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Quintana-Vehí A, Martínez M, Zamora MJ, Rodríguez A, Vassena R, Miguel-Escalada I, Popovic M. Significant differences in efficiency between two commonly used ionophore solutions for assisted oocyte activation (AOA): a prospective comparison of ionomycin and A23187. J Assist Reprod Genet 2023:10.1007/s10815-023-02833-9. [PMID: 37247099 DOI: 10.1007/s10815-023-02833-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/18/2023] [Indexed: 05/30/2023] Open
Abstract
PURPOSE Despite the success of ICSI in treating severe male factor infertile patients, total fertilization failure (FF) still occurs in around 1-3% of ICSI cycles. To overcome FF, the use of calcium ionophores has been proposed to induce oocyte activation and restore fertilization rates. However, assisted oocyte activation (AOA) protocols and ionophores vary between laboratories, and the morphokinetic development underlying AOA remains understudied. METHODS A prospective single-center cohort study involving 81 in vitro matured metaphase-II oocytes from 66 oocyte donation cycles artificially activated by A23187 (GM508 CultActive, Gynemed) (n=42) or ionomycin (n=39). Parthenogenesis was induced, and morphokinetic parameters (tPNa, tPNf, t2-t8, tSB, and tB) were compared between the 2 study groups and a control group comprising 39 2PN-zygotes from standard ICSI cycles. RESULTS Ionomycin treatment resulted in higher activation rates compared to A23187 (38.5% vs 23.8%, p=0.15). Importantly, none of the A23187-activated parthenotes formed blastocysts. When evaluating the morphokinetic dynamics between the two ionophores, we found that tPNa and tPNf were significantly delayed in the group treated by A23187 (11.84 vs 5.31, p=0.002 and 50.15 vs 29.69, p=0.005, respectively). t2 was significantly delayed in A23187-activated parthenotes when compared to the double heterologous control embryo group. In contrast, the morphokinetic development of ionomycin-activated parthenotes was comparable to control embryos (p>0.05). CONCLUSION Our results suggest that A23187 leads to lower oocyte activation rates and profoundly affects morphokinetic timings and preimplantation development in parthenotes. Despite our limited sample size and low parthenote competence, standardization and further optimization of AOA protocols may allow wider use and improved outcomes for FF cycles.
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Affiliation(s)
| | - M Martínez
- Clínica EUGIN, C/ Balmes 236, 08006, Barcelona, Spain
| | - M J Zamora
- Clínica EUGIN, C/ Balmes 236, 08006, Barcelona, Spain
| | | | - R Vassena
- Eugin Group, 08006, Barcelona, Spain
| | | | - M Popovic
- Eugin Group, 08006, Barcelona, Spain
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Hauser KA, Garvey CN, Popovic M, Grayfer L. Biology of amphibian granulocytes - From evolutionary pressures to functional consequences. Dev Comp Immunol 2023; 140:104623. [PMID: 36563918 DOI: 10.1016/j.dci.2022.104623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/16/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Granulocyte-lineage cells are important innate immune effectors across all vertebrates. Named for conspicuous secretory granules, granulocytes have historically been studied for their antimicrobial roles. Although versions of these cells are found in all vertebrate species examined to date, disparate environmental and physiological pressures acting on distinct vertebrate classes have shaped many of the facets dictating granulocyte biology. Immune pressures further determine granulopoietic constraints, ultimately governing granulocyte functions. For amphibians that inhabit pathogen-rich aquatic environments for some or all their lives, their unique granulocyte biologies satisfy many of their antimicrobial needs. Amphibians also occupy an intermediate position in the evolution of vertebrate immune systems, using combinations of primitive (e.g., subcapsular liver) and more recently evolved (e.g., bone marrow) tissue sites for hematopoiesis and specifically, granulopoiesis. The last decade of research has revealed vertebrate granulocytes in general, and amphibian granulocytes in particular, are more complex than originally assumed. With dynamic leukocyte phenotypes, granulocyte-lineage cells are being acknowledged for their multifaceted roles beyond immunity in other physiological processes. Here we provide an overview of granulopoiesis in amphibians, highlight key differences in these processes compared to higher vertebrates, and identify open questions.
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Affiliation(s)
- Kelsey A Hauser
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, United States
| | - Christina N Garvey
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, United States
| | - Milan Popovic
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, United States
| | - Leon Grayfer
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, United States.
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Zugna D, Popovic M, Fasanelli F, Heude B, Scelo G, Richiardi L. Applied causal inference methods for sequential mediators. BMC Med Res Methodol 2022; 22:301. [PMID: 36424556 PMCID: PMC9686042 DOI: 10.1186/s12874-022-01764-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 10/19/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Mediation analysis aims at estimating to what extent the effect of an exposure on an outcome is explained by a set of mediators on the causal pathway between the exposure and the outcome. The total effect of the exposure on the outcome can be decomposed into an indirect effect, i.e. the effect explained by the mediators jointly, and a direct effect, i.e. the effect unexplained by the mediators. However finer decompositions are possible in presence of independent or sequential mediators. METHODS We review four statistical methods to analyse multiple sequential mediators, the inverse odds ratio weighting approach, the inverse probability weighting approach, the imputation approach and the extended imputation approach. These approaches are compared and implemented using a case-study with the aim to investigate the mediating role of adverse reproductive outcomes and infant respiratory infections in the effect of maternal pregnancy mental health on infant wheezing in the Ninfea birth cohort. RESULTS Using the inverse odds ratio weighting approach, the direct effect of maternal depression or anxiety in pregnancy is equal to a 59% (95% CI: 27%,94%) increased prevalence of infant wheezing and the mediated effect through adverse reproductive outcomes is equal to a 3% (95% CI: -6%,12%) increased prevalence of infant wheezing. When including infant lower respiratory infections in the mediation pathway, the direct effect decreases to 57% (95% CI: 25%,92%) and the indirect effect increases to 5% (95% CI: -5%,15%). The estimates of the effects obtained using the weighting and the imputation approaches are similar. The extended imputation approach suggests that the small joint indirect effect through adverse reproductive outcomes and lower respiratory infections is due entirely to the contribution of infant lower respiratory infections, and not to an increased prevalence of adverse reproductive outcomes. CONCLUSIONS The four methods revealed similar results of small mediating role of adverse reproductive outcomes and early respiratory tract infections in the effect of maternal pregnancy mental health on infant wheezing. The choice of the method depends on what is the effect of main interest, the type of the variables involved in the analysis (binary, categorical, count or continuous) and the confidence in specifying the models for the exposure, the mediators and the outcome.
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Affiliation(s)
- D Zugna
- grid.7605.40000 0001 2336 6580Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Via Santena 7, 10126 Turin, Italy
| | - M Popovic
- grid.7605.40000 0001 2336 6580Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Via Santena 7, 10126 Turin, Italy
| | - F Fasanelli
- grid.7605.40000 0001 2336 6580Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Via Santena 7, 10126 Turin, Italy
| | - B Heude
- grid.513249.80000 0004 8513 0030Université de Paris Cité, Inserm, INRAE, Centre of Research in Epidemiology and StatisticS (CRESS), F-75004 Paris, France
| | - G Scelo
- grid.7605.40000 0001 2336 6580Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Via Santena 7, 10126 Turin, Italy
| | - L Richiardi
- grid.7605.40000 0001 2336 6580Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Via Santena 7, 10126 Turin, Italy
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Popovic M, Lorenzon A, Sakkas D, Lledó B, Parriego M, Galain M, Pujol A, Stoop D, Rodriguez M, Pérez de la Blanca E, Rodríguez A, Vassena R. O-075 Implicit bias in diagnosing mosaicism amongst preimplantation genetic testing providers: results from a large multicenter analysis of 36395 blastocysts. Hum Reprod 2022. [DOI: 10.1093/humrep/deac104.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does the diagnosis of mosaicism affect ploidy rates across different providers offering preimplantation genetic testing for aneuploidies (PGT-A)?
Summary answer
Our analysis of 36395 blastocyst biopsies across 8 genetic testing laboratories revealed that euploidy rates were significantly higher in providers reporting low rates of mosaicism.
What is known already
Diagnoses consistent with chromosomal mosaicism have emerged as a third category of possible options for embryo ploidy outcomes in PGT-A. However, diagnosing mosaicism using current PGT-A platforms remains hindered by several biological and technical factors. This has led to substantial variability in mosaicism rates amongst genetic testing laboratories. Furthermore, reservations regarding the clinical value of diagnosing mosaicism have led to varying practices in reporting mosaic calls amongst providers. Critically, it remains unknown whether these differences impact the number of euploid embryos available for transfer. Ultimately, this may significantly affect clinical outcomes, with important implications for PGT-A patients.
