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Joh-Carnella N, Bauman G, Yock TI, Zelcer S, Youkhanna S, Cacciotti C. Case report: Pediatric low-grade gliomas: a fine balance between treatment options, timing of therapy, symptom management and quality of life. Front Oncol 2024; 14:1366251. [PMID: 38912055 PMCID: PMC11190070 DOI: 10.3389/fonc.2024.1366251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 05/28/2024] [Indexed: 06/25/2024] Open
Abstract
Introduction Pediatric low-grade gliomas (pLGG) are the most common brain tumor in children and encompass a wide range of histologies. Treatment may pose challenges, especially in those incompletely resected or those with multiple recurrence or progression. Case description We report the clinical course of a girl diagnosed with pilocytic astrocytoma and profound hydrocephalus at age 12 years treated with subtotal resection, vinblastine chemotherapy, and focal proton radiotherapy. After radiotherapy the tumor increased in enhancement temporarily with subsequent resolution consistent with pseudoprogression. Despite improvement in imaging and radiographic local control, the patient continues to have challenges with headaches, visual and auditory concerns, stroke-like symptoms, and poor quality of life. Conclusion pLGG have excellent long-term survival; thus, treatments should focus on maintaining disease control and limiting long-term toxicities. Various treatment options exist including surgery, chemotherapy, targeted agents, and radiation therapy. Given the morbidity associated with pLGG, individualized treatment approaches are necessary, with a multi-disciplinary approach to care focused on minimizing treatment side effects, and promoting optimal quality of life for patients.
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Affiliation(s)
| | - Glenn Bauman
- Division of Radiation Oncology, Department of Oncology, London Health Sciences Centre & Western University, London, ON, Canada
| | - Torunn I. Yock
- Department of Pediatric Radiation Oncology, Massachusetts General Hospital, Boston, MA, United States
| | - Shayna Zelcer
- Division of Hematology/Oncology, Department of Pediatrics, London Health Sciences Centre & Western University, London, ON, Canada
| | - Sabin Youkhanna
- Department Radiation Oncology, London Regional Cancer Centre, London, ON, Canada
| | - Chantel Cacciotti
- Division of Hematology/Oncology, Department of Pediatrics, London Health Sciences Centre & Western University, London, ON, Canada
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Robinson SD, Samuels M, Jones W, Gilbert D, Critchley G, Giamas G. Shooting the messenger: a systematic review investigating extracellular vesicle isolation and characterisation methods and their influence on understanding extracellular vesicles-radiotherapy interactions in glioblastoma. BMC Cancer 2023; 23:939. [PMID: 37798728 PMCID: PMC10552223 DOI: 10.1186/s12885-023-11437-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Extracellular vesicles (EVs) hold promise for improving our understanding of radiotherapy response in glioblastoma due to their role in intercellular communication within the tumour microenvironment (TME). However, methodologies to study EVs are evolving with significant variation within the EV research community. METHODS We conducted a systematic review to critically appraise EV isolation and characterisation methodologies and how this influences our understanding of the findings from studies investigating radiotherapy and EV interactions in glioblastoma. 246 articles published up to 24/07/2023 from PubMed and Web of Science were identified using search parameters related to radiotherapy, EVs, and glioblastoma. Two reviewers evaluated study eligibility and abstracted data. RESULTS In 26 articles eligible for inclusion (16 investigating the effects of radiotherapy on EVs, five investigating the effect of EVs on radiation response, and five clinical studies), significant heterogeneity and frequent omission of key characterisation steps was identified, reducing confidence that the results are related to EVs and their cargo as opposed to co-isolated bioactive molecules. However, the results are able to clearly identify interactions between EVs and radiotherapy bi-directionally within different cell types within the glioblastoma TME. These interactions facilitate transferable radioresistance and oncogenic signalling, highlighting that EVs are an important component in the variability of glioblastoma radiotherapy response. CONCLUSIONS Future multi-directional investigations interrogating the whole TME are required to improve subsequent clinical translation, and all studies should incorporate up to date controls and reporting requirements to increase the validity of their findings. This would be facilitated by increased collaboration between less experienced and more experienced EV research groups.
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Affiliation(s)
- Stephen David Robinson
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, John Maynard Smith Building, Falmer, Brighton, BN1 9QG, UK, (SDR, MS, WJ, GG).
