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Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging (2023)
Journal Article
Linke, F., Johnson, J. E. C., Kern, S., Bennett, C. D., Lourdusamy, A., Lea, D., …Coyle, B. (2023). Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging. Acta Neuropathologica Communications, 11(1), Article 6. https://doi.org/10.1186/s40478-022-01496-4

The most common malignant brain tumour in children, medulloblastoma (MB), is subdivided into four clinically relevant molecular subgroups, although targeted therapy options informed by understanding of different cellular features are lacking. Here, b... Read More about Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging.

Meta-Analysis of Apparent Diffusion Coefficient in Pediatric Medulloblastoma, Ependymoma, and Pilocytic Astrocytoma (2021)
Journal Article
Dury, R. J., Lourdusamy, A., Macarthur, D. C., Peet, A. C., Auer, D. P., Grundy, R. G., & Dineen, R. A. (2022). Meta-Analysis of Apparent Diffusion Coefficient in Pediatric Medulloblastoma, Ependymoma, and Pilocytic Astrocytoma. Journal of Magnetic Resonance Imaging, 56(1), 147-157. https://doi.org/10.1002/jmri.28007

Background: Medulloblastoma, ependymoma, and pilocytic astrocytoma are common pediatric posterior fossa tumors. These tumors show overlapping characteristics on conventional MRI scans, making diagnosis difficult. Purpose: To investigate whether appar... Read More about Meta-Analysis of Apparent Diffusion Coefficient in Pediatric Medulloblastoma, Ependymoma, and Pilocytic Astrocytoma.

Modifying the m6A brain methylome by ALKBH5-mediated demethylation: a new contender for synaptic tagging (2021)
Journal Article
Martinez De La Cruz, B., Markus, R., Malla, S., Haig, M. I., Gell, C., Sang, F., …Knight, H. M. (2021). Modifying the m6A brain methylome by ALKBH5-mediated demethylation: a new contender for synaptic tagging. Molecular Psychiatry, 26(12), 7141-7153. https://doi.org/10.1038/s41380-021-01282-z

Synaptic plasticity processes, which underlie learning and memory formation, require RNA to be translated local to synapses. The synaptic tagging hypothesis has previously been proposed to explain how mRNAs are available at specific activated synapse... Read More about Modifying the m6A brain methylome by ALKBH5-mediated demethylation: a new contender for synaptic tagging.

CG7379 and ING1 suppress cancer cell invasion by maintaining cell–cell junction integrity (2021)
Journal Article
Rusu, A. D., Cornhill, Z. E., Coutiño, B. C., Uribe, M. C., Lourdusamy, A., Markus, Z., …Georgiou, M. (2021). CG7379 and ING1 suppress cancer cell invasion by maintaining cell–cell junction integrity. Open Biology, 11(9), Article 210077. https://doi.org/10.1098/rsob.210077

Approximately 90% of cancer-related deaths can be attributed to a tumour's ability to spread. We have identified CG7379, the fly orthologue of human ING1, as a potent invasion suppressor. ING1 is a type II tumour suppressor with well-established role... Read More about CG7379 and ING1 suppress cancer cell invasion by maintaining cell–cell junction integrity.

Intratumour heterogeneity in microRNAs expression regulates glioblastoma metabolism (2021)
Journal Article
Alfardus, H., de los Angeles Estevez Cebrero, M., Rowlinson, J., Lourdusamy, A., Abdelrazig, S., Ortori, C., …Smith, S. (2021). Intratumour heterogeneity in microRNAs expression regulates glioblastoma metabolism. Scientific Reports, 11(1), Article 15908. https://doi.org/10.1038/s41598-021-95289-9

While specific microRNA (miRNA) signatures have been identified in glioblastoma (GBM), the intratumour heterogeneity in miRNA expression has not yet been characterised. In this study, we reveal significant alterations in miRNA expression across three... Read More about Intratumour heterogeneity in microRNAs expression regulates glioblastoma metabolism.

Sequential Orbitrap Secondary Ion Mass Spectrometry and Liquid Extraction Surface Analysis-Tandem Mass Spectrometry-Based Metabolomics for Prediction of Brain Tumor Relapse from Sample-Limited Primary Tissue Archives (2021)
Journal Article
Meurs, J., Scurr, D. J., Lourdusamy, A., Storer, L. C., Grundy, R. G., Alexander, M. R., …Kim, D. (2021). Sequential Orbitrap Secondary Ion Mass Spectrometry and Liquid Extraction Surface Analysis-Tandem Mass Spectrometry-Based Metabolomics for Prediction of Brain Tumor Relapse from Sample-Limited Primary Tissue Archives. Analytical Chemistry, 93(18), 6947-6954. https://doi.org/10.1021/acs.analchem.0c05087

We present here a novel surface mass spectrometry strategy to perform untargeted metabolite profiling of formalin-fixed paraffin-embedded pediatric ependymoma archives. Sequential Orbitrap secondary ion mass spectrometry (3D OrbiSIMS) and liquid extr... Read More about Sequential Orbitrap Secondary Ion Mass Spectrometry and Liquid Extraction Surface Analysis-Tandem Mass Spectrometry-Based Metabolomics for Prediction of Brain Tumor Relapse from Sample-Limited Primary Tissue Archives.

