of association for those retained in the study (Group A) and those lost to follow-up (Group B) at each phase of data. Using univariate logistic regression we compared the strength of association between maternal mental health and various baseline socio-demographic factors for different rates of loss to follow-up. Estimates of association at baseline, and at each follow-up are similar irrespective of the rate of loss to follow-up and whether the comparison is with those retained in the study or those lost to follow-up. There were no statistically significant differences in 90.8% of baseline comparisons with Group A, and 96.9% of comparisons with Group B measures of association. We conclude that differential loss to follow-up rarely affects estimates of association. We suggest that loss to follow-up may produce misleading findings only in circumstances where loss to follow-up is combined with a number of other sources of bias.
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Affiliation(s)
- N Saiepour
- School of Public Health, The University of Queensland, Herston 4006, Australia
| | - J M Najman
- School of Public Health, The University of Queensland, Herston 4006, Australia; School of Social Sciences, The University of Queensland, St. Lucia 4067, Australia.
| | - R Ware
- School of Public Health, The University of Queensland, Herston 4006, Australia
| | - P Baker
- School of Public Health, The University of Queensland, Herston 4006, Australia
| | - A M Clavarino
- School of Pharmacy, The University of Queensland, Woolloongabba 4102, Australia
| | - G M Williams
- School of Public Health, The University of Queensland, Herston 4006, Australia
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14
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Mamun AA, McIntyre DH, Najman JM, Williams GM, Khatun M, Finlay J, Callaway L. Young adult pregnancy status and the risk of developing overweight and obesity among women and men. Clin Obes 2018; 8:327-336. [PMID: 30047250 DOI: 10.1111/cob.12262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 02/06/2018] [Accepted: 03/11/2018] [Indexed: 01/24/2023]
Abstract
Pregnancies can end in miscarriage, birth or termination. Although it is well known that pregnancy results in weight gain across the life course, it is unknown whether pregnancies which end in termination and miscarriage contribute to this. The study used a sub-sample of 3630 adult offspring from the original cohort of the Mater University of Queensland Study of Pregnancy (MUSP) and its outcomes, in Brisbane, Australia. Anthropometric data were measured at 5, 14 and 21 years of age and experience of pregnancy including termination, miscarriage and births were self-reported at 21 years. Multivariable analyses were conducted to determine whether pregnancy status of young people independently associated with overweight or obesity status. The women who had at least one birth were more likely to have overweight (odds ratio [OR] 1.52; 95% confidence interval [CI]: 1.01, 2.27) or obese (OR 2.38; 95% CI: 1.58, 3.59) compared to women who did not experience any pregnancy. Women whose pregnancies were terminated or miscarried were at the same risk of overweight or obesity as women who did not experience any pregnancy. For men, there is no association between the pregnancies in their partners and the mean difference in their body mass index. Young women whose pregnancies result in a birth, but not terminations or miscarriages, are at greater risk of having overweight or obesity following the birth.
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Affiliation(s)
- A A Mamun
- Institute of Social Science Research, The University of Queensland, Brisbane, Queensland, Australia
| | - D H McIntyre
- School of Medicine, The University of Queensland, Brisbane, Queensland, Australia
- School of Medicine, Mater Health Services, Brisbane, Queensland, Australia
| | - J M Najman
- Institute of Social Science Research, The University of Queensland, Brisbane, Queensland, Australia
- School of Social Science, The University of Queensland, Brisbane, Queensland, Australia
| | - G M Williams
- Institute of Social Science Research, The University of Queensland, Brisbane, Queensland, Australia
| | - M Khatun
- Institute of Social Science Research, The University of Queensland, Brisbane, Queensland, Australia
| | - J Finlay
- Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - L Callaway
- School of Medicine, The University of Queensland, Brisbane, Queensland, Australia
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15
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Abstract
Peptide and protein aberrant lipidation patterns are often involved in many diseases including cancer and neurological disorders. Peptide lipidation is also a promising strategy to improve pharmacokinetic and pharmacodynamic profiles of peptide-based drugs. Self-adjuvanting peptide-based vaccines commonly utilise the powerful TLR2 agonist PamnCys lipid to stimulate adjuvant activity. The chemical synthesis of lipidated peptides can be challenging hence efficient, flexible and straightforward synthetic routes to access homogeneous lipid-tagged peptides are in high demand. A new technique coined Cysteine Lipidation on a Peptide or Amino acid (CLipPA) uses a 'thiol-ene' reaction between a cysteine and a vinyl ester and offers great promise due to its simplicity, functional group compatibility and selectivity. Herein a brief review of various synthetic strategies to access lipidated peptides, focusing on synthetic methods to incorporate a PamnCys motif into peptides, is provided.
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Affiliation(s)
- Renata Kowalczyk
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, New Zealand.,School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Geoffrey M Williams
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, New Zealand.,School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand
| | - Sung-Hyun Yang
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, New Zealand.,School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds St, Auckland, New Zealand. .,School of Biological Sciences, The University of Auckland, 3A Symonds St, Auckland, New Zealand. .,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland, 1010, New Zealand.
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16
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Gasser O, Sharples KJ, Barrow C, Williams GM, Bauer E, Wood CE, Mester B, Dzhelali M, Caygill G, Jones J, Hayman CM, Hinder VA, Macapagal J, McCusker M, Weinkove R, Painter GF, Brimble MA, Findlay MP, Dunbar PR, Hermans IF. A phase I vaccination study with dendritic cells loaded with NY-ESO-1 and α-galactosylceramide: induction of polyfunctional T cells in high-risk melanoma patients. Cancer Immunol Immunother 2018; 67:285-298. [PMID: 29094183 PMCID: PMC11028320 DOI: 10.1007/s00262-017-2085-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 07/02/2017] [Accepted: 10/23/2017] [Indexed: 12/22/2022]
Abstract
Vaccines that elicit targeted tumor antigen-specific T-cell responses have the potential to be used as adjuvant therapy in patients with high risk of relapse. However, the responses induced by vaccines in cancer patients have generally been disappointing. To improve vaccine function, we investigated the possibility of exploiting the immunostimulatory capacity of type 1 Natural killer T (NKT) cells, a cell type enriched in lymphoid tissues that can trigger improved antigen-presenting function in dendritic cells (DCs). In this phase I dose escalation study, we treated eight patients with high-risk surgically resected stage II-IV melanoma with intravenous autologous monocyte-derived DCs loaded with the NKT cell agonist α-GalCer and peptides derived from the cancer testis antigen NY-ESO-1. Two synthetic long peptides spanning defined immunogenic regions of the NY-ESO-1 sequence were used. This therapy proved to be safe and immunologically effective, inducing increases in circulating NY-ESO-1-specific T cells that could be detected directly ex vivo in seven out of eight patients. These responses were achieved using as few as 5 × 105 peptide-loaded cells per dose. Analysis after in vitro restimulation showed increases in polyfunctional CD4+ and CD8+ T cells that were capable of manufacturing two or more cytokines simultaneously. Evidence of NKT cell proliferation and/or NKT cell-associated cytokine secretion was seen in most patients. In light of these strong responses, the concept of including NKT cell agonists in vaccine design requires further investigation.
