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Marafie SK, Al-Mulla F, Abubaker J. mTOR: Its Critical Role in Metabolic Diseases, Cancer, and the Aging Process. Int J Mol Sci 2024; 25:6141. [PMID: 38892329 PMCID: PMC11173325 DOI: 10.3390/ijms25116141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/26/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The mammalian target of rapamycin (mTOR) is a pivotal regulator, integrating diverse environmental signals to control fundamental cellular functions, such as protein synthesis, cell growth, survival, and apoptosis. Embedded in a complex network of signaling pathways, mTOR dysregulation is implicated in the onset and progression of a range of human diseases, including metabolic disorders such as diabetes and cardiovascular diseases, as well as various cancers. mTOR also has a notable role in aging. Given its extensive biological impact, mTOR signaling is a prime therapeutic target for addressing these complex conditions. The development of mTOR inhibitors has proven advantageous in numerous research domains. This review delves into the significance of mTOR signaling, highlighting the critical components of this intricate network that contribute to disease. Additionally, it addresses the latest findings on mTOR inhibitors and their clinical implications. The review also emphasizes the importance of developing more effective next-generation mTOR inhibitors with dual functions to efficiently target the mTOR pathways. A comprehensive understanding of mTOR signaling will enable the development of effective therapeutic strategies for managing diseases associated with mTOR dysregulation.
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Affiliation(s)
- Sulaiman K. Marafie
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait
| | - Fahd Al-Mulla
- Department of Translational Research, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait;
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait
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2
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Shen Y, Thng DKH, Wong ALA, Toh TB. Mechanistic insights and the clinical prospects of targeted therapies for glioblastoma: a comprehensive review. Exp Hematol Oncol 2024; 13:40. [PMID: 38615034 PMCID: PMC11015656 DOI: 10.1186/s40164-024-00512-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 04/08/2024] [Indexed: 04/15/2024] Open
Abstract
Glioblastoma (GBM) is a fatal brain tumour that is traditionally diagnosed based on histological features. Recent molecular profiling studies have reshaped the World Health Organization approach in the classification of central nervous system tumours to include more pathogenetic hallmarks. These studies have revealed that multiple oncogenic pathways are dysregulated, which contributes to the aggressiveness and resistance of GBM. Such findings have shed light on the molecular vulnerability of GBM and have shifted the disease management paradigm from chemotherapy to targeted therapies. Targeted drugs have been developed to inhibit oncogenic targets in GBM, including receptors involved in the angiogenic axis, the signal transducer and activator of transcription 3 (STAT3), the PI3K/AKT/mTOR signalling pathway, the ubiquitination-proteasome pathway, as well as IDH1/2 pathway. While certain targeted drugs showed promising results in vivo, the translatability of such preclinical achievements in GBM remains a barrier. We also discuss the recent developments and clinical assessments of targeted drugs, as well as the prospects of cell-based therapies and combinatorial therapy as novel ways to target GBM. Targeted treatments have demonstrated preclinical efficacy over chemotherapy as an alternative or adjuvant to the current standard of care for GBM, but their clinical efficacy remains hindered by challenges such as blood-brain barrier penetrance of the drugs. The development of combinatorial targeted therapies is expected to improve therapeutic efficacy and overcome drug resistance.
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Affiliation(s)
- Yating Shen
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Dexter Kai Hao Thng
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Andrea Li Ann Wong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Department of Haematology-Oncology, National University Hospital, Singapore, Singapore
| | - Tan Boon Toh
- The N.1 Institute for Health (N.1), National University of Singapore, Singapore, Singapore.
- The Institute for Digital Medicine (WisDM), National University of Singapore, Singapore, Singapore.
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3
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Singh RR, Mondal I, Janjua T, Popat A, Kulshreshtha R. Engineered smart materials for RNA based molecular therapy to treat Glioblastoma. Bioact Mater 2024; 33:396-423. [PMID: 38059120 PMCID: PMC10696434 DOI: 10.1016/j.bioactmat.2023.11.007] [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: 04/25/2023] [Revised: 10/19/2023] [Accepted: 11/14/2023] [Indexed: 12/08/2023] Open
Abstract
Glioblastoma (GBM) is an aggressive malignancy of the central nervous system (CNS) that remains incurable despite the multitude of improvements in cancer therapeutics. The conventional chemo and radiotherapy post-surgery have only been able to improve the prognosis slightly; however, the development of resistance and/or tumor recurrence is almost inevitable. There is a pressing need for adjuvant molecular therapies that can successfully and efficiently block tumor progression. During the last few decades, non-coding RNAs (ncRNAs) have emerged as key players in regulating various hallmarks of cancer including that of GBM. The levels of many ncRNAs are dysregulated in cancer, and ectopic modulation of their levels by delivering antagonists or overexpression constructs could serve as an attractive option for cancer therapy. The therapeutic potential of several types of ncRNAs, including miRNAs, lncRNAs, and circRNAs, has been validated in both in vitro and in vivo models of GBM. However, the delivery of these RNA-based therapeutics is highly challenging, especially to the tumors of the brain as the blood-brain barrier (BBB) poses as a major obstacle, among others. Also, since RNA is extremely fragile in nature, careful considerations must be met while designing a delivery agent. In this review we have shed light on how ncRNA therapy can overcome the limitations of its predecessor conventional therapy with an emphasis on smart nanomaterials that can aide in the safe and targeted delivery of nucleic acids to treat GBM. Additionally, critical gaps that currently exist for successful transition from viral to non-viral vector delivery systems have been identified. Finally, we have provided a perspective on the future directions, potential pathways, and target areas for achieving rapid clinical translation of, RNA-based macromolecular therapy to advance the effective treatment of GBM and other related diseases.
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Affiliation(s)
- Ravi Raj Singh
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
- School of Pharmacy, The University of Queensland, Brisbane, QLD, 4072, Australia
- University of Queensland –IIT Delhi Academy of Research (UQIDAR)
| | - Indranil Mondal
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | - Taskeen Janjua
- School of Pharmacy, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, Brisbane, QLD, 4072, Australia
- Department of Functional Materials and Catalysis, Faculty of Chemistry, University of Vienna, Währinger Straße 42, 1090 Vienna, Austria
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
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Jhanwar-Uniyal M, Zeller SL, Spirollari E, Das M, Hanft SJ, Gandhi CD. Discrete Mechanistic Target of Rapamycin Signaling Pathways, Stem Cells, and Therapeutic Targets. Cells 2024; 13:409. [PMID: 38474373 DOI: 10.3390/cells13050409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
The mechanistic target of rapamycin (mTOR) is a serine/threonine kinase that functions via its discrete binding partners to form two multiprotein complexes, mTOR complex 1 and 2 (mTORC1 and mTORC2). Rapamycin-sensitive mTORC1, which regulates protein synthesis and cell growth, is tightly controlled by PI3K/Akt and is nutrient-/growth factor-sensitive. In the brain, mTORC1 is also sensitive to neurotransmitter signaling. mTORC2, which is modulated by growth factor signaling, is associated with ribosomes and is insensitive to rapamycin. mTOR regulates stem cell and cancer stem cell characteristics. Aberrant Akt/mTOR activation is involved in multistep tumorigenesis in a variety of cancers, thereby suggesting that the inhibition of mTOR may have therapeutic potential. Rapamycin and its analogues, known as rapalogues, suppress mTOR activity through an allosteric mechanism that only suppresses mTORC1, albeit incompletely. ATP-catalytic binding site inhibitors are designed to inhibit both complexes. This review describes the regulation of mTOR and the targeting of its complexes in the treatment of cancers, such as glioblastoma, and their stem cells.
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Affiliation(s)
- Meena Jhanwar-Uniyal
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
| | - Sabrina L Zeller
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
| | - Eris Spirollari
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
| | - Mohan Das
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
| | - Simon J Hanft
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
| | - Chirag D Gandhi
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY 10595, USA
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Obrador E, Moreno-Murciano P, Oriol-Caballo M, López-Blanch R, Pineda B, Gutiérrez-Arroyo JL, Loras A, Gonzalez-Bonet LG, Martinez-Cadenas C, Estrela JM, Marqués-Torrejón MÁ. Glioblastoma Therapy: Past, Present and Future. Int J Mol Sci 2024; 25:2529. [PMID: 38473776 DOI: 10.3390/ijms25052529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/10/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Glioblastoma (GB) stands out as the most prevalent and lethal form of brain cancer. Although great efforts have been made by clinicians and researchers, no significant improvement in survival has been achieved since the Stupp protocol became the standard of care (SOC) in 2005. Despite multimodality treatments, recurrence is almost universal with survival rates under 2 years after diagnosis. Here, we discuss the recent progress in our understanding of GB pathophysiology, in particular, the importance of glioma stem cells (GSCs), the tumor microenvironment conditions, and epigenetic mechanisms involved in GB growth, aggressiveness and recurrence. The discussion on therapeutic strategies first covers the SOC treatment and targeted therapies that have been shown to interfere with different signaling pathways (pRB/CDK4/RB1/P16ink4, TP53/MDM2/P14arf, PI3k/Akt-PTEN, RAS/RAF/MEK, PARP) involved in GB tumorigenesis, pathophysiology, and treatment resistance acquisition. Below, we analyze several immunotherapeutic approaches (i.e., checkpoint inhibitors, vaccines, CAR-modified NK or T cells, oncolytic virotherapy) that have been used in an attempt to enhance the immune response against GB, and thereby avoid recidivism or increase survival of GB patients. Finally, we present treatment attempts made using nanotherapies (nanometric structures having active anti-GB agents such as antibodies, chemotherapeutic/anti-angiogenic drugs or sensitizers, radionuclides, and molecules that target GB cellular receptors or open the blood-brain barrier) and non-ionizing energies (laser interstitial thermal therapy, high/low intensity focused ultrasounds, photodynamic/sonodynamic therapies and electroporation). The aim of this review is to discuss the advances and limitations of the current therapies and to present novel approaches that are under development or following clinical trials.
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Affiliation(s)
- Elena Obrador
- Scientia BioTech S.L., 46002 Valencia, Spain
- Department of Physiology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
| | | | - María Oriol-Caballo
- Scientia BioTech S.L., 46002 Valencia, Spain
- Department of Physiology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
| | - Rafael López-Blanch
- Scientia BioTech S.L., 46002 Valencia, Spain
- Department of Physiology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
| | - Begoña Pineda
- Department of Physiology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
| | | | - Alba Loras
- Department of Medicine, Jaume I University of Castellon, 12071 Castellon, Spain
| | - Luis G Gonzalez-Bonet
- Department of Neurosurgery, Castellon General University Hospital, 12004 Castellon, Spain
| | | | - José M Estrela
- Scientia BioTech S.L., 46002 Valencia, Spain
- Department of Physiology, Faculty of Medicine and Odontology, University of Valencia, 46010 Valencia, Spain
- Department of Physiology, Faculty of Pharmacy, University of Valencia, 46100 Burjassot, Spain
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Abstract
Major depressive disorder (MDD) is a leading cause of suicide in the world. Monoamine-based antidepressant drugs are a primary line of treatment for this mental disorder, although the delayed response and incomplete efficacy in some patients highlight the need for improved therapeutic approaches. Over the past two decades, ketamine has shown rapid onset with sustained (up to several days) antidepressant effects in patients whose MDD has not responded to conventional antidepressant drugs. Recent preclinical studies have started to elucidate the underlying mechanisms of ketamine's antidepressant properties. Herein, we describe and compare recent clinical and preclinical findings to provide a broad perspective of the relevant mechanisms for the antidepressant action of ketamine.
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Affiliation(s)
- Ji-Woon Kim
- Department of Pharmacology, School of Medicine, Vanderbilt University, Nashville, Tennessee, USA;
- College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
- Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Institute of Regulatory Innovation through Science, Kyung Hee University, Seoul, Republic of Korea
| | - Kanzo Suzuki
- Department of Pharmacology, School of Medicine, Vanderbilt University, Nashville, Tennessee, USA;
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Ege T Kavalali
- Department of Pharmacology, School of Medicine, Vanderbilt University, Nashville, Tennessee, USA;
| | - Lisa M Monteggia
- Department of Pharmacology, School of Medicine, Vanderbilt University, Nashville, Tennessee, USA;
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Cai J, Xie D, Kong F, Zhai Z, Zhu Z, Zhao Y, Xu Y, Sun T. Effect and Mechanism of Rapamycin on Cognitive Deficits in Animal Models of Alzheimer's Disease: A Systematic Review and Meta-analysis of Preclinical Studies. J Alzheimers Dis 2024; 99:53-84. [PMID: 38640155 DOI: 10.3233/jad-231249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
Background Alzheimer's disease (AD), the most common form of dementia, remains long-term and challenging to diagnose. Furthermore, there is currently no medication to completely cure AD patients. Rapamycin has been clinically demonstrated to postpone the aging process in mice and improve learning and memory abilities in animal models of AD. Therefore, rapamycin has the potential to be significant in the discovery and development of drugs for AD patients. Objective The main objective of this systematic review and meta-analysis was to investigate the effects and mechanisms of rapamycin on animal models of AD by examining behavioral indicators and pathological features. Methods Six databases were searched and 4,277 articles were retrieved. In conclusion, 13 studies were included according to predefined criteria. Three authors independently judged the selected literature and methodological quality. Use of subgroup analyses to explore potential mechanistic effects of rapamycin interventions: animal models of AD, specific types of transgenic animal models, dosage, and periodicity of administration. Results The results of Morris Water Maze (MWM) behavioral test showed that escape latency was shortened by 15.60 seconds with rapamycin therapy, indicating that learning ability was enhanced in AD mice; and the number of traversed platforms was increased by 1.53 times, indicating that the improved memory ability significantly corrected the memory deficits. CONCLUSIONS Rapamycin therapy reduced age-related plaque deposition by decreasing AβPP production and down-regulating β-secretase and γ-secretase activities, furthermore increased amyloid-β clearance by promoting autophagy, as well as reduced tau hyperphosphorylation by up-regulating insulin-degrading enzyme levels.
