1
|
Calderón-Colmenero J, Massó F, González-Pacheco H, Sandoval J, Guerrero C, Cervantes-Salazar J, García-Montes JA, Paéz A, Pereira-López GI, Zabal-Cerdeira C, Sandoval JP. Pulmonary arterial hypertension in children with congenital heart disease: a deeper look into the role of endothelial progenitor cells and circulating endothelial cells to assess disease severity. Front Pediatr 2023; 11:1200395. [PMID: 37484769 PMCID: PMC10357291 DOI: 10.3389/fped.2023.1200395] [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: 04/04/2023] [Accepted: 06/26/2023] [Indexed: 07/25/2023] Open
Abstract
Endothelial progenitor cells and circulating endothelial cells have been proposed as useful markers of severity and disease progression in certain vascular diseases, including pulmonary arterial hypertension. Our study focused on evaluating the levels of circulating endothelial progenitor cells and circulating endothelial cells in patients with congenital left-to-right shunts and pulmonary hypertension undergoing definitive repair. Endothelial progenitor cells (identified by simultaneous co-expression of CD45dim, CD34 + and KDR2 + surface antibodies) and circulating endothelial cells (identified by simultaneous co-expression of inherent antibodies CD45-, CD31+, CD146 + and CD105+) were prospectively measured in seventy-four children (including children with Down syndrome), median age six years (2.75-10), with clinically significant left-to-right shunts undergoing transcatheter or surgical repair and compared to thirty healthy controls. Endothelial progenitor cells and, particularly, circulating endothelial cells were significantly higher in children with heart disease and pulmonary arterial hypertension when compared to controls. Endothelial progenitor cells showed significant correlation with pulmonary vascular resistance index when measured both systemically (r = 0.259; p = 0.026) and in the superior vena cava (r = 0.302; p = 0.009). Children with Down syndrome showed a stronger correlation between systemic cellularity and pulmonary vascular resistance index (r = 0.829; p = 0.002). Endothelial progenitor cells were reduced along their transit through the lung, whereas circulating endothelial cells did not suffer any modification across the pulmonary circulation. In children with yet to be repaired left-to-right shunts, endothelial progenitor cells and circulating endothelial cell counts are increased compared to healthy subjects.
Collapse
Affiliation(s)
- Juan Calderón-Colmenero
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Felipe Massó
- Department of Molecular Biology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | | | - Julio Sandoval
- Department of Cardiopulmonary Medicine, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Carlos Guerrero
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Jorge Cervantes-Salazar
- Department of Cardiovascular Surgery in Congenital Heart Disease, Instituto Nacional de Cardiologia Ignacio Chavez, MexicoCity, Mexico
| | - José A. García-Montes
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Araceli Paéz
- Department of Molecular Biology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Gabriela I. Pereira-López
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Carlos Zabal-Cerdeira
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| | - Juan Pablo Sandoval
- Department of Pediatric Cardiology, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico City, Mexico
| |
Collapse
|
2
|
CILHOROZ B, RECENO C, HEFFERNAN K, DERUISSEAU L. Cardiovascular Physiology and Pathophysiology in Down Syndrome. Physiol Res 2022; 71:1-16. [DOI: 10.33549/physiolres.934791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Down Syndrome (Ds) is the most common chromosomal cause of intellectual disability that results from triplication of chromosome 21 genes. Individuals with Ds demonstrate cognitive deficits in addition to comorbidities including cardiac defects, pulmonary arterial hypertension (PAH), low blood pressure (BP), and differences in autonomic regulation. Many individuals with Ds are born with heart malformations and some can be surgically corrected. Lower BP at rest and in response to exercise and other stressors are a prevalent feature in Ds. These reduced cardiovascular responses may be due to underlying autonomic dysfunction and have been implicated in lower exercise/work capacity in Ds, which is an important correlate of morbidity, mortality and quality of life. Exercise therapy can be beneficial to normalize autonomic function and may help prevent the development of co-morbidities in Ds. We will review cardiovascular physiology and pathophysiology in individuals with Ds, along with exercise therapy and special considerations for these individuals.
Collapse
Affiliation(s)
- B CILHOROZ
- Department of Exercise Sciences, Syracuse University, Syracuse, New York, USA
| | - C RECENO
- Department of Exercise Science and Athletic Training, Ithaca, New York, USA
| | - K HEFFERNAN
- Department of Exercise Sciences, Syracuse University, Syracuse, New York, USA
| | - L DERUISSEAU
- Department of Exercise Sciences, Syracuse University, Syracuse, New York, USA
| |
Collapse
|
3
|
De Toma I, Dierssen M. Network analysis of Down syndrome and SARS-CoV-2 identifies risk and protective factors for COVID-19. Sci Rep 2021; 11:1930. [PMID: 33479353 PMCID: PMC7820501 DOI: 10.1038/s41598-021-81451-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022] Open
Abstract
SARS-CoV-2 infection has spread uncontrollably worldwide while it remains unknown how vulnerable populations, such as Down syndrome (DS) individuals are affected by the COVID-19 pandemic. Individuals with DS have more risk of infections with respiratory complications and present signs of auto-inflammation. They also present with multiple comorbidities that are associated with poorer COVID-19 prognosis in the general population. All this might place DS individuals at higher risk of SARS-CoV-2 infection or poorer clinical outcomes. In order to get insight into the interplay between DS genes and SARS-cov2 infection and pathogenesis we identified the genes associated with the molecular pathways involved in COVID-19 and the host proteins interacting with viral proteins from SARS-CoV-2. We then analyzed the overlaps of these genes with HSA21 genes, HSA21 interactors and other genes consistently differentially expressed in DS (using public transcriptomic datasets) and created a DS-SARS-CoV-2 network. We detected COVID-19 protective and risk factors among HSA21 genes and interactors and/or DS deregulated genes that might affect the susceptibility of individuals with DS both at the infection stage and in the progression to acute respiratory distress syndrome. Our analysis suggests that at the infection stage DS individuals might be more susceptible to infection due to triplication of TMPRSS2, that primes the viral S protein for entry in the host cells. However, as the anti-viral interferon I signaling is also upregulated in DS, this might increase the initial anti-viral response, inhibiting viral genome release, viral replication and viral assembly. In the second pro-inflammatory immunopathogenic phase of the infection, the prognosis for DS patients might worsen due to upregulation of inflammatory genes that might favor the typical cytokine storm of COVID-19. We also detected strong downregulation of the NLRP3 gene, critical for maintenance of homeostasis against pathogenic infections, possibly leading to bacterial infection complications.
Collapse
Affiliation(s)
- Ilario De Toma
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.
| | - Mara Dierssen
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.
- Universitat Pompeu Fabra (UPF), Barcelona, Spain.