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Affiliation(s)
- Olivier Gasser
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Katrina J Sharples
- Dunedin School of Medicine, University of Otago, PO Box 56, Dunedin, 9054, New Zealand
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Catherine Barrow
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Geoffrey M Williams
- Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
| | - Evelyn Bauer
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Catherine E Wood
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Brigitta Mester
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
| | - Marina Dzhelali
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | | | - Jeremy Jones
- GlycoSyn, PO Box 31 310, Lower Hutt, 5040, New Zealand
| | - Colin M Hayman
- The Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower Hutt, 5046, New Zealand
| | - Victoria A Hinder
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Jerome Macapagal
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Monica McCusker
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Robert Weinkove
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand
- Capital and Coast District Health Board, Private Bag 7902, Wellington, 6242, New Zealand
| | - Gavin F Painter
- The Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower Hutt, 5046, New Zealand
| | - Margaret A Brimble
- Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
| | - Michael P Findlay
- Cancer Trials New Zealand, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - P Rod Dunbar
- Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand
- School of Biological Sciences, University of Auckland, PO Box 92019, Auckland, New Zealand
| | - Ian F Hermans
- Malaghan Institute of Medical Research, PO Box 7060, Wellington, 6242, New Zealand.
- Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland, 1142, New Zealand.
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, 6140, New Zealand.
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17
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Suetani S, Mamun A, Williams GM, Najman JM, McGrath JJ, Scott JG. The association between adolescent psychopathology and subsequent physical activity in young adulthood: a 21-year birth cohort study. Psychol Med 2018; 48:269-278. [PMID: 28625171 DOI: 10.1017/s0033291717001660] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND The beneficial effects of physical activity (PA) for both physical and mental wellbeing are well established. Given that adolescence presents a critical developmental period during which life-long patterns of PA become established, the exploration of the longitudinal impact of adolescent psychopathology on adult PA status is of interest. METHODS We analysed prospective data from 3663 young adults who participated in the Mater-University of Queensland Study of Pregnancy. Psychopathology was measured using the Youth Self-Report (YSR) at age 14. Participants' engagement in three types of PA (vigorous exercise, moderate exercise and walking) at age 21 were dichotomised into either 'none' or 'any'. For our main analysis, we examined the association between the YSR score and subsequent PA engagement using logistic regression. We also conducted sensitivity analyses of longitudinal associations between the YSR internalising and externalising symptoms score at age 14 and PA engagement at age 21. RESULTS We found no longitudinal association between the total YSR score at age 14 and PA engagement at age 21. In addition, there was no longitudinal association between the YSR internalising or externalising symptoms and PA engagement. CONCLUSION Our findings suggest that there is no longitudinal association between adolescent psychopathology and PA in young adulthood.
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Affiliation(s)
- S Suetani
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health,Wacol,Australia
| | - A Mamun
- Institute for Social Science Research,The University of Queensland, Indooroopilly,Australia
| | - G M Williams
- School of Population Health, The University of Queensland,Herston,Australia
| | - J M Najman
- School of Population Health, The University of Queensland,Herston,Australia
| | - J J McGrath
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health,Wacol,Australia
| | - J G Scott
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health,Wacol,Australia
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18
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Anderson RJ, Li J, Kedzierski L, Compton BJ, Hayman CM, Osmond TL, Tang CW, Farrand KJ, Koay HF, Almeida CFDSSE, Holz LR, Williams GM, Brimble MA, Wang Z, Koutsakos M, Kedzierska K, Godfrey DI, Hermans IF, Turner SJ, Painter GF. Augmenting Influenza-Specific T Cell Memory Generation with a Natural Killer T Cell-Dependent Glycolipid-Peptide Vaccine. ACS Chem Biol 2017; 12:2898-2905. [PMID: 29043774 DOI: 10.1021/acschembio.7b00845] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of a universal vaccine for influenza A virus (IAV) that does not require seasonal modification is a long-standing health goal, particularly in the context of the increasing threat of new global pandemics. Vaccines that specifically induce T cell responses are of considerable interest because they can target viral proteins that are more likely to be shared between different virus strains and subtypes and hence provide effective cross-reactive IAV immunity. From a practical perspective, such vaccines should induce T cell responses with long-lasting memory, while also being simple to manufacture and cost-effective. Here we describe the synthesis and evaluation of a vaccine platform based on solid phase peptide synthesis and bio-orthogonal conjugation methodologies. The chemical approach involves covalently attaching synthetic long peptides from a virus-associated protein to a powerful adjuvant molecule, α-galactosylceramide (α-GalCer). Strain-promoted azide-alkyne cycloaddition is used as a simple and efficient method for conjugation, and pseudoproline methodology is used to increase the efficiency of the peptide synthesis. α-GalCer is a glycolipid that stimulates NKT cells, a population of lymphoid-resident immune cells that can provide potent stimulatory signals to antigen-presenting cells engaged in driving proliferation and differentiation of peptide-specific T cells. When used in mice, the vaccine induced T cell responses that provided effective prophylactic protection against IAV infection, with the speed of viral clearance greater than that seen from previous viral exposure. These findings are significant because the vaccines are highly defined, quick to synthesize, and easily characterized and are therefore appropriate for large scale affordable manufacture.
