Abstract:
:The Plasmodium-infected hepatocyte has been considered necessary to prime the immune responses leading to sterile protection after vaccination with attenuated sporozoites. However, it has recently been demonstrated that priming also occurs in the skin. We wished to establish if sterile protection could be obtained in the absence of priming by infected hepatocytes. To this end, we developed a subcutaneous (s.c.) immunization protocol where few, possibly none, of the immunizing irradiated Plasmodium yoelii sporozoites infect hepatocytes, and also used CD81-deficient mice non-permissive to productive hepatocyte infections. We then compared and contrasted the patterns of priming with those obtained by intradermal immunization, where priming occurs in the liver. Using sterile immunity as a primary read-out, we exploited an inhibitor of T-cell migration, transgenic mice with conditional depletion of dendritic cells and adoptive transfers of draining lymph node-derived T cells, to provide evidence that responses leading to sterile immunity can be primed in the skin-draining lymph nodes with little, if any, contribution from the infected hepatocyte.
journal_name
EMBO Mol Medjournal_title
EMBO molecular medicineauthors
Obeid M,Franetich JF,Lorthiois A,Gego A,Grüner AC,Tefit M,Boucheix C,Snounou G,Mazier Ddoi
10.1002/emmm.201201677subject
Has Abstractpub_date
2013-02-01 00:00:00pages
250-63issue
2eissn
1757-4676issn
1757-4684journal_volume
5pub_type
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