Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease

Haploidentical hematopoietic stem cell transplantation (haplo-HSCT) is a widely available curative option for patients with sickle cell disease (SCD). Our original non-myeloablative haplo-HSCT trial employing post-transplant (PT) cyclophosphamide had a low incidence of GVHD but had high rejection ra...

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Autores principales: Deepali K. Bhat, Purevdorj B. Olkhanud, Arunakumar Gangaplara, Fayaz Seifuddin, Mehdi Pirooznia, Angélique Biancotto, Giovanna Fantoni, Corinne Pittman, Berline Francis, Pradeep K. Dagur, Ankit Saxena, J. Philip McCoy, Ruth M. Pfeiffer, Courtney D. Fitzhugh
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Publicado: Frontiers Media S.A. 2021
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spelling oai:doaj.org-article:24e70ed7cf154c4e8c2147f41d584da82021-12-01T18:01:56ZEarly Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease1664-322410.3389/fimmu.2021.757279https://doaj.org/article/24e70ed7cf154c4e8c2147f41d584da82021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fimmu.2021.757279/fullhttps://doaj.org/toc/1664-3224Haploidentical hematopoietic stem cell transplantation (haplo-HSCT) is a widely available curative option for patients with sickle cell disease (SCD). Our original non-myeloablative haplo-HSCT trial employing post-transplant (PT) cyclophosphamide had a low incidence of GVHD but had high rejection rates. Here, we aimed to evaluate immune reconstitution following haplo-HSCT and identify cytokines and cells associated with graft rejection/engraftment. 50 cytokines and 10 immune cell subsets were screened using multiplex-ELISA and flow cytometry, respectively, at baseline and PT-Days 30, 60, 100, and 180. We observed the most significant differences in cytokine levels between the engrafted and rejected groups at PT-Day 60, corresponding with clinical findings of secondary graft rejection. Of the 44 cytokines evaluated, plasma concentrations of 19 cytokines were different between the two groups at PT-Day 60. Factor analysis suggested two independent factors. The first factor (IL-17A, IL-10, IL-7, G-CSF, IL-2, MIP-1a, VEGF, and TGFb1 contributed significantly) was strongly associated with engraftment with OR = 2.7 (95%CI of 1.4 to 5.4), whereas the second factor (GROa and IL-18 contributed significantly) was not significantly associated with engraftment. Sufficient donor myeloid chimerism (DMC) is critical for the success of HSCT; here, we evaluated immune cells among high (H) DMC (DMC≥20%) and low (L) DMC (DMC<20%) groups along with engrafted and rejected groups. We found that early myeloid-derived suppressor cell (eMDSC) frequencies were elevated in engrafted patients and patients with HDMC at PT-Day 30 (P< 0.04 & P< 0.003, respectively). 9 of 20 patients were evaluated for the source of eMDSCs. The HDMC group had high mixed chimeric eMDSCs as compared to the LDMC group (P< 0.00001). We found a positive correlation between the frequencies of eMDSCs and Tregs at PT-Day 100 (r=0.72, P <0.0007); eMDSCs at BSL and Tregs at PT-Day 100 (r=0.63, P <0.004). Of 10 immune regulatory cells and 50 cytokines, we observed mixed chimeric eMDSCs and IL-17A, IL-10, IL-7, G-CSF, IL-2, MIP-1a, VEGF, TGFb1 as potential hits which could serve as prognostic markers in predicting allograft outcome towards engraftment following haploidentical HSCT employing post-transplant cyclophosphamide. The current findings need to be replicated and further explored in a larger cohort.Deepali K. BhatPurevdorj B. OlkhanudArunakumar GangaplaraFayaz SeifuddinMehdi PiroozniaAngélique BiancottoGiovanna FantoniCorinne PittmanBerline FrancisPradeep K. DagurAnkit SaxenaJ. Philip McCoyRuth M. PfeifferCourtney D. FitzhughFrontiers Media S.A.articledonor myeloid chimerismhaploidentical HSCTTregsIL-10sickle cell diseaseearly myeloid derived suppressor cellsImmunologic diseases. AllergyRC581-607ENFrontiers in Immunology, Vol 12 (2021)
institution DOAJ
collection DOAJ
language EN
topic donor myeloid chimerism
haploidentical HSCT
Tregs
IL-10
sickle cell disease
early myeloid derived suppressor cells