- Biomedical Research Networking Center On Rare Diseases (CIBERER), Institute of Health Carlos III, Madrid, Spain.
| |
Collapse
|
4
|
Down syndrome iPSC model: endothelial perspective on tumor development. Oncotarget 2020; 11:3387-3404. [PMID: 32934781 PMCID: PMC7486695 DOI: 10.18632/oncotarget.27712] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 08/01/2020] [Indexed: 12/12/2022] Open
Abstract
Trisomy 21 (T21), known as Down syndrome (DS), is a widely studied chromosomal abnormality. Previous studies have shown that DS individuals have a unique cancer profile. While exhibiting low solid tumor prevalence, DS patients are at risk for hematologic cancers, such as acute megakaryocytic leukemia and acute lymphoblastic leukemia. We speculated that endothelial cells are active players in this clinical background. To this end, we hypothesized that impaired DS endothelial development and functionality, impacted by genome-wide T21 alterations, potentially results in a suboptimal endothelial microenvironment with the capability to prevent solid tumor growth. To test this hypothesis, we assessed molecular and phenotypic differences of endothelial cells differentiated from Down syndrome and euploid iPS cells. Microarray, RNA-Seq, and bioinformatic analyses revealed that most significantly expressed genes belong to angiogenic, cytoskeletal rearrangement, extracellular matrix remodeling, and inflammatory pathways. Interestingly, the majority of these genes are not located on Chromosome 21. To substantiate these findings, we carried out functional assays. The obtained phenotypic results correlated with the molecular data and showed that Down syndrome endothelial cells exhibit decreased proliferation, reduced migration, and a weak TNF-α inflammatory response. Based on this data, we provide a set of genes potentially associated with Down syndrome’s elevated leukemic incidence and its unfavorable solid tumor microenvironment—highlighting the potential use of these genes as therapeutic targets in translational cancer research.
Collapse
|
5
|
Galat Y, Perepitchka M, Elcheva I, Iannaccone S, Iannaccone PM, Galat V. iPSC-derived progenitor stromal cells provide new insights into aberrant musculoskeletal development and resistance to cancer in down syndrome. Sci Rep 2020; 10:13252. [PMID: 32764607 PMCID: PMC7414019 DOI: 10.1038/s41598-020-69418-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 07/06/2020] [Indexed: 12/13/2022] Open
Abstract
Down syndrome (DS) is a congenital disorder caused by trisomy 21 (T21). It is associated with cognitive impairment, muscle hypotonia, heart defects, and other clinical anomalies. At the same time, individuals with Down syndrome have lower prevalence of solid tumor formation. To gain new insights into aberrant DS development during early stages of mesoderm formation and its possible connection to lower solid tumor prevalence, we developed the first model of two types of DS iPSC-derived stromal cells. Utilizing bioinformatic and functional analyses, we identified over 100 genes with coordinated expression among mesodermal and endothelial cell types. The most significantly down-regulated processes in DS mesodermal progenitors were associated with decreased stromal progenitor performance related to connective tissue organization as well as muscle development and functionality. The differentially expressed genes included cytoskeleton-related genes (actin and myosin), ECM genes (Collagens, Galectin-1, Fibronectin, Heparan Sulfate, LOX, FAK1), cell cycle genes (USP16, S1P complexes), and DNA damage repair genes. For DS endothelial cells, our analysis revealed most down-regulated genes associated with cellular response to external stimuli, cell migration, and immune response (inflammation-based). Together with functional assays, these results suggest an impairment in mesodermal development capacity during early stages, which likely translates into connective tissue impairment in DS patients. We further determined that, despite differences in functional processes and characteristics, a significant number of differentially regulated genes involved in tumorigenesis were expressed in a highly coordinated manner across endothelial and mesodermal cells. These findings strongly suggest that microRNAs (miR-24-4, miR-21), cytoskeleton remodeling, response to stimuli, and inflammation can impact resistance to tumorigenesis in DS patients. Furthermore, we also show that endothelial cell functionality is impaired, and when combined with angiogenic inhibition, it can provide another mechanism for decreased solid tumor development. We propose that the same processes, which specify the basis of connective tissue impairment observed in DS patients, potentially impart a resistance to cancer by hindering tumor progression and metastasis. We further establish that cancer-related genes on Chromosome 21 are up-regulated, while genome-wide cancer-related genes are down-regulated. These results suggest that trisomy 21 induces a modified regulation and compensation of many biochemical pathways across the genome. Such downstream interactions may contribute toward promoting tumor resistant mechanisms.
Collapse
Affiliation(s)
- Yekaterina Galat
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA.
- Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Mariana Perepitchka
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA.
| | - Irina Elcheva
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA
- Pediatrics, Division of Hematology and Oncology, Penn State Hershey College of Medicine, Hershey, PA, USA
| | - Stephen Iannaccone
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA
| | - Philip M Iannaccone
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA
- Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Vasiliy Galat
- Developmental Biology Program, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA.
- Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
- ARTEC Biotech Inc, Chicago, IL, USA.
| |
Collapse
|
6
|
Applications of Genome Editing Technology in Research on Chromosome Aneuploidy Disorders. Cells 2020; 9:cells9010239. [PMID: 31963583 PMCID: PMC7016705 DOI: 10.3390/cells9010239] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 12/24/2022] Open
Abstract
Chromosomal segregation errors in germ cells and early embryonic development underlie aneuploidies, which are numerical chromosomal abnormalities causing fetal absorption, developmental anomalies, and carcinogenesis. It has been considered that human aneuploidy disorders cannot be resolved by radical treatment. However, recent studies have demonstrated that aneuploidies can be rescued to a normal diploid state using genetic engineering in cultured cells. Here, we summarize a series of studies mainly applying genome editing to eliminate an extra copy of human chromosome 21, the cause of the most common constitutional aneuploidy disorder Down syndrome. We also present findings on induced pluripotent stem cell reprogramming, which has been shown to be one of the most promising technologies for converting aneuploidies into normal diploidy without the risk of genetic alterations such as genome editing-mediated off-target effects.
Collapse
|
7
|
Prenatal circulating microRNA signatures of foetal Down syndrome. Sci Rep 2019; 9:2394. [PMID: 30787377 PMCID: PMC6382869 DOI: 10.1038/s41598-018-35876-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 10/02/2018] [Indexed: 12/14/2022] Open
Abstract
The altered expression pattern of miRNAs might potentially reflect anomalies related to foetal chromosomal aberrations. The aim of the study was to determine the expression level of miRNAs in plasma of pregnant women with foetal Down syndrome (DS). Out of 198 amniocentesis performed at 15-18 weeks of gestation, within a group of 12 patients with foetal DS and 12 patients with uncomplicated pregnancies, who delivered healthy newborns at term, we examined the expression level of 800 miRNAs using the NanoString technology. Our study revealed that there are 6 miRNAs were upregulated (hsa-miR-15a, hsa-let-7d, hsa-miR-142, hsa-miR-23a, hsa-miR-199, hsa-miR-191) and 7 were downregulated (hsa-miR-1290, hsa-miR-1915, hsa-miR30e, hsa-miR-1260, hsa-miR-483, hsa-miR-548, hsa-miR-590) in plasma samples of women with foetal DS syndrome. The genes regulated by identified miRNAs are involved in central nervous system development, congenital abnormalities and heart defects. The results of the present study yielded information on DS-specific miRNA expression signature, which can further help to design a panel of miRNAs as a non-invasive test for DS diagnosis. We believe that identified miRNAs may attend in the pathogenesis of DS and would potentially make a significant role for the future preventive therapies.
