Haemophilus influenzae may make any one of six chemically distinct capsular polysaccharides, but only strains of capsular serotype b commonly cause systemic infection (e.g., meningitis) in humans. Molecular cloning of DNA was used to investigate the expression of type b capsule and its association with H. influenzae virulence. A virulent H. influenzae type b strain was used to construct a lambda library of chromosomal DNA in Charon 4. Two independently isolated recombinant phage were isolated from the library and were found to possess DNA necessary for expression of type b capsule. Using a well-characterized rat model of H. influenzae systemic infection, we showed that type b transformants elicited by the cloned DNA were pathogenic, causing bacteremia and meningitis, whereas the untransformed capsule-deficient H. influenzae organisms were not. A 4.4-kb EcoRI fragment, common to both DNA clones, was used to characterize clinical isolates representing all six encapsulated serotypes as well as several capsule-deficient H. influenzae by Southern hybridization analysis. The probe hybridized to an identical sized (4.4 kb) fragment of EcoRI-digested chromosomal DNA from eight independently isolated type b strains. Single bands of homology to the probe were also found in EcoRI fragments of chromosomal DNA obtained from 33 encapsulated, nontype b H. influenzae. However, the size of these EcoRI fragments proved to be characteristic for each of the different capsular serotypes. These studies provide a basis for pursuing the molecular analysis of the epidemiology and virulence of pathogenic H. influenzae.
E R Moxon, R A Deich, C Connelly
Title and authors | Publication | Year |
---|---|---|
The Lung Immune Response to Nontypeable Haemophilus influenzae (Lung Immunity to NTHi)
PT King, R Sharma |
Journal of Immunology Research | 2015 |
Opportunistic Bacteria in Tonsil and Dental Plaque are Indicator for Oral Care
H Nobuhiro |
2015 | |
Haemophilus influenzae serotype a as a cause of serious invasive infections
M Ulanova, RS Tsang |
The Lancet Infectious Diseases | 2014 |
Haemophilus influenzae and the lung (Haemophilus and the lung)
P King |
Clinical and Translational Medicine | 2012 |
Human Disease Isolates of Serotype M4 and M22 Group A Streptococcus Lack Genes Required for Hyaluronic Acid Capsule Biosynthesis
AR Flores, BE Jewell, N Fittipaldi, SB Beres, JM Musser |
mBio | 2012 |
Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases
VG Fowler, WM Scheld, AS Bayer |
Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases | 2010 |
Pulmonary surfactant: an immunological perspective
ZC Chroneos, Z Sever-Chroneos, VL Shepherd |
Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology | 2009 |
Mucosal Clearance of Capsule-Expressing Bacteria Requires Both TLR and Nucleotide-Binding Oligomerization Domain 1 Signaling
TA Zola, ES Lysenko, JN Weiser |
Journal of immunology (Baltimore, Md. : 1950) | 2008 |
The Haemophilus influenzae Type b hcsA and hcsB Gene Products Facilitate Transport of Capsular Polysaccharide across the Outer Membrane and Are Essential for Virulence
S Sukupolvi-Petty, S Grass, JW StGeme |
Journal of bacteriology | 2006 |
Presence of Copper- and Zinc-Containing Superoxide Dismutase in Commensal Haemophilus haemolyticus Isolates Can Be Used as a Marker To Discriminate Them from Nontypeable H. influenzae Isolates
WW Fung, CA O'Dwyer, S Sinha, AL Brauer, TF Murphy, JS Kroll, PR Langford |
Journal of clinical microbiology | 2006 |
Invasive Infections with Haemophilus influenzae Serotype a Containing an IS1016-bexA Partial Deletion: Possible Association with Virulence
BG Kapogiannis, S Satola, HL Keyserling, MM Farley |
Clinical Infectious Diseases | 2005 |
