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Breveglieri G, Salvatori F, Finotti A, Cosenza LC, Zuccato C, Bianchi N, Breda L, Rivella S, Bresciani A, Bisbocci M, Borgatti M, Gambari R. Development and characterization of cellular biosensors for HTS of erythroid differentiation inducers targeting the transcriptional activity of γ-globin and β-globin gene promoters. Anal Bioanal Chem 2019; 411:7669-7680. [PMID: 31273412 DOI: 10.1007/s00216-019-01959-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/17/2019] [Accepted: 06/04/2019] [Indexed: 02/07/2023]
Abstract
There is a general agreement that pharmacologically mediated stimulation of human γ-globin gene expression and increase of production of fetal hemoglobin (HbF) is a potential therapeutic approach in the experimental therapy of β-thalassemia and sickle cell anemia. Here, we report the development and characterization of cellular biosensors carrying enhanced green fluorescence protein (EGFP) and red fluorescence protein (RFP) genes under the control of the human γ-globin and β-globin gene promoters, respectively; these dual-reporter cell lines are suitable to identify the induction ability of screened compounds on the transcription in erythroid cells of γ-globin and β-globin genes by FACS with efficiency and reproducibility. Our experimental system allows to identify (a) HbF inducers stimulating to different extent the activity of the γ-globin gene promoter and (b) molecules that stimulate also the activity of the β-globin gene promoter. A good correlation does exist between the results obtained by using the EGFP/RFP clones and experiments performed on erythroid precursor cells from β-thalassemic patients, confirming that this experimental system can be employed for high-throughput screening (HTS) analysis. Finally, we have demonstrated that this dual-reporter cell line can be used for HTS in 384-well plate, in order to identify novel HbF inducers for the therapy of β-thalassemia and sickle cell anemia. Graphical abstract.
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Affiliation(s)
- Giulia Breveglieri
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy.,Biotechnology Center, University of Ferrara, 44121, Ferrara, Italy
| | - Francesca Salvatori
- Department of Chemical and Pharmaceutical Sciences, University of Ferrara, 44121, Ferrara, Italy
| | - Alessia Finotti
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy
| | - Lucia Carmela Cosenza
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy.,Biotechnology Center, University of Ferrara, 44121, Ferrara, Italy
| | - Cristina Zuccato
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy
| | - Nicoletta Bianchi
- Department of Biomedical Sciences and Specialist Surgery, Section of Biochemistry, Molecular Biology and Medical Genetics, University of Ferrara, 44121, Ferrara, Italy
| | - Laura Breda
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Stefano Rivella
- Hematology Division, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | | | | | - Monica Borgatti
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy.,Biotechnology Center, University of Ferrara, 44121, Ferrara, Italy
| | - Roberto Gambari
- Department of Life Sciences and Biotechnology, Section of Biochemistry and Molecular Biology, University of Ferrara, Via Fossato di Mortara 74, 44121, Ferrara, Italy.
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Saki N, Abroun S, Soleimani M, Kavianpour M, Shahjahani M, Mohammadi-Asl J, Hajizamani S. MicroRNA Expression in β-Thalassemia and Sickle Cell Disease: A Role in The Induction of Fetal Hemoglobin. CELL JOURNAL 2016; 17:583-92. [PMID: 26862517 PMCID: PMC4746408 DOI: 10.22074/cellj.2016.3808] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 01/11/2015] [Indexed: 12/13/2022]
Abstract
Today the regulatory role of microRNAs (miRs) is well characterized in many diverse cel-
lular processes. MiR-based regulation is categorized under epigenetic regulatory mecha-
nisms. These small non-coding RNAs participate in producing and maturing erythrocytes,
expressing hematopoietic factors and regulating expression of globin genes by post-tran-
scriptional gene silencing. The changes in expression of miRs (miR-144/-320/-451/-503)
in thalassemic/sickle cells compared with normal erythrocytes may cause clinical severity.
According to the suppressive effects of certain miRs (miR-15a/-16-1/-23a/-26b/-27a/-451)
on a number of transcription factors [myeloblastosis oncogene (MYB), B-cell lymphoma
11A (BCL11A), GATA1, Krüppel-like factor 3 (KLF3) and specificity protein 1 (Sp1)] during
β globin gene expression, It has been possible to increasing γ globin gene expression
and fetal hemoglobin (HbF) production. Therefore, this strategy can be used as a novel
therapy in infusing HbF and improving clinical complications of patients with hemoglobi-
nopathies.
