Dr Simon Calaminus' Outputs (23)

Microplastics in human blood: Polymer types, concentrations and characterisation using μFTIR (2024)
Journal Article
Leonard, S. V. L., Liddle, C. R., Atherall, C. A., Chapman, E., Watkins, M., Calaminus, S. D. J., & Rotchell, J. M. (2024). Microplastics in human blood: Polymer types, concentrations and characterisation using μFTIR. Environment International, 188, Article 108751. https://doi.org/10.1016/j.envint.2024.108751

Microplastics (MPs) are an everyday part of life, and are now ubiquitous in the environment. Crucially, MPs have not just been found within the environment, but also within human bodies, including the blood. We aimed to provide novel information on t... Read More about Microplastics in human blood: Polymer types, concentrations and characterisation using μFTIR.

Quantum Dot Imaging Agents: Haematopoietic Cell Interactions and Biocompatibility (2024)
Journal Article
Naylor-Adamson, L., Price, T. W., Booth, Z., Stasiuk, G. J., & Calaminus, S. D. (2024). Quantum Dot Imaging Agents: Haematopoietic Cell Interactions and Biocompatibility. Cells, 13(4), Article 354. https://doi.org/10.3390/cells13040354

Quantum dots (QDs) are semi-conducting nanoparticles that have been developed for a range of biological and non-biological functions. They can be tuned to multiple different emission wavelengths and can have significant benefits over other fluorescen... Read More about Quantum Dot Imaging Agents: Haematopoietic Cell Interactions and Biocompatibility.

Is the PEGylation of indium phosphide/zinc sulphide quantum dots the first step in creating a platelet biocompatible multimodal imaging agent? (2024)
Thesis
Booth, Z. Is the PEGylation of indium phosphide/zinc sulphide quantum dots the first step in creating a platelet biocompatible multimodal imaging agent?. (Thesis). Hull York Medical School. https://hull-repository.worktribe.com/output/4790560

Background:
Indium phosphide/zinc sulphide (InP/ZnS) quantum dots (QDs) are semiconductive nanoparticles that have received growing focus due to the perception that they are safer than heavy metal based QDs. InP/ZnS QDs possess a highly fluorescent... Read More about Is the PEGylation of indium phosphide/zinc sulphide quantum dots the first step in creating a platelet biocompatible multimodal imaging agent?.

Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets (2023)
Journal Article
Gil, H. M., Booth, Z., Price, T. W., Lee, J., Naylor‐Adamson, L., Avery, M., …Stasiuk, G. J. (in press). Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets. Small, Article 2304881. https://doi.org/10.1002/smll.202304881

InP/ZnS quantum dots (QDs) have received a large focus in recent years as a safer alternative to heavy metal-based QDs. Given their intrinsic fluorescent imaging capabilities, these QDs can be potentially relevant for in vivo platelet imaging. The In... Read More about Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets.

Platelet zinc status regulates prostaglandin-induced signaling, altering thrombus formation (2023)
Journal Article
Coupland, C. A., Naylor-Adamson, L., Booth, Z., Price, T. W., Gil, H. M., Firth, G., …Calaminus, S. D. (2023). Platelet zinc status regulates prostaglandin-induced signaling, altering thrombus formation. Journal of thrombosis and haemostasis : JTH, 21(9), 2545-2558. https://doi.org/10.1016/j.jtha.2023.05.008

Background: Approximately 17.3% of the global population exhibits an element of zinc (Zn2+) deficiency. One symptom of Zn2+ deficiency is increased bleeding through impaired hemostasis. Platelets are crucial to hemostasis and are inhibited by endothe... Read More about Platelet zinc status regulates prostaglandin-induced signaling, altering thrombus formation.

Should aspirin be replaced with ADP blockers or anti-GPVI to manage thrombosis? (2022)
Journal Article
Khan, H., Ghulam, T., Ahmed, N., Babar, M. R., Calaminus, S. D., & Yusuf, M. Z. (2022). Should aspirin be replaced with ADP blockers or anti-GPVI to manage thrombosis?. Vascular Biology, https://doi.org/10.1530/vb-22-0010

Platelets have a pivotal role in maintaining cardiovascular homeostasis. They are kept docile by endothelial derived mediators. Aberration in haemostatic balance predisposes an individual to an elevated risk of a pro-thrombotic environment. Anti-plat... Read More about Should aspirin be replaced with ADP blockers or anti-GPVI to manage thrombosis?.

