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El Makawy AI, Mabrouk DM, Ibrahim FM, Abdel-Aziem SH, El-Kader HAMA, Youssef DA, Sharaf HA, Mohammed SE. Formulation of quinoa oil-alginate loaded nanoemulsion and its anticancer efficacy as a therapy for chemically induced breast cancer. Mol Biol Rep 2024; 51:705. [PMID: 38824214 DOI: 10.1007/s11033-024-09619-x] [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: 03/10/2024] [Accepted: 05/07/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND Quinoa seeds (Chenopodium quinoa Willd.) have gained interest due to their naturally occurring phytochemicals and antioxidants. They possess potent anticancer properties against human colorectal cancer. METHODS AND RESULTS Fatty acids in quinoa oil were studied using gas chromatography-mass spectrometry. Rats were used to test the acute oral toxicity of the nanoemulsion loaded with sodium alginate. The DPPH radical scavenging method was employed to assess the nanoemulsion's ability to scavenge free radicals. It was examined the in vivo anticancer potential of quinoa oil nanoemulsion on rats with breast cancer induced by 7, 12-dimethylbenz (a) anthracene (DMBA). DMBA-breast cancer models received daily quinoa oil nanoemulsions for 30 days. The anticancer effect of the nanoemulsion was assessed by measuring ROS, protein carbonyl, gene expression of anti-oncogenes, and histopathological analysis. Supplying quinoa oil nanoemulsion significantly reduced the increase in serum ROS and PC levels induced in breast cancer tissue. The expression levels of antioncogenes in breast cancer tissue were decreased by the quinoa oil nanoemulsion. Nanoemulsions also improved the cellular morphology of breast tumors. CONCLUSION The study results indicate that quinoa oil nanoemulsion has anticancer activity against breast cancer, effectively modulating oxidative stress markers, anti-oncogene expressions, and tissue architecture. It can be inferred from the results that quinoa oil nanoemulsion is a chemoprotective medication that may hinder breast cancer progression in rats.
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Affiliation(s)
- Aida I El Makawy
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt.
| | - Dalia M Mabrouk
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Faten M Ibrahim
- Medicinal and Aromatic Plants Research Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Sekena H Abdel-Aziem
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Heba A M Abd El-Kader
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Dalia A Youssef
- Pests and plant protection Department, Agricultural and Biology Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Hafiza A Sharaf
- Pathology Department, Medicine and Clinical Studies Research Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
| | - Shaimaa E Mohammed
- Food Sciences and Nutrition Department, Food Industries and Nutrition Research institute, National Research Centre, 33 El Bohouth St., Dokki, Giza, P. O. 12622, Egypt
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Heng BL, Wu FY, Tong XY, Zou GJ, Ouyang JM. Corn Silk Polysaccharide Reduces the Risk of Kidney Stone Formation by Reducing Oxidative Stress and Inhibiting COM Crystal Adhesion and Aggregation. ACS OMEGA 2024; 9:19236-19249. [PMID: 38708219 PMCID: PMC11064203 DOI: 10.1021/acsomega.4c00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/24/2024] [Accepted: 02/29/2024] [Indexed: 05/07/2024]
Abstract
The aim of this study is to explore the inhibition of nanocalcium oxalate monohydrate (nano-COM) crystal adhesion and aggregation on the HK-2 cell surface after the protection of corn silk polysaccharides (CSPs) and the effect of carboxyl group (-COOH) content and polysaccharide concentration. METHOD HK-2 cells were damaged by 100 nm COM crystals to build an injury model. The cells were protected by CSPs with -COOH contents of 3.92% (CSP0) and 16.38% (CCSP3), respectively. The changes in the biochemical indexes of HK-2 cells and the difference in adhesion amount and aggregation degree of nano-COM on the cell surface before and after CSP protection were detected. RESULTS CSP0 and CCSP3 protection can obviously inhibit HK-2 cell damage caused by nano-COM crystals, restore cytoskeleton morphology, reduce intracellular ROS level, inhibit phosphoserine eversion, restore the polarity of the mitochondrial membrane potential, normalize the cell cycle process, and reduce the expression of adhesion molecules, OPN, Annexin A1, HSP90, HAS3, and CD44 on the cell surface. Finally, the adhesion and aggregation of nano-COM crystals on the cell surface were effectively inhibited. The carboxymethylated CSP3 exhibited a higher protective effect on cells than the original CSP0, and cell viability was further improved with the increase in polysaccharide concentration. CONCLUSIONS CSPs can protect HK-2 cells from calcium oxalate crystal damage and effectively reduce the adhesion and aggregation of nano-COM crystals on the cell surface, which is conducive to inhibiting the formation of calcium oxalate kidney stones.
