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Deciphering decidual leukocyte traffic with serial intravascular staining.

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Title: Deciphering decidual leukocyte traffic with serial intravascular staining.
Authors: Vazquez, Jessica, Mohamed, Mona A., Banerjee, Soma, Keding, Logan T., Koenig, Michelle R., Jaimes, Fernanda Leyva, Fisher, Rachel C., Bove, Emily M., Golos, Thaddeus G., Stanic, Aleksandar K.
Source: Frontiers in Immunology; 2024, p1-11, 11p
Subject Terms: LEUKOCYTES, KRA, KILLER cells, T cells, LABORATORY mice
Abstract: The decidual immunome is dynamic, dramatically changing its composition across gestation. Early pregnancy is dominated by decidual NK cells, with a shift towards T cells later in pregnancy. However, the degree, timing, and subsetspecific nature of leukocyte traffic between the decidua and systemic circulation during gestation remains poorly understood. Herein, we employed intravascular staining in pregnant C57BL/6J mice and cynomolgus macaques (Macaca fascicularis) to examine leukocyte traffic into the decidual basalis during pregnancy. Timed-mated or virgin mice were tail-vein injected with labelled αCD45 antibodies 24 hours and 5 minutes before sacrifice. Pregnant cynomolgus macaques (GD155) were infused with labelled αCD45 at 2 hours or 5 mins before necropsy. Decidual cells were isolated and resulting suspensions analyzed by flow cytometry. We found that the proportion of intravascular (IVAs)-negative leukocytes (cells labeled by the 24h infusion of αCD45 or unlabeled) decreased across murine gestation while recent immigrants (24h label only) increased in mid- to late-gestation. In the cynomolgus model our data confirmed differential labeling of decidual leukocytes by the infused antibody, with the 5 min infused animal having a higher proportion of IVAs+ cells compared to the 2hr infused animal. Decidual tissue sections from both macaques showed the presence of intravascularly labeled cells, either in proximity to blood vessels (5min infused animal) or deeper into decidual stroma (2hr infused animal). These results demonstrate the value of serial intravascular staining as a sensitive tool for defining decidual leukocyte traffic during pregnancy. [ABSTRACT FROM AUTHOR]
Copyright of Frontiers in Immunology is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Deciphering decidual leukocyte traffic with serial intravascular staining.
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  Data: <searchLink fieldCode="AR" term="%22Vazquez%2C+Jessica%22">Vazquez, Jessica</searchLink><br /><searchLink fieldCode="AR" term="%22Mohamed%2C+Mona+A%2E%22">Mohamed, Mona A.</searchLink><br /><searchLink fieldCode="AR" term="%22Banerjee%2C+Soma%22">Banerjee, Soma</searchLink><br /><searchLink fieldCode="AR" term="%22Keding%2C+Logan+T%2E%22">Keding, Logan T.</searchLink><br /><searchLink fieldCode="AR" term="%22Koenig%2C+Michelle+R%2E%22">Koenig, Michelle R.</searchLink><br /><searchLink fieldCode="AR" term="%22Jaimes%2C+Fernanda+Leyva%22">Jaimes, Fernanda Leyva</searchLink><br /><searchLink fieldCode="AR" term="%22Fisher%2C+Rachel+C%2E%22">Fisher, Rachel C.</searchLink><br /><searchLink fieldCode="AR" term="%22Bove%2C+Emily+M%2E%22">Bove, Emily M.</searchLink><br /><searchLink fieldCode="AR" term="%22Golos%2C+Thaddeus+G%2E%22">Golos, Thaddeus G.</searchLink><br /><searchLink fieldCode="AR" term="%22Stanic%2C+Aleksandar+K%2E%22">Stanic, Aleksandar K.</searchLink>
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  Data: Frontiers in Immunology; 2024, p1-11, 11p
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  Data: <searchLink fieldCode="DE" term="%22LEUKOCYTES%22">LEUKOCYTES</searchLink><br /><searchLink fieldCode="DE" term="%22KRA%22">KRA</searchLink><br /><searchLink fieldCode="DE" term="%22KILLER+cells%22">KILLER cells</searchLink><br /><searchLink fieldCode="DE" term="%22T+cells%22">T cells</searchLink><br /><searchLink fieldCode="DE" term="%22LABORATORY+mice%22">LABORATORY mice</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The decidual immunome is dynamic, dramatically changing its composition across gestation. Early pregnancy is dominated by decidual NK cells, with a shift towards T cells later in pregnancy. However, the degree, timing, and subsetspecific nature of leukocyte traffic between the decidua and systemic circulation during gestation remains poorly understood. Herein, we employed intravascular staining in pregnant C57BL/6J mice and cynomolgus macaques (Macaca fascicularis) to examine leukocyte traffic into the decidual basalis during pregnancy. Timed-mated or virgin mice were tail-vein injected with labelled αCD45 antibodies 24 hours and 5 minutes before sacrifice. Pregnant cynomolgus macaques (GD155) were infused with labelled αCD45 at 2 hours or 5 mins before necropsy. Decidual cells were isolated and resulting suspensions analyzed by flow cytometry. We found that the proportion of intravascular (IVAs)-negative leukocytes (cells labeled by the 24h infusion of αCD45 or unlabeled) decreased across murine gestation while recent immigrants (24h label only) increased in mid- to late-gestation. In the cynomolgus model our data confirmed differential labeling of decidual leukocytes by the infused antibody, with the 5 min infused animal having a higher proportion of IVAs+ cells compared to the 2hr infused animal. Decidual tissue sections from both macaques showed the presence of intravascularly labeled cells, either in proximity to blood vessels (5min infused animal) or deeper into decidual stroma (2hr infused animal). These results demonstrate the value of serial intravascular staining as a sensitive tool for defining decidual leukocyte traffic during pregnancy. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Frontiers in Immunology is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3389/fimmu.2023.1332943
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        Text: English
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      – TitleFull: Deciphering decidual leukocyte traffic with serial intravascular staining.
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              Text: 2024
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