Processing of seminal plasma hCAP-18 to ALL-38 by gastricsin - A novel mechanism of generating antimicrobial peptides in vagina
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Processing of seminal plasma hCAP-18 to ALL-38 by gastricsin - A novel mechanism of generating antimicrobial peptides in vagina. / Sorensen, OE; Gram, L; Johnsen, AH; Andersson, E; Bangsboll, S; Tjabringa, GS; Hiemstra, PS; Malm, Johan; Egesten, A; Borregaard, N.
In: Journal of Biological Chemistry, Vol. 278, No. 31, 2003, p. 28540-28546.Research output: Contribution to journal › Article
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T1 - Processing of seminal plasma hCAP-18 to ALL-38 by gastricsin - A novel mechanism of generating antimicrobial peptides in vagina
AU - Sorensen, OE
AU - Gram, L
AU - Johnsen, AH
AU - Andersson, E
AU - Bangsboll, S
AU - Tjabringa, GS
AU - Hiemstra, PS
AU - Malm, Johan
AU - Egesten, A
AU - Borregaard, N
PY - 2003
Y1 - 2003
N2 - The human cathelicidin, hCAP-18, is expressed both in neutrophils and in epithelial cells. hCAP-18 is processed to the antimicrobial peptide LL-37 by proteinase 3 in neutrophils. hCAP-18 is highly expressed in the epididymis with a subsequent high concentration in seminal plasma where the protein is present in its unprocessed and antimicrobially inactive form. We report here that hCAP-18 in seminal plasma is processed to generate a 38-amino acid antimicrobial peptide ALL-38 by the prostate-derived protease gastricsin when incubated at a pH corresponding to the vaginal pH. In accordance with this, seminal plasma derived hCAP-18 was found in its processed form in the vagina following sexual intercourse. The antimicrobial activity of ALL-38 against a variety of microorganisms tested is equal to that of LL37. This enzymatic activation of a proantimicrobial substance in seminal plasma following exposure to the vaginal milieu represents a novel mechanism to prevent infection following sexual intercourse.
AB - The human cathelicidin, hCAP-18, is expressed both in neutrophils and in epithelial cells. hCAP-18 is processed to the antimicrobial peptide LL-37 by proteinase 3 in neutrophils. hCAP-18 is highly expressed in the epididymis with a subsequent high concentration in seminal plasma where the protein is present in its unprocessed and antimicrobially inactive form. We report here that hCAP-18 in seminal plasma is processed to generate a 38-amino acid antimicrobial peptide ALL-38 by the prostate-derived protease gastricsin when incubated at a pH corresponding to the vaginal pH. In accordance with this, seminal plasma derived hCAP-18 was found in its processed form in the vagina following sexual intercourse. The antimicrobial activity of ALL-38 against a variety of microorganisms tested is equal to that of LL37. This enzymatic activation of a proantimicrobial substance in seminal plasma following exposure to the vaginal milieu represents a novel mechanism to prevent infection following sexual intercourse.
UR - http://www.jbc.org/content/281/18/12999.short
U2 - 10.1074/jbc.M301608200
DO - 10.1074/jbc.M301608200
M3 - Article
C2 - 12759353
VL - 278
SP - 28540
EP - 28546
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
SN - 1083-351X
IS - 31
ER -