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  1. Buch: Understanding the Origin and Global Spread of Covid-19

    Wickramasinghe, Nalin Chandra / Gorczynski, Reginald M / Steele, Edward J

    2022  

    Sprache Englisch
    Umfang 304 p.
    Verlag World Scientific Publishing
    Dokumenttyp Buch
    Anmerkung PDA Manuell_17
    ISBN 9789811259074 ; 9811259070
    Datenquelle PDA

    Kategorien

  2. Buch: Cosmic genetic evolution

    Steele, Edward J.

    (Advances in genetics ; volume 106)

    2020  

    Verfasserangabe edited by Edward J. Steele, N. Chandra Wickramasinghe
    Serientitel Advances in genetics ; volume 106
    Überordnung
    Sprache Englisch
    Umfang xviii, 143 Seiten, Illustrationen, Diagramme
    Ausgabenhinweis First edition
    Verlag Elsevier AP
    Erscheinungsort Amsterdam
    Erscheinungsland Niederlande
    Dokumenttyp Buch
    HBZ-ID HT020641223
    ISBN 978-0-12-821518-0 ; 0-12-821518-6
    Datenquelle Katalog ZB MED Medizin, Gesundheit

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  3. Artikel: Introduction-Panspermia, 2020.

    Steele, Edward J

    Advances in genetics

    2020  Band 106, Seite(n) 1–4

    Abstract: This current volume is, in many ways, a 2020 update to the important 1999-2000 compendium by Sir Fred Hoyle and Professor N. Chandra Wickramasinghe's "Astronomical Origins of life: Steps towards Panspermia." The emerging new paradigm of biology that ... ...

    Abstract This current volume is, in many ways, a 2020 update to the important 1999-2000 compendium by Sir Fred Hoyle and Professor N. Chandra Wickramasinghe's "Astronomical Origins of life: Steps towards Panspermia." The emerging new paradigm of biology that connects life on Earth with the wider cosmos is covered in considerable depth showing that terrestrial biological evolution is best understood as a cosmically derived habitat and an interconnected genetic system. The various chapters here discuss all aspects of this interconnectedness, particularly relevant now in this time of the coronavirus pandemic (COVID-19) as the human race reacts to the many microbes and viral pathogens that arrive regularly from space.
    Mesh-Begriff(e) Betacoronavirus/physiology ; Biological Evolution ; COVID-19 ; Coronavirus Infections/epidemiology ; Coronavirus Infections/virology ; Disease/etiology ; Ecosystem ; Environment ; Exobiology ; Extraterrestrial Environment ; Host-Pathogen Interactions/physiology ; Humans ; Models, Biological ; Origin of Life ; Pandemics ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/virology ; SARS-CoV-2
    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-07-07
    Erscheinungsland United States
    Dokumenttyp Introductory Journal Article
    ZDB-ID 148-x
    ISSN 0065-2660
    ISSN 0065-2660
    DOI 10.1016/bs.adgen.2020.04.001
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Somatic mutation patterns at Ig and Non-Ig Loci.

    Steele, Edward J / Franklin, Andrew / Lindley, Robyn A

    DNA repair

    2023  Band 133, Seite(n) 103607

    Abstract: The reverse transcriptase (RT) model of immunoglobulin (Ig) somatic hypermutation (SHM) has received insufficient scientific attention. This is understandable given that DNA deamination mediated by activation-induced deaminase (AID), the initiating step ... ...

    Abstract The reverse transcriptase (RT) model of immunoglobulin (Ig) somatic hypermutation (SHM) has received insufficient scientific attention. This is understandable given that DNA deamination mediated by activation-induced deaminase (AID), the initiating step of Ig SHM, has dominated experiments since 2002. We summarise some key history of the RT Ig SHM model dating to 1987. For example, it is now established that DNA polymerase η, the sole DNA repair polymerase involved in post-replication short-patch repair, is an efficient cellular RT. This implies that it is potentially able to initiate target site reverse transcription by RNA-directed DNA repair at AID-induced lesions. Recently, DNA polymerase θ has also been shown to be an efficient cellular RT. Since DNA polymerase θ plays no significant role in Ig SHM, it could serve a similar RNA-dependent DNA polymerase role as DNA polymerase η at non-Ig loci in the putative RNA-templated nucleotide excision repair of bulky adducts and other mutagenic lesions on the transcribed strand. A major yet still poorly recognised consequence of the proposed RT process in Ig SHM is the generation of significant and characteristic strand-biased mutation signatures at both deoxyadenosine/deoxythymidine and deoxyguanosine/deoxycytidine base pairs. In this historical perspective, we highlight how diagnostic strand-biased mutation signatures are detected in vivo during SHM at both Ig loci in germinal centre B lymphocytes and non-Ig loci in cancer genomes. These strand-biased signatures have been significantly obscured by technical issues created by improper use of the polymerase chain reaction technique. A heightened awareness of this fact should contribute to better data interpretation and somatic mutation pattern recognition both at Ig and non-Ig loci.
    Mesh-Begriff(e) DNA/genetics ; DNA Repair ; Mutation ; RNA ; Somatic Hypermutation, Immunoglobulin ; Cytidine Deaminase/genetics ; Cytidine Deaminase/metabolism
    Chemische Substanzen DNA (9007-49-2) ; RNA (63231-63-0) ; Cytidine Deaminase (EC 3.5.4.5)
    Sprache Englisch
    Erscheinungsdatum 2023-11-28
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 2071608-4
    ISSN 1568-7856 ; 1568-7864
    ISSN (online) 1568-7856
    ISSN 1568-7864
    DOI 10.1016/j.dnarep.2023.103607
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Introduction-Panspermia, 2020

