Polyclonal and specific antibodies mediate protective immunity against enteric helminth infection

McCoy, Kathy D; Stoel, Maaike; Stettler, Rebecca; Merky, Patrick; Fink, Katja; Senn, Beatrice M; Schaer, Corinne; Massacand, Joanna; Odermatt, Bernhard; Oettgen, Hans C; Zinkernagel, Rolf M; Bos, Nicolaas A; Hengartner, Hans; Macpherson, Andrew J; Harris, Nicola L (2008). Polyclonal and specific antibodies mediate protective immunity against enteric helminth infection. Cell host & microbe, 4(4), pp. 362-73. Cambridge, Mass.: Cell Press 10.1016/j.chom.2008.08.014

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Anti-helminth immunity involves CD4+ T cells, yet the precise effector mechanisms responsible for parasite killing or expulsion remain elusive. We now report an essential role for antibodies in mediating immunity against the enteric helminth Heligmosomoides polygyrus (Hp), a natural murine parasite that establishes chronic infection. Polyclonal IgG antibodies, present in naive mice and produced following Hp infection, functioned to limit egg production by adult parasites. Comparatively, affinity-matured parasite-specific IgG and IgA antibodies that developed only after multiple infections were required to prevent adult worm development. These data reveal complementary roles for polyclonal and affinity-matured parasite-specific antibodies in preventing enteric helminth infection by limiting parasite fecundity and providing immune protection against reinfection, respectively. We propose that parasite-induced polyclonal antibodies play a dual role, whereby the parasite is allowed to establish chronicity, while parasite load and spread are limited, likely reflecting the long coevolution of helminth parasites with their hosts.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Gastroenterology

UniBE Contributor:

Macpherson, Andrew

ISSN:

1931-3128

ISBN:

18854240

Publisher:

Cell Press

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 15:05

Last Modified:

04 May 2014 23:20

Publisher DOI:

10.1016/j.chom.2008.08.014

PubMed ID:

18854240

Web of Science ID:

000260278500010

URI:

https://boris.unibe.ch/id/eprint/28394 (FactScience: 120516)

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