Method and materials for development of immunological responses
protective against malarial infection
    131.
    发明授权
    Method and materials for development of immunological responses protective against malarial infection 失效
    用于发展针对疟疾感染的免疫反应的方法和材料

    公开(公告)号:US4767622A

    公开(公告)日:1988-08-30

    申请号:US524919

    申请日:1983-08-19

    摘要: Disclosed are vaccine compositions for use in developing protective immunity against infection by Plasmodium parasites. Soluble proteinaceous immunogens are isolated from the fluid culture medium of in vitro propagated plasmodial species parasites (e.g., P.falciparum) in mammalian erythrocyte culture supernatant or from washes, including hypotonic washes, of cultured erythrocytes parasitized by plasmodium. Immunogens so obtained have molecular weights in the range from about 35,000 daltons to about 85,000 daltons. Two principal immunogens of the invention have molecular weights of about 42,000 and 54,000 daltons, respectively. The water soluble immunogens are administered in a suitable carrier such as isotonic salt solution and in combination with a suitable adjuvant such as saponin or, preferably, aluminum hydroxide. Upon administration to vertebrate animals susceptible to plasmodial infection, vaccines according to the invention provoke immune responses protective against morbidity and mortality caused by, e.g., P.falciparum infection. Disclosed also are procedures for optimization of large scale plasmodial parasite growth in human erythrocyte cultures with accompanying development of late erythrocytic stage parasites in large numbers and optimization of isolatable quantities of culture medium supernatant and wash-derived immunogens.

    摘要翻译: 公开了用于开发针对疟原虫感染的保护性免疫的疫苗组合物。 可溶性蛋白质免疫原从哺乳动物红细胞培养上清液中的体外繁殖的疟原虫寄生虫(例如恶性疟原虫)的流体培养基中分离出来,或从疟原虫寄生的培养的红细胞洗涤(包括低渗洗涤)中分离。 如此获得的免疫原具有在约35,000道尔顿至约85,000道尔顿范围内的分子量。 本发明的两种主要免疫原分别具有约42,000和54,000道尔顿的分子量。 水溶性免疫原在合适的载体例如等渗盐溶液中并与合适的佐剂如皂苷或优选氢氧化铝组合施用。 在给予对疟原虫感染敏感的脊椎动物的动物时,根据本发明的疫苗引发了针对例如恶性疟原虫感染引起的发病率和死亡率的免疫应答。 还公开了用于优化人类红细胞培养物中大规模的疟原虫寄生虫生长的程序,伴随着大量晚期红细胞阶段寄生虫的发展,并优化了可分离量的培养基上清液和洗涤来源的免疫原。

    Live attenuated parasitic vaccine
    137.
    发明授权

    公开(公告)号:US11110132B2

    公开(公告)日:2021-09-07

    申请号:US16675842

    申请日:2019-11-06

    发明人: Bradford McGwire

    摘要: Disclosed herein is an avirulent live vaccine that involves a recombinant protozoan from the order Trypanosomatida having a knocked out or silenced cyclophilin gene, wherein the cyclophilin gene comprises T. cruzi cyclophilin 19 (TcCyp19) gene, or an orthologue thereof. Also disclosed is a method or inducing a protective immune response in a subject that involves administering to the subject a vaccine disclosed herein. Also disclosed is a method of treating or preventing Chagas disease, African trypanosomiasis, and/or leishmaniasis in a subject that involves administering to the subject a vaccine disclosed herein.

    Method And Device For Plankton Separation
    138.
    发明申请

    公开(公告)号:US20200216793A1

    公开(公告)日:2020-07-09

    申请号:US16824302

    申请日:2020-03-19

    申请人: Nancy Leland

    发明人: Nancy Leland

    摘要: Methods, devices and kits for the physical separation of plankton into its component parts utilizing phototactic behavior are described. The methods utilize positive phototactic behavior and negative contrast orientation of the zooplankton for maximal in situ separation of phytoplankton and zooplankton for use in further studies and evaluation of separation efficiency. The devices provide effective conditions for use in the separation of plankton into component parts.

    Method to purify coccidial oocysts from animal faeces, a system suitable for applying this method and oocysts obtained therewith

    公开(公告)号:US10689612B2

    公开(公告)日:2020-06-23

    申请号:US15300499

    申请日:2015-04-02

    申请人: Intervet inc.

    摘要: The invention pertains to a method to purify coccidial oocysts having dimensions between Dmin and Dmax from faeces comprising the steps of collecting the faeces containing the coccidial oocysts from host animals, diluting the faeces in an aqueous medium, separating a coarse fraction comprising macroscopic particulate matter from the diluted faeces and collecting an aqueous fraction containing the oocysts, characterised in that the method further comprises sieving the aqueous fraction over a first sieve deck having mesh openings to let the oocysts pass, to obtain an aqueous filtrate comprising the oocysts and a first residue comprising particles larger than the oocysts, and sieving the aqueous filtrate over a second sieve deck having mesh openings to obstruct passing of the oocysts through this sieve deck, to obtain a second residue comprising the purified oocysts and a waist filtrate comprising particles smaller than the oocysts. The invention also pertains to a system suitable for applying this method and to oocysts obtained therewith.

    Infectious plasmodium sporozoites grown in vitro

    公开(公告)号:US10441646B2

    公开(公告)日:2019-10-15

    申请号:US15858574

    申请日:2017-12-29

    申请人: SANARIA INC.

    摘要: The application is directed to in vitro-reared Plasmodium sporozoites of human host range wherein sporogony from gametocyte stage to sporozoite stage is external to mosquitoes, and methods of producing the same. Provided herein are in vitro-reared infectious Plasmodium sporozoites (SPZ) of human host range, particularly P. falciparum, P. vivax, P. ovale, P. malariae, and P. knowlesi, wherein sporogony from gametocyte stage to sporozoite stage is external to mosquitoes, and methods of producing the same.