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Affiliation(s)
- Jie Cai
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Danni Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Fanjing Kong
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Zhenwei Zhai
- School of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Zhishan Zhu
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yanru Zhao
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Ying Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Tao Sun
- School of Intelligent Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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8
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Zhang NN, Ban YJ, Wang YJ, He SY, Qi PP, Bi T, Ma YF, Dong YX, Guo B, Weng J, Li HL, Tang L, Zhang JQ. Virtual screening of novel mTOR inhibitors for the potential treatment of human colorectal cancer. Bioorg Chem 2023; 140:106781. [PMID: 37597440 DOI: 10.1016/j.bioorg.2023.106781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/04/2023] [Accepted: 08/08/2023] [Indexed: 08/21/2023]
Abstract
The abnormal activation of the mTOR pathway is closely related to the occurrence and progression of cancer, especially colorectal cancer. In this study, a rational virtual screening strategy has been established and MT-5, a novel mTOR inhibitor with a quinoline scaffold, was obtained from the ChemDiv database. MT-5 showed potent kinase inhibitory activity (IC50: 8.90 μM) and antiproliferative effects against various cancer cell lines, especially HCT-116 cells (IC50: 4.61 μM), and this was 2.2-fold more potent than that of the cisplatin control (IC50: 9.99 μM). Western blot, cell migration, cycle arrest, and apoptosis assays were performed with HCT-116 cells to investigate the potential anticancer mechanism of MT-5. Metabolic stability results in vitro indicated that MT-5 exhibited good stability profiles in artificial gastrointestinal fluids, rat plasma, and liver microsomes. In addition, the key contribution of the residues around the binding pocket of MT-5 in binding to the mTOR protein was also investigated from a computational perspective.
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Affiliation(s)
- Na-Na Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Yu-Juan Ban
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Yu-Jie Wang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Si-Yu He
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Pan-Pan Qi
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Ting Bi
- The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Yi-Fei Ma
- The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Yong-Xi Dong
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang 550025, China
| | - Jiang Weng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Hong-Liang Li
- School of Medicine, Yunnan University, 2 Cuihu North Road, Kunming 650091, China
| | - Lei Tang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China
| | - Ji-Quan Zhang
- Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, College of Pharmacy, Guizhou Medical University, Guiyang 550025, China.
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Zeng J, Zeng XX. Systems Medicine for Precise Targeting of Glioblastoma. Mol Biotechnol 2023; 65:1565-1584. [PMID: 36859639 PMCID: PMC9977103 DOI: 10.1007/s12033-023-00699-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 02/14/2023] [Indexed: 03/03/2023]
Abstract
Glioblastoma (GBM) is a malignant cancer that is fatal even after standard therapy and the effects of current available therapeutics are not promising due its complex and evolving epigenetic and genetic profile. The mysteries that lead to GBM intratumoral heterogeneity and subtype transitions are not entirely clear. Systems medicine is an approach to view the patient in a whole picture integrating systems biology and synthetic biology along with computational techniques. Since the GBM oncogenesis involves genetic mutations, various therapies including gene therapeutics based on CRISPR-Cas technique, MicroRNAs, and implanted synthetic cells endowed with synthetic circuits against GBM with neural stem cells and mesenchymal stem cells acting as potential vehicles carrying therapeutics via the intranasal route, avoiding the risks of invasive methods in order to reach the GBM cells in the brain are discussed and proposed in this review. Systems medicine approach is a rather novel strategy, and since the GBM of a patient is complex and unique, thus to devise an individualized treatment strategy to tailor personalized multimodal treatments for the individual patient taking into account the phenotype of the GBM, the unique body health profile of the patient and individual responses according to the systems medicine concept might show potential to achieve optimum effects.
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Affiliation(s)
- Jie Zeng
- Benjoe Institute of Systems Bio-Engineering, High Technology Park, Xinbei District, Changzhou, 213022 Jiangsu People’s Republic of China
| | - Xiao Xue Zeng
- Department of Health Management, Centre of General Practice, The Seventh Affiliated Hospital, Southern Medical University, No. 28, Desheng Road Section, Liguan Road, Lishui Town, Nanhai District, Foshan, 528000 Guangdong People’s Republic of China
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Pucha KA, Ma TC, York W, Kang UJ, Kaufmann H, Kapogiannis D, Palma JA. Neuron-derived extracellular vesicles to examine brain mTOR target engagement with sirolimus in patients with multiple system atrophy. Parkinsonism Relat Disord 2023; 115:105821. [PMID: 37643509 PMCID: PMC10592064 DOI: 10.1016/j.parkreldis.2023.105821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/19/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023]
Abstract
INTRODUCTION Impaired autophagy is a pathogenic mechanism in the synucleinopathies. Sirolimus, a potent mTOR inhibitor and autophagy activator, had no beneficial effects in a randomized placebo-controlled trial in patients with multiple system atrophy (MSA). Whether sirolimus effectively inhibited brain mTOR activity was unknown. We aimed to evaluate if patients with MSA treated with sirolimus had evidence of inhibited brain mTOR pathways by measuring neuron-derived serum extracellular vesicles (NEVs). METHODS Serum samples were collected from participants of the sirolimus-MSA trial, which randomized patients to sirolimus (2-6 mg/day) or placebo for 48 weeks. NEVs were immunoprecipitated with three antibodies-against neurons. Brain mTOR engagement was quantified as the change in the NEV phosphorylated mTOR (p-mTOR) to total-mTOR (tot-mTOR) ratio after 48 weeks of sirolimus. RESULTS Samples from 27 patients [mean (±SD) age, 59.2±7 years, 15 (55.5%) men] were analyzed (19 sirolimus, 8 placebo). Treated- and placebo-patients had similar p-mTOR:tot-mTOR ratio at 24 (placebo: 0.248 ± 0.03, sirolimus: 0.289 ± 0.02; P = 0.305) and 48 weeks (placebo: 0.299 ± 0.05, sirolimus: 0.261 ± 0.03; P = 0.544). The tot-mTOR, p-mTOR, or their ratio levels were not associated with Unified MSA Rating Scale (UMSARS) worsening. DISCUSSION These results are consistent with no brain mTOR engagement by oral sirolimus up to 6 mg/day. NEV-based biomarkers are a rational approach to investigating target engagement in clinical trials of brain-targeted therapeutics.
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Affiliation(s)
- Krishna A Pucha
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Thong C Ma
- Department of Neurology, New York University School of Medicine, New York, NY, USA
| | - William York
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Un Jung Kang
- Department of Neurology, New York University School of Medicine, New York, NY, USA
| | - Horacio Kaufmann
- Department of Neurology, New York University School of Medicine, New York, NY, USA
| | - Dimitrios Kapogiannis
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
| | - Jose-Alberto Palma
- Department of Neurology, New York University School of Medicine, New York, NY, USA.
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11
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Las Heras M, Szenfeld B, Ballout RA, Buratti E, Zanlungo S, Dardis A, Klein AD. Understanding the phenotypic variability in Niemann-Pick disease type C (NPC): a need for precision medicine. NPJ Genom Med 2023; 8:21. [PMID: 37567876 PMCID: PMC10421955 DOI: 10.1038/s41525-023-00365-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Niemann-Pick type C (NPC) disease is a lysosomal storage disease (LSD) characterized by the buildup of endo-lysosomal cholesterol and glycosphingolipids due to loss of function mutations in the NPC1 and NPC2 genes. NPC patients can present with a broad phenotypic spectrum, with differences at the age of onset, rate of progression, severity, organs involved, effects on the central nervous system, and even response to pharmacological treatments. This article reviews the phenotypic variation of NPC and discusses its possible causes, such as the remaining function of the defective protein, modifier genes, sex, environmental cues, and splicing factors, among others. We propose that these factors should be considered when designing or repurposing treatments for this disease. Despite its seeming complexity, this proposition is not far-fetched, considering the expanding interest in precision medicine and easier access to multi-omics technologies.
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Affiliation(s)
- Macarena Las Heras
- Centro de Genética y Genómica, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, 7780272, Chile
| | - Benjamín Szenfeld
- Centro de Genética y Genómica, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, 7780272, Chile
| | - Rami A Ballout
- Department of Pediatrics, University of Texas Southwestern (UTSW) Medical Center and Children's Health, Dallas, TX, 75235, USA
| | - Emanuele Buratti
- Molecular Pathology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Trieste, 34149, Italy
| | - Silvana Zanlungo
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, 8330033, Chile
| | - Andrea Dardis
- Regional Coordinator Centre for Rare Diseases, University Hospital of Udine, 33100, Udine, Italy
| | - Andrés D Klein
- Centro de Genética y Genómica, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, 7780272, Chile.
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A new IRES-mediated truncated Cx32 isoform inhibits global mRNA translation to suppress glioblastoma. Biomed Pharmacother 2023; 161:114513. [PMID: 36931032 DOI: 10.1016/j.biopha.2023.114513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Glioblastoma (GBM) is the most lethal malignant primary brain tumor. Although multimodal therapy has been applied for GBM, the median survival time remains less than 16 months. Thus, better therapeutic targets in GBM are urgently needed. Herein, we first identified five new N-terminal-truncated Cx32 isoforms (GJB1-28k, GJB1-22k, GJB1-20k, GJB1-15k, and GJB1-13k) and further demonstrated that they were generated via cap-independent internal translation through internal ribosome entry sites (IRESs) in the coding sequence of GJB1 mRNA. Among these isoforms, GJB1-13k inhibited proliferation, promoted apoptosis, and limited cell cycle progression in GBM cells by inhibiting global mRNA translation. In vivo experiments further confirmed the antitumor activity of GJB1-13k against GBM cells. In addition, TSR3, a ribosomal maturation factor, was demonstrated to directly interact with GJB1-13k. Moreover, GBM cells with high TSR3 expression exhibited low sensitivity to GJB1-13k treatment, while GJB1-13k sensitivity was restored by TSR3 knockdown. Our work identifies a new IRES-mediated protein, GJB1-13k, and suggests that overexpression of GJB1-13k in GBM cells with low TSR3 expression or combined targeting of GJB1-13k and TSR3 in GBM cells with high TSR3 expression constitutes a potential therapeutic strategy for GBM.
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13
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D'Alessandris QG, Martini M, Cenci T, DI Bonaventura R, Lauretti L, Stumpo V, Olivi A, Larocca LM, Pallini R, Montano N. Tailored therapy for recurrent glioblastoma: report of a personalized molecular approach. J Neurosurg Sci 2023; 67:103-107. [PMID: 32550606 DOI: 10.23736/s0390-5616.20.04943-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Failure of clinical trials with targeted therapies in glioblastoma (GBM) is probably related to the enrollment of molecularly unselected patients. In this study we report the results of a precision medicine protocol in recurrent GBM. METHODS We prospectively evaluated 34 patients with recurrent GBM. We determined the expression of vascular endothelial growth factor (VEGF), epidermal growth factor receptor variant III (EGFRvIII), and phosphatase and tensin homolog (PTEN). According to the molecular pattern we administered bevacizumab alone in patients with VEGF overexpression, absence of EGFRvIII, and normal PTEN (group A; N.=16); bevacizumab + erlotinib in patients with VEGF overexpression, expression of EGFRvIII, and normal PTEN (group B; N.=14); and bevacizumab + sirolimus in patients with VEGF overexpression and loss of PTEN, irrespective of the EGFRvIII status (group C; N.=4). We evaluated the response rate, the clinical benefit rate, the 6-month progression-free survival (PFS-6), the 12-month PFS (PFS-12) and the safety profile of the treatment. Moreover, we compared our results with the ones of EORTC 26101 trial. RESULTS Response rate was 50% in the whole cohort with the highest rate in group C (75%). Clinical benefit rate was 71% with the highest rate in group C (75%). PFS-6 was 56% in the whole cohort with the highest rate in group B (64%). PFS-12 was 21% in the whole cohort with the highest rate in group B (29%). When comparing our results with those from the combination arm of the EORTC 26101 trial we found a significantly higher PFS-6 and PFS-12 in our cohort. CONCLUSIONS The precision medicine protocol for recurrent GBM is feasible and leads to improved results if compared with studies lacking molecular selection.
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Affiliation(s)
- Quintino G D'Alessandris
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Maurizio Martini
- Department of Pathology, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Tonia Cenci
- Department of Pathology, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Rina DI Bonaventura
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Liverana Lauretti
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Vittorio Stumpo
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Alessandro Olivi
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Luigi M Larocca
- Department of Pathology, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Roberto Pallini
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy
| | - Nicola Montano
- Department of Neurosurgery, IRCCS A. Gemelli University Polyclinic Foundation, Sacred Heart Catholic University, Rome, Italy -
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Chen D, Xu Y, Gao X, Zhu X, Liu X, Yan D. A novel signature of cuproptosis-related lncRNAs predicts prognosis in glioma: Evidence from bioinformatic analysis and experiments. Front Pharmacol 2023; 14:1158723. [PMID: 37101543 PMCID: PMC10123286 DOI: 10.3389/fphar.2023.1158723] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/29/2023] [Indexed: 04/28/2023] Open
Abstract
Background: Glioma patients often experience unfavorable outcomes and elevated mortality rates. Our study established a prognostic signature utilizing cuproptosis-associated long non-coding RNAs (CRLs) and identified novel prognostic biomarkers and therapeutic targets for glioma. Methods: The expression profiles and related data of glioma patients were obtained from The Cancer Genome Atlas, an accessible online database. We then constructed a prognostic signature using CRLs and evaluated the prognosis of glioma patients by means of Kaplan-Meier survival curves and receiver operating characteristic curves. A nomogram based on clinical features was employed to predict the individual survival probability of glioma patients. Functional enrichment analysis was conducted to identify crucial CRL-related enriched biological pathways. The role of LEF1-AS1 in glioma was validated in two glioma cell lines (T98 and U251). Results: We developed and validated a prognostic model for glioma with 9 CRLs. Patients with low-risk had a considerably longer overall survival (OS). The prognostic CRL signature may serve independently as an indicator of prognosis for glioma patients. In addition, functional enrichment analysis revealed significant enrichment of multiple immunological pathways. Notable differences were observed between the two risk groups in terms of immune cell infiltration, function, and immune checkpoints. We further identified four drugs based on their different IC50 values from the two risk groups. Subsequently, we discovered two molecular subtypes of glioma (cluster one and cluster two), with the cluster one subtype exhibiting a remarkably longer OS compared to the cluster two subtype. Finally, we observed that inhibition of LEF1-AS1 curbed the proliferation, migration, and invasion of glioma cells. Conclusion: The CRL signatures were confirmed as a reliable prognostic and therapy response indicator for glioma patients. Inhibition of LEF1-AS1 effectively suppressed the growth, migration, and invasion of gliomas; therefore, LEF1-AS1 presents itself as a promising prognostic biomarker and potential therapeutic target for glioma.