Integrative molecular characterization of pediatric spinal ependymoma: the UK Children’s Cancer and Leukaemia Group study (2021)
Journal Article
Ahmad, O., Chapman, R., Storer, L. C., Luo, L., Heath, P. R., Resar, L., …Lourdusamy, A. (2021). Integrative molecular characterization of pediatric spinal ependymoma: the UK Children’s Cancer and Leukaemia Group study. Neuro-Oncology Advances, 3(1), 1-13. https://doi.org/10.1093/noajnl/vdab043

Background Pediatric spinal ependymomas (SP-EPNs) are rare primary central nervous system tumors with heterogeneous clinical course. Considering that ependymomas in children are biologically distinct from their adult counterparts, this study aimed t... Read More about Integrative molecular characterization of pediatric spinal ependymoma: the UK Children’s Cancer and Leukaemia Group study.

ABCB1 inhibition provides a novel therapeutic target to block TWIST1-induced migration in medulloblastoma (2021)
Journal Article
Nasir, A., Cardall, A., Othman, R. T., Nicolaou, N., Lourdusamy, A., Linke, F., …Coyle, B. (2021). ABCB1 inhibition provides a novel therapeutic target to block TWIST1-induced migration in medulloblastoma. Neuro-Oncology Advances, 3(1), https://doi.org/10.1093/noajnl/vdab030

Background: Therapeutic intervention in metastatic medulloblastoma is dependent upon elucidating the underlying metastatic mechanism. We investigated whether an epithelialmesenchymal transition (EMT)-like pathway could drive medulloblastoma metastasi... Read More about ABCB1 inhibition provides a novel therapeutic target to block TWIST1-induced migration in medulloblastoma.

Epen-23. A computational analysis of the tumour immune microenvironment in paediatric ependymoma (2020)
Journal Article
Ritzmann, T., Lourdusamy, A., Jackson, A., Storer, L., Donson, A., Griesinger, A., …Grundy, R. (2020). Epen-23. A computational analysis of the tumour immune microenvironment in paediatric ependymoma. Neuro-Oncology, 22(Supplement 3), iii312. https://doi.org/10.1093/neuonc/noaa222.160

Ependymoma is the third commonest childhood brain tumour. Relapse is frequent, often fatal and current therapeutic strategies are inadequate. Previous ependymoma research describes an immunosuppressive environment with T-cell exhaustion, indicating a... Read More about Epen-23. A computational analysis of the tumour immune microenvironment in paediatric ependymoma.

3D hydrogels reveal medulloblastoma subgroup differences and identify extracellular matrix subtypes that predict patient outcome (2020)
Journal Article
Linke, F., Aldighieri, M., Lourdusamy, A., Grabowska, A. M., Stolnik, S., Kerr, I. D., …Coyle, B. (2021). 3D hydrogels reveal medulloblastoma subgroup differences and identify extracellular matrix subtypes that predict patient outcome. Journal of Pathology, 253(3), 326-338. https://doi.org/10.1002/path.5591

© 2020 The Authors. The Journal of Pathology published by John Wiley & Sons, Ltd. on behalf of The Pathological Society of Great Britain and Ireland. Medulloblastoma (MB) is the most common malignant brain tumour in children and is subdivided into... Read More about 3D hydrogels reveal medulloblastoma subgroup differences and identify extracellular matrix subtypes that predict patient outcome.

TP53 abnormalities correlate with immune infiltration and associate with response to flotetuzumab immunotherapy in AML (2020)
Journal Article
Vadakekolathu, J., Lai, C., Reeder, S., Church, S. E., Hood, T., Lourdusamy, A., …Rutella, S. (2020). TP53 abnormalities correlate with immune infiltration and associate with response to flotetuzumab immunotherapy in AML. Blood Advances, 4(20), 5011-5024. https://doi.org/10.1182/bloodadvances.2020002512

Somatic TP53 mutations and 17p deletions with genomic loss of TP53 occur in 37% to 46% of acute myeloid leukemia (AML) with adverse-risk cytogenetics and correlate with primary induction failure, high risk of relapse, and dismal prognosis. Herein, we... Read More about TP53 abnormalities correlate with immune infiltration and associate with response to flotetuzumab immunotherapy in AML.

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., …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.

