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Angelakakis G, Varkhedi M, Dabkowski TR, Diaz MJ, Yeagley M, Blanck G. B-cell ALL with SOX11 gene amplification associates with a worse outcome. Cell Cycle 2024; 23:36-42. [PMID: 38350028 PMCID: PMC11005798 DOI: 10.1080/15384101.2024.2306756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 01/12/2024] [Indexed: 02/15/2024] Open
Abstract
Copy number variation (CNV) of certain genes in pediatric Acute Lymphoblastic Leukemia (ALL) impacts gene expression levels. Here, we aimed to investigate the potential prognostic utility of CNVs in pediatric B-ALL and T-ALL. Using genomics files representing cases from the TARGET-ALL-P2 dataset, genes commonly involved in ALL development were analyzed for CNVs. Case IDs representing increased copy numbers for SOX11, PDGFRB, and MDK represented a worse overall survival probability specifically for B-ALL (logrank p=0.021, p=0.0052, p=0.019, respectively). These data support the continued investigation of using CNVs for clinical prognostic biomarkers for pediatric B-ALL.
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Affiliation(s)
- George Angelakakis
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Mallika Varkhedi
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Toriana R. Dabkowski
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Michael J. Diaz
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | | | - George Blanck
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
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Angelakakis G, Serraneau KS, Barker VR, Callahan BM, Tong WL, Zaman S, Huda TI, Blanck G. TCR gene segment usage and HLA alleles that are associated with cancer survival rates also represent racial disparities. Int J Immunogenet 2023; 50:41-47. [PMID: 36585798 DOI: 10.1111/iji.12610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 01/01/2023]
Abstract
Understanding racial disparities in cancer outcomes continues to be a challenge, with likely many factors at play, including socioeconomic factors and genetic polymorphisms impacting basic cellular and molecular functions. Additionally, it is possible that specific combinations of environment and genetics have specific impacts. T-cell receptor (TCR) gene segment usage, HLA allele combinations have been associated with autoimmune and infectious disease courses, and more recently, TCR gene segment usage, HLA allele combinations have been associated with distinct survival outcomes in cancer as well. We examined several such, previously reported cancer-related TCR gene segment usage, HLA allele combinations for evidence of racial disparities, with regard to the prevalence of the combination in different racial groups. Results indicated that TCR gene segment usage, potentially reflecting environmental factors related to previous pathogen exposure, in combination with certain HLA alleles or independently, may represent a novel explanation for racial disparities in cancer outcomes. Overall, at this point, a genetic connection to racial disparities in cancer outcomes is detectable but remains modest, suggesting that other factors, such as socioeconomic factors, remain as important considerations.
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Affiliation(s)
- George Angelakakis
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Karisa S Serraneau
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Vayda R Barker
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Blake M Callahan
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Wei Lue Tong
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Saif Zaman
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Taha I Huda
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - George Blanck
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA.,Immunology Program, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
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Bennett SA, Cobos SN, Mirzakandova M, Fallah M, Son E, Angelakakis G, Rana N, Hugais M, Torrente MP. Trichostatin A Relieves Growth Suppression and Restores Histone Acetylation at Specific Sites in a FUS ALS/FTD Yeast Model. Biochemistry 2021; 60:3671-3675. [PMID: 34788013 PMCID: PMC10041660 DOI: 10.1021/acs.biochem.1c00455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is an incurable neurodegenerative disease that often occurs concurrently with frontotemporal dementia (FTD), another disorder involving progressive neuronal loss. ALS and FTD form a neurodegenerative continuum and share pathological and genetic features. Mutations in a multitude of genes have been linked to ALS/FTD, including FUS. The FUS protein aggregates and forms inclusions within affected neurons. However, the precise mechanisms connecting protein aggregation to neurotoxicity remain under intense investigation. Recent evidence points to the contribution of epigenetics to ALS/FTD. A main epigenetic mechanism involves the post-translational modification (PTM) of histone proteins. We have previously characterized the histone PTM landscape in a FUS ALS/FTD yeast model, finding a decreased level of acetylation on lysine residues 14 and 56 of histone H3. Here, we describe the first report of amelioration of disease phenotypes by controlling histone acetylation on specific modification sites. We show that inhibiting histone deacetylases, via treatment with trichostatin A, suppresses the toxicity associated with FUS overexpression in yeast by preserving the levels of H3K56ac and H3K14ac without affecting the expression or aggregation of FUS. Our data raise the novel hypothesis that the toxic effect of protein aggregation in neurodegeneration is related to its association with altered histone marks. Altogether, we demonstrate the ability to counter the repercussions of protein aggregation on cell survival by preventing specific histone modification changes. Our findings launch a novel mechanistic framework that will enable alternative therapeutic approaches for ALS/FTD and other neurodegenerative diseases.
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Affiliation(s)
- Seth A Bennett
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States.,Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Samantha N Cobos
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | | | - Michel Fallah
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
| | - Elizaveta Son
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
| | - George Angelakakis
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
| | - Navin Rana
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
| | - Muna Hugais
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States
| | - Mariana P Torrente
- Department of Chemistry, Brooklyn College, Brooklyn, New York 11210, United States.,Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States.,Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
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