Study design, size, duration
Retrospective, international, multicenter cohort study of 10875 PGT-A cycles conducted between October 2015 and October 2021. A total of 18 IVF centers associated with 8 PGT-A providers, across 5 countries and 3 continents participated in the study, which included 36395 blastocysts, tested using trophectoderm biopsy and next generation sequencing (NGS). Both autologous and donation cycles were assessed. Preimplantation genetic testing for structural rearrangements (PGT-SR) cycles were excluded from the analysis.
Participants/materials, setting, methods
Ploidy rates were analyzed using multilevel mixed linear regression. Providers were categorized (A to H), with the most frequent provider used as the reference for statistical analysis. Analyses were adjusted for maternal age, paternal age, donor status, number of embryo biopsied and day of biopsy, as appropriate. The overall significance of categorical variables in the regression models was tested using a Chi-squared test. P-values <0.05 were considered significant. Data analysis was performed using STATA, v.15.0.
Main results and the role of chance
The mean maternal age(+SD) across all providers was 36.9(±5.1). As expected, maternal age and day of biopsy had a significant impact on euploidy rates (p < 0.0001). Mosaicism rates were associated with PGT-A provider and independent of all other parameters (maternal age, paternal age, donor status, number of embryos biopsied and day of biopsy). Out of the 8 providers, 7 reported chromosomal mosaicism. Amongst these 7 providers, the rate of mosaic calls varied from 2.9% to 23.9%. After adjusting for confounders, two providers reported significantly higher mosaicism rates compared to the reference (4.2%): Provider-C 10.4% (OR = 2.43, 95%CI: 1.84-4.25) and Provider-F 23.9% (OR = 4.47, 95%CI: 2.92-6.86), while euploidy and aneuploidy rates did not differ. Conversely, the chance of diagnosing mosaicism was lower in Provider-B (OR = 0.34, 95%CI: 0.22-0.54) and Provider-E (OR = 0.59, 95%CI: 0.38-0.90). Here, aneuploidy rates were comparable to the reference, yet the chance of diagnosing a euploid embryo was significantly higher: Provider-B (OR = 2.38, 95%CI: 1.87-3.03) and Provider-E (OR = 1.62, 95%CI: 1.28-2.05). Compared to the reference, euploidy rates were also higher when mosaicism was not reported: 53.5% vs. 44.2% (OR = 2.04, 95% CI: 1.60-2.59). Moreover, the chance of having at least one euploid blastocyst available for transfer significantly increased when mosaicism was not diagnosed (OR = 1.30, 95%CI: 1.13-1.50).
Limitations, reasons for caution
Due to the retrospective nature of the study, associations can be ascertained, however causality cannot be established. Certain parameters were not available in the dataset, therefore full elucidation of all potential confounders accounting for the variability may not be possible.
Wider implications of the findings
Our findings highlight the significant impact of the genetic testing provider on PGT-A results. We demonstrate that reporting mosaicism primarily comes at the expense of euploid diagnoses, raising concerns regarding the accuracy of mosaicism predictions and their impact on clinical outcomes. Moving forward, greater standardization amongst providers will be essential.
Trial registration number
NA
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Affiliation(s)
- M Popovic
- Eugin Group- Barcelona- Spain, Basic Research Laboratory, Barcelona , Spain
| | - A Lorenzon
- Huntington Medicina Reprodutiva – Eugin Group, R&D Department, São Paulo , Brazil
| | - D Sakkas
- Boston IVF Fertility Clinic - Eugin Group, IVF Laboratory , Boston, U.S.A
| | - B Lledó
- Instituto Bernabeu, Molecular Biology, Alicante , Spain
| | - M Parriego
- Clínica Dexeus Mujer, Dexeus University Hospital, Barcelona , Spain
| | - M Galain
- Cegyr – Medicina y Genética Reproductiva - Eugin Group, Reproductive Genetics, Buenos Aires , Argentina
| | - A Pujol
- Center for Infertility and Human Reproduction CIRH - Eugin Group, IVF laboratory, Barcelona , Spain
| | - D Stoop
- Ghent University Hospital, Department of Reproductive Medicine, Ghent , Belgium
| | - M Rodriguez
- Clínica Eugin - Eugin Group, IVF Laboratory, Barcelona , Spain
| | - E Pérez de la Blanca
- Hospital Quironsalud Málaga - Eugin Group, Assisted Reproduction Unit, Málaga , Spain
| | | | - R Vassena
- Eugin Group- Barcelona- Spain, Basic Research Laboratory, Barcelona , Spain
- Eugin Group, Corporate, Barcelona , Spain
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Ayala Alvarez D, Watson P, Popovic M, Heng V, Evans M, Seuntjens J. MO-0298 TG-43 dosimetry characterization of the INTRABEAM system with spherical applicators. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02330-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Popovic M, Rico V, DeAngelis C, Lam H, Lim FMY. Online Psychological Intervention in Breast Cancer Survivors: a Review. Hong Kong Journal of Radiology 2022. [DOI: 10.12809/hkjr2217206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- M Popovic
- Odette Cancer Centre, Sunnybrook Health Science Centre, University of Toronto, Toronto, Ontario, Canada
| | - V Rico
- Odette Cancer Centre, Sunnybrook Health Science Centre, University of Toronto, Toronto, Ontario, Canada
| | - C DeAngelis
- Odette Cancer Centre, Sunnybrook Health Science Centre, University of Toronto, Toronto, Ontario, Canada
| | - H Lam
- Odette Cancer Centre, Sunnybrook Health Science Centre, University of Toronto, Toronto, Ontario, Canada
| | - FMY Lim
- Department of Oncology, Prince Margaret Hospital, Hong Kong
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Popovic A, Drljaca J, Popovic M, Miljkovic D, Marinovic J, Ljubkovic M, Kladar N, Capo I. Mitochondrial Energy Metabolism in Baby Hamster Kidney (BHK-21/C13) Cells Treated with Karnozin EXTRA®. INT J MORPHOL 2022. [DOI: 10.4067/s0717-95022022000100091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kasikovic-Lecic S, Popovic M, Krajnovic B, Bijelovic M, Tegeltija D. Nodular amyloidosis of the lung presenting as lung malignancy. SRP ARK CELOK LEK 2022. [DOI: 10.2298/sarh220915112k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Introduction. Amyloidosis is a disease associated with the extracellular
deposition of insoluble protein material called amyloid. It can be acquired
or hereditary, systemic or organ-limited. Nodular pulmonary amyloidosis is
defined as one or more tumefactive amyloid deposits in the lungs. Case
outlines. This study presents two cases that were hospitalized at the
Institute for Pulmonary Diseases to clarify the origin of lesions detected
on CT scans of lung parenchyma. In the first case, in a 78-year-old woman,
numerous non-calcified nodules were described on the chest CT. The patient
died during hospitalization, and the autopsy revealed diffusely distributed
greyish-yellow nodular lesions in the upper and middle parts of the right
lung, as well as lesions in the form of partially calcified nodules in both
lungs. Histological analysis of samples from macroscopically described
nodules confirmed nodular amyloidosis. The patient from the second presented
case is a male, 58 years old, who was operated on for rectal adenocarcinoma
three years ago. A CT scan of the lung parenchyma shows a tumor nodule
localized in the lower lobe and a nodular lesion localized in the upper lobe
of the right lung. Histological analysis confirmed that the lesion from the
lower lobe corresponds to the metastasis of colorectal cancer, while in the
lesion from the upper lobe amyloid deposits were found. Conclusion.
Pulmonary nodular amyloidosis is a rare condition, and because of the
imaging similarities it is difficult to distinguish it from malignant
nodules in the lung parenchyma. Therefore, as a part of routine practice, a
definitive diagnosis of amyloidosis needs to be confirmed by tissue biopsy.
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Affiliation(s)
- Svetlana Kasikovic-Lecic
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
| | - Milan Popovic
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
| | - Bosiljka Krajnovic
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
| | - Milorad Bijelovic
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
| | - Dragana Tegeltija
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
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Popovic M, Tegeltija D, Popovic A, Kasikovic-Lecic S, Lovrenski A. An Unusual Finding of Tumorlet Carcinoid and Endobronchial Hamartoma in the Lobar Bronchus. INT J MORPHOL 2022. [DOI: 10.4067/s0717-95022022000400990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Trivunic-Dajko S, Bogdanovic J, Andrejic-Visnjic B, Popovic M, Djolai M, Hes O. Molecular Genetic Analysis of Primary Renal Epithelial Tumours with Granular Oncocytic Cytoplasms. INT J MORPHOL 2021. [DOI: 10.4067/s0717-95022021000601719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Popovic M, Lorenzon A, Lopes AL, Sakkas D, Korkidakis A, Pujol A, Vassena R, Rodrígue. Aranda A. P–552 Delayed blastocyst development is associated with a higher risk of aneuploidy in patients of advanced maternal age. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Is delayed blastocyst development, assessed by the day of trophectoderm (TE) biopsy, associated with higher rates of aneuploidy?
Summary answer
Our findings show an association between delayed blastocyst development and poorer prognosis, in terms of euploidy rates, in patients of advanced maternal age.
