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Hjeij R, Leslie J, Rizk H, Dworniczak B, Olbrich H, Raidt J, Bode SFN, Gardham A, Stals K, Al-Haggar M, Osman E, Crosby A, Eldesoky T, Baple E, Omran H. Biallelic Variants in MNS1 Are Associated with Laterality Defects and Respiratory Involvement. Cells 2024; 13:1017. [PMID: 38920647 DOI: 10.3390/cells13121017] [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: 04/30/2024] [Revised: 05/27/2024] [Accepted: 06/06/2024] [Indexed: 06/27/2024] Open
Abstract
Defects in motile cilia, termed motile ciliopathies, result in clinical manifestations affecting the respiratory and reproductive system, as well as laterality defects and hydrocephalus. We previously defined biallelic MNS1 variants causing situs inversus and male infertility, mirroring the findings in Mns1-/- mice. Here, we present clinical and genomic findings in five newly identified individuals from four unrelated families affected by MNS1-related disorder. Ciliopathy panel testing and whole exome sequencing identified one previously reported and two novel MNS1 variants extending the genotypic spectrum of disease. A broad spectrum of laterality defects including situs inversus totalis and heterotaxia was confirmed. Interestingly, a single affected six-year-old girl homozygous for an MNS1 nonsense variant presented with a history of neonatal respiratory distress syndrome, recurrent respiratory tract infections, chronic rhinitis, and wet cough. Accordingly, immunofluorescence analysis showed the absence of MNS1 from the respiratory epithelial cells of this individual. Two other individuals with hypomorphic variants showed laterality defects and mild respiratory phenotype. This study represents the first observation of heterotaxia and respiratory disease in individuals with biallelic MNS1 variants, an important extension of the phenotype associated with MNS1-related motile ciliopathy disorder.
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Grants
- HJ 7/1-1, HJ 7/1-3, OM6/7, OM6/8, OM6/10, OM6/14, OM6/16, CRU 326, OM6/11, RA3522/1-1, OL 450/1 Deutsche Forschungsgemeinschaft
- Om2/009/12, Om2/015/16, Om2/010/20 Institute for Interdisciplinary Medicine
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Affiliation(s)
- Rim Hjeij
- Department of General Pediatrics, University Hospital Muenster, 48149 Muenster, Germany
| | - Joseph Leslie
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Hoda Rizk
- Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - Bernd Dworniczak
- Department of General Pediatrics, University Hospital Muenster, 48149 Muenster, Germany
| | - Heike Olbrich
- Department of General Pediatrics, University Hospital Muenster, 48149 Muenster, Germany
| | - Johanna Raidt
- Department of General Pediatrics, University Hospital Muenster, 48149 Muenster, Germany
| | | | - Alice Gardham
- North West Thames Regional Genetic Service, North West London Hospitals, London HA1 2UJ, UK
| | - Karen Stals
- Exeter Genomics Laboratory (NHS South West Genomic Laboratory Hub), Royal Devon University Healthcare NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Mohammad Al-Haggar
- Genetics Unit, Pediatrics Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Engy Osman
- Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - Andrew Crosby
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Tarek Eldesoky
- Department of Pediatrics, Faculty of Medicine, University of Mansoura, Mansoura 35516, Egypt
| | - Emma Baple
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter EX2 5DW, UK
- Peninsula Clinical Genetics Service, Royal Devon & Exeter Hospital (Heavitree), Exeter EX1 2ED, UK
| | - Heymut Omran
- Department of General Pediatrics, University Hospital Muenster, 48149 Muenster, Germany
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Wee WB, Kinghorn B, Davis SD, Ferkol TW, Shapiro AJ. Primary Ciliary Dyskinesia. Pediatrics 2024; 153:e2023063064. [PMID: 38695103 PMCID: PMC11153322 DOI: 10.1542/peds.2023-063064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 03/02/2024] [Accepted: 03/25/2024] [Indexed: 06/02/2024] Open
Abstract
Primary ciliary dyskinesia (PCD) is a rare, genetic disease characterized by dysfunctional motile cilia and abnormal mucociliary clearance, resulting in chronic sino-oto-pulmonary disease, neonatal respiratory distress, subfertility, and organ laterality defects. Over the past 2 decades, research and international collaborations have led to an improved understanding of disease prevalence, classic and variable phenotypes, novel diagnostics, genotype-phenotype correlations, long term morbidity, and innovative therapeutics. However, PCD is often underrecognized in clinical settings and the recent analyses of genetic databases suggest that only a fraction of these patients are being accurately diagnosed. Knowledge of significant advancements, from pathophysiology to the expanded range of clinical manifestations, will have important clinical impacts. These may include increasing disease recognition, improving diagnostic testing and management, and establishing an adequate pool of affected patients to enroll in upcoming clinical therapeutic trials. The objective of this state-of-the-art review is for readers to gain a greater understanding of the clinical spectrum of motile ciliopathies, cutting-edge diagnostic practices, emerging genotype-phenotype associations, and currently accepted management of people with PCD.
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Affiliation(s)
- Wallace B. Wee
- Hospital for Sick Children, Toronto, Ontario, Canada
- Child Health Evaluative Sciences, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- Stollery Children’s Hospital, Edmonton, Alberta, Canada
| | - BreAnna Kinghorn
- University of Washington, School of Medicine, Pediatrics, Seattle, Washington
| | - Stephanie D. Davis
- Department of Pediatrics, University of North Carolina School of Medicine, UNC Children’s, Chapel Hill, North Carolina
| | - Thomas W. Ferkol
- Department of Pediatrics, University of North Carolina School of Medicine, UNC Children’s, Chapel Hill, North Carolina
| | - Adam J. Shapiro
- McGill University Health Centre Research Institute, Montreal Children’s Hospital, Montreal, Quebec, Canada
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Liu Z, Sa G, Zhang Z, Wu Q, Zhou J, Yang X. Regulatory role of primary cilia in oral and maxillofacial development and disease. Tissue Cell 2024; 88:102389. [PMID: 38714113 DOI: 10.1016/j.tice.2024.102389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/09/2024]
Abstract
Primary cilia have versatile functions, such as receiving signals from the extracellular microenvironment, mediating signaling transduction, and transporting ciliary substances, in tissue and organ development and clinical disease pathogenesis. During early development (embryos within 10 weeks) in the oral and maxillofacial region, defects in the structure and function of primary cilia can result in severe craniofacial malformations. For example, mice with mutations in the cilia-related genes Kif3a and IFT88 exhibit midline expansion and cleft lip/palate, which occur due to abnormalities in the fusion of the single frontonasal prominence and maxillary prominences. In the subsequent development of the oral and maxillofacial region, we discussed the regulatory role of primary cilia in the development of the maxilla, mandible, Meckel cartilage, condylar cartilage, lip, tongue, and tooth, among others. Moreover, primary cilia are promising regulators in some oral and maxillofacial diseases, such as tumors and malocclusion. We also summarize the regulatory mechanisms of primary cilia in oral and maxillofacial development and related diseases, including their role in various signaling transduction pathways. For example, aplasia of submandibular glands in the Kif3a mutant mice is associated with a decrease in SHH signaling within the glands. This review summarizes the similarities and specificities of the role of primary cilia in tissue and organ development and disease progression in the oral and maxillofacial region, which is expected to contribute several ideas for the treatment of primary cilia-related diseases.
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Affiliation(s)
- Zhan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Guoliang Sa
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China; Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Zhuoyu Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Qingwei Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Jing Zhou
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, PR China
| | - Xuewen Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China; Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Wuhan University, Wuhan, PR China.
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4
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Matsumura E, Nohara K, Fukatsu H, Tanaka N, Fujii N, Sakai T. Effects of Thickening Agents on the Mucociliary Transport Function: Comparison by the Type of Thickening Agents and the Viscosity of Thickened Water. Dysphagia 2024:10.1007/s00455-024-10704-3. [PMID: 38777870 DOI: 10.1007/s00455-024-10704-3] [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: 11/07/2023] [Accepted: 03/26/2024] [Indexed: 05/25/2024]
Abstract
Thickening agents effectively prevent liquid aspiration, but their impact on the ease of discharging aspirated liquids from the trachea remains unclear due to alterations in the physical properties of liquids. This study clarifies the effects of thickening agents, comprising various raw materials, on mucociliary transport function, focusing on the viscosities of thickened waters. The subjects were 23 healthy adults. Five types of saccharin solution were prepared: a solution without a thickening agent, a starch-based nectar-like solution, a starch-based honey-like solution, a xanthan-gum-based nectar-like solution, and a xanthan-gum-based honey-like solution. Using these five types of saccharin solutions randomly, each subject underwent five trials of the saccharine dye test to evaluate the mucociliary transport function of the respiratory tract. The saccharin time was defined as the time from the placement of the saccharin solution on the nasal vestibule of the subject to when the subject reported that they became aware of the sweetness. The saccharin transit times for all samples of thickened water were longer compared to those of water without a thickening agent (p < 0.01). A comparison between thickened water samples with different viscosities showed that the saccharin transit time was longer when thickened water samples with high viscosity were prepared using the same thickening agent (p < 0.01). This suggests that while thickening reduces aspiration, the use of thickening agents may increase the difficulty in discharging aspirated fluids from the trachea.
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Affiliation(s)
- Erika Matsumura
- Division for Oral-Facial Disorders, Osaka University Dental Hospital, Osaka, Japan
- Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kanji Nohara
- Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Hikari Fukatsu
- Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, 565-0871, Japan
- Fukatsu Dental Clinic, Mie, Japan
| | - Nobukazu Tanaka
- Division for Oral-Facial Disorders, Osaka University Dental Hospital, Osaka, Japan
| | - Nami Fujii
- Division for Oral-Facial Disorders, Osaka University Dental Hospital, Osaka, Japan
| | - Takayoshi Sakai
- Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka, 565-0871, Japan
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5
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Shen C, Shen Y, Huang W, Zhang A, Zou T, Guo D, Wang H, Wu J, Hu H, Xiang M, Ye B. A novel homozygous RSPH4A variant in a family with primary ciliary dyskinesia and literature review. Front Genet 2024; 15:1364476. [PMID: 38818043 PMCID: PMC11137616 DOI: 10.3389/fgene.2024.1364476] [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: 01/02/2024] [Accepted: 04/10/2024] [Indexed: 06/01/2024] Open
Abstract
Introduction: Primary ciliary dyskinesia (PCD) is a rare heterogeneous disease caused by abnormalities in motile cilia. In this case report, we first analyzed the clinical and genetic data of a proband who was suspected of having PCD on the basis of her clinical and radiological findings. Methods: Whole-exome sequencing was performed, and a variant in the RSPH4A gene was identified in the proband. Sanger sequencing was used for validation of RSPH4A variants in the proband, her sister, her daughter and her parents. Finally, the phenotypic features of the patient were analyzed, and the current literature was reviewed to better understand the gene variants in PCD related to hearing loss and the clinical manifestations of the RSPH4A variant in PCD. Results: The chief clinical symptoms of this proband included gradual mixed hearing loss, otitis media, anosmia, sinusitis, recurrent cough and infertility. Her DNA sequencing revealed a novel homozygous T to C transition at position 1321 within exon 3 of RSPH4A according to genetic testing results. This variant had never been reported before. The homozygous variant resulted in an amino acid substitution of tryptophan by arginine at position 441 (p.Trp441Arg). The same variant was also found in the proband's sister, and a heterozygous pathogenic variant was identified among immediate family members, including the proband's daughter and parents. Discussion: A literature review showed that 16 pathogenic variants in RSPH4A have been reported. Hearing loss had only been observed in patients with the RSPH4A (c.921+3_6delAAGT) splice site mutation, and the specific type of hearing loss was not described.
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Affiliation(s)
- Chenling Shen
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Otolaryngology and Head and Neck Surgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yilin Shen
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiyi Huang
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Tianyuan Zou
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Otolaryngology and Head and Neck Surgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dongye Guo
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hao Wang
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jichang Wu
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haixia Hu
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mingliang Xiang
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Ye
- Department of Otolaryngology and Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Audiology and Speech-Language Pathology, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Graziani A, Rocca MS, Vinanzi C, Masi G, Grande G, De Toni L, Ferlin A. Genetic Causes of Qualitative Sperm Defects: A Narrative Review of Clinical Evidence. Genes (Basel) 2024; 15:600. [PMID: 38790229 PMCID: PMC11120687 DOI: 10.3390/genes15050600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/26/2024] [Accepted: 05/01/2024] [Indexed: 05/26/2024] Open
Abstract
Several genes are implicated in spermatogenesis and fertility regulation, and these genes are presently being analysed in clinical practice due to their involvement in male factor infertility (MFI). However, there are still few genetic analyses that are currently recommended for use in clinical practice. In this manuscript, we reviewed the genetic causes of qualitative sperm defects. We distinguished between alterations causing reduced sperm motility (asthenozoospermia) and alterations causing changes in the typical morphology of sperm (teratozoospermia). In detail, the genetic causes of reduced sperm motility may be found in the alteration of genes associated with sperm mitochondrial DNA, mitochondrial proteins, ion transport and channels, and flagellar proteins. On the other hand, the genetic causes of changes in typical sperm morphology are related to conditions with a strong genetic basis, such as macrozoospermia, globozoospermia, and acephalic spermatozoa syndrome. We tried to distinguish alterations approved for routine clinical application from those still unsupported by adequate clinical studies. The most important aspect of the study was related to the correct identification of subjects to be tested and the correct application of genetic tests based on clear clinical data. The correct application of available genetic tests in a scenario where reduced sperm motility and changes in sperm morphology have been observed enables the delivery of a defined diagnosis and plays an important role in clinical decision-making. Finally, clarifying the genetic causes of MFI might, in future, contribute to reducing the proportion of so-called idiopathic MFI, which might indeed be defined as a subtype of MFI whose cause has not yet been revealed.
