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Golovina E, Heizer T, Daumova L, Bajecny M, Fontana S, Griggio V, Jones R, Coscia M, Riganti C, Savvulidi Vargova K. MiR-155 deficiency and hypoxia results in metabolism switch in the leukemic B-cells. Cancer Cell Int 2024; 24:251. [PMID: 39020347 PMCID: PMC11256420 DOI: 10.1186/s12935-024-03437-8] [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: 09/17/2023] [Accepted: 07/08/2024] [Indexed: 07/19/2024] Open
Abstract
Hypoxia represents one of the key factors that stimulates the growth of leukemic cells in their niche. Leukemic cells in hypoxic conditions are forced to reprogram their original transcriptome, miRNome, and metabolome. How the coupling of microRNAs (miRNAs)/mRNAs helps to maintain or progress the leukemic status is still not fully described. MiRNAs regulate practically all biological processes within cells and play a crucial role in the development/progression of leukemia. In the present study, we aimed to uncover the impact of hsa-miR-155-5p (miR-155, MIR155HG) on the metabolism, proliferation, and mRNA/miRNA network of human chronic lymphocytic leukemia cells (CLL) in hypoxic conditions. As a model of CLL, we used the human MEC-1 cell line where we deleted mature miR-155 with CRISPR/Cas9. We determined that miR-155 deficiency in leukemic MEC-1 cells results in lower proliferation even in hypoxic conditions in comparison to MEC-1 control cells. Additionally, in MEC-1 miR-155 deficient cells we observed decreased number of populations of cells in S phase. The miR-155 deficiency under hypoxic conditions was accompanied by an increased apoptosis. We detected a stimulatory effect of miR-155 deficiency and hypoxia at the level of gene expression, seen in significant overexpression of EGLN1, GLUT1, GLUT3 in MEC-1 miR-155 deficient cells. MiR-155 deficiency and hypoxia resulted in increase of glucose and lactate uptake. Pyruvate, ETC and ATP were reduced. To conclude, miR-155 deficiency and hypoxia affects glucose and lactate metabolism by stimulating the expression of glucose transporters as GLUT1, GLUT3, and EGLN1 [Hypoxia-inducible factor prolyl hydroxylase 2 (HIF-PH2)] genes in the MEC-1 cells.
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Affiliation(s)
- Elena Golovina
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Tomas Heizer
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Lenka Daumova
- Institute Biocev, First Faculty of Medicine, Charles University, Vestec, Czech Republic
| | - Martin Bajecny
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Simona Fontana
- Oncological Pharmacology Laboratory, Department of Oncology, University of Torino, Torino, Italy
| | - Valentina Griggio
- Department of Molecular Biotechnology and Health Sciences, University of Torino and Division of Hematology, A.O.U. Città Della Salute E Della Scienza Di Torino, Torino, Italy
| | - Rebecca Jones
- Department of Molecular Biotechnology and Health Sciences, University of Torino and Division of Hematology, A.O.U. Città Della Salute E Della Scienza Di Torino, Torino, Italy
| | - Marta Coscia
- Department of Molecular Biotechnology and Health Sciences, University of Torino and Division of Hematology, A.O.U. Città Della Salute E Della Scienza Di Torino, Torino, Italy
| | - Chiara Riganti
- Oncological Pharmacology Laboratory, Department of Oncology, University of Torino, Torino, Italy
| | - Karina Savvulidi Vargova
- Institute of Pathological Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic.
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Pandey S, Singh R, Habib N, Tripathi RM, Kushwaha R, Mahdi AA. Regulation of Hypoxia Dependent Reprogramming of Cancer Metabolism: Role of HIF-1 and Its Potential Therapeutic Implications in Leukemia. Asian Pac J Cancer Prev 2024; 25:1121-1134. [PMID: 38679971 PMCID: PMC11162727 DOI: 10.31557/apjcp.2024.25.4.1121] [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: 08/18/2023] [Accepted: 04/20/2024] [Indexed: 05/01/2024] Open
Abstract
Metabolic reprogramming occurs to meet cancer cells' high energy demand. Its function is essential to the survival of malignancies. Comparing cancer cells to non-malignant cells has revealed that cancer cells have altered metabolism. Several pathways, particularly mTOR, Akt, PI3K, and HIF-1 (hypoxia-inducible factor-1) modulate the metabolism of cancer. Among other aspects of cancer biology, gene expression in metabolism, survival, invasion, proliferation, and angiogenesis of cells are controlled by HIF-1, a vital controller of cellular responsiveness to hypoxia. This article examines various cancer cell metabolisms, metabolic alterations that can take place in cancer cells, metabolic pathways, and molecular aspects of metabolic alteration in cancer cells placing special attention on the consequences of hypoxia-inducible factor and summarising some of their novel targets in the treatment of cancer including leukemia. A brief description of HIF-1α's role and target in a few common types of hematological malignancies (leukemia) is also elucidated in the present article.