Collapse
|
8
|
Zbucka-Kretowska M, Charkiewicz K, Goscik J, Wolczynski S, Laudanski P. Maternal plasma angiogenic and inflammatory factor profiling in foetal Down syndrome. PLoS One 2017; 12:e0189762. [PMID: 29244857 PMCID: PMC5731759 DOI: 10.1371/journal.pone.0189762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 12/03/2017] [Indexed: 12/14/2022] Open
Abstract
Objective and design Angiogenic factors are proteins that are related to certain foetal chromosomal abnormalities. The aim of this study was to determine the concentration of 60 angiogenic factors in the plasma of women with offspring possessing trisomy 21/Down syndrome (DS). Method After analysing karyotyping results, we selected 20 patients with foetuses possessing DS, and for the control group, we selected 28 healthy patients with uncomplicated pregnancies who delivered healthy newborns at term (i.e., 15–18 weeks of gestation). To assess the concentration of proteins in the blood plasma, we used a protein macroarray which enabled simultaneous determination of 60 angiogenic factors per sample. Results We observed a statistically significant increase in the concentration of these five angiogenic and inflammatory factors: TGFb1 (p = 0.039), angiostatin (p = 0.0142), I-309 (p = 0.0476), TGFb3 (p = 0.0395), and VEGF-D (p = 0.0173)—compared to concentrations in patients with healthy foetuses. Conclusion Our findings suggest that angiogenic factors may play role in DS pathogenesis.
Collapse
Affiliation(s)
- Monika Zbucka-Kretowska
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Karol Charkiewicz
- Department of Perinatology and Obstetrics, Medical University of Bialystok, Bialystok, Poland
| | - Joanna Goscik
- Faculty of Computer Science, Bialystok University of Technology, Bialystok, Poland
| | - Slawomir Wolczynski
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Bialystok, Poland
| | - Piotr Laudanski
- Department of Perinatology and Obstetrics, Medical University of Bialystok, Bialystok, Poland
- * E-mail:
| |
Collapse
|
9
|
Efficacy and safety of oral sildenafil in children with Down syndrome and pulmonary hypertension. BMC Cardiovasc Disord 2017; 17:177. [PMID: 28676038 PMCID: PMC5496590 DOI: 10.1186/s12872-017-0569-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 05/15/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Despite the increased risk for pulmonary hypertension in children with Down syndrome, the response to treatment with targeted therapies for pulmonary hypertension in these patients is not well characterized. The Sildenafil in Treatment-naive children, Aged 1-17 years, with pulmonary arterial hypertension (STARTS-1) trial was a dose-ranging study of the short-term efficacy and safety of oral sildenafil in children with pulmonary arterial hypertension. We assessed the safety and efficacy of oral sildenafil in children with Down syndrome and pulmonary arterial hypertension. METHODS This was a post-hoc analysis of children with Down syndrome and pulmonary arterial hypertension enrolled in the STARTS-1 trial. Mean pulmonary arterial pressure (mPAP), pulmonary vascular resistance index (PVRI), and cardiac index (CI) were assessed at baseline and following 16 weeks of treatment with sildenafil. RESULTS Of 234 patients randomized and treated in the STARTS-1 trial, 48 (20.5%) had Down syndrome. Although sildenafil produced dose-related reductions in PVRI and mPAP, compared with placebo, in non-Down syndrome patients and children developmentally able to exercise, this was not satisfactorily marked in patients with Down syndrome. The dose-related reductions in PVRI, compared with placebo, occurred in all subgroups, with the exception of the Down syndrome subgroup. Sildenafil appeared to be well tolerated in the Down syndrome subpopulation and the most frequently reported AEs were similar to those reported for the entire STARTS-1 population. CONCLUSION Sildenafil treatment for 16 weeks had no effect on PVRI or mPAP in children with Down syndrome and pulmonary arterial hypertension. The results suggest that children with Down syndrome may be less responsive to sildenafil for pulmonary arterial hypertension, but the incomplete work-up for the etiology of pulmonary arterial hypertension may have introduced a potential bias. TRIAL REGISTRATION Study received, September 8, 2005 (retrospectively registered); Study start, August 2003; ClinicalTrials.gov identifier, NCT00159913 .
Collapse
|
10
|
La Placa S, Pinello G, Schierz IAM, Giuffrè M, Corsello G. Coronary Artery Fistula in Down Syndrome: A Hidden Association. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2017; 36:1282-1283. [PMID: 28240784 DOI: 10.7863/ultra.16.08019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Simona La Placa
- Neonatal Intensive Care Unit, AOUP, Department of Sciences for Health Promotion and Mother and Child Care, University of Palermo, Palermo, Italy
| | - Giuseppa Pinello
- Neonatal Intensive Care Unit, AOUP, Department of Sciences for Health Promotion and Mother and Child Care, University of Palermo, Palermo, Italy
| | - Ingrid Anne Mandy Schierz
- Neonatal Intensive Care Unit, AOUP, Department of Sciences for Health Promotion and Mother and Child Care, University of Palermo, Palermo, Italy
| | - Mario Giuffrè
- Neonatal Intensive Care Unit, AOUP, Department of Sciences for Health Promotion and Mother and Child Care, University of Palermo, Palermo, Italy
| | - Giovanni Corsello
- Neonatal Intensive Care Unit, AOUP, Department of Sciences for Health Promotion and Mother and Child Care, University of Palermo, Palermo, Italy
| |
Collapse
|
11
|
Picascia A, Pagliuca C, Sommese L, Colicchio R, Casamassimi A, Labonia F, Pastore G, Pagliarulo C, Cicatiello AG, Castaldo F, Schiano C, Maiello C, Mezza E, D'Armiento FP, Salvatore P, Napoli C. Seroprevalence of Bartonella henselae in patients awaiting heart transplant in Southern Italy. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2017; 50:239-244. [PMID: 26051222 DOI: 10.1016/j.jmii.2015.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 04/13/2015] [Accepted: 05/05/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Bartonella henselae is the etiologic agent of cat-scratch disease. B. henselae infections are responsible for a widening spectrum of human diseases, although often symptomless, ranging from self-limited to life-threatening and show different courses and organ involvement due to the balance between host and pathogen. The role of the host immune response to B. henselae is critical in preventing progression to systemic disease. Indeed in immunocompromised patients, such as solid organ transplant patients, B. henselae results in severe disseminated disease and pathologic vasoproliferation. The purpose of this study was to determine the seroprevalence of B. henselae in patients awaiting heart transplant compared to healthy individuals enrolled in the Regional Reference Laboratory of Transplant Immunology of Second University of Naples. METHODS Serum samples of 38 patients awaiting heart transplant in comparison to 50 healthy donors were examined using immunfluorescence assay. RESULTS We found a B. henselae significant antibody positivity rate of 21% in patients awaiting heart transplant (p = 0.002). There was a positive rate of 8% (p > 0.05) for immunoglobulin (Ig)M and a significant value of 13% (p = 0.02) for IgG, whereas controls were negative both for IgM and IgG antibodies against B. henselae. The differences in comorbidity between cases and controls were statistically different (1.41 ± 0.96 vs 0.42 ± 0.32; p = 0.001). CONCLUSIONS Although this study was conducted in a small number of patients, we suggest that the identification of these bacteria should be included as a routine screening analysis in pretransplant patients.
