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Nieto-Benito LM, Suárez-Fernández R, Campos-Domínguez M. A novel pathogenic variation of DOCK6 gene: the genotype-phenotype correlation in Adams-Oliver syndrome. Mol Biol Rep 2023; 50:5519-5521. [PMID: 37133614 DOI: 10.1007/s11033-023-08430-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/04/2023] [Indexed: 05/04/2023]
Abstract
BACKGROUND Adams-Oliver syndrome (AOS) (#614,219) is a multiple malformation disorder characterized by the presence of aplasia cutis congenita (ACC) and transverse terminal limb defects (TTLD). METHODS AND RESULTS We describe a confirmed case of AOS with a novel pathogenic variation in Dedicator Of Cytokinesis 6 (DOCK6) gene, with neurological abnormalities, characterized by the presence of a multiple malformation entity with extensive cardiological and neurological abnormalities. CONCLUSIONS In AOS, genotype-phenotype correlations have been described. DOCK6 mutations appear to be related with congenital cardiac and central nervous system malformations associated with intellectual disability, as illustrated in the present case.
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Affiliation(s)
- Lula Maria Nieto-Benito
- Department of Dermatology and Venereology, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, 46 Doctor Esquerdo St, 28007, Madrid, Spain.
| | - Ricardo Suárez-Fernández
- Department of Dermatology and Venereology, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, 46 Doctor Esquerdo St, 28007, Madrid, Spain
| | - Minia Campos-Domínguez
- Department of Dermatology and Venereology, Hospital General Universitario Gregorio Marañón, Universidad Complutense de Madrid, 46 Doctor Esquerdo St, 28007, Madrid, Spain
- Laboratory of Immune-regulation, "Gregorio Marañón" Health Research Institute (IISGM), Madrid, Spain
- Medical School, Universidad Complutense de Madrid, Madrid, Spain
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2
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Prentis LE, Singleton CD, Bickel JD, Allen WJ, Rizzo RC. A molecular evolution algorithm for ligand design in DOCK. J Comput Chem 2022; 43:1942-1963. [PMID: 36073674 PMCID: PMC9623574 DOI: 10.1002/jcc.26993] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 06/13/2022] [Accepted: 08/03/2022] [Indexed: 01/11/2023]
Abstract
As a complement to virtual screening, de novo design of small molecules is an alternative approach for identifying potential drug candidates. Here, we present a new 3D genetic algorithm to evolve molecules through breeding, mutation, fitness pressure, and selection. The method, termed DOCK_GA, builds upon and leverages powerful sampling, scoring, and searching routines previously implemented into DOCK6. Three primary experiments were used during development: Single-molecule evolution evaluated three selection methods (elitism, tournament, and roulette), in four clinically relevant systems, in terms of mutation type and crossover success, chemical properties, ensemble diversity, and fitness convergence, among others. Large scale benchmarking assessed performance across 651 different protein-ligand systems. Ensemble-based evolution demonstrated using multiple inhibitors simultaneously to seed growth in a SARS-CoV-2 target. Key takeaways include: (1) The algorithm is robust as demonstrated by the successful evolution of molecules across a large diverse dataset. (2) Users have flexibility with regards to parent input, selection method, fitness function, and molecular descriptors. (3) The program is straightforward to run and only requires a single executable and input file at run-time. (4) The elitism selection method yields more tightly clustered molecules in terms of 2D/3D similarity, with more favorable fitness, followed by tournament and roulette.