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Affiliation(s)
- Andrea Graziani
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Maria Santa Rocca
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Cinzia Vinanzi
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Giulia Masi
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Giuseppe Grande
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
| | - Luca De Toni
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
| | - Alberto Ferlin
- Department of Medicine, University of Padova, 35128 Padova, Italy; (A.G.); (G.M.); (L.D.T.)
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, 35128 Padova, Italy; (M.S.R.); (C.V.); (G.G.)
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7
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Carr KA, Moore PE, O'Connor MG. The utility of nasal nitric oxide in the diagnostic evaluation of primary ciliary dyskinesia. Pediatr Pulmonol 2024; 59:1410-1417. [PMID: 38380959 PMCID: PMC11058016 DOI: 10.1002/ppul.26929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/05/2024] [Accepted: 02/12/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND There is no gold-standard test for primary ciliary dyskinesia (PCD), rather American Thoracic Society guidelines recommend starting with nasal nitric oxide (nNO) in children ≥5 years old and confirming the diagnosis with genetic testing or ciliary biopsy with transmission electron microscopy (TEM). These guidelines have not been studied in a clinical setting. We present a case series describing the PCD diagnostic process at our pediatric PCD center. METHODS Diagnostic data from 131 patients undergoing PCD consultation were reviewed. RESULTS In all participants ≥ 5 years old and who completed nNO using resistor methodology, the first diagnostic test performed was nNO in 77% (73/95), genetic testing in 14% (13/95), and TEM in <1% (9/95). nNO was the only diagnostic test performed in 75% (55/73) of participants who completed nNO first. Seventy-five percent (55/73) had a single above the cutoff nNO value and PCD was determined to be unlikely in 91% (50/55) without performing additional confirmatory testing. Eleven percent (8/73) had multiple below the cutoff nNO values, with 38% (3/8) being diagnosed with PCD by confirmatory testing and 50% (4/8) with negative confirmatory testing, but being managed as PCD. The genetic testing positivity rate was 50% in participants who completed nNO first and 8% when genetic testing was completed first. CONCLUSION nNO is useful in three situations: an initial above the cutoff nNO value makes PCD unlikely and prevents additional confirmatory testing, repetitively below the cutoff nNO values without positive confirmatory testing suggests a probable PCD diagnosis and the yield of genetic testing is higher when nNO is performed first.
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Affiliation(s)
- Katherine A Carr
- Department of Pediatric Allergy, Immunology and Pulmonary Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Paul E Moore
- Department of Pediatric Allergy, Immunology and Pulmonary Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Michael G O'Connor
- Department of Pediatric Allergy, Immunology and Pulmonary Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Arwas N, Gatt D, Aviram M, Abramsky R, Hazan G, Goldbart A, Amirav I, Golan-Tripto I. Neonatal diagnosis of primary ciliary dyskinesia in a high consanguinity population: a single tertiary center experience. Eur J Pediatr 2024:10.1007/s00431-024-05574-8. [PMID: 38679661 DOI: 10.1007/s00431-024-05574-8] [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: 02/24/2024] [Revised: 04/02/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
Though PCD usually presents after birth in term neonates, diagnosing PCD during the neonatal and infancy stages is uncommon, particularly in children who do not exhibit laterality defects. We report our recent experience with the diagnosis of PCD in the neonatal and early infantile period in a highly consanguine population. This was achieved by implementing a novel genetic-based diagnostic approach based on direct testing for recognized regional genetic variants. We conducted a retrospective analysis of children diagnosed with PCD at Soroka University Medical Center during the neonatal or early infantile period between 2020 and 2023. We included children under 3 months of age who had a genetic confirmation of PCD, as evidenced by the presence of two pathogenic variants in recognized genes. Genetic testing targeted regional genetic variants in previously identified PCD genes. Eight patients were included. The median age at diagnosis was 12.5 days. Three (38%) were born prematurely < 34 weeks gestational age. All patients were presented with respiratory distress and hypoxemia after birth. The median duration of oxygen support was 23 days, and upper lobe atelectasis was present in five patients (63%). Congenital cardiac malformation was present in four patients. Organ laterality defects were present in four patients. Genetic mutations identified were in the DNAAF5, DNAL1, DNAAF3, and DNAH1 genes. Conclusion: Neonatal diagnosis of PCD is uncommon, especially in atypical presentations such as children without laterality defects or preterms. Focusing on a genetic diagnosis of the local tribal pathogenic variants promotes a potential cost-efficient test leading to earlier diagnosis. There is a need for a standardized protocol for earlier diagnosis of PCD in high-consanguinity areas. What is Known: • Primary ciliary dyskinesia (PCD) typically presents after birth in term neonates. • Diagnosing PCD during neonatal and infancy stages is challenging, particularly in children without laterality defects. What is New: • A novel genetic-based diagnostic approach was implemented on the neonatal population in a highly consanguine community, focusing on direct testing for regional genetic variants, leading to early and rapid diagnosis of PCD.
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Affiliation(s)
- Noga Arwas
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel.
| | - Dvir Gatt
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel
| | - Micha Aviram
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel
| | - Ramy Abramsky
- Neonatology Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Guy Hazan
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel
| | - Aviv Goldbart
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel
| | - Israel Amirav
- Pediatric Pulmonology Unit, Dana-Dwek Children's Hospital, Tel Aviv, Israel
| | - Inbal Golan-Tripto
- Pediatric Pulmonology Unit, Faculty of Health Sciences, Soroka University Medical Center, Ben Gurion University, PO box 151, Beer-Sheva, Israel
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9
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Dodd DO, Mechaussier S, Yeyati PL, McPhie F, Anderson JR, Khoo CJ, Shoemark A, Gupta DK, Attard T, Zariwala MA, Legendre M, Bracht D, Wallmeier J, Gui M, Fassad MR, Parry DA, Tennant PA, Meynert A, Wheway G, Fares-Taie L, Black HA, Mitri-Frangieh R, Faucon C, Kaplan J, Patel M, McKie L, Megaw R, Gatsogiannis C, Mohamed MA, Aitken S, Gautier P, Reinholt FR, Hirst RA, O'Callaghan C, Heimdal K, Bottier M, Escudier E, Crowley S, Descartes M, Jabs EW, Kenia P, Amiel J, Bacci GM, Calogero C, Palazzo V, Tiberi L, Blümlein U, Rogers A, Wambach JA, Wegner DJ, Fulton AB, Kenna M, Rosenfeld M, Holm IA, Quigley A, Hall EA, Murphy LC, Cassidy DM, von Kriegsheim A, Papon JF, Pasquier L, Murris MS, Chalmers JD, Hogg C, Macleod KA, Urquhart DS, Unger S, Aitman TJ, Amselem S, Leigh MW, Knowles MR, Omran H, Mitchison HM, Brown A, Marsh JA, Welburn JPI, Ti SC, Horani A, Rozet JM, Perrault I, Mill P. Ciliopathy patient variants reveal organelle-specific functions for TUBB4B in axonemal microtubules. Science 2024; 384:eadf5489. [PMID: 38662826 DOI: 10.1126/science.adf5489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 03/20/2024] [Indexed: 05/03/2024]
Abstract
Tubulin, one of the most abundant cytoskeletal building blocks, has numerous isotypes in metazoans encoded by different conserved genes. Whether these distinct isotypes form cell type- and context-specific microtubule structures is poorly understood. Based on a cohort of 12 patients with primary ciliary dyskinesia as well as mouse mutants, we identified and characterized variants in the TUBB4B isotype that specifically perturbed centriole and cilium biogenesis. Distinct TUBB4B variants differentially affected microtubule dynamics and cilia formation in a dominant-negative manner. Structure-function studies revealed that different TUBB4B variants disrupted distinct tubulin interfaces, thereby enabling stratification of patients into three classes of ciliopathic diseases. These findings show that specific tubulin isotypes have distinct and nonredundant subcellular functions and establish a link between tubulinopathies and ciliopathies.
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Affiliation(s)
- Daniel O Dodd
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Sabrina Mechaussier
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Patricia L Yeyati
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Fraser McPhie
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jacob R Anderson
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Chen Jing Khoo
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Amelia Shoemark
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Deepesh K Gupta
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Thomas Attard
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Maimoona A Zariwala
- Department of Pathology and Laboratory Medicine, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Marie Legendre
- Molecular Genetics Laboratory, Sorbonne Université, Assistance Publique - Hôpitaux de Paris (AP-HP), Hôpital Armand Trousseau, Paris 75012, France
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
| | - Diana Bracht
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Julia Wallmeier
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Miao Gui
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Mahmoud R Fassad
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt
| | - David A Parry
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Peter A Tennant
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Alison Meynert
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Gabrielle Wheway
- Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Lucas Fares-Taie
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Holly A Black
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
- South East of Scotland Genetics Service, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Rana Mitri-Frangieh
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
- Biomechanics and Respiratory Apparatus, IMRB, U955 INSERM - Université Paris Est Créteil, CNRS ERL 7000, Créteil 94000, France
| | - Catherine Faucon
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
| | - Josseline Kaplan
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Mitali Patel
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- MRC Prion Unit, Institute of Prion Diseases, University College London, London W1W 7FF, UK
| | - Lisa McKie
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Roly Megaw
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
- Princess Alexandra Eye Pavilion, Edinburgh EH3 9HA, UK
| | - Christos Gatsogiannis
- Center for Soft Nanoscience and Institute of Medical Physics and Biophysics, Münster 48149, Germany
| | - Mai A Mohamed
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- Biochemistry Division, Chemistry Department, Faculty of Science, Zagazig University, Ash Sharqiyah 44519, Egypt
| | - Stuart Aitken
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Philippe Gautier
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Finn R Reinholt
- Core Facility for Electron Microscopy, Department of Pathology, Oslo University Hospital-Rikshospitalet, Oslo 0372, Norway
| | - Robert A Hirst
- Centre for PCD Diagnosis and Research, Department of Respiratory Sciences, University of Leicester, Leicester LE1 9HN, UK
| | - Chris O'Callaghan
- Centre for PCD Diagnosis and Research, Department of Respiratory Sciences, University of Leicester, Leicester LE1 9HN, UK
| | - Ketil Heimdal
- Department of Medical Genetics, Oslo University Hospital, Oslo 0407, Norway
| | - Mathieu Bottier
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Estelle Escudier
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
| | - Suzanne Crowley
- Paediatric Department of Allergy and Lung Diseases, Oslo University Hospital, Oslo 0407, Norway
| | - Maria Descartes
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35294-0024, USA
| | - Ethylin W Jabs
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York 10029-6504, New York, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, NY 55905, USA
| | - Priti Kenia
- Department of Paediatric Respiratory Medicine, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham B15 2TG, UK
| | - Jeanne Amiel
- Département de Génétique, Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris (AP-HP), Paris 75015, France
- Laboratory of Embryology and Genetics of Human Malformations, INSERM UMR 1163, Institut Imagine, Université de Paris, Paris 75015, France
| | - Giacomo Maria Bacci
- Pediatric Ophthalmology Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Claudia Calogero
- Pediatric Pulmonary Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Viviana Palazzo
- Medical Genetics Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Lucia Tiberi
- Medical Genetics Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | | | - Andrew Rogers
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Jennifer A Wambach
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Daniel J Wegner
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Anne B Fulton
- Department of Ophthalmology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Margaret Kenna
- Department of Otolaryngology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Margaret Rosenfeld
- Department of Pediatrics, University of Washington School of Medicine and Seattle Children's Research Institute, Seattle, WA 98015, USA
| | - Ingrid A Holm
- Division of Genetics and Genomics and the Manton Center for Orphan Diseases Research, Boston Children's Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115 USA
| | - Alan Quigley
- Department of Paediatric Radiology, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
| | - Emma A Hall
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Laura C Murphy
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Diane M Cassidy
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Alex von Kriegsheim
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jean-François Papon
- ENT Department, Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris-Saclay University, Le Kremlin-Bicêtre 94270, France
| | - Laurent Pasquier
- Medical Genetics Department, CHU Pontchaillou, Rennes 35033, France
| | - Marlène S Murris
- Department of Pulmonology, Transplantation, and Cystic Fibrosis Centre, Larrey Hospital, Toulouse 31400, France
| | - James D Chalmers
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Claire Hogg
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Kenneth A Macleod
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
| | - Don S Urquhart
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
- Department of Child Life and Health, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Stefan Unger
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
- Department of Child Life and Health, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Timothy J Aitman
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Serge Amselem
- Molecular Genetics Laboratory, Sorbonne Université, Assistance Publique - Hôpitaux de Paris (AP-HP), Hôpital Armand Trousseau, Paris 75012, France
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
| | - Margaret W Leigh
- Department of Pediatrics, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Michael R Knowles
- Department of Medicine, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Heymut Omran
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Hannah M Mitchison
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alan Brown
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Joseph A Marsh
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Julie P I Welburn
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Shih-Chieh Ti
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Amjad Horani
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jean-Michel Rozet
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Isabelle Perrault
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Pleasantine Mill
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
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10
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Fleming A, Galey M, Briggs L, Edwards M, Hogg C, John S, Wilkinson S, Quinn E, Rai R, Burgoyne T, Rogers A, Patel MP, Griffin P, Muller S, Carr SB, Loebinger MR, Lucas JS, Shah A, Jose R, Mitchison HM, Shoemark A, Miller DE, Morris-Rosendahl DJ. Combined approaches, including long-read sequencing, address the diagnostic challenge of HYDIN in primary ciliary dyskinesia. Eur J Hum Genet 2024:10.1038/s41431-024-01599-7. [PMID: 38605126 DOI: 10.1038/s41431-024-01599-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024] Open
Abstract
Primary ciliary dyskinesia (PCD), a disorder of the motile cilia, is now recognised as an underdiagnosed cause of bronchiectasis. Accurate PCD diagnosis comprises clinical assessment, analysis of cilia and the identification of biallelic variants in one of 50 known PCD-related genes, including HYDIN. HYDIN-related PCD is underdiagnosed due to the presence of a pseudogene, HYDIN2, with 98% sequence homology to HYDIN. This presents a significant challenge for Short-Read Next Generation Sequencing (SR-NGS) and analysis, and many diagnostic PCD gene panels do not include HYDIN. We have used a combined approach of SR-NGS with bioinformatic masking of HYDIN2, and state-of-the-art long-read Nanopore sequencing (LR_NGS), together with analysis of respiratory cilia including transmission electron microscopy and immunofluorescence to address the underdiagnosis of HYDIN as a cause of PCD. Bioinformatic masking of HYDIN2 after SR-NGS facilitated the detection of biallelic HYDIN variants in 15 of 437 families, but compromised the detection of copy number variants. Supplementing testing with LR-NGS detected HYDIN deletions in 2 families, where SR-NGS had detected a single heterozygous HYDIN variant. LR-NGS was also able to confirm true homozygosity in 2 families when parental testing was not possible. Utilising a combined genomic diagnostic approach, biallelic HYDIN variants were detected in 17 families from 242 genetically confirmed PCD cases, comprising 7% of our PCD cohort. This represents the largest reported HYDIN cohort to date and highlights previous underdiagnosis of HYDIN-associated PCD. Moreover this provides further evidence for the utility of LR-NGS in diagnostic testing, particularly for regions of high genomic complexity.
