Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K39/00—Medicinal preparations containing antigens or antibodies
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
  • C12N2720/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsRNA viruses
  • C12N2720/00011—Details
  • C12N2720/12011—Reoviridae
  • C12N2720/12311—Rotavirus, e.g. rotavirus A
  • C12N2720/12322—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes

Definitions

• Rotavirus is now recognized by the World Heal Organization as a major cause of infantile gastroenter ti and a high priority has been placed on control of thi disease by the production of a suitable vaccine (1).
• Cross neutralization tests indicate four (or possibly five) (2- serotypes of human rotavirus and animal studies appear t show little cross-protection between serotypes (5).
• potential vaccine may have to incorporate all the know human serotypes.
• T-he virus serotype has recently been show to be determined by the major outer shell glycoprotein (6 10) (a virus surface protein), and the gene segments codin for this protein from a bovine (UK) and a simian (SAIl rotavirus have recently been sequenced (11,12). To dat however, no such gene from human rotavirus has bee analysed. We therefor cloned and sequenced the gene encodin this protein from a human rotavirus. Hu/5 (isolated i Melbourne, Australia) belonging to serotype 2.
• the present invention provides a human rotavirus gen and a cloned human rotavirus gene, the use of such genes t obtain expression of antigenic viral proteins such as i bacteri al/procaryotic or eucaryotic expression systems an the expression products obtained and further includin vaccines and diagnostic reagents obtained therefrom.
• the present invention also provides the dsRNA gen segment coding for the major outer capsid glycoprotein of human rotavirus and, without prejudice to the generality o the foregoing, that human rotavirus may be Hu/Austral ia/5/7 (serotype 2), a DNA copy of same, a clone thereof, or vector or a host cell containing same, peptide sequence obtained therefrom.
• the present invention also provides a materia comprising a nucleotide sequence coding for at least part o the major outer capsid glycoprotein of a rotavirus.
• the present invention provides at lea one of the nucleotide sequences from nucleotide numbers 2 - 357, 480 - 513 and 657 - 720 of a rotavirus major oute capsid glycoprotein gene.
• the present invention provides least one of the amino acid sequences from amino aci numbers 82 - 103, 144 - 155 and 204 - 224 for which th nucleotide sequences of a rotavirus major outer capsi glycoprotein gene code.
• the prese invention provides a material comprising a nucleoti sequence encoding, or an amino acid sequence being, a. an a ino ac d sequence of 22 amino aci commencing CLYYP and terminating TLS, b. an a ino acid sequence of 12 a ino aci commencing YD and terminating SEL, or - c.
• blot was cut (lengthwise) in strips and hybridized to 32 P-label led cDNA or ni translated DNA probes.
• Labelled cDNA was prepared from Hu segments 7, 8 and 9 dsRNA ( isolated by agarose g electrophoresi s) using reverse transcri ptase' (Life Scienc Inc. U.S.A.) and random primer DNA (prepared from ca thy us DNA) (18).
• Hybridization conditions were as follow blots were prehybridized for 15 m in at 60°C in 5 Denhardt's solution containing 10mM HEPES (pH 7.0), 0. SDS, 3 x SSC, lOmug/ l .
• a synthetic pri mer ( 5 '-dGGTCACAT-3 ' complementary to the 3 1 end of the mRNA-sense strand w also used.
• Electrophoresi s of rotavirus dsRNA dsRNA was extracted from purified virus preparatio using a simpl fied version of the method of Herring e; al (22). Briefly, 5mul of a purified virus suspension was adde to 200mul of 0.1 M sodium acetate buffer (pH5.0) containin 1% sodium dodecyl- sul phate (SDS) and vortexed for 1 min wit an equal volume of 'phenol '/ch loro form mixture.
• the phase were separated by a brief ce ntri f ugati on (2 1 , 10,000 g) an an aliquot of the aqueous phase (5-20mul) mixed with 20mu of sample buffer (25% (v/v) glycerol, 0.2% bromphenol blue 0.4M Tris-CI (pH6.8)) and analysed on a 10% pol yacryl amid 'gel (0.75 mm thick) using the buffer system of Laemmli (23 (but without SDS). The gel was silver stained according t the method of Herring et a_J_. (22), except that th incubation in silver nitrate was for 30 min instead of 2 hr and sodium borohydr de was omitted from the developin solution.
• RNA bands were transferred to AP paper and the paper cut into strips (lengthwise). The blo were hybridized to 32 P-labelled DNA probes prepared from; RNA segments 7, 8 and 9 of Hu/5 virus (to precisely locat these bands); C, a pBR322 clone of UK virus segment 8 (th gene encoding the major outer shell glycoprotein of thi virus), and D, a pBR322 clone of the glycoprotein gene o Hu/5 virus.
• Fi gu re 3 is a summary of the sequencing strategy us to determine the nucleotide sequence of the cloned DNA co of dsRNA gene segment 8 of Hu/5 rotavirus.
• phase termination codons a indicated by solid bars.
• Fi gu re j5. Is . a comparison of the predicted a ino-ac sequence of portion of the major outer shell glycoprotei of Hu/5 as compared to the equivalent regions of SAIl and rotavirus. . -
• the rotavirus genome consists of eleven dsRNA segmen which upon gel electrophoresis form a characteristic patte of bands; the virus electropherotype (24).
• the gel patter of genomic RNA from the human rotavirus Hu (Hu/Australia/5/77) (13), Wa (25) (human,- serotype 1) and (26) viruses are shown in Fig.
• Hu/5 genomic dsRNA was converted into DNA and clon into the Pstl site of pBR322 as described previously for rotavirus (15). Clones of the major outer shell glycoprote were identified using a probe ( ⁇ z P-labelled by ni translation) prepared from a cloned glycoprotein gene fr UK bovine rotavirus (11). The identity of one of the clones was confirmed by Northern blot analyses which als mapped this gene to segment 8 of Hu/5 rotavirus (Fig. 2 This clone was sequenced according to the strategy shown i Fig. 3 and the full sequence is shown in Fig. 4. The clon is a full-length copy of the glycoprotein gene since a) i is the same length (i.e.
• Hu/5 is a human serotype virus
• UK belongs to a bovine serotype (33)
• SA although of simian origin is s er ol og i cal ly human type (33).
• Results of competition experiments using monoclon antibodies to SAIl virus have demonstrated only one possibly two epitqpes involved in neutralization (42).
• monoclonal antibodies whi neutralize SAIl rotavirus.
• By selecting mutants resistant neutralization and sequencing their glycoprotein genes were able to identify three (A, B and C) important regio (M.L. Dyall-S ith, I. Lazdins, G.W. Tregear and I.H.