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Affiliation(s)
- Lauren E. Prentis
- Department of Biochemistry & Cell BiologyStony Brook UniversityStony BrookNew YorkUSA
| | | | - John D. Bickel
- Department of ChemistryStony Brook UniversityStony BrookNew YorkUSA
| | - William J. Allen
- Department of Applied Mathematics & StatisticsStony Brook UniversityStony BrookNew YorkUSA
| | - Robert C. Rizzo
- Department of Applied Mathematics & StatisticsStony Brook UniversityStony BrookNew YorkUSA,Institute of Chemical Biology & Drug DiscoveryStony Brook UniversityStony BrookNew YorkUSA,Laufer Center for Physical & Quantitative BiologyStony Brook UniversityStony BrookNew YorkUSA
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3
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Zhang ZY, Sun YY, Wang HC, Fu WN, Sun CF. Overexpression of DOCK6 in oral squamous cell cancer promotes cellular migration and invasion and is associated with poor prognosis. Arch Oral Biol 2021; 133:105297. [PMID: 34742001 DOI: 10.1016/j.archoralbio.2021.105297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/09/2021] [Accepted: 10/21/2021] [Indexed: 11/23/2022]
Abstract
OBJECTIVE We aimed to identify the role of DOCK6 in oral squamous cell cancer (OSCC) in this study. DESIGN DOCK6 expression in OSCC was analyzed using TCGA and GEO datasets and was verified by quantitative real-time PCR, Western blotting, and immunohistochemistry. Statistical analyses were performed to evaluate the relationships between DOCK6 expression and the clinicopathological characteristics of OSCC patients. Wound healing and Transwell assays were performed to assess OSCC cell migration and invasion, respectively. STRING and GO analyses and gene set enrichment analysis were used to identify DOCK6-interacting proteins, their functions and their potential pathways. RESULTS DOCK6 was significantly upregulated at both the mRNA and protein levels in OSCC tissues (all P < 0.05). DOCK6 levels were positively correlated with age (P < 0.05), lymph node metastasis status (P < 0.001), clinical stage (P < 0.001), differentiation (P < 0.05), and poor clinical outcome (P < 0.05) in OSCC patients. Furthermore, univariate and multivariate analyses revealed that high DOCK6 expression (P < 0.01) and clinical stage III-IV (P < 0.05) might serve as independent prognostic factors for OSCC patients. Functionally, DOCK6 silencing significantly suppressed OSCC cell migration and invasion (all P < 0.05). Ten proteins that interact with DOCK6, more than ten functions related to cancer, and more than six pathways related to DOCK6 in OSCC were identified via bioinformatic methods. CONCLUSION DOCK6 is upregulated in OSCC, is associated with a poor prognosis in OSCC patients and increases OSCC cells migration and invasion. These findings suggest that DOCK6 may be a potential therapeutic target with prognostic implication in patients with OSCC.
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Cerikan B, Schiebel E. Mechanism of cell-intrinsic adaptation to Adams-Oliver Syndrome gene DOCK6 disruption highlights ubiquitin-like modifier ISG15 as a regulator of RHO GTPases. Small GTPases 2017; 10:210-217. [PMID: 28287327 DOI: 10.1080/21541248.2017.1297882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
DOCK6 is a RAC1/CDC42 guanine nucleotide exchange factor, however, little is known about its function and sub-cellular localization. DOCK6 regulates the balance between RAC1 and RHOA activity during cell adhesion and is important for CDC42-dependent mitotic chromosome alignment. Surprisingly, a cell intrinsic adaptation mechanism compensates for errors in these DOCK6 functions that arise as a consequence of prolonged DOCK6 depletion or complete removal in DOCK6 knockout cells. Down-regulation of the ubiquitin-like modifier ISG15 accounts for this adaptation. Strikingly, although most other DOCK family proteins are deployed on the plasma membrane, here we show that DOCK6 localizes to the endoplasmic reticulum (ER) in dependence of its DHR-1 domain. ER localization of DOCK6 opens up new insights into its functions.
