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Chen X, Liao L, Wu Y, Xiang L, Qin Y, Luo M, Lin F. Genetic mutation analysis of hereditary spherocytosis in Guangxi Zhuang Autonomous Region. J Hematop 2023; 16:95-101. [PMID: 38175446 DOI: 10.1007/s12308-023-00545-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 04/10/2023] [Indexed: 01/05/2024] Open
Abstract
Hereditary spherocytosis (HS) is a common, hereditary hemolytic anemia (HHA) that is attributed to the disturbance of five erythrocyte membrane proteins. HS is also common in Guangxi, China. Target region capture high-throughput sequencing technology was used to analyze genetic mutations found in HS patients. Pedigree analysis was also performed, in some cases, to provide an optimized approach for the etiological diagnosis of complex, hereditary hemolytic anemia. Blood samples from the probands and their families were assessed by laboratory tests, target region capture high-throughput sequencing technology, and Sanger sequencing. We detected 79 HS patients from 37 unrelated families. The mutations observed in these patients were found mainly in four HS-related genes. These included SLC4A1, which was mutated in 31.65% of patients (25/79), SPTA1 (30.78% (24/79)), EPB42 (6.33% (5/79)), and SPTB (5.06% (4/79)). Composite genotype was observed in 26.58% (21/79) of patients and included mutations in two or more HS-related genes or mutations in HS-related genes combined with thalassemia or G6PD deficiency. No significant differences in clinical symptoms were found among patients of various genotypes except total bilirubin. Mean reticulocyte volume (MRV) and mean sphered cell volume (MSCV) of the composite genotype were significantly different from other groups. A total of 28 mutation types were found in HS-related genes. Using high-throughput sequencing technology, we also found some cases that had been misdiagnosed. MRV and MSCV are more significant in compound mutations as sensitive determinants of HS. High-throughput sequencing technology can be used to provide a more effective etiological diagnostic method for HS, with high efficiency and specificity.
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Affiliation(s)
- Xingyuan Chen
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
- Department of Laboratory Medicine, Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-Sen University, Nanning, Guangxi, China
| | - Lin Liao
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yangyang Wu
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Liqun Xiang
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yumei Qin
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Meiling Luo
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Faquan Lin
- Key Laboratory of Clinical Laboratory Medicine of GuangxiDepartment of EducationDepartment of Clinical Laboratory, the First Affiliated Hospital of Guangxi Medical University, Nanning, China.
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Spherocytosis-Related L1340P Mutation in Ankyrin Affects Its Interactions with Spectrin. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010151. [PMID: 36676098 PMCID: PMC9864249 DOI: 10.3390/life13010151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023]
Abstract
Previously, we reported a new missense mutation in the ANK1 gene that correlated with the hereditary spherocytosis phenotype. This mutation, resulting in L1340P substitution (HGMD CM149731), likely leads to the changes in the conformation of the ankyrin ZZUD domain important for ankyrin binding to spectrin. Here, we report the molecular and physiological effects of this mutation. First, we assessed the binding activity of human β-spectrin to the mutated ZZUDL1340P domain of ankyrin using two different experimental approaches-the study of association and dissociation responses of the spectrin-ankyrin binding domain and a sedimentation assay. In addition, we documented the changes in morphology caused by the overexpressed ankyrin ZZUD domain in human cell models. Our results prove the key role of the L1340 aa residue for the correct alignment of the ZZUD domain of ankyrin, which results in binding the latter with spectrin within the erythrocyte membrane. Replacing L1340 with a proline residue disrupts the spectrin-binding activity of ankyrin.
