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  1. AU="Jiménez, Karen Marcela"
  2. AU="Costello, Kelly L"
  3. AU="Sochacki, Mateusz"
  4. AU="Marja Koskuvi"
  5. AU="Hu, Xinfeng"
  6. AU=Sugarman Jeremy AU=Sugarman Jeremy
  7. AU="Tandale, Babasaheb"
  8. AU="Xie, Xinming"

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  1. Artikel ; Online: Linking genotype to trophoblast phenotype in preeclampsia and HELLP syndrome associated with

    Costa, Lorenzo / Bermudez-Guzman, Luis / Benouda, Ikram / Laissue, Paul / Morel, Adrien / Jiménez, Karen Marcela / Fournier, Thierry / Stouvenel, Laurence / Méhats, Céline / Miralles, Francisco / Vaiman, Daniel

    iScience

    2024  Band 27, Heft 3, Seite(n) 109260

    Abstract: Preeclampsia is a major hypertensive pregnancy disorder with a 50% heritability. The first identified gene involved in the disease is STOX1, a transcription factor, whose variant Y153H predisposes to the disease. Two rare mutations were also identified ... ...

    Abstract Preeclampsia is a major hypertensive pregnancy disorder with a 50% heritability. The first identified gene involved in the disease is STOX1, a transcription factor, whose variant Y153H predisposes to the disease. Two rare mutations were also identified in Colombian women affected by the hemolysis, elevated liver enzyme, low platelet syndrome, a complication of preeclampsia (T188N and R364X). Here, we explore the effects of these variants in trophoblast cell models (BeWo) where STOX1 was previously invalidated. We firstly showed that STOX1 knockout alters response to oxidative stress, cell proliferation, and fusion capacity. Then, we showed that mutant versions of STOX1 trigger alterations in gene profiles, growth, fusion, and oxidative stress management. The results also reveal alterations of the STOX interaction with DNA when the mutations affected the DNA-binding domain of STOX1 (Y153H and T188N). We also reveal here that a major contributor of these effects appears to be the E2F3 transcription factor.
    Sprache Englisch
    Erscheinungsdatum 2024-02-16
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2024.109260
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Performance Comparison of a Duplex Implementation of the CDC EUA 2019-nCoV Assay with the Seegene Allplex-SARS-CoV-2 Assay for the Detection of SARS-CoV-2 in Nasopharyngeal Swab Samples.

    Jiménez, Karen Marcela / Fonseca-Mendoza, Dora Janeth / Morel, Adrien / Ortega-Recalde, Oscar / Contreras Bravo, Nora Constanza / Velandia-Piedrahita, Camilo Andres / Steevens, Adriana / Caldas, Luisa Daniela / Ribón, Juan Pablo / Sánchez, Martha / Restrepo, Carlos Martin / Cabrera, Rodrigo

    Methods and protocols

    2022  Band 5, Heft 5

    Abstract: RT-PCR tests have become the gold standard for detecting the SARS-CoV-2 virus in the context of the COVID-19 pandemic. Because of the extreme number of cases in periodic waves of infection, there is a severe financial and logistical strain on diagnostic ... ...

    Abstract RT-PCR tests have become the gold standard for detecting the SARS-CoV-2 virus in the context of the COVID-19 pandemic. Because of the extreme number of cases in periodic waves of infection, there is a severe financial and logistical strain on diagnostic laboratories. For this reason, alternative implementations and validations of academic protocols that employ the lowest cost and the most widely available equipment and reagents found in different regions are essential. In this study, we report an alternative implementation of the EUA 2019-nCoV CDC assay which uses a previously characterized duplex PCR reaction for the N1 and RNAse P target regions and an additional uniplex reaction for the N2 target region. Taking advantage of the Abbott m2000 Sample Preparation System and NEB Luna Universal Probe One-Step RT-qPCR kit, some of the most widely available and inexpensive nucleic acid extraction and amplification platforms, this modified test shows state-of-the-art analytical and clinical sensitivities and specificities when compared with the Seegene Allplex-SARS-CoV-2 assay. This implementation has the potential to be verified and implemented by diagnostic laboratories around the world to guarantee low-cost RT-PCR tests that can take advantage of widely available equipment and reagents.
    Sprache Englisch
    Erscheinungsdatum 2022-09-21
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ISSN 2409-9279
    ISSN (online) 2409-9279
    DOI 10.3390/mps5050073
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Transcriptomic analysis of FUCA1 knock-down in keratinocytes reveals new insights into the pathogenesis of fucosidosis skin lesions.