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Affiliation(s)
- Bao-Li Heng
- Yingde
Center, Institute of Kidney Surgery, Jinan
University, Guangdong 510000, China
- Department
of Urology, People’s Hospital of
Yingde City, Yingde 513000, China
| | - Fan-Yu Wu
- Yingde
Center, Institute of Kidney Surgery, Jinan
University, Guangdong 510000, China
- Department
of Urology, People’s Hospital of
Yingde City, Yingde 513000, China
| | - Xin-Yi Tong
- Institute
of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Guo-Jun Zou
- Institute
of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
| | - Jian-Ming Ouyang
- Institute
of Biomineralization and Lithiasis Research, Jinan University, Guangzhou 510632, China
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3
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Bhardwaj A, Liyanage SI, Weaver DF. Cancer and Alzheimer's Inverse Correlation: an Immunogenetic Analysis. Mol Neurobiol 2023; 60:3086-3099. [PMID: 36797545 DOI: 10.1007/s12035-023-03260-8] [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: 12/06/2022] [Accepted: 02/05/2023] [Indexed: 02/18/2023]
Abstract
Numerous studies have demonstrated an inverse link between cancer and Alzheimer's disease (AD), with data suggesting that people with Alzheimer's have a decreased risk of cancer and vice versa. Although other studies have investigated mechanisms to explain this relationship, the connection between these two diseases remains largely unexplained. Processes seen in cancer, such as decreased apoptosis and increased cell proliferation, seem to be reversed in AD. Given the need for effective therapeutic strategies for AD, comparisons with cancer could yield valuable insights into the disease process and perhaps result in new treatments. Here, through a review of existing literature, we compared the expressions of genes involved in cell proliferation and apoptosis to establish a genetic basis for the reciprocal association between AD and cancer. We discuss an array of genes involved in the aforementioned processes, their relevance to both diseases, and how changes in those genes produce varying effects in either disease.
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Affiliation(s)
- Aditya Bhardwaj
- Krembil Discovery Tower, Krembil Brain Institute, Toronto Western Hospital, University Health Network, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - S Imindu Liyanage
- Krembil Discovery Tower, Krembil Brain Institute, Toronto Western Hospital, University Health Network, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - Donald F Weaver
- Krembil Discovery Tower, Krembil Brain Institute, Toronto Western Hospital, University Health Network, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada.
- Departments of Medicine and Chemistry, University of Toronto, Toronto, Canada.
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Saha C, Bojdo J, Dunne NJ, Duary RK, Buckley N, McCarthy HO. Nucleic acid vaccination strategies for ovarian cancer. Front Bioeng Biotechnol 2022; 10:953887. [PMID: 36420446 PMCID: PMC9677957 DOI: 10.3389/fbioe.2022.953887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 10/26/2022] [Indexed: 09/19/2023] Open
Abstract
High grade serous carcinoma (HGSC) is one of the most lethal ovarian cancers that is characterised by asymptomatic tumour growth, insufficient knowledge of malignant cell origin and sub-optimal detection. HGSC has been recently shown to originate in the fallopian tube and not in the ovaries. Conventional treatments such as chemotherapy and surgery depend upon the stage of the disease and have resulted in higher rates of relapse. Hence, there is a need for alternative treatments. Differential antigen expression levels have been utilised for early detection of the cancer and could be employed in vaccination strategies using nucleic acids. In this review the different vaccination strategies in Ovarian cancer are discussed and reviewed. Nucleic acid vaccination strategies have been proven to produce a higher CD8+ CTL response alongside CD4+ T-cell response when compared to other vaccination strategies and thus provide a good arena for antitumour immune therapy. DNA and mRNA need to be delivered into the intracellular matrix. To overcome ineffective naked delivery of the nucleic acid cargo, a suitable delivery system is required. This review also considers the suitability of cell penetrating peptides as a tool for nucleic acid vaccine delivery in ovarian cancer.
