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Shang S, Wang C, Chen L, Shen W, Xie Y, Li W, Li Q. Novel method for the genomic analysis of PKD1 mutation in autosomal dominant polycystic kidney disease. Front Cell Dev Biol 2023; 10:937580. [PMID: 36699011 PMCID: PMC9868468 DOI: 10.3389/fcell.2022.937580] [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: 05/06/2022] [Accepted: 12/08/2022] [Indexed: 01/11/2023] Open
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disease. Although next-generation sequencing (NGS) technology can be used to sequence tens of thousands of DNA molecules simultaneously. It has poor capture efficiency for the six PKD1 pseudogenes and GC-rich regions. Multiplex ligation-dependent probe amplification (MLPA) technology can detect consecutive deletions of exons, but it is less sensitive for single-base mutations. However, pathogenic genes might not be detected in some patients, even when using the above methods. Improving the detection rate of pathogenic genes is an important technical problem hindering clinical diagnosis of ADPKD. Four pedigrees of ADPKD patients with mutation sites not identified by NGS were examined by other methods. First, MLPA was performed. Then, pedigrees in which MLPA did not identify pathogenic genes were subjected to multiplex polymerase chain reaction (MPCR) and targeted region sequencing. Finally, the detected mutation sites were verified by Sanger sequencing. The results showed that MLPA detected the following PKD1 exonic deletion mutations in three pedigrees: PKD1-18 nt-290 nt, PKD1-up-257 nt, PKD1-up-444 nt and PKD1-3 nt-141 nt. A new mutation site was identified through targeted region sequencing in one pedigree: PKD1 NM_001009944: c.151T > C at the protein level, described as p. Cys51Arg. In summary, we established a system of genetic detection and analytical methods, from NGS to MLPA to targeted region sequencing and finally to Sanger sequencing. We combined MPCR and targeted region sequencing for the first time in ADPKD diagnosis, which further improved diagnosis accuracy. Moreover, we identified one new missense mutation and four new deletion mutations.
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Affiliation(s)
- Shunlai Shang
- Department of Nephrology, China-Japan Friendship Hospital, Beijing, China,Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,School of Medicine, Nankai University, Tianjin, China
| | - Chao Wang
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,Clinical Medical School, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lang Chen
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Wanjun Shen
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Yuansheng Xie
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Wenge Li
- Department of Nephrology, China-Japan Friendship Hospital, Beijing, China,*Correspondence: Wenge Li, ; Qinggang Li,
| | - Qinggang Li
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,*Correspondence: Wenge Li, ; Qinggang Li,
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Identification and Characterization of Novel Mutations in Chronic Kidney Disease (CKD) and Autosomal Dominant Polycystic Kidney Disease (ADPKD) in Saudi Subjects by Whole-Exome Sequencing. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58111657. [PMID: 36422197 PMCID: PMC9692281 DOI: 10.3390/medicina58111657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
Abstract
Background: Autosomal dominant polycystic kidney disease (ADPKD) is a condition usually caused by a single gene mutation and manifested by both renal and extrarenal features, eventually leading to end-stage renal disease (ESRD) by the median age of 60 years worldwide. Approximately 89% of ADPKD patients had either PKD1 or PKD2 gene mutations. The majority (85%) of the mutations are in the PKD1 gene, especially in the context of family history. Objectives: This study investigated the genetic basis and the undiscovered genes that are involved in ADPKD development among the Saudi population. Materials and Methods: In this study, 11 patients with chronic kidney disease were enrolled. The diagnosis of ADPKD was based on history and diagnostic images: CT images include enlargement of renal outlines, renal echogenicity, and presence of multiple renal cysts with dilated collecting ducts, loss of corticomedullary differentiation, and changes in GFR and serum creatinine levels. Next-generation whole-exome sequencing was conducted using the Ion Torrent PGM platform. Results: Of the 11 Saudi patients diagnosed with chronic kidney disease (CKD) and ADPKD, the most common heterozygote nonsynonymous variant in the PKD1 gene was exon15: (c.4264G > A). Two missense mutations were identified with a PKD1 (c.1758A > C and c.9774T > G), and one patient had a PKD2 mutation (c.1445T > G). Three detected variants were novel, identified at PKD1 (c.1758A > C), PKD2L2 (c.1364A > T), and TSC2 (deletion of a’a at the 3’UTR, R1680C) genes. Other variants in PKD1L1 (c.3813_381 4delinsTG) and PKD1L2 (c.404C > T) were also detected. The median age of end-stage renal disease for ADPK patients in Saudi Arabia was 30 years. Conclusion: This study reported a common variant in the PKD1 gene in Saudi patients with typical ADPKD. We also reported (to our knowledge) for the first time two novel missense variants in PKD1 and PKD2L2 genes and one indel mutation at the 3’UTR of the TSC2 gene. This study establishes that the reported mutations in the affected genes resulted in ADPKD development in the Saudi population by a median age of 30. Nevertheless, future protein−protein interaction studies to investigate the influence of these mutations on PKD1 and PKD2 functions are required. Furthermore, large-scale population-based studies to verify these findings are recommended.