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Affiliation(s)
- Regan J. Anderson
- The
Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower
Hutt 5046, New Zealand
| | - Jasmine Li
- Department
of Microbiology, Biomedical Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
| | - Lukasz Kedzierski
- Department
of Microbiology, Biomedical Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
| | - Benjamin J. Compton
- The
Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower
Hutt 5046, New Zealand
| | - Colin M. Hayman
- The
Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower
Hutt 5046, New Zealand
| | - Taryn L. Osmond
- Malaghan Institute of Medical Research, PO Box
7060, Wellington 6242, New Zealand
| | - Ching-wen Tang
- Malaghan Institute of Medical Research, PO Box
7060, Wellington 6242, New Zealand
| | - Kathryn J. Farrand
- Malaghan Institute of Medical Research, PO Box
7060, Wellington 6242, New Zealand
| | - Hui-Fern Koay
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
- Australian
Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Catarina Filipa Dos Santos Sa E. Almeida
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
- Australian
Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Lauren R. Holz
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
| | - Geoffrey M. Williams
- School
of Biological Sciences, The University of Auckland, 3 Symonds St, Auckland Central 1142, New Zealand
| | - Margaret A Brimble
- School
of Biological Sciences, The University of Auckland, 3 Symonds St, Auckland Central 1142, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds St, Auckland Central 1142, New Zealand
| | - Zhongfang Wang
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
| | - Marios Koutsakos
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
| | - Katherine Kedzierska
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
| | - Dale I. Godfrey
- Department
of Microbiology and Immunology, at the Doherty Institute for Infection
and Immunity, The University of Melbourne, 792 Elizabeth St, Melbourne, Victoria 3010, Australia
- Australian
Research Council Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Ian F. Hermans
- Malaghan Institute of Medical Research, PO Box
7060, Wellington 6242, New Zealand
- Maurice
Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3 Symonds St, Auckland Central 1142, New Zealand
- Avalia Immunotherapies Limited, Gracefield Innovation
Quarter, 69 Gracefield Rd, Lower Hutt 5010, New Zealand
| | - Stephen J. Turner
- Department
of Microbiology, Biomedical Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
| | - Gavin F. Painter
- The
Ferrier Research Institute, Victoria University of Wellington, PO Box 33436, Lower
Hutt 5046, New Zealand
- Avalia Immunotherapies Limited, Gracefield Innovation
Quarter, 69 Gracefield Rd, Lower Hutt 5010, New Zealand
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19
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Najman JM, Plotnikova M, Williams GM, Alati R, Mamun AA, Scott J, Clavarino AM, Wray N. Maternal depression and family adversity: Linked pathways to offspring depression? J Psychiatr Res 2017; 88:97-104. [PMID: 28110084 DOI: 10.1016/j.jpsychires.2017.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 11/30/2016] [Accepted: 01/09/2017] [Indexed: 01/24/2023]
Abstract
There is conflicting evidence about the contribution of maternal depression and family adversity to depression experienced by offspring. Because maternal depression and family adversity are related, there is a need to determine how they independently contribute to offspring depression. Data are from a long-running prospective birth cohort study (Mater-University of Queensland Study of Pregnancy and its outcomes - MUSP). For this study some 2200 offspring were followed up at 30 years of age. We first examine the association between maternal depression and family adversity over the period from the pregnancy to the child reaching adulthood. Then we consider the extent to which maternal depression and family adversity trajectories over this period predict CIDI/DSM-IV episodes of depression in the offspring of these mothers at 30 years of age. We find a strong bi-directional association between maternal depression and family experiences of adverse life events over the entire period the child is at home. After adjustment, children reared in a family experiencing high levels of adverse life events are more likely to experience a lifetime ever DSM-IV diagnosis of depression, are more likely to have experienced multiple episodes of lifetime ever depression, and are more likely to report their first episode of depression was at a younger age. The findings suggest the association between maternal depression and offspring depression appears to be partly attributable to the higher levels of family adversity characteristic of depressed mothers.
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Affiliation(s)
- Jake M Najman
- Schools of Public Health and Social Science, The University of Queensland, Brisbane, Australia.
| | - M Plotnikova
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - G M Williams
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - R Alati
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - A A Mamun
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - J Scott
- UQCCR, The University of Queensland, Brisbane Australia
| | - A M Clavarino
- School of Pharmacy, The University of Queensland, Brisbane, Australia
| | - N Wray
- Queensland Brain Institute, The University of Queensland, Brisbane, Australia
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20
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Cameron AM, Wesson RN, Ahmadi AR, Singer AL, Hu X, Okabayashi T, Wang Y, Shigoka M, Fu Y, Gao W, Raccusen LC, Montgomery RA, Williams GM, Sun Z. Chimeric Allografts Induced by Short-Term Treatment With Stem Cell Mobilizing Agents Result in Long-Term Kidney Transplant Survival Without Immunosuppression: II, Study in Miniature Swine. Am J Transplant 2016; 16:2066-76. [PMID: 26748958 DOI: 10.1111/ajt.13703] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 12/21/2015] [Accepted: 12/27/2015] [Indexed: 01/25/2023]
Abstract
Transplantation is now lifesaving therapy for patients with end-stage organ failure but requires lifelong immunosuppression with resultant morbidity. Current immunosuppressive strategies inhibit T cell activation and prevent donor-recipient engagement. Therefore, it is not surprising that few host cells are demonstrated in donor grafts. However, our recent small animal studies found large numbers of recipient stem cells present after transplantation and pharmacological mobilization, resulting in a chimeric, repopulated organ. We now confirm these findings in a well-characterized large animal preclinical model. Here, we show that AMD3100 and FK506 mobilization of endogenous stem cells immediately post kidney transplantation combined with repeat therapy at 1, 2, and 3 months led to drug-free long-term survival in maximally immunologically mismatched swine. Three long-term recipients have stable chimeric transplants, preserved antidonor skin graft responses, and normal serum creatinine levels despite withdrawal of all medication for 3 years.
