All Outputs (20)

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.

Synthesis of a porphyrin with histidine-like chelate: an efficient path towards molecular PDT/SPECT theranostics (2020)
Journal Article
Yap, S. Y., Savoie, H., Renard, I., Burke, B. P., Sample, H. C., Michue-Seijas, S., …Stasiuk, G. J. (2020). Synthesis of a porphyrin with histidine-like chelate: an efficient path towards molecular PDT/SPECT theranostics. Chemical communications : Chem comm / the Royal Society of Chemistry, 56(75), 11090-11093. https://doi.org/10.1039/d0cc03958f

© The Royal Society of Chemistry 2020. The goal of “personalised” medicine has seen a growing interest in the development of theranostic agents. Bifunctional, and targeted-trifunctional, theranostic water-soluble porphyrins with a histidine-like chel... Read More about Synthesis of a porphyrin with histidine-like chelate: an efficient path towards molecular PDT/SPECT theranostics.

Evaluation of a bispidine‐based chelator for gallium‐68 and of the porphyrin conjugate as PET/PDT theranostic agent (2020)
Journal Article
Price, T., Yap, S. Y., Gillet, R., Savoie, H., Charbonnière, L. J., Boyle, R. W., …Stasiuk, G. J. (2020). Evaluation of a bispidine‐based chelator for gallium‐68 and of the porphyrin conjugate as PET/PDT theranostic agent. Chemistry: a European journal, 26(34), 7602-7608. https://doi.org/10.1002/chem.201905776

In this study a bispidine ligand has been applied to the complexation of gallium(III) and radiolabelled with gallium-68 for the first time. Despite its 5-coordinate nature, the resulting complex is stable in serum for over two hours, demonstrating a... Read More about Evaluation of a bispidine‐based chelator for gallium‐68 and of the porphyrin conjugate as PET/PDT theranostic agent.

Water-Soluble Rhenium Phosphine Complexes Incorporating the Ph2C(X) Motif (X = O–, NH–): Structural and Cytotoxicity Studies (2020)
Journal Article
Alshamrani, A. F., Prior, T. J., Burke, B. P., Roberts, D. P., Archibald, S. J., Higham, L. J., …Redshaw, C. (2020). Water-Soluble Rhenium Phosphine Complexes Incorporating the Ph2C(X) Motif (X = O–, NH–): Structural and Cytotoxicity Studies. Inorganic chemistry, 59(4), 2367-2378. https://doi.org/10.1021/acs.inorgchem.9b03239

Reaction of [ReOCl3(PPh3)2] or [ReO2I(PPh3)2] with 2,2′-diphenylglycine (dpgH2) in refluxing ethanol afforded the air-stable complex [ReO(dpgH)(dpg)(PPh3)] (1). Treatment of [ReO(OEt)I2(PPh3)2] with 1,2,3-triaza-7-phosphaadamantane (PTA) afforded the... Read More about Water-Soluble Rhenium Phosphine Complexes Incorporating the Ph2C(X) Motif (X = O–, NH–): Structural and Cytotoxicity Studies.

Combined magnetic resonance imaging and photodynamic therapy using polyfunctionalised nanoparticles bearing robust gadolinium surface units (2020)
Journal Article
Chabloz, N., Perry, H., Yoon, I., Coulson, A., White, A., Stasiuk, G., …Wilton-Ely, J. (in press). Combined magnetic resonance imaging and photodynamic therapy using polyfunctionalised nanoparticles bearing robust gadolinium surface units. Chemistry: a European journal, https://doi.org/10.1002/chem.201904757

A robust dithiocarbamate tether allows novel gadolinium units based on DOTAGA (q = 1) to be attached to the surface of gold nanoparticles (2.6 ‐ 4.1 nm diameter) along with functional units offering biocompatibility, targeting and photodynamic therap... Read More about Combined magnetic resonance imaging and photodynamic therapy using polyfunctionalised nanoparticles bearing robust gadolinium surface units.