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Affiliation(s)
- Berati Cerikan
- a Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Allianz , Heidelberg , Germany
| | - Elmar Schiebel
- a Zentrum für Molekulare Biologie der Universität Heidelberg, DKFZ-ZMBH Allianz , Heidelberg , Germany
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5
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Hassed S, Li S, Mulvihill J, Aston C, Palmer S. Adams-Oliver syndrome review of the literature: Refining the diagnostic phenotype. Am J Med Genet A 2017; 173:790-800. [PMID: 28160419 DOI: 10.1002/ajmg.a.37889] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 07/31/2016] [Indexed: 01/08/2023]
Abstract
The Adams-Oliver syndrome (AOS) is defined as aplasia cutis congenita (ACC) with transverse terminal limb defects (TTLD). Frequencies of associated anomalies are not well characterized. Six causative genes have been identified: ARHGAP31, DOCK6, EOGT, RBPJ, NOTCH1, and DLL4. We review 385 previously described individuals (139 non-familial and 246 familial probands and family members) and add clinical data on 13 previously unreported individuals with AOS. In addition to ACC and TTLD, the most commonly associated anomalies included a wide variety of central nervous system (CNS) anomalies and congenital heart defects each seen in 23%. CNS anomalies included structural anomalies, microcephaly, vascular defects, and vascular sequelae. CNS migration defects were common. Cutis marmorata telangiectasia congenita (CMTC) was found in 19% of the study population and other vascular anomalies were seen in 14%. Hemorrhage was listed as the cause of death for five of 25 deaths reported. A relatively large number of non-familial probands were reported to have hepatoportal sclerosis with portal hypertension and esophageal varices. Non-familial probands were more likely to have additional anomalies than were familial probands. The data reported herein provide a basis for refining the diagnostic features of AOS and suggest management recommendations for probands newly diagnosed with AOS. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Susan Hassed
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Shibo Li
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - John Mulvihill
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Christopher Aston
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Susan Palmer
- University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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Kim K, Yang DK, Kim S, Kang H. miR-142-3p Is a Regulator of the TGFβ-Mediated Vascular Smooth Muscle Cell Phenotype. J Cell Biochem 2016; 116:2325-33. [PMID: 25832008 DOI: 10.1002/jcb.25183] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 03/31/2015] [Indexed: 11/06/2022]
Abstract
The transforming growth factor β (TGFβ) signaling pathway is critical for the promotion and maintenance of the contractile phenotype of vascular smooth muscle cells (VSMCs). Though multiple microRNAs (miRNAs) implicated in the regulation of the VSMC phenotype have been identified, the modulation of miRNAs in the VSMCs by TGFβ signaling has not been fully described. In this study, we identified microRNA-142-3p (miR-142-3p) as a modulator of the VSMC phenotype in response to TGFβ signaling. We show that miR-142-3p is induced upon TGFβ signaling, leading to the repression of a novel target, dedicator of cytokinesis 6 (DOCK6). The downregulation of DOCK6 by miR-142-3p is critical for cell migration. Thus, this study demonstrates that miR-142-3p is a key regulator of the TGFβ-mediated contractile phenotype of VSMCs that acts through inhibiting cell migration through targeting DOCK6.
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Affiliation(s)
- Kwangho Kim
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 406-772, Republic of Korea
| | | | - Sunghwan Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu, 701-310, Republic of Korea
| | - Hara Kang
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 406-772, Republic of Korea
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Sukalo M, Tilsen F, Kayserili H, Müller D, Tüysüz B, Ruddy DM, Wakeling E, Ørstavik KH, Snape KM, Trembath R, De Smedt M, van der Aa N, Skalej M, Mundlos S, Wuyts W, Southgate L, Zenker M. DOCK6 mutations are responsible for a distinct autosomal-recessive variant of Adams-Oliver syndrome associated with brain and eye anomalies. Hum Mutat 2015; 36:593-8. [PMID: 25824905 DOI: 10.1002/humu.22795] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 03/27/2015] [Indexed: 12/18/2022]
Abstract
Adams-Oliver syndrome (AOS) is characterized by the association of aplasia cutis congenita with terminal transverse limb defects, often accompanied by additional cardiovascular or neurological features. Both autosomal-dominant and autosomal-recessive disease transmission have been observed, with recent gene discoveries indicating extensive genetic heterogeneity. Mutations of the DOCK6 gene were first described in autosomal-recessive cases of AOS and only five DOCK6-related families have been reported to date. Recently, a second type of autosomal-recessive AOS has been attributed to EOGT mutations in three consanguineous families. Here, we describe the identification of 13 DOCK6 mutations, the majority of which are novel, across 10 unrelated individuals from a large cohort comprising 47 sporadic cases and 31 AOS pedigrees suggestive of autosomal-recessive inheritance. DOCK6 mutations were strongly associated with structural brain abnormalities, ocular anomalies, and intellectual disability, thus suggesting that DOCK6-linked disease represents a variant of AOS with a particularly poor prognosis.
