2007
DOI: 10.1016/j.cell.2007.10.014
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Semen-Derived Amyloid Fibrils Drastically Enhance HIV Infection

Abstract: Sexual intercourse is the major route of HIV transmission. To identify endogenous factors that affect the efficiency of sexual viral transmission, we screened a complex peptide/protein library derived from human semen. We show that naturally occurring fragments of the abundant semen marker prostatic acidic phosphatase (PAP) form amyloid fibrils. These fibrils, termed Semen-derived Enhancer of Virus Infection (SEVI), capture HIV virions and promote their attachment to target cells, thereby enhancing the infecti… Show more

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Cited by 511 publications
(936 citation statements)
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“…23 The underlying mechanism has been postulated to involve electrostatic attraction: the positively charged fibers mediate the interaction between negatively charged viral and cellular membranes, thus suggesting the possibility of enhancing retroviral transduction in basic research and clinical applications. 23,45,46 According to this postulated mechanism, we incorporated various numbers of lysines in the peptides ( Table 2). Given that arginine has a higher pK a than lysine, we also incorporate arginine in some designs.…”
Section: Journal Of the American Chemical Societymentioning
confidence: 99%
“…23 The underlying mechanism has been postulated to involve electrostatic attraction: the positively charged fibers mediate the interaction between negatively charged viral and cellular membranes, thus suggesting the possibility of enhancing retroviral transduction in basic research and clinical applications. 23,45,46 According to this postulated mechanism, we incorporated various numbers of lysines in the peptides ( Table 2). Given that arginine has a higher pK a than lysine, we also incorporate arginine in some designs.…”
Section: Journal Of the American Chemical Societymentioning
confidence: 99%
“…The fibrils of this semen-derived enhancer of virus infection bind to human immunodeficiency virus and facilitate its entry into the body through mucous membranes [102]; here, a local application of EGCG helps to prevent human immunodeficiency virus infection [101]. Disassembly or transformation of fibrils by EGCG has also been observed for several other amyloid-forming proteins.…”
Section: Disassembly and Remodeling Of Amyloid Depositsmentioning
confidence: 99%
“…Cet aspect est particulièrement important à explorer car l'échec, dans les essais cliniques, des microbicides dans la prévention de l'infection pourrait être lié à un effet stimulateur du sperme sur l'infection, un paramètre qui n'intervient pas lors des essais d'efficacité des microbicides in vitro, généra-lement effectués sans addition de sperme. Ainsi, le liquide séminal d'hommes sains augmente l'infectivité du VIH in vitro [6] ainsi que la fixation du virus aux cellules épithéliales de la muqueuse vaginale dans des cultures ex vivo [7]. Un facteur nommé SEVI (pour semen-derived enhancer of virus infectivity) a été récemment identifié dans le sperme [6].…”
Section: Facteurs Du Sperme Modulant L'infectivité Du Vihunclassified
“…Ainsi, le liquide séminal d'hommes sains augmente l'infectivité du VIH in vitro [6] ainsi que la fixation du virus aux cellules épithéliales de la muqueuse vaginale dans des cultures ex vivo [7]. Un facteur nommé SEVI (pour semen-derived enhancer of virus infectivity) a été récemment identifié dans le sperme [6]. SEVI résulte du fractionnement naturel d'une enzyme prostatique abondante dans le sperme puis de son agrégation en fibrilles amyloïdes.…”
Section: Facteurs Du Sperme Modulant L'infectivité Du Vihunclassified