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Human m 6A-mRNA and lncRNA epitranscriptomic microarray reveal function of RNA methylation in hemoglobin H-constant spring disease. Sci Rep 2021; 11:20478. [PMID: 34650160 PMCID: PMC8516988 DOI: 10.1038/s41598-021-99867-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 09/27/2021] [Indexed: 02/03/2023] Open
Abstract
The thalassemia of Hemoglobin H-Constant Spring disease (HbH-CS) is the most common type of Thalassemia in non-transfusion thalassemia. Interestingly, the clinical manifestations of the same genotype of thalassemia can be vastly different, likely due to epigenetic regulation. Here, we used microarray technology to reveal the epigenetic regulation of m6A in modifiable diseases and demonstrated a role of BCL2A1 in disease regulation. In this study, we revealed that methylating enzyme writers including METTL16, WTAP, CBLL1, RBM15B, and ZC3H13 displayed low expression and the demethylating enzyme ALKBH5, along with reader proteins including IGF2BP2 and YTHDF3 exhibited high expression. In addition, BCL2A1 was hypo-methylated and showed low expression. We also revealed that the BCL2A1 methylation level and IGF2BP2 expression were negatively correlated. Additionally, the mRNAs expression between ALKBH5 and IGF2BP2 were positively correlated. In HbH-CS, most genes were hypo-methylated. This included BCL2A1, which may play an important role in the process of red blood cell differentiation and development of HbH-CS. Moreover, the mRNA-M6A methylation status may be regulated by the demethylating enzyme ALKBH5 via IGF2BP2.
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2
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Vasseur C, Domingues-Hamdi E, Pakdaman S, Galactéros F, Baudin-Creuza V. Alpha haemoglobin-stabilising protein concentration in the red blood cells of patients with sickle cell anaemia with and without hydroxycarbamide treatment. Br J Haematol 2021; 196:183-192. [PMID: 34378186 DOI: 10.1111/bjh.17728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/02/2021] [Accepted: 07/12/2021] [Indexed: 11/27/2022]
Abstract
Alpha haemoglobin-stabilising protein (AHSP) is a key chaperone synthesised in red blood cell (RBC) precursors. Many studies have reported AHSP as a potential biomarker of various diseases. AHSP gene expression has been studied in detail, but little is known about AHSP protein levels in RBCs. We investigated the AHSP concentration of RBC lysates from control subjects (n = 10) and patients with sickle cell anaemia (SCA) with (n = 10) and without (n = 12) hydroxycarbamide (HC) treatment, to evaluate the clinical relevance of AHSP in SCA. We developed a sandwich enzyme-linked immunosorbent assay method, with which we were able, for the first time, to determine the mean AHSP concentration in control RBC lysates (0·82 µg/ml). The AHSP concentration (2·23 µg/ml) was significantly higher in untreated patients with the SS genotype than in controls. The AHSP concentration decreased significantly on HC treatment (1·50 µg/ml) but remained significantly higher than that in controls. A strong positive correlation was observed between the AHSP concentration and the α-haemoglobin pool with the three groups of subjects pooled into a single group. Our present findings indicate that AHSP concentration can be considered a candidate biomarker for monitoring HC responses in patients with SCA and suggest a role for AHSP in various RBC diseases.
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Affiliation(s)
- Corinne Vasseur
- Inserm U955-IMRB Team Pirenne, Univ Paris Est Créteil, Créteil, France.,Laboratory of Excellence GR-Ex, Paris, France
| | - Elisa Domingues-Hamdi
- Inserm U955-IMRB Team Pirenne, Univ Paris Est Créteil, Créteil, France.,Laboratory of Excellence GR-Ex, Paris, France
| | - Sadaf Pakdaman
- Inserm U955-IMRB Team Pirenne, Univ Paris Est Créteil, Créteil, France.,Laboratory of Excellence GR-Ex, Paris, France.,Etablissement Français du Sang (EFS) Ile de France-Mondor, Créteil, France
| | - Frédéric Galactéros
- Inserm U955-IMRB Team Pirenne, Univ Paris Est Créteil, Créteil, France.,Laboratory of Excellence GR-Ex, Paris, France.,Unité des Maladies Génétiques du Globule Rouge, Hôpital Universitaire Henri Mondor (AP-HP), Créteil, France
| | - Véronique Baudin-Creuza
- Inserm U955-IMRB Team Pirenne, Univ Paris Est Créteil, Créteil, France.,Laboratory of Excellence GR-Ex, Paris, France
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Ruengdit C, Khamphikham P, Jinorose N, Pornprasert S. Hb Bart's Hydrops Fetalis Syndrome and Hb H Disease Caused by Deletional Chiang Rai (- - CR) α 0-Thalassemia in Two Unrelated Thai Families. Hemoglobin 2021; 45:75-79. [PMID: 33821735 DOI: 10.1080/03630269.2021.1906269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
α0-Thalassemia (α0-thal) Chiang Rai (- -CR; NC_000016.10: g.144215_188843del) was identified as a novel 44.6 kb deletional type of α-thalassemia (α-thal), removing all α-like globin genes. However, little is known about the deleterious effects of this genetic disorder, particularly when it is combined with other types of thalassemia. We performed molecular analysis of the - -CR deletion using gap-polymerase chain reaction (gap-PCR) in two independent families residing in Phayao and Chiang Mai, Thailand, with an unknown causative mutation for Hb Bart's hydrops fetalis syndrome and Hb H disease. Five out of seven individuals were diagnosed to be heterozygous for the - -CR deletion. Of these, two also carried Hb H disease with compound heterozygosities for - -CR and -α3.7 (rightward) deletions. However, hematological parameters of the - -CR carriers displayed microcytic hypochromic anemia that is comparable to other α0-thal traits. Although the prevalence of - -CR has never been elucidated in a specific population, our study demonstrated that genotyping for - -CR might be considered as an additional investigation for unexplained Hb Bart's hydrops fetal syndrome and Hb H disease.