Polyfunctionalised nanoparticles bearing robust gadolinium surface units for high relaxivity performance in MRI (2019)
Journal Article
Nicolas, C., Wenzel, M., Perry, H., Yoon, I., Molisso, S., Stasiuk, G., …Wilton-Ely, J. (in press). Polyfunctionalised nanoparticles bearing robust gadolinium surface units for high relaxivity performance in MRI. Chemistry: a European journal, https://doi.org/10.1002/chem.201901820

The first example of an octadentate gadolinium unit based on DO3A (hydration number q = 1) with a dithiocarbamate tether has been designed and attached to the surface of gold nanoparticles (around 4.4 nm in diameter). In addition to the superior robu... Read More about Polyfunctionalised nanoparticles bearing robust gadolinium surface units for high relaxivity performance in MRI.

Synthesis of super bright indium phosphide colloidal quantum dots through thermal diffusion (2019)
Journal Article
Clarke, M. T., Viscomi, F. N., Chamberlain, T. W., Hondow, N., Adawi, A. M., Sturge, J., …Stasiuk, G. J. (2019). Synthesis of super bright indium phosphide colloidal quantum dots through thermal diffusion. Communications Chemistry, 2(1), Article 36. https://doi.org/10.1038/s42004-019-0138-z

© 2019, The Author(s). Indium phosphide based quantum dots have emerged in recent years as alternatives to traditional heavy metal (cadmium, lead) based materials suitable for biomedical application due to their non-toxic nature. The major barrier to... Read More about Synthesis of super bright indium phosphide colloidal quantum dots through thermal diffusion.

A 18F radiolabelled Zn(ii) sensing fluorescent probe (2018)
Journal Article
Price, T. W., Firth, G., Eling, C. J., Kinnon, M., Long, N. J., Sturge, J., & Stasiuk, G. J. (2018). A 18F radiolabelled Zn(ii) sensing fluorescent probe. Chemical communications : Chem comm / the Royal Society of Chemistry, 54(26), 3227-3230. https://doi.org/10.1039/c8cc00687c

A selective fluorescent probe for Zn(ii), AQA-F, has been synthesized. AQA-F exhibits a ratiometric shift in emission of up to 80 nm upon binding Zn(ii) ([AQA-F] = 0.1 mM, [Zn(ii)Cl 2 ] = 0-300 μM). An enhancement of quantum yield from Φ = 4.2% to Φ... Read More about A 18F radiolabelled Zn(ii) sensing fluorescent probe.

Amino acid based gallium-68 chelators capable of radiolabeling at neutral pH (2017)
Journal Article
Kubicek, V., Bohmova, Z., Price, T. W., Gallo, J., Kubíček, V., Böhmová, Z., …Stasiuk, G. J. (2017). Amino acid based gallium-68 chelators capable of radiolabeling at neutral pH. Dalton Transactions : an international journal of inorganic chemistry, 46(48), 16973-16982. https://doi.org/10.1039/c7dt03398b

Gallium-68 ( 68 Ga) has been the subject of increasing interest for its potential in the production of radiotracers for diagnosis of diseases. In this work we report the complexation of 68 Ga by the amino acid based tripodal chelate H 3 Dpaa, and two... Read More about Amino acid based gallium-68 chelators capable of radiolabeling at neutral pH.

Dual-modal SERS/fluorescence AuNP probe for mitochondrial imaging (2017)
Journal Article
Eling, C. J., Price, T. W., Marshall, A. R. L., Narda Viscomi, F., Robinson, P., Firth, G., …Stasiuk, G. J. (2017). Dual-modal SERS/fluorescence AuNP probe for mitochondrial imaging. ChemPlusChem, 82(5), 674-680. https://doi.org/10.1002/cplu.201600593

A novel SERS/fluorescent multimodal imaging probe for mitochondria has been synthesised using 12 nm diameter gold nanoparticles (AuNP) surface functionalised with a rhodamine thiol derivative ligand. The normal pH dependant acidic fluorescence of the... Read More about Dual-modal SERS/fluorescence AuNP probe for mitochondrial imaging.

