All Outputs (21)

Pentablock thermoresponsive hydrogels for chemotherapeutic delivery in a pancreatic cancer model (2025)
Journal Article
Elsherbeny, A., Bayraktutan, H., Gumus, N., McCrorie, P., Garcia-Sampedro, A., Parmar, S., Ritchie, A. A., Meakin, M., Oz, U. C., Rahman, R., Ashworth, J. C., Grabowska, A. M., Moloney, C., & Alexander, C. (2025). Pentablock thermoresponsive hydrogels for chemotherapeutic delivery in a pancreatic cancer model. Biomaterials Science, 13(7), 1831-1848. https://doi.org/10.1039/d4bm01629g

The design of biodegradable and thermoresponsive polymeric hydrogels with tuneable properties holds immense promise for localised and sustained drug delivery. In this study, we designed and synthesised a library of novel pentablock copolymers, incorp... Read More about Pentablock thermoresponsive hydrogels for chemotherapeutic delivery in a pancreatic cancer model.

The role of mesenchymal cells in cholangiocarcinoma (2024)
Journal Article
Sueca-Comes, M., Rusu, E. C., Ashworth, J. C., Collier, P., Probert, C., Ritchie, A., Meakin, M., Mongan, N. P., Egbuniwe, I. U., Andersen, J. B., Bates, D. O., & Grabowska, A. M. (2024). The role of mesenchymal cells in cholangiocarcinoma. Disease Models and Mechanisms, 17(12), Article dmm050716. https://doi.org/10.1242/dmm.050716

The tumour microenvironment (TME) significantly influences tumour formation and progression through dynamic interactions. Cholangiocarcinoma (CCA), a highly desmoplastic tumour, lacks early diagnostic biomarkers and has limited effective treatments o... Read More about The role of mesenchymal cells in cholangiocarcinoma.

Modulation of the pre-metastatic bone niche: molecular changes mediated by bone-homing prostate cancer extracellular vesicles (2024)
Journal Article
Brown, T. J., Rutland, C. S., Rutland, C. S., Choi, K. K., Tse, F., Pfeffers, M. J., Peffers, M. J., Mongan, N. P., Arkill, K. P., Ritchie, A., Clarke, P. A., Ratan, H., Allegrucci, C., Grabowska, A. M., & James, V. (2024). Modulation of the pre-metastatic bone niche: molecular changes mediated by bone-homing prostate cancer extracellular vesicles. Frontiers in Cell and Developmental Biology, 12, Article 1354606. https://doi.org/10.3389/fcell.2024.1354606

Prostate cancer (PCa) is a leading male malignancy worldwide, often progressing to bone metastasis, with limited curative options. Extracellular vesicles (EVs) have emerged as key players in cancer communication and metastasis, promoting the formatio... Read More about Modulation of the pre-metastatic bone niche: molecular changes mediated by bone-homing prostate cancer extracellular vesicles.

Chain-extension in hyperbranched polymers alters tissue distribution and cytotoxicity profiles in orthotopic models of triple negative breast cancers (2023)
Journal Article
Moloney, C., Mehradnia, F., Cavanagh, R. J., Ibrahim, A., Pearce, A. K., Ritchie, A. A., Clarke, P., Rahman, R., Grabowska, A. M., & Alexander, C. (2023). Chain-extension in hyperbranched polymers alters tissue distribution and cytotoxicity profiles in orthotopic models of triple negative breast cancers. Biomaterials Science, 11, 6545-6560. https://doi.org/10.1039/d3bm00609c

The therapeutic efficacy of nanomedicines is highly dependent on their access to target sites in the body, and this in turn is markedly affected by their size, shape and transport properties in tissue. Although there have been many studies in this ar... Read More about Chain-extension in hyperbranched polymers alters tissue distribution and cytotoxicity profiles in orthotopic models of triple negative breast cancers.