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Affiliation(s)
- A M Cameron
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - R N Wesson
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - A R Ahmadi
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - A L Singer
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Transplant Center, Mayo Clinic, Phoenix, AZ, USA
| | - X Hu
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Urology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - T Okabayashi
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Surgery, Kochi Health Center, Kochi University, Kochi, Japan
| | - Y Wang
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - M Shigoka
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Surgery, Tokyo Medical University, Tokyo, Japan
| | - Y Fu
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Transplant Center, Tianjin First Central Hospital, Tianjin, China
| | - W Gao
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.,Transplant Center, Tianjin First Central Hospital, Tianjin, China
| | - L C Raccusen
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - R A Montgomery
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - G M Williams
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Z Sun
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
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21
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Yang SH, Harris PWR, Williams GM, Brimble MA. Lipidation of Cysteine or Cysteine-Containing Peptides Using the Thiol-Ene Reaction (CLipPA). European J Org Chem 2016. [DOI: 10.1002/ejoc.201501375] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Iatropoulos MJ, Duan JD, Schmuck G, Williams GM. The urinary bladder carcinogen propoxur does not produce genotoxic effects in the urinary bladder of Wistar male rats. ACTA ACUST UNITED AC 2015; 67:453-8. [PMID: 26164753 DOI: 10.1016/j.etp.2015.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 03/11/2015] [Revised: 06/03/2015] [Accepted: 06/08/2015] [Indexed: 11/19/2022]
Abstract
Propoxur (PPX) is a carbamate insecticide which induced urinary bladder cancer in Wistar rats when fed at 5000ppm in Altromin 1321 diet (1321). In the present investigation, PPX was studied for induction of several key events related to modes of action (MOA) of carcinogenicity in urinary bladders (UBs). Wistar rats were administered the compound for 28 days at 8000ppm in Provini Liba SA 3883 diet, which is similar to the 1321 diet. o-Anisidine HCl (AH) was used as a genotoxic UB carcinogenic comparator, and trisodium nitrilotriacetate (NTA) as an epigenetic UB carcinogen comparator. Along with the non-dosed control and three test substance groups (PPX, AH, NTA), four more groups were additionally fed 2% ammonium chloride (AC) in the diet to acidify the urine, since 1321 was reported to increase urinary pH. AC did acidify the urine, as expected, although the 3883 diet itself did not increase pH values above 8. In the alkaline comet assay, AH produced DNA single strand breaks (SSBs) in the UB urothelium (UBU) irrespective of AC administration, whereas PPX and NTA did not. In the nucleotide (32)P-postlabeling assay (NPL), AH produced DNA adducts irrespective of AC administration, whereas PPX and NTA did not. Routine (H&E) histopathology evaluation of the UBU did not reveal any hyperplasia or evidence of luminal microprecipitates or calculi in any of the groups. Assessment of UBU proliferation as measured by immunohistochemistry of proliferating cell nuclear antigen, revealed that NTA and NTA plus AC increased the replicating fraction (RF). Also AH plus AC, but not AH alone, increased the RF of UBU, whereas PPX groups were not significantly different from controls. Thus, the results reveal no evidence for DNA SSBs, binding, or alteration of DNA synthesis in the UBU by PPX, while demonstrating UBU DNA damage by AH and showing that NTA does not damage DNA, but causes increased UBU proliferation. The findings are in accord with a genotoxic MOA for AH, and an epigenetic MOA for NTA. The MOA of PPX does not involve genotoxicity and may be specific to the 1321 diet.
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Affiliation(s)
| | - J-D Duan
- New York Medical College, Valhalla, NY 10595, USA
| | - G Schmuck
- Bayer Schering Pharma AG, D-42096 Wuppertal, Germany
| | - G M Williams
- New York Medical College, Valhalla, NY 10595, USA.
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23
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Lee KL, Middleditch MJ, Williams GM, Brimble MA, Cooper GJS. Using mass spectrometry to detect, differentiate, and semiquantitate closely related peptide hormones in complex milieu: measurement of IGF-II and vesiculin. Endocrinology 2015; 156:1194-9. [PMID: 25545381 DOI: 10.1210/en.2014-1593] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The search for an islet β-cell growth factor has been a key objective in recent diabetes research, because the ability to regenerate and/or protect the functioning β-cell population in patients could result in a great advancement for diabetes treatment. IGF-I and IGF-II are known to play crucial roles in fetal growth and prenatal development, and there is growing evidence that IGF-II increases β-cell proliferation and survival in vitro and in vivo. A search for the source of IGF-II-like immunoreactivity in isolated β-cell secretory granules from the murine cell line βTC6-F7 revealed a novel 2-chain IGF-II-derived peptide, which we named vesiculin and which has been shown to be a full insulin agonist. Here, we present a liquid chromatography-tandem mass spectrometry method that enables selective detection and semiquantitation of the highly related IGF-II and vesiculin molecules. We have used this method to measure these 2 peptides in conditioned media from 2 β-cell lines, produced under increasing glucose concentrations. This technique detected both IGF-II and vesiculin in media conditioned by MIN6 and βTC6-F7 cells at levels in the range of 0 to 6 μM (total insulin, 80-450 μM) and revealed a glucose-stimulated increase in insulin, IGF-II, and vesiculin. IGF-II was detected in adult human and neonatal mouse serum in high levels, but vesiculin was not present. The methodology we present herein has utility for detecting and differentiating active peptides that are highly related and of low abundance.
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Affiliation(s)
- Kate L Lee
- School of Biological Sciences (K.L.L., M.J.M., G.J.S.C.), School of Chemical Sciences (G.M.W., M.A.B.), and Maurice Wilkins Centre for Molecular BioDiscovery (M.J.M., M.A.B., G.J.S.C.), The University of Auckland, Auckland 1010, New Zealand; and Centre for Advanced Discovery and Experimental Therapeutics (G.J.S.C.), Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, and the School of Biomedicine, the Medical School, University of Manchester, Manchester M13 9WL, United Kingdom
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Williams GM, Lee K, Li X, Cooper GJS, Brimble MA. Replacement of the CysA7–CysB7 disulfide bond with a 1,2,3-triazole linker causes unfolding in insulin glargine. Org Biomol Chem 2015; 13:4059-63. [DOI: 10.1039/c5ob00160a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two analogues of insulin glargine containing a 1,4-disubstituted 1,2,3-triazole group in place of the CysA7–CysB7 disulfide bond were prepared using CuAAC click chemistry to efficiently join the peptide chains.