How to study basement membrane stiffness as a biophysical trigger in prostate cancer and other age-related pathologies or metabolic diseases (2016)
Journal Article
Rodriguez-Teja, M., Breit, C., Clarke, M., Talar, K., Wang, K., Mohammad, M. A., …Sturge, J. (2016). How to study basement membrane stiffness as a biophysical trigger in prostate cancer and other age-related pathologies or metabolic diseases. Journal of visualized experiments : JoVE, 2016(115), https://doi.org/10.3791/54230

Here we describe a protocol that can be used to study the biophysical microenvironment related to increased thickness and stiffness of the basement membrane (BM) during age-related pathologies and metabolic disorders (e.g. cancer, diabetes, microvasc... Read More about How to study basement membrane stiffness as a biophysical trigger in prostate cancer and other age-related pathologies or metabolic diseases.

Synthesis, structures and cytotoxicity studies of p-sulfonatocalix[4]arene lanthanide complexes (2016)
Journal Article
Miller-Shakesby, D. M., Burke, B. P., Nigam, S., Stasiuk, G. J., Prior, T. J., Archibald, S. J., & Redshaw, C. (2016). Synthesis, structures and cytotoxicity studies of p-sulfonatocalix[4]arene lanthanide complexes. CrystEngComm RSC, 18(26), 4977-4987. https://doi.org/10.1039/c6ce00209a

A number of p-sulfonatocalix[4]arene complexes of the lanthanides (Tb, Gd, and Eu) have been prepared, some in the presence of tetraazamacrocycle 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A), and fully characterised. Crystal structure d... Read More about Synthesis, structures and cytotoxicity studies of p-sulfonatocalix[4]arene lanthanide complexes.

Current advances in ligand design for inorganic positron emission tomography tracers ⁶⁸Ga, ⁶⁴Cu, ⁸⁹Zr and ⁴⁴Sc (2016)
Journal Article
Price, T. W., Greenman, J., & Stasiuk, G. J. (2016). Current advances in ligand design for inorganic positron emission tomography tracers ⁶⁸Ga, ⁶⁴Cu, ⁸⁹Zr and ⁴⁴Sc. Dalton Transactions : an international journal of inorganic chemistry, 45(40), 15702-15724. https://doi.org/10.1039/c5dt04706d

A key part of the development of metal based Positron Emission Tomography probes is the chelation of the radiometal. In this review the recent developments in the chelation of four positron emitting radiometals, 68Ga, 64Cu, 89Zr and 44Sc, are explore... Read More about Current advances in ligand design for inorganic positron emission tomography tracers ⁶⁸Ga, ⁶⁴Cu, ⁸⁹Zr and ⁴⁴Sc.

Tuning the relaxation rates of dual-mode T₁/T₂ nanoparticle contrast agents: a study into the ideal system (2015)
Journal Article
Keasberry, N. A., Bañobre-López, M., Wood, C., Stasiuk, G. J., Gallo, J., & Long, N. J. (2015). Tuning the relaxation rates of dual-mode T₁/T₂ nanoparticle contrast agents: a study into the ideal system. Nanoscale, 7(38), 16119-16128. https://doi.org/10.1039/c5nr04400f

Magnetic resonance imaging (MRI) is an excellent imaging modality. However the low sensitivity of the technique poses a challenge to achieving an accurate image of function at the molecular level. To overcome this, contrast agents are used; typically... Read More about Tuning the relaxation rates of dual-mode T₁/T₂ nanoparticle contrast agents: a study into the ideal system.

Pancreatic β-cell imaging in humans: Fiction or option? (2015)
Journal Article
Laurent, D., Vinet, L., Lamprianou, S., Daval, M., Filhoulaud, G., Ktorza, A., …Hecksher-Sørensen, J. (2016). Pancreatic β-cell imaging in humans: Fiction or option?. Diabetes, Obesity and Metabolism, 18(1), 6-15. https://doi.org/10.1111/dom.12544

Diabetes mellitus is a growing worldwide epidemic disease, currently affecting 1 in 12 adults. Treatment of disease complications typically consumes ∼10% of healthcare budgets in developed societies. Whilst immune‐mediated destruction of insulin‐secr... Read More about Pancreatic β-cell imaging in humans: Fiction or option?.