Selective Killing of BRCA2-Deficient Ovarian Cancer Cells via MRE11 Blockade (2023)
Journal Article
Alblihy, A., Ali, R., Algethami, M., Ritchie, A. A., Shoqafi, A., Alqahtani, S., Mesquita, K. A., Toss, M. S., Ordóñez-Morán, P., Jeyapalan, J. N., Dekker, L., Salerno, M., Hartsuiker, E., Grabowska, A. M., Rakha, E. A., Mongan, N. P., & Madhusudan, S. (2023). Selective Killing of BRCA2-Deficient Ovarian Cancer Cells via MRE11 Blockade. International Journal of Molecular Sciences, 24(13), https://doi.org/10.3390/ijms241310966

The MRE11 nuclease is essential during DNA damage recognition, homologous recombination, and replication. BRCA2 plays important roles during homologous recombination and replication. Here, we show that effecting an MRE11 blockade using a prototypical... Read More about Selective Killing of BRCA2-Deficient Ovarian Cancer Cells via MRE11 Blockade.

Application of a 3D hydrogel-based model to replace use of animals for passaging patient-derived xenografts (2023)
Journal Article
Jones, S., Ashworth, J. C., Meakin, M., Collier, P., Probert, C., Ritchie, A. A., Merry, C. L. R., & Grabowska, A. M. (2023). Application of a 3D hydrogel-based model to replace use of animals for passaging patient-derived xenografts. In Vitro Models, 2(3-4), 99-111. https://doi.org/10.1007/s44164-023-00048-x

Purpose
This 3D in vitro cancer model for propagation of patient-derived cells, using a synthetic self-assembling peptide gel, allows the formation of a fully characterised, tailorable tumour microenvironment. Unlike many existing 3D cancer models,... Read More about Application of a 3D hydrogel-based model to replace use of animals for passaging patient-derived xenografts.

Clinically Translatable Transcrocetin Delivery Platform for Correction of Tumor Hypoxia and Enhancement of Radiation Therapy Effects (2023)
Journal Article
Diringer, M., Coliat, P., Mathieu, C., Laurent, N., Mura, C., Banerjee, M., Zhu, C., Grabowska, A., Ritchie, A., Clarke, P., Bernard, A., Vit, C., Burckel, H., Noel, G., Harvey, P., Pivot, X., & Detappe, A. (2023). Clinically Translatable Transcrocetin Delivery Platform for Correction of Tumor Hypoxia and Enhancement of Radiation Therapy Effects. Small, 19(12), Article 2205961. https://doi.org/10.1002/smll.202205961

Improving the tumor reoxygenation to sensitize the tumor to radiation therapy is a cornerstone in radiation oncology. Here, the pre‐clinical development of a clinically transferable liposomal formulation encapsulating trans sodium crocetinate (NP TSC... Read More about Clinically Translatable Transcrocetin Delivery Platform for Correction of Tumor Hypoxia and Enhancement of Radiation Therapy Effects.

Histopathological impact of Redox-responsive methacrylamide based micellar nanoparticles on Orthotopic Models of Triple Negative Breast Cancers (2022)
Journal Article
Mehradnia, F., Moloney, C., Cavanagh, R., Pearce, A. K., Ritchie, A., Clarke, P., Rahman, R., Ibrahim, A., Grabowskab, A. M., & Alexander, C. (2022). Histopathological impact of Redox-responsive methacrylamide based micellar nanoparticles on Orthotopic Models of Triple Negative Breast Cancers. British Journal of Pharmacy, 7(2), https://doi.org/10.5920/bjpharm.1173

The therapeutic efficacy of anticancer nanocarriers ishighly dependent on their size, shape, targeting ability, and stimuli-responsiveness. Herein, we studied the in vivo therapeutic efficacy ofDoxorubicin (Dox) loaded redox responsive micellar-like... Read More about Histopathological impact of Redox-responsive methacrylamide based micellar nanoparticles on Orthotopic Models of Triple Negative Breast Cancers.

