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Soontornpanawet C, Singha K, Srivorakun H, Tepakhan W, Fucharoen G, Fucharoen S. Molecular basis of a high Hb A 2/Hb F β-thalassemia trait: a retrospective analysis, genotype-phenotype interaction, diagnostic implication, and identification of a novel interaction with α-globin gene triplication. PeerJ 2023; 11:e15308. [PMID: 37159832 PMCID: PMC10163868 DOI: 10.7717/peerj.15308] [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: 01/07/2023] [Accepted: 04/06/2023] [Indexed: 05/11/2023] Open
Abstract
Background β 0-thalassemia deletion removing 5´β-globin promoter usually presents phenotype with high hemoglobin (Hb) A2 and Hb F levels. We report the molecular characteristics and phenotype-genotype correlation in a large cohort of the β 0-thalassemia with 3.4 kb deletion. Methods A total of 148 subjects, including 127 heterozygotes, 20 Hb E-β-thalassemia patients, and a double heterozygote with α-globin gene triplication, were recruited. Hb and DNA analysis were performed to identify thalassemia mutations and four high Hb F single nucleotide polymorphisms (SNPs) including four base pair deletion (-AGCA) at A γ-globin promoter, rs5006884 on OR51B6 gene, -158 G γ-XmnI, BCL11A binding motifs (TGGTCA) between 3´A γ-globin gene and 5´δ-globin gene. Results It was found that heterozygous β 0-thalassemia and Hb E-β 0-thalassemia with 3.4 kb deletion had significantly higher Hb, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and Hb F values as compared with those with other mutations. Co-inheritance of heterozygous β 0-thalassemia with 3.4 kb deletion and α-thalassemia was associated with even higher MCV and MCH values. The Hb E-β 0-thalassemia patients carried a non-transfusion-dependent thalassemia phenotype with an average Hb of around 10 g/dL without blood transfusion. A hitherto undescribed double heterozygous β 0-thalassemia with 3.4 kb deletion and α-globin gene triplication presented as a plain β-thalassemia trait. Most of the subjects had wild-type sequences for the four high Hb F SNPs examined. No significant difference in Hb F was observed between those of subjects with and without these SNPs. Removal of the 5´β-globin promoter may likely be responsible for this unusual phenotype. Conclusions The results indicate that β 0-thalassemia with 3.4 kb deletion is a mild β-thalassemia allele. This information should be provided at genetic counseling and prenatal thalassemia diagnosis.
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Affiliation(s)
- Chayada Soontornpanawet
- Centre for Research & Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen, Thailand
| | - Kritsada Singha
- Centre for Research & Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen, Thailand
- Faculty of Medicine, Mahasarakham University, Muang, Mahasarakham, Thailand
| | - Hataichanok Srivorakun
- Centre for Research & Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen, Thailand
| | - Wanicha Tepakhan
- Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Goonnapa Fucharoen
- Centre for Research & Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen, Thailand
| | - Supan Fucharoen
- Centre for Research & Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Muang, Khon Kaen, Thailand
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Tamaddoni A, Khabaz Astaneh S, Tabaripour R, Akhavan-Niaki H. Krüppel-Like Factor 1 Gene Mutations in Thalassemia Patients from North Iran: Report of a New Mutation Associated with β-Thalassemia Intermedia. Hemoglobin 2019; 43:12-17. [PMID: 30747024 DOI: 10.1080/03630269.2019.1567528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Thalassemia is a hereditary disease with an autosomal recessive inheritance pattern resulting in reduced production of globin chains. Mutations in modifier genes can cause or affect thalassemia. Krüppel-like factor 1 (KLF1) is a modifier gene that was investigated in this study. Thirty-five Iranian β-thalassemia (β-thal) minor patients with hematological symptoms including Hb A2 3.0%, mean corpuscular volume (MCV) <75.0 fL, mean corpuscular hemoglobin (Hb) (MCH) <25.0 pg, and two β-thal intermedia (β-TI) patients in 50 subjects who carried no mutations on the HBB and HBA2 or HBA1 genes were investigated for all exons of the KLF1 gene by polymerase chain reaction (PCR) and sequencing methods. Of the 35 patients with a β-thal minor phenotype, one patient was heterozygous for the c.544T>C mutation in exon 2 of KLF1 and HBB: c.380T>G variant, Hb Dhonburi [also known as Hb Neapolis or codon 126 (T>G)]. The c.340T>C mutation was also found in exon 2 of the KLF1 gene with an allele frequency of 16.6% in the studied β-thal carriers. The two β-TI patients were homozygous for a new mutation c.942delA in exon 3 of KLF1. Mutations in modifier genes can cause or affect thalassemia. Therefore, exact investigation of globin genes and modifiers such as KLF1 is necessary in areas where globin gene disorders are most prevalent to understand the reason of clinical and hematological symptoms of thalassemia and facilitate newborn screening or prenatal diagnosis (PND) programs.