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Liu X, Liu K, Nie D, Zhang J, Zhang L, Liu X, Wang J. Case report: Biochemical and clinical phenotypes caused by cysteine substitutions in the epidermal growth factor-like domains of fibrillin-1. Front Genet 2022; 13:928683. [PMID: 36035136 PMCID: PMC9402891 DOI: 10.3389/fgene.2022.928683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 07/11/2022] [Indexed: 12/01/2022] Open
Abstract
Marfan syndrome, an autosomal dominant disorder of connective tissue, is primarily caused by mutations in the fibrillin-1 (FBN1) gene, which encodes the protein fibrillin-1. The protein is composed of epidermal growth factor-like (EGF-like) domains, transforming growth factor beta-binding protein-like (TB) domains, and hybrid (Hyb) domains and is an important component of elastin-related microfibrils in elastic fiber tissue. In this study, we report a cysteine to tyrosine substitution in two different domains of fibrillin-1, both of which cause Marfan syndrome with ocular abnormalities, in two families. Using protease degradation and liquid chromatography-tandem mass spectrometry analyses, we explored the different effects of substitution of cysteine by tyrosine in an EGF-like and a calcium-binding (cb) EGF-like domain on protein stability. The results showed that cysteine mutations in the EGF domain are more likely to result in altered proteolytic sensitivity and thermostability than those in the cbEGF domain. Furthermore, cysteine mutations can lead to new enzymatic sites exposure or hidden canonical cleavage sites. These results indicate the differential clinical phenotypes and molecular pathogenesis of Marfan syndrome caused by cysteine mutations in different fibrillin-1 domains. These results strongly suggest that failure to form disulfide bonds and abnormal proteolysis of fibrillin-1 caused by cysteine mutations may be an important factor underlying the pathogenesis of diseases caused by fibrillin-1 mutations, such as Marfan syndrome.
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Affiliation(s)
- Xin Liu
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
| | - Kaiqing Liu
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Danyao Nie
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
| | - Jing Zhang
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
| | - Liyun Zhang
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
| | - Xinhua Liu
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
- *Correspondence: Xinhua Liu, ; Jiantao Wang,
| | - Jiantao Wang
- Shenzhen Eye Hospital, Shenzhen Key Laboratory of Ophthalmology, Affiliated Shenzhen Eye Hospital of Jinan University, Shenzhen, China
- *Correspondence: Xinhua Liu, ; Jiantao Wang,
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Sonbol HS, AlRashidi AA. Cloning and Expression of Receptor of Egg Jelly Protein of Polycystic Kidney Disease 1 Gene in Human Receptor of Egg Jelly Protein. PHARMACOPHORE 2022. [DOI: 10.51847/vqghabllgj] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Wang H, Dai S, Zhang J, Li Y, Gan Y, Lu T, Zhu Y, Wu J, Lin N, Tang F, Luo J. Analysis of mutations in six Chinese families with autosomal dominant polycystic kidney disease. Am J Transl Res 2020; 12:8123-8136. [PMID: 33437386 PMCID: PMC7791523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/31/2020] [Indexed: 06/12/2023]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the common hereditary kidney disease, resulting from mutations in polycystic kidney disease 1 (PKD1) and polycystic kidney disease 2 (PKD2). Clinical data and genetic features of six Chinese families including ADPKD patients were analyzed via Next generation sequencing (NGS), Sanger sequencing, and multiplex ligation-dependent probe amplification. In family A, the proband (II5) with polycystic kidney (PK), hypertension, left ventricular hypertrophy, and valvular heart disease exhibited a heterozygous nonsense mutation, c.5086C>T (p.Gln1696Ter), in PKD1 (NM_001009944). In family B, the proband (II3) with PK, polycystic liver (PL), hypertension, hypertrophy of the left ventricle and septum, valvular heart disease, chronic kidney disease (CKD) stage 5, bilateral renal calculi, and right inguinal hernia exhibited a heterozygous missense mutation, c.6695T>C (p.Phe2232Ser), in PKD1. In family C, the proband (III1) with PK, PL, seminal vesicle cyst, hypertension, CKD stage 3, hypertrophy of the left ventricle and septum, and valvular heart disease harbored a heterozygous nonsense mutation, c.662T>G (p.Leu221Ter), in PKD2 (NM_000297). In family D, the proband (III3) with PK, hypertension, and CKD stage 5 harbored a heterozygous missense mutation, c.8311G>A (p.Glu2771Lys), in PKD1. In family E, the proband (II1) with PK, PL, hypertension, and CKD stage 5 exhibited a heterozygous deletion mutation, exon15-22, in PKD1. In family F, the proband (II2) with PK, PL, CKD stage 3, hypertension, thickened interventricular septum, and valvular heart disease carried a heterozygous missense mutation, c.1649A>G (p.His550Arg), in PKD2. Thus, three novel mutation sites which are responsible for ADPKD were discovered in this study.
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Affiliation(s)
- Hanlu Wang
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Sen Dai
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Jianhui Zhang
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Yi Li
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical UniversityNanjing 210009, China
| | - Yumian Gan
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Tao Lu
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Yaobin Zhu
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, Fujian Medical UniversityFuzhou 350001, China
| | - Jiabin Wu
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Ning Lin
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Faqiang Tang
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
| | - Jiewei Luo
- Shengli Clinical Medical College of Fujian Medical UniversityFuzhou 350001, China
- Fujian Provincial HospitalFuzhou 350001, China
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