Phosphodiesterase type 5 inhibitors enhance chemotherapy in preclinical models of esophageal adenocarcinoma by targeting cancer-associated fibroblasts (2022)
Journal Article
Sharpe, B. P., Hayden, A., Manousopoulou, A., Cowie, A., Walker, R. C., Harrington, J., Izadi, F., Breininger, S. P., Gibson, J., Pickering, O., Jaynes, E., Kyle, E., Saunders, J. H., Parsons, S. L., Ritchie, A. A., Clarke, P. A., Collier, P., Mongan, N. P., Bates, D. O., Yacqub-Usman, K., …Underwood, T. J. (2022). Phosphodiesterase type 5 inhibitors enhance chemotherapy in preclinical models of esophageal adenocarcinoma by targeting cancer-associated fibroblasts. Cell Reports Medicine, 3(6), Article 100541. https://doi.org/10.1016/j.xcrm.2022.100541

The chemotherapy resistance of esophageal adenocarcinomas (EACs) is underpinned by cancer cell extrinsic mechanisms of the tumor microenvironment (TME). We demonstrate that, by targeting the tumor-promoting functions of the predominant TME cell type,... Read More about Phosphodiesterase type 5 inhibitors enhance chemotherapy in preclinical models of esophageal adenocarcinoma by targeting cancer-associated fibroblasts.

Synthesis, characterisation and evaluation of hyperbranched N-(2-hydroxypropyl) methacrylamides for transport and delivery in pancreatic cell lines in vitro and in vivo (2022)
Journal Article
Anane-Adjei, A. B., Fletcher, N. L., Cavanagh, R. J., Houston, Z. H., Crawford, T., Pearce, A. K., Taresco, V., Ritchie, A. A., Clarke, P. A., Grabowska, A. M., Gellert, P. R., Ashford, M. B., Kellam, B., Thurecht, K. J., & Alexander, C. (2022). Synthesis, characterisation and evaluation of hyperbranched N-(2-hydroxypropyl) methacrylamides for transport and delivery in pancreatic cell lines in vitro and in vivo. Biomaterials Science, 10(9), 2328-2344. https://doi.org/10.1039/d1bm01548f

Hyperbranched polymers have many promising features for drug delivery, owing to their ease of synthesis, multiple functional group content, and potential for high drug loading with retention of solubility. Here we prepared hyperbranched N-(2-hydroxyp... Read More about Synthesis, characterisation and evaluation of hyperbranched N-(2-hydroxypropyl) methacrylamides for transport and delivery in pancreatic cell lines in vitro and in vivo.

Targeting hypoxia regulated sodium driven bicarbonate transporters reduces triple negative breast cancer metastasis (2022)
Journal Article
Harris, A. L., Clarke, P. A., Carroll, C. P., Bolland, H., Vancauwenberghe, E., Collier, P., Ritchie, A. A., Grabowska, A. M., & McIntyre, A. (2022). Targeting hypoxia regulated sodium driven bicarbonate transporters reduces triple negative breast cancer metastasis. Neoplasia, 25, 41-52. https://doi.org/10.1016/j.neo.2022.01.003

Regions of low oxygen (hypoxia) are found in >50% of breast tumours, most frequently in the more aggressive triple negative breast cancer subtype (TNBC). Metastasis is the cause of 90% of breast cancer patient deaths. Regions of tumour hypoxia tend t... Read More about Targeting hypoxia regulated sodium driven bicarbonate transporters reduces triple negative breast cancer metastasis.

METTL3 Regulates Angiogenesis by Modulating let-7e-5p and miRNA-18a-5p Expression in Endothelial Cells (2021)
Journal Article
Chamorro-Jorganes, A., Sweaad, W. K., Katare, R., Besnier, M., Anwar, M., Beazley-Long, N., Sala-Newby, G., Ruiz-Polo, I., Chandrasekera, D., Ritchie, A. A., Benest, A. V., & Emanueli, C. (2021). METTL3 Regulates Angiogenesis by Modulating let-7e-5p and miRNA-18a-5p Expression in Endothelial Cells. Arteriosclerosis, Thrombosis, and Vascular Biology, 41(6), e325-e337. https://doi.org/10.1161/atvbaha.121.316180

Objective:

Postnatal angiogenesis is critical in vascular homeostasis and repair. m6A RNA methylation is emerging as a new layer for fine-tuning gene expression. Although the contribution of the m6A-catalyzing enzyme, METTL3 (methyltransferase-lik... Read More about METTL3 Regulates Angiogenesis by Modulating let-7e-5p and miRNA-18a-5p Expression in Endothelial Cells.