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Affiliation(s)
- Chayanika Saha
- School of Pharmacy, Queen’s University of Belfast, Belfast, United Kingdom
| | - James Bojdo
- School of Pharmacy, Queen’s University of Belfast, Belfast, United Kingdom
| | - Nicholas J. Dunne
- School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
- Centre for Medical Engineering Research, School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
- Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland
- Advanced Manufacturing Research Centre (I-Form), School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland
- Advanced Processing Technology Research Centre, Dublin City University, Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Raj Kumar Duary
- Department of Food Engineering and Technology, Tezpur University, Tezpur, India
| | - Niamh Buckley
- School of Pharmacy, Queen’s University of Belfast, Belfast, United Kingdom
| | - Helen O. McCarthy
- School of Pharmacy, Queen’s University of Belfast, Belfast, United Kingdom
- School of Chemical Sciences, Dublin City University, Dublin, Ireland
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DNA binding and cleavage, BRCA1 gene interaction, antiglycation and anticancer studies of transition metal complexes of sulfonamides. Mol Divers 2022; 26:3093-3113. [PMID: 35182295 DOI: 10.1007/s11030-021-10366-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/13/2021] [Indexed: 10/19/2022]
Abstract
A series of 4-((4-methylphenylsulfonamido)methyl)cyclohexanecarboxylic acid (NaMSCCA) transition metal complexes [Cu(II), Zn(II), Ni(II), Mn(II), and Co(II)] have been synthesized by precipitation method. The characterization was done by physical techniques, FT-IR spectroscopy, mass spectrometry, and NMR spectroscopy. The molecular structures of nickel (II) AZ-3 and cobalt (II) AZ-5 complexes were determined by the X-ray diffraction technique and found to crystallize in the triclinic space group P-1. The coordination geometry around the central nickel (AZ-3) and cobalt (AZ-5) atoms was square planar bipyramidal. Molecular docking was performed with duplex DNA of sequence d(CGCGAATTCGCG)2 DNA to determine the probable binding mode of compounds. Then these synthesized compounds were used to perform DNA cleavage activity through the agarose gel electrophoresis method. Among the compounds, compounds AZ-1 and AZ-2 exhibited good nuclease activity. The DNA sequence of breast-cancer suppressor gene 1 (BRCA1) was amplified through PCR and interaction studies of compounds AZ-1 and AZ-2 were performed through gel electrophoresis and fluorescence emission spectroscopy. The expression analysis of the BRCA1 gene was also performed to quantify the expression relative fold change (2^-(∆∆CT)) after treatment with compounds. All synthesized compounds were evaluated for their antioxidant and antiglycation activities and AZ-2 exhibited excellent results. The molecular docking study of these compounds was performed against the protein structure of advanced glycation end products to support the experimental results. Anticancer activity of compounds was performed through MTT assay. Copper and zinc complexes depicted the highest anticancer activity against human breast adenocarcinoma (MCF7) and human corneal epithelial cell (HCEC) cell lines.
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El makawy AI, Mabrouk DM, Mohammed SE, Abdel-Aziem SH, EL-Kader HAA, Sharaf HA, Youssef DA, Ibrahim FM. The suppressive role of nanoencapsulated chia oil against DMBA-induced breast cancer through oxidative stress repression and tumor genes expression modulation in rats. Mol Biol Rep 2022; 49:10217-10228. [PMID: 36063350 PMCID: PMC9618492 DOI: 10.1007/s11033-022-07885-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 08/17/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Chia oil is high in omega-3 fatty acids, which have been linked to a lower risk of many diseases, including cancer. Oil encapsulation is a method that holds promise for maintaining oil content while enhancing solubility and stability. The purpose of this study is to prepare nanoencapsulated Chia oil and investigate its suppressive effects on rat chemically induced breast cancer. METHODS The oil was extracted from commercial Chia seeds and their fatty acids were analyzed using Gas Chromatography-mass spectrometry (GC/MS). Sodium alginate was used as a loading agent to create the Chia oil nanocapsules. The DPPH assay was used to assess the oil nanocapsules' capacity to scavenge free radicals. Breast cancer induction was done by single dose subcutaneously administration of 80 mg/kg dimethylbenz (a) anthracene (DMBA). Models of breast cancer were given Chia oil nanocapsules orally for one month at doses of 100 and 200 mg/kg. Through measuring intracellular reactive oxygen species (ROS) and protein carbonyl, assessing the gene expression of tumor suppressor genes (BRCA 1 & 2, TP53), and conducting histopathological analysis, the suppressive effect of Chia oil nanocapsules was examined. RESULTS The increase in ROS and PC levels brought on by DMBA was significantly decreased by the administration of Chia oil nanocapsules. In tumor tissue from rats given Chia oil nanocapsules, the mRNA expression levels of BRCA1, BRCA2, and TP53 were controlled Histopathological analysis clarified that the tissue architecture of breast tumors was improved by nanocapsules management. CONCLUSIONS These findings demonstrate the ability of Chia oil nanocapsules to inhibit cancer cells in the rat breast.
