IFN-tau: A novel subtype I IFN1. Structural characteristics, non-ubiquitous expression, structure-function relationships, a pregnancy hormonal embryonic signal and cross-species therapeutic potentialities
Identifieur interne : 000093 ( Main/Exploration ); précédent : 000092; suivant : 000094IFN-tau: A novel subtype I IFN1. Structural characteristics, non-ubiquitous expression, structure-function relationships, a pregnancy hormonal embryonic signal and cross-species therapeutic potentialities
Auteurs : J. L. Martal [France] ; N. M. Chêne [France] ; L. P. Huynh [France] ; R. M. L'Haridon [France] ; P. B. Reinaud [France] ; M. W. Guillomot [France] ; M. A. Charlier [France] ; S. Y. Charpigny [France]Source :
- Biochimie [ 0300-9084 ] ; 1998.
Abstract
IFN-tau (IFN-τ) constitutes a new class of type I IFN which is not virus-inducible, unlike IFN-α and IFN-β, but is constitutively produced by the trophectoderm of the ruminant conceptus during a very short period in early pregnancy. It plays a pivotal role in the mechanisms of maternal recognition of pregnancy in ruminants and it displays high antiviral and antiproliferative activities across species with a prominent lack of cytotoxicity at high concentrations in vitro in cell culture and possibly in vivo. It exhibits high antiretroviral activity against HIV and exhibits immunosuppressive activity in a multiple sclerosis model and reduces embryo and fetal mortality by stimulation of IL-10 production. In this review all the biochemical and para-hormonal properties of this novel IFN-τ are described in detail: structural characteristics of proteins and genes, trophoblast expression, regulation of its expression, structure of its gene promoter, its absence in human species and in non-ruminant animals, the evolution of the IFN-τ genes, its structure-function relationships with its three-dimensional structure, structural localization of biological activities, its lack of cytotoxicity and its receptor. Surprisingly, for an IFN, IFN-τ is also a pregnancy-embryonic signal with paracrine antiluteolytic activity. In order to maintain luteal progesterone secretion, IFN-τ inhibits PGF-2α pulsatile secretion and oxytocin uterine receptivity in early pregnancy. It is believed to suppress pulsatile release of endometrial PGF-2α by preventing oxytocin and estrogen receptor expression. Additionally, it directly regulates prostaglandin metabolism and possibly the PGE:PGF-2α ratio.
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DOI: 10.1016/S0300-9084(99)80029-7
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It plays a pivotal role in the mechanisms of maternal recognition of pregnancy in ruminants and it displays high antiviral and antiproliferative activities across species with a prominent lack of cytotoxicity at high concentrations in vitro in cell culture and possibly in vivo. It exhibits high antiretroviral activity against HIV and exhibits immunosuppressive activity in a multiple sclerosis model and reduces embryo and fetal mortality by stimulation of IL-10 production. In this review all the biochemical and para-hormonal properties of this novel IFN-τ are described in detail: structural characteristics of proteins and genes, trophoblast expression, regulation of its expression, structure of its gene promoter, its absence in human species and in non-ruminant animals, the evolution of the IFN-τ genes, its structure-function relationships with its three-dimensional structure, structural localization of biological activities, its lack of cytotoxicity and its receptor. Surprisingly, for an IFN, IFN-τ is also a pregnancy-embryonic signal with paracrine antiluteolytic activity. In order to maintain luteal progesterone secretion, IFN-τ inhibits PGF-2α pulsatile secretion and oxytocin uterine receptivity in early pregnancy. It is believed to suppress pulsatile release of endometrial PGF-2α by preventing oxytocin and estrogen receptor expression. Additionally, it directly regulates prostaglandin metabolism and possibly the PGE:PGF-2α ratio.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Jouy-en-Josas</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Martal, J L" sort="Martal, J L" uniqKey="Martal J" first="J. L." last="Martal">J. L. Martal</name></region><name sortKey="Charlier, M A" sort="Charlier, M A" uniqKey="Charlier M" first="M. A." last="Charlier">M. A. Charlier</name><name sortKey="Charpigny, S Y" sort="Charpigny, S Y" uniqKey="Charpigny S" first="S. Y." last="Charpigny">S. Y. Charpigny</name><name sortKey="Chene, N M" sort="Chene, N M" uniqKey="Chene N" first="N. M." last="Chêne">N. M. Chêne</name><name sortKey="Guillomot, M W" sort="Guillomot, M W" uniqKey="Guillomot M" first="M. W." last="Guillomot">M. W. Guillomot</name><name sortKey="Huynh, L P" sort="Huynh, L P" uniqKey="Huynh L" first="L. P." last="Huynh">L. P. Huynh</name><name sortKey="L Haridon, R M" sort="L Haridon, R M" uniqKey="L Haridon R" first="R. M." last="L'Haridon">R. M. L'Haridon</name><name sortKey="Reinaud, P B" sort="Reinaud, P B" uniqKey="Reinaud P" first="P. B." last="Reinaud">P. B. Reinaud</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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