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Affiliation(s)
- Chedtapak Ruengdit
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Pinyaphat Khamphikham
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | | | - Sakorn Pornprasert
- Division of Clinical Microscopy, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
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Che Yaacob NS, Islam MA, Alsaleh H, Ibrahim IK, Hassan R. Alpha-hemoglobin-stabilizing protein (AHSP): a modulatory factor in β-thalassemia. Int J Hematol 2020; 111:352-359. [PMID: 31894534 DOI: 10.1007/s12185-019-02806-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 11/30/2022]
Abstract
Hemoglobin (Hb) is an iron-containing metalloprotein that transports oxygen molecules from the lungs to the rest of the human body. Among the different variants of Hb, HbA1 is the most common and is composed of two alpha (αHb) and two beta globin chains (βHb) constructing a heterotetrameric protein complex (α2β2). Due to the higher number of AHSP genes, there is a tendency to produce approximately twice as much of α subunit as β subunit. Therefore, there is a chance of presenting excess α subunit leftover in human blood plasma; excess subunits subsequently bind with each other and aggregates β-thalassemia occurs due to lack of or reduced numbers of βHb subunit. Alpha-hemoglobin-stabilizing protein (AHSP) is a scavenger protein which acts as a molecular chaperon by reversibly binding with free αHb forming a complex (AHSP-αHb) that prevents aggregation and precipitation preventing deleterious effects towards developing serious human diseases including β-thalassemia. Clinical severity worsens if mutations in AHSP gene co-occur in patients with β-thalassemia. Considering the mechanism of action of AHSP and its contribution to ameliorating β-thalassemia severity, it could potentially be used as a modulatory agent in the treatment of β-thalassemia.
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Affiliation(s)
- Nur Suraya Che Yaacob
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Md Asiful Islam
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Heba Alsaleh
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Ibrahim Khidir Ibrahim
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia.,Department of Haematology, Faculty of Medical Laboratory Sciences, Al-Neelain University, Khartoum, Sudan
| | - Rosline Hassan
- Department of Haematology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia.
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Yao X, Xu LH, Xu HG, Li XY, Liu Y, Fang JP. Iron Metabolism and Oxidative Status in Patients with Hb H Disease. Hemoglobin 2019; 43:38-41. [PMID: 30915867 DOI: 10.1080/03630269.2019.1575850] [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] [Indexed: 12/20/2022]
Abstract
To evaluate the iron metabolism and oxidative status in patients with Hb H disease, we investigated 43 patients with Hb H disease, including eight deletional Hb H disease patients and 35 nondeletional Hb H disease patients and 20 healthy controls. The levels of hematological parameters, serum ferritin, hepcidin, superoxide dismutase (SOD), malondialdehyde (MDA) and total antioxidant capacity (TAC), were examined. We found higher serum ferritin levels and lower hepcidin, MDA and TAC levels in Hb H disease patients than in controls. The hepcidin level in Hb H disease patients was positively correlated with MDA and TAC levels but not with serum ferritin and SOD levels. The patients with nondeletional Hb H disease showed higher serum ferritin and Hb H concentrations than those patients with deletional Hb H disease. However, no statistically significant differences in SOD, MDA and TAC levels were found in patients with deletional and nondeletional Hb H disease. Oxidative stress and antioxidant defense were related to hepcidin levels. Our study indicated that hepcidin might be an important parameter for monitoring the iron metabolism and oxidative status of Hb H disease patients.