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Affiliation(s)
- Ahmad Tamaddoni
- a Non-Communicable Pediatric Diseases Research Center, Health Research Institute, Babol University of Medical Sciences , Babol , Iran
| | - Sahar Khabaz Astaneh
- b Department of Cellular and Molecular Biology , Islamic Azad University , Babol Branch , Babol , Iran
| | - Reza Tabaripour
- b Department of Cellular and Molecular Biology , Islamic Azad University , Babol Branch , Babol , Iran
| | - Haleh Akhavan-Niaki
- c Department of Genetics, Faculty of Medicine , Babol University of Medical Sciences , Babol , Iran
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Musso M, Luca Forni G. A Rapid, Affordable and Feasible Method for Detection of the HBG1: g.-225_-222delAGCA Polymorphism. Hemoglobin 2019; 42:283-285. [PMID: 30626245 DOI: 10.1080/03630269.2018.1534741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Single point mutations or small deletions in the Aγ - and Gγ-globin gene promoter region are associated to the nondeletional hereditary persistence of fetal hemoglobin (HPFH). Currently, DNA sequencing is most common technique adopted for detection of hemoglobin (Hb) mutations. However, some can be rapidly detected because they either destroy or create a recognition site for a restriction enzyme. Here we show that the 4 bp deletion, HBG1: g.-225_-222delAGCA in the Aγ-globin gene promoter can be easily detected using the Tru1I (MseI) restriction enzyme that cuts only in the absence of this deletion. This approach utilizes ordinary instrumentations (thermocycler and agarose gel electrophoresis) available in any basic molecular genetics laboratory, providing a reliable and inexpensive method of genetic screening.
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Affiliation(s)
- Marco Musso
- a Struttura Semplice Dipartimentale Centro della Microcitemia, Anemie Congenite e Dismetabolismo del Ferro , Genova , Italia , Ente Ospedaliero Ospedali Galliera
| | - Gian Luca Forni
- a Struttura Semplice Dipartimentale Centro della Microcitemia, Anemie Congenite e Dismetabolismo del Ferro , Genova , Italia , Ente Ospedaliero Ospedali Galliera
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Chen S, Liang H, Hu G, Yang H, Zhou K, Xu L, Liu J, Lai B, Song L, Luo H, Peng J, Liu Z, Xiao Y, Chen W, Tang H. Differently expressed long noncoding RNAs and mRNAs in TK6 cells exposed to low dose hydroquinone. Oncotarget 2017; 8:95554-95567. [PMID: 29221148 PMCID: PMC5707042 DOI: 10.18632/oncotarget.21481] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/20/2017] [Indexed: 02/06/2023] Open
Abstract
Previous studies have shown that long noncoding RNAs (lncRNAs) were related to human carcinogenesis and might be designated as diagnosis and prognosis biomarkers. Hydroquinone (HQ), as one of the metabolites of benzene, was closely relevant to occupational benzene poisoning and occupational leukemia. Using high-throughput sequencing technology, we investigated differences in lncRNA and mRNA expression profiles between experimental group (HQ 20 μmol/L) and control group (PBS). Compared to control group, a total of 65 lncRNAs and 186 mRNAs were previously identified to be aberrantly expressed more than two fold change in experimental group. To validate the sequencing results, we selected 10 lncRNAs and 10 mRNAs for quantitative real-time PCR (qRT-PCR). Through GO annotation and KEGG pathway analysis, we obtained 3 mainly signaling pathways, including P53 signaling pathway, which plays an important role in tumorigenesis and progression. After that, 25 lncRNAs and 32 mRNAs formed the lncRNA-mRNA co-expression network were implemented to play biological functions of the dysregulated lncRNAs transcripts by regulating gene expression. The lncRNAs target genes prediction provided a new idea for the study of lncRNAs. Finally, we have another important discovery, which is screened out 11 new lncRNAs without annotated. All these results uncovered that lncRNA and mRNA expression profiles in TK6 cells exposed to low dose HQ were different from control group, helping to further study the toxicity mechanisms of HQ and providing a new direction for the therapy of leukemia.
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Affiliation(s)
- Shaoyun Chen
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Hairong Liang
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Gonghua Hu
- Department of Preventive Medicine, Gannan Medical University, Ganzhou, 341000, China
| | - Hui Yang
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Kairu Zhou
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Longmei Xu
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Jiaxian Liu
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Bei Lai
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Li Song
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Hao Luo
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
| | - Jianming Peng
- Huizhou Prevention and Treatment Centre for Occupational Disease, Huizhou, 516000, China
| | - Zhidong Liu
- Huizhou Prevention and Treatment Centre for Occupational Disease, Huizhou, 516000, China
| | - Yongmei Xiao
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Wen Chen
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Huanwen Tang
- Department of Environmental and Occupational Health, Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan, 523808, China
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