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Affiliation(s)
- Andrew Fleming
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Miranda Galey
- Division of Genetic Medicine, Department of Pediatrics, University of Washington and Seattle Children's Hospital, Seattle, WA, USA
- Department of Laboratory Medicine and Pathology, University of Washington and Seattle Children's Hospital, Seattle, WA, 98105, USA
| | - Lizi Briggs
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Matthew Edwards
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Claire Hogg
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK
| | - Shibu John
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Sam Wilkinson
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Ellie Quinn
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Ranjit Rai
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Tom Burgoyne
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- Genetics and Genomic Medicine Department, University College London, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH, UK
| | - Andy Rogers
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Mitali P Patel
- Genetics and Genomic Medicine Department, University College London, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH, UK
- MRC Prion Unit at UCL, Institute of Prion Diseases, UCL, London, W1W 7FF, UK
| | - Paul Griffin
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Steven Muller
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Siobhan B Carr
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK
| | - Michael R Loebinger
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK
| | - Jane S Lucas
- Primary Ciliary Dyskinesia Centre, University Hospital Southampton NHS Foundation Trust, Southampton, SO16 6YD, UK
- Clinical and Experimental Sciences Academic Unit, University of Southampton Faculty of Medicine, Southampton, SO16 6YD, UK
| | - Anand Shah
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- MRC Centre of Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, London, W2 1PG, UK
| | - Ricardo Jose
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
| | - Hannah M Mitchison
- Genetics and Genomic Medicine Department, University College London, UCL Great Ormond Street Institute of Child Health, London, WC1N 1EH, UK
- MRC Prion Unit at UCL, Institute of Prion Diseases, UCL, London, W1W 7FF, UK
| | - Amelia Shoemark
- Primary Ciliary Dyskinesia Centre, Royal Brompton and Harefield Clinical Group, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee, DD1 9SY, UK
| | - Danny E Miller
- Division of Genetic Medicine, Department of Pediatrics, University of Washington and Seattle Children's Hospital, Seattle, WA, USA
- Department of Laboratory Medicine and Pathology, University of Washington and Seattle Children's Hospital, Seattle, WA, 98105, USA
- Brotman Baty Institute for Precision Medicine, University of Washington, Seattle, WA, 98195, USA
| | - Deborah J Morris-Rosendahl
- Clinical Genetics and Genomics Laboratory, Royal Brompton and Harefield Hospitals, Guy's and St. Thomas' NHS Foundation Trust, London, SW3 6NP, UK.
- National Heart and Lung Institute, Imperial College London, London, SW3 6LY, UK.
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11
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Goecke T, Ius F, Ruhparwar A, Martin U. Unlocking the Future: Pluripotent Stem Cell-Based Lung Repair. Cells 2024; 13:635. [PMID: 38607074 PMCID: PMC11012168 DOI: 10.3390/cells13070635] [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: 01/05/2024] [Revised: 03/18/2024] [Accepted: 03/26/2024] [Indexed: 04/13/2024] Open
Abstract
The human respiratory system is susceptible to a variety of diseases, ranging from chronic obstructive pulmonary disease (COPD) and pulmonary fibrosis to acute respiratory distress syndrome (ARDS). Today, lung diseases represent one of the major challenges to the health care sector and represent one of the leading causes of death worldwide. Current treatment options often focus on managing symptoms rather than addressing the underlying cause of the disease. The limitations of conventional therapies highlight the urgent clinical need for innovative solutions capable of repairing damaged lung tissue at a fundamental level. Pluripotent stem cell technologies have now reached clinical maturity and hold immense potential to revolutionize the landscape of lung repair and regenerative medicine. Meanwhile, human embryonic (HESCs) and human-induced pluripotent stem cells (hiPSCs) can be coaxed to differentiate into lung-specific cell types such as bronchial and alveolar epithelial cells, or pulmonary endothelial cells. This holds the promise of regenerating damaged lung tissue and restoring normal respiratory function. While methods for targeted genetic engineering of hPSCs and lung cell differentiation have substantially advanced, the required GMP-grade clinical-scale production technologies as well as the development of suitable preclinical animal models and cell application strategies are less advanced. This review provides an overview of current perspectives on PSC-based therapies for lung repair, explores key advances, and envisions future directions in this dynamic field.
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Affiliation(s)
- Tobias Goecke
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Lower Saxony Center for Biomedical Engineering, Implant Research and Development /Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (F.I.); (A.R.)
- REBIRTH-Research Center for Translational and Regenerative Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
- Biomedical Research in End-stage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Fabio Ius
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Lower Saxony Center for Biomedical Engineering, Implant Research and Development /Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (F.I.); (A.R.)
- REBIRTH-Research Center for Translational and Regenerative Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
- Biomedical Research in End-stage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Arjang Ruhparwar
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Lower Saxony Center for Biomedical Engineering, Implant Research and Development /Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (F.I.); (A.R.)
- REBIRTH-Research Center for Translational and Regenerative Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
- Biomedical Research in End-stage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Ulrich Martin
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Lower Saxony Center for Biomedical Engineering, Implant Research and Development /Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (F.I.); (A.R.)
- REBIRTH-Research Center for Translational and Regenerative Medicine, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
- Biomedical Research in End-stage and Obstructive Lung Disease (BREATH), Member of the German Center for Lung Research (DZL), Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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12
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Gut G, Bar-Yoseph R, Hanna M, Brandl N, Alisha I, Rizik S, Pollak M, Hakim F, Amirav I, Bentur L, Gur M. Pulmonary functions, nasal symptoms, and quality of life in patients with primary ciliary dyskinesia (PCD). Pediatr Pulmonol 2024; 59:688-694. [PMID: 38116904 DOI: 10.1002/ppul.26814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/24/2023] [Accepted: 12/03/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND Several factors may influence quality of life (QOL) for patients with primary ciliary dyskinesia (PCD). We aimed to evaluate the association between pulmonary functions, nasal symptoms and QOL in PCD patients. METHODS A prospective single center study. Patients performed spirometry, whole body plethysmography, forced oscillation technique (FOT), lung clearance index (LCI), 6-min walk test (6MWT), and filled two questionnaires: a specific PCD QOL questionnaire (PCD-QOL) and Sino-nasal outcome test (SNOT-22) questionnaire, assessing symptoms of chronic rhinosinusitis and health related QOL. RESULTS Twenty-seven patients (56% females), age 19.4 ± 10.5 years were included; their, FEV1 was 74.6 ± 22.7%, and RV/TLC was (157.3 ± 39.3% predicted). Health perception and lower respiratory symptoms domains of PCD-QOL had the lowest score (median [IQR]: 50 [33.3-64.6] and 57.1 [38.9-72.2], respectively). FOT parameters correlated with several PCD-QOL domains. R5 z-score (indicating total airway resistance) and AX z-score (indicating airway reactance) correlated negatively with physical domain (r = -0.598, p = .001, and r = -0.42, p = .03, respectively); R5 z-score also correlated negatively with hearing domain (r = -0.57, p = .002). R5-20 z-score (indicating small airway resistance) correlated negatively with role domain (r = -0.49, p = .03). SNOT-22 score correlated negatively with several PCD-QOL domains (lower respiratory symptoms r = -0.77, p < .001; physical r = -0.72, p < .001; upper respiratory symptoms r = -0.66, p < .001). No correlations were found between spirometry values, LCI, 6MWT, and PCD-QOL. CONCLUSIONS FOT suggested small airway dysfunction, and correlated negatively with several PCD-QOL domains. Nasal symptoms had strong negative correlations with PCD-QOL. Larger longitudinal studies will further elucidate factors affecting QOL in PCD.
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Affiliation(s)
- Guy Gut
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Ronen Bar-Yoseph
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Moneera Hanna
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Noa Brandl
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Irit Alisha
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Suha Rizik
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
| | - Mordechai Pollak
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Fahed Hakim
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Israel Amirav
- Pediatric Pulmonology Unit, Dana-Dwek Children's Hospital, Tel-Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Lea Bentur
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Michal Gur
- Pediatric Pulmonary Institute and CF Center, Rappaport Children's Hospital, Rambam Health Care Campus, Haifa, Israel
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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13
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Righini M, Mancini R, Busutti M, Buscaroli A. Autosomal Dominant Polycystic Kidney Disease: Extrarenal Involvement. Int J Mol Sci 2024; 25:2554. [PMID: 38473800 DOI: 10.3390/ijms25052554] [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: 01/03/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disorder, but kidneys are not the only organs involved in this systemic disorder. Individuals with the condition may display additional manifestations beyond the renal system, involving the liver, pancreas, and brain in the context of cystic manifestations, while involving the vascular system, gastrointestinal tract, bones, and cardiac valves in the context of non-cystic manifestations. Despite kidney involvement remaining the main feature of the disease, thanks to longer survival, early diagnosis, and better management of kidney-related problems, a new wave of complications must be faced by clinicians who treated patients with ADPKD. Involvement of the liver represents the most prevalent extrarenal manifestation and has growing importance in the symptom burden and quality of life. Vascular abnormalities are a key factor for patients' life expectancy and there is still debate whether to screen or not to screen all patients. Arterial hypertension is often the earliest onset symptom among ADPKD patients, leading to frequent cardiovascular complications. Although cardiac valvular abnormalities are a frequent complication, they rarely lead to relevant problems in the clinical history of polycystic patients. One of the newest relevant aspects concerns bone disorders that can exert a considerable influence on the clinical course of these patients. This review aims to provide the "state of the art" among the extrarenal manifestation of ADPKD.
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Affiliation(s)
- Matteo Righini
- Nephrology and Dialysis Unit, Santa Maria delle Croci Hospital, AUSL Romagna, 48121 Ravenna, Italy
- Nephrology, Dialysis and Transplantation Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40138 Bologna, Italy
| | - Raul Mancini
- Nephrology, Dialysis and Transplantation Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40138 Bologna, Italy
| | - Marco Busutti
- Nephrology, Dialysis and Transplantation Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40138 Bologna, Italy
| | - Andrea Buscaroli
- Nephrology and Dialysis Unit, Santa Maria delle Croci Hospital, AUSL Romagna, 48121 Ravenna, Italy
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14
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Reula A, Castillo-Corullón S, Armengot M, Herrera G, Escribano A, Dasí F. Redox Imbalance in Nasal Epithelial Cells of Primary Ciliary Dyskinesia Patients. Antioxidants (Basel) 2024; 13:190. [PMID: 38397788 PMCID: PMC10885940 DOI: 10.3390/antiox13020190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Background: Primary Ciliary Dyskinesia (PCD) represents a rare condition marked by an abnormal mobility pattern of cilia and flagella, resulting in impaired mucociliary clearance. This deficiency leads to recurrent infections and persistent inflammation of the airways. While previous studies have indicated heightened oxidative stress levels in the exhaled breath condensate of pediatric PCD patients, the assessment of oxidative stress within the affected respiratory tissue remains unexplored. Aims: To assess the oxidative status of human nasal epithelial cells (NECs) in PCD patients. Methods: Thirty-five PCD patients and thirty-five healthy control subjects were prospectively included in the study. Levels of reactive oxygen species (ROS), reactive nitrogen species (RNS), glutathione (GSH), intracellular Ca2+, plasma membrane potential, and oxidative damage in lipids and proteins were measured. In addition, apoptosis and mitochondrial function were analyzed by flow cytometry in NECs. Results: NECs from PCD patients showed reduced levels of apoptosis (p = 0.004), superoxide anion (O2-, p = 0.018), peroxynitrite (ONOO-, p = 0.007), nitric oxide (NO, p = 0.007), mitochondrial hydrogen peroxide (mtH2O2, p < 0.0001), and mitochondrial superoxide anion (mtO2-, p = 0.0004) and increased mitochondrial mass (p = 0.009) compared to those from healthy individuals. No significant differences were observed in oxidized proteins (p = 0.137) and the oxidized/reduced lipid ratio (p = 0.7973). The oxidative profile of NEC cells in PCD patients, according to their ciliary motility, recurrent otitis, recurrent pneumonia, atelectasis, bronchiectasis, and situs inversus, showed no statistically significant differences in the parameters studied. Conversely, patients with chronic rhinosinusitis exhibited lower levels of ONOO- than PCD patients without this condition, with no significant differences related to other symptoms. Conclusions: Our findings strongly suggest the presence of a redox imbalance, specifically leaning toward a reductive state, in PCD patients.
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Affiliation(s)
- Ana Reula
- Valencia University Clinical Hospital Research Foundation, Instituto de Investigación Sanitaria INCLIVA, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain; (A.R.); (S.C.-C.); (A.E.)
