Niedrig, M. and Gelderblom, H. R. and Pauli, G. and März, J. and Bickhard, H. and Wolf, Hans J. and Modrow, Susanne
Inhibition of infectious human immunodeficiency virus type 1 particle formation by Gag protein-derived peptides.
The Journal of general virology 75 ( P, pp. 1469-1474.
Sequential overlapping Gag protein-derived oligopeptides of human immunodeficiency virus type 1 (HIV-1) 22 to 24 amino acids long, were synthesized and tested in vitro for antiviral activity. Two synthetic peptides, one derived from the matrix protein p17 (NPGLLETSEGCRQ, amino acids 47 to 59) and one located in the capsid protein p24 (PAATLEEMMTA, amino acids 339 to 349) inhibited the production of infectious virus when added to HIV-1-infected cultures when used in the range of 20 to 200 micrograms/ml. As shown by thin section electron microscopy, peptide treatment resulted in the release of immature, deformed virus particles suggesting that the two peptides interfered with assembly and maturation. Other Gag protein-derived oligopeptides had little or no influence on virus production. To characterize further the functionally active regions we synthesized peptide derivatives with three consecutive amino acids substituted by alanine; they did not cause inhibition. Therefore the regions responsible for inhibition were located between amino acids 50 to 61 in p17, and 342 to 350 in p24. These observations might lead to the development of a new antiviral strategy affecting the late stage of virus replication.
|Institutions:|| Medicine > Lehrstuhl für Medizinische Mikrobiologie und Hygiene|
|Amino Acid Sequence||MESH|
|Gene Products, gag/pharmacology||MESH|
|Molecular Sequence Data||MESH|
|Sequence Homology, Amino Acid||MESH|
|Tumor Cells, Cultured||MESH|
|Virus Replication/drug effects||MESH|
|Subjects:||600 Technology > 610 Medical sciences Medicine|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||06 Apr 2011 07:55|
|Last Modified:||21 Jul 2011 02:10|