A Genetic Analysis of Tumor Progression in Drosophila Identifies the Cohesin Complex as a Suppressor of Individual and Collective Cell Invasion (2020)
Journal Article
Canales Coutino, B., Cornhill, Z. E., Couto, A., Mack, N. A., Rusu, A. D., Nagarajan, U., …Georgiou, M. (2020). A Genetic Analysis of Tumor Progression in Drosophila Identifies the Cohesin Complex as a Suppressor of Individual and Collective Cell Invasion. iScience, 23(6), Article 101237. https://doi.org/10.1016/j.isci.2020.101237

© 2020 The Authors Metastasis is the leading cause of death for patients with cancer. Consequently it is imperative that we improve our understanding of the molecular mechanisms that underlie progression of tumor growth toward malignancy. Advances in... Read More about A Genetic Analysis of Tumor Progression in Drosophila Identifies the Cohesin Complex as a Suppressor of Individual and Collective Cell Invasion.

FLYWCH1, a novel suppressor of nuclear b-catenin, regulates migration and morphology in colorectal cancer (2018)
Journal Article
Muhammad, B. A., Almozyan, S., Babaei-Jadidi, R., Onyido, E. K., Saadeddin, A., Kashfi, S. H., …Nateri, A. S. (2018). FLYWCH1, a novel suppressor of nuclear b-catenin, regulates migration and morphology in colorectal cancer. Molecular Cancer Research, 16(12), 1977-1990. https://doi.org/10.1158/1541-7786.MCR-18-0262

© 2018 American Association for Cancer Research. Wnt/b-catenin signaling plays a critical role during development of both normal and malignant colorectal cancer tissues. Phosphorylation of b-catenin protein alters its trafficking and function. Such c... Read More about FLYWCH1, a novel suppressor of nuclear b-catenin, regulates migration and morphology in colorectal cancer.

Transcriptomic analysis in pediatric spinal ependymoma reveals distinct molecular signatures (2017)
Journal Article
Lourdusamy, A., Luo, L. Z., Storer, L. C., Cohen, K. J., Resar, L., & Grundy, R. G. (2017). Transcriptomic analysis in pediatric spinal ependymoma reveals distinct molecular signatures. Oncotarget, 8(70), https://doi.org/10.18632/oncotarget.23311

Pediatric spinal ependymomas (SEPN) are important albeit uncommon malignant central nervous system tumors with limited treatment options. Our current knowledge about the underlying biology of these tumors is limited due to their rarity. To begin to e... Read More about Transcriptomic analysis in pediatric spinal ependymoma reveals distinct molecular signatures.

Association of Protein Phosphatase PPM1G With Alcohol Use Disorder and Brain Activity During Behavioral Control in a Genome-Wide Methylation Analysis (2015)
Journal Article
Ruggeri, B., Nymberg, C., Vuoksimaa, E., Lourdusamy, A., Wong, C. P., Carvalho, F. M., …Schumann, G. (2015). Association of Protein Phosphatase PPM1G With Alcohol Use Disorder and Brain Activity During Behavioral Control in a Genome-Wide Methylation Analysis. American Journal of Psychiatry, 172(6), 543-552. https://doi.org/10.1176/appi.ajp.2014.14030382

Objective: The genetic component of alcohol use disorder is substantial, but monozygotic twin discordance indicates a role for nonheritable differences that could be mediated by epigenetics. Despite growing evidence associating epigenetics and psychi... Read More about Association of Protein Phosphatase PPM1G With Alcohol Use Disorder and Brain Activity During Behavioral Control in a Genome-Wide Methylation Analysis.

Expression alterations define unique molecular characteristics of spinal ependymomas (2015)
Journal Article
Lourdusamy, A., Rahman, R., & Grundy, R. G. (2015). Expression alterations define unique molecular characteristics of spinal ependymomas. Oncotarget, 6(23), https://doi.org/10.18632/oncotarget.3715

Ependymomas are glial tumors that originate in either intracranial or spinal regions. Although tumors from different regions are histologically similar, they are biologically distinct. We therefore sought to identify molecular characteristics of spin... Read More about Expression alterations define unique molecular characteristics of spinal ependymomas.

Dissecting DNA repair in adult high grade gliomas for patient stratification in the post-genomic era (2014)
Journal Article
Perry, C., Agarwal, D., Abdel-Fatah, T. M., Lourdusamy, A., Grundy, R., Auer, D. T., …Madhusudan, S. (2014). Dissecting DNA repair in adult high grade gliomas for patient stratification in the post-genomic era. Oncotarget, 5(14), 5764-5781. https://doi.org/10.18632/oncotarget.2180

Deregulation of multiple DNA repair pathways may contribute to aggressive biology and therapy resistance in gliomas. We evaluated transcript levels of 157 genes involved in DNA repair in an adult glioblastoma Test set (n=191) and validated in ‘The Ca... Read More about Dissecting DNA repair in adult high grade gliomas for patient stratification in the post-genomic era.