    Steele, Edward J

    Adv Genet

    Abstract: This current volume is, in many ways, a 2020 update to the important 1999-2000 compendium by Sir Fred Hoyle and Professor N. Chandra Wickramasinghe's "Astronomical Origins of life: Steps towards Panspermia." The emerging new paradigm of biology that ... ...

    Abstract This current volume is, in many ways, a 2020 update to the important 1999-2000 compendium by Sir Fred Hoyle and Professor N. Chandra Wickramasinghe's "Astronomical Origins of life: Steps towards Panspermia." The emerging new paradigm of biology that connects life on Earth with the wider cosmos is covered in considerable depth showing that terrestrial biological evolution is best understood as a cosmically derived habitat and an interconnected genetic system. The various chapters here discuss all aspects of this interconnectedness, particularly relevant now in this time of the coronavirus pandemic (COVID-19) as the human race reacts to the many microbes and viral pathogens that arrive regularly from space.
    Schlagwörter covid19
    Verlag WHO
    Dokumenttyp Artikel
    Anmerkung WHO #Covidence: #634816
    Datenquelle COVID19

    Kategorien

  6. Artikel ; Online: Analysis of SARS-CoV-2 haplotypes and genomic sequences during 2020 in Victoria, Australia, in the context of putative deficits in innate immune deaminase anti-viral responses.

    Lindley, Robyn A / Steele, Edward J

    Scandinavian journal of immunology

    2021  Band 94, Heft 5, Seite(n) e13100

    Abstract: The SARS-CoV-2 epidemic infections in Australia during 2020 were small in number in epidemiological terms and are well described. The SARS-CoV-2 genomic sequence data of many infected patients have been largely curated in a number of publicly available ... ...

    Abstract The SARS-CoV-2 epidemic infections in Australia during 2020 were small in number in epidemiological terms and are well described. The SARS-CoV-2 genomic sequence data of many infected patients have been largely curated in a number of publicly available databases, including the corresponding epidemiological data made available by the Victorian Department of Health and Human Services. We have critically analysed the available SARS-CoV-2 haplotypes and genomic sequences in the context of putative deficits in innate immune APOBEC and ADAR deaminase anti-viral responses. It is now known that immune impaired elderly co-morbid patients display clear deficits in interferon type 1 (α/β) and III (λ) stimulated innate immune gene cascades, of which APOBEC and ADAR induced expression are part. These deficiencies may help explain some of the clear genetic patterns in SARS-CoV-2 genomes isolated in Victoria, Australia, during the 2nd Wave (June-September, 2020). We tested the hypothesis that predicted lowered innate immune APOBEC and ADAR anti-viral deaminase responses in a significant proportion of elderly patients would be consistent with/reflected in a low level of observed mutagenesis in many isolated SARS-CoV-2 genomes. Our findings are consistent with this expectation. The analysis also supports the conclusions of the Victorian government's Department of Health that essentially one variant or haplotype infected Victorian aged care facilities where the great majority (79%) of all 820 SARS-CoV-2 associated deaths occurred. The implications of our data analysis for other localized epidemics and efficient coronavirus vaccine design and delivery are discussed.
    Mesh-Begriff(e) APOBEC Deaminases/genetics ; APOBEC Deaminases/metabolism ; Adenosine Deaminase/genetics ; Adenosine Deaminase/metabolism ; Age Factors ; Aged, 80 and over ; COVID-19/epidemiology ; COVID-19/immunology ; COVID-19/virology ; COVID-19 Vaccines/immunology ; Female ; Gene Regulatory Networks ; Haplotypes ; Humans ; Immunity, Innate ; Immunologic Deficiency Syndromes ; Interferon Type I/genetics ; Male ; RNA-Binding Proteins/genetics ; RNA-Binding Proteins/metabolism ; SARS-CoV-2/physiology ; Victoria/epidemiology
    Chemische Substanzen COVID-19 Vaccines ; Interferon Type I ; RNA-Binding Proteins ; ADAR protein, human (EC 3.5.4.37) ; Adenosine Deaminase (EC 3.5.4.4) ; APOBEC Deaminases (EC 3.5.4.5)
    Sprache Englisch
    Erscheinungsdatum 2021-09-30
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 120476-2
    ISSN 1365-3083 ; 0300-9475
    ISSN (online) 1365-3083
    ISSN 0300-9475
    DOI 10.1111/sji.13100
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: RNA-directed DNA repair and antibody somatic hypermutation.