Implications of Phase Variation of a Gene ( pgtA ) Encoding a Pilin Galactosyl Transferase in Gonococcal Pathogenesis
A Banerjee, R Wang, SL Supernavage, SK Ghosh, J Parker, NF Ganesh, PG Wang, S Gulati, PA Rice |
Journal of Experimental Medicine | 2002 |
Active Copper- and Zinc-Containing Superoxide Dismutase in the Cryptic Genospecies of Haemophilus Causing Urogenital and Neonatal Infections Discriminates Them from Haemophilus influenzae Sensu Stricto
PR Langford, BJ Sheehan, T Shaikh, JS Kroll |
Journal of clinical microbiology | 2002 |
Principles of Bacterial Pathogenesis
M Caparon |
Principles of Bacterial Pathogenesis | 2001 |
Non-typeable Haemophilus influenzae adhere to and invade human bronchial epithelial cells via an interaction of lipooligosaccharide with the PAF receptor
WE Swords, BA Buscher, KV Steeg, A Preston, WA Nichols, JN Weiser, BW Gibson, MA Apicella |
Molecular Microbiology | 2000 |
Pasteurella multocida capsule: composition, function and genetics
JD Boyce, JY Chung, B Adler |
Journal of Biotechnology | 2000 |
Genetic organisation of the capsule biosynthetic locus of Pasteurella multocida M1404 (B:2)
JD Boyce, JY Chung, B Adler |
Veterinary Microbiology | 2000 |
Identification of a Haemophilus influenzae5′-Nucleotidase Protein: Cloning of the nucA Gene and Immunogenicity and Characterization of the NucA Protein
DL Burns, RJ Zagursky, P Ooi, KF Jones, MJ Fiske, RP Smith, BA Green |
Infection and immunity | 2000 |
The Capsule Is a Virulence Determinant in the Pathogenesis of Pasteurella multocida M1404 (B:2)
EI Tuomanen, JD Boyce, B Adler |
Infection and immunity | 2000 |
Amoxicillin treatment of experimental acute otitis media caused by Haemophilus influenzae with non-beta-lactamase-mediated resistance to beta-lactams: aspects of virulence and treatment
A Melhus, H Janson, E Westman, A Hermansson, A Forsgren, K Prellner |
Antimicrobial agents and chemotherapy | 1997 |
Altered lipopolysaccharide characteristic of the I69 phenotype in Haemophilus influenzae results from mutations in a novel gene, isn
A Preston, D Maskell, A Johnson, ER Moxon |
Journal of bacteriology | 1996 |
Duplication of pilus gene complexes of Haemophilus influenzae biogroup aegyptius
TD Read, M Dowdell, SW Satola, MM Farley |
Journal of bacteriology | 1996 |
Identification, cloning, and sequencing of the immunoglobulin A1 protease gene of Streptococcus pneumoniae
JH Wani, JV Gilbert, AG Plaut, JN Weiser |
Infection and immunity | 1996 |
Region II of the Haemophilus influenzae Type b capsulation locus as involved in serotype-specific polysaccharide synthesis
J Eldere, L Brophy, B Loynds, P Celts, I Hancock, S Carman, JS Kroll, ER Moxon |
Molecular Microbiology | 1995 |
Analysis of Neisseria meningitidis class 3 outer membrane protein gene variable regions and type identification using genetic techniques
MC Bash, KB Lesiak, SD Banks, CE Frasch |
Infection and immunity | 1995 |
Cloning and characterization of the meningococcal polyphosphate kinase gene: production of polyphosphate synthesis mutants
CR Tinsley, EC Gotschlich |
Infection and immunity | 1995 |
Genetic locus for the biosynthesis of the variable portion of Neisseria gonorrhoeae lipooligosaccharide
EC Gotschlich |
Journal of Experimental Medicine | 1994 |
Limited diversity of the protein D gene (hpd) among encapsulated and nonencapsulated Haemophilus influenzae strains
H Janson, M Ruan, A Forsgren |
Infection and immunity | 1993 |
Identification of variable region differences in Neisseria meningitidis class 3 protein sequences among five group B serotypes
GA Zapata, WF Vann, Y Rubinstein, CE Frasch |
Molecular Microbiology | 1992 |