What is known already
Extended culture of embryos past day 5 of development has become routine practice in all freeze-all cycles, including those applying preimplantation genetic testing for aneuploidies (PGT-A). As healthy live births have been obtained from day 6 and day 7 blastocysts, increasing the pool of embryos available for PGT-A is beneficial, particularly for patients of advanced maternal age who face higher cancellation rates. Nevertheless, the association between delayed blastocyst development and aneuploidy rates remains unclear. As current studies have reported opposing findings, detailed analysis of the chromosomal constitution of slowly developing embryos remains paramount.
Study design, size, duration
Retrospective, international, multicentre cohort study of 4211 patients undergoing preimplantation genetic testing for aneuploidy (PGT-A) from January 2016 to July 2020. We evaluated the chromosomal status of 14757 blastocysts tested using TE biopsy and next generation sequencing (NGS). Both autologous and donation cycles were included in the analysis. Cycles were excluded if they utilised preimplantation genetic testing for monogenic disorders (PGT-M) or preimplantation genetic testing for structural rearrangements (PGT-SR).
Participants/materials, setting, methods
We evaluated euploidy, aneuploidy and mosaicism rates reported in day 5 (n = 9560), day 6 (n = 4753) and day 7 (n = 262) blastocysts, stratified by SART-defined maternal age categories (<35, 35–37, 38–40, 41–42, >42). We further assessed the type and frequency of abnormalities reported in all blastocysts classified as clinically unsuitable, according to the day of biopsy. Finally, we examined the specific chromosomes affected in embryos diagnosed with a single uniform (n = 3882) or single mosaic (n = 518) abnormality.
Main results and the role of chance
The mean maternal age within our patient cohort was 39.9±3.7. Overall, slowly developing blastocysts were significantly more likely to be classified as clinically unsuitable (60.6%) compared to day 5 embryos (55.2%; p < 0.0001). This correlation was also observed when stratified by age, with the exception of the <35 age group (p = 0.25). Markedly, the risk of aneuploidy in slowly developing blastocysts became progressively higher with advancing maternal age (p < 0.0001). We did not observe any significant differences in the types of abnormalities diagnosed in slowly developing embryos compared to day 5 blastocysts. Nevertheless, abnormalities affecting all chromosomes were present at the blastocyst stage. Single trisomies and monosomies were the most frequent across all age groups, and were equally prevalent in day 5, 6 and 7 blastocysts. These most commonly affected chromosomes 16, 22, 21 and 15. We observed no significant differences in the incidence of segmental aneuploidies in relation to the day of biopsy, across all age groups. When considered separately, day 7 blastocysts presented with higher rates of structural aberrations, however low numbers limited statistical power. Finally, delayed blastocyst development was not associated with higher mosaicism rates (p = 0.79). Interestingly, single mosaic trisomies and monosomies were most frequently associated with chromosome 19.
Limitations, reasons for caution
Due to the retrospective nature of the study, full elucidation of all potential confounders may not be possible in all instances. The low number of day 7 blastocysts limited statistical power. As such, the results from day 6 and day 7 embryos were evaluated together.
Wider implications of the findings: Our findings offer an important clinical resource for counselling patients of advanced maternal age. Maternal aging may be associated with a higher incidence of aneuploidy in slowly developing blastocysts. Nevertheless, extended culture increases the pool of biopsiable blastocysts, ultimately improving the chance of having a euploid embryo for transfer.
Trial registration number
NA
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Affiliation(s)
- M Popovic
- Clinica Eugin, Research and Development, Barcelona, Spain
| | - A Lorenzon
- Huntington Medicina Reprodutiva, IVF Laboratory, São Paulo, Brazil
| | - A L Lopes
- Huntington Medicina Reprodutiva, IVF Laboratory, São Paulo, Brazil
| | - D Sakkas
- Boston IVF Fertility Clinic, IVF Laboratory, Waltham, USA
| | - A Korkidakis
- Boston IVF Fertility Clinic, Clinical Department, Waltham, USA
- Beth Israel Deaconess Medical Center- Harvard Medical School, Department of Obstetrics and Gynecology, Boston, USA
| | - A Pujol
- Center for Infertility and Human Reproduction CIRH, IVF laboratory, Barcelona, Spain
| | - R Vassena
- Clinica Eugin, Research and Development, Barcelona, Spain
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Vassena R, Lorenzon A, Lopes AL, Sakkas D, Korkidakis A, Pujol A, Rodrigue. Aranda A, Popovic M. P–551 Blastocyst cohort size is not associated with embryo aneuploidy: comprehensive multi-centre data from current preimplantation genetic testing cycles. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Does blastocyst cohort size impact aneuploidy rates, evaluated by next generation sequencing (NGS)?
Summary answer
Embryo aneuploidy rates were independent of blastocyst cohort size across all patient ages.
What is known already
The effects of ovarian response on oocyte and embryo quality remain controversial. Several studies have proposed that a high response to ovarian stimulation may negatively impact oocyte competence. Alternatively, irrespective of maternal age, a poor ovarian response may potentially compromise embryo quality. Using blastocyst cohort size as an indirect measure of ovarian response, previous studies applying array comparative genomic hybridisation (aCGH) have demonstrated that the number of embryos available for biopsy does not impact embryo aneuploidy rates. Nevertheless, these findings remain to be confirmed in a comprehensive cohort, using current approaches for preimplantation genetic testing for aneuploidies (PGT-A).
Study design, size, duration
Retrospective, international, cohort study of 3998 patients from 16 clinics undergoing PGT-A from 2016–2020. We evaluated 11665 blastocysts, tested using trophectoderm (TE) biopsy and next generation sequencing (NGS). To eliminate bias of multiple treatments, we considered only the first PGT-A cycle for all patients. Both autologous and donation cycles were included in the analysis. Cycles were excluded if they utilised preimplantation genetic testing for monogenic disorders (PGT-M) or preimplantation genetic testing for structural rearrangements (PGT-SR).
Participants/materials, setting, methods
We evaluated aneuploidy and mosaicism rates, as well as the proportion of patients who had at least one euploid embryo suitable for transfer. Findings were stratified according to SART-defined maternal age groups, <35 (n = 698/2622 patients/blastocysts), 35–37 (n = 988/3141 patients/blastoycsts), 38–40 (n = 1447/3939 patients/blastocysts), 41–42 (653/1562 patients/blastocysts) and >42 (212/401 patients/blastocysts) and blastoycst cohort size (1–2, 3–5, 6–9 and 10 or more biopsied blastocysts).
Main results and the role of chance
The mean maternal age was 37.0±3.7. The overall embryo aneuploidy rate was 50.6% (5904/11665), while mosaicism was established in 4.0% (469/11665) of blastocysts. As expected, the proportion of aneuploid embryos increased steadily with advancing maternal age (31.8%, 41.5%, 58.4%, 71.2%, 87.8%; p < 0.0001), while mosaicism rates did not vary significantly (p = 0.2). Within each age group, we observed no association between the number of blastocysts biopsied and aneuploidy or mosaicism rates. However, as previously suggested, the chance of having at least one euploid embryo increased linearly with the number of embryos biopsied. We observed that young patients (<35) with 1–2 blastocysts had a 70.4% of having at least one embryo suitable for transfer, which increased to 96.4% and 99.2% with 3–5 and 6–9 blastocysts, respectively. Similar trends were observed in the 36–38 and 39–40 age groups. Patients in the 40–41 age group had a significantly lower chance of having a suitable embryo for transfer. Nevertheless, the chance increased from 27.2% with 1–2 embryos to 61.2% with 3–5 blastocysts. Patients with >10 embryos had at least one euploid embryo in 100% of cases, across all ages. Albeit, the numbers of patients within this category was low, and decreased significantly with advancing maternal age.
Limitations, reasons for caution
While blastocyst cohort size is considered to be an indirect measure of ovarian reserve, the number of oocytes retrieved was not evaluated. Our study only included the first PGT-A cycle for all patients. Subsequent, alterations in stimulation protocols may have resulted in an improved response in some patients.
Wider implications of the findings: The comprehensive nature of the study, based on current PGT-A approaches and a large number of cycles across 16 centres increases clinical confidence in the notion that ovarian response is independent of embryo aneuploidy. Importantly, our findings may serve as a valuable clinical resource to guide patient counselling strategies.