Immunologic diseases. Allergy
RC581-607
spellingShingle donor myeloid chimerism
haploidentical HSCT
Tregs
IL-10
sickle cell disease
early myeloid derived suppressor cells
Immunologic diseases. Allergy
RC581-607
Deepali K. Bhat
Purevdorj B. Olkhanud
Arunakumar Gangaplara
Fayaz Seifuddin
Mehdi Pirooznia
Angélique Biancotto
Giovanna Fantoni
Corinne Pittman
Berline Francis
Pradeep K. Dagur
Ankit Saxena
J. Philip McCoy
Ruth M. Pfeiffer
Courtney D. Fitzhugh
Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
description Haploidentical hematopoietic stem cell transplantation (haplo-HSCT) is a widely available curative option for patients with sickle cell disease (SCD). Our original non-myeloablative haplo-HSCT trial employing post-transplant (PT) cyclophosphamide had a low incidence of GVHD but had high rejection rates. Here, we aimed to evaluate immune reconstitution following haplo-HSCT and identify cytokines and cells associated with graft rejection/engraftment. 50 cytokines and 10 immune cell subsets were screened using multiplex-ELISA and flow cytometry, respectively, at baseline and PT-Days 30, 60, 100, and 180. We observed the most significant differences in cytokine levels between the engrafted and rejected groups at PT-Day 60, corresponding with clinical findings of secondary graft rejection. Of the 44 cytokines evaluated, plasma concentrations of 19 cytokines were different between the two groups at PT-Day 60. Factor analysis suggested two independent factors. The first factor (IL-17A, IL-10, IL-7, G-CSF, IL-2, MIP-1a, VEGF, and TGFb1 contributed significantly) was strongly associated with engraftment with OR = 2.7 (95%CI of 1.4 to 5.4), whereas the second factor (GROa and IL-18 contributed significantly) was not significantly associated with engraftment. Sufficient donor myeloid chimerism (DMC) is critical for the success of HSCT; here, we evaluated immune cells among high (H) DMC (DMC≥20%) and low (L) DMC (DMC<20%) groups along with engrafted and rejected groups. We found that early myeloid-derived suppressor cell (eMDSC) frequencies were elevated in engrafted patients and patients with HDMC at PT-Day 30 (P< 0.04 & P< 0.003, respectively). 9 of 20 patients were evaluated for the source of eMDSCs. The HDMC group had high mixed chimeric eMDSCs as compared to the LDMC group (P< 0.00001). We found a positive correlation between the frequencies of eMDSCs and Tregs at PT-Day 100 (r=0.72, P <0.0007); eMDSCs at BSL and Tregs at PT-Day 100 (r=0.63, P <0.004). Of 10 immune regulatory cells and 50 cytokines, we observed mixed chimeric eMDSCs and IL-17A, IL-10, IL-7, G-CSF, IL-2, MIP-1a, VEGF, TGFb1 as potential hits which could serve as prognostic markers in predicting allograft outcome towards engraftment following haploidentical HSCT employing post-transplant cyclophosphamide. The current findings need to be replicated and further explored in a larger cohort.
format article
author Deepali K. Bhat
Purevdorj B. Olkhanud
Arunakumar Gangaplara
Fayaz Seifuddin
Mehdi Pirooznia
Angélique Biancotto
Giovanna Fantoni
Corinne Pittman
Berline Francis
Pradeep K. Dagur
Ankit Saxena
J. Philip McCoy
Ruth M. Pfeiffer
Courtney D. Fitzhugh
author_facet Deepali K. Bhat
Purevdorj B. Olkhanud
Arunakumar Gangaplara
Fayaz Seifuddin
Mehdi Pirooznia
Angélique Biancotto
Giovanna Fantoni
Corinne Pittman
Berline Francis
Pradeep K. Dagur
Ankit Saxena
J. Philip McCoy
Ruth M. Pfeiffer
Courtney D. Fitzhugh
author_sort Deepali K. Bhat
title Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
title_short Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
title_full Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
title_fullStr Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
title_full_unstemmed Early Myeloid Derived Suppressor Cells (eMDSCs) Are Associated With High Donor Myeloid Chimerism Following Haploidentical HSCT for Sickle Cell Disease
title_sort early myeloid derived suppressor cells (emdscs) are associated with high donor myeloid chimerism following haploidentical hsct for sickle cell disease
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/24e70ed7cf154c4e8c2147f41d584da8
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