    Franklin, Andrew / Steele, Edward J

    Trends in genetics : TIG

    2021  Band 38, Heft 5, Seite(n) 426–436

    Abstract: Somatic hypermutation at antibody loci affects both deoxyadenosine-deoxythymidine (A/T) and deoxycytidine-deoxyguanosine (C/G) pairs. Deamination of C to deoxyuridine (U) by activation-induced deaminase (AID) explains how mutation at C/G pairs is ... ...

    Abstract Somatic hypermutation at antibody loci affects both deoxyadenosine-deoxythymidine (A/T) and deoxycytidine-deoxyguanosine (C/G) pairs. Deamination of C to deoxyuridine (U) by activation-induced deaminase (AID) explains how mutation at C/G pairs is potentiated. Mutation at A/T pairs is triggered during the initial stages of repair of AID-generated U lesions and occurs through an as yet unknown mechanism in which polymerase η has a major role. Recent evidence confirms that human polymerase η can act as a reverse transcriptase. Here, we compare the popular suggestion of mutation at A/T pairs through nucleotide mispairing (owing to polymerase error) during short-patch repair synthesis with the alternative proposal of mutation at A/T pairs through RNA editing and RNA-directed DNA repair.
    Mesh-Begriff(e) Cytidine Deaminase/genetics ; Cytidine Deaminase/metabolism ; DNA/genetics ; DNA Repair/genetics ; DNA-Directed DNA Polymerase/genetics ; Humans ; Mutation ; RNA/genetics ; Somatic Hypermutation, Immunoglobulin/genetics
    Chemische Substanzen RNA (63231-63-0) ; DNA (9007-49-2) ; DNA-Directed DNA Polymerase (EC 2.7.7.7) ; Cytidine Deaminase (EC 3.5.4.5)
    Sprache Englisch
    Erscheinungsdatum 2021-11-02
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 619240-3
    ISSN 1362-4555 ; 0168-9525 ; 0168-9479
    ISSN (online) 1362-4555
    ISSN 0168-9525 ; 0168-9479
    DOI 10.1016/j.tig.2021.10.005
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Buch: Positive T-cell selection in the thymus

    Steele, Edward J.

    (Immunological reviews ; 135)

    1993  

    Verfasserangabe [E. J. Steele ...]
    Serientitel Immunological reviews ; 135
    Überordnung
    Schlagwörter T-Lymphocytes / physiology ; Thymus Gland / physiology ; T-Lymphocytes / immunology ; Thymus Gland / immunology
    Sprache Englisch
    Umfang 242 S. : Ill., graph. Darst.
    Verlag Munksgaard
    Erscheinungsort Copenhagen
    Erscheinungsland Dänemark
    Dokumenttyp Buch
    HBZ-ID HT005036708
    Datenquelle Katalog ZB MED Medizin, Gesundheit

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  9. Artikel: Reverse Transcriptase Mechanism of Somatic Hypermutation: 60 Years of Clonal Selection Theory.

    Steele, Edward J

    Frontiers in immunology

    2017  Band 8, Seite(n) 1611

    Abstract: The evidence for the reverse transcriptase mechanism of somatic hypermutation is substantial and multifactorial. In this 60th anniversary year of the publication of Sir MacFarlane Burnet's Clonal Selection Theory, the evidence is briefly reviewed and ... ...

    Abstract The evidence for the reverse transcriptase mechanism of somatic hypermutation is substantial and multifactorial. In this 60th anniversary year of the publication of Sir MacFarlane Burnet's Clonal Selection Theory, the evidence is briefly reviewed and updated.
    Sprache Englisch
    Erscheinungsdatum 2017-11-23
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2606827-8
    ISSN 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2017.01611
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Buch: Somatic hypermutation in V-regions

    Steele, Edward J.

    1991  

    Verfasserangabe ed. Edward J. Steele
    Schlagwörter Antibody Diversity ; Immunoglobulin Variable Region ; Mutation ; B-Lymphozyt ; Immunglobuline ; Gen ; Somatische Mutation ; Immunreaktion
    Schlagwörter Abwehrreaktion ; Immunantwort ; Immunoreaktivität ; Immunabwehr ; Erbanlage ; Erbeinheit ; Erbfaktor ; Gamma-Globuline ; Ig ; Immunoglobuline ; Immunglobulin vom Menschen ; Beriglotin ; B-Zelle
    Umfang 185 S. : Ill., graph. Darst.
    Verlag CRC Press
    Erscheinungsort Boca Raton u.a.
    Erscheinungsland Vereinigte Staaten
    Dokumenttyp Buch
    HBZ-ID HT003810301
    ISBN 0-8493-5348-3 ; 978-0-8493-5348-2
    Datenquelle Katalog ZB MED Medizin, Gesundheit

    Kategorien

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