1
|
Li S, Ren X, Guan Y, Zhao F, Cao Y, Geng X, Wang Y, Wu N, Wu L, Zhao X. Genetic etiology study in a large cohort with congenital insensitivity to pain with anhidrosis. Pain 2024; 165:1926-1943. [PMID: 38833577 DOI: 10.1097/j.pain.0000000000003252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 02/06/2024] [Indexed: 06/06/2024]
Abstract
ABSTRACT Pathogenic variations in the NTRK1 can cause congenital insensitivity to pain with anhidrosis (CIPA), a rare autosomal recessive inherited neuropathy. The precise diagnosis of CIPA relies on the identification of pathogenic genotypes. Therefore, it is essential to expand the NTRK1 variation spectrum and improve molecular diagnosis methods. In this study, 74 probands with typical manifestations of CIPA but unknown genotypes were recruited. A comprehensive molecular genetic analysis was performed to identify variations in the NTRK1 , using techniques including Sanger and next-generation sequencing, bioinformatic analysis, quantitative polymerase chain reaction (qPCR), gap-PCR, short tandem repeat (STR) genotyping, and reverse-transcription PCR. In addition, functional assays were conducted to determine the pathogenicity of variants of uncertain significance (VUS) and further characterized changes in glycosylation and phosphorylation of 14 overexpressed mutant vectors with variants at different domains in the TrkA protein, which is encoded by NTRK1 . A total of 48 variations in the NTRK1 were identified, including 22 novel ones. When combined with data from another 53 CIPA patients examined in our previous work, this study establishes the largest genotypic and phenotypic spectra of CIPA worldwide, including 127 CIPA families. Moreover, functional studies indicated that the pathogenicity of VUS mainly affected insufficient glycosylation in the extracellular domain and abnormal phosphorylation in the intracellular domain. This study not only provides important evidence for precise diagnosis of CIPA but also further enriches our understanding of the pathogenesis of this disease.
Collapse
Affiliation(s)
- Shuang Li
- Department of Medical Genetics, State Key Laboratory for Complex, Severe, and Rare Diseases, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Xiuzhi Ren
- Pediatric Orthopedics, Children's Hospital of Soochow University, Suzhou, China
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, United States
| | - Feiyue Zhao
- Department of Medical Genetics, State Key Laboratory for Complex, Severe, and Rare Diseases, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yixuan Cao
- Department of Medical Genetics, State Key Laboratory for Complex, Severe, and Rare Diseases, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Xingzhu Geng
- Department of Medical Genetics, State Key Laboratory for Complex, Severe, and Rare Diseases, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yanzhou Wang
- Department of Pediatric Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Lingqian Wu
- Center for Medical Genetics, Hunan Key Laboratory of Medical Genetics & Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha, China
| | - Xiuli Zhao
- Department of Medical Genetics, State Key Laboratory for Complex, Severe, and Rare Diseases, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China
- Pediatric Orthopedics, Children's Hospital of Soochow University, Suzhou, China
| |
Collapse
|
2
|
Sun L, Dai J, Zhang Y, Zhou L, Ren Y, Wang H. A novel NTRK1 splice site variant causing congenital insensitivity to pain with anhidrosis in a Chinese family. Front Genet 2024; 15:1345081. [PMID: 38798698 PMCID: PMC11116696 DOI: 10.3389/fgene.2024.1345081] [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: 01/31/2024] [Accepted: 04/17/2024] [Indexed: 05/29/2024] Open
Abstract