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Affiliation(s)
- Di Chen
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yuan Xu
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Xueping Gao
- Department of Clinical Laboratory Medicine, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xuqiang Zhu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Xianzhi Liu
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Dongming Yan
- Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Dongming Yan,
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15
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Jhanwar-Uniyal M, Gellerson O, Bree J, Das M, Kleinman G, Gandhi CD. Defining the role of mTOR pathway in the regulation of stem cells of glioblastoma. Adv Biol Regul 2022; 88:100946. [PMID: 36658088 DOI: 10.1016/j.jbior.2022.100946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 01/01/2023]
Abstract
The mechanistic target of rapamycin (mTOR), a serine/threonine kinase, functions by forming two multiprotein complexes termed mTORC1 and mTORC2. Glioblastoma (GBM) is a uniformly fatal brain tumor that remains incurable partly due to the existence of untreatable cancer stem cells (CSC). The pathogenesis of GBM is largely due to the loss of the tumor suppressor gene PTEN, which is implicated in the aberrant activation of the mTOR pathway. The major cause of tumor recurrence, growth, and invasion is the presence of the unique population of CSC. Resistance to conventional therapies appears to be caused by both extensive genetic abnormalities and dysregulation of the transcription landscape. Consequently, CSCs have emerged as targets of interest in new treatment paradigms. Evidence suggests that inhibition of the mTOR pathway can also be applied to target CSCs. Here we explored the role of the mTOR pathway in the regulation of stem cells of GBM by treating them with inhibitors of canonical PI3K/AKT/mTOR pathways such as rapamycin (mTORC1 inhibitor), PP242 (ATP binding mTORC1/2 inhibitor), LY294002 (PI3K inhibitor), and MAPK inhibitor, U0126. A significant number of GBM tumors expressed stem cell marker nestin and activated mTOR (pmTORSer2448), with most tumor cells co-expressing both markers. The expression of stem cell marker NANOG was suppressed following rapamycin treatment. The neurospheres were disrupted following rapamycin and LY294002 treatments. Rapamycin or PP242 along with differentiating agent All-trans-retinoic acid reduced stem cell proliferation. Treatment with novel small molecule inhibitors of mTORC1/2 demonstrated that Torin1 and Torin2 suppressed the proliferation of GBM CSC, while XL388 was less effective. Torin1 and XL388 delay the process of self-renewal as compared to controls, whereas Torin2 halted self-renewal. Torin2 was able to eradicate tumor cells. In conclusion, Torin2 effectively targeted CSCs of GBM by halting self-renewal and inhibiting cell proliferation, underscoring the use of Torin2 in the treatment of GBM.
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Affiliation(s)
- Meena Jhanwar-Uniyal
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA.
| | - Olivia Gellerson
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA
| | - Julie Bree
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA
| | - Mohan Das
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA
| | - George Kleinman
- Department of Pathology, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA
| | - Chirag D Gandhi
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY, 10595, USA
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16
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Shi G, Chiramel AI, Li T, Lai KK, Kenney AD, Zani A, Eddy AC, Majdoul S, Zhang L, Dempsey T, Beare PA, Kar S, Yewdell JW, Best SM, Yount JS, Compton AA. Rapalogs downmodulate intrinsic immunity and promote cell entry of SARS-CoV-2. J Clin Invest 2022; 132:e160766. [PMID: 36264642 PMCID: PMC9753997 DOI: 10.1172/jci160766] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 10/18/2022] [Indexed: 12/24/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in immunocompromised individuals is associated with prolonged virus shedding and evolution of viral variants. Rapamycin and its analogs (rapalogs, including everolimus, temsirolimus, and ridaforolimus) are FDA approved as mTOR inhibitors for the treatment of human diseases, including cancer and autoimmunity. Rapalog use is commonly associated with an increased susceptibility to infection, which has been traditionally explained by impaired adaptive immunity. Here, we show that exposure to rapalogs increased susceptibility to SARS-CoV-2 infection in tissue culture and in immunologically naive rodents by antagonizing the cell-intrinsic immune response. We identified 1 rapalog (ridaforolimus) that was less potent in this regard and demonstrated that rapalogs promote spike-mediated entry into cells, by triggering the degradation of the antiviral proteins IFITM2 and IFITM3 via an endolysosomal remodeling program called microautophagy. Rapalogs that increased virus entry inhibited mTOR-mediated phosphorylation of the transcription factor TFEB, which facilitated its nuclear translocation and triggered microautophagy. In rodent models of infection, injection of rapamycin prior to and after virus exposure resulted in elevated SARS-CoV-2 replication and exacerbated viral disease, while ridaforolimus had milder effects. Overall, our findings indicate that preexisting use of certain rapalogs may elevate host susceptibility to SARS-CoV-2 infection and disease by activating lysosome-mediated suppression of intrinsic immunity.
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Affiliation(s)
- Guoli Shi
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute (NCI), NIH, Frederick, Maryland, USA
| | - Abhilash I. Chiramel
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Hamilton, Montana, USA
| | - Tiansheng Li
- Laboratory of Viral Diseases, NIAID, NIH, Bethesda, Maryland, USA
| | - Kin Kui Lai
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute (NCI), NIH, Frederick, Maryland, USA
| | - Adam D. Kenney
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Ashley Zani
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Adrian C. Eddy
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Saliha Majdoul
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute (NCI), NIH, Frederick, Maryland, USA
| | - Lizhi Zhang
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Tirhas Dempsey
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute (NCI), NIH, Frederick, Maryland, USA
| | - Paul A. Beare
- Laboratory of Bacteriology, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, Montana, USA
| | | | | | - Sonja M. Best
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases (NIAID), NIH, Hamilton, Montana, USA
| | - Jacob S. Yount
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, Ohio, USA
| | - Alex A. Compton
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute (NCI), NIH, Frederick, Maryland, USA
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17
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Leitner DF, Devore S, Laze J, Friedman D, Mills JD, Liu Y, Janitz M, Anink JJ, Baayen JC, Idema S, van Vliet EA, Diehl B, Scott C, Thijs R, Nei M, Askenazi M, Sivathamboo S, O’Brien T, Wisniewski T, Thom M, Aronica E, Boldrini M, Devinsky O. Serotonin receptor expression in hippocampus and temporal cortex of temporal lobe epilepsy patients by postictal generalized electroencephalographic suppression duration. Epilepsia 2022; 63:2925-2936. [PMID: 36053862 PMCID: PMC9669210 DOI: 10.1111/epi.17400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/18/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Prolonged postictal generalized electroencephalographic suppression (PGES) is a potential biomarker for sudden unexpected death in epilepsy (SUDEP), which may be associated with dysfunctional autonomic responses and serotonin signaling. To better understand molecular mechanisms, PGES duration was correlated to 5HT1A and 5HT2A receptor protein expression and RNAseq from resected hippocampus and temporal cortex of temporal lobe epilepsy patients with seizures recorded in preoperative evaluation. METHODS Analyses included 36 cases (age = 14-64 years, age at epilepsy onset = 0-51 years, epilepsy duration = 2-53 years, PGES duration = 0-93 s), with 13 cases in all hippocampal analyses. 5HT1A and 5HT2A protein was evaluated by Western blot and histologically in hippocampus (n = 16) and temporal cortex (n = 9). We correlated PGES duration to our previous RNAseq dataset for serotonin receptor expression and signaling pathways, as well as weighted gene correlation network analysis (WGCNA) to identify correlated gene clusters. RESULTS In hippocampus, 5HT2A protein by Western blot positively correlated with PGES duration (p = .0024, R2 = .52), but 5HT1A did not (p = .87, R2 = .0020). In temporal cortex, 5HT1A and 5HT2A had lower expression and did not correlate with PGES duration. Histologically, PGES duration did not correlate with 5HT1A or 5HT2A expression in hippocampal CA4, dentate gyrus, or temporal cortex. RNAseq identified two serotonin receptors with expression that correlated with PGES duration in an exploratory analysis: HTR3B negatively correlated (p = .043, R2 = .26) and HTR4 positively correlated (p = .049, R2 = .25). WGCNA identified four modules correlated with PGES duration, including positive correlation with synaptic transcripts (p = .040, Pearson correlation r = .52), particularly potassium channels (KCNA4, KCNC4, KCNH1, KCNIP4, KCNJ3, KCNJ6, KCNK1). No modules were associated with serotonin receptor signaling. SIGNIFICANCE Higher hippocampal 5HT2A receptor protein and potassium channel transcripts may reflect underlying mechanisms contributing to or resulting from prolonged PGES. Future studies with larger cohorts should assess functional analyses and additional brain regions to elucidate mechanisms underlying PGES and SUDEP risk.
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Affiliation(s)
- Dominique F. Leitner
- Comprehensive Epilepsy Center, NYU Grossman School of Medicine, New York, NY, USA
- Center for Cognitive Neurology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
| | - Sasha Devore
- Comprehensive Epilepsy Center, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
| | - Juliana Laze
- Comprehensive Epilepsy Center, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
| | - Daniel Friedman
- Comprehensive Epilepsy Center, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
| | - James D. Mills
- Amsterdam UMC location University of Amsterdam, Department of (Neuro)pathology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, the Netherlands
- Department of Clinical and Experimental Epilepsy, University College London Institute of Neurology, London, UK
- Chalfont Centre for Epilepsy, Bucks, UK
| | - Yan Liu
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, NY, USA
| | - Michael Janitz
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Jasper J. Anink
- Amsterdam UMC location University of Amsterdam, Department of (Neuro)pathology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, the Netherlands
| | - Johannes C. Baayen
- Amsterdam UMC location Vrije Universiteit Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, De Boelelaan 1117, Amsterdam, the Netherlands
| | - Sander Idema
- Amsterdam UMC location Vrije Universiteit Amsterdam, Department of Neurosurgery, Amsterdam Neuroscience, De Boelelaan 1117, Amsterdam, the Netherlands
| | - Erwin A. van Vliet
- Amsterdam UMC location University of Amsterdam, Department of (Neuro)pathology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, the Netherlands
- Swammerdam Institute for Life Sciences, Center for Neuroscience, University of Amsterdam, Amsterdam, the Netherlands
| | - Beate Diehl
- Department of Clinical and Experimental Epilepsy, University College London Institute of Neurology, London, UK
| | - Catherine Scott
- Department of Clinical and Experimental Epilepsy, University College London Institute of Neurology, London, UK
| | - Roland Thijs
- Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, the Netherlands
| | - Maromi Nei
- Department of Neurology, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA, USA
| | - Manor Askenazi
- Biomedical Hosting LLC, Arlington, MA, USA
- Department of Biochemistry and Molecular Pharmacology, NYU Grossman School of Medicine, New York, NY, USA
| | - Shobi Sivathamboo
- Department of Neuroscience, Alfred Health, Central Clinical School, Melbourne, Victoria, Australia
- Department Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
| | - Terence O’Brien
- Department of Neuroscience, Alfred Health, Central Clinical School, Melbourne, Victoria, Australia
- Department Medicine, Royal Melbourne Hospital, University of Melbourne, Parkville, Victoria, Australia
| | - Thomas Wisniewski
- Center for Cognitive Neurology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Pathology, NYU Grossman School of Medicine, New York, NY, USA
- Department of Psychiatry, NYU Grossman School of Medicine, New York, NY, USA
| | - Maria Thom
- Department of Clinical and Experimental Epilepsy, University College London Institute of Neurology, London, UK
| | - Eleonora Aronica
- Amsterdam UMC location University of Amsterdam, Department of (Neuro)pathology, Amsterdam Neuroscience, Meibergdreef 9, Amsterdam, the Netherlands
- Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, the Netherlands
| | - Maura Boldrini
- Molecular Imaging and Neuropathology Division, New York State Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
| | - Orrin Devinsky
- Comprehensive Epilepsy Center, NYU Grossman School of Medicine, New York, NY, USA
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, USA
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18
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Mohamed E, Kumar A, Zhang Y, Wang AS, Chen K, Lim Y, Shai A, Taylor JW, Clarke J, Hilz S, Berger MS, Solomon DA, Costello JF, Molinaro AM, Phillips JJ. PI3K/AKT/mTOR signaling pathway activity in IDH-mutant diffuse glioma and clinical implications. Neuro Oncol 2022; 24:1471-1481. [PMID: 35287169 PMCID: PMC9435510 DOI: 10.1093/neuonc/noac064] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND IDH-mutant diffuse gliomas are heterogeneous, and improved methods for optimal patient therapeutic stratification are needed. PI3K/AKT/mTOR signaling activity can drive disease progression and potential therapeutic inhibitors of the pathway are available. Yet, the prevalence of PI3K/AKT/mTOR signaling pathway activity in IDH-mutant glioma is unclear and few robust strategies to assess activity in clinical samples exist. METHODS PI3K/AKT/mTOR signaling pathway activity was evaluated in a retrospective cohort of 132 IDH-mutant diffuse glioma (91 astrocytoma and 41 oligodendroglioma, 1p/19q-codeleted) through quantitative multiplex immunoprofiling using phospho-specific antibodies for PI3K/AKT/mTOR pathway members, PRAS40, RPS6, and 4EBP1, and tumor-specific anti-IDH1 R132H. Expression levels were correlated with genomic evaluation of pathway intrinsic genes and univariate and multivariate Cox proportional hazard regression models were used to evaluate the relationship with outcome. RESULTS Tumor-specific expression of p-PRAS40, p-RPS6, and p-4EBP1 was common in IDH-mutant diffuse glioma and increased with CNS WHO grade from 2 to 3. Genomic analysis predicted pathway activity in 21.7% (13/60) while protein evaluation identified active PI3K/AKT/mTOR signaling in 56.6% (34/60). Comparison of expression in male versus female patients suggested sexual dimorphism. Of particular interest, when adjusting for clinical prognostic factors, the level of phosphorylation of RPS6 was strongly associated with PFS (P < .005). Phosphorylation levels of both PRAS40 and RPS6 showed an association with PFS in univariate analysis. CONCLUSIONS Our study emphasizes the value of proteomic assessment of signaling pathway activity in tumors as a means to identify relevant oncogenic pathways and potentially as a biomarker for identifying aggressive disease.