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Affiliation(s)
- Maja Sukalo
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
| | - Felix Tilsen
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
| | - Hülya Kayserili
- Medical Genetics Department, Istanbul Medical Faculty, Istanbul, Turkey.,Medical Genetics Department, School of Medicine, Koc University, Istanbul, Turkey
| | - Dietmar Müller
- Institut für Medizinische Genetik, Klinikum Chemnitz, Chemnitz, Germany
| | - Beyhan Tüysüz
- Department of Pediatric Genetics, Istanbul University, Istanbul, Turkey
| | | | - Emma Wakeling
- North West Thames Regional Genetics Service, North West London Hospitals NHS Trust, Harrow, UK
| | | | - Katie M Snape
- Department of Clinical Genetics, St. George's Healthcare NHS Trust, London, UK
| | - Richard Trembath
- Department of Clinical Genetics, Guy's Hospital, London, UK.,Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Maryse De Smedt
- Department of Medical Genetics, Leuven University Hospital, Leuven, Belgium
| | - Nathalie van der Aa
- Department of Medical Genetics, Antwerp University Hospital, Antwerp, Belgium
| | - Martin Skalej
- Institute of Neuroradiology, University Hospital Magdeburg, Magdeburg, Germany
| | - Stefan Mundlos
- Institute for Medical and Human Genetics Charité, Universitätsmedizin Berlin and Max Planck Institute for Molecular Genetics Berlin, Berlin, Germany
| | - Wim Wuyts
- Department of Medical Genetics, Antwerp University Hospital, Antwerp, Belgium.,Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - Laura Southgate
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Division of Genetics and Molecular Medicine, King's College London, London, UK
| | - Martin Zenker
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
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Lehman A, Stittrich AB, Glusman G, Zong Z, Li H, Eydoux P, Senger C, Lyons C, Roach JC, Patel M. Diffuse angiopathy in Adams-Oliver syndrome associated with truncating DOCK6 mutations. Am J Med Genet A 2014; 164A:2656-62. [PMID: 25091416 DOI: 10.1002/ajmg.a.36685] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 06/18/2014] [Indexed: 11/11/2022]
Abstract
Adams-Oliver syndrome (AOS) is a rare malformation syndrome characterized by the presence of two anomalies: aplasia cutis congenita of the scalp and transverse terminal limb defects. Many affected individuals also have additional malformations, including a variety of intracranial anomalies such as periventricular calcification in keeping with cerebrovascular microbleeds, impaired neuronal migration, epilepsy, and microcephaly. Cardiac malformations can be present, as can vascular dysfunction in the forms of cutis marmorata telangiectasia congenita, pulmonary vein stenoses, and abnormal hepatic microvasculature. Elucidated genetic causes include four genes in different pathways, leading to a model of AOS as a multi-pathway disorder. We identified an infant with mild aplasia cutis congenita and terminal transverse limb defects, developmental delay and a severe, diffuse angiopathy with incomplete microvascularization. Whole-genome sequencing documented two rare truncating variants in DOCK6, a gene associated with a type of autosomal recessive AOS that recurrently features periventricular calcification and impaired neurodevelopment. We highlight an unexpectedly high frequency of likely deleterious mutations in this gene in the general population, relative to the rarity of the disease, and discuss possible explanations for this discrepancy.
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Affiliation(s)
- Anna Lehman
- Department of Medical Genetics and Child and Family Research Institute, University of British Columbia, Vancouver, Canada
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