Background Congenital insensitivity to pain with anhidrosis (CIPA, OMIM #256800), also known as hereditary sensory and autonomic neuropathy type Ⅳ (HSAN-IV), is a rare autosomal recessive disorder characterized by recurrent episodic fevers, anhidrosis, insensitivity to noxious stimuli, self-mutilating behavior and intellectual disability. CIPA can be caused by the variants in NTRK1 gene, which encodes a high-affinity tyrosine kinase receptor for nerve growth factor. To ascertain the hereditary cause of a patient with CIPA accompanied by the additional symptoms of mild growth retardation, prone to fracture, underdeveloped nails of fingers and toes, irregular tooth alignment, enamel hypoplasia, postoperative wound healing difficulty, hand and limb deformity, and dislocation of hip joint, whole exome sequencing was used and revealed a compound heterozygous variant in NTRK1. Methods DNA was extracted from peripheral blood samples of pediatric patients and their parents, and subjected to comprehensive analysis using whole-exome sequencing (WES), followed by verification of variant sites in the NTRK1 gene through Sanger sequencing. To elucidate the functional impact of the newly discovered variants, an in vitro experimental system was established. Splicing analysis was conducted using PCR and Sanger sequencing, while expression levels were assessed through qPCR and Western blot techniques. Results One hotspot variant c.851-33T>A(ClinVar ID: 21308) and a novel variant c.850 + 5G>A(ClinVar ID:3069176) was inherited from her father and mother, respectively, identified in the affected individuals. The c.850 + 5G>A variant in NTRK1 resulted in two forms of aberrant mRNA splicing: 13bp deletion (c.838_850del13, p. Val280Ser fs180) and 25bp deletion (826_850del25, p. Val276Ser fs180) in exon 7, both leading to a translational termination at a premature stop codon and forming a C-terminal truncated protein. The expression of two abnormal splicing isoforms was decreased both in the level of mRNA and protein. Conclusion In conclusion, this study elucidated the genetic cause of a patient with CIPA and identified a novel variant c.850 + 5G>A in NTRK1, which broadened the and enriched the NTRK1 mutation spectrum.
Collapse
Affiliation(s)
- Ling Sun
- Department of Cardiology, Children’s Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jin Dai
- Department of Orthopaedics, Suzhou, Jiangsu, China
| | - Yuan Zhang
- Department of Clinical Laboratory, Suzhou, Jiangsu, China
- Laboratory of Pediatric Research, Suzhou, Jiangsu, China
| | - Lijun Zhou
- Department of Clinical Laboratory, Suzhou, Jiangsu, China
- Laboratory of Pediatric Research, Suzhou, Jiangsu, China
| | - Yaqiong Ren
- Department of Clinical Laboratory, Suzhou, Jiangsu, China
- Laboratory of Pediatric Research, Suzhou, Jiangsu, China
| | - Hongying Wang
- Department of Clinical Laboratory, Suzhou, Jiangsu, China
- Laboratory of Pediatric Research, Suzhou, Jiangsu, China
- Institute of Pediatric Research, Children’s Hospital of Soochow University, Suzhou, Jiangsu, China
| |
Collapse
|
3
|
Moraes BC, Ribeiro-Filho HV, Roldão AP, Toniolo EF, Carretero GPB, Sgro GG, Batista FAH, Berardi DE, Oliveira VRS, Tomasin R, Vieceli FM, Pramio DT, Cardoso AB, Figueira ACM, Farah SC, Devi LA, Dale CS, de Oliveira PSL, Schechtman D. Structural analysis of TrkA mutations in patients with congenital insensitivity to pain reveals PLCγ as an analgesic drug target. Sci Signal 2022; 15:eabm6046. [PMID: 35471943 DOI: 10.1126/scisignal.abm6046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Chronic pain is a major health issue, and the search for new analgesics has become increasingly important because of the addictive properties and unwanted side effects of opioids. To explore potentially new drug targets, we investigated mutations in the NTRK1 gene found in individuals with congenital insensitivity to pain with anhidrosis (CIPA). NTRK1 encodes tropomyosin receptor kinase A (TrkA), the receptor for nerve growth factor (NGF) and that contributes to nociception. Molecular modeling and biochemical analysis identified mutations that decreased the interaction between TrkA and one of its substrates and signaling effectors, phospholipase Cγ (PLCγ). We developed a cell-permeable phosphopeptide derived from TrkA (TAT-pQYP) that bound the Src homology domain 2 (SH2) of PLCγ. In HEK-293T cells, TAT-pQYP inhibited the binding of heterologously expressed TrkA to PLCγ and decreased NGF-induced, TrkA-mediated PLCγ activation and signaling. In mice, intraplantar administration of TAT-pQYP decreased mechanical sensitivity in an inflammatory pain model, suggesting that targeting this interaction may be analgesic. The findings demonstrate a strategy to identify new targets for pain relief by analyzing the signaling pathways that are perturbed in CIPA.