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Affiliation(s)
- Esraa Mohamed
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Anupam Kumar
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Yalan Zhang
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Albert S Wang
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Katharine Chen
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Yunita Lim
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Anny Shai
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Jennie W Taylor
- Division of Neuro-Oncology, Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA.,Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Jennifer Clarke
- Division of Neuro-Oncology, Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA.,Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Stephanie Hilz
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Mitchel S Berger
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - David A Solomon
- Department of Neurology, University of California, San Francisco, San Francisco, California, USA
| | - Joseph F Costello
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Annette M Molinaro
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA
| | - Joanna J Phillips
- Department of Neurological Surgery, Brain Tumor Center, University of California, San Francisco, San Francisco, California, USA.,Division of Neuropathology, Department of Pathology, University of California, San Francisco, San Francisco, California, USA
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19
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Morawe MP, Liao F, Amberg W, van Bergeijk J, Chang R, Gulino M, Hamilton C, Hoft C, Lumpkin C, Mastis B, McGlame E, Nuber J, Plaas C, Ravikumar B, Roy K, Schanzenbächer M, Tierno J, Lakics V, Dellovade T, Townsend M. Pharmacological mTOR-inhibition facilitates clearance of AD-related tau aggregates in the mouse brain. Eur J Pharmacol 2022; 934:175301. [DOI: 10.1016/j.ejphar.2022.175301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/03/2022]
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20
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Shi G, Chiramel AI, Li T, Lai KK, Kenney AD, Zani A, Eddy A, Majdoul S, Zhang L, Dempsey T, Beare PA, Kar S, Yewdell JW, Best SM, Yount JS, Compton AA. Rapalogs downmodulate intrinsic immunity and promote cell entry of SARS-CoV-2. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2022:2021.04.15.440067. [PMID: 33880473 PMCID: PMC8057238 DOI: 10.1101/2021.04.15.440067] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
SARS-CoV-2 infection in immunocompromised individuals is associated with prolonged virus shedding and evolution of viral variants. Rapamycin and its analogs (rapalogs, including everolimus, temsirolimus, and ridaforolimus) are FDA-approved as mTOR inhibitors for the treatment of human diseases, including cancer and autoimmunity. Rapalog use is commonly associated with increased susceptibility to infection, which has been traditionally explained by impaired adaptive immunity. Here, we show that exposure to rapalogs increases susceptibility to SARS-CoV-2 infection in tissue culture and in immunologically naive rodents by antagonizing the cell-intrinsic immune response. By identifying one rapalog (ridaforolimus) that is less potent in this regard, we demonstrate that rapalogs promote Spike-mediated entry into cells by triggering the degradation of antiviral proteins IFITM2 and IFITM3 via an endolysosomal remodeling program called microautophagy. Rapalogs that increase virus entry inhibit the mTOR-mediated phosphorylation of the transcription factor TFEB, which facilitates its nuclear translocation and triggers microautophagy. In rodent models of infection, injection of rapamycin prior to and after virus exposure resulted in elevated SARS-CoV-2 replication and exacerbated viral disease, while ridaforolimus had milder effects. Overall, our findings indicate that preexisting use of certain rapalogs may elevate host susceptibility to SARS-CoV-2 infection and disease by activating lysosome-mediated suppression of intrinsic immunity.
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Affiliation(s)
- Guoli Shi
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Abhilash I. Chiramel
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA
| | - Tiansheng Li
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Kin Kui Lai
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Adam D. Kenney
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Ashley Zani
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Adrian Eddy
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Saliha Majdoul
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Lizhi Zhang
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Tirhas Dempsey
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Paul A. Beare
- Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA
| | | | - Jonathan W. Yewdell
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, MD, USA
| | - Sonja M. Best
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, MT, USA
| | - Jacob S. Yount
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | - Alex A. Compton
- HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
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21
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Gunjur A, Balasubramanian A, Hafeez U, Menon S, Cher L, Parakh S, Gan HK. Poor correlation between preclinical and patient efficacy data for tumor targeted monotherapies in glioblastoma: the results of a systematic review. J Neurooncol 2022; 159:539-549. [PMID: 35933567 DOI: 10.1007/s11060-022-04092-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/06/2022] [Indexed: 10/15/2022]
Abstract
PURPOSE Limited progress has been made in treating glioblastoma, and we hypothesise that poor concordance between preclinical and clinical efficacy in this disease is a major barrier to drug development. We undertook a systematic review to quantify this issue. METHODS We identified phase I trials (P1Ts) of tumor targeted drugs, subsequent trial results and preceding relevant preclinical data published in adult glioblastoma patients between 2006-2019 via structured searches of EMBASE/MEDLINE/PUBMED. Detailed clinical/preclinical information was extracted. Associations between preclinical and clinical efficacy metrics were determined using appropriate non-parametric statistical tests. RESULTS A total of 28 eligible P1Ts were identified, with median ORR of 2.9% (range 0.0-33.3%). Twenty-three (82%) had published relevant preclinical data available. Five (18%) had relevant later phase clinical trial data available. There was overall poor correlation between preclinical and clinical efficacy metrics on univariate testing. However, drugs that had undergone in vivo testing had significantly longer median overall survival (7.9 vs 5.6mo, p = 0.02). Additionally, drugs tested in ≥ 2 biologically-distinct in vivo models ('multiple models') had a significantly better median response rate than those tested using only one ('single model') or those lacking in vivo data (6.8% vs 1.2% vs. 0.0% respectively, p = 0.027). CONCLUSION Currently used preclinical models poorly predict subsequent activity in P1Ts, and generally over-estimate the anti-tumor activity of these drugs. This underscores the need for better preclinical models to aid the development of novel anti-glioblastoma drugs. Until these become widely available and used, the use of multiple biologically-distinct in vivo models should be strongly encouraged.
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Affiliation(s)
- Ashray Gunjur
- Experimental Cancer Genetics, Wellcome Sanger Institute, Hinxton, UK.,Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia
| | - Adithya Balasubramanian
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,Personalised Oncology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052, Australia
| | - Umbreen Hafeez
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Austin Hospital, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,La Trobe University School of Cancer Medicine, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,Medical Student Education, University of Melbourne, Gratton St, Parkville, VIC, 3010, Australia
| | - Siddharth Menon
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Austin Hospital, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,La Trobe University School of Cancer Medicine, 145 Studley Road, Heidelberg, VIC, 3084, Australia
| | - Lawrence Cher
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia
| | - Sagun Parakh
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,Olivia Newton-John Cancer Research Institute, Austin Hospital, 145 Studley Road, Heidelberg, VIC, 3084, Australia.,La Trobe University School of Cancer Medicine, 145 Studley Road, Heidelberg, VIC, 3084, Australia
| | - Hui Kong Gan
- Department of Medical Oncology, Austin Health, 145 Studley Road, Heidelberg, VIC, 3084, Australia. .,Olivia Newton-John Cancer Research Institute, Austin Hospital, 145 Studley Road, Heidelberg, VIC, 3084, Australia. .,La Trobe University School of Cancer Medicine, 145 Studley Road, Heidelberg, VIC, 3084, Australia. .,Department of Medicine, University of Melbourne, 145 Studley Road, Heidelberg, VIC, 3084, Australia.
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22
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Luger AL, König S, Samp PF, Urban H, Divé I, Burger MC, Voss M, Franz K, Fokas E, Filipski K, Demes MC, Stenzinger A, Sahm F, Reuss DE, Harter PN, Wagner S, Hattingen E, Wichert J, Lapa C, Fröhling S, Steinbach JP, Ronellenfitsch MW. Molecular matched targeted therapies for primary brain tumors-a single center retrospective analysis. J Neurooncol 2022; 159:243-259. [PMID: 35864412 PMCID: PMC9424147 DOI: 10.1007/s11060-022-04049-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/27/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE Molecular diagnostics including next generation gene sequencing are increasingly used to determine options for individualized therapies in brain tumor patients. We aimed to evaluate the decision-making process of molecular targeted therapies and analyze data on tolerability as well as signals for efficacy. METHODS Via retrospective analysis, we identified primary brain tumor patients who were treated off-label with a targeted therapy at the University Hospital Frankfurt, Goethe University. We analyzed which types of molecular alterations were utilized to guide molecular off-label therapies and the diagnostic procedures for their assessment during the period from 2008 to 2021. Data on tolerability and outcomes were collected. RESULTS 413 off-label therapies were identified with an increasing annual number for the interval after 2016. 37 interventions (9%) were targeted therapies based on molecular markers. Glioma and meningioma were the most frequent entities treated with molecular matched targeted therapies. Rare entities comprised e.g. medulloblastoma and papillary craniopharyngeoma. Molecular targeted approaches included checkpoint inhibitors, inhibitors of mTOR, FGFR, ALK, MET, ROS1, PIK3CA, CDK4/6, BRAF/MEK and PARP. Responses in the first follow-up MRI were partial response (13.5%), stable disease (29.7%) and progressive disease (46.0%). There were no new safety signals. Adverse events with fatal outcome (CTCAE grade 5) were not observed. Only, two patients discontinued treatment due to side effects. Median progression-free and overall survival were 9.1/18 months in patients with at least stable disease, and 1.8/3.6 months in those with progressive disease at the first follow-up MRI. CONCLUSION A broad range of actionable alterations was targeted with available molecular therapeutics. However, efficacy was largely observed in entities with paradigmatic oncogenic drivers, in particular with BRAF mutations. Further research on biomarker-informed molecular matched therapies is urgently necessary.
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Affiliation(s)
- Anna-Luisa Luger
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. .,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany. .,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany. .,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.
| | - Sven König
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Patrick Felix Samp
- Department of Neuroradiology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Hans Urban
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Iris Divé
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Michael C Burger
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Martin Voss
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Kea Franz
- University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Department of Neurosurgery, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Emmanouil Fokas
- Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Department of Radiotherapy and Oncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Katharina Filipski
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Neurological Institute (Edinger Institute), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Melanie-Christin Demes
- Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Albrecht Stenzinger
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.,Centers for Personalized Medicine (ZPM), Heidelberg Site, Heidelberg, Germany
| | - Felix Sahm
- German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany.,Clinical Cooperation Unit Neuropathology, Heidelberg, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - David E Reuss
- German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Neuropathology, University Hospital Heidelberg, Heidelberg, Germany.,Clinical Cooperation Unit Neuropathology, Heidelberg, Germany.,German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Patrick N Harter
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Neurological Institute (Edinger Institute), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sebastian Wagner
- German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,Department of Medicine, Hematology/Oncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Elke Hattingen
- Department of Neuroradiology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Jennifer Wichert
- Department of Nuclear Medicine, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Constantin Lapa
- Faculty of Medicine, Nuclear Medicine, University of Augsburg, Augsburg, Germany.,Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Stefan Fröhling
- German Cancer Consortium (DKTK), Heidelberg, Germany.,Division of Translational Medical Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joachim P Steinbach
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Michael W Ronellenfitsch
- Dr. Senckenberg Institute of Neurooncology, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt am Main, Germany.,Frankfurt Cancer Institute (FCI), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany.,University Cancer Center Frankfurt (UCT), University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
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23
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Mohamed MA, Elkhateeb WA, Daba GM. Rapamycin golden jubilee and still the miraculous drug: a potent immunosuppressant, antitumor, rejuvenative agent, and potential contributor in COVID-19 treatment. BIORESOUR BIOPROCESS 2022; 9:65. [PMID: 35730039 PMCID: PMC9188914 DOI: 10.1186/s40643-022-00554-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/27/2022] [Indexed: 11/10/2022] Open
Abstract
Although celebrating its golden jubilee, rapamycin’s importance keeps increasing by the day. Starting as a promising antifungal agent, then as a potent immunosuppressant, strong anticancer drug, and now rapamycin is attracting serious attention as a rejuvenative agent and a possible contributor in treating this era pandemic, COVID-19. Due to its diverse biological activities and promising medical applications, we aimed in this review to put rapamycin under the spot and highlight its discovery, famous microbial producers, reported biological activities, chemical structure, famous analogues, and biosynthesis. Moreover, discuss some rapamycin production approaches including solid-state fermentation, and stressing out producing strain. On the other hand, describe its action mechanism and trials to use it in treatment of COVID-19. Additionally, we highlighted some of the side effects accompanying its use, and describe some approaches reported to minimize these undesired effects. Finally, we report the current status of rapamycin and its analogues in global market, and discuss future prospects of this potent drug.