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Affiliation(s)
| | - Kathryn Lee
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
| | - Xun Li
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
| | - Garth J. S. Cooper
- The School of Biological Sciences
- University of Auckland
- Auckland 1010
- New Zealand
| | - Margaret A. Brimble
- The School of Chemical Sciences
- University of Auckland
- Auckland 1010
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery
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25
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Pugh TJ, Yu W, Yang J, Field AL, Ambrogio L, Carter SL, Cibulskis K, Giannikopoulos P, Kiezun A, Kim J, McKenna A, Nickerson E, Getz G, Hoffher S, Messinger YH, Dehner LP, Roberts CWM, Rodriguez-Galindo C, Williams GM, Rossi CT, Meyerson M, Hill DA. Exome sequencing of pleuropulmonary blastoma reveals frequent biallelic loss of TP53 and two hits in DICER1 resulting in retention of 5p-derived miRNA hairpin loop sequences. Oncogene 2014; 33:5295-302. [PMID: 24909177 PMCID: PMC4224628 DOI: 10.1038/onc.2014.150] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 04/13/2014] [Accepted: 04/14/2014] [Indexed: 01/21/2023]
Abstract
Pleuropulmonary blastoma is a rare childhood malignancy of lung mesenchymal cells that can remain dormant as epithelial cysts or progress to high-grade sarcoma. Predisposing germline loss-of-function DICER1 variants have been described. We sought to uncover additional contributors through whole exome sequencing of 15 tumor/normal pairs, followed by targeted resequencing, miRNA analysis and immunohistochemical analysis of additional tumors. In addition to frequent biallelic loss of TP53 and mutations of NRAS or BRAF in some cases, each case had compound disruption of DICER1: a germline (12 cases) or somatic (3 cases) loss-of-function variant plus a somatic missense mutation in the RNase IIIb domain. 5p-Derived microRNA (miRNA) transcripts retained abnormal precursor miRNA loop sequences normally removed by DICER1. This work both defines a genetic interaction landscape with DICER1 mutation and provides evidence for alteration in miRNA transcripts as a consequence of DICER1 disruption in cancer.
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Affiliation(s)
- T J Pugh
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - W Yu
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
- Center for Genetic Medicine Research and Department of Pathology, Children's National Medical Center, Washington, DC, USA
| | - J Yang
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
- Center for Genetic Medicine Research and Department of Pathology, Children's National Medical Center, Washington, DC, USA
| | - A L Field
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
- Center for Genetic Medicine Research and Department of Pathology, Children's National Medical Center, Washington, DC, USA
| | - L Ambrogio
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - S L Carter
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - K Cibulskis
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | | | - A Kiezun
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - J Kim
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - A McKenna
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - E Nickerson
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - G Getz
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - S Hoffher
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
- Center for Genetic Medicine Research and Department of Pathology, Children's National Medical Center, Washington, DC, USA
| | - Y H Messinger
- Children's Hospitals and Clinics of Minnesota, Minneapolis, MN, USA
| | - L P Dehner
- Department of Pathology and Immunology, Washington University Medical Center, St Louis, MO, USA
| | - C W M Roberts
- Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Boston Children's Hospital, Boston, MA, USA
- Dana-Farber/Children's Cancer Center, Boston, MA, USA
| | - C Rodriguez-Galindo
- Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Boston Children's Hospital, Boston, MA, USA
- Dana-Farber/Children's Cancer Center, Boston, MA, USA
| | - G M Williams
- Children's Hospitals and Clinics of Minnesota, Minneapolis, MN, USA
| | - C T Rossi
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
| | - M Meyerson
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Dana-Farber Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - D A Hill
- Department of Integrative Systems Biology, George Washington University, Washington, DC, USA
- Center for Genetic Medicine Research and Department of Pathology, Children's National Medical Center, Washington, DC, USA
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26
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Fu Y, Sun Z, Fuchs EJ, Wang Y, Shen ZY, Maeda H, Lin Q, Warren DS, Williams GM, Montgomery RA. Successful transplantation of kidney allografts in sensitized rats after syngeneic hematopoietic stem cell transplantation and fludarabine. Am J Transplant 2014; 14:2375-83. [PMID: 25139564 DOI: 10.1111/ajt.12815] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 08/07/2013] [Revised: 04/24/2014] [Accepted: 05/01/2014] [Indexed: 01/25/2023]
Abstract
Current methods to remove donor-specific HLA antibody (DSA) from sensitized patients remain imperfect. We tested novel approaches to desensitization using an animal model of allogeneic sensitization with skin grafts from dark agouti (DA) to Lewis rats. At the peak IgG alloantibody response we transplanted DA kidneys into nephrectomized Lewis recipients (n = 6) and all died within 10 days from antibody-mediated rejection (AMR). Allogeneic hematopoietic stem cell transplants (HSCT) from DA donors failed to engraft after lethal or sub-lethal irradiation. Sensitized rats given lethal irradiation plus syngeneic green fluorescent protein (GFP) + HSCT had repopulation of blood, spleen, thymus and lymph nodes by GFP+ cells. At 2 months after HSCT, serum DSA levels were reduced 60-70% and DSA (IgG) production in cultured splenocytes was also significantly decreased. However, there was only a modest improvement in graft survival from an average of 6.5 to 13.9 (n = 9) days. Adding seven daily doses of fludarabine to the preconditioning regimen resulted in long-term survival (>90 days) in 7 out of 10 rat kidney allografts. We conclude that syngeneic HSCT performed after preconditioning with irradiation and fludarabine can reduce DSA, prevent DSA rebound and AMR, enabling successful transplantation in animals with strong antibody reactivity to the donor MHC.
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Affiliation(s)
- Y Fu
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD; Department of Transplant Surgery, Tianjin First Central Hospital Clinic Institute, Tianjin Medical University, Tianjin, China
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27
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Hughes MCB, Olsen CM, Williams GM, Green AC. A prospective study of cigarette smoking and basal cell carcinoma. Arch Dermatol Res 2014; 306:851-6. [PMID: 25234270 DOI: 10.1007/s00403-014-1503-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 09/08/2014] [Accepted: 09/15/2014] [Indexed: 12/17/2022]
Abstract
To investigate the relationship between smoking and primary basal cell carcinoma (BCC), we analyzed data from a 16 year prospective study among randomly selected adults in Nambour, Queensland, Australia. Participants underwent a skin examination in 1992 and took part in an intervention study and follow-up. Information about complexion type and smoking habits including duration and number of cigarettes smoked per day and sun exposure behavior were collected at baseline in 1992, with updates to end of follow-up in 2007. Newly-diagnosed BCCs were ascertained from regional pathology laboratories. Relative risks (RR) of BCC among former and current smokers were estimated using generalized linear models specifying a Poisson distribution with robust error variance and (log) person-years at-risk as offset, adjusting for BCC risk factors. From 1992 to 2007, 281 BCCs were diagnosed in 1,277 participants with available smoking history and no past BCC. Relative to non-smokers, a non-significant inverse association between current smoking and BCC was seen (RR 0.69; 95 % CI 0.45-1.05) but not for former smokers (RR 1.05; 95 % CI 0.84-1.31). Amongst current smokers, inverse associations with BCC were found in those who smoked for up to 18 years (RR 0.44) but not more and those who smoked up to 15 cigarettes per day but not more. The associations with both current and former smoking varied by degree of sunburn propensity. The modest inverse association between current smoking and BCC is considered unlikely to be causal given lack of clear relation with duration or intensity of smoking.
