HTRA (High temperature requirement protease A) family proteins includes HTRA1 (L56 or PRSS11), HTRA2/Omi, HTRA3 (PRSP) and HTRA4. These are oligomeric serine proteases highly conserved from bacteria to humans and are involved in a variety of biological functions including the maintenance of normal cell physiology and pathogenicity such as cell growth, apoptosis, neurodegenerative disorders, inflammation diseases and cancer. These proteins are normally expressed in placental villi during all pregnancy but their expression is found to be altered in pathological pregnancies suggesting a possible role of those proteins in the development of human placenta. Moreover, some HTRA family proteins have also been found in maternal blood and were impaired in pathological pregnancy suggesting a possible role of some of these proteins as early markers of pregnancy outcome. The aim of this review is to summarize the data currently available on the role of HTRA family proteins in pregnancy focalizing their role in pregnancy complications such as Preeclampsia (PE), IntraUterine Growth Restriction (IUGR) and Spontaneus PreTerm Birth (SPTB).
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| http://dx.doi.org/10.1016/j.tice.2021.101549 | DOI Listing |
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