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Affiliation(s)
- Mohamed A Mohamed
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Institute, National Research Centre, El Buhouth St. Dokki, Giza, 12622 Egypt
| | - Waill A Elkhateeb
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Institute, National Research Centre, El Buhouth St. Dokki, Giza, 12622 Egypt
| | - Ghoson M Daba
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Researches Institute, National Research Centre, El Buhouth St. Dokki, Giza, 12622 Egypt
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24
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Leitner DF, Kanshin E, Askenazi M, Siu Y, Friedman D, Devore S, Jones D, Ueberheide B, Wisniewski T, Devinsky O. Pilot study evaluating everolimus molecular mechanisms in tuberous sclerosis complex and focal cortical dysplasia. PLoS One 2022; 17:e0268597. [PMID: 35587487 PMCID: PMC9119437 DOI: 10.1371/journal.pone.0268597] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/02/2022] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Tuberous sclerosis complex (TSC) and some focal cortical dysplasias (FCDs) are associated with dysfunctional mTOR signaling, resulting in increased cell growth and ribosomal S6 protein phosphorylation (phospho-S6). mTOR inhibitors can reduce TSC tumor growth and seizure frequency, and preclinical FCD studies indicate seizure suppression. This pilot study evaluated safety of mTOR inhibitor everolimus in treatment resistant (failure of >2 anti-seizure medications) TSC and FCD patients undergoing surgical resection and to assess mTOR signaling and molecular pathways. METHODS AND FINDINGS We evaluated everolimus in 14 treatment resistant epilepsy patients undergoing surgical resection (4.5 mg/m2 daily for 7 days; n = 4 Active, mean age 18.3 years, range 4-26; n = 10, Control, mean age 13.1, range 3-45). Everolimus was well tolerated. Mean plasma everolimus in Active participants were in target range (12.4 ng/ml). Brain phospho-S6 was similar in Active and Control participants with a lower trend in Active participants, with Ser235/236 1.19-fold (p = 0.67) and Ser240/244 1.15-fold lower (p = 0.66). Histologically, Ser235/236 was 1.56-fold (p = 0.37) and Ser240/244 was 5.55-fold lower (p = 0.22). Brain proteomics identified 11 proteins at <15% false discovery rate associated with coagulation system (p = 1.45x10-9) and acute phase response (p = 1.23x10-6) activation. A weighted gene correlation network analysis (WGCNA) of brain proteomics and phospho-S6 identified 5 significant modules. Higher phospho-S6 correlated negatively with cellular respiration and synaptic transmission and positively with organophosphate metabolic process, nuclear mRNA catabolic process, and neuron ensheathment. Brain metabolomics identified 14 increased features in Active participants, including N-acetylaspartylglutamic acid. Plasma proteomics and cytokine analyses revealed no differences. CONCLUSIONS Short-term everolimus before epilepsy surgery in TSC and FCD resulted in no adverse events and trending lower mTOR signaling (phospho-S6). Future studies should evaluate implications of our findings, including coagulation system activation and everolimus efficacy in FCD, in larger studies with long-term treatment to better understand molecular and clinical effects. CLINICAL TRIALS REGISTRATION ClinicalTrials.gov NCT02451696.
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Affiliation(s)
- Dominique F. Leitner
- Comprehensive Epilepsy Center, New York University School of Medicine, New York, New York, United States of America
| | - Evgeny Kanshin
- Proteomics Laboratory, Division of Advanced Research Technologies, NYU School of Medicine, New York, New York, United States of America
| | - Manor Askenazi
- Biomedical Hosting LLC, Arlington, Massachusetts, United States of America
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York, United States of America
| | - Yik Siu
- Metabolomics Core Resource Laboratory, New York University School of Medicine, New York, New York, United States of America
| | - Daniel Friedman
- Comprehensive Epilepsy Center, New York University School of Medicine, New York, New York, United States of America
| | - Sasha Devore
- Comprehensive Epilepsy Center, New York University School of Medicine, New York, New York, United States of America
| | - Drew Jones
- Metabolomics Core Resource Laboratory, New York University School of Medicine, New York, New York, United States of America
| | - Beatrix Ueberheide
- Proteomics Laboratory, Division of Advanced Research Technologies, NYU School of Medicine, New York, New York, United States of America
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York, United States of America
- Center for Cognitive Neurology, Department of Neurology, New York University School of Medicine, New York, New York, United States of America
| | - Thomas Wisniewski
- Center for Cognitive Neurology, Department of Neurology, New York University School of Medicine, New York, New York, United States of America
- Department of Psychiatry, New York University School of Medicine, New York, New York, United States of America
- Department of Pathology, New York University School of Medicine, New York, New York, United States of America
| | - Orrin Devinsky
- Comprehensive Epilepsy Center, New York University School of Medicine, New York, New York, United States of America
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25
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Stoyanov GS, Lyutfi E, Georgieva R, Georgiev R, Dzhenkov D, Petkova L, Ivanov BD, Kaprelyan A, Ghenev P. Diaph3 underlines tumor cell heterogeneity in glioblastoma with implications for treatment modalities resistance. J Neurooncol 2022; 157:523-531. [PMID: 35380294 DOI: 10.1007/s11060-022-03996-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/24/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Glioblastoma (GBM) is the most aggressive central nervous system (CNS) tumor with astrocytic differentiation. The growth pattern of GBM mimics that of the precursor cell migration during the fetal development of the brain. Diaphanous homolog (Diaph3) has been established to play a role in both CNS maturation and cancer progression as it is required both for cell migration and division. Furthermore, Diaph3 has been shown to play a role in malignant disease progression through hyperactivation of the EGFR/MEK/ERK in loss of expression and its overexpression correlating to hyperactivity of the mTOR pathway, both of which are with a well-established role in GBM. Herein, we aimed at establishing the diagnostic role of Diaph3 immunohistochemistry expression patterns in GBM and their possible implications for molecular response to different therapies. MATERIALS AND METHODS The study utilized a retrospective nonclinical approach. Results of Diaph3 immunohistochemical expression were compared to healthy controls and reactive gliosis and statistically analyzed for correlation with neuroradiological tumor parameters and patient survival. RESULTS Healthy controls showed individual weakly positive cells, while reactive gliosis controls showed a strong expression in astrocytic projections. GBM samples showed a heterogeneous positive reaction to Diaph3, mean number of positive cells 62.66%, median 61.5, range 12-96%. Areas of migrating cells showed a strong diffuse cytoplasmic reaction. Cells located in the tumor core and those in areas of submeningeal aggregation had no antibody expression. Statistical analysis revealed no correlation with tumor size or patient survival. CONCLUSION The different expression pattern of Diaph3 in healthy controls, reactive gliosis and GBM shows promise as a clinical differentiating marker. Despite Diaph3 expression not correlating with survival and tumor size in GBM, there is an accumulating body of evidence that Diaph3 correlates with mTOR activity and can thus be used as a predictor for response to rapamycin and taxanes, clinical studies of which have shown promising, if mixed results in GBM.
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Affiliation(s)
- George S Stoyanov
- Department of General and Clinical Pathology, Forensic Medicine and Deontology, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Marin Drinov 55 Str, 9002, Varna, Bulgaria.
| | - Emran Lyutfi
- Department of Neurology and Neuroscience, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Varna, Bulgaria
| | - Reneta Georgieva
- Student, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Varna, Bulgaria
| | - Radoslav Georgiev
- Department of Imaging Diagnostics, Interventional Radiology and Radiotherapy, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Varna, Bulgaria
| | - Deyan Dzhenkov
- Department of General and Clinical Pathology, Forensic Medicine and Deontology, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Marin Drinov 55 Str, 9002, Varna, Bulgaria
| | - Lilyana Petkova
- Department of General and Clinical Pathology, Forensic Medicine and Deontology, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Marin Drinov 55 Str, 9002, Varna, Bulgaria
| | - Borislav D Ivanov
- Department of Clinical Medical Sciences, Faculty of Dental Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Varna, Bulgaria
| | - Ara Kaprelyan
- Department of Neurology and Neuroscience, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Varna, Bulgaria
| | - Peter Ghenev
- Department of General and Clinical Pathology, Forensic Medicine and Deontology, Faculty of Medicine, Medical University Varna "Prof. Dr. Paraskev Stoyanov", Marin Drinov 55 Str, 9002, Varna, Bulgaria
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26
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Palma JA, Martinez J, Millar Vernetti P, Ma T, Perez MA, Zhong J, Qian Y, Dutta S, Maina KN, Siddique I, Bitan G, Ades-Aron B, Shepherd TM, Kang UJ, Kaufmann H. mTOR Inhibition with Sirolimus in Multiple System Atrophy: A Randomized, Double-Blind, Placebo-Controlled Futility Trial and 1-Year Biomarker Longitudinal Analysis. Mov Disord 2022; 37:778-789. [PMID: 35040506 PMCID: PMC9018525 DOI: 10.1002/mds.28923] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/01/2021] [Accepted: 12/27/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Multiple system atrophy (MSA) is a fatal neurodegenerative disease characterized by the aggregation of α-synuclein in glia and neurons. Sirolimus (rapamycin) is an mTOR inhibitor that promotes α-synuclein autophagy and reduces its associated neurotoxicity in preclinical models. OBJECTIVE To investigate the efficacy and safety of sirolimus in patients with MSA using a futility design. We also analyzed 1-year biomarker trajectories in the trial participants. METHODS Randomized, double-blind, parallel group, placebo-controlled clinical trial at the New York University of patients with probable MSA randomly assigned (3:1) to sirolimus (2-6 mg daily) for 48 weeks or placebo. Primary endpoint was change in the Unified MSA Rating Scale (UMSARS) total score from baseline to 48 weeks. (ClinicalTrials.gov NCT03589976). RESULTS The trial was stopped after a pre-planned interim analysis met futility criteria. Between August 15, 2018 and November 15, 2020, 54 participants were screened, and 47 enrolled and randomly assigned (35 sirolimus, 12 placebo). Of those randomized, 34 were included in the intention-to-treat analysis. There was no difference in change from baseline to week 48 between the sirolimus and placebo in UMSARS total score (mean difference, 2.66; 95% CI, -7.35-6.91; P = 0.648). There was no difference in UMSARS-1 and UMSARS-2 scores either. UMSARS scores changes were similar to those reported in natural history studies. Neuroimaging and blood biomarker results were similar in the sirolimus and placebo groups. Adverse events were more frequent with sirolimus. Analysis of 1-year biomarker trajectories in all participants showed that increases in blood neurofilament light chain (NfL) and reductions in whole brain volume correlated best with UMSARS progression. CONCLUSIONS Sirolimus for 48 weeks was futile to slow the progression of MSA and had no effect on biomarkers compared to placebo. One-year change in blood NfL and whole brain atrophy are promising biomarkers of disease progression for future clinical trials. © 2022 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Jose-Alberto Palma
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | - Jose Martinez
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | | | - Thong Ma
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | - Miguel A. Perez
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | - Judy Zhong
- Department of Population Health, Division of Biostatistics, New York University Grossman School of Medicine, New York, NY, USA
| | - Yingzhi Qian
- Department of Population Health, Division of Biostatistics, New York University Grossman School of Medicine, New York, NY, USA
| | - Suman Dutta
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Katherine N. Maina
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Ibrar Siddique
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Gal Bitan
- Department of Neurology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA,Brain Research Institute, University of California, Los Angeles, CA, USA,Molecular Biology Institute, University of California, Los Angeles, CA, USA
| | - Benjamin Ades-Aron
- Department of Radiology, New York University Grossman School of Medicine, New York, NY, USA
| | - Timothy M. Shepherd
- Department of Radiology, New York University Grossman School of Medicine, New York, NY, USA
| | - Un Jung Kang
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
| | - Horacio Kaufmann
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA
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Ion Channel Drugs Suppress Cancer Phenotype in NG108-15 and U87 Cells: Toward Novel Electroceuticals for Glioblastoma. Cancers (Basel) 2022; 14:cancers14061499. [PMID: 35326650 PMCID: PMC8946312 DOI: 10.3390/cancers14061499] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 01/07/2023] Open
Abstract
Glioblastoma is a lethal brain cancer that commonly recurs after tumor resection and chemotherapy treatment. Depolarized resting membrane potentials and an acidic intertumoral extracellular pH have been associated with a proliferative state and drug resistance, suggesting that forced hyperpolarization and disruption of proton pumps in the plasma membrane could be a successful strategy for targeting glioblastoma overgrowth. We screened 47 compounds and compound combinations, most of which were ion-modulating, at different concentrations in the NG108-15 rodent neuroblastoma/glioma cell line. A subset of these were tested in the U87 human glioblastoma cell line. A FUCCI cell cycle reporter was stably integrated into both cell lines to monitor proliferation and cell cycle response. Immunocytochemistry, electrophysiology, and a panel of physiological dyes reporting voltage, calcium, and pH were used to characterize responses. The most effective treatments on proliferation in U87 cells were combinations of NS1643 and pantoprazole; retigabine and pantoprazole; and pantoprazole or NS1643 with temozolomide. Marker analysis and physiological dye signatures suggest that exposure to bioelectric drugs significantly reduces proliferation, makes the cells senescent, and promotes differentiation. These results, along with the observed low toxicity in human neurons, show the high efficacy of electroceuticals utilizing combinations of repurposed FDA approved drugs.
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28
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Caballero M, Barreto N, Bonfanti AP, Munhoz J, Rocha e Silva T, Sutti R, Verinaud L, Pinheiro de Mato FC, Lanfredi GP, Rapôso C. Isolated Components From Spider Venom Targeting Human Glioblastoma Cells and Its Potential Combined Therapy With Rapamycin. Front Mol Biosci 2022; 9:752668. [PMID: 35359607 PMCID: PMC8964069 DOI: 10.3389/fmolb.2022.752668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/28/2022] [Indexed: 12/01/2022] Open
Abstract
Glioblastomas (GBs) are responsible for a higher mortality rate among gliomas, corresponding to more than 50% of them and representing a challenge in terms of therapy and prognosis. Peptide-based antineoplastic therapy is a vast and promising field, and these molecules are one of the main classes present in spider venoms. Recently, our research group demonstrated the cytotoxic effects of Phoneutria nigriventer spider venom (PnV) in GBs. The present study aimed to select the purified PnV-components with potential antineoplastic effects, as well as to compare different metabolic conditions. Human GB (NG97) cells were treated with the PnV fractions: F1 (less than 3 kDa), F2 (between 3 and 10 kDa), and F3 (greater than 10 kDa). After treatments, viability (MTT), proliferation (CFSE), death (Annexin V/propidium iodide-PI), and cell cycle (PI) assays were performed. The F1 and F2 fractions in acute periods (1 and 5 h) and low concentrations (0.1 and 1 μg/ml) showed more relevant effects and were repurified in subfractions (SF1–SF11); from these, SF3 and SF4 showed the most significant effects. The previous inhibition of mTOR by rapamycin had a synergistic effect with SFs, reducing cell viability even more significantly than the untreated control. Taken together, the results point to components present in SF3 and SF4 as potential prototypes for the development of new drugs for GB treatment and stimulate studies to use these compounds in combination therapy with a rapamycin-like activity. Future studies will be conducted to characterize, synthesize the molecules, and to evaluate the efficacy and safety in preclinical models.