Collapse
Affiliation(s)
- Antonietta Picascia
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School, Naples, Italy; U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology, Regional Reference Laboratory of Transplant Immunology, Azienda Ospedaliera Universitaria, Second University of Naples, Naples, Italy.
| | - Chiara Pagliuca
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School, Naples, Italy; Department of Integrated Activities of Laboratory Medicine, Federico II University Medical School, Naples, Italy
| | - Linda Sommese
- U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology, Regional Reference Laboratory of Transplant Immunology, Azienda Ospedaliera Universitaria, Second University of Naples, Naples, Italy
| | - Roberta Colicchio
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School, Naples, Italy; Institute of Diagnostic and Nuclear Development (SDN), Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS), Naples, Italy
| | - Amelia Casamassimi
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Francesco Labonia
- Department of Integrated Activities of Laboratory Medicine, Federico II University Medical School, Naples, Italy
| | - Gabiria Pastore
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Caterina Pagliarulo
- Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | | | - Francesco Castaldo
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School, Naples, Italy
| | - Concetta Schiano
- Institute of Diagnostic and Nuclear Development (SDN), Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS), Naples, Italy
| | - Ciro Maiello
- Department of Cardiothoracic Sciences, Monaldi Hospital, Second University of Naples, Naples, Italy
| | - Ernesto Mezza
- Department of Advanced Biomedical Sciences, Section of Pathology, Federico II University Medical School, Naples, Italy
| | - Francesco Paolo D'Armiento
- Department of Advanced Biomedical Sciences, Section of Pathology, Federico II University Medical School, Naples, Italy
| | - Paola Salvatore
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School, Naples, Italy
| | - Claudio Napoli
- U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology, Regional Reference Laboratory of Transplant Immunology, Azienda Ospedaliera Universitaria, Second University of Naples, Naples, Italy; Institute of Diagnostic and Nuclear Development (SDN), Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS), Naples, Italy
| |
Collapse
|
12
|
Pagliuca C, Cicatiello AG, Colicchio R, Greco A, Cerciello R, Auletta L, Albanese S, Scaglione E, Pagliarulo C, Pastore G, Mansueto G, Brunetti A, Avallone B, Salvatore P. Novel Approach for Evaluation of Bacteroides fragilis Protective Role against Bartonella henselae Liver Damage in Immunocompromised Murine Model. Front Microbiol 2016; 7:1750. [PMID: 27872616 PMCID: PMC5097911 DOI: 10.3389/fmicb.2016.01750] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/19/2016] [Indexed: 12/12/2022] Open
Abstract
Bartonella henselae is a gram-negative facultative intracellular bacterium and is the causative agent of cat-scratch disease. Our previous data have established that Bacteroides fragilis colonization is able to prevent B. henselae damages through the polysaccharide A (PSA) in an experimental murine model. In order to determine whether the PSA is essential for the protection against pathogenic effects of B. henselae in immunocompromised hosts, SCID mice were co-infected with B. fragilis wild type or its mutant B. fragilis ΔPSA and the effects of infection on murine tissues have been observed by High-Frequency Ultrasound (HFUS), histopathological examination, and Transmission Electron Microscopy (TEM). For the first time, echostructure, hepatic lobes length, vascular alterations, and indirect signs of hepatic dysfunctions, routinely used as signs of disease in humans, have been analyzed in an immunocompromised murine model. Our findings showed echostructural alterations in all infected mice compared with the Phosphate Buffer Solution (PBS) control group; further, those infected with B. henselae and co-infected with B. henselae/B. fragilis ΔPSA presented the major echostructural alterations. Half of the mice infected with B. henselae and all those co-infected with B. henselae/B. fragilis ΔPSA have showed an altered hepatic echogenicity compared with the renal cortex. The echogenicity score of co-infected mice with B. henselae/B. fragilis ΔPSA differed significantly compared with the PBS control group (p < 0.05). Moreover the inflammation score of the histopathological evaluation was fairly concordant with ultrasound findings. Ultrastructural analysis performed by TEM revealed no significant alterations in liver samples of SCID mice infected with B. fragilis wild type while those infected with B. fragilis ΔPSA showed the presence of collagen around the main vessels compared with the PBS control group. The liver samples of mice infected with B. henselae showed macro-areas rich in collagen, stellate cells, and histiocytic cells. Interestingly, our data demonstrated that immunocompromised SCID mice infected with B. henselae and co-infected with B. henselae/B. fragilis ΔPSA showed the most severe morpho-structural liver damage. In addition, these results suggests that the HFUS together with histopathological evaluation could be considered good imaging approach to evaluate hepatic alterations.
Collapse
Affiliation(s)
- Chiara Pagliuca
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical SchoolNaples, Italy; CEINGE-Advanced BiotechnologiesNaples, Italy
| | - Annunziata G Cicatiello
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School Naples, Italy
| | - Roberta Colicchio
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School Naples, Italy
| | - Adelaide Greco
- CEINGE-Advanced BiotechnologiesNaples, Italy; Department of Advanced Biomedical Science, Federico II University Medical SchoolNaples, Italy; Institute of Biostructure and Bioimaging, National Research CouncilNaples, Italy
| | | | | | - Sandra Albanese
- CEINGE-Advanced BiotechnologiesNaples, Italy; Department of Advanced Biomedical Science, Federico II University Medical SchoolNaples, Italy
| | - Elena Scaglione
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical School Naples, Italy
| | - Caterina Pagliarulo
- Department of Sciences and Technologies, University of Sannio Benevento, Italy
| | - Gabiria Pastore
- Department of Sciences and Technologies, University of Sannio Benevento, Italy
| | - Gelsomina Mansueto
- Department of Advanced Biomedical Science, Federico II University Medical School Naples, Italy
| | - Arturo Brunetti
- CEINGE-Advanced BiotechnologiesNaples, Italy; Department of Advanced Biomedical Science, Federico II University Medical SchoolNaples, Italy; Institute of Biostructure and Bioimaging, National Research CouncilNaples, Italy
| | - Bice Avallone
- Department of Biology, University of Naples Federico II Naples, Italy
| | - Paola Salvatore
- Department of Molecular Medicine and Medical Biotechnology, Federico II University Medical SchoolNaples, Italy; CEINGE-Advanced BiotechnologiesNaples, Italy
| |
Collapse
|
13
|
Brief Communication: Maternal Plasma Autoantibodies Screening in Fetal Down Syndrome. J Immunol Res 2016; 2016:9362169. [PMID: 27042674 PMCID: PMC4799815 DOI: 10.1155/2016/9362169] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 01/14/2016] [Accepted: 01/27/2016] [Indexed: 11/17/2022] Open
Abstract
Imbalance in the metabolites levels which can potentially be related to certain fetal chromosomal abnormalities can stimulate mother's immune response to produce autoantibodies directed against proteins. The aim of the study was to determine the concentration of 9000 autoantibodies in maternal plasma to detect fetal Down syndrome. Method. We performed 190 amniocenteses and found 10 patients with confirmed fetal Down syndrome (15th–18th weeks of gestation). For the purpose of our control we chose 11 women without confirmed chromosomal aberration. To assess the expression of autoantibodies in the blood plasma, we used a protein microarray, which allows for simultaneous determination of 9000 proteins per sample. Results. We revealed 213 statistically significant autoantibodies, whose expression decreased or increased in the study group with fetal Down syndrome. The second step was to create a classifier of Down syndrome pregnancy, which includes 14 antibodies. The predictive value of the classifier (specificity and sensitivity) is 100%, classification errors, 0%, cross-validation errors, 0%. Conclusion. Our findings suggest that the autoantibodies may play a role in the pathophysiology of Down syndrome pregnancy. Defining their potential as biochemical markers of Down syndrome pregnancy requires further investigation on larger group of patients.