Trial registration number
NA
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Affiliation(s)
- R Vassena
- Clinica Eugin, R&D, Barcelona, Spain
| | - A Lorenzon
- Huntington Medicina Reprodutiva, IVF Laboratory, Sao Paulo, Brazil
| | - A L Lopes
- Huntington Medicina Reprodutiva, IVF Laboratory, Sao Paulo, Brazil
| | - D Sakkas
- Boston IVF Fertility Clinic, IVF Laboratory, Waltham, USA
| | | | - A Pujol
- Center for Infertility and Human Reproduction CIRH, IVF Laboratory, Barcelona, Spain
| | | | - M Popovic
- Clinica Eugin, Research and Development, Barcelona, Spain
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13
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Bekaert B, Boel A, Popovic M, Stamatiadis P, Chuva de Sousa Lopes SM, De Sutter P, Menten B, Stoop D, Coucke P, Heindryckx B. O-090 Correcting a PLCζ mutation in the human germ line to overcome hereditary infertility. Hum Reprod 2021. [DOI: 10.1093/humrep/deab125.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Can clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 gene editing result in the correction of a single base pair substitution that causes male infertility?
Summary answer
CRISPR/Cas9 administration during intracytoplasmic sperm injection (ICSI) leads to correction attempts of mutant phospholipase C zeta (PLCζ), howeverc loss-of-heterozygosity (LOH).
What is known already
Failed fertilization after ICSI can be caused by mutations in the sperm-related oocyte factor PLCζ which can be overcome by assisted oocyte activation (AOA). In this way, children may inherit the infertility-causing mutation. Mutation transmission can be overcome through CRISPR/Cas9 delivery during ICSI. In previous studies using CRISPR/Cas9 in the human germline for mutation correction, loss-of-heterozygosity (LOH, loss of the allele of one of the parents) was observed. Two different explanations were given, namely partial or complete paternal chromosomal loss or the correction of the mutation by using the maternal wild-type allele instead of the exogeneous supplied repair template.
Study design, size, duration
We injected a gRNA-Cas9 protein complex to target the PLCζ mutant allele, a repair template harboring the desired nucleotide substitution and an additional synonymous variant to track template usage, together with patient’s sperm. To overcome fertilization failure, AOA was applied during ICSI. After a culture period of maximal 6 days the embryos were collected. At day 3, some embryos were dissociated in individual blastomeres. The extracted DNA was analyzed through different genetic sequencing techniques.
Participants/materials, setting, methods
Donated sperm of a patient experiencing complete fertilization failure after routine ICSI, harboring a heterozygous base pair substitution in PLCZ1 (c.136-1G>C), was utilized. Sperm was injected in donated in vitro matured oocytes or in vivo matured oocytes containing clusters of smooth endoplasmic reticulum. Next-generation sequencing was used to assess correction potential. Short tandem repeat (STR) and single nucleotide polymorphism (SNP) assays were used to determine whether the sperm contained the mutation and to evaluate LOH.
Main results and the role of chance
CRISPR/Cas9 injections had no significant impact (p > 0.05) on embryonic development. Due to the heterozygous nature of the mutation, 47% (27/58) of the embryos originated from mutated sperm injection. The CRISPR components showed a high specificity with absence of insertions/deletions in 97% of the embryos originating from wild-type sperm (n = 31). Embryos originating from mutant sperm (n = 27) fall into three categories:(1) 22% showed the untargeted mutant allele, (2) 52% showed additional mutagenesis and (3) 26% showed the wild-type allele, which could be explained by correction. Mosaicism, defined as various editing events, was present in 17% (1), 21% (2) and 71% (3) of the embryos. The low occurrence of the synonymous variant, incorporated in the repair template, suggests that the template is not used during correction attempts. In only 29% (2/7) and 14% (1/7) of the ‘corrected embryos’, respectively long (>18Mb) or medium width LOH (4Mb) was observed through STR analysis. SNP analysis in closer proximity showed in 71% (5/7) of the embryos LOH, even in the absence of LOH through STR, suggesting also the occurrence of short width LOH. These results will be studied in more detail before definitive conclusions can be made. Chromosomal LOH will be studied by ddRADseq.
Limitations, reasons for caution
The occurrence of mosaicism and LOH might complicate the use of traditional CRISPR/Cas9 in human embryos and should be studied in detail to draw definite conclusions on its potential future use. To this end, genomic data have been produced from both individual blastomeres and whole-embryos which will be further analyzed.
Wider implications of the findings
Our findings demonstrate caution to use CRISPR/Cas9 to correct mutations in the germ line. They seem to contradict other reports that show predominant lack of mosaicism and presence of long width LOH. A deeper evaluation will be undertaken to define the length and type of LOH in this study.
Trial registration number
Not Applicable
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Affiliation(s)
- B Bekaert
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | - A Boel
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | - M Popovic
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | - P Stamatiadis
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | | | - P De Sutter
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | - B Menten
- UGhent, Department of Biomolecular Medicine, Ghent, Belgium
| | - D Stoop
- UGhent, Department of Human structure and repair, Ghent, Belgium
| | - P Coucke
- UGhent, Department of Biomolecular Medicine, Ghent, Belgium
| | - B Heindryckx
- UGhent, Department of Human structure and repair, Ghent, Belgium
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14
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Stamatiadis P, Boel A, Cosemans G, Popovic M, Bekaert B, Guggilla R, Tang M, De Sutter P, Van Nieuwerburgh F, Menten B, Stoop D, Chuva de Sousa Lopes SM, Coucke P, Heindryckx B. Comparative analysis of mouse and human preimplantation development following POU5F1 CRISPR/Cas9 targeting reveals interspecies differences. Hum Reprod 2021; 36:1242-1252. [PMID: 33609360 DOI: 10.1093/humrep/deab027] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 01/14/2021] [Indexed: 12/26/2022] Open
Abstract
STUDY QUESTION What is the role of POU class 5 homeobox 1 (POU5F1) in human preimplantation development and how does it compare with the mouse model? SUMMARY ANSWER POU5F1 is required for successful development of mouse and human embryos to the blastocyst stage as knockout embryos exhibited a significantly lower blastocyst formation rate, accompanied by lack of inner cell mass (ICM) formation. WHAT IS KNOWN ALREADY Clustered regularly interspaced short palindromic repeats-CRISPR associated genes (CRISPR-Cas9) has previously been used to examine the role of POU5F1 during human preimplantation development. The reported POU5F1-targeted blastocysts always retained POU5F1 expression in at least one cell, because of incomplete CRISPR-Cas9 editing. The question remains of whether the inability to obtain fully edited POU5F1-targeted blastocysts in human results from incomplete editing or the actual inability of these embryos to reach the blastocyst stage. STUDY DESIGN, SIZE, DURATION The efficiency of CRISPR-Cas9 to induce targeted gene mutations was first optimized in the mouse model. Two CRISPR-Cas9 delivery methods were compared in the B6D2F1 strain: S-phase injection (zygote stage) (n = 135) versus metaphase II-phase (M-phase) injection (oocyte stage) (n = 23). Four control groups were included: non-injected media-control zygotes (n = 43)/oocytes (n = 48); sham-injected zygotes (n = 45)/oocytes (n = 47); Cas9-protein injected zygotes (n = 23); and Cas9 protein and scrambled guide RNA (gRNA)-injected zygotes (n = 27). Immunofluorescence analysis was performed in Pou5f1-targeted zygotes (n = 37), media control zygotes (n = 19), and sham-injected zygotes (n = 15). To assess the capacity of Pou5f1-null embryos to develop further in vitro, additional groups of Pou5f1-targeted zygotes (n = 29) and media control zygotes (n = 30) were cultured to postimplantation stages (8.5 dpf). Aiming to identify differences in developmental capacity of Pou5f1-null embryos attributed to strain variation, zygotes from a second mouse strain-B6CBA (n = 52) were targeted. Overall, the optimized methodology was applied in human oocytes following IVM (metaphase II stage) (n = 101). The control group consisted of intracytoplasmically sperm injected (ICSI) IVM oocytes (n = 33). Immunofluorescence analysis was performed in human CRISPR-injected (n = 10) and media control (n = 9) human embryos. PARTICIPANTS/MATERIALS, SETTING, METHODS A gRNA-Cas9 protein mixture targeting exon 2 of Pou5f1/POU5F1 was microinjected in mouse oocytes/zygotes or human IVM oocytes. Reconstructed embryos were cultured for 4 days (mouse) or 6.5 days (human) in sequential culture media. An additional group of mouse-targeted zygotes was cultured to postimplantation stages. Embryonic development was assessed daily, with detailed scoring at late blastocyst stage. Genomic editing was assessed by immunofluorescence analysis and next-generation sequencing. MAIN RESULTS AND THE ROLE OF CHANCE Genomic analysis in mouse revealed very high editing efficiencies with 95% of the S-Phase and 100% of the M-Phase embryos containing genetic modifications, of which 89.47% in the S-Phase and 84.21% in the M-Phase group were fully edited. The developmental capacity was significantly compromised as only 46.88% embryos in the S-Phase and 19.05% in the M-Phase group reached the blastocyst stage, compared to 86.36% in control M-Phase and 90.24% in control S-Phase groups, respectively. Immunofluorescence analysis confirmed the loss of Pou5f1 expression and downregulation of the primitive marker SRY-Box transcription factor (Sox17). Our experiments confirmed the requirement of Pou5f1 expression for blastocyst development in the second B6CBA strain. Altogether, our data obtained in mouse reveal that Pou5f1 expression is essential for development to the blastocyst stage. M-Phase injection in human IVM oocytes (n = 101) similarly resulted in 88.37% of the POU5F1-targeted embryos being successfully edited. The developmental capacity of generated embryos was compromised from the eight-cell stage onwards. Only 4.55% of the microinjected embryos reached the late blastocyst stage and the embryos exhibited complete absence of ICM and an irregular trophectoderm cell layer. Loss of POU5F1 expression resulted in absence of SOX17 expression, as in mouse. Interestingly, genetic mosaicism was eliminated in a subset of targeted human embryos (9 out of 38), three of which developed into blastocysts. LIMITATIONS, REASONS FOR CAUTION One of the major hurdles of CRISPR-Cas9 germline genome editing is the occurrence of mosaicism, which may complicate phenotypic analysis and interpretation of developmental behavior of the injected embryos. Furthermore, in this study, spare IVM human oocytes were used, which may not recapitulate the developmental behavior of in vivo matured oocytes. WIDER IMPLICATIONS OF THE FINDINGS Comparison of developmental competency following CRISPR-Cas-mediated gene targeting in mouse and human may be influenced by the selected mouse strain. Gene targeting by CRISPR-Cas9 is subject to variable targeting efficiencies. Therefore, striving to reduce mosaicism can provide novel molecular insights into mouse and human embryogenesis. STUDY FUNDING/COMPETING INTEREST(S) The research was funded by the Ghent University Hospital and Ghent University and supported by the FWO-Vlaanderen (Flemish fund for scientific research, Grant no. G051516N), and Hercules funding (FWO.HMZ.2016.00.02.01). The authors declare no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- P Stamatiadis