Collapse
Affiliation(s)
- Beatriz C Moraes
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Helder V Ribeiro-Filho
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Allan P Roldão
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Elaine F Toniolo
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Gustavo P B Carretero
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Germán G Sgro
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil.,Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040903, Brazil
| | - Fernanda A H Batista
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Damian E Berardi
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Victoria R S Oliveira
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Rebeka Tomasin
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Felipe M Vieceli
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Dimitrius T Pramio
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Alexandre B Cardoso
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Ana C M Figueira
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Shaker C Farah
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Lakshmi A Devi
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Camila S Dale
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Paulo S L de Oliveira
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Deborah Schechtman
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| |
Collapse
|
4
|
Zhang M, Cao X, Li N, Duan G, Zhang X. Autism spectrum disorder in a boy with congenital insensitivity to pain with anhidrosis: a case report. BMC Pediatr 2022; 22:126. [PMID: 35277138 PMCID: PMC8915475 DOI: 10.1186/s12887-022-03196-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/07/2022] [Indexed: 11/12/2022] Open
Abstract
Background In this case report, we described the past history, clinical manifestations, genetic characteristics and cognitive evaluation of a boy with congenital insensitivity to pain with anhidrosis (CIPA) who developed autism spectrum disorder (ASD). Case presentation The boy had an early onset of CIPA at the age of 48 months, and was later diagnosed with ASD at 5 years old. Developmental delays in communication, social skills and the presence of maladaptive behaviors were observed in the patient. Professional treatments significantly improved the developmental delays. Conclusions This case demonstrated that ASD may develop in children with CIPA, and pediatricians should be aware that if they suspect or identify a child with CIPA that they should also be screened for ASD using similar examination and diagnostic tools as shown in the present report. Moreover, therapeutic interventions for ASD was helpful for the remission of both diseases.
Collapse
|
5
|
Li S, Hu HY, Xu JJ, Feng ZK, Sun YQ, Chen X, Yang K, Li YZ, Zhang DL. Identification of novel variations in the NTRK1 gene causing congenital insensitivity to pain with anhidrosis. Mol Genet Genomic Med 2021; 9:e1839. [PMID: 34674383 PMCID: PMC8606206 DOI: 10.1002/mgg3.1839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/22/2021] [Accepted: 09/28/2021] [Indexed: 01/01/2023] Open
Abstract
Background Congenital insensitivity to pain (CIP) conditions are a group of Mendelian disorders with clinical and genetic heterogeneity. CIP with anhidrosis (CIPA) is a distinct subtype caused by biallelic variants in the NTRK1 gene. Methods In this study, six families with CIPA were recruited and submitted to a series of clinical and genetic examinations. Whole‐exome sequencing and whole‐genome sequencing were applied to perform a comprehensive genetic analysis. Sanger sequencing was used as a validation method. Results These patients exhibited phenotypic variability. All probands in the six families were positive for biallelic pathogenic variants in NTRK1. Five individual variants, namely NTRK1: (NM_002529.3) c.851‐33T>A, c.717+2T>C, c.1806‐2A>G, c.1251+1G>A, and c.851‐794C>G, including three novel ones, were identified, which were carried by the six patients in a homozygous or compound heterozygous way. The validation results indicated that all the parents of the six probands, except for one father and one mother, were monoallelic carriers of a single variant. Conclusions The findings in our study extended the variation spectrum of the NTRK1 gene and highlighted the advantage of the integrated application of multiplatform genetic technologies.