- Sussex Cancer Centre, University Hospitals Sussex NHS Foundation Trust, Brighton, UK, (SDR, DG).
| | - Mark Samuels
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, John Maynard Smith Building, Falmer, Brighton, BN1 9QG, UK, (SDR, MS, WJ, GG)
| | - William Jones
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, John Maynard Smith Building, Falmer, Brighton, BN1 9QG, UK, (SDR, MS, WJ, GG)
| | - Duncan Gilbert
- Sussex Cancer Centre, University Hospitals Sussex NHS Foundation Trust, Brighton, UK, (SDR, DG)
- Medical Research Council Clinical Trials Unit, University College London, London, UK, (DG)
| | - Giles Critchley
- Department of Neurosurgery, University Hospitals Sussex NHS Foundation Trust, Brighton, UK, (GC)
| | - Georgios Giamas
- Department of Biochemistry and Biomedicine, School of Life Sciences, University of Sussex, John Maynard Smith Building, Falmer, Brighton, BN1 9QG, UK, (SDR, MS, WJ, GG)
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Hersh AM, Alomari S, Tyler BM. Crossing the Blood-Brain Barrier: Advances in Nanoparticle Technology for Drug Delivery in Neuro-Oncology. Int J Mol Sci 2022; 23:4153. [PMID: 35456971 PMCID: PMC9032478 DOI: 10.3390/ijms23084153] [Citation(s) in RCA: 75] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 12/10/2022] Open
Abstract
The blood-brain barrier (BBB) constitutes a microvascular network responsible for excluding most drugs from the brain. Treatment of brain tumors is limited by the impermeability of the BBB and, consequently, survival outcomes for malignant brain tumors remain poor. Nanoparticles (NPs) represent a potential solution to improve drug transport to brain tumors, given their small size and capacity to target tumor cells. Here, we review the unique physical and chemical properties of NPs that aid in BBB transport and discuss mechanisms of NP transport across the BBB, including paracellular transport, carrier-mediated transport, and adsorptive- and receptor-mediated transcytosis. The major types of NPs investigated for treatment of brain tumors are detailed, including polymeric NPs, liposomes, solid lipid NPs, dendrimers, metals, quantum dots, and nanogels. In addition to their role in drug delivery, NPs can be used as imaging contrast agents and can be conjugated with imaging probes to assist in visualizing tumors, demarcating lesion boundaries and margins, and monitoring drug delivery and treatment response. Multifunctional NPs can be designed that are capable of targeting tumors for both imaging and therapeutic purposes. Finally, limitations of NPs for brain tumor treatment are discussed.
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Affiliation(s)
| | | | - Betty M. Tyler
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; (A.M.H.); (S.A.)
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Cruz Da Silva E, Mercier MC, Etienne-Selloum N, Dontenwill M, Choulier L. A Systematic Review of Glioblastoma-Targeted Therapies in Phases II, III, IV Clinical Trials. Cancers (Basel) 2021; 13:1795. [PMID: 33918704 PMCID: PMC8069979 DOI: 10.3390/cancers13081795] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/19/2021] [Accepted: 03/26/2021] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma (GBM), the most frequent and aggressive glial tumor, is currently treated as first line by the Stupp protocol, which combines, after surgery, radiotherapy and chemotherapy. For recurrent GBM, in absence of standard treatment or available clinical trials, various protocols including cytotoxic drugs and/or bevacizumab are currently applied. Despite these heavy treatments, the mean overall survival of patients is under 18 months. Many clinical studies are underway. Based on clinicaltrials.org and conducted up to 1 April 2020, this review lists, not only main, but all targeted therapies in phases II-IV of 257 clinical trials on adults with newly diagnosed or recurrent GBMs for the last twenty years. It does not involve targeted immunotherapies and therapies targeting tumor cell metabolism, that are well documented in other reviews. Without surprise, the most frequently reported drugs are those targeting (i) EGFR (40 clinical trials), and more generally tyrosine kinase receptors (85 clinical trials) and (ii) VEGF/VEGFR (75 clinical trials of which 53 involving bevacizumab). But many other targets and drugs are of interest. They are all listed and thoroughly described, on an one-on-one basis, in four sections related to targeting (i) GBM stem cells and stem cell pathways, (ii) the growth autonomy and migration, (iii) the cell cycle and the escape to cell death, (iv) and angiogenesis.
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Affiliation(s)
- Elisabete Cruz Da Silva
- CNRS, UMR 7021, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, 67401 Illkirch, France; (E.C.D.S.); (M.-C.M.); (N.E.-S.); (M.D.)
| | - Marie-Cécile Mercier
- CNRS, UMR 7021, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, 67401 Illkirch, France; (E.C.D.S.); (M.-C.M.); (N.E.-S.); (M.D.)
| | - Nelly Etienne-Selloum
- CNRS, UMR 7021, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, 67401 Illkirch, France; (E.C.D.S.); (M.-C.M.); (N.E.-S.); (M.D.)
- Service de Pharmacie, Institut de Cancérologie Strasbourg Europe, 67200 Strasbourg, France
| | - Monique Dontenwill
- CNRS, UMR 7021, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, 67401 Illkirch, France; (E.C.D.S.); (M.-C.M.); (N.E.-S.); (M.D.)
| | - Laurence Choulier
- CNRS, UMR 7021, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, Université de Strasbourg, 67401 Illkirch, France; (E.C.D.S.); (M.-C.M.); (N.E.-S.); (M.D.)
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