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - A Boel
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - G Cosemans
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - B Bekaert
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - R Guggilla
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - M Tang
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - F Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Ghent University, 9000 Ghent, Belgium
| | - B Menten
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - D Stoop
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - S M Chuva de Sousa Lopes
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium.,Department of Anatomy and Embryology, Leiden University Medical Centre, Leiden, 2333 ZC, the Netherlands
| | - P Coucke
- Center for Medical Genetics, Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
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15
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Tang M, Popovic M, Stamatiadis P, Van der Jeught M, Van Coster R, Deforce D, De Sutter P, Coucke P, Menten B, Stoop D, Boel A, Heindryckx B. Germline nuclear transfer in mice may rescue poor embryo development associated with advanced maternal age and early embryo arrest. Hum Reprod 2021; 35:1562-1577. [PMID: 32613230 DOI: 10.1093/humrep/deaa112] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 04/06/2020] [Indexed: 01/06/2023] Open
Abstract
STUDY QUESTION Can pronuclear transfer (PNT) or maternal spindle transfer (ST) be applied to overcome poor embryo development associated with advanced maternal age or early embryo arrest in a mouse model? SUMMARY ANSWER Both PNT and ST may have the potential to restore embryonic developmental potential in a mouse model of reproductive ageing and embryonic developmental arrest. WHAT IS KNOWN ALREADY Germline nuclear transfer (NT) techniques, such as PNT and ST, are currently being applied in humans to prevent the transmission of mitochondrial diseases. Yet, there is also growing interest in the translational use of NT for treating infertility and improving IVF outcomes. Nevertheless, direct scientific evidence to support such applications is currently lacking. Moreover, it remains unclear which infertility indications may benefit from these novel assisted reproductive technologies. STUDY DESIGN, SIZE, DURATION We applied two mouse models to investigate the potential of germline NT for overcoming infertility. Firstly, we used a model of female reproductive ageing (B6D2F1 mice, n = 155), with ages ranging from 6 to 8 weeks (young), 56 (aged) to 70 weeks (very-aged), corresponding to a maternal age of <30, ∼36 and ∼45 years in humans, respectively. Secondly, we used NZB/OlaHsd female mice (7-14 weeks, n = 107), as a model of early embryo arrest. This mouse strain exhibits a high degree of two-cell block. Metaphase II (MII) oocytes and zygotes were retrieved following superovulation. PARTICIPANTS/MATERIALS, SETTING, METHODS Ovarian reserve was assessed by histological analysis in the reproductive-aged mice. Mitochondrial membrane potential (△Ψm) was measured by JC-1 staining in MII oocytes, while spindle-chromosomal morphology was examined by confocal microscopy. Reciprocal ST and PNT were performed by transferring the meiotic spindle or pronuclei (PN) from unfertilised or fertilised oocytes (after ICSI) to enucleated oocytes or zygotes between aged or very-aged and young mice. Similarly, NT was also conducted between NZB/OlaHsd (embryo arrest) and B6D2F1 (non-arrest control) mice. Finally, the effect of cytoplasmic transfer (CT) was examined by injecting a small volume (∼5%) of cytoplasm from the oocytes/zygotes of young (B6D2F1) mice to the oocytes/zygotes of aged or very-aged mice or embryo-arrest mice. Overall, embryonic developmental rates of the reconstituted PNT (n = 572), ST (n = 633) and CT (n = 336) embryos were assessed to evaluate the efficiency of these techniques. Finally, chromosomal profiles of individual NT-generated blastocysts were evaluated using next generation sequencing. MAIN RESULTS AND THE ROLE OF CHANCE Compared to young mice, the ovarian reserve in aged and very-aged mice was severely diminished, reflected by a lower number of ovarian follicles and a reduced number of ovulated oocytes (P < 0.001). Furthermore, we reveal that the average △Ψm in both aged and very-aged mouse oocytes was significantly reduced compared to young mouse oocytes (P < 0.001). In contrast, the average △Ψm in ST-reconstructed oocytes (very-aged spindle and young cytoplast) was improved in comparison to very-aged mouse oocytes (P < 0.001). In addition, MII oocytes from aged and very-aged mice exhibited a higher rate of abnormalities in spindle assembly (P < 0.05), and significantly lower fertilisation (60.7% and 45.3%) and blastocyst formation rates (51.4% and 38.5%) following ICSI compared to young mouse oocytes (89.7% and 87.3%) (P < 0.001). Remarkably, PNT from zygotes obtained from aged or very-aged mice to young counterparts significantly improved blastocyst formation rates (74.6% and 69.2%, respectively) (P < 0.05). Similarly, both fertilisation and blastocyst rates were significantly increased after ST between aged and young mice followed by ICSI (P < 0.05). However, we observed no improvement in embryo development rates when performing ST from very-aged to young mouse oocytes following ICSI (P > 0.05). In the second series of experiments, we primarily confirmed that the majority (61.8%) of in vivo zygotes obtained from NZB/OlaHsd mice displayed two-cell block during in vitro culture, coinciding with a significantly reduced blastocyst formation rate compared to the B6D2F1 mice (13.5% vs. 90.7%; P < 0.001). Notably, following the transfer of PN from the embryo-arrest (NZB/OlaHsd) zygotes to enucleated non-arrest (B6D2F1) counterparts, most reconstructed zygotes developed beyond the two-cell stage, leading to a significantly increased blastocyst formation rate (89.7%) (P < 0.001). Similar findings were obtained after implementing ST between NZB/OlaHsd and B6D2F1 mice, followed by ICSI. Conversely, the use of CT did not improve embryo development in reproductive-age mice nor in the embryo-arrest mouse model (P > 0.05). Surprisingly, chromosomal analysis revealed that euploidy rates in PNT and ST blastocysts generated following the transfer of very-aged PN to young cytoplasts and very-aged spindles to young cytoplasts were comparable to ICSI controls (with young mouse oocytes). A high euploidy rate was also observed in the blastocysts obtained from either PNT or ST between young mice. Conversely, the transfer of young PN and young spindles into very-aged cytoplasts led to a higher rate of chromosomal abnormalities in both PNT and ST blastocysts. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The limited number of blastocysts analysed warrants careful interpretation. Furthermore, our observations should be cautiously extrapolated to humans given the inherent differences between mice and women in regards to various biological processes, including centrosome inheritance. The findings suggest that ST or PNT procedures may be able to avoid aneuploidies generated during embryo development, but they are not likely to correct aneuploidies already present in some aged MII oocytes. WIDER IMPLICATIONS OF THE FINDINGS To our knowledge, this is the first study to evaluate the potential of PNT and ST in the context of advanced maternal age and embryonic developmental arrest in a mouse model. Our data suggest that PNT, and to a lesser extent ST, may represent a novel reproductive strategy to restore embryo development for these indications. STUDY FUNDING/COMPETING INTEREST(S) M.T. is supported by grants from the China Scholarship Council (CSC) (Grant no. 201506160059) and the Special Research Fund from Ghent University (Bijzonder Onderzoeksfonds, BOF) (Grant no. 01SC2916 and no. 01SC9518). This research is also supported by the FWO-Vlaanderen (Flemish fund for scientific research, Grant no. G051017N, G051516N and G1507816N). The authors declare no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- M Tang
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - P Stamatiadis
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - M Van der Jeught
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - R Van Coster
- Department of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent 9000, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - P Coucke
- Center for Medical Genetics Ghent (CMGG), Department of Biomolecular Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - B Menten
- Center for Medical Genetics Ghent (CMGG), Department of Biomolecular Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - D Stoop
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - A Boel
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent 9000, Belgium
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16