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Affiliation(s)
- Marcus Caballero
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | - Natalia Barreto
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | - Amanda Pires Bonfanti
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | - Jaqueline Munhoz
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | | | - Rafael Sutti
- Faculdade de Ciências Médicas, Santa Casa de São Paulo, São Paulo, Brazil
| | - Liana Verinaud
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | - Felipe Cezar Pinheiro de Mato
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- Departamento de Biologia Estrutural e Funcional, Instituto de Biologia, UNICAMP, Campinas, Brazil
| | - Guilherme Pauperio Lanfredi
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (FMRP-USP), São Paulo, Brazil
| | - Catarina Rapôso
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
- *Correspondence: Catarina Rapôso,
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29
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Liu J, Gao M, Yang Z, Zhao Y, Guo K, Sun B, Gao Z, Wang L. Macrophages and Metabolic Reprograming in the Tumor Microenvironment. Front Oncol 2022; 12:795159. [PMID: 35242705 PMCID: PMC8885627 DOI: 10.3389/fonc.2022.795159] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/21/2022] [Indexed: 12/12/2022] Open
Abstract
Due to the emergence of traditional drug resistance in tumor treatment, the anti-cancer therapies are facing multiple challenges. Immunotherapy, as a new and universal treatment, has been gradually concerned. The macrophages, as an important part of the immune system, play an important role in it. Many studies have shown that immune state is essential in cancer progression and prognosis, rebuilding the architecture and functional orientation of the tumor region. Most tumors are complex ecosystems that change temporally and spatially under the pressure of proliferation, apoptosis, and extension of every cell in the microenvironment. Here, we review how macrophages states can be dynamically altered in different metabolic states and we also focus on the formation of immune exhaustion. Finally, we look forward to the explorations of clinical treatment for immune metabolism process.
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Affiliation(s)
- Jin Liu
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Mingwei Gao
- Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhou Yang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China
| | - Yidan Zhao
- Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China
| | - Kun Guo
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China
| | - Binwen Sun
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China
| | - Zhenming Gao
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Liming Wang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, Dalian, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, Dalian, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
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30
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Dunn E, Chitcholtan K, Sykes P, Garrill A. The Anti-Proliferative Effect of PI3K/mTOR and ERK Inhibition in Monolayer and Three-Dimensional Ovarian Cancer Cell Models. Cancers (Basel) 2022; 14:cancers14020395. [PMID: 35053555 PMCID: PMC8773481 DOI: 10.3390/cancers14020395] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/03/2022] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
Simple Summary In ovarian cancer patients the PI3K/AKT/mTOR and RAS/RAF/MEK/ERK kinase signaling pathways are frequently dysregulated, making them potential targets of therapeutic inhibitors. In this study, we used four human ovarian cancer cell lines grown in two- and three-dimensional models to investigate the potential efficacy of combining two inhibitors, which target these pathways, against ovarian cancer. The inhibitor combination was found to have cell line- and model-dependent synergistic antiproliferative effect. Abstract Most ovarian cancer patients are diagnosed with advanced stage disease, which becomes unresponsive to chemotherapeutic treatments. The PI3K/AKT/mTOR and the RAS/RAF/MEK/ERK kinase signaling pathways are attractive targets for potential therapeutic inhibitors, due to the high frequency of mutations to PTEN, PIK3CA, KRAS and BRAF in several ovarian cancer subtypes. However, monotherapies targeting one of these pathways have shown modest effects in clinical trials. This limited efficacy of the agents could be due to upregulation and increased signaling via the adjacent alternative pathway. In this study, the efficacy of combined PI3K/mTOR (BEZ235) and ERK inhibition (SCH772984) was investigated in four human ovarian cancer cell lines, grown as monolayer and three-dimensional cell aggregates. The inhibitor combination reduced cellular proliferation in a synergistic manner in OV-90 and OVCAR8 monolayers and in OV-90, OVCAR5 and SKOV3 aggregates. Sensitivity to the inhibitors was reduced in three-dimensional cell aggregates in comparison to monolayers. OV-90 cells cultured in large spheroids were sensitive to the inhibitors and displayed a robust synergistic antiproliferative response to the inhibitor combination. In contrast, OVCAR8 spheroids were resistant to the inhibitors. These findings suggest that combined PI3K/mTOR and ERK inhibition could be a useful strategy for overcoming treatment resistance in ovarian cancer and warrants further preclinical investigation. Additionally, in some cell lines the use of different three-dimensional models can influence cell line sensitivity to PI3K/mTOR and RAS/RAF/MEK/ERK pathway inhibitors.
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Affiliation(s)
- Elizabeth Dunn
- School of Biological Sciences, University of Canterbury, Christchurch 8041, New Zealand
- Correspondence: (E.D.); (A.G.)
| | - Kenny Chitcholtan
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch 8011, New Zealand; (K.C.); (P.S.)
| | - Peter Sykes
- Department of Obstetrics and Gynaecology, University of Otago, Christchurch 8011, New Zealand; (K.C.); (P.S.)
| | - Ashley Garrill
- School of Biological Sciences, University of Canterbury, Christchurch 8041, New Zealand
- Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch 8041, New Zealand
- Correspondence: (E.D.); (A.G.)
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31
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Gorbunova AS, Kopeina GS, Zhivotovsky B. A Balance Between Autophagy and Other Cell Death Modalities in Cancer. Methods Mol Biol 2022; 2445:3-24. [PMID: 34972982 DOI: 10.1007/978-1-0716-2071-7_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Autophagy is an intracellular self-digestive process involved in catabolic degradation of damaged proteins, and organelles, and the elimination of cellular pathogens. Initially, autophagy was considered as a prosurvival mechanism, but the following insights shed light on its prodeath function. Nowadays, autophagy is established as a crucial player in the development of various diseases through interaction with other molecular pathways within a cell. Additionally, disturbance in autophagy is one of the main pathological alterations that lead to resistance of cancer cells to treatment. These autophagy-related pathologies gave rise to the development of new therapeutic drugs. Here, we summarize the current knowledge on the autophagic role in disease pathogenesis, particularly in cancer, and the interplay between autophagy and other cell death modalities in order to combat cancer.
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Affiliation(s)
- Anna S Gorbunova
- Faculty of Basic Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Gelina S Kopeina
- Faculty of Basic Medicine, Lomonosov Moscow State University, Moscow, Russia
| | - Boris Zhivotovsky
- Faculty of Basic Medicine, Lomonosov Moscow State University, Moscow, Russia.
- Karolinska Institutet, Institute of Environmental Medicine, Stockholm, Sweden.
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32
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Khonsari F, Heydari M, Dinarvand R, Sharifzadeh M, Atyabi F. Brain targeted delivery of rapamycin using transferrin decorated nanostructured lipid carriers. BIOIMPACTS : BI 2022; 12:21-32. [PMID: 35087713 PMCID: PMC8783081 DOI: 10.34172/bi.2021.23389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 02/08/2021] [Accepted: 04/18/2021] [Indexed: 01/17/2023]
Abstract
Introduction: Recent studies showed that rapamycin, as a mammalian target of rapamycin (mTOR) inhibitor, could have beneficial therapeutic effects for the central nervous system (CNS) related diseases. However, the immunosuppressive effect of rapamycin as an adverse effect, the low water solubility, and the rapid in vivo degradation along with the blood-brain barrier-related challenges restricted the clinical use of this drug for brain diseases. To overcome these drawbacks, a transferrin (Tf) decorated nanostructured lipid carrier (NLC) containing rapamycin was designed and developed. Methods: Rapamycin-loaded cationic and bare NLCs were prepared using solvent diffusion and sonication method and well characterized. The optimum cationic NLCs were physically decorated with Tf. For in vitro study, the MTT assay and intracellular uptake of nanoparticles on U-87 MG glioblastoma cells were assessed. The animal biodistribution of nanoparticles was evaluated by fluorescent optical imaging. Finally, the in vivo effect of NLCs on the immune system was also studied. Results: Spherical NLCs with small particle sizes ranging from 120 to 150 nm and high entrapment efficiency of more than 90%, showed ≥80% cell viability. More importantly, Tf-decorated NLCs in comparison with bare NLCs, showed a significantly higher cellular uptake (97% vs 60%) after 2 hours incubation and further an appropriate brain accumulation with lower uptake in untargeted tissue in mice. Surprisingly, rapamycin-loaded NLCs exhibited no immunosuppressive effect. Conclusion: Our findings proposed that the designed Tf-decorated NLCs could be considered as a safe and efficient carrier for targeted brain delivery of rapamycin which may have an important value in the clinic for the treatment of neurological disorders.
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Affiliation(s)
- Fatemeh Khonsari
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Heydari
- Department of Pharmaceutical Nanotechnology, Faculty of pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Rassoul Dinarvand
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sharifzadeh
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran Iran
| | - Fatemeh Atyabi
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
,Department of Pharmaceutical Nanotechnology, Faculty of pharmacy, Tehran University of Medical Sciences, Tehran, Iran
,Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
,Corresponding author: Fatemeh Atyabi,
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33
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Xia Q, Li W, Ali S, Xu M, Li Y, Li S, Meng X, Liu L, Dong L. Smurf1 silencing restores PTEN expression that ameliorates progression of human glioblastoma and sensitizes tumor cells to mTORC1/C2 inhibitor Torin1. iScience 2021; 24:103528. [PMID: 34917902 PMCID: PMC8666673 DOI: 10.1016/j.isci.2021.103528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/13/2021] [Accepted: 11/23/2021] [Indexed: 11/28/2022] Open
Abstract
Amplification of ubiquitin E3 ligase Smurf1 promotes degradation of PTEN leading to hyperactivation of the Akt/mTORC1 pathway. However, inhibitors of this pathway have not hitherto yielded promising results in clinical studies because of strong drug resistance. Here, we investigated Smurf1 expression in various glioblastoma (GB) cell lines and patient tissues. The therapeutic efficacy of Smurf1 silencing and Torin1 treatment was assessed in GB cells and orthotopic mouse model. We found Smurf1 loss elevates PTEN levels that interrupt the epidermal growth factor receptor pathway activity. Cotreatment with Smurf1 silencing and mTORC1/C2 inhibitor Torin1 remarkably decreased phosphorylation of Akt, and mTORC1 downstream targets 4EBP1 and S6K resulting in synergistic inhibitory effects. Smurf1 knockdown in orthotopic GB mouse model impaired tumor growth and enhanced cytotoxicity of Torin1. Together, these findings suggest a rational combination of Smurf1 inhibition and Torin1 as a promising new avenue to circumvent PI3K/Akt pathway-driven tumor progression and drug resistance. Smurf1 ubiquitylates and degrades PTEN, leading to upregulating oncogenic pathways Loss of Smurf1 resensitizes tumor cells to mTOR inhibitor Torin1 in PTEN-wild type GB Smurf1 depletion with Torin1 has enhanced efficacy by inhibiting pho-4EBP1 and pho-S6K Smurf1 suppression with Torin1 is toxic to Rapamycin resistant GB cells
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Affiliation(s)
- Qin Xia
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Wenxuan Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Sakhawat Ali
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Mengchuan Xu
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Yang Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Shengzhen Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Xinyi Meng
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Liqun Liu
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Lei Dong
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
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34
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Bergholz JS, Zhao JJ. How Compensatory Mechanisms and Adaptive Rewiring Have Shaped Our Understanding of Therapeutic Resistance in Cancer. Cancer Res 2021; 81:6074-6077. [PMID: 34911779 DOI: 10.1158/0008-5472.can-21-3605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022]
Abstract
Therapeutic resistance to targeted therapies by tumor cells is a common and serious problem in the clinic. Increased understanding of the molecular mechanisms that underly resistance is necessary for the rational design and improvement of effective pharmacologic treatment strategies. The landmark study by O'Reilly and colleagues published in Cancer Research in 2006 provided valuable insights into nongenomic adaptive rewiring and compensatory mechanisms responsible for mediating resistance to targeted inhibition of the PI3K-AKT-mTOR pathway, and how tumor cells regulate signaling pathways via negative feedback loops. These findings have proven fundamental for guiding current efforts to develop effective combination treatments and provided a blueprint for research studies aimed at understanding the intricacies of cellular signaling.See related article by O'Reilly and colleagues, Cancer Res 2006;66:1500-8.
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Affiliation(s)
- Johann S Bergholz
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts.,Broad Institute of Harvard and MIT, Cambridge, Massachusetts
| | - Jean J Zhao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts. .,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts.,Broad Institute of Harvard and MIT, Cambridge, Massachusetts
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35
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Jhanwar-Uniyal M, Dominguez JF, Mohan AL, Tobias ME, Gandhi CD. Disentangling the signaling pathways of mTOR complexes, mTORC1 and mTORC2, as a therapeutic target in glioblastoma. Adv Biol Regul 2021; 83:100854. [PMID: 34996736 DOI: 10.1016/j.jbior.2021.100854] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 12/13/2022]
Abstract
Aberrant signaling of mechanistic target of rapamycin (mTOR' aka mammalian target of rapamycin) is shown to be linked to tumorigenesis of numerous malignancies including glioblastoma (GB). Glioblastoma mTOR is a serine threonine kinase that functions by forming two multiprotein complexes. There complexes are named mTORC1 and mTORC2 and downstream activated substrate execute cellular and metabolic functions. This signaling cascade of PI3K/AKT/mTOR is often upregulated due to frequent loss of the tumor suppressor PTEN, a phosphatase that functions antagonistically to PI3K. mTOR regulates cell growth, motility, and metabolism by forming two multiprotein complexes, mTORC1 and mTORC2, which are composed of special binding partners. These complexes are sensitive to distinct stimuli. mTORC1 is sensitive to nutrients and mTORC2 is regulated via PI3K and growth factor signaling. Since rapamycin and it's analogue are less effective in treatment of GB, we used novel ATP-competitive dual inhibitors of mTORC1 and mTORC2, namely, Torin1, Torin2, and XL388. Torin2 caused a concentration dependent pharmacodynamic effects on inhibition of phosphorylation of the mTORC1 substrates S6KSer235/236 and 4E-BP1Thr37/46 as well as the mTORC2 substrate AKTSer473 resulting in suppression of tumor cell proliferation and migration. Torin1 showed similar effects only at higher doses. Another small molecule compound, XL388 suppressed cell proliferation at a higher dose but failed to inhibit cell migration. Torin1 suppressed phosphorylation of PRAS40Thr246, however Torin2 completely abolished it. XL388 treatment inhibited the phosphorylation of PRAS40Thr246 at higher doses only. These findings underscore the use of novel compounds in treatment of cancer. In addition, formulation of third generation mTOR inhibitor "Rapalink-1" may provide new aspects to target mTOR pathways. Numerous inhibitors are currently being used in clinical trials that are aimed to target activated mTOR pathways.