- Rare Respiratory Diseases Research Group, Department of Physiology, School of Medicine, University of Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
- Biomedical Sciences Department, CEU-Cardenal Herrera University, 12006 Castellón, Spain
- Molecular, Cellular, and Genomic Biomedicine Group, IIS La Fe, 46026 Valencia, Spain;
| | - Silvia Castillo-Corullón
- Valencia University Clinical Hospital Research Foundation, Instituto de Investigación Sanitaria INCLIVA, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain; (A.R.); (S.C.-C.); (A.E.)
- Paediatrics Unit, Department of Pediatrics, Obstetrics and Gynecology, Hospital Clínico Universitario Valencia, University of Valencia, 46022 Valencia, Spain
| | - Miguel Armengot
- Molecular, Cellular, and Genomic Biomedicine Group, IIS La Fe, 46026 Valencia, Spain;
- ENT Unit, Department of Surgery, School of Medicine, Hospital La Fe, University of Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
| | - Guadalupe Herrera
- Flow Cytometry Unit, Fundación Investigación Hospital Clínico Valencia, Instituto de Investigación Sanitaria INCLIVA, University of Valencia, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain;
| | - Amparo Escribano
- Valencia University Clinical Hospital Research Foundation, Instituto de Investigación Sanitaria INCLIVA, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain; (A.R.); (S.C.-C.); (A.E.)
- Paediatrics Unit, Department of Pediatrics, Obstetrics and Gynecology, Hospital Clínico Universitario Valencia, University of Valencia, 46022 Valencia, Spain
| | - Francisco Dasí
- Valencia University Clinical Hospital Research Foundation, Instituto de Investigación Sanitaria INCLIVA, Avda. Menéndez y Pelayo, 4, 46010 Valencia, Spain; (A.R.); (S.C.-C.); (A.E.)
- Rare Respiratory Diseases Research Group, Department of Physiology, School of Medicine, University of Valencia, Avda. Blasco Ibáñez, 17, 46010 Valencia, Spain
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15
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Rao VG, Shendge AA, D'Gama PP, Martis EAF, Mehta S, Coutinho EC, D'Souza JS. A-kinase anchoring proteins are enriched in the central pair microtubules of motile cilia in Chlamydomonas reinhardtii. FEBS Lett 2024; 598:457-476. [PMID: 38140814 DOI: 10.1002/1873-3468.14791] [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: 03/13/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 12/24/2023]
Abstract
Cilia are microtubule-based sensory organelles present in a number of eukaryotic cells. Mutations in the genes encoding ciliary proteins cause ciliopathies in humans. A-kinase anchoring proteins (AKAPs) tether ciliary signaling proteins such as protein kinase A (PKA). The dimerization and docking domain (D/D) on the RIIα subunit of PKA interacts with AKAPs. Here, we show that AKAP240 from the central-pair microtubules of Chlamydomonas reinhardtii cilia uses two C-terminal amphipathic helices to bind to its partner FAP174, an RIIα-like protein with a D/D domain at the N-terminus. Co-immunoprecipitation using anti-FAP174 antibody with an enriched central-pair microtubule fraction isolated seven interactors whose mass spectrometry analysis revealed proteins from the C2a (FAP65, FAP70, and FAP147) and C1b (CPC1, HSP70A, and FAP42) microtubule projections and FAP75, a protein whose sub-ciliary localization is unknown. Using RII D/D and FAP174 as baits, we identified two additional AKAPs (CPC1 and FAP297) in the central-pair microtubules.
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Affiliation(s)
- Venkatramanan G Rao
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Santacruz (E), Mumbai, India
| | - Amruta A Shendge
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Santacruz (E), Mumbai, India
| | - Percival P D'Gama
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Santacruz (E), Mumbai, India
| | - Elvis A F Martis
- Molecular Simulations Group, Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Santacruz (E), Mumbai, India
| | - Shraddha Mehta
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Santacruz (E), Mumbai, India
| | - Evans C Coutinho
- Molecular Simulations Group, Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Santacruz (E), Mumbai, India
- St John Institute of Pharmacy and Research, Palghar (E), Maharashtra, India
| | - Jacinta S D'Souza
- School of Biological Sciences, UM-DAE Centre for Excellence in Basic Sciences, Kalina Campus, Santacruz (E), Mumbai, India
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16
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Dore R, Nizza IE, Mitchison HM, Lewis C. 'Don't let it hold you back' - The experience of transition to adulthood in young people with primary ciliary dyskinesia: An interpretative phenomenological analysis. J Health Psychol 2024:13591053231223912. [PMID: 38282372 DOI: 10.1177/13591053231223912] [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: 01/30/2024] Open
Abstract
Primary ciliary dyskinesia (PCD) is a rare, chronic genetic condition with variable features arising from motile cilia dysfunction, including recurrent respiratory infections, sinonasal disease, reduced hearing, infertility and situs inversus. The aim of the study was to understand the experiences of young people with PCD as they transition into adulthood and adult healthcare services. An interpretative phenomenological analytical method was applied. Semi-structured interviews were conducted with three participants aged 18-24 years. Four interconnected group experiential themes were identified: (1) reconceptualising a stigmatised identity, (2) sharing the journey to independence, (3) entering adulthood with newfound autonomy, (4) anticipating an uncertain future. Overall, we found that transition for young people with PCD presents as a complex period marked by identity-formation, creating systems of support and becoming an autonomous adult. Facilitation of personalised and integrated approaches to care should be prioritised. Our findings are important to help health professionals provide appropriate, anticipatory support.
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Affiliation(s)
- Rhys Dore
- Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Isabella E Nizza
- Department of Psychological Sciences, Birkbeck University of London, London, UK
| | - Hannah M Mitchison
- Genetics & Genomic Medicine, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Celine Lewis
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health, London, UK
- North Thames Genomic Laboratory Hub, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
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17
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Keicho N, Hijikata M, Miyabayashi A, Wakabayashi K, Yamada H, Ito M, Morimoto K. Impact of primary ciliary dyskinesia: Beyond sinobronchial syndrome in Japan. Respir Investig 2024; 62:179-186. [PMID: 38154292 DOI: 10.1016/j.resinv.2023.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/06/2023] [Accepted: 12/16/2023] [Indexed: 12/30/2023]
Abstract
Primary ciliary dyskinesia (PCD) is a rare genetic disorder characterized by impaired motile cilia function, particularly in the upper and lower airways. To date, more than 50 causative genes related to the movement, development, and maintenance of cilia have been identified. PCD mostly follows an autosomal recessive inheritance pattern, in which PCD symptoms manifest only in the presence of pathogenic variants in both alleles. Several genes causing PCD have been recently identified that neither lead to situs inversus nor cause definitive abnormalities in ciliary ultrastructure. Importantly, the distribution of disease-causing genes and pathogenic variants varies depending on ethnicity. In Japan, homozygosity for a ∼27.7-kb deletion of DRC1 is estimated to be the most common cause of PCD, presumably as a founder mutation. The clinical picture of PCD is similar to that of sinobronchial syndrome, thus making its differentiation from diffuse panbronchiolitis and other related disorders difficult. Given the diagnostic challenges, many cases remain undiagnosed or misdiagnosed, particularly in adults. While no fundamental cure is currently available, lifelong medical subsidies are provided in Japan, and proper respiratory management, along with continued prevention and treatment of infections, is believed to mitigate the decline in respiratory function. Timely action will be necessary when specific treatments for PCD become available in the future. This narrative review focuses on variations in the disease status of PCD in a non-Western country.
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Affiliation(s)
- Naoto Keicho
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan.
| | - Minako Hijikata
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Akiko Miyabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Keiko Wakabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Hiroyuki Yamada
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Masashi Ito
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Japan Anti-Tuberculosis Association, Tokyo, Japan
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18
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Messmore M, Kassab AJ, Prather RO, Arceo DAC, DeCampli W. Cilia and Nodal Flow in Asymmetry: An Engineering Perspective. Crit Rev Biomed Eng 2024; 52:63-82. [PMID: 38523441 DOI: 10.1615/critrevbiomedeng.2024051678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Over the past several years, cilia in the primitive node have become recognized more and more for their contribution to development, and more specifically, for their role in axis determination. Although many of the mechanisms behind their influence remain undocumented, it is known that their presence and motion in the primitive node of developing embryos is the determinant of the left-right axis. Studies on cilial mechanics and nodal fluid dynamics have provided clues as to how this asymmetry mechanism works, and more importantly, have shown that direct manipulation of the flow field in the node can directly influence physiology. Although relatively uncommon, cilial disorders have been shown to have a variety of impacts on individuals from chronic respiratory infections to infertility, as well as situs inversus which is linked to congenital heart disease. After first providing background information pertinent to understanding nodal flow and information on why this discussion is important, this paper aims to give a review of the history of nodal cilia investigations, an overview of cilia mechanics and nodal flow dynamics, as well as a review of research studies current and past that sought to understand the mechanisms behind nodal cilia's involvement in symmetry-breaking pathways through a biomedical engineering perspective. This discussion has the additional intention to compile interdisciplinary knowledge on asymmetry and development such that it may encourage more collaborative efforts between the sciences on this topic, as well as provide insight on potential paths forward in the field.
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Affiliation(s)
| | - Alain J Kassab
- Department of Mechanical and Aerospace Engineering, University of Central Florida, 4000 Central Florida Blvd, Orlando, Florida, USA
| | - Ray O Prather
- Embry-Riddle Aeronautical University, Daytona Beach, FL, 32114, USA; University of Central Florida, Orlando, FL 32816, USA; The Heart Center at Orlando Health Arnold Palmer Hospital for Children, Orlando, FL 32806, USA
| | - David A Castillo Arceo
- College of Engineering and Computer Science (CECS), University of Central Florida, Orlando, FL, USA
| | - William DeCampli
- University of Central Florida, Orlando, FL, 32816, USA; The Heart Center, Arnold Palmer Hospital for Children, Orlando, FL, 32806, USA
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19
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Ren Z, Mao X, Wang S, Wang X. Cilia-related diseases. J Cell Mol Med 2023; 27:3974-3979. [PMID: 37830491 PMCID: PMC10746950 DOI: 10.1111/jcmm.17990] [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: 06/12/2023] [Revised: 09/14/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
More and more attention is paid to diseases such as internal transfer and brain malformation which are caused by the abnormal morphogenesis of cilia. These cilia-related diseases are divided into two categories: ciliopathy resulting from defects of primary cilia and primary ciliary dyskinesia (PCD) caused by functional dysregulation of motile cilia. Cilia are widely distributed, and their related diseases can cover many human organs and tissues. Recent studies prove that primary cilia play a key role in maintaining homeostasis in the cardiovascular system. However, molecular mechanisms of cilia-related diseases remain elusive. Here, we reviewed recent research progresses on characteristics, molecular mechanisms and treatment methods of ciliopathy and PCD. Our review is beneficial to the further research on the pathogenesis and treatment strategies of cilia-related diseases.
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Affiliation(s)
- Zhanhong Ren
- Hubei Key Laboratory of Diabetes and AngiopathyMedicine Research Institute, Xianning Medical College, Hubei University of Science and TechnologyXianningP. R. China
| | - Xiaoxiao Mao
- Hubei Key Laboratory of Diabetes and AngiopathyMedicine Research Institute, Xianning Medical College, Hubei University of Science and TechnologyXianningP. R. China
- School of Basic Medical SciencesXianning Medical College, Hubei University of Science and TechnologyXianningP. R. China
| | - Siqi Wang
- Hubei Key Laboratory of Diabetes and AngiopathyMedicine Research Institute, Xianning Medical College, Hubei University of Science and TechnologyXianningP. R. China
| | - Xin Wang
- School of Mathematics and StatisticsHubei University of Science and TechnologyXianningP. R. China
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20
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Zhao X, Ge H, Xu W, Cheng C, Zhou W, Xu Y, Fan J, Liu Y, Tian X, Xu KF, Zhang X. Lack of CFAP54 causes primary ciliary dyskinesia in a mouse model and human patients. Front Med 2023; 17:1236-1249. [PMID: 37725231 DOI: 10.1007/s11684-023-0997-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 03/06/2023] [Indexed: 09/21/2023]
Abstract
Primary ciliary dyskinesia (PCD) is a highly heterogeneous recessive inherited disorder. FAP54, the homolog of CFAP54 in Chlamydomonas reinhardtii, was previously demonstrated as the C1d projection of the central microtubule apparatus of flagella. A Cfap54 knockout mouse model was then reported to have PCD-relevant phenotypes. Through whole-exome sequencing, compound heterozygous variants c.2649_2657delinC (p. E883Dfs*47) and c.7312_7313insCGCAGGCTGAATTCTTGG (p. T2438delinsTQAEFLA) in a new suspected PCD-relevant gene, CFAP54, were identified in an individual with PCD. Two missense variants, c.4112A>C (p. E1371A) and c.6559C>T (p. P2187S), in CFAP54 were detected in another unrelated patient. In this study, a minigene assay was conducted on the frameshift mutation showing a reduction in mRNA expression. In addition, a CFAP54 in-frame variant knock-in mouse model was established, which recapitulated the typical symptoms of PCD, including hydrocephalus, infertility, and mucus accumulation in nasal sinuses. Correspondingly, two missense variants were deleterious, with a dramatic reduction in mRNA abundance from bronchial tissue and sperm. The identification of PCD-causing variants of CFAP54 in two unrelated patients with PCD for the first time provides strong supportive evidence that CFAP54 is a new PCD-causing gene. This study further helps expand the disease-associated gene spectrum and improve genetic testing for PCD diagnosis in the future.