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Abi B, Albahri T, Al-Kilani S, Allspach D, Alonzi LP, Anastasi A, Anisenkov A, Azfar F, Badgley K, Baeßler S, Bailey I, Baranov VA, Barlas-Yucel E, Barrett T, Barzi E, Basti A, Bedeschi F, Behnke A, Berz M, Bhattacharya M, Binney HP, Bjorkquist R, Bloom P, Bono J, Bottalico E, Bowcock T, Boyden D, Cantatore G, Carey RM, Carroll J, Casey BCK, Cauz D, Ceravolo S, Chakraborty R, Chang SP, Chapelain A, Chappa S, Charity S, Chislett R, Choi J, Chu Z, Chupp TE, Convery ME, Conway A, Corradi G, Corrodi S, Cotrozzi L, Crnkovic JD, Dabagov S, De Lurgio PM, Debevec PT, Di Falco S, Di Meo P, Di Sciascio G, Di Stefano R, Drendel B, Driutti A, Duginov VN, Eads M, Eggert N, Epps A, Esquivel J, Farooq M, Fatemi R, Ferrari C, Fertl M, Fiedler A, Fienberg AT, Fioretti A, Flay D, Foster SB, Friedsam H, Frlež E, Froemming NS, Fry J, Fu C, Gabbanini C, Galati MD, Ganguly S, Garcia A, Gastler DE, George J, Gibbons LK, Gioiosa A, Giovanetti KL, Girotti P, Gohn W, Gorringe T, Grange J, Grant S, Gray F, Haciomeroglu S, Hahn D, Halewood-Leagas T, Hampai D, Han F, Hazen E, Hempstead J, Henry S, Herrod AT, Hertzog DW, Hesketh G, Hibbert A, Hodge Z, Holzbauer JL, Hong KW, Hong R, Iacovacci M, Incagli M, Johnstone C, Johnstone JA, Kammel P, Kargiantoulakis M, Karuza M, Kaspar J, Kawall D, Kelton L, Keshavarzi A, Kessler D, Khaw KS, Khechadoorian Z, Khomutov NV, Kiburg B, Kiburg M, Kim O, Kim SC, Kim YI, King B, Kinnaird N, Korostelev M, Kourbanis I, Kraegeloh E, Krylov VA, Kuchibhotla A, Kuchinskiy NA, Labe KR, LaBounty J, Lancaster M, Lee MJ, Lee S, Leo S, Li B, Li D, Li L, Logashenko I, Lorente Campos A, Lucà A, Lukicov G, Luo G, Lusiani A, Lyon AL, MacCoy B, Madrak R, Makino K, Marignetti F, Mastroianni S, Maxfield S, McEvoy M, Merritt W, Mikhailichenko AA, Miller JP, Miozzi S, Morgan JP, Morse WM, Mott J, Motuk E, Nath A, Newton D, Nguyen H, Oberling M, Osofsky R, Ostiguy JF, Park S, Pauletta G, Piacentino GM, Pilato RN, Pitts KT, Plaster B, Počanić D, Pohlman N, Polly CC, Popovic M, Price J, Quinn B, Raha N, Ramachandran S, Ramberg E, Rider NT, Ritchie JL, Roberts BL, Rubin DL, Santi L, Sathyan D, Schellman H, Schlesier C, Schreckenberger A, Semertzidis YK, Shatunov YM, Shemyakin D, Shenk M, Sim D, Smith MW, Smith A, Soha AK, Sorbara M, Stöckinger D, Stapleton J, Still D, Stoughton C, Stratakis D, Strohman C, Stuttard T, Swanson HE, Sweetmore G, Sweigart DA, Syphers MJ, Tarazona DA, Teubner T, Tewsley-Booth AE, Thomson K, Tishchenko V, Tran NH, Turner W, Valetov E, Vasilkova D, Venanzoni G, Volnykh VP, Walton T, Warren M, Weisskopf A, Welty-Rieger L, Whitley M, Winter P, Wolski A, Wormald M, Wu W, Yoshikawa C. Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm. Phys Rev Lett 2021; 126:141801. [PMID: 33891447 DOI: 10.1103/physrevlett.126.141801] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g-2 Experiment for the positive muon magnetic anomaly a_{μ}≡(g_{μ}-2)/2. The anomaly is determined from the precision measurements of two angular frequencies. Intensity variation of high-energy positrons from muon decays directly encodes the difference frequency ω_{a} between the spin-precession and cyclotron frequencies for polarized muons in a magnetic storage ring. The storage ring magnetic field is measured using nuclear magnetic resonance probes calibrated in terms of the equivalent proton spin precession frequency ω[over ˜]_{p}^{'} in a spherical water sample at 34.7 °C. The ratio ω_{a}/ω[over ˜]_{p}^{'}, together with known fundamental constants, determines a_{μ}(FNAL)=116 592 040(54)×10^{-11} (0.46 ppm). The result is 3.3 standard deviations greater than the standard model prediction and is in excellent agreement with the previous Brookhaven National Laboratory (BNL) E821 measurement. After combination with previous measurements of both μ^{+} and μ^{-}, the new experimental average of a_{μ}(Exp)=116 592 061(41)×10^{-11} (0.35 ppm) increases the tension between experiment and theory to 4.2 standard deviations.
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Affiliation(s)
- B Abi
- University of Oxford, Oxford, United Kingdom
| | - T Albahri
- University of Liverpool, Liverpool, United Kingdom
| | - S Al-Kilani
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - D Allspach
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - L P Alonzi
- University of Washington, Seattle, Washington, USA
| | | | - A Anisenkov
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - F Azfar
- University of Oxford, Oxford, United Kingdom
| | - K Badgley
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Baeßler
- University of Virginia, Charlottesville, Virginia, USA
| | - I Bailey
- Lancaster University, Lancaster, United Kingdom
| | - V A Baranov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - E Barlas-Yucel
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - T Barrett
- Cornell University, Ithaca, New York, USA
| | - E Barzi
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Basti
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | | | - A Behnke
- Northern Illinois University, DeKalb, Illinois, USA
| | - M Berz
- Michigan State University, East Lansing, Michigan, USA
| | | | - H P Binney
- University of Washington, Seattle, Washington, USA
| | | | - P Bloom
- North Central College, Naperville, Illinois, USA
| | - J Bono
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Bottalico
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - T Bowcock
- University of Liverpool, Liverpool, United Kingdom
| | - D Boyden
- Northern Illinois University, DeKalb, Illinois, USA
| | - G Cantatore
- INFN, Sezione di Trieste, Trieste, Italy
- Università di Trieste, Trieste, Italy
| | - R M Carey
- Boston University, Boston, Massachusetts, USA
| | - J Carroll
- University of Liverpool, Liverpool, United Kingdom
| | - B C K Casey
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Cauz
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - S Ceravolo
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | | | - S P Chang
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | | | - S Chappa
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Charity
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - R Chislett
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - J Choi
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Z Chu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - T E Chupp
- University of Michigan, Ann Arbor, Michigan, USA
| | - M E Convery
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Conway
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - G Corradi
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - S Corrodi
- Argonne National Laboratory, Lemont, Illinois, USA
| | - L Cotrozzi
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - J D Crnkovic
- Brookhaven National Laboratory, Upton, New York, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- University of Mississippi, University, Mississippi, USA
| | - S Dabagov
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | | | - P T Debevec
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - P Di Meo
- INFN, Sezione di Napoli, Napoli, Italy
| | | | - R Di Stefano
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Cassino e del Lazio Meridionale, Cassino, Italy
| | - B Drendel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - A Driutti
- INFN, Sezione di Trieste, Trieste, Italy
- Università di Udine, Udine, Italy
- University of Kentucky, Lexington, Kentucky, USA
| | - V N Duginov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Eads
- Northern Illinois University, DeKalb, Illinois, USA
| | - N Eggert
- Cornell University, Ithaca, New York, USA
| | - A Epps
- Northern Illinois University, DeKalb, Illinois, USA
| | - J Esquivel
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Farooq
- University of Michigan, Ann Arbor, Michigan, USA
| | - R Fatemi
- University of Kentucky, Lexington, Kentucky, USA
| | - C Ferrari
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - M Fertl
- Institute of Physics and Cluster of Excellence PRISMA+, Johannes Gutenberg University Mainz, Mainz, Germany
- University of Washington, Seattle, Washington, USA
| | - A Fiedler
- Northern Illinois University, DeKalb, Illinois, USA
| | - A T Fienberg
- University of Washington, Seattle, Washington, USA
| | - A Fioretti
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - D Flay
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - S B Foster
- Boston University, Boston, Massachusetts, USA
| | - H Friedsam
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Frlež
- University of Virginia, Charlottesville, Virginia, USA
| | - N S Froemming
- Northern Illinois University, DeKalb, Illinois, USA
- University of Washington, Seattle, Washington, USA
| | - J Fry
- University of Virginia, Charlottesville, Virginia, USA
| | - C Fu
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - C Gabbanini
- INFN, Sezione di Pisa, Pisa, Italy
- Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - M D Galati
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - S Ganguly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - A Garcia
- University of Washington, Seattle, Washington, USA
| | - D E Gastler
- Boston University, Boston, Massachusetts, USA
| | - J George
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | | | - A Gioiosa
- INFN, Sezione di Pisa, Pisa, Italy
- Università del Molise, Campobasso, Italy
| | - K L Giovanetti
- Department of Physics and Astronomy, James Madison University, Harrisonburg, Virginia, USA
| | - P Girotti
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - W Gohn
- University of Kentucky, Lexington, Kentucky, USA
| | - T Gorringe
- University of Kentucky, Lexington, Kentucky, USA
| | - J Grange
- Argonne National Laboratory, Lemont, Illinois, USA
- University of Michigan, Ann Arbor, Michigan, USA
| | - S Grant
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - F Gray
- Regis University, Denver, Colorado, USA
| | - S Haciomeroglu
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - D Hahn
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - D Hampai
- INFN, Laboratori Nazionali di Frascati, Frascati, Italy
| | - F Han
- University of Kentucky, Lexington, Kentucky, USA
| | - E Hazen
- Boston University, Boston, Massachusetts, USA
| | - J Hempstead
- University of Washington, Seattle, Washington, USA
| | - S Henry
- University of Oxford, Oxford, United Kingdom
| | - A T Herrod
- University of Liverpool, Liverpool, United Kingdom
| | - D W Hertzog
- University of Washington, Seattle, Washington, USA
| | - G Hesketh
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Hibbert
- University of Liverpool, Liverpool, United Kingdom
| | - Z Hodge
- University of Washington, Seattle, Washington, USA
| | - J L Holzbauer
- University of Mississippi, University, Mississippi, USA
| | - K W Hong
- University of Virginia, Charlottesville, Virginia, USA
| | - R Hong
- Argonne National Laboratory, Lemont, Illinois, USA
- University of Kentucky, Lexington, Kentucky, USA