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Affiliation(s)
- Aida I. El makawy
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Dalia M. Mabrouk
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Shaimaa E. Mohammed
- Nutrition and Food Sciences Department, Food Industries and Nutrition Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Sekena H. Abdel-Aziem
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Heba A. Abd EL-Kader
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Hafiza A. Sharaf
- Pathology Department, Medical Research and Clinical Studies Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Dalia A. Youssef
- Pests and Plant Protection Department, Agricultural and Biology Research Institute, National Research Centre, Giza, P.O.12622, Egypt
| | - Faten M. Ibrahim
- Medicinal and Aromatic Plants Research Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Giza, P.O.12622, Egypt
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Gupta B, Somasundaram K. BRCA role changes with association: tissue-specific impact on the prognosis. Oncotarget 2021; 12:2541-2542. [PMID: 34966485 PMCID: PMC8711571 DOI: 10.18632/oncotarget.28149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/01/2021] [Indexed: 11/25/2022] Open
Affiliation(s)
- Bhavana Gupta
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore-560012, India
| | - Kumaravel Somasundaram
- Department of Microbiology and Cell Biology, Indian Institute of Science, Bangalore-560012, India
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8
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Boldrini L, Faviana P, Galli L, Paolieri F, Erba PA, Bardi M. Multi-Dimensional Scaling Analysis of Key Regulatory Genes in Prostate Cancer Using the TCGA Database. Genes (Basel) 2021; 12:1350. [PMID: 34573332 PMCID: PMC8468120 DOI: 10.3390/genes12091350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/20/2021] [Accepted: 08/26/2021] [Indexed: 12/24/2022] Open
Abstract
Prostate cancer (PC) is a polygenic disease with multiple gene interactions. Therefore, a detailed analysis of its epidemiology and evaluation of risk factors can help to identify more accurate predictors of aggressive disease. We used the transcriptome data from a cohort of 243 patients from the Cancer Genome Atlas (TCGA) database. Key regulatory genes involved in proliferation activity, in the regulation of stress, and in the regulation of inflammation processes of the tumor microenvironment were selected to test a priori multi-dimensional scaling (MDS) models and create a combined score to better predict the patients' survival and disease-free intervals. Survival was positively correlated with cortisol expression and negatively with Mini-Chromosome Maintenance 7 (MCM7) and Breast-Related Cancer Antigen2 (BRCA2) expression. The disease-free interval was negatively related to the expression of enhancer of zeste homolog 2 (EZH2), MCM7, BRCA2, and programmed cell death 1 ligand 1 (PD-L1). MDS suggested two separate pathways of activation in PC. Within these two dimensions three separate clusters emerged: (1) cortisol and brain-derived neurotrophic factor BDNF, (2) PD-L1 and cytotoxic-T-lymphocyte-associated protein 4 (CTL4); (3) and finally EZH2, MCM7, BRCA2, and c-Myc. We entered the three clusters of association shown in the MDS in several Kaplan-Meier analyses. It was found that only Cluster 3 was significantly related to the interval-disease free, indicating that patients with an overall higher activity of regulatory genes of proliferation and DNA repair had a lower probability to have a longer disease-free time. In conclusion, our data study provided initial evidence that selecting patients with a high grade of proliferation and DNA repair activity could lead to an early identification of an aggressive PC with a potentials for metastatic development.