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A novel splicing mutation of ANK1 is associated with phenotypic heterogeneity of hereditary spherocytosis in a Chinese family. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166595. [PMID: 36336297 DOI: 10.1016/j.bbadis.2022.166595] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 10/28/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022]
Abstract
Hereditary spherocytosis (HS) is a common hematological genetic disorder that results in anemia, jaundice and splenomegaly. It is caused by mutations in the ANK1, SPTA, SPTB, SLC4A1 and EPB42 genes, which encode red blood cell membrane and skeletal proteins. Patients show high heterogeneity in phenotype and genotype and the genotype-phenotype correlation still requires clarification. Here, a novel splicing mutation (ANK1: c.4391-2 A>C) was identified by whole-exome sequencing (WES) and Sanger sequencing in a Chinese boy who exhibited a moderately severe HS phenotype. However, his father exhibited a mild phenotype, despite carrying the same HS-causing mutation. The function of the mutant ANK1 protein was analyzed by both bioinformatics and experimental analysis. The mutant protein (p.N1463Kfs*4) showed a different 3D-structure and altered subcellular localization, when compared with the wild-type ANK1 protein. These changes disrupted the normal cell membrane structure and resulted in spheroidized red blood cells. Amplification of cDNA from the son and his father revealed a difference in expression of the abnormal transcript produced by the splicing mutation. We proposed that the lower expression of the mutant allele may have contributed to the relatively mild symptoms of the father. Our study verified ANK1 c. c.4391-2 A>C as a novel pathogenic mutation that causes HS. We have also provided new insights into the interpretation of phenotypic variability within families, which could greatly improve the clinical diagnosis and genetic counseling of HS.
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Ge L, Huang P, Miao H, Yu H, Wu D, Chen F, Lin Y, Lin Y, Li W, Hua J. The new landscape of differentially expression proteins in placenta tissues of gestational diabetes based on iTRAQ proteomics. Placenta 2023; 131:36-48. [PMID: 36473392 DOI: 10.1016/j.placenta.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 10/26/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Gestational diabetes mellitus (GDM) refers to abnormal glucose tolerance that occurs or is firstly diagnosed during pregnancy. GDM is related to various adverse pregnancy outcomes, but GDM pathogeny has not been fully elucidated. Nevertheless, previous studies have observed that many proteins in the placentas of patients with GDM are dysregulated. The present study aimed to establish a novel differentially expressed protein (DEP) landscape of GDM and normal maternal placentas and to explore the possible connection between DEPs and GDM pathogenesis. This study provides new insights into the mechanism of GDM and should make an important contribution to the development of biomarkers. METHODS The morphological characteristics of the placenta were observed on 30 GDM and normal maternal placental tissues stained with haematoxylin and eosin. Isobaric tags for relative and absolute quantitation (iTRAQ) was used in the proteomics screening of the DEPs of the normal and GDM maternal placentas. Bioinformatics analysis was performed on the DEPs, and parallel reaction monitoring (PRM) was performed to verify the DEPs. Finally, the quantitative analysis of iTRAQ and PRM was verified by immunohistochemical assay. RESULTS A total of 68 DEPs in the GDM placenta were identified with iTRAQ proteomics experiment, comprising 21 up-regulated and 47 down-regulated DEPs. Bioinformatics analysis showed that the regulation of transport, catabolic process of non-coding RNA, cytoskeleton and cell binding were the most abundant Gene Ontology terms, and RNA degradation was an important pathway for significant enrichment. Protein-protein interaction network analysis showed that heterogeneous nuclear ribonucleoproteins A2/B1 (HNRNPA2B1), heterogeneous nuclear ribonucleoprotein A/B (HNRNPAB), heterogeneous nuclear ribonucleoprotein L (HNRNPL) and heterogeneous nuclear ribonucleoprotein A3 (HNRNPA3) were the cores of the up-regulated proteins. Band 3 anion transport protein (SLC4A1), spectrin beta chain erythrocytic (SPTB), ankyrin-1 (ANK1), spectrin beta chain non-erythrocytic 2 (SPTBN2), D-3-phosphoglycerate dehydrogenase (PHGDH) and exosome complex component RRP42 (EXOSC7) were the cores of the down-regulated proteins. These proteins are involved in the binding, splicing, processing, transport and degradation of RNA and in the formation and maintenance of the cytoskeleton. PRM verification results showed that seven proteins, namely, epiplakin (EPPK1), cold-inducible RNA-binding protein (CIRBP), HNRNPA2B1, HNRNPAB, HNRNPL, Ras-related protein Rab-21 (RAB21) and Ras-related protein Rab-3B (RAB3B), were up-regulated, whereas SPTB and SLC4A1 were down-regulated. The results of immunohistochemical assay also showed that the expression of five proteins, namely EPPK1, HNRNPA2B1, HNRNPAB, CIRBP and RAB21, were significantly higher in GDM placental tissues (P < 0.01). The GDM placentas showed changes in the morphological evaluation, including poor villous maturation, obvious increase in the number of syncytiotrophoblast nodules, thickening of the wall of dry villous arterioles with lumen stenosis, increased fibrinous exudation and excessive filling of villous interstitial vessels. DISCUSSION Differentially expressed proteins related to a variety of biological processes in the GDM placenta were found. Fourteen proteins, namely, HNRNPA2B1, HNRNPAB, HNRNPL, HNRNPA3, EPPK1, CIRBP, RAB21, RAB3B, SLC4A1, SPTB, ANK1, SPTBN2, PHGDH and EXOSC7, which were differentially expressed in the placenta, may play an important role in regulating the occurrence and development of gestational diabetes through multi-channel and multi-link regulation.