| | - M Iacovacci
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli, Napoli, Italy
| | | | - C Johnstone
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - J A Johnstone
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - P Kammel
- University of Washington, Seattle, Washington, USA
| | | | - M Karuza
- INFN, Sezione di Trieste, Trieste, Italy
- University of Rijeka, Rijeka, Croatia
| | - J Kaspar
- University of Washington, Seattle, Washington, USA
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - L Kelton
- University of Kentucky, Lexington, Kentucky, USA
| | - A Keshavarzi
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - D Kessler
- Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA
| | - K S Khaw
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
- University of Washington, Seattle, Washington, USA
| | | | - N V Khomutov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - B Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Kiburg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- North Central College, Naperville, Illinois, USA
| | - O Kim
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - S C Kim
- Cornell University, Ithaca, New York, USA
| | - Y I Kim
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - B King
- University of Liverpool, Liverpool, United Kingdom
| | - N Kinnaird
- Boston University, Boston, Massachusetts, USA
| | | | - I Kourbanis
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Kraegeloh
- University of Michigan, Ann Arbor, Michigan, USA
| | - V A Krylov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A Kuchibhotla
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | | | - K R Labe
- Cornell University, Ithaca, New York, USA
| | - J LaBounty
- University of Washington, Seattle, Washington, USA
| | - M Lancaster
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | - M J Lee
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - S Lee
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - S Leo
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - B Li
- Argonne National Laboratory, Lemont, Illinois, USA
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - D Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - L Li
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - I Logashenko
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | | | - A Lucà
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - G Lukicov
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - G Luo
- Northern Illinois University, DeKalb, Illinois, USA
| | - A Lusiani
- INFN, Sezione di Pisa, Pisa, Italy
- Scuola Normale Superiore, Pisa, Italy
| | - A L Lyon
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - B MacCoy
- University of Washington, Seattle, Washington, USA
| | - R Madrak
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - K Makino
- Michigan State University, East Lansing, Michigan, USA
| | - F Marignetti
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Cassino e del Lazio Meridionale, Cassino, Italy
| | | | - S Maxfield
- University of Liverpool, Liverpool, United Kingdom
| | - M McEvoy
- Northern Illinois University, DeKalb, Illinois, USA
| | - W Merritt
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | | | - J P Miller
- Boston University, Boston, Massachusetts, USA
| | - S Miozzi
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
| | - J P Morgan
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - W M Morse
- Brookhaven National Laboratory, Upton, New York, USA
| | - J Mott
- Boston University, Boston, Massachusetts, USA
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - E Motuk
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Nath
- INFN, Sezione di Napoli, Napoli, Italy
- Università di Napoli, Napoli, Italy
| | - D Newton
- University of Liverpool, Liverpool, United Kingdom
| | - H Nguyen
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Oberling
- Argonne National Laboratory, Lemont, Illinois, USA
| | - R Osofsky
- University of Washington, Seattle, Washington, USA
| | - J-F Ostiguy
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - S Park
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - G Pauletta
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - G M Piacentino
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
- Università del Molise, Campobasso, Italy
| | - R N Pilato
- INFN, Sezione di Pisa, Pisa, Italy
- Università di Pisa, Pisa, Italy
| | - K T Pitts
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - B Plaster
- University of Kentucky, Lexington, Kentucky, USA
| | - D Počanić
- University of Virginia, Charlottesville, Virginia, USA
| | - N Pohlman
- Northern Illinois University, DeKalb, Illinois, USA
| | - C C Polly
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Popovic
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - J Price
- University of Liverpool, Liverpool, United Kingdom
| | - B Quinn
- University of Mississippi, University, Mississippi, USA
| | - N Raha
- INFN, Sezione di Pisa, Pisa, Italy
| | | | - E Ramberg
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - N T Rider
- Cornell University, Ithaca, New York, USA
| | - J L Ritchie
- Department of Physics, University of Texas at Austin, Austin, Texas, USA
| | - B L Roberts
- Boston University, Boston, Massachusetts, USA
| | - D L Rubin
- Cornell University, Ithaca, New York, USA
| | - L Santi
- INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy
- Università di Udine, Udine, Italy
| | - D Sathyan
- Boston University, Boston, Massachusetts, USA
| | - H Schellman
- Northwestern University, Evanston, Illinois, USA
| | - C Schlesier
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - A Schreckenberger
- Boston University, Boston, Massachusetts, USA
- University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Physics, University of Texas at Austin, Austin, Texas, USA
| | - Y K Semertzidis
- Center for Axion and Precision Physics (CAPP)/Institute for Basic Science (IBS), Daejeon, Republic of Korea
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Y M Shatunov
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - D Shemyakin
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
| | - M Shenk
- Northern Illinois University, DeKalb, Illinois, USA
| | - D Sim
- University of Liverpool, Liverpool, United Kingdom
| | - M W Smith
- INFN, Sezione di Pisa, Pisa, Italy
- University of Washington, Seattle, Washington, USA
| | - A Smith
- University of Liverpool, Liverpool, United Kingdom
| | - A K Soha
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Sorbara
- INFN, Sezione di Roma Tor Vergata, Roma, Italy
- Università di Roma Tor Vergata, Rome, Italy
| | - D Stöckinger
- Institut für Kern-und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - J Stapleton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Still
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - C Stoughton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - D Stratakis
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - C Strohman
- Cornell University, Ithaca, New York, USA
| | - T Stuttard
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - H E Swanson
- University of Washington, Seattle, Washington, USA
| | - G Sweetmore
- Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
| | | | - M J Syphers
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
- Northern Illinois University, DeKalb, Illinois, USA
| | - D A Tarazona
- Michigan State University, East Lansing, Michigan, USA
| | - T Teubner
- University of Liverpool, Liverpool, United Kingdom
| | | | - K Thomson
- University of Liverpool, Liverpool, United Kingdom
| | - V Tishchenko
- Brookhaven National Laboratory, Upton, New York, USA
| | - N H Tran
- Boston University, Boston, Massachusetts, USA
| | - W Turner
- University of Liverpool, Liverpool, United Kingdom
| | - E Valetov
- Lancaster University, Lancaster, United Kingdom
- Michigan State University, East Lansing, Michigan, USA
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
| | - D Vasilkova
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | | | - V P Volnykh
- Joint Institute for Nuclear Research, Dubna, Russia
| | - T Walton
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Warren
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Weisskopf
- Michigan State University, East Lansing, Michigan, USA
| | - L Welty-Rieger
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
| | - M Whitley
- University of Liverpool, Liverpool, United Kingdom
| | - P Winter
- Argonne National Laboratory, Lemont, Illinois, USA
| | - A Wolski
- University of Liverpool, Liverpool, United Kingdom
| | - M Wormald
- University of Liverpool, Liverpool, United Kingdom
| | - W Wu
- University of Mississippi, University, Mississippi, USA
| | - C Yoshikawa
- Fermi National Accelerator Laboratory, Batavia, Illinois, USA
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Agrawal S, Ransom RF, Saraswathi S, Garcia-Gonzalo E, Webb A, Fernandez-Martinez JL, Popovic M, Guess AJ, Kloczkowski A, Benndorf R, Sadee W, Smoyer WE. Sulfatase 2 Is Associated with Steroid Resistance in Childhood Nephrotic Syndrome. J Clin Med 2021; 10:523. [PMID: 33540508 PMCID: PMC7867139 DOI: 10.3390/jcm10030523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/20/2021] [Accepted: 01/23/2021] [Indexed: 01/17/2023] Open
Abstract
Glucocorticoid (GC) resistance complicates the treatment of ~10-20% of children with nephrotic syndrome (NS), yet the molecular basis for resistance remains unclear. We used RNAseq analysis and in silico algorithm-based approaches on peripheral blood leukocytes from 12 children both at initial NS presentation and after ~7 weeks of GC therapy to identify a 12-gene panel able to differentiate steroid resistant NS (SRNS) from steroid-sensitive NS (SSNS). Among this panel, subsequent validation and analyses of one biologically relevant candidate, sulfatase 2 (SULF2), in up to a total of 66 children, revealed that both SULF2 leukocyte expression and plasma arylsulfatase activity Post/Pre therapy ratios were greater in SSNS vs. SRNS. However, neither plasma SULF2 endosulfatase activity (measured by VEGF binding activity) nor plasma VEGF levels, distinguished SSNS from SRNS, despite VEGF's reported role as a downstream mediator of SULF2's effects in glomeruli. Experimental studies of NS-related injury in both rat glomeruli and cultured podocytes also revealed decreased SULF2 expression, which were partially reversible by GC treatment of podocytes. These findings together suggest that SULF2 levels and activity are associated with GC resistance in NS, and that SULF2 may play a protective role in NS via the modulation of downstream mediators distinct from VEGF.