Dual-modal magnetic resonance/fluorescent zinc probes for pancreatic β-cell mass imaging (2015)
Journal Article
Stasiuk, G. J., Minuzzi, F., Sae-Heng, M., Rivas, C., Juretschke, H., Piemonti, L., …Long, N. J. (2015). Dual-modal magnetic resonance/fluorescent zinc probes for pancreatic β-cell mass imaging. Chemistry: a European journal, 21(13), 5023-5033. https://doi.org/10.1002/chem.201406008

Despite the contribution of changes in pancreatic β-cell mass to the development of all forms of diabetes mellitus, few robust approaches currently exist to monitor these changes prospectively in vivo. Although magnetic-resonance imaging (MRI) provid... Read More about Dual-modal magnetic resonance/fluorescent zinc probes for pancreatic β-cell mass imaging.

⁹⁹ᵐTc SPECT imaging agent based on cFLFLFK for the detection of FPR1 in inflammation (2015)
Journal Article
Stasiuk, G. J., Holloway, P. M., Rivas, C., Trigg, W., Luthra, S. K., Morrison Iveson, V., …Long, N. J. (2015). ⁹⁹ᵐTc SPECT imaging agent based on cFLFLFK for the detection of FPR1 in inflammation. Dalton Transactions : an international journal of inorganic chemistry, 44(11), 4986-4993. https://doi.org/10.1039/c4dt02980a

Non-invasive imaging of the inflammatory process can provide a great deal of insight into a wide variety of diseases states, aiding diagnosis, evaluation and effective targeted treatment. During inflammation, blood borne leukocytes are recruited, thr... Read More about ⁹⁹ᵐTc SPECT imaging agent based on cFLFLFK for the detection of FPR1 in inflammation.

Towards understanding the design of dual-modal MR/fluorescent probes to sense zinc ions (2014)
Journal Article
Rivas, C., Stasiuk, G. J., Sae-Heng, M., & Long, N. J. (2015). Towards understanding the design of dual-modal MR/fluorescent probes to sense zinc ions. Dalton Transactions : an international journal of inorganic chemistry, 44(11), 4976-4985. https://doi.org/10.1039/c4dt02981j

A series of gadolinium complexes were synthesised in order to test the design of dual-modal probes that display a change in fluorescence or relaxivity response upon binding of zinc. A dansyl-DO3ATA gadolinium complex [GdL1] displayed an increase and... Read More about Towards understanding the design of dual-modal MR/fluorescent probes to sense zinc ions.

Multimetallic complexes and functionalized gold nanoparticles based on a combination of d- and f-Elements (2014)
Journal Article
Stasiuk, G. J., Bell, J. D., Holmes, H., Sung, S., Toscani, A., Wainwright, L., …Wilton-Ely, J. D. E. T. (2014). Multimetallic complexes and functionalized gold nanoparticles based on a combination of d- and f-Elements. Inorganic chemistry, 53(4), 1989-2005. https://doi.org/10.1021/ic401936w

The new DO3A-derived dithiocarbamate ligand, DO3A-ᵗBu-CS₂K, is formed by treatment of the ammonium salt [DO3A-ᵗBu]HBr with K₂CO₃ and carbon disulfide. DO3A-ᵗBu-CS₂K reacts with the ruthenium complexes cis-[RuCl₂(dppm)₂] and [Ru(CH═CHC₆H₄Me-4)Cl(CO)(B... Read More about Multimetallic complexes and functionalized gold nanoparticles based on a combination of d- and f-Elements.

Lanthanide(III) complexes of rhodamine-DO3A conjugates as agents for dual-modal imaging (2013)
Journal Article
Rivas, C., Stasiuk, G. J., Gallo, J., Minuzzi, F., Rutter, G. A., & Long, N. J. (2013). Lanthanide(III) complexes of rhodamine-DO3A conjugates as agents for dual-modal imaging. Inorganic chemistry, 52(24), 14284-14293. https://doi.org/10.1021/ic402233g

Two novel dual-modal MRI/optical probes based on a rhodamine-DO3A conjugate have been prepared. The bis aqua-Gd(III) complex Gd.L1 and mono aqua-Gd(III) complex Gd.L2 behave as dual-modal imaging probes (r1 = 8.5 and 3.8 mM-1s-1 for Gd.L1 and Gd.L2 r... Read More about Lanthanide(III) complexes of rhodamine-DO3A conjugates as agents for dual-modal imaging.