    Valero-Rubio, Danyela / Jiménez, Karen Marcela / Fonseca, Dora Janeth / Payán-Gómez, César / Laissue, Paul

    Experimental dermatology

    2018  Band 27, Heft 6, Seite(n) 663–667

    Abstract: Fucosidosis is a rare lysosomal storage disease which has been classified into two subtypes, depending on the severity of clinical signs and symptoms. Fucosidosis patients' skin abnormalities include angiokeratoma corporis diffusum, widespread ... ...

    Abstract Fucosidosis is a rare lysosomal storage disease which has been classified into two subtypes, depending on the severity of clinical signs and symptoms. Fucosidosis patients' skin abnormalities include angiokeratoma corporis diffusum, widespread telangiectasia, thick skin, hyperhidrosis and hypohidrosis, acrocyanosis and distal transverse nail bands. It has been described that >50% of fucosidosis patients have angiokeratoma. At molecular level, fucosidosis is caused by lysosomal alpha-L-fucosidase (FUCA1) gene mutations. Obtaining samples for functional studies has been challenging due to the inherent difficulty in finding affected individuals. The effect of FUCA1 dysfunction on gene expression is unknown. The aim of this study was to analyse, in keratinocytes, the transcriptomic effect of FUCA1 knock-down for a better understanding of skin lesions' pathogenesis affecting fucosidosis patients. FUCA1 knock-down (siRNA) was performed in human HaCaT immortalised keratinocytes. Affymetrix arrays and qPCR were used for analysing gene expression. Bioinformatics was used for functional clustering of modified genes. In total, 387 genes showed differential expression between FUCA1 silenced and non-silenced cells (222 up-regulated and 165 down-regulated). Up-regulated genes belonged to two major groups: keratinocyte differentiation/epidermal development (n = 17) and immune response (n = 61). Several transcription factors were up-regulated in FUCA1-siRNA transfected cells. This effect might partly have been produced by abnormal transcription factor expression, that is FOXN1. We thus propose that fucosidosis-related skin lesions (eg angiokeratoma) and those of other diseases (eg psoriasis) might be caused by dysfunctions in common aetiological overlapping molecular cascades.
    Mesh-Begriff(e) Angiokeratoma/genetics ; Cell Differentiation/genetics ; Cell Line ; Computational Biology ; Down-Regulation/genetics ; Epidermis/growth & development ; Epidermis/immunology ; Fucosidosis/complications ; Fucosidosis/genetics ; Gene Expression Profiling ; Gene Knockdown Techniques ; Humans ; Keratinocytes ; Oligonucleotide Array Sequence Analysis ; Skin Diseases/etiology ; Skin Diseases/genetics ; Transcriptome/genetics ; Up-Regulation/genetics ; alpha-L-Fucosidase/genetics
    Chemische Substanzen FUCA1 protein, human ; alpha-L-Fucosidase (EC 3.2.1.51)
    Sprache Englisch
    Erscheinungsdatum 2018-03-06
    Erscheinungsland Denmark
    Dokumenttyp Journal Article
    ZDB-ID 1130936-2
    ISSN 1600-0625 ; 0906-6705
    ISSN (online) 1600-0625
    ISSN 0906-6705
    DOI 10.1111/exd.13532
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Identifying new potential genetic biomarkers for HELLP syndrome using massive parallel sequencing.

    Jiménez, Karen Marcela / Morel, Adrien / Parada-Niño, Laura / Alejandra González-Rodriguez, María / Flórez, Stephanie / Bolívar-Salazar, David / Becerra-Bayona, Silvia / Aguirre-García, Angel / Gómez-Murcia, Tatiana / Fernanda Castillo, Luisa / Carlosama, Carolina / Ardila, Javier / Vaiman, Daniel / Serrano, Norma / Laissue, Paul

    Pregnancy hypertension

    2020  Band 22, Seite(n) 181–190

    Abstract: Background: Preeclampsia (PE) is a frequently occurring multisystemic disease affecting ~5% of pregnancies. PE patients may develop HELLP syndrome (haemolysis, elevated liver enzymes, and low platelet), a mother and foetus life-threatening condition. ... ...