Effects of Polymer 3D Architecture, Size, and Chemistry on Biological Transport and Drug Delivery In Vitro and in Orthotopic Triple Negative Breast Cancer Models (2020)
Journal Article
Anane‐Adjei, A. B., Pearce, A. K., Anane-Adjei, A. B., Cavanagh, R. J., Monteiro, P. F., Bennett, T. M., Taresco, V., Clarke, P. A., Ritchie, A. A., Alexander, M. R., Grabowska, A. M., & Alexander, C. (2020). Effects of Polymer 3D Architecture, Size, and Chemistry on Biological Transport and Drug Delivery In Vitro and in Orthotopic Triple Negative Breast Cancer Models. Advanced Healthcare Materials, 9(22), Article 2000892. https://doi.org/10.1002/adhm.202000892

© 2020 Wiley-VCH GmbH The size, shape, and underlying chemistries of drug delivery particles are key parameters which govern their ultimate performance in vivo. Responsive particles are desirable for triggered drug delivery, achievable through archit... Read More about Effects of Polymer 3D Architecture, Size, and Chemistry on Biological Transport and Drug Delivery In Vitro and in Orthotopic Triple Negative Breast Cancer Models.

Etoposide and olaparib polymer-coated nanoparticles within a bioadhesive sprayable hydrogel for post-surgical localised delivery to brain tumours (2020)
Journal Article
McCrorie, P., Mistry, J., Taresco, V., Lovato, T., Fay, M., Ward, I., Ritchie, A. A., Clarke, P. A., Smith, S. J., Marlow, M., & Rahman, R. (2020). Etoposide and olaparib polymer-coated nanoparticles within a bioadhesive sprayable hydrogel for post-surgical localised delivery to brain tumours. European Journal of Pharmaceutics and Biopharmaceutics, 157, 108-120. https://doi.org/10.1016/j.ejpb.2020.10.005

Glioblastoma is a malignant brain tumour with a median survival of 14.6 months from diagnosis. Despite maximal surgical resection and concurrent chemoradiotherapy, reoccurrence is inevitable. To try combating the disease at a stage of low residual tu... Read More about Etoposide and olaparib polymer-coated nanoparticles within a bioadhesive sprayable hydrogel for post-surgical localised delivery to brain tumours.

Synthesis of Passerini-3CR Polymers and Assembly into Cytocompatible Polymersomes (2020)
Journal Article
Travanut, A., Monteiro, P. F., Oelmann, S., Howdle, S. M., Grabowska, A. M., Clarke, P. A., Ritchie, A. A., Meier, M. A., & Alexander, C. (2021). Synthesis of Passerini-3CR Polymers and Assembly into Cytocompatible Polymersomes. Macromolecular Rapid Communications, 42(6), Article 2000321. https://doi.org/10.1002/marc.202000321

© 2020 The Authors. Published by Wiley-VCH GmbH The versatility of the Passerini three component reaction (Passerini-3CR) is herein exploited for the synthesis of an amphiphilic diblock copolymer, which self-assembles into polymersomes. Carboxy-funct... Read More about Synthesis of Passerini-3CR Polymers and Assembly into Cytocompatible Polymersomes.

A 3D Heterotypic Breast Cancer Model Demonstrates a Role for Mesenchymal Stem Cells in Driving a Proliferative and Invasive Phenotype (2020)
Journal Article
Pal, A., Ashworth, J. C., Collier, P., Probert, C., Jones, S., Leza, E. P., Meakin, M. L., A. Ritchie, A., Onion, D., Clarke, P. A., Allegrucci, C., & Grabowska, A. M. (2020). A 3D Heterotypic Breast Cancer Model Demonstrates a Role for Mesenchymal Stem Cells in Driving a Proliferative and Invasive Phenotype. Cancers, 12(8), Article 2290. https://doi.org/10.3390/cancers12082290