Practical considerations of dissolved oxygen levels for platelet function under hypoxia (2021)
Journal Article
Kusanto, B., Gordon, A., Naylor-Adamson, L., Atkinson, L., Coupland, C., Booth, Z., …Arman, M. (2021). Practical considerations of dissolved oxygen levels for platelet function under hypoxia. International Journal of Molecular Sciences, 22(24), Article 13223. https://doi.org/10.3390/ijms222413223

Investigating human platelet function in low-oxygen environments is important in multiple settings, including hypobaric hypoxia (e.g., high altitude), sea level hypoxia-related disease, and thrombus stability. These studies often involve drawing bloo... Read More about Practical considerations of dissolved oxygen levels for platelet function under hypoxia.

NIR-quantum dots in biomedical imaging and their future (2021)
Journal Article
Gil, H. M., Price, T. W., Chelani, K., Bouillard, J. S. G., Calaminus, S. D., & Stasiuk, G. J. (2021). NIR-quantum dots in biomedical imaging and their future. iScience, 24(3), Article 102189. https://doi.org/10.1016/j.isci.2021.102189

Fluorescence imaging has gathered interest over the recent years for its real-time response and high sensitivity. Developing probes for this modality has proven to be a challenge. Quantum dots (QDs) are colloidal nanoparticles that possess unique opt... Read More about NIR-quantum dots in biomedical imaging and their future.

An investigation into the effect of oxLDL and cyclic nucleotides on platelet cytoskeletal function (2020)
Thesis
Ahmed, Y. (2020). An investigation into the effect of oxLDL and cyclic nucleotides on platelet cytoskeletal function. (Thesis). Hull York Medical School, The University of Hull and The University of York. Retrieved from https://hull-repository.worktribe.com/output/4200904

Atherosclerosis is a major underlying cause in cardiovascular disease and a significant health concern in developed countries. Part of the mechanism by which platelets are linked to this process is via their activation by oxidised Low-Density Lipopro... Read More about An investigation into the effect of oxLDL and cyclic nucleotides on platelet cytoskeletal function.

Methods to study the roles of Rho GTPases in platelet function (2018)
Book Chapter
Rivero, F., & Calaminus, S. (2018). Methods to study the roles of Rho GTPases in platelet function. In F. Rivero (Ed.), Rho GTPases: Methods and Protocols (199-217). Humana Press. https://doi.org/10.1007/978-1-4939-8612-5_14

Platelets are a critical cell for prevention of bleeding. Part of the response to the formation of the thrombus is the activation of the actin cytoskeleton, with an inability to effectively activate the cytoskeleton linked to thrombus formation defec... Read More about Methods to study the roles of Rho GTPases in platelet function.

Reversal of stress fibre formation by Nitric Oxide mediated RhoA inhibition leads to reduction in the height of preformed thrombi (2018)
Journal Article
Atkinson, L., Yusuf, M. Z., Aburima, A., Ahmed, Y., Thomas, S. G., Naseem, K. M., & Calaminus, S. D. J. (2018). Reversal of stress fibre formation by Nitric Oxide mediated RhoA inhibition leads to reduction in the height of preformed thrombi. Scientific reports, 8(1), Article ARTN 3032. https://doi.org/10.1038/s41598-018-21167-6

© 2018 The Author(s). Evidence has emerged to suggest that thrombi are dynamic structures with distinct areas of differing platelet activation and inhibition. We hypothesised that Nitric oxide (NO), a platelet inhibitor, can modulate the actin cytosk... Read More about Reversal of stress fibre formation by Nitric Oxide mediated RhoA inhibition leads to reduction in the height of preformed thrombi.

Prostacyclin reverses platelet stress fibre formation causing platelet aggregate instability (2017)
Journal Article
Yusuf, M. Z., Raslan, Z., Atkinson, L., Aburima, A., Thomas, S. G., Naseem, K. M., & Calaminus, S. D. (2017). Prostacyclin reverses platelet stress fibre formation causing platelet aggregate instability. Scientific reports, 7(1), Article ARTN 5582. https://doi.org/10.1038/s41598-017-05817-9

Prostacyclin (PGI2) modulates platelet activation to regulate haemostasis. Evidence has emerged to suggest that thrombi are dynamic structures with distinct areas of differing platelet activation. It was hypothesised that PGI2 could reverse platelet... Read More about Prostacyclin reverses platelet stress fibre formation causing platelet aggregate instability.