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Affiliation(s)
- Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Saeid Abroun
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Maria Kavianpour
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Shahjahani
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Javad Mohammadi-Asl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Saeideh Hajizamani
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Peterson KR, Fedosyuk H, Harju-Baker S. LCR 5' hypersensitive site specificity for globin gene activation within the active chromatin hub. Nucleic Acids Res 2012; 40:11256-69. [PMID: 23042246 PMCID: PMC3526258 DOI: 10.1093/nar/gks900] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The DNaseI hypersensitive sites (HSs) of the human β-globin locus control region (LCR) may function as part of an LCR holocomplex within a larger active chromatin hub (ACH). Differential activation of the globin genes during development may be controlled in part by preferential interaction of each gene with specific individual HSs during globin gene switching, a change in conformation of the LCR holocomplex, or both. To distinguish between these possibilities, human β-globin locus yeast artificial chromosome (β-YAC) lines were produced in which the ε-globin gene was replaced with a second marked β-globin gene (βm), coupled to an intact LCR, a 5′HS3 complete deletion (5′ΔHS3) or a 5′HS3 core deletion (5′ΔHS3c). The 5′ΔHS3c mice expressed βm-globin throughout development; γ-globin was co-expressed in the embryonic yolk sac, but not in the fetal liver; and wild-type β-globin was co-expressed in adult mice. Although the 5′HS3 core was not required for βm-globin expression, previous work showed that the 5′HS3 core is necessary for ε-globin expression during embryonic erythropoiesis. A similar phenotype was observed in 5′HS complete deletion mice, except βm-globin expression was higher during primitive erythropoiesis and γ-globin expression continued into fetal definitive erythropoiesis. These data support a site specificity model of LCR HS-globin gene interaction.
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Affiliation(s)
- Kenneth R Peterson
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA.
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Woon Kim Y, Kim S, Geun Kim C, Kim A. The distinctive roles of erythroid specific activator GATA-1 and NF-E2 in transcription of the human fetal γ-globin genes. Nucleic Acids Res 2011; 39:6944-55. [PMID: 21609963 PMCID: PMC3167640 DOI: 10.1093/nar/gkr253] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
GATA-1 and NF-E2 are erythroid specific activators that bind to the β-globin locus. To explore the roles of these activators in transcription of the human fetal stage specific γ-globin genes, we reduced GATA-1 and p45/NF-E2 using shRNA in erythroid K562 cells. GATA-1 or p45/NF-E2 knockdown inhibited the transcription of the γ-globin genes, hypersensitive site (HS) formation in the LCR and chromatin loop formation of the β-globin locus, but histone acetylation across the locus was decreased only in the case of GATA-1 knockdown. In p45/NF-E2 knockdown cells, GATA-1 binding was maintained at the LCR HSs and γ-globin promoter, but NF-E2 binding at the LCR HSs was reduced by GATA-1 knockdown regardless of the amount of p45/NF-E2 in K562 cells. These results indicate that histone acetylation is dependent on GATA-1 binding, but the binding of GATA-1 is not sufficient for the γ-globin transcription, HS formation and chromatin loop formation and NF-E2 is required. This idea is supported by the distinctive binding pattern of CBP and Brg1 in the β-globin locus. Furthermore GATA-1-dependent loop formation between HS5 and 3′HS1 suggests correlation between histone modifications and chromatin looping.
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Affiliation(s)
- Yea Woon Kim
- Department of Molecular Biology, College of Natural Sciences, Pusan National University, Pusan 609-735, Korea
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Hematopoietic stem cell engraftment by early-stage in utero transplantation in a mouse model. Exp Mol Pathol 2009; 87:173-7. [PMID: 19666020 DOI: 10.1016/j.yexmp.2009.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2009] [Accepted: 07/30/2009] [Indexed: 12/29/2022]
Abstract
A novel intrauterine transplantation (IUT) approach was developed to improve the efficiency of engraftment of hematopoietic stem cells (HSCs). HSCs with a green fluorescent protein (GFP) reporter gene were transplanted in utero on days 12.5, 13.5 and 14.5 post coitum (p.c.). The degree of chimerism of donor cells in recipient newborn mice was examined using fluorescent microscopy, polymerase chain reaction (PCR), fluorescence-activated cell sorting (FACS), and fluorescence in situ hybridization (FISH) analyses. Microscopic examination revealed the presence of green fluorescent signal in the peripheral blood of the chimeric mice. The highest survival rate (47%) as well as the highest chimerism rate (73%) were achieved by our new approach in the newborn mice that were subjected to in utero transplantation (IUT) on day 12.5 p.c. (E12.5) compared to the conventional IUT method. FACS analysis indicated that 1.55+/-1.10% of peripheral blood cells from the newborn mice were GFP-positive donor cells. FISH showed that cells containing the donor-specific GFP sequence were present in the bone marrow (BM) of the chimeric mice. Thus, the efficiency of chimera production with this new method of IUT was significantly improved over the existing IUT techniques and instruments.