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Affiliation(s)
- Meena Jhanwar-Uniyal
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA.
| | - Jose F Dominguez
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA
| | - Avinash L Mohan
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA
| | - Michael E Tobias
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA
| | - Chirag D Gandhi
- Department of Neurosurgery, Westchester Medical Center, New York Medical College, Valhalla, NY, 10595, USA
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36
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Sevastre AS, Costachi A, Tataranu LG, Brandusa C, Artene SA, Stovicek O, Alexandru O, Danoiu S, Sfredel V, Dricu A. Glioblastoma pharmacotherapy: A multifaceted perspective of conventional and emerging treatments (Review). Exp Ther Med 2021; 22:1408. [PMID: 34676001 PMCID: PMC8524703 DOI: 10.3892/etm.2021.10844] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 09/21/2021] [Indexed: 12/13/2022] Open
Abstract
Due to its localisation, rapid onset, high relapse rate and resistance to most currently available treatment methods, glioblastoma multiforme (GBM) is considered to be the deadliest type of all gliomas. Although surgical resection, chemotherapy and radiotherapy are among the therapeutic strategies used for the treatment of GBM, the survival rates achieved are not satisfactory, and there is an urgent need for novel effective therapeutic options. In addition to single-target therapy, multi-target therapies are currently under development. Furthermore, drugs are being optimised to improve their ability to cross the blood-brain barrier. In the present review, the main strategies applied for GBM treatment in terms of the most recent therapeutic agents and approaches that are currently under pre-clinical and clinical testing were discussed. In addition, the most recently reported experimental data following the testing of novel therapies, including stem cell therapy, immunotherapy, gene therapy, genomic correction and precision medicine, were reviewed, and their advantages and drawbacks were also summarised.
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Affiliation(s)
- Ani-Simona Sevastre
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Alexandra Costachi
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Ligia Gabriela Tataranu
- Department of Neurosurgery, ‘Bagdasar-Arseni’ Emergency Clinical Hospital, 041915 Bucharest, Romania
| | - Corina Brandusa
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Stefan Alexandru Artene
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Olivian Stovicek
- Department of Pharmacology, Faculty of Nursing Targu Jiu, Titu Maiorescu University of Bucharest, 210106 Targu Jiu, Romania
| | - Oana Alexandru
- Department of Neurology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Suzana Danoiu
- Department of Pathophysiology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Veronica Sfredel
- Department of Physiology, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Anica Dricu
- Department of Biochemistry, Faculty of Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
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The Bumpy Road towards mTOR Inhibition in Glioblastoma: Quo Vadis? Biomedicines 2021; 9:biomedicines9121809. [PMID: 34944625 PMCID: PMC8698473 DOI: 10.3390/biomedicines9121809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 01/07/2023] Open
Abstract
Glioblastoma multiforme (GBM), a grade IV astrocytoma, is a lethal brain tumor with a poor prognosis. Despite recent advances in the molecular biology of GBM, neuro-oncologists have very limited treatment options available to improve the survival of GBM patients. A prominent signaling pathway implicated in GBM pathogenesis is that of the mechanistic target of rapamycin (mTOR). Attempts to target the mTOR pathway with first-generation mTOR inhibitors appeared promising in the preclinical stage; however, results have been disappointing in clinical trials, owing to the heterogeneous nature of GBM, escape mechanisms against treatment, the blood–brain barrier, drug-related toxicities, and the imperfect design of clinical trials, among others. The development of next-generation mTOR inhibitors and their current evaluation in clinical trials have sparked new hope to realize the clinical potential of mTOR inhibitors in GBM. Meanwhile, studies are continuously furthering our understanding of mTOR signaling dysregulation, its downstream effects, and interplay with other signaling pathways in GBM tumors. Therefore, it remains to be seen whether targeting mTOR in GBM will eventually prove to be fruitful or futile.
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38
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Chen X, Wang D, Wang G, Huang Y, Yu X, Lu J, Zhai X, Xu H, Li Z. Optimization of Initial Dose Regimen for Sirolimus in Pediatric Patients With Lymphangioma. Front Pharmacol 2021; 12:668952. [PMID: 34819851 PMCID: PMC8606893 DOI: 10.3389/fphar.2021.668952] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 10/26/2021] [Indexed: 12/14/2022] Open
Abstract
Sirolimus is an effective oral treatment for pediatric patients with lymphangioma. The present clinical study in 15 children (0.12–16.39 years of age) examines the effects of underlying factors on sirolimus concentrations through application of a population pharmacokinetic model. Using Monte Carlo simulation, an initial dose regimen for sirolimus in pediatric patients with lymphangioma is presented. It is found that the lower the body weight, the higher the clearance rate and sirolimus clearances are 0.31–0.17 L/h/kg in pediatric patients with lymphangioma whose weights are 5–60 kg, respectively. The doses of sirolimus, 0.07, 0.06, 0.05 mg/kg/day are recommended for weights of 5–10, 10–24.5 and 24.5–60 kg in children with lymphangioma. This study is the first to establish a population pharmacokinetic model for sirolimus and to recommend initial doses in pediatric patients with lymphangioma. Large scale, prospective studies are needed in the future.
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Affiliation(s)
- Xiao Chen
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Dongdong Wang
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Guangfei Wang
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Yidie Huang
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Xin Yu
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Jinmiao Lu
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaowen Zhai
- Department of Hematology and Oncology, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Hong Xu
- Department of Nephrology, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
| | - Zhiping Li
- Department of Pharmacy, National Children's Medical Center, Children's Hospital of Fudan University, Shanghai, China
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PI3K/AKT/mTOR Signaling Pathway Is Required for JCPyV Infection in Primary Astrocytes. Cells 2021; 10:cells10113218. [PMID: 34831441 PMCID: PMC8624856 DOI: 10.3390/cells10113218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/05/2021] [Accepted: 11/12/2021] [Indexed: 12/13/2022] Open
Abstract
Astrocytes are a main target of JC polyomavirus (JCPyV) in the central nervous system (CNS), where the destruction of these cells, along with oligodendrocytes, leads to the fatal disease progressive multifocal leukoencephalopathy (PML). There is no cure currently available for PML, so it is essential to discover antivirals for this aggressive disease. Additionally, the lack of a tractable in vivo models for studying JCPyV infection makes primary cells an accurate alternative for elucidating mechanisms of viral infection in the CNS. This research to better understand the signaling pathways activated in response to JCPyV infection reveals and establishes the importance of the PI3K/AKT/mTOR signaling pathway in JCPyV infection in primary human astrocytes compared to transformed cell lines. Using RNA sequencing and chemical inhibitors to target PI3K, AKT, and mTOR, we have demonstrated the importance of this signaling pathway in JCPyV infection of primary astrocytes not observed in transformed cells. Collectively, these findings illuminate the potential for repurposing drugs that are involved with inhibition of the PI3K/AKT/mTOR signaling pathway and cancer treatment as potential therapeutics for PML, caused by this neuroinvasive virus.
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40
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Amin AG, Jeong SW, Gillick JL, Sursal T, Murali R, Gandhi CD, Jhanwar-Uniyal M. Targeting the mTOR pathway using novel ATP‑competitive inhibitors, Torin1, Torin2 and XL388, in the treatment of glioblastoma. Int J Oncol 2021; 59:83. [PMID: 34523696 PMCID: PMC8448541 DOI: 10.3892/ijo.2021.5263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/11/2021] [Indexed: 12/13/2022] Open
Abstract
Mechanistic target of rapamycin (mTOR), which functions via two multiprotein complexes termed mTORC1 and mTORC2, is positioned in the canonical phosphoinositide 3-kinase-related kinase (PI3K)/AKT (PI3K/AKT) pathways. These complexes exert their actions by regulating other important kinases, such as 40S ribosomal S6 kinases (S6K), eukaryotic translation initiation factor 4E (elF4E)-binding protein 1 (4E-BP1) and AKT, to control cell growth, proliferation, migration and survival in response to nutrients and growth factors. Glioblastoma (GB) is a devastating form of brain cancer, where the mTOR pathway is deregulated due to frequent upregulation of the Receptor Tyrosine Kinase/PI3K pathways and loss of the tumor suppressor phosphatase and tensin homologue (PTEN). Rapamycin and its analogs were less successful in clinical trials for patients with GB due to their incomplete inhibition of mTORC1 and the activation of mitogenic pathways via negative feedback loops. Here, the effects of selective ATP-competitive dual inhibitors of mTORC1 and mTORC2, Torin1, Torin2 and XL388, are reported. Torin2 exhibited concentration-dependent pharmacodynamic effects on inhibition of phosphorylation of the mTORC1 substrates S6KSer235/236 and 4E-BP1Thr37/46 as well as the mTORC2 substrate AKTSer473 resulting in suppression of tumor cell migration, proliferation and S-phase entry. Torin1 demonstrated similar effects, but only at higher doses. XL388 suppressed cell proliferation at a higher dose, but failed to inhibit cell migration. Treatment with Torin1 suppressed phosphorylation of proline rich AKT substrate of 40 kDa (PRAS40) at Threonine 246 (PRAS40Thr246) whereas Torin2 completely abolished it. XL388 treatment suppressed the phosphorylation of PRAS40Thr246 only at higher doses. Drug resistance analysis revealed that treatment of GB cells with XL388 rendered partial drug resistance, which was also seen to a lesser extent with rapamycin and Torin1 treatments. However, treatment with Torin2 completely eradicated the tumor cell population. These results strongly suggest that Torin2, compared to Torin1 or XL388, is more effective in suppressing mTORC1 and mTORC2, and therefore in the inhibition of the GB cell proliferation, dissemination and in overcoming resistance to therapy. These findings underscore the significance of Torin2 in the treatment of GB.
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Affiliation(s)
- Anubhav G Amin
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - Seung Won Jeong
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - John L Gillick
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - Tolga Sursal
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - Raj Murali
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - Chirag D Gandhi
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
| | - Meena Jhanwar-Uniyal
- Department of Neurosurgery, New York Medical College/Westchester Medical Center, Valhalla, NY 10595, USA
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41
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Lee MTW, Mahy W, Rackham MD. The medicinal chemistry of mitochondrial dysfunction: a critical overview of efforts to modulate mitochondrial health. RSC Med Chem 2021; 12:1281-1311. [PMID: 34458736 PMCID: PMC8372206 DOI: 10.1039/d1md00113b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/17/2021] [Indexed: 12/16/2022] Open
Abstract
Mitochondria are subcellular organelles that perform a variety of critical biological functions, including ATP production and acting as hubs of immune and apoptotic signalling. Mitochondrial dysfunction has been extensively linked to the pathology of multiple neurodegenerative disorders, resulting in significant investment from the drug discovery community. Despite extensive efforts, there remains no disease modifying therapies for neurodegenerative disorders. This manuscript aims to review the compounds historically used to modulate the mitochondrial network through the lens of modern medicinal chemistry, and to offer a perspective on the evidence that relevant exposure was achieved in a representative model and that exposure was likely to result in target binding and engagement of pharmacology. We hope this manuscript will aid the community in identifying those targets and mechanisms which have been convincingly (in)validated with high quality chemical matter, and those for which an opportunity exists to explore in greater depth.
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Affiliation(s)
| | - William Mahy
- MSD The Francis Crick Institute 1 Midland Road London NW1 1AT UK
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42
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Maravat M, Bertrand M, Landon C, Fayon F, Morisset-Lopez S, Sarou-Kanian V, Decoville M. Complementary Nuclear Magnetic Resonance-Based Metabolomics Approaches for Glioma Biomarker Identification in a Drosophila melanogaster Model. J Proteome Res 2021; 20:3977-3991. [PMID: 34286978 DOI: 10.1021/acs.jproteome.1c00304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Human malignant gliomas are the most common type of primary brain tumor. Composed of glial cells and their precursors, they are aggressive and highly invasive, leading to a poor prognosis. Due to the difficulty of surgically removing tumors and their resistance to treatments, novel therapeutic approaches are needed to improve patient life expectancy and comfort. Drosophila melanogaster is a compelling genetic model to better understanding human neurological diseases owing to its high conservation in signaling pathways and cellular content of the brain. Here, glioma has been induced in Drosophila by co-activating the epidermal growth factor receptor and the phosphatidyl-inositol-3 kinase signaling pathways. Complementary nuclear magnetic resonance (NMR) techniques were used to obtain metabolic profiles in the third instar larvae brains. Fresh organs were directly studied by 1H high resolution-magic angle spinning (HR-MAS) NMR, and brain extracts were analyzed by solution-state 1H-NMR. Statistical analyses revealed differential metabolic signatures, impacted metabolic pathways, and glioma biomarkers. Each method was efficient to determine biomarkers. The highlighted metabolites including glucose, myo-inositol, sarcosine, glycine, alanine, and pyruvate for solution-state NMR and proline, myo-inositol, acetate, and glucose for HR-MAS show very good performances in discriminating samples according to their nature with data mining based on receiver operating characteristic curves. Combining results allows for a more complete view of induced disturbances and opens the possibility of deciphering the biochemical mechanisms of these tumors. The identified biomarkers provide a means to rebalance specific pathways through targeted metabolic therapy and to study the effects of pharmacological treatments using Drosophila as a model organism.