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Affiliation(s)
- Laura Boldrini
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy;
| | - Pinuccia Faviana
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy;
| | - Luca Galli
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.G.); (F.P.); (P.A.E.)
| | - Federico Paolieri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.G.); (F.P.); (P.A.E.)
| | - Paola Anna Erba
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (L.G.); (F.P.); (P.A.E.)
| | - Massimo Bardi
- Department of Psychology & Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, USA;
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Panagopoulou M, Karaglani M, Manolopoulos VG, Iliopoulos I, Tsamardinos I, Chatzaki E. Deciphering the Methylation Landscape in Breast Cancer: Diagnostic and Prognostic Biosignatures through Automated Machine Learning. Cancers (Basel) 2021; 13:1677. [PMID: 33918195 PMCID: PMC8037759 DOI: 10.3390/cancers13071677] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/23/2021] [Accepted: 03/31/2021] [Indexed: 12/24/2022] Open
Abstract
DNA methylation plays an important role in breast cancer (BrCa) pathogenesis and could contribute to driving its personalized management. We performed a complete bioinformatic analysis in BrCa whole methylome datasets, analyzed using the Illumina methylation 450 bead-chip array. Differential methylation analysis vs. clinical end-points resulted in 11,176 to 27,786 differentially methylated genes (DMGs). Innovative automated machine learning (AutoML) was employed to construct signatures with translational value. Three highly performing and low-feature-number signatures were built: (1) A 5-gene signature discriminating BrCa patients from healthy individuals (area under the curve (AUC): 0.994 (0.982-1.000)). (2) A 3-gene signature identifying BrCa metastatic disease (AUC: 0.986 (0.921-1.000)). (3) Six equivalent 5-gene signatures diagnosing early disease (AUC: 0.973 (0.920-1.000)). Validation in independent patient groups verified performance. Bioinformatic tools for functional analysis and protein interaction prediction were also employed. All protein encoding features included in the signatures were associated with BrCa-related pathways. Functional analysis of DMGs highlighted the regulation of transcription as the main biological process, the nucleus as the main cellular component and transcription factor activity and sequence-specific DNA binding as the main molecular functions. Overall, three high-performance diagnostic/prognostic signatures were built and are readily available for improving BrCa precision management upon prospective clinical validation. Revisiting archived methylomes through novel bioinformatic approaches revealed significant clarifying knowledge for the contribution of gene methylation events in breast carcinogenesis.
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Affiliation(s)
- Maria Panagopoulou
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, GR-68100 Alexandroupolis, Greece; (M.P.); (M.K.); (V.G.M.)
| | - Makrina Karaglani
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, GR-68100 Alexandroupolis, Greece; (M.P.); (M.K.); (V.G.M.)
| | - Vangelis G. Manolopoulos
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, GR-68100 Alexandroupolis, Greece; (M.P.); (M.K.); (V.G.M.)
| | - Ioannis Iliopoulos
- Department of Basic Sciences, School of Medicine, University of Crete, GR-71003 Heraklion, Greece;
| | - Ioannis Tsamardinos
- JADBio, Gnosis Data Analysis PC, Science and Technology Park of Crete, GR-70013 Heraklion, Greece;
- Department of Computer Science, University of Crete, GR-70013 Heraklion, Greece
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology–Hellas, GR-70013 Heraklion, Greece
| | - Ekaterini Chatzaki
- Laboratory of Pharmacology, Medical School, Democritus University of Thrace, GR-68100 Alexandroupolis, Greece; (M.P.); (M.K.); (V.G.M.)