    Abstract Background: Preeclampsia (PE) is a frequently occurring multisystemic disease affecting ~5% of pregnancies. PE patients may develop HELLP syndrome (haemolysis, elevated liver enzymes, and low platelet), a mother and foetus life-threatening condition. Research into HELLP's genetic origin has been relatively unsuccessful, mainly because normal placental function and blood pressure regulation involve the fine-regulation of hundreds of genes.
    Objective: To identify new genes and mutations constituting potential biomarkers for HELLP syndrome.
    Study design: The present case-control study involved whole-exome sequencing of 79 unrelated HELLP women. Candidate variants were screened in a control population constituted by 176 individuals. Stringent bioinformatics filters were used for selecting potentially etiological sequence variants in a subset of 487 genes. We used robust in silico mutation modelling for predicting the potential effect on protein structure.
    Results: We identified numerous sequence variants in genes related to angiogenesis/coagulation/blood pressure regulation, cell differentiation/communication/adhesion, cell cycle and transcriptional gene regulation, extracellular matrix biology, lipid metabolism and immunological response. Five sequence variants generated premature stop codons in genes playing an essential role in placental physiology (STOX1, PDGFD, IGF2, MMP1 and DNAH11). Six variants (ERAP1- p.Ile915Thr, ERAP2- p.Leu837Ser, COMT-p.His192Gln, CSAD-p.Pro418Ser, CDH1- p.Ala298Thr and CCR2-p.Met249Lys) led to destabilisation of protein structure as they had significant energy and residue interaction-related changes. We identified at least two mutations in 57% of patients, arguing in favour of a polygenic origin for the HELLP syndrome.
    Conclusion: Our results provide novel evidence regarding PE/HELLP's genetic origin, leading to new biomarkers, having potential clinical usefulness, being proposed.
    Mesh-Begriff(e) Case-Control Studies ; Female ; Genetic Markers ; HELLP Syndrome/blood ; HELLP Syndrome/genetics ; Humans ; Pregnancy ; Whole Exome Sequencing/methods
    Chemische Substanzen Genetic Markers
    Sprache Englisch
    Erscheinungsdatum 2020-09-21
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 2584464-7
    ISSN 2210-7797 ; 2210-7789
    ISSN (online) 2210-7797
    ISSN 2210-7789
    DOI 10.1016/j.preghy.2020.09.003
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: FOXD1 mutations are related to repeated implantation failure, intra-uterine growth restriction and preeclampsia.

    Quintero-Ronderos, Paula / Jiménez, Karen Marcela / Esteban-Pérez, Clara / Ojeda, Diego A / Bello, Sandra / Fonseca, Dora Janeth / Coronel, María Alejandra / Moreno-Ortiz, Harold / Sierra-Díaz, Diana Carolina / Lucena, Elkin / Barbaux, Sandrine / Vaiman, Daniel / Laissue, Paul

    Molecular medicine (Cambridge, Mass.)

    2019  Band 25, Heft 1, Seite(n) 37

    Abstract: Background: Human reproductive disorders consist of frequently occurring dysfunctions including a broad range of phenotypes affecting fertility and women's health during pregnancy. Several female-related diseases have been associated with hypofertility/ ... ...