Collapse
|
14
|
Salvatore P, Zullo A, Sommese L, Colicchio R, Picascia A, Schiano C, Mancini FP, Napoli C. Infections and cardiovascular disease: is Bartonella henselae contributing to this matter? J Med Microbiol 2015; 64:799-809. [PMID: 26066633 DOI: 10.1099/jmm.0.000099] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Cardiovascular disease is still the major cause of death worldwide despite the remarkable progress in its prevention and treatment. Endothelial progenitor cells (EPCs) have recently emerged as key players of vascular repair and regenerative medicine applied to cardiovascular disease. A large amount of effort has been put into discovering the factors that could aid or impair the number and function of EPCs, and also into characterizing these cells at the molecular level in order to facilitate their therapeutic applications in vascular disease. Interestingly, the major cardiovascular risk factors have been associated with reduced number and function of EPCs. The bacterial contribution to cardiovascular disease represents a long-standing controversy. The discovery that Bartonella henselae can infect and damage EPCs revitalizes the enduring debate about the microbiological contribution to atherosclerosis, thus allowing the hypothesis that this infection could impair the cardiovascular regenerative potential and increase the risk for cardiovascular disease. In this review, we summarize the rationale suggesting that Bartonella henselae could favour atherogenesis by infecting and damaging EPCs, thus reducing their vascular repair potential. These mechanisms suggest a novel link between communicable and non-communicable human diseases, and put forward the possibility that Bartonella henselae could enhance the susceptibility and worsen the prognosis in cardiovascular disease.
Collapse
Affiliation(s)
- Paola Salvatore
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, Naples, Italy.,CEINGE-Advanced Biotechnologies, Naples, Italy
| | - Alberto Zullo
- CEINGE-Advanced Biotechnologies, Naples, Italy.,Department of Sciences and Technologies, University of Sannio, Benevento, Italy
| | - Linda Sommese
- U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology [SIMT], Regional Reference Laboratory of Transplant Immunology [LIT], Azienda Universitaria Policlinico (AOU) and Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Department of Experimental Medicine, Section of Microbiology, Second University of Naples, Naples, Italy
| | - Roberta Colicchio
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, Naples, Italy
| | - Antonietta Picascia
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, Naples, Italy.,U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology [SIMT], Regional Reference Laboratory of Transplant Immunology [LIT], Azienda Universitaria Policlinico (AOU) and Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Concetta Schiano
- Foundation SDN, Institute of Diagnostic and Nuclear Development, IRCCS, Naples, Italy
| | | | - Claudio Napoli
- U.O.C. Division of Immunohematology, Transfusion Medicine and Transplant Immunology [SIMT], Regional Reference Laboratory of Transplant Immunology [LIT], Azienda Universitaria Policlinico (AOU) and Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy.,Foundation SDN, Institute of Diagnostic and Nuclear Development, IRCCS, Naples, Italy
| |
Collapse
|
15
|
Charkiewicz K, Blachnio-Zabielska A, Zbucka-Kretowska M, Wolczynski S, Laudanski P. Maternal plasma and amniotic fluid sphingolipids profiling in fetal Down syndrome. PLoS One 2015; 10:e0127732. [PMID: 26000716 PMCID: PMC4441425 DOI: 10.1371/journal.pone.0127732] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 04/20/2015] [Indexed: 01/03/2023] Open
Abstract
Introduction Sphingolipids can be potentially involved in the formation of the central and peripheral nervous systems, which are particularly connected with the pathogenesis of Down syndrome. The aim of the study was to determine the concentration of selected sphingolipids in the plasma and amniotic fluid of pregnant patients with fetal Down syndrome. Material and Methods Out of 190 amniocentesis we had 10 patients with confirmed Down syndrome. For the purpose of our control we chose 14 women without confirmed chromosomal aberration. To assess the concentration of 11 sphingolipids in the blood plasma and amniotic fluid we used an ultra-high performance liquid chromatography coupled with triple quadrupole mass spectrometry (UHPLC/MS/MS). Results We showed a significant increase in the concentration of 2 ceramides, C22-Cer and C24:1-Cer, in the plasma of women with fetal Down syndrome. Furthermore we showed a decrease in the concentration of 7 ceramides—C16-Cer, C18-Cer, C18:1-Cer, C20-Cer, C22-Cer, C24:1-Cer, and C24-Cer—in the amniotic fluid of women with fetal Down syndrome. We created ROC curves for all significant sphingolipids in maternal plasma, which set the threshold values and allowed for predicting the likelihood of Down syndrome in the fetus with specific sensitivity and specificity. We demonstrated a significantly higher risk of Down syndrome when the plasma concentration of C22-Cer > 12.66 ng/100ul (sens. 0.9, sp. 0.79, P value = 0.0007) and C24:1-Cer > 33,19 ng/100ul (sens. 0.6, sp. 0.86, P value = 0.0194). Conclusion On the basis of our findings, it seems that the sphingolipids may play a role in the pathogenesis of Down syndrome. Defining their potential as biochemical markers of Down syndrome requires further investigation on a larger group of patients.