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Affiliation(s)
- Xinyue Zhao
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
| | - Haijun Ge
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
| | - Wenshuai Xu
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
| | - Chongsheng Cheng
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Wangji Zhou
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yan Xu
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Junping Fan
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Yaping Liu
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China.
| | - Xinlun Tian
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China.
| | - Kai-Feng Xu
- Department of Pulmonary and Critical Care Medicine, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, China
| | - Xue Zhang
- McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
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21
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Wesselman HM, Arceri L, Nguyen TK, Lara CM, Wingert RA. Genetic mechanisms of multiciliated cell development: from fate choice to differentiation in zebrafish and other models. FEBS J 2023. [PMID: 37997009 DOI: 10.1111/febs.17012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 10/17/2023] [Accepted: 11/21/2023] [Indexed: 11/25/2023]
Abstract
Multiciliated cells (MCCS) form bundles of cilia and their activities are essential for the proper development and physiology of many organ systems. Not surprisingly, defects in MCCs have profound consequences and are associated with numerous disease states. Here, we discuss the current understanding of MCC formation, with a special focus on the genetic and molecular mechanisms of MCC fate choice and differentiation. Furthermore, we cast a spotlight on the use of zebrafish to study MCC ontogeny and several recent advances made in understanding MCCs using this vertebrate model to delineate mechanisms of MCC emergence in the developing kidney.
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Affiliation(s)
| | - Liana Arceri
- Department of Biological Sciences, University of Notre Dame, IN, USA
| | - Thanh Khoa Nguyen
- Department of Biological Sciences, University of Notre Dame, IN, USA
| | - Caroline M Lara
- Department of Biological Sciences, University of Notre Dame, IN, USA
| | - Rebecca A Wingert
- Department of Biological Sciences, University of Notre Dame, IN, USA
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22
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Olivença DV, Davis JD, Kumbale CM, Zhao CY, Brown SP, McCarty NA, Voit EO. Mathematical models of cystic fibrosis as a systemic disease. WIREs Mech Dis 2023; 15:e1625. [PMID: 37544654 PMCID: PMC10843793 DOI: 10.1002/wsbm.1625] [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: 12/16/2022] [Revised: 06/22/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023]
Abstract
Cystic fibrosis (CF) is widely known as a disease of the lung, even though it is in truth a systemic disease, whose symptoms typically manifest in gastrointestinal dysfunction first. CF ultimately impairs not only the pancreas and intestine but also the lungs, gonads, liver, kidneys, bones, and the cardiovascular system. It is caused by one of several mutations in the gene of the epithelial ion channel protein CFTR. Intense research and improved antimicrobial treatments during the past eight decades have steadily increased the predicted life expectancy of a person with CF (pwCF) from a few weeks to over 50 years. Moreover, several drugs ameliorating the sequelae of the disease have become available in recent years, and notable treatments of the root cause of the disease have recently generated substantial improvements in health for some but not all pwCF. Yet, numerous fundamental questions remain unanswered. Complicating CF, for instance in the lung, is the fact that the associated insufficient chloride secretion typically perturbs the electrochemical balance across epithelia and, in the airways, leads to the accumulation of thick, viscous mucus and mucus plaques that cannot be cleared effectively and provide a rich breeding ground for a spectrum of bacterial and fungal communities. The subsequent infections often become chronic and respond poorly to antibiotic treatments, with outcomes sometimes only weakly correlated with the drug susceptibility of the target pathogen. Furthermore, in contrast to rapidly resolved acute infections with a single target pathogen, chronic infections commonly involve multi-species bacterial communities, called "infection microbiomes," that develop their own ecological and evolutionary dynamics. It is presently impossible to devise mathematical models of CF in its entirety, but it is feasible to design models for many of the distinct drivers of the disease. Building upon these growing yet isolated modeling efforts, we discuss in the following the feasibility of a multi-scale modeling framework, known as template-and-anchor modeling, that allows the gradual integration of refined sub-models with different granularity. The article first reviews the most important biomedical aspects of CF and subsequently describes mathematical modeling approaches that already exist or have the potential to deepen our understanding of the multitude aspects of the disease and their interrelationships. The conceptual ideas behind the approaches proposed here do not only pertain to CF but are translatable to other systemic diseases. This article is categorized under: Congenital Diseases > Computational Models.
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Affiliation(s)
- Daniel V. Olivença
- Center for Engineering Innovation, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, USA
| | - Jacob D. Davis
- Department of Biomedical Engineering, Georgia Tech and Emory University, Atlanta, Georgia
| | - Carla M. Kumbale
- Department of Biomedical Engineering, Georgia Tech and Emory University, Atlanta, Georgia
| | - Conan Y. Zhao
- Mayo Clinic Alix School of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Samuel P. Brown
- Department of Biological Sciences, Georgia Tech and Emory University, Atlanta, Georgia
| | - Nael A. McCarty
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia
| | - Eberhard O. Voit
- Department of Biomedical Engineering, Georgia Tech and Emory University, Atlanta, Georgia
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23
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Lu D, Yang W, Zhang R, Li Y, Cheng T, Liao Y, Chen L, Liu H. Clinical Characteristics and Immune Responses in Children with Primary Ciliary Dyskinesia during Pneumonia Episodes: A Case-Control Study. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1727. [PMID: 38002818 PMCID: PMC10670724 DOI: 10.3390/children10111727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/18/2023] [Accepted: 10/20/2023] [Indexed: 11/26/2023]
Abstract
OBJECTIVE This study explored the clinical features and immune responses of children with primary ciliary dyskinesia (PCD) during pneumonia episodes. METHODS The 61 children with PCD who were admitted to hospital because of pneumonia were retrospectively enrolled into this study between April 2017 and August 2022. A total of 61 children with pneumonia but without chronic diseases were enrolled as the control group. The clinical characteristics, levels of inflammatory indicators, pathogens, and imaging features of the lungs were compared between the two groups. RESULTS The PCD group had higher levels of lymphocytes (42.80% versus 36.00%, p = 0.029) and eosinophils (2.40% versus 1.25%, p = 0.020), but lower neutrophil counts (3.99 versus 5.75 × 109/L, p = 0.011), percentages of neutrophils (46.39% versus 54.24%, p = 0.014), CRP (0.40 versus 4.20 mg/L, p < 0.001) and fibrinogen (257.50 versus 338.00 mg/dL, p = 0.010) levels. Children with PCD and children without chronic diseases were both most commonly infected with Mycoplasma pneumoniae (24.6% versus 51.9%). Children with PCD had significantly more common imaging features, including mucous plugging (p = 0.042), emphysema (p = 0.007), bronchiectasis (p < 0.001), mosaic attenuation (p = 0.012), interstitial inflammation (p = 0.015), and sinusitis (p < 0.001). CONCLUSION PCD is linked to immune system impairment, which significantly contributes to our understanding of the pathophysiology of this entity.
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Affiliation(s)
- Danli Lu
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610000, China
- The Joint Laboratory for Lung Development and Related Diseases of West China Second University Hospital, School of Life Sciences of Fudan University, West China Institute of Women and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Sichuan Birth Defects Clinical Research Center, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Wenhao Yang
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610000, China
- The Joint Laboratory for Lung Development and Related Diseases of West China Second University Hospital, School of Life Sciences of Fudan University, West China Institute of Women and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Sichuan Birth Defects Clinical Research Center, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Rui Zhang
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Yan Li
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Tianyu Cheng
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610000, China
- The Joint Laboratory for Lung Development and Related Diseases of West China Second University Hospital, School of Life Sciences of Fudan University, West China Institute of Women and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Sichuan Birth Defects Clinical Research Center, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Yue Liao
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Lina Chen
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610000, China
- The Joint Laboratory for Lung Development and Related Diseases of West China Second University Hospital, School of Life Sciences of Fudan University, West China Institute of Women and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Sichuan Birth Defects Clinical Research Center, West China Second University Hospital, Sichuan University, Chengdu 610000, China
| | - Hanmin Liu
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu 610000, China
- The Joint Laboratory for Lung Development and Related Diseases of West China Second University Hospital, School of Life Sciences of Fudan University, West China Institute of Women and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu 610000, China
- Sichuan Birth Defects Clinical Research Center, West China Second University Hospital, Sichuan University, Chengdu 610000, China
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24
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Petrarca L, De Luca A, Nenna R, Hadchouel A, Mazza T, Conti MG, Masuelli L, Midulla F, Guida V. Early genetic analysis by next-generation sequencing improves diagnosis of primary ciliary dyskinesia. Pediatr Pulmonol 2023; 58:2950-2953. [PMID: 37477497 DOI: 10.1002/ppul.26604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 06/08/2023] [Accepted: 07/06/2023] [Indexed: 07/22/2023]
Affiliation(s)
- Laura Petrarca
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Alessandro De Luca
- Medical Genetics Division, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Raffaella Nenna
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Alice Hadchouel
- AP-HP, Service de Pneumologie Pédiatrique, Hôpital Universitaire Necker-Enfants Malades, Centre de Référence pour les Maladies Respiratoires Rares de l'Enfant, Paris, France
- Faculté de Médecine, Université de Paris Cité, Paris, France
- INSERM U1151, Institut Necker Enfants Malades-INEM, Paris, France
| | - Tommaso Mazza
- Laboratory of Bioinformatics, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Maria Giulia Conti
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Laura Masuelli
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Fabio Midulla
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Valentina Guida
- Medical Genetics Division, Fondazione IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
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25
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Castillo M, Freire E, Romero VI. Primary ciliary dyskinesia diagnosis and management and its implications in America: a mini review. Front Pediatr 2023; 11:1091173. [PMID: 37744431 PMCID: PMC10514901 DOI: 10.3389/fped.2023.1091173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 08/29/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction Primary ciliary dyskinesia (PCD) is a rare genetic disorder that can result in significant morbidity and mortality if left untreated. Clinical manifestations of PCD include recurrent respiratory infections, laterality defects, and infertility, all of which arise from impaired or absent ciliary motility. Diagnostic approaches for PCD may include high-speed video microscopy, measurement of nasal nitric oxide levels, and genetic testing; however, no single definitive diagnostic test exists. The present study aims to highlight the lack of standardized diagnostic and treatment guidelines for PCD in Latin America (Central and South America, and the Caribbean). To this effect, we compared North American and European recommendations for the diagnosis and management of PCD and found that certain diagnostic tools and treatment options mentioned in these guidelines are not readily accessible in many Latin American countries. Methods & Results This review gathers disease information in North America, Europe, and Latin America organizing guideline results into tables for clarity and potential interventions. Management information for Latin America is inferred from case reports, as most findings are from North American recommendations and studies on PubMed, Google Scholar, and Scopus. Treatment and management information is based on North American and European standards.Among 5,774 publications reviewed, only 15 articles met the inclusion criteria (focused on PCD management, peer-reviewed, and located in America). No clinical guideline for PCD in Latin America was found, but recommendations on respiratory management from Colombia and Chile were discovered. The lack of guidelines in Latin America may originate from limited resources and research on the disease in those countries. Discussion PCD lacks documentation, research, and recommendations regarding its prevalence in Latin America, likely due to unfavorable economic conditions. This disadvantage results in limited access to diagnostic tests available in North America and Europe. The PICADAR score, discussed in this review, can be used in low-income nations as a screening tool for the disorder.
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Affiliation(s)
| | | | - V. I. Romero
- School of Medicine, Universidad San Francisco de Quito, Quito, Ecuador
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26
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Marthin JK, Nielsen KG, Mortensen J. Quantitative 99mTc-albumin colloid nasal mucociliary clearance as an outcome in primary ciliary dyskinesia. ERJ Open Res 2023; 9:00345-2023. [PMID: 37701364 PMCID: PMC10493710 DOI: 10.1183/23120541.00345-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 06/05/2023] [Indexed: 09/14/2023] Open
Abstract
Background Primary ciliary dyskinesia (PCD) is an inherited disorder in which dyskinetic cilia cause impaired mucociliary clearance of upper and lower airways. Airway ciliary movement can be indirectly tested in vivo after administration of a radiolabelled tracer to the lower airways for assessment of pulmonary mucociliary clearance or to the nose for assessing nasal mucociliary clearance (NMC). With this study, we investigated NMC as a quantifiable study outcome parameter in patients with PCD. Material and methods This single centre proof-of-concept study on NMC velocity investigated patients with PCD across different genotypes and nasal nitric oxide (nasal NO) levels. Healthy controls were used for comparison. NMC was determined as velocity in mm·min-1 of a nasally applied 99mTc-albumin colloid tracer. Using a gamma camera, repeated dynamic series of images each lasting 30 s were acquired during a 10-minute period and digitally stored. Results NMC velocity was investigated in seven patients with PCD (aged 9-31 years) and five adult healthy controls. Mean NMC velocity in healthy controls (8.5 mm·min-1) was significantly higher compared with people with PCD (0.00 mm·min-1, p<0.0001). NMC was completely absent in all included patients with PCD across different PCD genotypes and regardless of nasal NO values. The success rate of the test was 100% in both groups. Conclusion NMC velocity discriminated highly significantly between patients with PCD and healthy controls. We suggest here a fast and feasible set up for NMC measurements that is easily applicable for any clinical trial involving PCD medication aimed for the nasal compartment, a step before or parallel to conducting clinical trials investigating whole-lung ciliary function in PCD.