Collapse
Affiliation(s)
- Shang Li
- Department of Anesthesiology, Peking University People's Hospital, Beijing, China
| | - Hua-Ying Hu
- Jiaen Genetics Laboratory, Beijing Jiaen Hospital, Beijing, China
| | - Jun-Jun Xu
- Department of Anesthesiology, Peking University People's Hospital, Beijing, China
| | - Zhan-Ke Feng
- Jiaen Genetics Laboratory, Beijing Jiaen Hospital, Beijing, China
| | - Yong-Qing Sun
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Xu Chen
- Department of Orthodontics, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Kai Yang
- Prenatal Diagnosis Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Ya-Zhou Li
- Department of Pediatric Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Dong-Liang Zhang
- Department of Orthodontics, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| |
Collapse
|
6
|
NTRK1 gene-related congenital insensitivity to pain with anhidrosis: a nationwide multicenter retrospective study. Neurogenetics 2021; 22:333-341. [PMID: 34405299 DOI: 10.1007/s10048-021-00668-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 08/08/2021] [Indexed: 10/20/2022]
Abstract
Congenital insensitivity to pain with anhidrosis (CIPA) is a rare autosomal recessive disease resulting from mutations in the NTRK1 gene encoding the neurotrophic tyrosine kinase-1 receptor. In this multicenter observational retrospective study, we investigated CIPA patients identified from French laboratories sequencing the NTRK1 gene, and seven patients were identified. Patients originated from France (2), Suriname (2), Mali (1), Kazakhstan (1), and Algeria (1). Mean age of patients was 9.8 years (4-20), four patients were female (57%), infant developmental milestones were delayed in four cases (57%), and four patients had a family history of consanguinity (57%). Mean age at diagnosis was 4.8 months (3-6), and all patients presented with pain insensitivity, anhidrosis, intellectual disability, self-mutilation, febrile episodes, impaired temperature perception, and autonomous nervous system impairment. Patients also showed an assortment of associated findings, including hyperactivity (86%), emotional lability (86%), joint deformities (71%), bone fractures (57%), abnormal sense of touch, vibration and position (50%), skin, hair and nails abnormalities (28%), and hypothermia episodes (28%). Two patients died at age 9 and 12 years from infection. In three cases, nerve conduction studies showed absent lower limbs sensory nerve action potentials. In one case, sensory nerve biopsy showed complete absence of unmyelinated fibers. Nine NTRK1 pathogenic variants were found, including three newly described mutations. This nationwide study confirms that NTRK1 gene-related CIPA is an extremely rare disorder and expands the genotypic spectrum of NTRK1 mutations.
Collapse
|
7
|
Congenital insensitivity to pain with anhidrosis: A report of two unrelated Chinese families with novel mutations in NTRK1 gene. Med Clin (Barc) 2021; 157:451-453. [PMID: 33422294 DOI: 10.1016/j.medcli.2020.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 02/08/2023]
|
8
|
Zhao F, Mao B, Geng X, Ren X, Wang Y, Guan Y, Li S, Li L, Zhang S, You Y, Cao Y, Yang T, Zhao X. Molecular genetic analysis in 21 Chinese families with congenital insensitivity to pain with or without anhidrosis. Eur J Neurol 2020; 27:1697-1705. [PMID: 32219930 DOI: 10.1111/ene.14234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/19/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE Hereditary sensory and autonomic neuropathies (HSANs) are a group of clinically and genetically heterogeneous neurological disorders characterized by sensory dysfunctions. Here, 21 affected Chinese families are reported, including 19 with congenital insensitivity to pain with anhidrosis (CIPA; namely HSAN IV) and two with congenital insensitivity to pain (CIP; namely HSAN IID) caused by biallelic variations in NTRK1 and SCN9A, respectively, aiming to identify causative variants in these families and compare how different variants in NTRK1 affect the function of tropomyosin receptor kinase A (TrkA). METHODS Recombinant plasmids harboring the wild-type and six mutant alleles (p.Gln216*, p.Glu584Lys, p.Leu595Arg, p.Pro684Leu, p.Val709Leu and p.Arg765Cys) of NTRK1 cDNA were constructed and transfected into HEK293 cells. RESULTS The results suggested that the five missense variants only presented a subtle influence on the expression level and glycosylation of TrkA but compromised the receptor phosphorylation. Our findings also suggested that a synonymous variant c.219C>T in NTRK1 may cause aberrant splicing, indicating a potential novel pathogenic mechanism of CIPA. Furthermore, gross deletion of SCN9A was first associated with CIP. CONCLUSIONS This study identified multiple forms of variants responsible for CIPA/CIP in the Chinese population and might provide new insights into the pathogenesis of CIPA.