Association of type 1 inositol 1,4,5-trisphosphate receptor (IP₃R1) with protein kinase A and A-kinase Anchoring Protein 9 (AKAP9) in platelets (2017)
Thesis
Trivedi, A. N. (2017). Association of type 1 inositol 1,4,5-trisphosphate receptor (IP₃R1) with protein kinase A and A-kinase Anchoring Protein 9 (AKAP9) in platelets. (Thesis). Hull York Medical School, the University of Hull and the University of York. Retrieved from https://hull-repository.worktribe.com/output/4219204

Cyclic adenosine monophsphoate (cAMP) signalling is thought to regulate inositol-1,4,5 trisphosphate (IP₃)-mediated calcium (Ca²⁺) mobilisation in platelets through protein kinase A (PKA)-mediated phosphorylation, leading to inhibition of inositol-1,... Read More about Association of type 1 inositol 1,4,5-trisphosphate receptor (IP₃R1) with protein kinase A and A-kinase Anchoring Protein 9 (AKAP9) in platelets.

cAMP signaling reverses platelet spreading via inhibition of RhoA (2016)
Thesis
Yusuf, M. Z. (2016). cAMP signaling reverses platelet spreading via inhibition of RhoA. (Thesis). Hull York Medical School, the University of Hull and the University of York. Retrieved from https://hull-repository.worktribe.com/output/4218863

Prostacyclin (PGI₂) is a key regulator of platelet function. There is a significant field of research which outlines the role of PGI₂ in inhibiting platelets in circulation, and therefore playing a major role in the prevention of excessive thrombus f... Read More about cAMP signaling reverses platelet spreading via inhibition of RhoA.

CXCR2 and CXCL4 regulate survival and self-renewal of hematopoietic stem/progenitor cells (2016)
Journal Article
Sinclair, A., Park, L., Shah, M., Drotar, M., Calaminus, S., Hopcroft, L. E., Kinstrie, R., Guitart, A. V., Dunn, K., Abraham, S. A., Sansom, O., Michie, A. M., Machesky, L., Kranc, K. R., Graham, G. J., Pellicano, F., & Holyoake, T. L. (2016). CXCR2 and CXCL4 regulate survival and self-renewal of hematopoietic stem/progenitor cells. Blood, 128(3), 371-383. https://doi.org/10.1182/blood-2015-08-661785

The regulation of hematopoietic stem cell (HSC) survival and self-renewal within the bone marrow (BM) niche is not well understood. We therefore investigated global transcriptomic profiling of normal human HSC/hematopoietic progenitor cells [HPCs], r... Read More about CXCR2 and CXCL4 regulate survival and self-renewal of hematopoietic stem/progenitor cells.

Megakaryocytes assemble podosomes that degrade matrix and protrude through basement membrane (2013)
Journal Article
Schachtner, H., Calaminus, S. D. J., Sinclair, A., Monypenny, J., Blundell, M. P., Leon, C., Holyoake, T. L., Thrasher, A. J., Michie, A. M., Vukovic, M., Gachet, C., Jones, G. E., Thomas, S. G., Watson, S. P., & Machesky, L. M. (2013). Megakaryocytes assemble podosomes that degrade matrix and protrude through basement membrane. Blood, 121(13), 2542-2552. https://doi.org/10.1182/blood-2012-07-443457

Megakaryocytes give rise to platelets via extension of proplatelet arms, which are released through the vascular sinusoids into the bloodstream. Megakaryocytes and their precursors undergo varying interactions with the extracellular environment in th... Read More about Megakaryocytes assemble podosomes that degrade matrix and protrude through basement membrane.

Lineage tracing of Pf4-Cre marks hematopoietic stem cells and their progeny (2012)
Journal Article
Calaminus, S. D. J., Guitart, A., Sinclair, A., Schachtner, H., Watson, S. P., Holyoake, T. L., Kranc, K. R., & Machesky, L. M. (2012). Lineage tracing of Pf4-Cre marks hematopoietic stem cells and their progeny. PLoS ONE, 7(12), e51361. https://doi.org/10.1371/journal.pone.0051361

The development of a megakaryocyte lineage specific Cre deleter, using the Pf4 (CXCL4) promoter (Pf4-Cre), was a significant step forward in the specific analysis of platelet and megakaryocyte cell biology. However, in the present study we have emplo... Read More about Lineage tracing of Pf4-Cre marks hematopoietic stem cells and their progeny.