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Affiliation(s)
- M C B Hughes
- Population Health Department, QIMR Berghofer Medical Research Institute, 300 Herston Rd, Brisbane, QLD, 4006, Australia,
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Watkins HA, Au M, Bobby R, Archbold JK, Abdul-Manan N, Moore JM, Middleditch MJ, Williams GM, Brimble MA, Dingley AJ, Hay DL. Identification of key residues involved in adrenomedullin binding to the AM1 receptor. Br J Pharmacol 2014; 169:143-55. [PMID: 23351143 DOI: 10.1111/bph.12118] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 12/11/2012] [Accepted: 01/07/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Adrenomedullin (AM) is a peptide hormone whose receptors are members of the class B GPCR family. They comprise a heteromer between the GPCR, the calcitonin receptor-like receptor and one of the receptor activity-modifying proteins 1-3. AM plays a significant role in angiogenesis and its antagonist fragment AM22-52 can inhibit blood vessel and tumour growth. The mechanism by which AM interacts with its receptors is unknown. EXPERIMENTAL APPROACH We determined the AM22-52 binding epitope for the AM1 receptor extracellular domain using biophysical techniques, heteronuclear magnetic resonance spectroscopy and alanine scanning. KEY RESULTS Chemical shift perturbation experiments located the main binding epitope for AM22-52 at the AM1 receptor to the C-terminal 8 amino acids. Isothermal titration calorimetry of AM22-52 alanine-substituted peptides indicated that Y52, G51 and I47 are essential for AM1 receptor binding and that K46 and P49 and R44 have a smaller role to play. Characterization of these peptides at the full-length AM receptors was assessed in Cos7 cells by cAMP assay. This confirmed the essential role of Y52, G51 and I47 in binding to the AM1 receptor, with their substitution resulting in ≥100-fold reduction in antagonist potency compared with AM22-52 . R44A, K46A, S48A and P49A AM22-52 decreased antagonist potency by approximately 10-fold. CONCLUSIONS AND IMPLICATIONS This study localizes the main binding epitope of AM22-52 to its C-terminal amino acids and distinguishes essential residues involved in this binding. This will inform the development of improved AM receptor antagonists.
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Affiliation(s)
- H A Watkins
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
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29
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Harris PWR, Kowalczyk R, Yang SH, Williams GM, Brimble MA. An important side reaction using the thiol, 3,6-dioxa-1,8-octanedithiol (DODT), in 9-fluorenylmethoxycarbonyl-based solid phase peptide synthesis. J Pept Sci 2013; 20:186-90. [DOI: 10.1002/psc.2595] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 11/05/2013] [Accepted: 11/09/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Paul W. R. Harris
- School of Chemical Sciences; The University of Auckland; 23 Symonds St Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
| | - Renata Kowalczyk
- School of Chemical Sciences; The University of Auckland; 23 Symonds St Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
| | - Sung-Hyun Yang
- School of Chemical Sciences; The University of Auckland; 23 Symonds St Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
| | - Geoffrey M. Williams
- School of Chemical Sciences; The University of Auckland; 23 Symonds St Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences; The University of Auckland; 23 Symonds St Auckland 1142 New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery; The University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
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Wright TH, Brooks AES, Didsbury AJ, Williams GM, Harris PWR, Dunbar PR, Brimble MA. Berichtigung: Direct Peptide Lipidation through Thiol-Ene Coupling Enables Rapid Synthesis and Evaluation of Self-Adjuvanting Vaccine Candidates. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308276] [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: 11/05/2022]
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Wright TH, Brooks AES, Didsbury AJ, Williams GM, Harris PWR, Dunbar PR, Brimble MA. Corrigendum: Direct Peptide Lipidation through Thiol-Ene Coupling Enables Rapid Synthesis and Evaluation of Self-Adjuvanting Vaccine Candidates. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/anie.201308276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Wright TH, Brooks AES, Didsbury AJ, MacIntosh JD, Williams GM, Harris PWR, Dunbar PR, Brimble MA. Direct peptide lipidation through thiol-ene coupling enables rapid synthesis and evaluation of self-adjuvanting vaccine candidates. Angew Chem Int Ed Engl 2013; 52:10616-9. [PMID: 23939951 DOI: 10.1002/anie.201305620] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Indexed: 11/10/2022]
Abstract
A radical lipidation: Application of a novel thiol-ene lipidation enables the one-step synthesis of self-adjuvanting antigenic peptides as vaccine candidates. The resultant monoacyl lipopeptides are shown to activate monocytes in a robust manner.