Collapse
Affiliation(s)
- F Zhao
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - B Mao
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - X Geng
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - X Ren
- Department of Orthopedic Surgery, People's Hospital of Wuqing District, Tianjin, China
| | - Y Wang
- Department of Pediatric Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Guan
- Department of Anesthesiology and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - S Li
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - L Li
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - S Zhang
- Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Y You
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Y Cao
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - T Yang
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - X Zhao
- Department of Medical Genetics, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China
| |
Collapse
|
9
|
An isoform-selective inhibitor of tropomyosin receptor kinase A behaves as molecular glue. Bioorg Med Chem Lett 2020; 30:126775. [PMID: 31699609 DOI: 10.1016/j.bmcl.2019.126775] [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] [Received: 09/18/2019] [Revised: 10/16/2019] [Accepted: 10/23/2019] [Indexed: 11/22/2022]
Abstract
The production of TrkA-selective inhibitors is considerably difficult because the kinase domains of TrkA and its isoforms TrkB/C have highly homologous amino acid sequences. Here we describe the structural basis for the acquisition of selectivity for a isoform-selective TrkA inhibitor, namely compound V1. The X-ray structure revealed that V1 acts as a molecular glue to stabilize the symmetrical dimer of the TrkA kinase domains. V1 binds to the ATP-binding site and simultaneously engages in the dimeric interface of TrkA. The region of the dimeric interface in TrkA is not conserved in TrkB/C; thus, dimer formation may be a novel mechanism for the production of selective TrkA inhibitors. The biochemical and biophysical assay results confirmed that V1 selectively inhibited TrkA and induced the dimer formation of TrkA, but not TrkB. The binding pocket at the TrkA dimer interface can be used for the production of new isoform-selective TrkA inhibitors.
Collapse
|
10
|
Matsushima N, Takatsuka S, Miyashita H, Kretsinger RH. Leucine Rich Repeat Proteins: Sequences, Mutations, Structures and Diseases. Protein Pept Lett 2019; 26:108-131. [PMID: 30526451 DOI: 10.2174/0929866526666181208170027] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 12/18/2022]
Abstract
Mutations in the genes encoding Leucine Rich Repeat (LRR) containing proteins are associated with over sixty human diseases; these include high myopia, mitochondrial encephalomyopathy, and Crohn's disease. These mutations occur frequently within the LRR domains and within the regions that shield the hydrophobic core of the LRR domain. The amino acid sequences of fifty-five LRR proteins have been published. They include Nod-Like Receptors (NLRs) such as NLRP1, NLRP3, NLRP14, and Nod-2, Small Leucine Rich Repeat Proteoglycans (SLRPs) such as keratocan, lumican, fibromodulin, PRELP, biglycan, and nyctalopin, and F-box/LRR-repeat proteins such as FBXL2, FBXL4, and FBXL12. For example, 363 missense mutations have been identified. Replacement of arginine, proline, or cysteine by another amino acid, or the reverse, is frequently observed. The diverse effects of the mutations are discussed based on the known structures of LRR proteins. These mutations influence protein folding, aggregation, oligomerization, stability, protein-ligand interactions, disulfide bond formation, and glycosylation. Most of the mutations cause loss of function and a few, gain of function.