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Affiliation(s)
- Xi Yao
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
| | - Lu-Hong Xu
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
| | - Hong-Gui Xu
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
| | - Xin-Yu Li
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
| | - Yong Liu
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
| | - Jian-Pei Fang
- a Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Pediatrics , Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University , Guangzhou, Guangdong Province , People's Republic of China
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Galehdari H, Azarshin SZ, Bijanzadeh M, Shafiei M. Polymorphism studies on microRNA targetome of thalassemia. Bioinformation 2018; 14:252-258. [PMID: 30108424 PMCID: PMC6077818 DOI: 10.6026/97320630014252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 05/06/2018] [Accepted: 05/06/2018] [Indexed: 11/23/2022] Open
Abstract
Thalassemia is one of the most prevalent hemoglobin disorders. It is caused by the decreased or absent synthesis of one globin chain that leads to moderate to severe hemolytic anemia in clinical complications. Some genetic factors cause these phenotypic variations by the alteration of gene expression. MicroRNAs (miRNAs) are post-transcriptional regulators in gene expression. Therefore, variations in 3'-untranslated region (3'-UTR) of target genes may affect gene expression. It is of interest to evaluate the impact of noncoding SNPs in thalassemia related genes on miRNA: mRNA interactions in the severity of thalassemia. Polymorphisms that alter miRNA: mRNA interactions were predicted using PolymiRTS and Mirsnpscore tools. Then, the effect of predicted target SNPs on thermodynamic stability, local RNA structure and regulatory elements was investigated using RNAhybrid, RNAsnp and RegulomeDB, respectively. The molecular functions and the Biological process of candidate genes were extracted and interaction network was created. Forty-six SNPs were predicted to affect 188 miRNA interactions. These results suggest that 3'-UTR SNP may affect gene expression and cause phenotypic variation in thalassemia patients.
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Affiliation(s)
- Hamid Galehdari
- Thalassemia & Hemoglobinopathy Research center, research institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyedeh Zohreh Azarshin
- Thalassemia & Hemoglobinopathy Research center, research institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mehdi Bijanzadeh
- Thalassemia & Hemoglobinopathy Research center, research institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Shafiei
- Thalassemia & Hemoglobinopathy Research center, research institute of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Genetics, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Dimishkovska M, Kuzmanovska M, Kocheva S, Martinova K, Karanfilski O, Stojanoski Z, Plaseska-Karanfilska D. First Cases of Hb Agrinio Described in Patients from the Republic of Macedonia. Hemoglobin 2017; 41:308-310. [PMID: 29219637 DOI: 10.1080/03630269.2017.1397016] [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: 10/18/2022]
Abstract
Previous molecular analyses of α-thalassemia (α-thal) in the Republic of Macedonia have identified the following genetic defects: -α3.7 (rightward), -(α)20.5 and - -MED I deletions and Hb Icaria [α142, Term→Lys (α2), HBA2: c.427T>A] and polyadenylation signal (polyA) [AATAAA>AATGAA (α2), HBA2: c.*92A>G] point mutations. Here, we report two unrelated patients from the Romani population in the Republic of Macedonia, homozygotes for the α2-globin gene variant Hb Agrinio [α29(B10)Leu→Pro; HBA2: c.89T>C]. To date, Hb Agrinio has been described only in individuals of Greek, Cypriot and Spanish origin. Both of our patients had early presentation of the disease (3.5 years and 2 months, respectively) with frequent blood transfusions from early infancy. They have a severe intermediate phenotype of thalassemia (Hb H disease) with hemoglobin (Hb) levels of 7.8 and 7.7 g/dL, respectively. Although the HBA2: c.89T>C mutation results in an α+ allele, the severe phenotype of the homozygotes is due to the production of hyperunstable α chains that undergo post translational precipitation. This leads to a greater degree of red cell damage and hemolytic anemia. The detection of Hb Agrinio in two unrelated families of Romani ethnic origin, may suggest it is a founder mutation in this population living in the Republic of Macedonia. Considering the severity of the clinical presentation of the homozygotes or compound heterozygotes for this rare Hb variant, a targeted molecular screening for Hb Agrinio mutation carriers should be considered in all patients of Romani ethnic origin with manifested microcytosis.
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Affiliation(s)
- Marija Dimishkovska
- a Research Centre for Genetic Engineering and Biotechnology 'Georgi D. Efremov , ' Macedonian Academy of Science and Arts , Skopje , Republic of Macedonia
| | - Maja Kuzmanovska
- a Research Centre for Genetic Engineering and Biotechnology 'Georgi D. Efremov , ' Macedonian Academy of Science and Arts , Skopje , Republic of Macedonia
| | - Svetlana Kocheva
- b University Pediatric Clinic, Medical Faculty , Skopje , Republic of Macedonia
| | - Kata Martinova
- b University Pediatric Clinic, Medical Faculty , Skopje , Republic of Macedonia
| | - Oliver Karanfilski
- c University Clinic for Hematology, Medical Faculty , Skopje , Republic of Macedonia
| | - Zlate Stojanoski
- c University Clinic for Hematology, Medical Faculty , Skopje , Republic of Macedonia
| | - Dijana Plaseska-Karanfilska
- a Research Centre for Genetic Engineering and Biotechnology 'Georgi D. Efremov , ' Macedonian Academy of Science and Arts , Skopje , Republic of Macedonia
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