- Institute of Agri-Food and Life Sciences, Hellenic Mediterranean University Research Centre, GR-71410 Heraklion, Greece
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Moslehi R, Tsao HS, Zeinomar N, Stagnar C, Fitzpatrick S, Dzutsev A. Integrative genomic analysis implicates ERCC6 and its interaction with ERCC8 in susceptibility to breast cancer. Sci Rep 2020; 10:21276. [PMID: 33277540 PMCID: PMC7718875 DOI: 10.1038/s41598-020-77037-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023] Open
Abstract
Up to 30% of all breast cancer cases may be inherited and up to 85% of those may be due to segregation of susceptibility genes with low and moderate risk [odds ratios (OR) ≤ 3] for (mostly peri- and post-menopausal) breast cancer. The majority of low/moderate-risk genes, particularly those with minor allele frequencies (MAF) of < 30%, have not been identified and/or validated due to limitations of conventional association testing approaches, which include the agnostic nature of Genome Wide Association Studies (GWAS). To overcome these limitations, we used a hypothesis-driven integrative genomics approach to test the association of breast cancer with candidate genes by analyzing multi-omics data. Our candidate-gene association analyses of GWAS datasets suggested an increased risk of breast cancer with ERCC6 (main effect: 1.29 ≤ OR ≤ 2.91, 0.005 ≤ p ≤ 0.04, 11.8 ≤ MAF ≤ 40.9%), and implicated its interaction with ERCC8 (joint effect: 3.03 ≤ OR ≤ 5.31, 0.01 ≤ pinteraction ≤ 0.03). We found significant upregulation of ERCC6 (p = 7.95 × 10-6) and ERCC8 (p = 4.67 × 10-6) in breast cancer and similar frequencies of ERCC6 (1.8%) and ERCC8 (0.3%) mutations in breast tumors to known breast cancer susceptibility genes such as BLM (1.9%) and LSP1 (0.3%). Our integrative genomics approach suggests that ERCC6 may be a previously unreported low- to moderate-risk breast cancer susceptibility gene, which may also interact with ERCC8.
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Affiliation(s)
- Roxana Moslehi
- School of Public Health, Cancer Research Center, University at Albany, State University of New York (SUNY), Albany, NY, 12144, USA.
| | - Hui-Shien Tsao
- School of Public Health, Cancer Research Center, University at Albany, State University of New York (SUNY), Albany, NY, 12144, USA
- New York State Office of Children and Family Services, New York, USA
| | - Nur Zeinomar
- School of Public Health, Cancer Research Center, University at Albany, State University of New York (SUNY), Albany, NY, 12144, USA
- Mailman School of Public Health, Columbia University, New York, USA
| | - Cristy Stagnar
- School of Public Health, Cancer Research Center, University at Albany, State University of New York (SUNY), Albany, NY, 12144, USA
- Drukier Institute for Children's Health, Weill Cornell Medicine, New York, USA
| | - Sean Fitzpatrick
- School of Public Health, Cancer Research Center, University at Albany, State University of New York (SUNY), Albany, NY, 12144, USA
| | - Amiran Dzutsev
- Cancer Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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Ellison M, Mittal M, Chaudhuri M, Chaudhuri G, Misra S. The role of the redox/miR-6855-3p/PRDX5A axis in reversing SLUG-mediated BRCA2 silencing in breast cancer cells. Cell Commun Signal 2020; 18:15. [PMID: 31987042 PMCID: PMC6986021 DOI: 10.1186/s12964-019-0493-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/04/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND We have previously shown that the zinc finger transcription repressor SNAI2 (SLUG) represses tumor suppressor BRCA2-expression in non-dividing cells by binding to the E2-box upstream of the transcription start site. However, it is unclear how proliferating breast cancer (BC) cells that has higher oxidation state, overcome this repression. In this study, we provide insight into the mechanism of de-silencing of BRCA2 gene expression by PRDX5A, which is the longest member of the peroxiredoxin5 family, in proliferating breast cancer cells. METHODS We used cell synchronization and DNA affinity pulldown to analyze PRDX5A binding to the BRCA2 silencer. We used oxidative stress and microRNA (miRNA) treatments to study nuclear localization of PRDX5A and its impact on BRCA2-expression. We validated our findings using mutational, reporter assay, and immunofluorescence analyses. RESULTS Under oxidative stress, proliferating BC cells express PRDX5 isoform A (PRDX5A). In the nucleus, PRDX5A binds to the BRCA2 silencer near the E2-box, displacing SLUG and enhancing BRCA2-expression. Nuclear PRDX5A is translated from the second AUG codon in frame to the first AUG codon in the PRDX5A transcript that retains all exons. Mutation of the first AUG increases nuclear localization of PRDX5A in MDA-MB-231 cells, but mutation of the second AUG decreases it. Increased mitronic hsa-miRNA-6855-3p levels under oxidative stress renders translation from the second AUG preferable. Mutational analysis using reporter assay uncovered a miR-6855-3p binding site between the first and second AUG codon in the PRDX5A transcript. miR-6855-3p mimic increases accumulation of nuclear PRDX5A and inhibits reporter gene translation. CONCLUSION Oxidative stress increases miR-6855-3p expression and binding to the inter-AUG sequence of the PRDX5A transcript, promoting translation of nuclear PRDX5A. Nuclear PRDX5A relieves SLUG-mediated BRCA2 silencing, resulting in increased BRCA2-expression.