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Affiliation(s)
- June K. Marthin
- Danish PCD Centre, Paediatric Pulmonary Service, ERN Accredited, Department of Paediatric and Adolescent Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Kim G. Nielsen
- Danish PCD Centre, Paediatric Pulmonary Service, ERN Accredited, Department of Paediatric and Adolescent Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Shared senior authorship
| | - Jann Mortensen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Medicine, The National Hospital, Torshavn, The Faroe Islands
- Shared senior authorship
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27
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Schmidt G, Rienas G, Müller S, Edinger F, Sander M, Koch C, Henrich M. A 20:1 synergetic mixture of cafedrine/theodrenaline accelerates particle transport velocity in murine tracheal epithelium via IP 3 receptor-associated calcium release. Front Pharmacol 2023; 14:1155930. [PMID: 37654612 PMCID: PMC10466409 DOI: 10.3389/fphar.2023.1155930] [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: 02/01/2023] [Accepted: 07/26/2023] [Indexed: 09/02/2023] Open
Abstract
Background: Mucociliary clearance is a pivotal physiological mechanism that protects the lung by ridding the lower airways of pollution and colonization by pathogens, thereby preventing infections. The fixed 20:1 combination of cafedrine and theodrenaline has been used to treat perioperative hypotension or hypotensive states due to emergency situations since the 1960s. Because mucociliary clearance is impaired during mechanical ventilation and critical illness, the present study aimed to evaluate the influence of cafedrine/theodrenaline on mucociliary clearance. Material and Methods: The particle transport velocity (PTV) of murine trachea preparations was measured as a surrogate for mucociliary clearance under the influence of cafedrine/theodrenaline, cafedrine alone, and theodrenaline alone. Inhibitory substances were applied to elucidate relevant signal transduction cascades. Results: All three applications of the combination of cafedrine/theodrenaline, cafedrine alone, or theodrenaline alone induced a sharp increase in PTV in a concentration-dependent manner with median effective concentrations of 0.46 µM (consisting of 9.6 µM cafedrine and 0.46 µM theodrenaline), 408 and 4 μM, respectively. The signal transduction cascades were similar for the effects of both cafedrine and theodrenaline at the murine respiratory epithelium. While PTV remained at its baseline value after non-selective inhibition of β-adrenergic receptors and selective inhibition of β1 receptors, cafedrine/theodrenaline, cafedrine alone, or theodrenaline alone increased PTV despite the inhibition of the protein kinase A. However, IP3 receptor activation was found to be the pivotal mechanism leading to the increase in murine PTV, which was abolished when IP3 receptors were inhibited. Depleting intracellular calcium stores with caffeine confirmed calcium as another crucial messenger altering the PTV after the application of cafedrine/theodrenaline. Discussion: Cafedrine/theodrenaline, cafedrine alone, and theodrenaline alone exert their effects via IP3 receptor-associated calcium release that is ultimately triggered by β1-adrenergic receptor stimulation. Synergistic effects at the β1-adrenergic receptor are highly relevant to alter the PTV of the respiratory epithelium at clinically relevant concentrations. Further investigations are needed to assess the value of cafedrine/theodrenaline-mediated alterations in mucociliary function in clinical practice.
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Affiliation(s)
- Götz Schmidt
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Gerrit Rienas
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Sabrina Müller
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Fabian Edinger
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Michael Sander
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Christian Koch
- Department of Anesthesiology, Operative Intensive Care Medicine and Pain Therapy, Justus Liebig University Giessen, Giessen, Germany
| | - Michael Henrich
- Department of Anesthesiology, Intensive Care Medicine, Emergency Medicine, Vidia St. Vincentius-Clinic Karlsruhe gAG, Karlsruhe, Germany
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28
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Petalas K, Goudakos J, Konstantinou GN. Targeting Epithelium Dysfunction and Impaired Nasal Biofilms to Treat Immunological, Functional, and Structural Abnormalities of Chronic Rhinosinusitis. Int J Mol Sci 2023; 24:12379. [PMID: 37569753 PMCID: PMC10419026 DOI: 10.3390/ijms241512379] [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: 05/29/2023] [Revised: 07/25/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023] Open
Abstract
Chronic rhinosinusitis (CRS) with (CRSwNP) or without (CRSsNP) nasal polyps is a prevalent and heterogeneous disorder existing as a spectrum of clinical conditions with complex underlying pathomechanisms. CRS comprises a broad syndrome characterized by multiple immunological features involving complex interactions between the genes, the microbiome, host- and microbiota-derived exosomes, the epithelial barrier, and environmental and micromilieu exposures. The main pathophysiological feature is an epithelial barrier disruption, accompanied by microbiome alterations and unpredictable and multifactorial immunologic overreactions. Extrinsic pathogens and irritants interact with multiple epithelial receptors, which show distinct expression patterns, activate numerous signaling pathways, and lead to diverse antipathogen responses. CRSsNP is mainly characterized by fibrosis and mild inflammation and is often associated with Th1 or Th17 immunological profiles. CRSwNP appears to be associated with moderate or severe type 2 (T2) or Th2 eosinophilic inflammation. The diagnosis is based on clinical, endoscopic, and imaging findings. Possible CRS biomarkers from the peripheral blood, nasal secretions, tissue biopsies, and nasally exhaled air are studied to subgroup different CRS endotypes. The primary goal of CRS management is to maintain clinical control by nasal douching with isotonic or hypertonic saline solutions, administration of nasal and systemic steroids, antibiotics, biologic agents, or, in persistent and more severe cases, appropriate surgical procedures.
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Affiliation(s)
| | - John Goudakos
- Department of Otorhinolaryngology-Head and Neck Surgery, 424 General Military Training Hospital, 56429 Thessaloniki, Greece;
| | - George N. Konstantinou
- Department of Allergy and Clinical Immunology, 424 General Military Training Hospital, Dorilaiou 10, Kalamaria, 55133 Thessaloniki, Greece
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29
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Sheridan J, Grata A, Suva EE, Bresteau E, Mitchell LR, Hassan O, Mitchell B. Novel centriolar defects underlie a primary ciliary dyskinesia phenotype in an adenylate kinase 7 deficient ciliated epithelium. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.25.550535. [PMID: 37546962 PMCID: PMC10402086 DOI: 10.1101/2023.07.25.550535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The skin of Xenopus embryos contains numerous multiciliated cells (MCCs), which collectively generate a directed fluid flow across the epithelial surface essential for distributing the overlaying mucous. MCCs develop into highly specialized cells to generate this flow, containing approximately 150 evenly spaced centrioles that give rise to motile cilia. MCC-driven fluid flow can be impaired when ciliary dysfunction occurs, resulting in primary ciliary dyskinesia (PCD) in humans. Mutations in a large number of genes (~50) have been found to be causative to PCD. Recently, studies have linked low levels of Adenylate Kinase 7 (AK7) gene expression to patients with PCD; however, the mechanism for this link remains unclear. Additionally, AK7 mutations have been linked to multiple PCD patients. Adenylate kinases modulate ATP production and consumption, with AK7 explicitly associated with motile cilia. Here we reproduce an AK7 PCD-like phenotype in Xenopus and describe the cellular consequences that occur with manipulation of AK7 levels. We show that AK7 localizes throughout the cilia in a DPY30 domain-dependent manner, suggesting a ciliary function. Additionally, we find that AK7 overexpression increases centriole number, suggesting a role in regulating centriole biogenesis. We find that in AK7-depleted embryos, cilia number, length, and beat frequency are all reduced, which in turn, significantly decreases the tissue-wide mucociliary flow. Additionally, we find a decrease in centriole number and an increase in sub-apical centrioles, implying that AK7 influences both centriole biogenesis and docking, which we propose underlie its defect in ciliogenesis. We propose that AK7 plays a role in PCD by impacting centriole biogenesis and apical docking, ultimately leading to ciliogenesis defects that impair mucociliary clearance.
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Affiliation(s)
- Jennifer Sheridan
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Aline Grata
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Eve E. Suva
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Enzo Bresteau
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Linus R. Mitchell
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Osama Hassan
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
| | - Brian Mitchell
- Northwestern University, Feinberg School of Medicine, Department of Cell and Developmental Biology
- Northwestern University, Lurie Cancer Center
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30
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Brocal-Ruiz R, Esteve-Serrano A, Mora-Martínez C, Franco-Rivadeneira ML, Swoboda P, Tena JJ, Vilar M, Flames N. Forkhead transcription factor FKH-8 cooperates with RFX in the direct regulation of sensory cilia in Caenorhabditis elegans. eLife 2023; 12:e89702. [PMID: 37449480 PMCID: PMC10393296 DOI: 10.7554/elife.89702] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
Cilia, either motile or non-motile (a.k.a primary or sensory), are complex evolutionarily conserved eukaryotic structures composed of hundreds of proteins required for their assembly, structure and function that are collectively known as the ciliome. Ciliome gene mutations underlie a group of pleiotropic genetic diseases known as ciliopathies. Proper cilium function requires the tight coregulation of ciliome gene transcription, which is only fragmentarily understood. RFX transcription factors (TF) have an evolutionarily conserved role in the direct activation of ciliome genes both in motile and non-motile cilia cell-types. In vertebrates, FoxJ1 and FoxN4 Forkhead (FKH) TFs work with RFX in the direct activation of ciliome genes, exclusively in motile cilia cell-types. No additional TFs have been described to act together with RFX in primary cilia cell-types in any organism. Here we describe FKH-8, a FKH TF, as a direct regulator of the sensory ciliome genes in Caenorhabditis elegans. FKH-8 is expressed in all ciliated neurons in C. elegans, binds the regulatory regions of ciliome genes, regulates ciliome gene expression, cilium morphology and a wide range of behaviors mediated by sensory ciliated neurons. FKH-8 and DAF-19 (C. elegans RFX) physically interact and synergistically regulate ciliome gene expression. C. elegans FKH-8 function can be replaced by mouse FOXJ1 and FOXN4 but not by other members of other mouse FKH subfamilies. In conclusion, RFX and FKH TF families act jointly as direct regulators of ciliome genes also in sensory ciliated cell types suggesting that this regulatory logic could be an ancient trait predating functional cilia sub-specialization.
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Affiliation(s)
- Rebeca Brocal-Ruiz
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia IBV-CSICValenciaSpain
| | - Ainara Esteve-Serrano
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia IBV-CSICValenciaSpain
| | - Carlos Mora-Martínez
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia IBV-CSICValenciaSpain
| | | | - Peter Swoboda
- Department of Biosciences and Nutrition. Karolinska Institute. Campus FlemingsbergStockholmSweden
| | - Juan J Tena
- Centro Andaluz de Biología del Desarrollo (CABD), Consejo Superior de Investigaciones Científicas/Universidad Pablo de OlavideSevilleSpain
| | - Marçal Vilar
- Molecular Basis of Neurodegeneration Unit, Instituto de Biomedicina de Valencia IBV-CSICValenciaSpain
| | - Nuria Flames
- Developmental Neurobiology Unit, Instituto de Biomedicina de Valencia IBV-CSICValenciaSpain
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Kim DY, Sub YJ, Kim HY, Cho KJ, Choi WI, Choi YJ, Lee MG, Hildebrandt F, Gee HY. LRRC6 regulates biogenesis of motile cilia by aiding FOXJ1 translocation into the nucleus. Cell Commun Signal 2023; 21:142. [PMID: 37328841 PMCID: PMC10273532 DOI: 10.1186/s12964-023-01135-y] [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: 12/26/2022] [Accepted: 04/22/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND LRRC6 is an assembly factor for dynein arms in the cytoplasm of motile ciliated cells, and when mutated, dynein arm components remained in the cytoplasm. Here, we demonstrate the role of LRRC6 in the active nuclear translocation of FOXJ1, a master regulator for cilia-associated gene transcription. METHODS We generated Lrrc6 knockout (KO) mice, and we investigated the role of LRRC6 on ciliopathy development by using proteomic, transcriptomic, and immunofluorescence analysis. Experiments on mouse basal cell organoids confirmed the biological relevance of our findings. RESULTS The absence of LRRC6 in multi-ciliated cells hinders the assembly of ODA and IDA components of cilia; in this study, we showed that the overall expression of proteins related to cilia decreased as well. Expression of cilia-related transcripts, specifically ODA and IDA components, dynein axonemal assembly factors, radial spokes, and central apparatus was lower in Lrrc6 KO mice than in wild-type mice. We demonstrated that FOXJ1 was present in the cytoplasm and translocated into the nucleus when LRRC6 was expressed and that this process was blocked by INI-43, an importin α inhibitor. CONCLUSIONS Taken together, these results hinted at the LRRC6 transcriptional regulation of cilia-related genes via the nuclear translocation of FOXJ1. Video Abstract.
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Affiliation(s)
- Dong Yun Kim
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Seoul, Republic of Korea
| | - Yu Jin Sub
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Hye-Youn Kim
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Kyeong Jee Cho
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Won Il Choi
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Yo Jun Choi
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Min Goo Lee
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Friedhelm Hildebrandt
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
| | - Heon Yung Gee
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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Ullmann N, Santamaria F, Allegorico A, Fainardi V, Borrelli M, Ferraro VA, Proietti E, Parisi GF, Romagnoli V, Lucca F, Gallucci M, Mappa L, Lelli M, Amato D, Petrarca L, Cimino G, Sacco O, Calogero C, Patria MF, Acquafredda A, Ferlisi A, Maschio M, Kantar A, Cutrera R. Primary ciliary dyskinesia: A multicenter survey on clinical practice and patient management in Italy. Pediatr Pulmonol 2023; 58:1127-1135. [PMID: 36588099 DOI: 10.1002/ppul.26303] [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: 02/27/2022] [Revised: 09/22/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023]
Abstract
INTRODUCTION There are no recent data on primary ciliary dyskinesia (PCD) distribution, diagnosis and treatment in Italy. METHODS A descriptive study based on a survey questionnaire. It consisted of three sections (patients, diagnosis, and treatment), and sent to all the Italian PCD Centers. RESULTS Questionnaires obtained from 20/22 centers in 12/20 regions showed that the total number of PCD patients treated at the participating centers was of 416. Out of all centers, 55% follow <20 patients, two centers have >40 patients, and 75% follow both pediatric and adults. Age at diagnosis was between 4 and 8 years in 45% of the centers, <3 years in three centers. Nasal nitric oxide, transmission electron microscopy and ciliary high-speed video microscopy are performed in 75%, 90%, and 40% of centers, respectively. Immunofluorescence is available in five centers. Genetic analysis is offered in 55% of the centers, and in seven centers >50% of the patients have a known genetic profile. Patients treated at all centers receive inhaled saline solutions, corticosteroids and chest physiotherapy. Prophylactic antibiotics and mucolytics are prescribed in 95% and 50% of the centers, respectively. Pseudomonas infection is treated with oral or inhaled antibiotics. CONCLUSIONS Many Italian centers care for a small number of pediatric and adult patients, and diagnosis is often delayed. We found a great variability in the available diagnostic procedures, as well in the prescribed therapies. Our study will help to uniform diagnostic algorithm and share treatments protocols for PCD in Italy and allowed to set specific national goals.
