In an early branching metazoan, bacterial colonization of the embryo is controlled by maternal antimicrobial peptides. / Fraune, Sebastian; Augustin, René; Anton-Erxleben, Friederike; Wittlieb, Jörg; Gelhaus, Christoph; Klimovich, Vladimir B.; Samoilovich, Marina P.; Bosch, Thomas C.G.
In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 42, 19.10.2010, p. 18067-18072.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In an early branching metazoan, bacterial colonization of the embryo is controlled by maternal antimicrobial peptides
AU - Fraune, Sebastian
AU - Augustin, René
AU - Anton-Erxleben, Friederike
AU - Wittlieb, Jörg
AU - Gelhaus, Christoph
AU - Klimovich, Vladimir B.
AU - Samoilovich, Marina P.
AU - Bosch, Thomas C.G.
PY - 2010/10/19
Y1 - 2010/10/19
N2 - Early embryos of many organisms develop outside the mother and are immediately confronted with myriads of potential colonizers. How these naive developmental stages control and shape the bacterial colonization is largely unknown. Here we show that early embryonic stages of the basal metazoan Hydra are able to control bacterial colonization by using maternal antimicrobial peptides. Antimicrobial peptides of the periculin family selecting for a specific bacterial colonization during embryogenesis are produced in the oocyte and in early embryos. If overexpressed in hydra ectodermal epithelial cells, periculin1a drastically reduces the bacterial load, indicating potent antimicrobial activity. Unexpectedly, transgenic polyps also revealed that periculin, in addition to bactericidal activity, changes the structure of the bacterial community. These findings delineate a role for antimicrobial peptides both in selecting particular bacterial partners during development and as important components of a "be prepared" strategy providing transgenerational protection.
AB - Early embryos of many organisms develop outside the mother and are immediately confronted with myriads of potential colonizers. How these naive developmental stages control and shape the bacterial colonization is largely unknown. Here we show that early embryonic stages of the basal metazoan Hydra are able to control bacterial colonization by using maternal antimicrobial peptides. Antimicrobial peptides of the periculin family selecting for a specific bacterial colonization during embryogenesis are produced in the oocyte and in early embryos. If overexpressed in hydra ectodermal epithelial cells, periculin1a drastically reduces the bacterial load, indicating potent antimicrobial activity. Unexpectedly, transgenic polyps also revealed that periculin, in addition to bactericidal activity, changes the structure of the bacterial community. These findings delineate a role for antimicrobial peptides both in selecting particular bacterial partners during development and as important components of a "be prepared" strategy providing transgenerational protection.
KW - Cnidaria
KW - Embryo protection
KW - Host-microbe interaction
KW - Hydra
KW - Innate immunity
UR - http://www.scopus.com/inward/record.url?scp=78149248987&partnerID=8YFLogxK
U2 - 10.1073/pnas.1008573107
DO - 10.1073/pnas.1008573107
M3 - Article
C2 - 20921390
AN - SCOPUS:78149248987
VL - 107
SP - 18067
EP - 18072
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 42
ER -
ID: 89784721