Collapse
Affiliation(s)
- Norio Matsushima
- Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan.,Institute of Tandem Repeats, Noboribetsu 059-0464, Japan
| | - Shintaro Takatsuka
- Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan
| | - Hiroki Miyashita
- Institute of Tandem Repeats, Noboribetsu 059-0464, Japan.,Hokubu Rinsho Co., Ltd, Sapporo 060-0061, Japan
| | - Robert H Kretsinger
- Department of Biology, University of Virginia, Charlottesville, VA 22904, United States
| |
Collapse
|
11
|
Kong J, An J, Zhang D, Shang Y, Zheng K, Yang Y. Transcriptomic analyses of the biological effects of black carbon exposure to A549 cells. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 246:289-298. [PMID: 31181478 DOI: 10.1016/j.jenvman.2019.05.123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/12/2019] [Accepted: 05/26/2019] [Indexed: 05/23/2023]
Abstract
Ambient black carbon (BC) is found to be associated with increased risk of diverse pulmonary diseases, including acute respiratory inflammation and decreased lung function. Freshly emitted BC (FBC) can be transformed into oxidized BC (OBC) through the photochemical oxidization in the air. How this oxidization process influences the toxicity of BC particles is unclear. Previous studies found FBC and OBC could induce oxidative stress and inflammation. This study aimed to further compare the regulating pathways and tried to reveal the crucial target genes caused by FBC and OBC in A549 cells based on transcriptomic data. A total of 47,000 genes in A549 cells after treated with FBC and OBC were examined using Affymetrix Human U133 plus 2.0 chips. Gene ontology (GO) classification (functional enrichment of differentially expressed genes) and Kyoto encyclopedia of genes and genomes (KEGG) classification (pathway enrichment of differentially expressed genes) were conducted and crucial genes were screened. The results showed that top 50 GO terms of FBC and OBC were not completely consistent. The Go term of cation channel was only identified in OBC group, probably caused by the characteristic that zeta potential of OBC is negative, while, that of FBC is positive. In addition transient receptor potential melastatin 7 (trpm7) gene was suggested to be closely related to this process caused by OBC. There are 47 identical pathways in FBC and OBC group among the top 50 KEGG. The inconsistent pathways are mostly related to inflammation with different up-regulation or down-regulation trends of crucial genes. The KEGG results suggested that FBC and OBC both cause inflammatory responses, but through different regulating pathways. In conclusion, OBC and FBC could induce similar toxic endpoints in A549 cells, but the underline regulating processes are not exactly the same.
Collapse
Affiliation(s)
- Jiexing Kong
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jing An
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Dongping Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yu Shang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Kewen Zheng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
| | - Yiting Yang
- Department of Neurology, Changhai Hospital, Second Military Medical University. Shanghai 200433, China.