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Affiliation(s)
- Nicola Ullmann
- Academic Department of Pediatrics (DPUO), Pediatric Pulmonology & Respiratory Intermediate Care Unit, Sleep and Long Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Francesca Santamaria
- Department of Translational Medical Sciences, Pediatric Pulmonology, Federico II University, Naples, Italy
| | - Annalisa Allegorico
- Academic Department of Pediatrics (DPUO), Pediatric Pulmonology & Respiratory Intermediate Care Unit, Sleep and Long Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Valentina Fainardi
- Department of Medicine and Surgery, Pediatric Clinic, Pietro Barilla Children's Hospital, University of Parma, Parma, Italy
| | - Melissa Borrelli
- Department of Translational Medical Sciences, Pediatric Pulmonology, Federico II University, Naples, Italy
| | - Valentina A Ferraro
- Department of Women's and Children's Health, University of Padua, Padova, Italy
| | | | - Giuseppe F Parisi
- Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Vittorio Romagnoli
- Department of Mother and Child Health, Pediatric Unit, G. Salesi Children's Hospital, Ancona, Italy
| | - Francesca Lucca
- Cystic Fibrosis Centre, Azienda Ospedaliero-Universitaria Integrata di Verona, Verona, Italy
| | - Marcella Gallucci
- Pediatric Unit-IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Luigi Mappa
- Department of Interdisciplinary Medicine (D.I.M.), Pediatric Unit "Trambusti" Cystic Fibrosis, University of Bari, Bari, Italy
| | - Mara Lelli
- Pediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Doriana Amato
- Department of Pediatrics, Pediatric Hospital Giovanni XXIII, University of Bari, Bari, Italy
| | - Laura Petrarca
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Cimino
- Cystic Fibrosis Regional Reference Center, A.O.U. Policlinico Umberto I, Rome, Italy
| | - Oliviero Sacco
- Department of Pediatrics, Pulmonary Disease Unit, G. Gaslini Research Institute and University Hospital, Genoa, Italy
| | - Claudia Calogero
- Pediatric Pulmonary Unit, Meyer Children's University Hospital, Florence, Italy
| | - Maria Francesca Patria
- Pediatric Highly Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Annalisa Ferlisi
- Cystic Fibrosis and Respiratory Pediatric Center, Children's Hospital G. Di Cristina, ARNAS Civico-Di Cristina-Benfratelli, Palermo, Italy
| | - Massimo Maschio
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Ahmad Kantar
- Pediatric Asthma and Cough Centre, Istituti Ospedalieri Bergamaschi - Gruppo Ospedaliero San Donato, Bergamo, Italy
| | - Renato Cutrera
- Academic Department of Pediatrics (DPUO), Pediatric Pulmonology & Respiratory Intermediate Care Unit, Sleep and Long Term Ventilation Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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Rabiasz A, Ziętkiewicz E. Schmidtea mediterranea as a Model Organism to Study the Molecular Background of Human Motile Ciliopathies. Int J Mol Sci 2023; 24:ijms24054472. [PMID: 36901899 PMCID: PMC10002865 DOI: 10.3390/ijms24054472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 03/12/2023] Open
Abstract
Cilia and flagella are evolutionarily conserved organelles that form protrusions on the surface of many growth-arrested or differentiated eukaryotic cells. Due to the structural and functional differences, cilia can be roughly classified as motile and non-motile (primary). Genetically determined dysfunction of motile cilia is the basis of primary ciliary dyskinesia (PCD), a heterogeneous ciliopathy affecting respiratory airways, fertility, and laterality. In the face of the still incomplete knowledge of PCD genetics and phenotype-genotype relations in PCD and the spectrum of PCD-like diseases, a continuous search for new causative genes is required. The use of model organisms has been a great part of the advances in understanding molecular mechanisms and the genetic basis of human diseases; the PCD spectrum is not different in this respect. The planarian model (Schmidtea mediterranea) has been intensely used to study regeneration processes, and-in the context of cilia-their evolution, assembly, and role in cell signaling. However, relatively little attention has been paid to the use of this simple and accessible model for studying the genetics of PCD and related diseases. The recent rapid development of the available planarian databases with detailed genomic and functional annotations prompted us to review the potential of the S. mediterranea model for studying human motile ciliopathies.
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Christen M, Ludwig-Peisker O, Jagannathan V, Hetzel U, Schönball U, Leeb T. STK36 splice site variant in an Australian Shepherd dog with primary ciliary dyskinesia. Anim Genet 2023; 54:412-415. [PMID: 36786090 DOI: 10.1111/age.13306] [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: 01/20/2022] [Revised: 01/20/2023] [Accepted: 02/01/2023] [Indexed: 02/15/2023]
Abstract
Primary ciliary dyskinesia (PCD) represents a group of diseases characterized by impaired movement of cilia and subsequent health problems in diverse organ systems, notably the respiratory tract. Almost 50 candidate genes for PCD are known in humans. In this study, we investigated an Australian Shepherd dog with a history of recurrent respiratory infections and nasal discharge. A transmission electron microscopy investigation led to the diagnosis of PCD with central pair defect, in which the normal 9:2 arrangement of respiratory cilia was altered and reduced to a 9:0 arrangement. Whole genome sequencing data from the affected dog was obtained and searched for variants in PCD candidate genes that were not present in 918 control genomes from different breeds. This revealed a homozygous single base pair exchange at a splice site of STK36, XM_038585732.1:c.2868-1G>A. The mutant allele was absent from 281 additionally genotyped Australian Shepherd dogs. RT-PCR confirmed aberrant splicing in the affected dog with the skipping of exon 20 and the insertion of a cryptic exon, which is predicted to lead to a premature stop codon and truncation of 36% of the STK36 wild-type open reading frame, XP_038441660.1:(p.Met957Profs*11). STK36 variants were previously reported to cause PCD in humans and mice. The knowledge from other species together with the absence of the mutant allele in more than 1000 control dogs suggests STK36:c.2868-1G>A as the most likely candidate variant for PCD in the investigated case.
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Affiliation(s)
- Matthias Christen
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | | | - Vidhya Jagannathan
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Udo Hetzel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Tosso Leeb
- Institute of Genetics, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Li L, Liu R, Wang Y, Wang W. Type II congenital pulmonary airway malformation with primary ciliary dyskinesia in a 4-year-old child: A case report. Pediatr Pulmonol 2023; 58:336-339. [PMID: 36165169 DOI: 10.1002/ppul.26167] [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: 03/15/2022] [Revised: 08/25/2022] [Accepted: 09/23/2022] [Indexed: 01/11/2023]
Abstract
A congenital pulmonary airway malformation (CPAM) combined with primary ciliary dyskinesia (PCD) has not been described in literature. Herein, we described the case of a 4-year-old boy who presented to us with recurrent productive cough and rhinorrhea for 2 years. High resolution computed tomography of the thorax revealed multiple, cystic, transparent shadows of different sizes near the posterior thoracic cavity in the lower lobe of the left lung. Thoracoscopic segmentectomy was carried out and histology confirmed a type II CPAM. Whole-exome sequencing revealed a compound heterozygous mutation (c.10568+1G>A, c.9484delG) in the DNAH11 gene associated with PCD that originated from the boy's mother and father, respectively. This report showed that when a child with CPAM presents with a productive cough and recurrent sinusitis, irrespective of situs inversus, PCD should be suspected. Genetic testing can aid in diagnosis.
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Affiliation(s)
- Li Li
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Rou Liu
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Yuanxiang Wang
- Department of Thoracic Surgery, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - Wenjian Wang
- Department of Respiratory Diseases, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
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Muacevic A, Adler JR, Borges J, Cardoso AL, Barbosa T. Domiciliary High-Flow Nasal Therapy in Primary Ciliary Dyskinesia. Cureus 2023; 15:e34177. [PMID: 36843741 PMCID: PMC9957583 DOI: 10.7759/cureus.34177] [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] [Accepted: 01/24/2023] [Indexed: 01/26/2023] Open
Abstract
We report the case of an adolescent with severe primary ciliary dyskinesia (PCD) phenotype associated with a rare genotype. His clinical condition deteriorated, with daily cough and breathlessness, hypoxemia, and lung function decline. Despite being started on home noninvasive ventilation (NIV), the symptoms progressed to dyspnea at rest and thoracic pain. High-flow nasal cannula (HFNC) was started during the daytime as an adjuvant to NIV, and he was started on regular oral opioids for pain and dyspnea control. There was a clear improvement in comfort and dyspnea and breathing work relief. Additionally, better exercise tolerance was also noted. He is currently on the lung transplant waiting list. We aim to emphasize the benefits of HFNC as an add-on therapy for the management of chronic breathlessness since our patient experienced an improvement in breathing and exercise tolerance. However, there is a paucity of studies regarding domiciliary HFNC, particularly in pediatric age. Therefore, further studies are needed to achieve optimal and personalized care. Close monitoring and frequent reassessment in a specialized center are key to adequate management.
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Forrest K, Barricella AC, Pohar SA, Hinman AM, Amack JD. Understanding laterality disorders and the left-right organizer: Insights from zebrafish. Front Cell Dev Biol 2022; 10:1035513. [PMID: 36619867 PMCID: PMC9816872 DOI: 10.3389/fcell.2022.1035513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Vital internal organs display a left-right (LR) asymmetric arrangement that is established during embryonic development. Disruption of this LR asymmetry-or laterality-can result in congenital organ malformations. Situs inversus totalis (SIT) is a complete concordant reversal of internal organs that results in a low occurrence of clinical consequences. Situs ambiguous, which gives rise to Heterotaxy syndrome (HTX), is characterized by discordant development and arrangement of organs that is associated with a wide range of birth defects. The leading cause of health problems in HTX patients is a congenital heart malformation. Mutations identified in patients with laterality disorders implicate motile cilia in establishing LR asymmetry. However, the cellular and molecular mechanisms underlying SIT and HTX are not fully understood. In several vertebrates, including mouse, frog and zebrafish, motile cilia located in a "left-right organizer" (LRO) trigger conserved signaling pathways that guide asymmetric organ development. Perturbation of LRO formation and/or function in animal models recapitulates organ malformations observed in SIT and HTX patients. This provides an opportunity to use these models to investigate the embryological origins of laterality disorders. The zebrafish embryo has emerged as an important model for investigating the earliest steps of LRO development. Here, we discuss clinical characteristics of human laterality disorders, and highlight experimental results from zebrafish that provide insights into LRO biology and advance our understanding of human laterality disorders.
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Affiliation(s)
- Kadeen Forrest
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Alexandria C. Barricella
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Sonny A. Pohar
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Anna Maria Hinman
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States
| | - Jeffrey D. Amack
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, NY, United States,BioInspired Syracuse: Institute for Material and Living Systems, Syracuse, NY, United States,*Correspondence: Jeffrey D. Amack,
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38
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Rethinking the cilia hypothesis of hydrocephalus. Neurobiol Dis 2022; 175:105913. [DOI: 10.1016/j.nbd.2022.105913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
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Amack JD. Structures and functions of cilia during vertebrate embryo development. Mol Reprod Dev 2022; 89:579-596. [PMID: 36367893 PMCID: PMC9805515 DOI: 10.1002/mrd.23650] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/05/2022] [Accepted: 10/28/2022] [Indexed: 11/13/2022]
Abstract
Cilia are hair-like structures that project from the surface of cells. In vertebrates, most cells have an immotile primary cilium that mediates cell signaling, and some specialized cells assemble one or multiple cilia that are motile and beat synchronously to move fluids in one direction. Gene mutations that alter cilia structure or function cause a broad spectrum of disorders termed ciliopathies that impact virtually every system in the body. A wide range of birth defects associated with ciliopathies underscores critical functions for cilia during embryonic development. In many cases, the mechanisms underlying cilia functions during development and disease remain poorly understood. This review describes different types of cilia in vertebrate embryos and discusses recent research results from diverse model systems that provide novel insights into how cilia form and function during embryo development. The work discussed here not only expands our understanding of in vivo cilia biology, but also opens new questions about cilia and their roles in establishing healthy embryos.
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Affiliation(s)
- Jeffrey D. Amack
- Department of Cell and Developmental Biology, State University of New York Upstate Medical University, Syracuse, New York, USA,,BioInspired Syracuse: Institute for Material and Living Systems, Syracuse, New York, USA
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Leslie JS, Hjeij R, Vivante A, Bearce EA, Dyer L, Wang J, Rawlins L, Kennedy J, Ubeyratna N, Fasham J, Irons ZH, Craig SB, Koenig J, George S, Pode-Shakked B, Bolkier Y, Barel O, Mane S, Frederiksen KK, Wenger O, Scott E, Cross HE, Lorentzen E, Norris DP, Anikster Y, Omran H, Grimes DT, Crosby AH, Baple EL. Biallelic DAW1 variants cause a motile ciliopathy characterized by laterality defects and subtle ciliary beating abnormalities. Genet Med 2022; 24:2249-2261. [PMID: 36074124 PMCID: PMC10584193 DOI: 10.1016/j.gim.2022.07.019] [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: 11/23/2021] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 01/27/2023] Open
Abstract
PURPOSE The clinical spectrum of motile ciliopathies includes laterality defects, hydrocephalus, and infertility as well as primary ciliary dyskinesia when impaired mucociliary clearance results in otosinopulmonary disease. Importantly, approximately 30% of patients with primary ciliary dyskinesia lack a genetic diagnosis. METHODS Clinical, genomic, biochemical, and functional studies were performed alongside in vivo modeling of DAW1 variants. RESULTS In this study, we identified biallelic DAW1 variants associated with laterality defects and respiratory symptoms compatible with motile cilia dysfunction. In early mouse embryos, we showed that Daw1 expression is limited to distal, motile ciliated cells of the node, consistent with a role in left-right patterning. daw1 mutant zebrafish exhibited reduced cilia motility and left-right patterning defects, including cardiac looping abnormalities. Importantly, these defects were rescued by wild-type, but not mutant daw1, gene expression. In addition, pathogenic DAW1 missense variants displayed reduced protein stability, whereas DAW1 loss-of-function was associated with distal type 2 outer dynein arm assembly defects involving axonemal respiratory cilia proteins, explaining the reduced cilia-induced fluid flow in particle tracking velocimetry experiments. CONCLUSION Our data define biallelic DAW1 variants as a cause of human motile ciliopathy and determine that the disease mechanism involves motile cilia dysfunction, explaining the ciliary beating defects observed in affected individuals.