Functionalized block co-polymer pro-drug nanoparticles with anti-cancer efficacy in 3D spheroids and in an orthotopic triple negative breast cancer model (2020)
Journal Article
Taresco, V., Abelha, T. F., Cavanagh, R. J., Vasey, C. E., Anane-Adjei, A. B., Pearce, A. K., Monteiro, P. F., Spriggs, K. A., Clarke, P., Ritchie, A., Martin, S., Rahman, R., Grabowska, A. M., Ashford, M. B., & Alexander, C. (2021). Functionalized block co-polymer pro-drug nanoparticles with anti-cancer efficacy in 3D spheroids and in an orthotopic triple negative breast cancer model. Advanced Therapeutics, 4(1), Article 2000103. https://doi.org/10.1002/adtp.202000103

Amphiphilic block co-polymers composed of poly(ethylene glycol)-co-poly(lactide)-co-poly(2-((tert-butoxycarbonyl)amino)-3-propyl carbonate) (PEG-pLA-pTBPC) are synthesized in monomer ratios and arrangements to enable assembly into nanoparticles with... Read More about Functionalized block co-polymer pro-drug nanoparticles with anti-cancer efficacy in 3D spheroids and in an orthotopic triple negative breast cancer model.

Metabolism based isolation of invasive glioblastoma cells with specific gene signatures and tumorigenic potential (2020)
Journal Article
Smith, S. J., Rowlinson, J., Estevez-Cebrero, M., Onion, D., Ritchie, A., Clarke, P., Wood, K., Diksin, M., Lourdusamy, A., Grundy, R. G., & Rahman, R. (2020). Metabolism based isolation of invasive glioblastoma cells with specific gene signatures and tumorigenic potential. Neuro-Oncology Advances, 2(1), Article vdaa087. https://doi.org/10.1093/noajnl/vdaa087

Background
Glioblastoma (GBM) is a highly aggressive brain tumor with rapid subclonal diversification, harboring molecular abnormalities that vary temporo-spatially, a contributor to therapy resistance. Fluorescence guided neurosurgical resection ut... Read More about Metabolism based isolation of invasive glioblastoma cells with specific gene signatures and tumorigenic potential.

Overall survival in malignant glioma is significantly prolonged by neurosurgical delivery of etoposide and temozolomide from a thermo-responsive biodegradable paste (2019)
Journal Article
Smith, S. J., Tyler, B., Gould, T. W., Veal, G. J., Gorelick, N. L., Rowlinson, J., Serra, R., Ritchie, A. A., Berry, P., Otto, A., Choi, J., Skuli, N., Estevez-Cebrero, M. A., Shakesheff, K. M., Brem, H., Grundy, R. G., & Rahman, R. (2019). Overall survival in malignant glioma is significantly prolonged by neurosurgical delivery of etoposide and temozolomide from a thermo-responsive biodegradable paste. Clinical Cancer Research, 25(16), 5094-5106. https://doi.org/10.1158/1078-0432.ccr-18-3850

Purpose: High-grade glioma (HGG) treatment is limited by the inability of otherwise potentially efficacious drugs to penetrate the blood brain barrier. We evaluate the unique intra-cavity delivery mode and translational potential of a blend of poly(D... Read More about Overall survival in malignant glioma is significantly prolonged by neurosurgical delivery of etoposide and temozolomide from a thermo-responsive biodegradable paste.

Altered ratios of pro- and anti-angiogenic VEGF-A variants and pericyte expression of DLL4 disrupt the vascular maturation in infantile haemangioma (2016)
Journal Article
Ye, X., Abou-Rayyah, Y., Bischoff, J., Ritchie, A., Sebire, N. J., Watts, P., Churchill, A. J., & Bates, D. O. (in press). Altered ratios of pro- and anti-angiogenic VEGF-A variants and pericyte expression of DLL4 disrupt the vascular maturation in infantile haemangioma. Journal of Pathology, 239(2), https://doi.org/10.1002/path.4715

Infantile haemangioma (IH), the most common neoplasm in infants, is a slowly resolving vascular tumour. Vascular endothelial growth factor A (VEGF-A), which consists of both the pro- and anti-angiogenic variants, contributes to the pathogenesis of IH... Read More about Altered ratios of pro- and anti-angiogenic VEGF-A variants and pericyte expression of DLL4 disrupt the vascular maturation in infantile haemangioma.