摘要:
The present invention provides for processing methods that preserve pharmaceutical proteins expressed in plants. Herein raw plant tissue is reduced to a stable homogenate without significant loss of protein or pharmaceutical potency. The homogenate can be used directly for pharmaceutical purposes without the need to further extract, purify, or precipitate the pharmaceutical protein. The present invention further provides a method of effective immunocontraception for animal and human application. Methods are disclosed for producing transgenic plant or plant cells which express contraceptive proteins, and which can be delivered whole, in part, or after processing, to an animal to cause a contraceptive effect in the target species.
摘要:
A method of infecting insects is disclosed; the method utilizes a form of a baculovirus which is highly efficient at establishing infection and is normally destined to become occluded within the polyhedrin or granulin - Pre-occluded Virus (POV). Specifically, the POV as derived from a polyhedrin-minus or granulin-minus (lacking a functional polyhedrin or granulin gene) baculovirus is fed to insect larvae per os resulting in high infection rates. The discovery of the POV form of polyhedrin-minus baculoviruses was essential to our invention of the novel method of infecting insect larvae per os using the POV form of polyhedrin-minus baculovirus, and as such is also disclosed.
摘要:
A method for obtaining an immune response to a non-enteric pathogen antigen (NEPA) such as hepatitis B surface antigen (HBsAg) by feeding the antigen in a plant material to an animal that is immunoreceptive to the NEPA. It has now been discovered that the animal may be made immunoreceptive to the NEPA such as HBsAg by administering the plant material containing the NEPA in conjunction with a suitable adjuvant. The plant material is a substance comprising a physiologically acceptable plant material, especially potatoes, containing the NEPA, e.g. hepatitis B surface antigen (HBsAg). The NEPA, e.g. HBsAg in the plant results from expression by the plant of the NEPA due to genetic alteration.
摘要:
The invention provides mutant Escherichia coli heat labile (LT) and Vibrio cholerae toxin (CT) polypeptides and the polynucleotides that encode them. The mutant LT and CT polypeptides can be readily produced in plants and can be used to treat or prevent diseases caused by E. coli and V. cholera. The polypeptides are also useful as adjuvants.
摘要:
Method and apparatus for rearing insects is disclosed. Information concerning the physical and dietary needs of the insect as well as behavioral characteristics are utilized to maximize the number of larvae reared per unit surface area of diet and per unit of rearing area while minimizing the amount of labor and materials required. An enclosed rearing unit (1) is provided which can be located within an appropriate environment for rearing the insects. There are three sections within the rearing unit: 1) a diet space (2), 2) a larval space (3), and 3) a frass space (4). The diet space (2) includes an appropriate diet medium for the insects. The larval space (3) is located below the diet space (2) and includes a series of vertical partitions (12) perpendicular to and in contact with or nearly in contact with the diet medium such that the insect larvae are able to disperse themselves over the partitions (12). The frass space (4) is located below the larval space (3) such that any frass collects within the frass space (4) as it is produced and does not interfere with the larval space (3) or the diet space (2). The rearing system can further include an emergence pan (30) including an outlet for allowing emerging adults to enter an oviposition cage. The emergence pan (30) replaces the frass collection pan (24) when all of the larvae have pupated. The rearing unit is turned upside down such that the emergence pan (30) is located above the larval space (3) and the diet space (2).
摘要:
Method and apparatus for rearing insects is disclosed. Information concerning the physical and dietary needs of the insect as well as behavioral characteristics are utilized to maximize the number of larvae reared per unit surface area of diet and per unit of rearing area while minimizing the amount of labor and materials required. An enclosed rearing unit (1) is provided which can be located within an appropriate environment for rearing the insects. There are three sections within the rearing unit: 1) a diet space (2), 2) a larval space (3), and 3) a frass space (4). The diet space (2) includes an appropriate diet medium for the insects. The larval space (3) is located below the diet space (2) and includes a series of vertical partitions (12) perpendicular to and in contact with or nearly in contact with the diet medium such that the insect larvae are able to disperse themselves over the partitions (12). The frass space (4) is located below the larval space (3) such that any frass collects within the frass space (4) as it is produced and does not interfere with the larval space (3) or the diet space (2). The rearing system can further include an emergence pan (30) including an outlet for allowing emerging adults to enter an oviposition cage. The emergence pan (30) replaces the frass collection pan (24) when all of the larvae have pupated. The rearing unit is turned upside down such that the emergence pan (30) is located above the larval space (3) and the diet space (2).
摘要:
A gene coded for a polypeptide isolated from an occlusion body of a baculovirus such as Trichoplusia ni granulosis virus possessing a biological activity of enhancing virus infection of host insects by causing rapid degradation of the peritrophic membrane lining the midgut lumen of insects. Novel pesticides incorporating said gene or fragments thereof are also claimed.
摘要:
A recombinant subunit vaccine for protection dogs against infection caused by canine parvovirus comprising VP-2 protein produced during replication of a recombinant baculovirus in insect tissue culture cells or insects which are a permissive hosts for the replication of selected baculoviruses.
摘要:
Un micro-organisme hôte est modifié génétiquement de façon stable par insertion, dans l'un ou l'autre de ses emplacements chromosomiques non essentiels, d'un fragment d'ADN étranger comprenant un fragment non homologue contenant un gène lux AB d'une bactérie bioluminescente sélectionnée, telle que V. harveyi, de telle sorte que le fragment non homologue est reproduit de façon stable en tant qu'une partie du chromosome des cellules du micro-organisme hôte au fur et à mesure qu'elles se divisent dans un millieu de croissance, l'expression génétique desdits micro-organismes déclenchant la production de luciférase, qui à son tour émet de la lumière en présence d'aldéhyde servant ainsi de mesure de l'expression génétique. La bactérie Gram-positive et la bactérie Gram-négative sont toutes les deux des micro-organismes qui peuvent être modifiés de la façon décrite ci-dessus. Un radiofilm peut être employé pour mesurer la quantité de lumière émise depuis un micro-organisme grâce à l'utilisation de plusieurs gouttelettes contenant ledit micro-organisme et présentant un nombre de cellules (ou de plasmides) connu et approprié.