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Affiliation(s)
- Li Ge
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China.
| | - Pingping Huang
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Haiyan Miao
- Department of Obstetrics and Gynecology, The Second People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Honghong Yu
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Dongmei Wu
- Department of Obstetrics and Gynecology, The Second People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Fan Chen
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yan Lin
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yuzheng Lin
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Wenfang Li
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jinghe Hua
- School of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, China
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Fu P, Jiao YY, Chen K, Shao JB, Liao XL, Yang JW, Jiang SY. Targeted next-generation sequencing identifies a novel nonsense mutation in ANK1 for hereditary spherocytosis: A case report. World J Clin Cases 2022; 10:4923-4928. [PMID: 35801015 PMCID: PMC9198851 DOI: 10.12998/wjcc.v10.i15.4923] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/23/2022] [Accepted: 04/04/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hereditary spherocytosis (HS) is characterized by anemia, jaundice, splenomegaly, and cholelithiasis, and is caused by abnormal genes encoding red blood cell membrane components. The most common mutations found in HS are in the ANK1 gene.
CASE SUMMARY A 4-mo-old girl was admitted to our hospital with pallor that had lasted for more than 2 mo. She presented with jaundice, anemia and splenomegaly. A heterozygous mutation of ANK1 (exon23: c.G2467T:p.E823X) was identified, and the mutation was determined to be autosomal dominant. This mutation is linked to the relatively serious anemia she had after birth; this anemia improved with age.
CONCLUSION The utilization of next-generation sequencing may assist with the accurate diagnosis of HS, especially in atypical cases.
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Affiliation(s)
- Pan Fu
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Yang-Yang Jiao
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Kai Chen
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Jing-Bo Shao
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200040, China
| | - Xue-Lian Liao
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Jing-Wei Yang
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Sha-Yi Jiang
- Department of Hematology and Oncology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
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Melachuri S, Lim CC, Winters J. Optic neuropathy in iron overload and iron chelation therapy. Am J Hematol 2022; 97:670-672. [PMID: 35179250 DOI: 10.1002/ajh.26511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Samyuktha Melachuri
- University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
- University of Pittsburgh Medical Center Eye and Ear Institute, University of Pittsburgh Pittsburgh Pennsylvania USA
| | - Chelsey Chaehee Lim
- University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
- Department of Pediatrics University of Pittsburgh Pittsburgh Pennsylvania USA
| | - Jacob Winters
- University of Pittsburgh Medical Center Eye and Ear Institute, University of Pittsburgh Pittsburgh Pennsylvania USA
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Wang JF, Ma L, Gong XH, Cai C, Sun JJ. Severe hyperbilirubinemia in a neonate with hereditary spherocytosis due to a de novo ankyrin mutation: A case report. World J Clin Cases 2021; 9:5245-5251. [PMID: 34307574 PMCID: PMC8283574 DOI: 10.12998/wjcc.v9.i19.5245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/10/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Hereditary spherocytosis (HS) is a common type of hemolytic anemia caused by a red cell membrane disorder. HS type 1 (HS1) is mostly caused by mutations in ankyrin (ANK1). Newborns with HS1 usually only exhibit anemia and mild jaundice. We herein report a case of HS1 and discuss its clinical characteristics.