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Affiliation(s)
- Sandeep Pandey
- Department of Biochemistry, King George’s Medical University, Lucknow, U.P., India.
| | - Ranjana Singh
- Department of Biochemistry, King George’s Medical University, Lucknow, U.P., India.
| | - Nimra Habib
- Department of Biochemistry, King George’s Medical University, Lucknow, U.P., India.
| | - Ramesh Mani Tripathi
- Department of Biochemistry, King George’s Medical University, Lucknow, U.P., India.
| | - Rashmi Kushwaha
- Department of Pathology, King George’s Medical University, Lucknow, U.P., India.
| | - Abbas Ali Mahdi
- Department of Biochemistry, King George’s Medical University, Lucknow, U.P., India.
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Zhao Y, Xing C, Deng Y, Ye C, Peng H. HIF-1α signaling: Essential roles in tumorigenesis and implications in targeted therapies. Genes Dis 2024; 11:234-251. [PMID: 37588219 PMCID: PMC10425810 DOI: 10.1016/j.gendis.2023.02.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 11/24/2022] [Accepted: 02/12/2023] [Indexed: 08/18/2023] Open
Abstract
The hypoxic microenvironment is an essential characteristic of most malignant tumors. Notably, hypoxia-inducible factor-1 alpha (HIF-1α) is a key regulatory factor of cellular adaptation to hypoxia, and many critical pathways are correlated with the biological activity of organisms via HIF-1α. In the intra-tumoral hypoxic environment, HIF-1α is highly expressed and contributes to the malignant progression of tumors, which in turn results in a poor prognosis in patients. Recently, it has been indicated that HIF-1α involves in various critical processes of life events and tumor development via regulating the expression of HIF-1α target genes, such as cell proliferation and apoptosis, angiogenesis, glucose metabolism, immune response, therapeutic resistance, etc. Apart from solid tumors, accumulating evidence has revealed that HIF-1α is also closely associated with the development and progression of hematological malignancies, such as leukemia, lymphoma, and multiple myeloma. Targeted inhibition of HIF-1α can facilitate an increased sensitivity of patients with malignancies to relevant therapeutic agents. In the review, we elaborated on the basic structure and biological functions of HIF-1α and summarized their current role in various malignancies. It is expected that they will have future potential for targeted therapy.
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Affiliation(s)
- Yan Zhao
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Cheng Xing
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Yating Deng
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Can Ye
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hongling Peng
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Hunan Engineering Research Center of Cell Immunotherapy for Hematopoietic Malignancies, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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Mancikova V, Pesova M, Pavlova S, Helma R, Zavacka K, Hejret V, Taus P, Hynst J, Plevova K, Malcikova J, Pospisilova S. Distinct p53 phosphorylation patterns in chronic lymphocytic leukemia patients are reflected in the activation of circumjacent pathways upon DNA damage. Mol Oncol 2022; 17:82-97. [PMID: 36334078 PMCID: PMC9812841 DOI: 10.1002/1878-0261.13337] [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: 04/22/2022] [Revised: 09/21/2022] [Accepted: 11/04/2022] [Indexed: 11/06/2022] Open
Abstract
TP53 gene abnormalities represent the most important biomarker in chronic lymphocytic leukemia (CLL). Altered protein modifications could also influence p53 function, even in the wild-type protein. We assessed the impact of p53 protein phosphorylations on p53 functions as an alternative inactivation mechanism. We studied p53 phospho-profiles induced by DNA-damaging agents (fludarabine, doxorubicin) in 71 TP53-intact primary CLL samples. Doxorubicin induced two distinct phospho-profiles: profile I (heavily phosphorylated) and profile II (hypophosphorylated). Profile II samples were less capable of activating p53 target genes upon doxorubicin exposure, resembling TP53-mutant samples at the transcriptomic level, whereas standard p53 signaling was triggered in profile I. ATM locus defects were more common in profile II. The samples also differed in the basal activity of the hypoxia pathway: the highest level was detected in TP53-mutant samples, followed by profile II and profile I. Our study suggests that wild-type TP53 CLL cells with less phosphorylated p53 show TP53-mutant-like behavior after DNA damage. p53 hypophosphorylation and the related lower ability to respond to DNA damage are linked to ATM locus defects and the higher basal activity of the hypoxia pathway.