Actin on trafficking: could actin guide directed receptor transport? (2012)
Journal Article
Zech, T., Calaminus, S. D., & Machesky, L. M. (2012). Actin on trafficking: could actin guide directed receptor transport?. Cell adhesion & migration, 6(6), 476-481. https://doi.org/10.4161/cam.21373

Here, we present emerging ideas surrounding the interplay between the actin cytoskeleton and receptor transport and activation. The bulk of actin dynamics in cells is thought to contribute to architecture and mobility. Actin also contributes to traff... Read More about Actin on trafficking: could actin guide directed receptor transport?.

Tissue inducible Lifeact expression allows visualization of actin dynamics in vivo and ex vivo (2012)
Journal Article
Schachtner, H., Li, A., Stevenson, D., Calaminus, S. D., Thomas, S. G., Watson, S. P., Sixt, M., Wedlich-Soldner, R., Strathdee, D., & Machesky, L. M. (2012). Tissue inducible Lifeact expression allows visualization of actin dynamics in vivo and ex vivo. European journal of cell biology, 91(11-12), 923-929. https://doi.org/10.1016/j.ejcb.2012.04.002

We describe here the development and characterization of a conditionally inducible mouse model expressing Lifeact-GFP, a peptide that reports the dynamics of filamentous actin. We have used this model to study platelets, megakaryocytes and melanoblas... Read More about Tissue inducible Lifeact expression allows visualization of actin dynamics in vivo and ex vivo.

The Arp2/3 activator WASH regulates α5β1-integrin-mediated invasive migration (2011)
Journal Article
Zech, T., Calaminus, S., Caswell, P., Spence, H. J., Carnell, M., Insall, R. H., Norman, J., & Machesky, L. M. (2012). The Arp2/3 activator WASH regulates α5β1-integrin-mediated invasive migration. Journal of cell science, 124(22), 3753-3759. https://doi.org/10.1242/jcs.080986

The actin cytoskeleton provides scaffolding and physical force to effect fundamental processes such as motility, cytokinesis and vesicle trafficking. The Arp2/3 complex nucleates actin structures and contributes to endocytic vesicle invagination and... Read More about The Arp2/3 activator WASH regulates α5β1-integrin-mediated invasive migration.

G-protein coupled and ITAM receptor regulation of the formin FHOD1 through Rho Kinase in platelets (2011)
Journal Article
Thomas, S. G., Calaminus, S., Machesky, L. M., Alberts, A. S., & Watson, S. P. (2011). G-protein coupled and ITAM receptor regulation of the formin FHOD1 through Rho Kinase in platelets. Journal of thrombosis and haemostasis : JTH, 9(8), 1648-1651. https://doi.org/10.1111/j.1538-7836.2011.04357.x

Actin polymerization driven by WASH causes V-ATPase retrieval and vesicle neutralization before exocytosis (2011)
Journal Article
Carnell, M., Zech, T., Calaminus, S. D., Ura, S., Hagedorn, M., Johnston, S. A., May, R. C., Soldati, T., Machesky, L. M., & Insall, R. H. (2011). Actin polymerization driven by WASH causes V-ATPase retrieval and vesicle neutralization before exocytosis. Journal of Cell Biology, 193(5), 831-839. https://doi.org/10.1083/jcb.201009119

WASP and SCAR homologue (WASH) is a recently identified and evolutionarily conserved regulator of actin polymerization. In this paper, we show that WASH coats mature Dictyostelium discoideum lysosomes and is essential for exocytosis of indigestible m... Read More about Actin polymerization driven by WASH causes V-ATPase retrieval and vesicle neutralization before exocytosis.

Identification of a novel, actin-rich structure, the actin nodule, in the early stages of platelet spreading (2008)
Journal Article
Calaminus, S. D. J., Thomas, S., McCarty, O. J. T., Machesky, L. M., & Watson, S. P. (2008). Identification of a novel, actin-rich structure, the actin nodule, in the early stages of platelet spreading. Journal of thrombosis and haemostasis : JTH, 6(11), 1944-1952. https://doi.org/10.1111/j.1538-7836.2008.03141.x

During platelet spreading, the actin cytoskeleton undergoes marked changes, forming filopodia, lamellipodia and stress fibres. In the present study, we report the identification of a novel actin-rich structure, termed an actin nodule, which appears p... Read More about Identification of a novel, actin-rich structure, the actin nodule, in the early stages of platelet spreading.