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Affiliation(s)
- Joseph S Leslie
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom
| | - Rim Hjeij
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
| | - Asaf Vivante
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Pediatrics B and Pediatric Nephrology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
| | | | - Laura Dyer
- MRC Harwell Institute, Harwell Campus, Oxfordshire, Oxford, United Kingdom
| | - Jiaolong Wang
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Lettie Rawlins
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom
| | - Joanna Kennedy
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom
| | - Nishanka Ubeyratna
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom
| | - James Fasham
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom
| | - Zoe H Irons
- Institute of Molecular Biology, University of Oregon, Eugene, OR
| | - Samuel B Craig
- Institute of Molecular Biology, University of Oregon, Eugene, OR
| | - Julia Koenig
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
| | - Sebastian George
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
| | - Ben Pode-Shakked
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Metabolic Disease Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Yoav Bolkier
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Pediatric Heart Institute, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Ortal Barel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; The Genomic Unit, Sheba Cancer Research Center, Sheba Medical Center, Ramat Gan, Israel; Wohl Institute for Translational Medicine, Sheba Medical Center, Ramat Gan, Israel
| | - Shrikant Mane
- Department of Genetics, Yale School of Medicine, New Haven, CT
| | | | - Olivia Wenger
- New Leaf Center Clinic for Special Children, Mt Eaton, OH
| | - Ethan Scott
- New Leaf Center Clinic for Special Children, Mt Eaton, OH
| | - Harold E Cross
- Department of Ophthalmology and Vision Science, University of Arizona College of Medicine, University of Arizona, Tucson, AZ
| | - Esben Lorentzen
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Dominic P Norris
- MRC Harwell Institute, Harwell Campus, Oxfordshire, Oxford, United Kingdom
| | - Yair Anikster
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Metabolic Disease Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel; Wohl Institute for Translational Medicine, Sheba Medical Center, Ramat Gan, Israel
| | - Heymut Omran
- Department of General Pediatrics, University Hospital Muenster, Muenster, Germany
| | - Daniel T Grimes
- Institute of Molecular Biology, University of Oregon, Eugene, OR.
| | - Andrew H Crosby
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom.
| | - Emma L Baple
- Institute of Biomedical and Clinical Science, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom; Peninsula Clinical Genetics Service, Royal Devon University Healthcare NHS Foundation Trust, Exeter, United Kingdom.
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Wang L, Li X, Liu G, Pan J. FBB18 participates in preassembly of almost all axonemal dyneins independent of R2TP complex. PLoS Genet 2022; 18:e1010374. [PMID: 36026524 PMCID: PMC9455862 DOI: 10.1371/journal.pgen.1010374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/08/2022] [Accepted: 08/04/2022] [Indexed: 11/19/2022] Open
Abstract
Assembly of dynein arms requires cytoplasmic processes which are mediated by dynein preassembly factors (DNAAFs). CFAP298, which is conserved in organisms with motile cilia, is required for assembly of dynein arms but with obscure mechanisms. Here, we show that FBB18, a Chlamydomonas homologue of CFAP298, localizes to the cytoplasm and functions in folding/stabilization of almost all axonemal dyneins at the early steps of dynein preassembly. Mutation of FBB18 causes no or short cilia accompanied with partial loss of both outer and inner dynein arms. Comparative proteomics using 15N labeling suggests partial degradation of almost all axonemal dynein heavy chains (DHCs). A mutant mimicking a patient variant induces particular loss of DHCα. FBB18 associates with 9 DNAAFs and 14 out of 15 dynein HCs but not with IC1/IC2. FBB18 interacts with RuvBL1/2, components of the HSP90 co-chaperone R2TP complex but not the holo-R2TP complex. Further analysis suggests simultaneous formation of multiple DNAAF complexes involves dynein folding/stability and thus provides new insights into axonemal dynein preassembly. Motile cilia are important for human physiology and defects in cilia motility may cause human disorders such as male infertility and primary ciliary dyskinesia. The motility of cilia requires preassembly of axonemal dyneins. Using a combination of genetic and other approaches, we have studied the working mechanism of FBB18, a Chlamydomonas homologue of CFAP298, defects in which result in primary ciliary dyskinesia. We found that FBB18 participates in dynein folding/stability in the cytoplasm, which is distinct from its proposed function in ciliary targeting of dynein complexes or stabilization of dynein arms within cilia. In addition, we have provided evidence that multiple distinct complexes are simultaneously formed to participate in dynein folding, thus providing new insights into dynein preassembly. Last but not least, we showed that RuvBL1/2 of the HSP90 co-chaperone R2TP complex may function independently of the R2TP complex in dynein disassembly. This work has both scientific and medical significance and will be of general interest to the fields of ciliary biology and protein folding/stability.
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Affiliation(s)
- Limei Wang
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Xuecheng Li
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Guang Liu
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Junmin Pan
- MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong Province, China
- * E-mail:
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S Kumar S, Ray A, Kabra SK, Sinha S. Coexistence of pan-hypogammaglobulinaemia and primary ciliary dyskinesia. BMJ Case Rep 2022; 15:e248812. [PMID: 35609933 PMCID: PMC9131111 DOI: 10.1136/bcr-2022-248812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2022] [Indexed: 11/03/2022] Open
Abstract
A patient, an adolescent male, presented to us with complaints of recurrent respiratory tract infections since childhood. Differentials considered were cystic fibrosis (CF), bronchial asthma with allergic bronchopulmonary aspergillosis (ABPA), primary ciliary dyskinesia (PCD) and primary immunodeficiency disorders. Sweat chloride test, total IgE and Aspergillus fumigatus specific serum IgE and IgG levels were normal ruling out CF and ABPA. Nasal nitric oxide (NO) screening test showed reduced NO levels, and high-speed video microscopy of nasal scrapings showed stiff beating cilia with reduced ciliary beat frequency confirming the diagnosis of PCD. Immunodeficiency workup showed reduced serum IgG, IgA and IgM, when repeated on two separate occasions when the patient was not harbouring any active infection, suggestive of pan-hypogammaglobulinaemia. Thus, a diagnosis of coexistent PCD and pan-hypogammaglobulinaemia was made. Detection of immunodeficiency disorders is important in patients with PCD as they may benefit from immunoglobulin replacement.
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Affiliation(s)
- Swasthi S Kumar
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Animesh Ray
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Sushil Kumar Kabra
- Department of Medicine, Pediatrics, All India Institute of Medical Sciences, New Delhi, Delhi, India
| | - Sanjeev Sinha
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
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Garcia-Bonilla M, McAllister JP, Limbrick DD. Genetics and Molecular Pathogenesis of Human Hydrocephalus. Neurol India 2021; 69:S268-S274. [PMID: 35102976 DOI: 10.4103/0028-3886.332249] [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: 11/04/2022]
Abstract
Hydrocephalus is a neurological disorder with an incidence of 80-125 per 100,000 live births in the United States. The molecular pathogenesis of this multidimensional disorder is complex and has both genetic and environmental influences. This review aims to discuss the genetic and molecular alterations described in human hydrocephalus, from well-characterized, heritable forms of hydrocephalus (e.g., X-linked hydrocephalus from L1CAM variants) to those affecting cilia motility and other complex pathologies such as neural tube defects and Dandy-Walker syndrome. Ventricular zone disruption is one key pattern among congenital and acquired forms of hydrocephalus, with abnormalities in cadherins, which mediate neuroepithelium/ependymal cell junctions and contribute to the pathogenesis and severity of the disease. Given the relationship between hydrocephalus pathogenesis and neurodevelopment, future research should elucidate the genetic and molecular mechanisms that regulate ventricular zone integrity and stem cell biology.
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Affiliation(s)
- Maria Garcia-Bonilla
- Department of Neurosurgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - James P McAllister
- Department of Neurosurgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - David D Limbrick
- Department of Neurosurgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
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A Study on the Genetics of Primary Ciliary Dyskinesia. J Clin Med 2021; 10:jcm10215102. [PMID: 34768622 PMCID: PMC8584573 DOI: 10.3390/jcm10215102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Primary ciliary dyskinesia (PCD) is a poorly understood disorder. It is primarily autosomal recessive and is prevalent in tribal communities of the United Arab Emirates due to consanguineous marriages. This retrospective study aimed to assess the pathogenicity of the genetic variants of PCD in indigenous patients with significant clinical respiratory problems. Pathogenicity scores of variants obtained from the chart review were consolidated using the Ensembl Variant Effect Predictor. The multidimensional dataset of scores was clustered into three groups based on their pathogenicity. Sequence alignment and the Jensen–Shannon Divergence (JSD) were generated to evaluate the amino acid conservation at the site of the variation. One-hundred and twelve variants of 28 genes linked to PCD were identified in 66 patients. Twenty-two variants were double heterozygous, two triple heterozygous, and seven homozygous. Of the thirteen novel variants, two, c.11839 + 1G > A in dynein, axonemal, heavy chain 11 (DNAH11) and p.Lys92Trpfs in dynein, axonemal, intermediate chain 1 (DNAI1) were associated with dextrocardia with situs inversus, and one, p.Gly21Val in coiled-coil domain-containing protein 40 (CCDC40), with absent inner dynein arms. Homozygous C1orf127:p.Arg113Ter (rs558323413) was also associated with laterality defects in two related patients. The majority of variants were missense involving conserved residues with a median JSD score of 0.747. Homology models of two deleterious variants in the stalk of DNAH11, p.Gly3102Asp and p.Leu3127Arg, revealed structural importance of the conserved glycine and leucine. These results define potentially damaging PCD variants in the region. Future studies, however, are needed to fully comprehend the genetic underpinnings of PCD.
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Brennan SK, Ferkol TW, Davis SD. Emerging Genotype-Phenotype Relationships in Primary Ciliary Dyskinesia. Int J Mol Sci 2021; 22:ijms22158272. [PMID: 34361034 PMCID: PMC8348038 DOI: 10.3390/ijms22158272] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/25/2021] [Accepted: 07/26/2021] [Indexed: 12/26/2022] Open
Abstract
Primary ciliary dyskinesia (PCD) is a rare inherited condition affecting motile cilia and leading to organ laterality defects, recurrent sino-pulmonary infections, bronchiectasis, and severe lung disease. Research over the past twenty years has revealed variability in clinical presentations, ranging from mild to more severe phenotypes. Genotype and phenotype relationships have emerged. The increasing availability of genetic panels for PCD continue to redefine these genotype-phenotype relationships and reveal milder forms of disease that had previously gone unrecognized.
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Affiliation(s)
- Steven K Brennan
- Department of Pediatrics, Division of Allergy and Pulmonary Medicine, Campus Box 8116, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA;
- Correspondence:
| | - Thomas W Ferkol
- Department of Pediatrics, Division of Allergy and Pulmonary Medicine, Campus Box 8116, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA;
| | - Stephanie D Davis
- Department of Pediatrics, University of North Carolina School of Medicine, 101 Manning Drive, Chapel Hill, NC 27514, USA;
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Johnston SL, Goldblatt DL, Evans SE, Tuvim MJ, Dickey BF. Airway Epithelial Innate Immunity. Front Physiol 2021; 12:749077. [PMID: 34899381 PMCID: PMC8662554 DOI: 10.3389/fphys.2021.749077] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 10/28/2021] [Indexed: 01/21/2023] Open
Abstract
Besides providing an essential protective barrier, airway epithelial cells directly sense pathogens and respond defensively. This is a frontline component of the innate immune system with specificity for different pathogen classes. It occurs in the context of numerous interactions with leukocytes, but here we focus on intrinsic epithelial mechanisms. Type 1 immune responses are directed primarily at intracellular pathogens, particularly viruses. Prominent stimuli include microbial nucleic acids and interferons released from neighboring epithelial cells. Epithelial responses revolve around changes in the expression of interferon-sensitive genes (ISGs) that interfere with viral replication, as well as the further induction of interferons that signal in autocrine and paracrine manners. Type 2 immune responses are directed primarily at helminths and fungi. Prominent pathogen stimuli include proteases and chitin, and important responses include mucin hypersecretion and chitinase release. Type 3 immune responses are directed primarily at extracellular microbial pathogens, including bacteria and fungi, as well as viruses during their extracellular phase of infection. Prominent microbial stimuli include bacterial wall components, such as lipopeptides and endotoxin, as well as microbial nucleic acids. Key responses are the release of reactive oxygen species (ROS) and antimicrobial peptides (AMPs). For all three types of response, paracrine signaling to neighboring epithelial cells induces resistance to infection over a wide field. Often, the epithelial effector molecules themselves also have signaling properties, in addition to the release of inflammatory cytokines that boost local innate immunity. Together, these epithelial mechanisms provide a powerful first line of pathogen defense, recruit leukocytes, and instruct adaptive immune responses.
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Affiliation(s)
- Sebastian L Johnston
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - David L Goldblatt
- Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, United States.,University of Texas Rio Grande School of Medicine, Edinburg, TX, United States.,Howard Hughes Medical Institute, Chevy Chase, MD, United States
| | - Scott E Evans
- Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Michael J Tuvim
- Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Burton F Dickey
- Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, United States
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