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• Life Sciences & Earth Sciences (AREA)
• Molecular Biology (AREA)
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• Biophysics (AREA)
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• General Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Genetics & Genomics (AREA)
• Proteomics, Peptides & Aminoacids (AREA)
• Gastroenterology & Hepatology (AREA)
• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
• Peptides Or Proteins (AREA)
• Micro-Organisms Or Cultivation Processes Thereof (AREA)
• Preparation Of Compounds By Using Micro-Organisms (AREA)

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• 1985
  • 1985-04-26 CA CA000480251A patent/CA1339735C/en not_active Expired - Fee Related
  • 1985-04-29 US US07/474,642 patent/US5395759A/en not_active Expired - Lifetime
  • 1985-04-29 AU AU42970/85A patent/AU591058B2/en not_active Expired
  • 1985-04-29 WO PCT/AU1985/000096 patent/WO1985005122A1/en not_active Ceased
  • 1985-04-29 JP JP60502036A patent/JPS61501958A/ja active Pending
  • 1985-04-29 DE DE8585901936T patent/DE3587214D1/de not_active Expired - Lifetime
  • 1985-04-29 EP EP85901936A patent/EP0180603B1/en not_active Expired - Lifetime
• 1994
  • 1994-02-28 US US08/202,380 patent/US5741698A/en not_active Expired - Lifetime

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