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Ross J, Bottardi S, Bourgoin V, Wollenschlaeger A, Drobetsky E, Trudel M, Milot E. Differential requirement of a distal regulatory region for pre-initiation complex formation at globin gene promoters. Nucleic Acids Res 2009; 37:5295-308. [PMID: 19567738 PMCID: PMC2760785 DOI: 10.1093/nar/gkp545] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Although distal regulatory regions are frequent throughout the genome, the molecular mechanisms by which they act in a promoter-specific manner remain to be elucidated. The human β-globin locus constitutes an extremely well-established multigenic model to investigate this issue. In erythroid cells, the β-globin locus control region (LCR) exerts distal regulatory function by influencing local chromatin organization and inducing high-level expression of individual β-like globin genes. Moreover, in transgenic mice expressing the entire human β-globin locus, deletion of LCR-hypersensitive site 2 (HS2) can alter β-like globin gene expression. Here, we show that abnormal expression of human β-like globin genes in the absence of HS2 is associated with decreased efficacy of pre-initiation complex formation at the human ɛ- and γ-promoters, but not at the β-promoter. This promoter-specific phenomenon is associated with reduced long-range interactions between the HS2-deleted LCR and human γ-promoters. We also find that HS2 is dispensable for high-level human β-gene transcription, whereas deletion of this hypersensitive site can alter locus chromatin organization; therefore the functions exerted by HS2 in transcriptional enhancement and locus chromatin organization are distinct. Overall, our data delineate one mechanism whereby a distal regulatory region provides promoter-specific transcriptional enhancement.
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Affiliation(s)
- Julie Ross
- Faculty of Medicine, University of Montreal, Maisonneuve-Rosemont Hospital Research Center, Montreal, Quebec, Canada
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Association of differential and site-dependent CpG methylation and diverse expression of DNA methyltransferases with the tissue-specific expression of human β-globin gene in transgenic mice. Int J Hematol 2009; 89:414-421. [DOI: 10.1007/s12185-009-0319-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 02/06/2009] [Accepted: 04/07/2009] [Indexed: 01/15/2023]
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8
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Wang PY, Xie S, Cui AD, Jiao F, Li ZL, Bai XY, Liu F. Inhibiting gene expression in vivo by virus-mediated small interfering RNA. Mol Biol 2008. [DOI: 10.1134/s0026893308060083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Expression of green fluorescent protein under the regulation of human locus control region elements HS2 and HS3 in transgenic mice. Int J Hematol 2008; 88:36-42. [DOI: 10.1007/s12185-008-0089-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2007] [Revised: 03/14/2008] [Accepted: 03/19/2008] [Indexed: 10/22/2022]
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10
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Xie SY, Zhang JZ, Huang SZ, Sun D, Ren ZR, Zeng YT. Suppression of eGFP expression in erythroid-specific transgenic mice by siRNA. Blood Cells Mol Dis 2005; 34:220-5. [PMID: 15885605 DOI: 10.1016/j.bcmd.2004.12.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2004] [Revised: 12/07/2004] [Accepted: 12/08/2004] [Indexed: 10/25/2022]
Abstract
We have studied the role of small interfering RNA (siRNA) in the suppression of the enhanced green fluorescent protein (eGFP) in vitro and in vivo. siRNA plasmids for suppressing the eGFP expression were constructed, in which H1 promoter amplified from human 293 T cells was used to drive the small interfering RNA (19-nt) synthesis. In vitro studies demonstrated that the constructed siRNA plasmids had an effective suppressive effect on eGFP expression in 293 T and Mel cells. When the siRNA plasmid was injected into erythroid-specific eGFP transgenic mice, the eGFP expression were significantly suppressed (over 20% reduction) in the recipient mice compared to the control mice and the suppressing effect lasted for 2 weeks after one single injection. Moreover, the suppressive effect could be re-generated or boosted with secondary injections. Our results demonstrate a tissue-specific gene suppression by siRNA treatment.
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Affiliation(s)
- Shu-Yang Xie
- Institute of Medical Genetics, Shanghai Children's Hospital, Medical School, Shanghai Jiao Tong University, 24/1400 West Beijing Road, Shanghai 200040, China
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Mullins LJ, Mullins JJ. Large transgenes reveal their secrets. Focus on "differential expression of the closely linked KISS1, REN, and FLJ10761 genes in transgenic mice". Physiol Genomics 2004; 17:1-3. [PMID: 15020719 DOI: 10.1152/physiolgenomics.00019.2004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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