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Affiliation(s)
- Marshall Ellison
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Mukul Mittal
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Minu Chaudhuri
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Gautam Chaudhuri
- Department of Microbiology, Immunology, and Physiology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Smita Misra
- School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, 37208, USA. .,Center for Women's Health Research (CWHR), Meharry Medical College, Nashville, TN, 37208, USA.
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San-Millán I, Julian CG, Matarazzo C, Martinez J, Brooks GA. Is Lactate an Oncometabolite? Evidence Supporting a Role for Lactate in the Regulation of Transcriptional Activity of Cancer-Related Genes in MCF7 Breast Cancer Cells. Front Oncol 2020; 9:1536. [PMID: 32010625 PMCID: PMC6971189 DOI: 10.3389/fonc.2019.01536] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/19/2019] [Indexed: 12/30/2022] Open
Abstract
Lactate is a ubiquitous molecule in cancer. In this exploratory study, our aim was to test the hypothesis that lactate could function as an oncometabolite by evaluating whether lactate exposure modifies the expression of oncogenes, or genes encoding transcription factors, cell division, and cell proliferation in MCF7 cells, a human breast cancer cell line. Gene transcription was compared between MCF7 cells incubated in (a) glucose/glutamine-free media (control), (b) glucose-containing media to stimulate endogenous lactate production (replicating some of the original Warburg studies), and (c) glucose-containing media supplemented with L-lactate (10 and 20 mM). We found that both endogenous, glucose-derived lactate and exogenous, lactate supplementation significantly affected the transcription of key oncogenes (MYC, RAS, and PI3KCA), transcription factors (HIF1A and E2F1), tumor suppressors (BRCA1, BRCA2) as well as cell cycle and proliferation genes involved in breast cancer (AKT1, ATM, CCND1, CDK4, CDKN1A, CDK2B) (0.001 < p < 0.05 for all genes). Our findings support the hypothesis that lactate acts as an oncometabolite in MCF7 cells. Further research is necessary on other cell lines and biopsy cultures to show generality of the findings and reveal the mechanisms by which dysregulated lactate metabolism could act as an oncometabolite in carcinogenesis.
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Affiliation(s)
- Iñigo San-Millán
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO, United States
- Department of Human Physiology and Nutrition, University of Colorado, Colorado Springs, CO, United States
| | - Colleen G Julian
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, United States
| | - Christopher Matarazzo
- Department of Medicine, University of Colorado School of Medicine, Aurora, CO, United States
| | - Janel Martinez
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Colorado School of Medicine, Aurora, CO, United States
| | - George A Brooks
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, United States
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Al Diffalha S, Sexton KC, Watson PH, Grizzle WE. The Importance of Human Tissue Bioresources in Advancing Biomedical Research. Biopreserv Biobank 2019; 17:209-212. [PMID: 31188626 PMCID: PMC7061295 DOI: 10.1089/bio.2019.0039] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Medical research advances enabling the realization of precision medicine have relied heavily on the biospecimens provided by bioresources to identify the targets and biomarkers that are the focus of the new generation of more effective molecular-based therapies for specific subtypes of diseases. Through the biospecimens they have distributed, bioresources have permitted subtypes of cancers to be identified and molecular features of these subtypes to be effectively targeted. A prototype example is the human epidermal growth factor receptor type 2 (HER2), which currently is targeted in breast and gastric cancers. In the future, the use of biospecimens from bioresources will continue to increase the understanding of the molecular actions of drugs and how drugs may be more or less active in subpopulations of patients. Although the biospecimen inventories of the initial forms of bioresources may not have always been optimally planned and, therefore, utilized in supporting biomedical research, bioresources are evolving and overall, bioresource inventories and increasingly their prospective collection capabilities will continue to be a critical component of the research infrastructure.
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Affiliation(s)
- Sameer Al Diffalha
- Department of Pathology, The University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Katherine C. Sexton
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Peter H. Watson
- British Columbia Cancer-Victoria Center and University of British Columbia, Victoria, Canada
| | - William E. Grizzle
- Department of Pathology, The University of Alabama at Birmingham, Birmingham, Alabama
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama
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