Insertion sequence IS1016 and absence of Haemophilus capsulation genes in the Brazilian purpuric fever clone of Haemophilus influenzae biogroup aegyptius
SR Dobson, JS Kroll, ER Moxon |
Infection and immunity | 1992 |
The Haemophilus influenzae capsulation gene cluster: a compound transposon
JS Kroll, BM Loynds, ER Moxon |
Molecular Microbiology | 1991 |
Antibody to a 145-kilodalton outer membrane protein has bactericidal activity and protective activity against experimental bacteremia caused by a Brazilian purpuric fever isolate of Haemophilus influenzae biogroup aegyptius. The Brazilian Purpuric Fever Study Group
LG Rubin, A Rizvi |
Infection and immunity | 1991 |
Immunogenicity of Actinobacillus pleuropneumoniae outer membrane proteins and enhancement of phagocytosis by antibodies to the proteins
RN Thwaits, S Kadis |
Infection and immunity | 1991 |
Copper-zinc superoxide dismutase of Haemophilus influenzae and H. parainfluenzae
JS Kroll, PR Langford, BM Loynds |
Journal of bacteriology | 1991 |
Capsular typing of Haemophilus influenzae with a DNA probe
J Kroll, S Ely, E Moxon |
Molecular and Cellular Probes | 1991 |
A major crossreactive idiotype associated with human antibodies to the Haemophilus influenzae b polysaccharide. Expression in relation to age and immunoglobulin G subclass
AH Lucas, DM Granoff |
Journal of Clinical Investigation | 1990 |
Antigenic relationships among the porin proteins of encapsulated Haemophilus influenzae clones
D Martin, J Hamel, BR Brodeur, JM Musser |
Journal of clinical microbiology | 1990 |
Capsulation in distantly related strains of Haemophilus influenzae type b: genetic drift and gene transfer at the capsulation locus
JS Kroll, ER Moxon |
Journal of bacteriology | 1990 |
Bacterial Capsules
K Jann, B Jann |
1990 | |
Identification and characterization of a serotype b-specific segment of the Haemophilus influenzae genome
S Ely, J Tippett, ER Moxon |
Infection and immunity | 1989 |
Common organization of chromosomal loci for production of different capsular polysaccharides in Haemophilus influenzae
JS Kroll, S Zamze, B Loynds, ER Moxon |
Journal of bacteriology | 1989 |
Genetic and phenotypic variation in the capsulation and virulence of culture collection strains of Haemophilus influenzae type b
JS Kroll, ER Moxon |
Microbial Pathogenesis | 1989 |
The molecular basis of pathogenicity in Haemophilus influenzae: comparative virulence of genetically-related capsular transformants and correlation with changes at the capsulation locus cap
A Zwahlen, JS Kroll, LG Rubin, ER Moxon |
Microbial Pathogenesis | 1989 |
Type b capsular polysaccharide as a virulence factor of Haemophilus influenzae
ER Moxon, JS Kroll |
Vaccine | 1988 |
Capsule loss in H. influenzae type b occurs by recombination-mediated disruption of a gene essential for polysaccharide export
JS Kroll, I Hopkins, ER Moxon |
Cell | 1988 |
Capsulation and gene copy number at the cap locus of Haemophilus influenzae type b
JS Kroll, ER Moxon |
Journal of bacteriology | 1988 |
Virulence properties and protective efficacy of the capsular polymer of Haemophilus (Actinobacillus) pleuropneumoniae serotype 5
TJ Inzana, J Ma, T Workman, RP Gogolewski, P Anderson |
Infection and immunity | 1988 |
Cloning of genes encoding a 15,000-dalton peptidoglycan-associated outer membrane lipoprotein and an antigenically related 15,000-dalton protein from Haemophilus influenzae
RA Deich, BJ Metcalf, CW Finn, JE Farley, BA Green |
Journal of bacteriology | 1988 |
Evolutionary genetics of the encapsulated strains of Haemophilus influenzae
JM Musser, JS Kroll, ER Moxon, RK Selander |
Proceedings of the National Academy of Sciences | 1988 |
Clonal population structure of encapsulated Haemophilus influenzae
JM Musser, JS Kroll, ER Moxon, RK Selander |