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Affiliation(s)
- Marion Maravat
- CNRS, CEMHTI UPR3079, Université d'Orléans, F-45071 Orléans, France
| | | | - Céline Landon
- CNRS, CBM UPR4301, Université d'Orléans, F-45071 Orléans, France
| | - Franck Fayon
- CNRS, CEMHTI UPR3079, Université d'Orléans, F-45071 Orléans, France
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43
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Yim C, Mansell K, Hussein N, Arnason T. Current cancer therapies and their influence on glucose control. World J Diabetes 2021; 12:1010-1025. [PMID: 34326951 PMCID: PMC8311484 DOI: 10.4239/wjd.v12.i7.1010] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/11/2021] [Accepted: 06/25/2021] [Indexed: 02/06/2023] Open
Abstract
This review focuses on the development of hyperglycemia arising from widely used cancer therapies spanning four drug classes. These groups of medications were selected due to their significant association with new onset hyperglycemia, or of potentially severe clinical consequences when present. These classes include glucocorticoids that are frequently used in addition to chemotherapy treatments, and the antimetabolite class of 5-fluorouracil-related drugs. Both of these classes have been in use in cancer therapy since the 1950s. Also considered are the phosphatidyl inositol-3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR)-inhibitors that provide cancer response advantages by disrupting cell growth, proliferation and survival signaling pathways, and have been in clinical use as early as 2007. The final class to be reviewed are the monoclonal antibodies selected to function as immune checkpoint inhibitors (ICIs). These were first used in 2011 for advanced melanoma and are rapidly becoming widely utilized in many solid tumors. For each drug class, the literature has been reviewed to answer relevant questions about these medications related specifically to the characteristics of the hyperglycemia that develops with use. The incidence of new glucose elevations in euglycemic individuals, as well as glycemic changes in those with established diabetes has been considered, as has the expected onset of hyperglycemia from their first use. This comparison emphasizes that some classes exhibit very immediate impacts on glucose levels, whereas other classes can have lengthy delays of up to 1 year. A comparison of the spectrum of severity of hyperglycemic consequences stresses that the appearance of diabetic ketoacidosis is rare for all classes except for the ICIs. There are distinct differences in the reversibility of glucose elevations after treatment is stopped, as the mTOR inhibitors and ICI classes have persistent hyperglycemia long term. These four highlighted drug categories differ in their underlying mechanisms driving hyperglycemia, with clinical presentations ranging from potent yet transient insulin resistant states [type 2 diabetes mellitus (T2DM) -like] to rare permanent insulin-deficient causes of hyperglycemia. Knowledge of the relative incidence of new onset hyperglycemia and the underlying causes are critical to appreciate how and when to best screen and treat patients taking any of these cancer drug therapies.
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Affiliation(s)
- Carly Yim
- Department of Medicine, University of Saskatchewan, Saskatoon S7N 0W8, Saskatchewan, Canada
| | - Kerry Mansell
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon S7N 5E5, Saskatchewan, Canada
| | - Nassrein Hussein
- Department of Medicine, Division of Endocrinology, University of Saskatchewan, Saskatoon S7N 0W8, Saskatchewan, Canada
| | - Terra Arnason
- Departments of Anatomy and Cell Biology and Medicine, Division of Endocrinology, University of Saskatchewan, Saskatoon S7N 0W8, Saskatchewan, Canada
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Spiesschaert B, Angerer K, Park J, Wollmann G. Combining Oncolytic Viruses and Small Molecule Therapeutics: Mutual Benefits. Cancers (Basel) 2021; 13:3386. [PMID: 34298601 PMCID: PMC8306439 DOI: 10.3390/cancers13143386] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/28/2021] [Accepted: 07/01/2021] [Indexed: 02/07/2023] Open
Abstract
The focus of treating cancer with oncolytic viruses (OVs) has increasingly shifted towards achieving efficacy through the induction and augmentation of an antitumor immune response. However, innate antiviral responses can limit the activity of many OVs within the tumor and several immunosuppressive factors can hamper any subsequent antitumor immune responses. In recent decades, numerous small molecule compounds that either inhibit the immunosuppressive features of tumor cells or antagonize antiviral immunity have been developed and tested for. Here we comprehensively review small molecule compounds that can achieve therapeutic synergy with OVs. We also elaborate on the mechanisms by which these treatments elicit anti-tumor effects as monotherapies and how these complement OV treatment.
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Affiliation(s)
- Bart Spiesschaert
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University Innsbruck, 6020 Innsbruck, Austria; (B.S.); (K.A.)
- Institute of Virology, Medical University Innsbruck, 6020 Innsbruck, Austria
- ViraTherapeutics GmbH, 6063 Rum, Austria
- Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach a.d. Riss, Germany;
| | - Katharina Angerer
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University Innsbruck, 6020 Innsbruck, Austria; (B.S.); (K.A.)
- Institute of Virology, Medical University Innsbruck, 6020 Innsbruck, Austria
| | - John Park
- Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach a.d. Riss, Germany;
| | - Guido Wollmann
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University Innsbruck, 6020 Innsbruck, Austria; (B.S.); (K.A.)
- Institute of Virology, Medical University Innsbruck, 6020 Innsbruck, Austria
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45
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LaPlante G, Zhang W. Targeting the Ubiquitin-Proteasome System for Cancer Therapeutics by Small-Molecule Inhibitors. Cancers (Basel) 2021; 13:3079. [PMID: 34203106 PMCID: PMC8235664 DOI: 10.3390/cancers13123079] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 12/14/2022] Open
Abstract
The ubiquitin-proteasome system (UPS) is a critical regulator of cellular protein levels and activity. It is, therefore, not surprising that its dysregulation is implicated in numerous human diseases, including many types of cancer. Moreover, since cancer cells exhibit increased rates of protein turnover, their heightened dependence on the UPS makes it an attractive target for inhibition via targeted therapeutics. Indeed, the clinical application of proteasome inhibitors in treatment of multiple myeloma has been very successful, stimulating the development of small-molecule inhibitors targeting other UPS components. On the other hand, while the discovery of potent and selective chemical compounds can be both challenging and time consuming, the area of targeted protein degradation through utilization of the UPS machinery has seen promising developments in recent years. The repertoire of proteolysis-targeting chimeras (PROTACs), which employ E3 ligases for the degradation of cancer-related proteins via the proteasome, continues to grow. In this review, we will provide a thorough overview of small-molecule UPS inhibitors and highlight advancements in the development of targeted protein degradation strategies for cancer therapeutics.
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Affiliation(s)
- Gabriel LaPlante
- Department of Molecular and Cellular Biology, College of Biological Science, University of Guelph, 50 Stone Rd E, Guelph, ON N1G2W1, Canada;
| | - Wei Zhang
- Department of Molecular and Cellular Biology, College of Biological Science, University of Guelph, 50 Stone Rd E, Guelph, ON N1G2W1, Canada;
- CIFAR Azrieli Global Scholars Program, Canadian Institute for Advanced Research, MaRS Centre West Tower, 661 University Avenue, Toronto, ON M5G1M1, Canada
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46
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Dual mTORC1/mTORC2 Inhibition as a Host-Directed Therapeutic Target in Pathologically Distinct Mouse Models of Tuberculosis. Antimicrob Agents Chemother 2021; 65:e0025321. [PMID: 33903099 PMCID: PMC8373221 DOI: 10.1128/aac.00253-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Efforts to develop more effective and shorter-course therapies for tuberculosis have included a focus on host-directed therapy (HDT). The goal of HDT is to modulate the host response to infection, thereby improving immune defenses to reduce the duration of antibacterial therapy and/or the amount of lung damage. As a mediator of innate and adaptive immune responses involved in eliminating intracellular pathogens, autophagy is a potential target for HDT in tuberculosis. Because Mycobacterium tuberculosis modulates mammalian target of rapamycin (mTOR) signaling to impede autophagy, pharmacologic mTOR inhibition could provide effective HDT. mTOR exists within two distinct multiprotein complexes, mTOR complex-1 (mTORC1) and mTOR complex-2 (mTORC2). Rapamycin and its analogs only partially inhibit mTORC1. We hypothesized that novel mTOR kinase inhibitors blocking both complexes would have expanded therapeutic potential. We compared the effects of two mTOR inhibitors, rapamycin and the orally available mTOR kinase domain inhibitor CC214-2, which blocks both mTORC1 and mTORC2, as adjunctive therapies against murine TB when added to the first-line regimen (isoniazid, rifampin, pyrazinamide, and ethambutol [RHZE]) or the novel bedaquiline-pretomanid-linezolid (BPaL) regimen. Neither mTOR inhibitor affected lung CFU counts after 4 to 8 weeks of treatment when combined with BPaL or RHZE. However, addition of CC214-2 to BPaL and RHZE was associated with significantly fewer relapses in C3HeB/FeJ mice compared to addition of rapamycin and, in RHZE-treated mice, resulted in fewer relapses than RHZE alone. Therefore, CC214-2 and related mTOR kinase inhibitors may be more effective candidates for HDT than rapamycin analogs and may have the potential to shorten the duration of TB treatment.
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47
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Holloway RW, Marignani PA. Targeting mTOR and Glycolysis in HER2-Positive Breast Cancer. Cancers (Basel) 2021; 13:2922. [PMID: 34208071 PMCID: PMC8230691 DOI: 10.3390/cancers13122922] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/18/2022] Open
Abstract
Up to one third of all breast cancers are classified as the aggressive HER2-positive subtype, which is associated with a higher risk of recurrence compared to HER2-negative breast cancers. The HER2 hyperactivity associated with this subtype drives tumor growth by up-regulation of mechanistic target of rapamycin (mTOR) pathway activity and a metabolic shift to glycolysis. Although inhibitors targeting the HER2 receptor have been successful in treating HER2-positive breast cancer, anti-HER2 therapy is associated with a high risk of recurrence and drug resistance due to stimulation of the PI3K-Akt-mTOR signaling pathway and glycolysis. Combination therapies against HER2 with inhibition of mTOR improve clinical outcomes compared to HER2 inhibition alone. Here, we review the role of the HER2 receptor, mTOR pathway, and glycolysis in HER2-positive breast cancer, along with signaling mechanisms and the efficacy of treatment strategies of HER2-positive breast cancer.
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Affiliation(s)
| | - Paola A. Marignani
- Department of Biochemistry & Molecular Biology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4R2, Canada;
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48
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Singh S, Ali R, Miyan J, Singh V, Meena S, Hasanain M, Bhadauria S, Datta D, Sarkar J, Haq W. Facile synthesis of rapamycin-peptide conjugates as mTOR and Akt inhibitors. Org Biomol Chem 2021; 19:4352-4358. [PMID: 33908567 DOI: 10.1039/d1ob00132a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and straightforward process for the synthesis of rapamycin peptide conjugates in a regio and chemoselective manner was developed. The methodology comprises the tagging of chemoselective functionalities to rapamycin and peptides which enables the conjugation of free peptides, without protecting the functionality of the side chain amino acids, in high yield and purity. From this methodology, we successfully conjugate free peptides containing up to 15 amino acids. Rapamycin is also conjugated to the peptides known for inhibiting the kinase activity of Akt protein. These conjugates act as dual target inhibitors and inhibit the kinase activity of both mTOR and Akt.
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Affiliation(s)
- Shalini Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India.
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Autophagy mediated lipid catabolism facilitates glioma progression to overcome bioenergetic crisis. Br J Cancer 2021; 124:1711-1723. [PMID: 33723393 PMCID: PMC8110959 DOI: 10.1038/s41416-021-01294-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 01/27/2021] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Activation of mTORC1 plays a significant role in cancer development and progression. However, the metabolic mechanisms to sustain mTORC1 activation of cancer cells within stressed environments are still under-appreciated. We recently revealed high autophagy activity in tumour cells with mTORC1 hyper-activation. Nevertheless, the functions and mechanisms of autophagy in regulating mTORC1 in glioma are not studied. METHODS Using glioma patient database and human glioma cells, we assessed the mechanisms and function of selective autophagy to sustain mTORC1 hyper-activation in glioma. RESULTS We revealed a strong association of altered mRNA levels in mTORC1 upstream and downstream genes with prognosis of glioma patients. Our results indicated that autophagy-mediated lipid catabolism was essential to sustain mTORC1 activity in glioma cells under energy stresses. We found that autophagy inhibitors or fatty acid oxidation (FAO) inhibitors in combination with 2-Deoxy-D-glucose (2DG) decreased energy production and survival of glioma cells in vitro. Consistently, inhibition of autophagy or FAO inhibitors with 2DG effectively suppressed the progression of xenografted glioma with hyper-activated mTORC1. CONCLUSIONS This study established an autophagy/lipid degradation/FAO/ATP generation pathway, which might be used in brain cancer cells under energy stresses to maintain high mTORC1 signalling for tumour progression.
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Colardo M, Segatto M, Di Bartolomeo S. Targeting RTK-PI3K-mTOR Axis in Gliomas: An Update. Int J Mol Sci 2021; 22:4899. [PMID: 34063168 PMCID: PMC8124221 DOI: 10.3390/ijms22094899] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022] Open
Abstract
Gliomas are the most common and challenging malignancies of the central nervous system (CNS), due to their infiltrative nature, tendency to recurrence, and poor response to treatments. Indeed, despite the advances in neurosurgical techniques and in radiation therapy, the modest effects of therapy are still challenging. Moreover, tumor recurrence is associated with the onset of therapy resistance; it is therefore critical to identify effective and well-tolerated pharmacological approaches capable of inducing durable responses in the appropriate patient groups. Molecular alterations of the RTK/PI3K/Akt/mTOR signaling pathway are typical hallmarks of glioma, and several clinical trials targeting one or more players of this axis have been launched, showing disappointing results so far, due to the scarce BBB permeability of certain compounds or to the occurrence of resistance/tolerance mechanisms. However, as RTK/PI3K/mTOR is one of the pivotal pathways regulating cell growth and survival in cancer biology, targeting still remains a strong rationale for developing strategies against gliomas. Future rigorous clinical studies, aimed at addressing the tumor heterogeneity, the interaction with the microenvironment, as well as diverse posology adjustments, are needed-which might unravel the therapeutic efficacy and response prediction of an RTK/PI3K/mTOR-based approach.
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Affiliation(s)
| | | | - Sabrina Di Bartolomeo
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, IS, Italy; (M.C.); (M.S.)
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