Collapse
Affiliation(s)
- Karol Charkiewicz
- Department of Perinatology and Obstetrics, Medical University of Bialystok, Marii Sklodowskiej-Curie 24a, Bialystok, 15-276, Poland
| | | | - Monika Zbucka-Kretowska
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Marii Sklodowskiej Curie 24a, Bialystok, 15-273, Poland
| | - Slawomir Wolczynski
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Marii Sklodowskiej Curie 24a, Bialystok, 15-273, Poland
| | - Piotr Laudanski
- Department of Perinatology and Obstetrics, Medical University of Bialystok, Marii Sklodowskiej-Curie 24a, Bialystok, 15-276, Poland
| |
Collapse
|
16
|
Novel transcription factor variants through RNA-sequencing: the importance of being "alternative". Int J Mol Sci 2015; 16:1755-71. [PMID: 25590302 PMCID: PMC4307332 DOI: 10.3390/ijms16011755] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/26/2014] [Indexed: 12/22/2022] Open
Abstract
Alternative splicing is a pervasive mechanism of RNA maturation in higher eukaryotes, which increases proteomic diversity and biological complexity. It has a key regulatory role in several physiological and pathological states. The diffusion of Next Generation Sequencing, particularly of RNA-Sequencing, has exponentially empowered the identification of novel transcripts revealing that more than 95% of human genes undergo alternative splicing. The highest rate of alternative splicing occurs in transcription factors encoding genes, mostly in Krüppel-associated box domains of zinc finger proteins. Since these molecules are responsible for gene expression, alternative splicing is a crucial mechanism to "regulate the regulators". Indeed, different transcription factors isoforms may have different or even opposite functions. In this work, through a targeted re-analysis of our previously published RNA-Sequencing datasets, we identified nine novel transcripts in seven transcription factors genes. In silico analysis, combined with RT-PCR, cloning and Sanger sequencing, allowed us to experimentally validate these new variants. Through computational approaches we also predicted their novel structural and functional properties. Our findings indicate that alternative splicing is a major determinant of transcription factor diversity, confirming that accurate analysis of RNA-Sequencing data can reliably lead to the identification of novel transcripts, with potentially new functions.
Collapse
|
17
|
Maternal plasma and amniotic fluid chemokines screening in fetal Down syndrome. Mediators Inflamm 2014; 2014:835837. [PMID: 25477715 PMCID: PMC4248337 DOI: 10.1155/2014/835837] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 10/23/2014] [Indexed: 12/29/2022] Open
Abstract
Objective. Chemokines exert different inflammatory responses which can potentially be related to certain fetal chromosomal abnormalities. The aim of the study was to determine the concentration of selected chemokines in plasma and amniotic fluid of women with fetal Down syndrome. Method. Out of 171 amniocentesis, we had 7 patients with confirmed fetal Down syndrome (15th–18th weeks of gestation). For the purpose of our control, we chose 14 women without confirmed chromosomal aberration. To assess the concentration of chemokines in the blood plasma and amniotic fluid, we used a protein macroarray, which allows the simultaneous determination of 40 chemokines per sample. Results. We showed significant decrease in the concentration of 4 chemokines, HCC-4, IL-28A, IL-31, and MCP-2, and increase in the concentration of CXCL7 (NAP-2) in plasma of women with fetal Down syndrome. Furthermore, we showed decrease in concentration of 3 chemokines, ITAC, MCP-3, MIF, and increase in concentration of 4 chemokines, IP-10, MPIF-1, CXCL7, and 6Ckine, in amniotic fluid of women with fetal Down syndrome. Conclusion. On the basis of our findings, our hypothesis is that the chemokines may play role in the pathogenesis of Down syndrome. Defining their potential as biochemical markers of Down syndrome requires further investigation on larger group of patients.
Collapse
|
18
|
PPARG in Human Adipogenesis: Differential Contribution of Canonical Transcripts and Dominant Negative Isoforms. PPAR Res 2014; 2014:537865. [PMID: 24790595 PMCID: PMC3981527 DOI: 10.1155/2014/537865] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 02/03/2014] [Accepted: 02/05/2014] [Indexed: 12/30/2022] Open
Abstract
The nuclear receptor PPARγ is a key regulator of adipogenesis, and alterations of its function are associated with different pathological processes related to metabolic syndrome. We recently identified two PPARG transcripts encoding dominant negative PPARγ isoforms. The existence of different PPARG variants suggests that alternative splicing is crucial to modulate PPARγ function, underlying some underestimated aspects of its regulation. Here we investigate PPARG expression in different tissues and cells affected in metabolic syndrome and, in particular, during adipocyte differentiation of human mesenchymal stem cells. We defined the transcript-specific expression pattern of PPARG variants encoding both canonical and dominant negative isoforms and identified a novel PPARG transcript, γ1ORF4. Our analysis indicated that, during adipogenesis, the transcription of alternative PPARG variants is regulated in a time-specific manner through differential usage of distinct promoters. In addition, our analysis describes—for the first time—the differential contribution of three ORF4 variants to this process, suggesting a still unexplored role for these dominant negative isoforms during adipogenesis. Therefore, our results highlight crucial aspects of PPARG regulation, suggesting the need of further investigation to rule out the differential impact of all PPARG transcripts in both physiologic and pathologic conditions, such as metabolism-related disorders.
Collapse
|
19
|
Sommese L, Vasco M, Costa D, Napoli C. Endothelial progenitor cells and human diseases. Ann Hematol 2013; 93:533-4. [PMID: 23832236 DOI: 10.1007/s00277-013-1840-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 06/26/2013] [Indexed: 11/26/2022]
Affiliation(s)
- Linda Sommese
- U.O.C. Immunohematology, Transfusion Medicine and Transplant Immunology (SIMT), Regional Reference Laboratory of Transplant Immunology (LIT), Azienda Universitaria Policlinico (AOU), Second University of Naples, Naples, Italy,
| | | | | | | |
Collapse
|
20
|
Granese B, Scala I, Spatuzza C, Valentino A, Coletta M, Vacca RA, De Luca P, Andria G. Validation of microarray data in human lymphoblasts shows a role of the ubiquitin-proteasome system and NF-kB in the pathogenesis of Down syndrome. BMC Med Genomics 2013; 6:24. [PMID: 23830204 PMCID: PMC3717290 DOI: 10.1186/1755-8794-6-24] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 06/29/2013] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Down syndrome (DS) is a complex disorder caused by the trisomy of either the entire, or a critical region of chromosome 21 (21q22.1-22.3). Despite representing the most common cause of mental retardation, the molecular bases of the syndrome are still largely unknown. METHODS To better understand the pathogenesis of DS, we analyzed the genome-wide transcription profiles of lymphoblastoid cell lines (LCLs) from six DS and six euploid individuals and investigated differential gene expression and pathway deregulation associated with trisomy 21. Connectivity map and PASS-assisted exploration were used to identify compounds whose molecular signatures counteracted those of DS lymphoblasts and to predict their therapeutic potential. An experimental validation in DS LCLs and fetal fibroblasts was performed for the most deregulated GO categories, i.e. the ubiquitin mediated proteolysis and the NF-kB cascade. RESULTS We show, for the first time, that the level of protein ubiquitination is reduced in human DS cell lines and that proteasome activity is increased in both basal conditions and oxidative microenvironment. We also provide the first evidence that NF-kB transcription levels, a paradigm of gene expression control by ubiquitin-mediated degradation, is impaired in DS due to reduced IkB-alfa ubiquitination, increased NF-kB inhibitor (IkB-alfa) and reduced p65 nuclear fraction. Finally, the DSCR1/DYRK1A/NFAT genes were analysed. In human DS LCLs, we confirmed the presence of increased protein levels of DSCR1 and DYRK1A, and showed that the levels of the transcription factor NFATc2 were decreased in DS along with a reduction of its nuclear translocation upon induction of calcium fluxes. CONCLUSIONS The present work offers new perspectives to better understand the pathogenesis of DS and suggests a rationale for innovative approaches to treat some pathological conditions associated to DS.