Infection and immunity | 1988 |
Haemophilus influenzae serotype a: outer membrane protein classification and correlation with DNA polymorphism at the cap locus
I Allan, JS Kroll, A Dhir, ER Moxon |
Infection and immunity | 1988 |
Limited diversity of the immunoglobulin A1 protease gene (iga) among Haemophilus influenzae serotype b strains
K Poulsen, JP Hjorth, M Kilian |
Infection and immunity | 1988 |
Bacteria, Complement and the Phagocytic Cell
FC Cabello, C Pruzzo |
1988 | |
Protection of infant rats from Haemophilus influenzae type b infection by antiserum to purified outer membrane protein a
MR Loeb |
Infection and immunity | 1987 |
Cross-reactivity of surface-exposed epitopes of outer membrane antigens of Haemophilus influenzae type b
MR Loeb, KA Woodin |
Infection and immunity | 1987 |
Translocation of capsular polysaccharides in pathogenic strains of Escherichia coli requires a 60-kilodalton periplasmic protein
RP Silver, W Aaronson, WF Vann |
Journal of bacteriology | 1987 |
Haemophilus influenzae immunoglobulin A1 protease genes: cloning by plasmid integration-excision, comparative analyses, and localization of secretion determinants
FJ Grundy, A Plaut, A Wright |
Journal of bacteriology | 1987 |
Limited genetic diversity of Haemophilus influenzae (type b)
I Allan, MR Loeb, ER Moxon |
Microbial Pathogenesis | 1987 |
Dissociation of virulence and protection from infection by mutant analysis in Haemophilus influenzae type b
R Yogev, EJ Hansen |
Infection and immunity | 1987 |
Mutations affecting expression and maintenance of genes encoding the serotype b capsule of Haemophilus influenzae
S Ely, J Tippett, JS Kroll, ER Moxon |
Journal of bacteriology | 1986 |
Genes involved in Haemophilus influenzae type b capsule expression are part of an 18-kilobase tandem duplication
SK Hoiseth, ER Moxon, RP Silver |
Proceedings of the National Academy of Sciences | 1986 |
Application of multilocus enzyme gel electrophoresis to Haemophilus influenzae
O Porras, DA Caugant, T Lagergård, C Svanborg-Edén |
Infection and immunity | 1986 |
Difference in structure between type b and nontypable Haemophilus influenzae populations
O Porras, DA Caugant, B Gray, T Lagergård, BR Levin, C Svanborg-Edén |
Infection and immunity | 1986 |
Genetic relationships of serologically nontypable and serotype b strains of Haemophilus influenzae
JM Musser, SJ Barenkamp, DM Granoff, RK Selander |
Infection and immunity | 1986 |
Contribution of lipopolysaccharide to pathogenicity of Haemophilus influenzae: comparative virulence of genetically-related strains in rats
A Zwahlen, LG Rubin, ER Moxon |
Microbial Pathogenesis | 1986 |
Genetics of spontaneous, high-frequency loss of b capsule expression in Haemophilus influenzae
SK Hoiseth, CJ Connelly, ER Moxon |
Infection and immunity | 1985 |
Cloning and surface expression in Escherichia coli of a structural gene encoding a surface protein of Haemophilus influenzae type b
PL Holmans, TA Loftus, EJ Hansen |
Infection and immunity | 1985 |
Physical and genetic analysis of DNA regions encoding the immunoglobulin A proteases of different specificities produced by Haemophilus influenzae
J Bricker, M Mulks, ER Moxon, AG Plaut, A Wright |
Infection and immunity | 1985 |
The Pathogenesis of Bacterial Infections
GG Jackson, H Thomas |
1985 | |
Virulence genes and prevention of Haemophilus influenzae infections
ER Moxon |
Archives of disease in childhood | 1985 |
The molecular basis of Haemophilus influenzae virulence
E R Moxon |
Journal of the Royal College of Physicians of London | 1985 |
Pathogenesis of meningitis: Experimental studies on the molecular basis of Haemophilus influenzae infection
ER Moxon, A Zwahlen, LG Rubin, S Hoiseth, C Connelly |
Infection | 1984 |