    Abstract Background: Human reproductive disorders consist of frequently occurring dysfunctions including a broad range of phenotypes affecting fertility and women's health during pregnancy. Several female-related diseases have been associated with hypofertility/infertility phenotypes, such as recurrent pregnancy loss (RPL). Other occurring diseases may be life-threatening for the mother and foetus, such as preeclampsia (PE) and intra-uterine growth restriction (IUGR). FOXD1 was defined as a major molecule involved in embryo implantation in mice and humans by regulating endometrial/placental genes. FOXD1 mutations in human species have been functionally linked to RPL's origin.
    Methods: FOXD1 gene mutation screening, in 158 patients affected by PE, IUGR, RPL and repeated implantation failure (RIF), by direct sequencing and bioinformatics analysis. Plasmid constructs including FOXD1 mutations were used to perform in vitro gene reporter assays.
    Results: Nine non-synonymous sequence variants were identified. Functional experiments revealed that p.His267Tyr and p.Arg57del led to disturbances of promoter transcriptional activity (C3 and PlGF genes). The FOXD1 p.Ala356Gly and p.Ile364Met deleterious mutations (previously found in RPL patients) have been identified in the present work in women suffering PE and IUGR.
    Conclusions: Our results argue in favour of FOXD1 mutations' central role in RPL, RIF, IUGR and PE pathogenesis via C3 and PlGF regulation and they describe, for the first time, a functional link between FOXD1 and implantation/placental diseases. FOXD1 could therefore be used in clinical environments as a molecular biomarker for these diseases in the near future.
    Mesh-Begriff(e) Abortion, Habitual/genetics ; Cohort Studies ; Female ; Fetal Growth Retardation/genetics ; Forkhead Transcription Factors/genetics ; Forkhead Transcription Factors/metabolism ; Genetic Predisposition to Disease/genetics ; Humans ; Mutation/genetics ; Polymorphism, Single Nucleotide/genetics ; Pre-Eclampsia/genetics ; Pregnancy ; Promoter Regions, Genetic/genetics
    Chemische Substanzen FOXD1 protein, human ; Forkhead Transcription Factors
    Sprache Englisch
    Erscheinungsdatum 2019-08-08
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1283676-x
    ISSN 1528-3658 ; 1076-1551
    ISSN (online) 1528-3658
    ISSN 1076-1551
    DOI 10.1186/s10020-019-0104-3
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Next generation sequencing in women affected by nonsyndromic premature ovarian failure displays new potential causative genes and mutations.

    Fonseca, Dora Janeth / Patiño, Liliana Catherine / Suárez, Yohjana Carolina / de Jesús Rodríguez, Asid / Mateus, Heidi Eliana / Jiménez, Karen Marcela / Ortega-Recalde, Oscar / Díaz-Yamal, Ivonne / Laissue, Paul

    Fertility and sterility

    2015  Band 104, Heft 1, Seite(n) 154–62.e2

    Abstract: Objective: To identify new molecular actors involved in nonsyndromic premature ovarian failure (POF) etiology.: Design: This is a retrospective case-control cohort study.: Setting: University research group and IVF medical center.: Patient(s): ... ...

    Abstract Objective: To identify new molecular actors involved in nonsyndromic premature ovarian failure (POF) etiology.
    Design: This is a retrospective case-control cohort study.
    Setting: University research group and IVF medical center.
    Patient(s): Twelve women affected by nonsyndromic POF. The control group included 176 women whose menopause had occurred after age 50 and had no antecedents regarding gynecological disease. A further 345 women from the same ethnic origin (general population group) were also recruited to assess allele frequency for potentially deleterious sequence variants.
    Intervention(s): Next generation sequencing (NGS), Sanger sequencing, and bioinformatics analysis.
    Main outcome measure(s): The complete coding regions of 70 candidate genes were massively sequenced, via NGS, in POF patients. Bioinformatics and genetics were used to confirm NGS results and to identify potential sequence variants related to the disease pathogenesis.
    Result(s): We have identified mutations in two novel genes, ADAMTS19 and BMPR2, that are potentially related to POF origin. LHCGR mutations, which might have contributed to the phenotype, were also detected.
    Conclusion(s): We thus recommend NGS as a powerful tool for identifying new molecular actors in POF and for future diagnostic/prognostic purposes.
    Mesh-Begriff(e) ADAM Proteins/genetics ; ADAMTS Proteins ; Adult ; Bone Morphogenetic Protein Receptors, Type II/genetics ; Case-Control Studies ; Cohort Studies ; Female ; High-Throughput Nucleotide Sequencing/methods ; Humans ; Mutation/genetics ; Primary Ovarian Insufficiency/diagnosis ; Primary Ovarian Insufficiency/genetics ; Retrospective Studies ; Sequence Analysis/methods
    Chemische Substanzen BMPR2 protein, human (EC 2.7.11.30) ; Bone Morphogenetic Protein Receptors, Type II (EC 2.7.11.30) ; ADAM Proteins (EC 3.4.24.-) ; ADAMTS Proteins (EC 3.4.24.-) ; ADAMTS19 protein, human (EC 3.4.24.-)
    Sprache Englisch
    Erscheinungsdatum 2015-07
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80133-1
    ISSN 1556-5653 ; 0015-0282
    ISSN (online) 1556-5653
    ISSN 0015-0282
    DOI 10.1016/j.fertnstert.2015.04.016
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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