Collapse
Affiliation(s)
- Barbara Granese
- Department of Pediatrics, Federico II University, Naples 80131, Italy
| | - Iris Scala
- Department of Pediatrics, Federico II University, Naples 80131, Italy
| | - Carmen Spatuzza
- Department of Biotechnological Sciences, Federico II University, Naples 80131, Italy
| | - Anna Valentino
- Department of Pediatrics, Federico II University, Naples 80131, Italy
| | - Marcella Coletta
- Department of Pediatrics, Federico II University, Naples 80131, Italy
| | - Rosa Anna Vacca
- Institute of Biomembranes and Bioenergetics, National Council of Research, Bari 70126, Italy
| | - Pasquale De Luca
- Stazione Zoologica “A. Dohrn”, c/o BioGeM, Via Camporeale, Ariano Irpino 83031, Italy
| | - Generoso Andria
- Department of Pediatrics, Federico II University, Naples 80131, Italy
| |
Collapse
|
21
|
Malt EA, Dahl RC, Haugsand TM, Ulvestad IH, Emilsen NM, Hansen B, Cardenas YEG, Skøld RO, Thorsen ATB, Davidsen EMM. Helse og sykdom hos voksne med Downs syndrom. TIDSSKRIFT FOR DEN NORSKE LEGEFORENING 2013; 133:290-4. [DOI: 10.4045/tidsskr.12.0390] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
|
22
|
Non-coding RNA in Neurodegeneration. CURRENT GERIATRICS REPORTS 2012. [DOI: 10.1007/s13670-012-0023-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
23
|
Evidence of Bacteroides fragilis protection from Bartonella henselae-induced damage. PLoS One 2012; 7:e49653. [PMID: 23166739 PMCID: PMC3499472 DOI: 10.1371/journal.pone.0049653] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 10/10/2012] [Indexed: 12/26/2022] Open
Abstract
Bartonella henselae is able to internalize endothelial progenitor cells (EPCs), which are resistant to the infection of other common pathogens. Bacteroides fragilis is a gram-negative anaerobe belonging to the gut microflora. It protects from experimental colitis induced by Helicobacter hepaticus through the polysaccharide A (PSA). The aim of our study was to establish: 1) whether B. fragilis colonization could protect from B. henselae infection; if this event may have beneficial effects on EPCs, vascular system and tissues. Our in vitro results establish for the first time that B. fragilis can internalize EPCs and competes with B. henselae during coinfection. We observed a marked activation of the inflammatory response by Real-time PCR and ELISA in coinfected cells compared to B. henselae-infected cells (63 vs 23 up-regulated genes), and after EPCs infection with mutant B. fragilis ΔPSA (≅90% up-regulated genes) compared to B. fragilis. Interestingly, in a mouse model of coinfection, morphological and ultrastructural analyses by hematoxylin-eosin staining and electron microscopy on murine tissues revealed that damages induced by B. henselae can be prevented in the coinfection with B. fragilis but not with its mutant B. fragilis ΔPSA. Moreover, immunohistochemistry analysis with anti-Bartonella showed that the number of positive cells per field decreased of at least 50% in the liver (20±4 vs 50±8), aorta (5±1 vs 10±2) and spleen (25±3 vs 40±6) sections of mice coinfected compared to mice infected only with B. henselae. This decrease was less evident in the coinfection with ΔPSA strain (35±6 in the liver, 5±1 in the aorta and 30±5 in the spleen). Finally, B. fragilis colonization was also able to restore the EPC decrease observed in mice infected with B. henselae (0.65 vs 0.06 media). Thus, our data establish that B. fragilis colonization is able to prevent B. henselae damages through PSA.
Collapse
|
24
|
Li LB, Chang KH, Wang PR, Hirata RK, Papayannopoulou T, Russell DW. Trisomy correction in Down syndrome induced pluripotent stem cells. Cell Stem Cell 2012; 11:615-9. [PMID: 23084023 DOI: 10.1016/j.stem.2012.08.004] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 06/28/2012] [Accepted: 08/15/2012] [Indexed: 10/27/2022]
Abstract
Human trisomies can alter cellular phenotypes and produce congenital abnormalities such as Down syndrome (DS). Here we have generated induced pluripotent stem cells (iPSCs) from DS fibroblasts and introduced a TKNEO transgene into one copy of chromosome 21 by gene targeting. When selecting against TKNEO, spontaneous chromosome loss was the most common cause for survival, with a frequency of ~10(-4), while point mutations, epigenetic silencing, and TKNEO deletions occurred at lower frequencies in this unbiased comparison of inactivating mutations. Mitotic recombination events resulting in extended loss of heterozygosity were not observed in DS iPSCs. The derived, disomic cells proliferated faster and produced more endothelia in vivo than their otherwise isogenic trisomic counterparts, but in vitro hematopoietic differentiation was not consistently altered. Our study describes a targeted removal of a human trisomy, which could prove useful in both clinical and research applications.
Collapse
Affiliation(s)
- Li B Li
- Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | | | | | | | | | | |
Collapse
|
25
|
Rienzo M, Schiano C, Casamassimi A, Grimaldi V, Infante T, Napoli C. Identification of valid reference housekeeping genes for gene expression analysis in tumor neovascularization studies. Clin Transl Oncol 2012; 15:211-8. [PMID: 22855186 DOI: 10.1007/s12094-012-0904-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 05/25/2012] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Real time RT-PCR is a widely used technique to evaluate and confirm gene expression data obtained in different cell systems and experimental conditions. However, there are many conflicting reports about the same gene or sets of gene expression. A common method is to report the interest gene expression relative to an internal control, usually a housekeeping gene (HKG), which should be constant in cells independently of experimental conditions. MATERIALS AND METHODS In this study, the expression stability of ten HKGs was considered in parallel in two cell systems (endothelial and osteosarcoma cells): beta actin (ACTB), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), TATA box binding protein (TBP), hypoxanthine phosphoribosyl-transferase 1 (HPRT1), Cyclophilin A (PPIA), beta-2-microglobulin (B2M), glucuronidase beta (GUSB), eukaryotic translation elongation factor 1 alpha1 (EEF1A1), transferrin receptor (TFRC), ribosomal protein S18 (RPS18). In order to study the stability of candidate reference genes, data have been also analyzed by several algorithms (geNorm, NormFinder, BestKeeper and delta-Ct method). RESULTS AND CONCLUSIONS The overall analysis obtained by the comprehensive ranking showed that RPS18 and PPIA are appropriate internal reference genes for tumor neovascularization studies where it is necessary to analyze both systems at the same time.
