A2 gene of leishmania which is differentially-expressed in amast

Chemistry: molecular biology and microbiology – Vector – per se

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

435 693, 536 235, C12N 1563, C12N 1512

Patent

active

057337780

ABSTRACT:
Differentially expressed Leishmania genes and proteins are described. One differentially expressed gene (A2) is expressed at significantly elevated levels (more than about 10 fold higher) in the amastigote stage of the life cycle when the Leishmania organism is present in macrophages than in the free promastigote stage. The A2 gene encodes a 22 kD protein (A2 protein) that is recognized by kala-azar convalescent serum and has amino acid sequence homology with an S-antigen of Plasmodium falciparum Vietnamese isolate VI. Differentially expressed Leishmania genes and proteins have utility as vaccines, diagnostic reagents, as tools for the generation of immunological reagents and the generation of attenuated variants of Leishmania.

REFERENCES:
patent: 4687666 (1987-08-01), O'Daly
patent: 4764370 (1988-08-01), Fields et al.
patent: 4801530 (1989-01-01), Nogueira et al.
patent: 4908308 (1990-03-01), Van der Ploeg et al.
patent: 4992273 (1991-02-01), Monjour et al.
patent: 5047522 (1991-09-01), Nogueira et al.
Ellis et al. Mol. Biochem. Parasit 29:9-18 1988.
Brown et al. J. Biol. Med 4(6):365-76 1987.
Joshi et al. Mol. Biochem. Parasit. 58:345-354 1993.
WHO, Tropical Disease Report, 1989. 85-92.
Turco, S.J., and Descoteaux, A. 1992. The Lipophosphoglycan of Leishmania parasites. Annu. Rev. Microbiol. 46:65-94.
Sacks, D.L. 1989. Metacyclogenesis in Leishmania promastigotes. Exp. Parasitology. 69:100-103.
Sacks D.L., and da Silva, R.P. 1987. The generation of infective stage L. major promastigotes is associated with the cell-surface expression and release of a developmentally regulated glycolipid. J. Immunol. 139:3099-3106.
Sacks, D.L., Brodin T.N., Turco, S.J. 1990. Developmental modification of the lipophosphoglycan from L. Major promastigotes during metacyclogenesis. Mol. Biochemical Parasitol. 42:225-234.
Medina-Acosta, E., Karess, R.E., Schwartz H., and Russell, D.G. 1989. The promastigote surface protease (gp63) of Leishmania is expressed but differentially processed and localized in the amastigote stage. Mol. Biochemical Parasitol. 37:263-274.
Turco, S.J. and Sacks, D.L. 1991. Expression of stage-specific lipophosphoglycan in Leishmania major amastigotes. Mol. Biochemical Parasitol. 45:91-100.
McConville, M.J., and Blackwell J.M. 1991. Developmental changes in the glycosylated phosphatidylinositols of L. donovani J. Biol. Chem. 260:15170-15179.
Bogdan, C., Rollinghoff M., and Solbach, W. 1990. Evasion strategies of Leishmania parasites. Parasitol. Today. 6:183-187.
Modabber, F. 1989. Experiences with vaccines against cutaneous leishmaniasis: of men and mice. Parasitol. 98:S49-S60.
Joshi, M., Dwyer, D.M., and Nakhasi, H.L. 1993. Cloning and characterization of differentially expressed genes from in vitro-grown "amastigotes" of Leishmania donovani. Mol. Biochemical Parasitol. 58:345-354.
Descoteaux, A., and Matlashewski, G. 1989. c-fos and tumor necrosis factor gene expression in Leishmania donovani-infected macrophages. Mol.Cell. Biol. 9:5223-5227.
Doyle, P.S. Engel, J.C., Pimenta, P.F.P. da Silva, P. and Dwyer. 1991. Leishmania donovani: Long-term culture of axenic amastigotes at 37.degree. C. Exp. Parasitol. 73:326-334.
Sambrook, J., Fristsch, E.F., and Maniatis. 1989. Molecular cloning. A laboratory guide. Cold Spring Harbor Laboratories Press, New York. pp. 7.26-7.29.
Sambrook, J., Fritsch, E.F., and Maniatis. 1989. Molecular cloning. A laboratory guide. Cold Spring Harbor Laboratories Press, New York. pp. 10.44-10.45.
Sambrook, J., Fritsch, E.F., and Maniatis. 1989. Molecular cloning. A laboratory guide. Cold Spring Harbor Laboratories Press, New York. pp. 9.38-9.40.
Sambrook, J., Fritsch, E.F., and Maniatis. 1989. Molecular cloning. A laboratory guide. Cold Spring Harbor Laboratories Press, New York. pp. 4.48.
Cruz,A., and Beverley, S.M. 1990. Gene-replacement in parasitic protozoa. Nature 348:171-173.
"Current Protocols in Molecular Biology", Ed. by F. M. Ausubel et al, vol. 1, Section IV.
Ellis et al, Mol. and Biochem. Parentology, 29 (1988) 9-18.
Jaffe et al, Infection and Immunity, vol. 57, No. 12, 1989.
Young and Davis, Proc. Natl. Acad. Sci., Vo. 80, pp. 1194-1198, 1983.
Gene 29 (1984) 251-254.
Brown et al, J. Biol. Med 4(6) 365-76 1987.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

A2 gene of leishmania which is differentially-expressed in amast does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A2 gene of leishmania which is differentially-expressed in amast, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A2 gene of leishmania which is differentially-expressed in amast will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-51179

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.