| |
Collapse
|
12
|
Gucev Z, Tasic V, Bogevska I, Laban N, Saveski A, Polenakovic M, Plaseska-Karanfilska D, Komlosi K, Winter J, Schweiger S, Nishimura G, Spranger J, Bartsch O. Heterotopic ossifications and Charcot joints: Congenital insensitivity to pain with anhidrosis (CIPA) and a novel NTRK1 gene mutation. Eur J Med Genet 2019; 63:103613. [PMID: 30677517 DOI: 10.1016/j.ejmg.2019.01.003] [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: 07/21/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 10/27/2022]
Abstract
Congenital insensitivity to pain with anhidrosis (CIPA), also known as hereditary sensory and autonomic neuropathy type IV (HSAN-IV), is a rare and severe autosomal recessive disorder. We report on an adult female patient whose clinical findings during childhood were not recognized as CIPA. There was neither complete anhidrosis nor a recognizable sensitivity to heat. Tumorlike swellings of many joints and skeletal signs of Charcot neuropathy developed in adolescence which, together with a history of self-mutilation, led to a clinical suspicion of CIPA confirmed by identification of a novel homozygous variant c.1795G > T in the NTRK1 gene in blood lymphocytes. Both parents were heterozygous for the mutation. The variant predicts a premature stop codon (p.Gly599Ter) and thus represents a pathogenic variant; the first reported in the Southeastern European population.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Katalin Komlosi
- Institute of Human Genetics, Medical Center of the Johannes Gutenberg University Mainz, University of Mainz, Germany
| | - Jennifer Winter
- Institute of Human Genetics, Medical Center of the Johannes Gutenberg University Mainz, University of Mainz, Germany
| | - Susann Schweiger
- Institute of Human Genetics, Medical Center of the Johannes Gutenberg University Mainz, University of Mainz, Germany
| | - Gen Nishimura
- Intractable Disease Center, Saitama Medical University Hospital, Saitama, Japan
| | | | - Oliver Bartsch
- Institute of Human Genetics, Medical Center of the Johannes Gutenberg University Mainz, University of Mainz, Germany
| |
Collapse
|
13
|
Li N, Guo S, Wang Q, Duan G, Sun J, Liu Y, Zhang J, Wang C, Zhu C, Liu J, Zhang X. Heterogeneity of clinical features and mutation analysis of NTRK1 in Han Chinese patients with congenital insensitivity to pain with anhidrosis. J Pain Res 2019; 12:453-465. [PMID: 30774415 PMCID: PMC6348974 DOI: 10.2147/jpr.s188566] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Purpose Congenital insensitivity to pain with anhidrosis (CIPA) is a rare inherited disorder whose core clinical features consist of no response to noxious stimuli and inability to sweat under any conditions. Our goal was to characterize the details of phenotypic and genotypic features in Chinese CIPA patients. Patients and methods Personal data and clinical information were investigated by interview and physical examination. DNA was extracted from blood samples of patients and their available familial members and subjected to genetic analysis. Results A total of 41 Han Chinese CIPA patients from 35 unrelated families were recruited. The distribution of patients was mainly in the central and southern regions of China, with a male to female ratio of 3:1 and a mortality rate of 7.3%. Heterogeneity of clinical features, including pain insensitivity, temperature sensation, and complications, were cataloged. Interestingly, some patients had "visceral pain" sensation, and there was a significant difference in temperature perception and thermal pain between individuals. The incidence of bone and joint fractures was 49%. The characteristics of 19 mutations of NTRK1 in 41 patients, with five novel mutations, were identified. More than 63% of patients had the splice mutation, c.851-33 T>A, which strongly suggests that it may be a common pathogenic site in Han Chinese patients. Conclusion Current findings expand our knowledge about the spectrum of phenotypic features and the racial characteristics of NTRK1 mutations of CIPA patients in the Han Chinese population.