Collapse
Affiliation(s)
- Monica Rienzo
- Department of General Pathology, Second University of Naples, Via L. De Crecchio 7, 80138, Naples, Italy.
| | | | | | | | | | | |
Collapse
|
26
|
Alzheimer's disease and vascular deficiency: lessons from imaging studies and down syndrome. Curr Gerontol Geriatr Res 2012; 2012:929734. [PMID: 22400025 PMCID: PMC3286884 DOI: 10.1155/2012/929734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Accepted: 11/30/2011] [Indexed: 11/30/2022] Open
Abstract
Down syndrome (DS) individuals are at high risk for developing Alzheimer's disease (AD) and consequently provide a unique opportunity to examine the factors leading to the onset of AD. This paper focuses on the neglected vascular parallels between AD and DS that can readily be examined in DS. Several recent AD studies provide evidence that internal jugular vein (IJV) reflux may result in white matter lesions and a 30% decrease in cerebrospinal fluid (CSF) clearance of amyloid-β. At the same time, studies analyzing the synthesis of amyloid-β in DS showed greater than expected amounts of Aβ than would be predicted by the increase in gene dosage, perhaps due to slower clearance. These studies are discussed along with the possibility that the venous and CSF dysfunction found in AD patients may be present early in life in persons with DS, leaving them particularly vulnerable to early onset AD. Studying IJV function in DS provides an opportunity to understand the role of vascular function in the initiation of AD.
Collapse
|
27
|
Oxidative Stress and Mitochondrial Dysfunction in Down Syndrome. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 724:291-9. [DOI: 10.1007/978-1-4614-0653-2_22] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
28
|
Lott IT. Antioxidants in Down syndrome. Biochim Biophys Acta Mol Basis Dis 2011; 1822:657-63. [PMID: 22206998 DOI: 10.1016/j.bbadis.2011.12.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 12/13/2011] [Accepted: 12/14/2011] [Indexed: 01/09/2023]
Abstract
Individuals with Down syndrome (DS) have high levels of oxidative stress throughout the lifespan. Mouse models of DS share some structural and functional abnormalities that parallel findings seen in the human phenotype. Several of the mouse models show evidence of cellular oxidative stress and have provided a platform for antioxidant intervention. Genes that are overexpressed on chromosome 21 are associated with oxidative stress and neuronal apoptosis. The lack of balance in the metabolism of free radicals generated during processes related to oxidative stress may have a direct role in producing the neuropathology of DS including the tendency to Alzheimer disease (AD). Mitochondria are often a target for oxidative stress and are considered to be a trigger for the onset of the AD process in DS. Biomarkers for oxidative stress have been described in DS and in AD in the general population. However, intervention trials using standard antioxidant supplements or diets have failed to produce uniform therapeutic effect. This chapter will examine the biological role of oxidative stress in DS and its relationship to abnormalities in both development and aging within the disorder. This article is part of a Special Issue entitled: Antioxidants and Antioxidant Treatment in Disease.
Collapse
Affiliation(s)
- Ira T Lott
- Department of Pediatrics and Neurology, School of Medicine, University of California Irvine (UCI), Orange, CA 92868, USA.
| |
Collapse
|
29
|
Zabel BA, Lewén S, Berahovich RD, Jaén JC, Schall TJ. The novel chemokine receptor CXCR7 regulates trans-endothelial migration of cancer cells. Mol Cancer 2011; 10:73. [PMID: 21672222 PMCID: PMC3123309 DOI: 10.1186/1476-4598-10-73] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 06/14/2011] [Indexed: 12/20/2022] Open
Abstract
Background Migration of metastatic tumor cells from the bloodstream into lymph nodes is thought to be facilitated by expression of the chemokine receptors CCR7, CXCR4 and, for B cell-derived tumors, CXCR5. Expression of their respective chemokine ligands (CCL19, CCL21, CXCL12 and CXCL13) by endothelial cells inside the lymph nodes facilitates the trans-endothelial migration (TEM) of these cells through high endothelial venules into the lymph node parenchyma. It is known that CXCR7, a second CXCL12 receptor, regulates TEM of CXCR4+CXCR7+ tumor cells towards a CXCL12 source. In this study, we set out to assess the potential stimulation by CXCL12 of tumor cell TEM towards other chemokines and whether CXCR7 might be able to regulate such effects. Methods The human Burkitt's lymphoma cell line NC-37, which expresses CXCR4, CXCR5, CXCR7 and CCR7, was selected as a model system. TEM of these cells through a human HUVEC endothelial cell monolayer was used as the main model system for these studies. Regulation of their TEM behavior by various concentrations of the various cognate chemokines for the above-mentioned receptors, placed in either the source or target wells of modified Boyden chamber migration plates, was assessed by quantifying the number of cells migrated under each experimental condition. Results Exposure of CXCR4+CXCR7+ cancer cells to CXCL12 greatly potentiated their TEM towards the chemokines CCL19 and CXCL13. This CXCL12-potentiated TEM was inhibited by the second CXCR7 chemokine ligand, CXCL11, as well as CXCR7-specific small molecule antagonists and antibodies. In contrast, the CXCR4 antagonist AMD3100 was less effective at inhibiting CXCL12-potentiated TEM. Thus, CXCR7 antagonists may be effective therapeutic agents for blocking CXCL12-mediated migration of CXCR4+CXCR7+ tumor cells into lymph nodes, regardless of whether the cancer cells follow a CXCL12 gradient or whether serum CXCL12 stimulates their migration towards CCR7 and CXCR5 chemokines in the lymph nodes.
Collapse
Affiliation(s)
- Brian A Zabel
- ChemoCentryx, Inc., 850 Maude Avenue, Mountain View, CA 94043, USA
| | | | | | | | | |
Collapse
|
30
|
Massive-scale RNA-Seq analysis of non ribosomal transcriptome in human trisomy 21. PLoS One 2011; 6:e18493. [PMID: 21533138 PMCID: PMC3080369 DOI: 10.1371/journal.pone.0018493] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 03/08/2011] [Indexed: 11/19/2022] Open
Abstract
Hybridization- and tag-based technologies have been successfully used in Down syndrome to identify genes involved in various aspects of the pathogenesis. However, these technologies suffer from several limits and drawbacks and, to date, information about rare, even though relevant, RNA species such as long and small non-coding RNAs, is completely missing. Indeed, none of published works has still described the whole transcriptional landscape of Down syndrome. Although the recent advances in high-throughput RNA sequencing have revealed the complexity of transcriptomes, most of them rely on polyA enrichment protocols, able to detect only a small fraction of total RNA content. On the opposite end, massive-scale RNA sequencing on rRNA-depleted samples allows the survey of the complete set of coding and non-coding RNA species, now emerging as novel contributors to pathogenic mechanisms. Hence, in this work we analysed for the first time the complete transcriptome of human trisomic endothelial progenitor cells to an unprecedented level of resolution and sensitivity by RNA-sequencing. Our analysis allowed us to detect differential expression of even low expressed genes crucial for the pathogenesis, to disclose novel regions of active transcription outside yet annotated loci, and to investigate a plethora of non-polyadenylated long as well as short non coding RNAs. Novel splice isoforms for a large subset of crucial genes, and novel extended untranslated regions for known genes--possibly novel miRNA targets or regulatory sites for gene transcription--were also identified in this study. Coupling the rRNA depletion of samples, followed by high-throughput RNA-sequencing, to the easy availability of these cells renders this approach very feasible for transcriptome studies, offering the possibility of investigating in-depth blood-related pathological features of Down syndrome, as well as other genetic disorders.
Collapse
|