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Affiliation(s)
- Veronika Mancikova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Michaela Pesova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Sarka Pavlova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Robert Helma
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Kristyna Zavacka
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Vaclav Hejret
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic
| | - Petr Taus
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic
| | - Jakub Hynst
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic
| | - Karla Plevova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic,Institute of Medical Genetics and Genomics, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Jitka Malcikova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
| | - Sarka Pospisilova
- Central European Institute of Technology (CEITEC)Masaryk UniversityBrnoCzech Republic,Department of Internal Medicine – Hematology and Oncology, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic,Institute of Medical Genetics and Genomics, Faculty of MedicineMasaryk University and University Hospital BrnoCzech Republic
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Roles of lncRNA LVBU in regulating urea cycle/polyamine synthesis axis to promote colorectal carcinoma progression. Oncogene 2022; 41:4231-4243. [PMID: 35906392 PMCID: PMC9439952 DOI: 10.1038/s41388-022-02413-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 07/03/2022] [Accepted: 07/07/2022] [Indexed: 11/08/2022]
Abstract
Altered expression of Urea Cycle (UC) enzymes occurs in many tumors, resulting a metabolic hallmark termed as UC dysregulation. Polyamines are synthesized from ornithine, and polyamine synthetic genes are elevated in various tumors. However, the underlying deregulations of UC/ polyamine synthesis in cancer remain elusive. Here, we characterized a hypoxia-induced lncRNA LVBU (lncRNA regulation via BCL6/urea cycle) that is highly expressed in colorectal cancer (CRC) and correlates with poor cancer prognosis. Increased LVBU expression promoted CRC cells proliferation, foci formation and tumorigenesis. Further, LVBU regulates urea cycle and polyamine synthesis through BCL6, a negative regulator of p53. Mechanistically, overexpression of LVBU competitively bound miR-10a/miR-34c to protect BCL6 from miR-10a/34c-mediated degradation, which in turn allows BCL6 to block p53-mediated suppression of genes (arginase1 ARG1, ornithine transcarbamylase OTC, ornithine decarboxylase 1 ODC1) involved in UC/polyamine synthesis. Significantly, ODC1 inhibitor attenuated the growth of patient derived xenografts (PDX) that sustain high LVBU levels. Taken together, elevated LVBU can regulate BCL6-p53 signaling axis for systemic UC/polyamine synthesis reprogramming and confers a predilection toward CRC development. Our data demonstrates that further drug development and clinical evaluation of inhibiting UC/polyamine synthesis are warranted for CRC patients with high expression of LVBU.
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Single Nucleotide Polymorphisms of the HIF1A Gene are Associated With Sensitivity of Glucocorticoid Treatment in Pediatric ITP Patients. J Pediatr Hematol Oncol 2022; 45:195-199. [PMID: 35537010 DOI: 10.1097/mph.0000000000002483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND Hypoxia-inducible factor-1α (HIF-1α) plays a crucial role in both innate and adaptive immunity. Emerging evidence indicates that HIF-1α is associated with the inflammation and pathologic activities of autoimmune diseases, suggesting that HIF1α may be involved in immune dysregulation in patients with immune thrombocytopenia (ITP). The purpose of this study was to evaluate whether single nucleotide polymorphisms (SNPs) of the HIF1A gene are associated with susceptibility to ITP and its clinical prognosis including incidence of chronic ITP and glucocorticoid sensitivity. MATERIALS AND METHODS This study involved 197 Chinese ITP pediatric patients (discovery cohort) and 220 healthy controls. The Sequenom MassArray system (Sequenom, San Diego, CA) was used to detect 3 SNPs genotypes in the HIF1A gene: rs11549465, rs1957757, and rs2057482. We also used another ITP cohort (N=127) to validate the significant results of SNPs found in the discovery cohort. RESULTS The frequencies of the three SNPs did not show any significant differences between the ITP and healthy control groups. The CT genotype at rs11549465 was significantly higher in ITP patients sensitive to glucocorticoid treatment than in those insensitive to glucocorticoid treatment (P=0.025). These results were validated using another ITP cohort (N=127, P=0.033). Moreover, the CC genotype was a risk factor for insensitive to GT the odds ratio (95% confidence interval) was 5.96 (5.23-6.69) in standard prednisone (P=0.0069) and 6.35 (5.33-7.37) in high-dose dexamethasone (P=0.04). CONCLUSIONS Although HIF1A gene polymorphisms were not associated with susceptibility to ITP, the CT genotype at rs11549465 was associated with the sensitivity to glucocorticoid treatment of ITP patients, suggesting that the rs11549465 SNP may contribute to the sensitivity of glucocorticoid treatment in pediatric ITP patients.
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El-Shaqanqery HE, Mohamed RH, Sayed AA. Mitochondrial Effects on Seeds of Cancer Survival in Leukemia. Front Oncol 2021; 11:745924. [PMID: 34692527 PMCID: PMC8529120 DOI: 10.3389/fonc.2021.745924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/13/2021] [Indexed: 12/13/2022] Open
Abstract
The cancer metabolic alteration is considered a hallmark and fast becoming a road for therapeutic intervention. Mitochondria have been regarded as essential cell elements that fuel the metabolic needs of most cancer cell types. Leukemia stem cells (LSCs) are a heterogeneous, highly self-renewing, and pluripotent cell population within leukemic cells. The most important source of ATP and metabolites to fulfill the bioenergetics and biosynthetic needs of most cancer stem cells is the mitochondria. In addition, mitochondria have a core role in autophagy and cell death and are the main source of reactive oxygen species (ROS) generation. Overall, growing evidence now shows that mitochondrial activities and pathways have changed to adapt with different types of leukemia, thus mitochondrial metabolism could be targeted for blood malignancy therapy. This review focuses on the function of mitochondria in LSC of the different leukemia types.
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Affiliation(s)
| | - Rania Hassan Mohamed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed A. Sayed
- Genomics Program, Children’s Cancer Hospital Egypt, Cairo, Egypt
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
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