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Affiliation(s)
- Tom H Wright
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland Central, 1142 (New Zealand)
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33
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Wright TH, Brooks AES, Didsbury AJ, Williams GM, Harris PWR, Dunbar PR, Brimble MA. Direct Peptide Lipidation through Thiol-Ene Coupling Enables Rapid Synthesis and Evaluation of Self-Adjuvanting Vaccine Candidates. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305620] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Kueh JTB, Choi KW, Williams GM, Moehle K, Bacsa B, Robinson JA, Brimble MA. Synthesis of a 6,6-Spiroketal Amino Acid and Its Incorporation into a Peptide Turn Sequence Using Solid-Phase Peptide Synthesis. Chemistry 2013; 19:3807-11. [DOI: 10.1002/chem.201204546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Indexed: 11/10/2022]
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Williams GM, Cooper GJS, Lee K, Whiting L, Brimble MA. Synthesis of the IGF-II-like hormone vesiculin using regioselective formation of disulfide bonds. Org Biomol Chem 2013; 11:3145-50. [DOI: 10.1039/c3ob40322j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
OBJECTIVE Delusional-like experiences (DLE) are common in the general community and are associated with a family history of mental illness. The aim of this study was to estimate the heritability of DLE. METHOD The Peter's Delusional Inventory (PDI) was administered to a population-based cohort of mothers (n = 2861, aged 35-67 years) and their adult offspring (n = 3079, aged 18-23 years). Heritability of DLE was estimated from the sum scores of the 21 item PDI under the assumption that the covariance between mother-offspring scores is attributable to shared additive genetic factors. RESULTS The means (medians and standard deviations) for the total PDI scores for the mothers and their offspring were 3.6 (3.0, 3.0) and 5.0 (4.0, 3.5), respectively. The Pearson correlation coefficient between mother and offspring PDI scores was 0.17 (P < 0.001). The heritability was estimated to be 0.35 (standard error 0.04). CONCLUSION Heritable factors contribute to over a third of the variance of PDI scores in this population. In light of the association between a family history of a wide range of mental disorders and DLE, these experiences may represent a useful quantitative endophenotype for genetic studies of common mental disorders in population settings.
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Affiliation(s)
- D Varghese
- Metro South Mental Health, Princess Alexandra Hospital, Brisbane, Qld, Australia.
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Callaway LK, Mamun A, McIntyre HD, Williams GM, Najman JM, Nitert MD, Lawlor DA. Does a history of hypertensive disorders of pregnancy help predict future essential hypertension? Findings from a prospective pregnancy cohort study. J Hum Hypertens 2012; 27:309-14. [DOI: 10.1038/jhh.2012.45] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Rattan D, Mamun A, Najman JM, Williams GM, Doi SA. Smoking behaviour in pregnancy and its impact on smoking cessation at various intervals during follow-up over 21 years: a prospective cohort study. BJOG 2012; 120:288-95; discussion 296. [DOI: 10.1111/1471-0528.12027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lee DJ, Yang SH, Williams GM, Brimble MA. Synthesis of Multivalent Neoglyconjugates of MUC1 by the Conjugation of Carbohydrate-Centered, Triazole-Linked Glycoclusters to MUC1 Peptides Using Click Chemistry. J Org Chem 2012; 77:7564-71. [DOI: 10.1021/jo3013435] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dong Jun Lee
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Sung-Hyun Yang
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Geoffrey M. Williams
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Margaret A. Brimble
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
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Iatropoulos MJ, Duan JD, Jeffrey AM, Leach MW, Hayes AN, Stedman NL, Williams GM. Hepatocellular proliferation and hepatocarcinogen bioactivation in mice with diet-induced fatty liver and obesity. ACTA ACUST UNITED AC 2012; 65:451-6. [PMID: 22459205 DOI: 10.1016/j.etp.2012.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 01/11/2012] [Accepted: 01/25/2012] [Indexed: 01/06/2023]
Abstract
Human liver cancer is in part associated with obesity and related metabolic diseases. The present study was undertaken in a mouse model of diet-induced obesity (DIO) and hepatic steatosis, conditions which can be associated with hepatic neoplasia, to determine whether the rates of cell proliferation or hepatocarcinogen bioactivation were altered in ways which could facilitate hepatocarcinogenesis. DIO mice were generated by feeding C57BL/6 (B6) male mice a high-fat diet beginning at 4 weeks of age; age-matched conventional lean (LEAN) B6 mice fed a low fat diet (10% Kcal from fat) were used for comparison. Groups of 28 week old DIO and LEAN mice were dosed with the bioactivation-dependent DNA-reactive hepatocarcinogen 2-acetylaminofluorene (AAF), at 2.24 or 22.4 mg/kg, given by gavage 3 times per week for 31 days, or received no treatment (DIO and LEAN control groups). Compared with the LEAN control group, the DIO control group had a higher mean body weight (16.5 g), higher mean absolute (1.4 g) and mean relative (25.5%) liver weights, higher (394%) liver triglyceride concentrations, and an increased incidence and severity of hepatocellular steatosis at the end of the dosing phase. The DIO control group also had a higher mean hepatocellular replicating fraction (31% increase, determined by proliferating cell nuclear antigen immunohistochemistry). Hepatocarcinogen bioactivation, based on formation of AAF DNA adducts as measured by nucleotide (32)P-postlabeling, was similar in both DIO and LEAN AAF-dosed groups. Thus, hepatocellular proliferation, but not hepatocarcinogen bioactivation, was identified as an alteration in livers of DIO mice which could contribute to their susceptibility to hepatocarcinogenesis.
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Affiliation(s)
- M J Iatropoulos
- Department of Pathology, New York Medical College, Valhalla, NY, USA
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Heapy AM, Williams GM, Fraser JD, Brimble MA. Synthesis of a dicarba analogue of human β-defensin-1 using a combined ring closing metathesis--native chemical ligation strategy. Org Lett 2012; 14:878-81. [PMID: 22239540 DOI: 10.1021/ol203407z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We herein describe the first synthesis of the native antimicrobial protein HBD-1 making use of an orthogonal thiol protection strategy and a novel dicarba analogue thereof. The robust hydrocarbon linkage was installed by replacement of one disulfide bond using on-resin ring closing metathesis. The unprecedented 59-membered C-terminal cysteine macrocyclic fragment thus formed then engages in native chemical ligation allowing convergent access to this unique synthetic protein analogue.