Collapse
Affiliation(s)
- Ningbo Li
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Shanna Guo
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Qingli Wang
- Department of Anesthesiology, Wuhan General Hospital of Guangzhou Military, Wuhan, China
| | - Guangyou Duan
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jiaoli Sun
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Yi Liu
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Jin Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Cong Wang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Changmao Zhu
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| | - Jingyu Liu
- Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, China
| | - Xianwei Zhang
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
| |
Collapse
|
14
|
Li N, Sun J, Guo S, Liu Y, Wang C, Zhu C, Zhang X. Phenotypic and genotypic features of a pair of Chinese identical twins with congenital insensitivity to pain and anhidrosis: A case report. Medicine (Baltimore) 2018; 97:e13209. [PMID: 30461622 PMCID: PMC6392968 DOI: 10.1097/md.0000000000013209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
RATIONALE Congenital insensitivity to pain with anhidrosis (CIPA) is a rare autosomal recessive genetic disorder characterized by insensitivity to noxious stimulus and the absence of sweating. Fractures and joint destruction are common complications, but detailed studies on mineral and skeletal homeostasis are not available. Mental retardation is often reported, but detailed observations during childhood are lacking. PATIENT CONCERNS A pair of 46-month-old Chinese identical twin brothers was presented at our hospital. The brothers had the typical manifestations of insensitivity to noxious stimulus, inability to sweat, and recurrent episodes of unexplained fever. Fortunately, they did not present common complications such as self-mutilation, trauma, bruise, and repeated bone fractures. DIAGNOSES Two novel compound heterozygous variants of NTRK1 (c.632T > A and c.1253_1254delTC) were identified. INTERVENTIONS The patients were subjected to routine and specialist clinical examinations. Daily care and symptomatic treatment were given. OUTCOME X-ray films of proband 2 showed a fracture in the first metatarsal. Decreased bone mineral density (BMD) and mild-to-moderate retardation of the Gesell developmental schedules (GDS), especially language and adaptability, were observed. Evaluation results for BMD and GDS in proband 2 were worse than those in his brother. LESSONS The current findings expand our knowledge about the spectrum of phenotypic and genotypic features of CIPA, which will help facilitate future genotype-phenotype association studies. Daily care by parents promotes favorable outcomes in patients.
Collapse
|
15
|
Liu Z, Liu J, Liu G, Cao W, Liu S, Chen Y, Zuo Y, Chen W, Chen J, Zhang Y, Huang S, Qiu G, Giampietro PF, Zhang F, Wu Z, Wu N. Phenotypic heterogeneity of intellectual disability in patients with congenital insensitivity to pain with anhidrosis: A case report and literature review. J Int Med Res 2018; 46:2445-2457. [PMID: 29619836 PMCID: PMC6023048 DOI: 10.1177/0300060517747164] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Congenital insensitivity to pain with anhidrosis (CIPA) is a rare autosomal recessive heterogeneous disorder mainly caused by mutations in the neurotrophic tyrosine receptor kinase 1 gene (NTRK1) and characterized by insensitivity to noxious stimuli, anhidrosis, and intellectual disability. We herein report the first north Han Chinese patient with CIPA who exhibited classic phenotypic features and severe intellectual disability caused by a homozygous c.851-33T>A mutation of NTRK1, resulting in aberrant splicing and an open reading frame shift. We reviewed the literature and performed in silico analysis to determine the association between mutations and intellectual disability in patients with CIPA. We found that intellectual disability was correlated with the specific Ntrk1 protein domain that a mutation jeopardized. Mutations located peripheral to the Ntrk1 protein do not influence important functional domains and tend to cause milder symptoms without intellectual disability. Mutations that involve critical amino acids in the protein are prone to cause severe symptoms, including intellectual disability.
Collapse
Affiliation(s)
- Zhenlei Liu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,2 Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, PR China.,*These authors contributed equally to this work
| | - Jiaqi Liu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,3 Breast Surgical Oncology, Cancer Hospital of Chinese Academy of Medical Sciences, Beijing, PR China.,*These authors contributed equally to this work
| | - Gang Liu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China.,*These authors contributed equally to this work
| | - Wenjian Cao
- 5 State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, PR China
| | - Sen Liu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China
| | - Yixin Chen
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Yuzhi Zuo
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China
| | - Weisheng Chen
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Jun Chen
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Yu Zhang
- 6 Berry Genomics Co., Ltd., Beijing, PR China
| | - Shishu Huang
- 7 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, West China Hospital, Sichuan University, Chengdu, PR China
| | - Guixing Qiu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China
| | - Philip F Giampietro
- 8 Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Feng Zhang
- 4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China.,5 State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, PR China
| | - Zhihong Wu
- 4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China.,9 Department of Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Nan Wu
- 1 Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.,4 Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, PR China
| |
Collapse
|