CASE SUMMARY A 2-d-old male full-term newborn was admitted to our hospital with severe, intractable neonatal jaundice. Laboratory investigations showed hemolytic anemia and hyperbilirubinemia and excluded immune-mediated hemolysis. The patient underwent two exchange transfusions and one plasmapheresis resulting in significantly reduced serum bilirubin. Hematologic analyses and genomic DNA sequencing studies were performed. The trio clinical exome sequencing revealed a de novo null heterozygous mutation in the patient's ANK1 gene: c.841C > T(p.Arg281Ter). This mutation results in the premature termination of the ANK1 protein.
CONCLUSION Our case demonstrates that genetic analysis can be an essential method for diagnosing HS when a newborn has severe hyperbilirubinemia.
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Affiliation(s)
- Jun-Fang Wang
- Department of Neonatology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Li Ma
- Department of Neonatology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
- NHC Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology, Shanghai Key Laboratory of Embryo and Reproduction Engineering, Shanghai 200062, China
| | - Xiao-Hui Gong
- Department of Neonatology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
- NHC Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology, Shanghai Key Laboratory of Embryo and Reproduction Engineering, Shanghai 200062, China
| | - Cheng Cai
- Department of Neonatology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
- NHC Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology, Shanghai Key Laboratory of Embryo and Reproduction Engineering, Shanghai 200062, China
| | - Jing-Jing Sun
- Department of Neonatology, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
- NHC Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology, Shanghai Key Laboratory of Embryo and Reproduction Engineering, Shanghai 200062, China
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Hao L, Li S, Ma D, Chen S, Zhang B, Xiao D, Zhang J, Jiang N, Jiang S, Ma J. Two novel ANK1 loss-of-function mutations in Chinese families with hereditary spherocytosis. J Cell Mol Med 2019; 23:4454-4463. [PMID: 31016877 PMCID: PMC6533472 DOI: 10.1111/jcmm.14343] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/16/2019] [Accepted: 04/05/2019] [Indexed: 12/14/2022] Open
Abstract
Hereditary spherocytosis (HS) is the most common inherited haemolytic anaemia disorder. ANK1 mutations account for most HS cases, but pathogenicity analysis and functional research have not been widely performed for these mutations. In this study, in order to confirm diagnosis, gene mutation was screened in two unrelated Chinese families with HS by a next‐generation sequencing (NGS) panel and then confirmed by Sanger sequencing. Two novel heterozygous mutations (c.C841T, p.R281X and c.T290G, p.L97R) of the ANK1 gene were identified in the two families respectively. Then, the pathogenicity of the two new mutations and two previously reported ANK1 mutations (c.C648G, p.Y216X and c.G424T, p.E142X) were studied by in vitro experiments. The four mutations increased the osmotic fragility of cells, reduced the stabilities of ANK1 proteins and prevented the protein from localizing to the plasma membrane and interacting with SPTB and SLC4A1. We classified these four mutations into disease‐causing mutations for HS. Thus, conducting the same mutation test and providing genetic counselling for the two families were meaningful and significant. Moreover, the identification of two novel mutations enriches the ANK1 mutation database, especially in China.
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Affiliation(s)
- Lili Hao
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Shanshan Li
- Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Duan Ma
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China.,Research Center for Birth Defects, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Shanghai Key Lab of Birth Defect, Children's Hospital of Fudan University, Shanghai, China
| | - Shiyu Chen
- Research Center for Birth Defects, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Bowen Zhang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Deyong Xiao
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Jin Zhang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Nan Jiang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Metabolism and Molecular Medicine, Ministry of Education, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Shayi Jiang
- Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Ma
- Pediatrics Research Institute, Children's Hospital of Fudan University, Shanghai, China
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