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Affiliation(s)
- Amanda M Heapy
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
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Herbert KR, Williams GM, Cooper GJS, Brimble MA. Synthesis of glycosylated 5-hydroxylysine, an important amino acid present in collagen-like proteins such as adiponectin. Org Biomol Chem 2012; 10:1137-44. [DOI: 10.1039/c1ob06394d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Okabayashi T, Cameron AM, Hisada M, Montgomery RA, Williams GM, Sun Z. Mobilization of host stem cells enables long-term liver transplant acceptance in a strongly rejecting rat strain combination. Am J Transplant 2011; 11:2046-56. [PMID: 21883903 PMCID: PMC3190303 DOI: 10.1111/j.1600-6143.2011.03698.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [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: 01/25/2023]
Abstract
Careful examination of liver, kidney and heart transplants in human recipients has revealed small numbers of host bone marrow derived stem cells in the graft. If the limited recipient repopulation of a donor graft that is currently observed could be facilitated, it is possible that conversion to a predominantly host phenotype would permit long-term graft function without immunosuppression. We proposed to "engineer" repopulation after transplant in a strain combination (dark agouti [DA] to Lewis green fluorescent protein+[LEW GFP+]) which rejects liver grafts strongly, a model that more closely resembles the situation in humans. Treatment on days 0, 1, 2, 3 and 7 after transplantation with low-dose (0.1 mg/kg) tacrolimus (T) designed to blunt rejection combined with plerixafor (P) to mobilize host stem cells resulted in greater than 180 days graft survival with extensive albeit spotty conversion of a small (50%) DA graft to the recipient LEW GFP+ genotype. Subsequent skin grafting revealed donor-specific graft prolongation. The T plus P treatment resulted in higher levels of Lin-Thy1+CD34+CD133+ stem cells and Foxp3+ regulatory T cells in the blood and liver at day 7. Thus, pharmacological mobilization of host stem cells sustains liver allografts by two mechanisms: repopulation of injured donor cells and regulation of the immune response.
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Affiliation(s)
- T Okabayashi
- Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Abstract
Primary ciliary dyskinesia (PCD) results in chronic nasal symptoms and chest disease leading to bronchiectasis. We noted a number of patients referred for diagnostic testing whose initial results suggested PCD due to an inner dynein arm or radial spoke defect but in whom no abnormality was found on retesting. The present study was an audit of all patients referred for PCD diagnostic testing over a 3-yr period whose initial electron microscopy (EM) and beat pattern analysis suggested an inner dynein arm or radial spoke defect. 21 patients referred for diagnostic testing for PCD suspected of an inner dynein arm defect and six suspected of a radial spoke defect on initial EM and beat pattern analysis had repeat testing performed. On repeat testing, five patients initially suspected of an inner dynein arm defect and one with a radial spoke defect had normal EM and beat pattern, leading to the initial diagnosis being questioned. Patients suspected of PCD due to an inner dynein arm defect or radial spoke defect should have the diagnosis reassessed if it has been based on only one diagnostic sample.
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Affiliation(s)
- C O'Callaghan
- Dept of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK.
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Johnson AD, Bennett RH, Newey J, Pryce GJ, Williams GM, Burke TM, Jones JC, Keir AM. InNxSb1−x Light Emitting Diodes Grown by MBE. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-607-23] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We present the first reported MBE growth of light emitting diodes (LED's) with active regions made up of InSb/ InNxSbl−x (O<x<0.02) superlattices, grown onto InSb(100) substrates. Such dilute alloys of nitrogen in other III-V materials have been shown to exhibit very large bandgap bowing parameters due to differences in atomic size and the electro-negativity of nitrogen. Novel growth techniques have been developed to enable epitaxy of high quality InNxSbl−x, using an electron cyclotron resonance (ECR) plasma source. Material characterisation was performed by double crystal x-ray diffraction (DXRD) and transmission electron microscopy (TEM), and nitrogen composition has been determined using DXRD and secondary ion mass spectrometry (SIMS). To determine the effect of nitrogen on bandgap, the structures have been fabricated into LED's with InSb/InNxSbl−x superlattice active regions with period ∼1100A. For a nitrogen content of ∼0.3%, the peak emission of the diodes shifts from ∼6pm to >71µm at room temperature.
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Welham J, Scott J, Williams GM, Najman JM, Bor W, O'Callaghan M, McGrath J. The antecedents of non-affective psychosis in a birth-cohort, with a focus on measures related to cognitive ability, attentional dysfunction and speech problems. Acta Psychiatr Scand 2010; 121:273-9. [PMID: 19694626 DOI: 10.1111/j.1600-0447.2009.01470.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Adults with non-affective psychosis show subtle deviations in a range of developmental trajectories as children and adolescents. METHOD Based on a birth-cohort (n = 3801), we examined the Peabody Picture Vocabulary Test (PPTV) at age 5, and Raven's Standard Progressive Matrices (RSPM) and Wide Range Achievement Test reading scale (WRAT-R) at age 14. Items related to speech problems and attentional dysfunction were available from maternal- or self-report. At age 21, we identified 60 cohort members who were screen-positive for non-affective psychosis (SP-NAP). RESULTS Impaired performance on the PPVT and RSPM (but not WRAT-R) predicted SP-NAP for males only. Male cohort members in the highest quartile for attentional dysfunction at ages 5 and 14 were about 5-8 times more likely to develop SP-NAP. SP-NAP in males was significantly associated with speech problems at age 14. CONCLUSION Males who develop non-affective psychoses have subtle impairments in cognitive capacity prior to the development of their psychotic disorder.
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Affiliation(s)
- J Welham
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, Australia
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Najman JM, Keeping JD, Morrison J, Western JS, Williams GM. Social class, religion and contraceptive failure in a sample of pregnant women in Brisbane. Community Health Stud 2010; 8:323-31. [PMID: 6518752 DOI: 10.1111/j.1753-6405.1984.tb00461.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Najman JM, Morrison J, Keeping JD, Andersen MJ, Williams GM. Social factors associated with the decision to relinquish a baby for adoption. Community Health Stud 2010; 14:180-9. [PMID: 2208982 DOI: 10.1111/j.1753-6405.1990.tb00039.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Little is known about the characteristics, social circumstances and mental health of women who give a child up for adoption. This paper reports data from a longitudinal study of 8556 women interviewed initially at their first obstetrical visit. In total, 7668 proceeded to give birth to a live singleton baby, of which 64 then relinquished the baby for adoption. Relinquishing mothers were predominantly 18 years of age or younger, in the lowest family income group, single, having an unplanned and/or unwanted baby and reported that they were not living with a partner. These women were somewhat more likely to manifest symptoms of anxiety and depression both prior, and subsequent to, the adoption, but the majority of relinquishing mothers were of 'normal' mental health. The decision to relinquish a baby appears to be a consequence of an unwanted pregnancy experienced by an economically deprived single mother rather than the result of emotional or psychological/psychiatric considerations. These findings document a particular dimension of the impact of poverty on health.
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Affiliation(s)
- J M Najman
- Department of Social and Preventive Medicine, University of Queensland
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