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Affiliation(s)
- Shipra Agrawal
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | - Richard F. Ransom
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | - Saras Saraswathi
- Battelle Center for Mathematical Medicine at Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA;
| | | | - Amy Webb
- Department of Biomedical Informatics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | | | - Milan Popovic
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
| | - Adam J. Guess
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
| | - Andrzej Kloczkowski
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
- Battelle Center for Mathematical Medicine at Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA;
| | - Rainer Benndorf
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | - Wolfgang Sadee
- Department of Cancer Biology and Genetics, Center for Pharmacogenomics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
| | - William E. Smoyer
- Center for Clinical and Translational Research, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA; (R.F.R.); (M.P.); (A.J.G.); (R.B.)
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH 43210, USA;
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18
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Petrovic B, Pantelinac J, Capo I, Miljkovic D, Popovic M, Penezic K, Stefanovic S. Using Histological Staining Techniques to Improve Visualization and Interpretability of Tooth Cementum Annulation Analysis. INT J MORPHOL 2021. [DOI: 10.4067/s0717-95022021000100216] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Yaparla A, Koubourli DV, Popovic M, Grayfer L. Exploring the relationships between amphibian (Xenopus laevis) myeloid cell subsets. Dev Comp Immunol 2020; 113:103798. [PMID: 32745480 DOI: 10.1016/j.dci.2020.103798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/09/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
The differentiation of distinct leukocyte subsets is governed by lineage-specific growth factors that elicit disparate expression of transcription factors and markers by the developing cell populations. For example, macrophages (Mφs) and granulocytes (Grns) arise from common granulocyte-macrophage progenitors in response to distinct myeloid growth factors. In turn, myelopoiesis of the Xenopus laevis anuran amphibian appears to be unique to other studied vertebrates in several respects while the functional differentiation of amphibian Mφs and Grns from their progenitor cells remains poorly understood. Notably, the expression of colony stimulating factor-1 receptor (CSF-1R) or CSF-3R on granulocyte-macrophage progenitors marks their commitment to Mφ- or Grn-lineages, respectively. CSF-1R is activated by the colony stimulating factor-1 (CSF-1) and interleukin (IL-34) cytokines, resulting in morphologically and functionally distinct Mφ cell types. Conversely, CSF-3R is ligated by CSF-3 in a process indispensable for granulopoiesis. Presently, we explore the relationships between X. laevis CSF-1-Mφs, IL-34-Mφs and CSF-3-Grns by examining their expression of key lineage-specific transcription factor and myeloid marker genes as well as their enzymology. Our findings suggest that while the CSF-1- and IL-34-Mφs share some commonalities, the IL-34-Mφs possess transcriptional patterns more akin to the CSF-3-Grns. IL-34-Mφs also possess robust expression of dendritic cell-associated transcription factors and surface marker genes, further underlining the difference between this cell type and the CSF-1-derived frog Mφ subset. Moreover, the three myeloid populations differ in their respective tartrate-resistant acid phosphatase, specific- and non-specific esterase activity. Together, this work grants new insights into the developmental relatedness of these three frog myeloid subsets.
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Affiliation(s)
- Amulya Yaparla
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA
| | - Daphne V Koubourli
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA.
| | - Milan Popovic
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA.
| | - Leon Grayfer
- Department of Biological Sciences, George Washington University, Washington, DC, 20052, USA.
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Popovic M, Talarico O, van den Hoff J, Kunin H, Zhang Z, Lafontaine D, Dogan S, Leung J, Kaye E, Czmielewski C, Mayerhoefer ME, Zanzonico P, Yaeger R, Schöder H, Humm JL, Solomon SB, Sofocleous CT, Kirov AS. KRAS mutation effects on the 2-[18F]FDG PET uptake of colorectal adenocarcinoma metastases in the liver. EJNMMI Res 2020; 10:142. [PMID: 33226505 PMCID: PMC7683631 DOI: 10.1186/s13550-020-00707-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/21/2020] [Indexed: 12/14/2022] Open
Abstract
Background Deriving individual tumor genomic characteristics from patient imaging analysis is desirable. We explore the predictive value of 2-[18F]FDG uptake with regard to the KRAS mutational status of colorectal adenocarcinoma liver metastases (CLM). Methods 2-[18F]FDG PET/CT images, surgical pathology and molecular diagnostic reports of 37 patients who underwent PET/CT-guided biopsy of CLM were reviewed under an IRB-approved retrospective research protocol. Sixty CLM in 39 interventional PET scans of the 37 patients were segmented using two different auto-segmentation tools implemented in different commercially available software packages. PET standard uptake values (SUV) were corrected for: (1) partial volume effect (PVE) using cold wall-corrected contrast recovery coefficients derived from phantom spheres with variable diameter and (2) variability of arterial tracer supply and variability of uptake time after injection until start of PET scan derived from the tumor-to-blood standard uptake ratio (SUR) approach. The correlations between the KRAS mutational status and the mean, peak and maximum SUV were investigated using Student’s t test, Wilcoxon rank sum test with continuity correction, logistic regression and receiver operation characteristic (ROC) analysis.
These correlation analyses were also performed for the ratios of the mean, peak and maximum tumor uptake to the mean blood activity concentration at the time of scan: SURMEAN, SURPEAK and SURMAX, respectively. Results Fifteen patients harbored KRAS missense mutations (KRAS+), while another 3 harbored KRAS gene amplification. For 31 lesions, the mutational status was derived from the PET/CT-guided biopsy. The Student’s t test p values for separating KRAS mutant cases decreased after applying PVE correction to all uptake metrics of each lesion and when applying correction for uptake time variability to the SUR metrics. The observed correlations were strongest when both corrections were applied to SURMAX and when the patients harboring gene amplification were grouped with the wild type: p ≤ 0.001; ROC area under the curve = 0.77 and 0.75 for the two different segmentations, respectively, with a mean specificity of 0.69 and sensitivity of 0.85. Conclusion The correlations observed after applying the described corrections show potential for assigning probabilities for the KRAS missense mutation status in CLM using 2-[18F]FDG PET images.
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Affiliation(s)
- M Popovic
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Cornell University, Ithaca, NY, 14850, USA
| | - O Talarico
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Vassar Brothers Medical Center, Poughkeepsie, NY, 12601, USA.,Lebedev Physical Institute RAS, Moscow, Russia, 119991
| | - J van den Hoff
- Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany
| | - H Kunin
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Z Zhang
- Department of Epidemiology & Biostatistics, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - D Lafontaine
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - S Dogan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - J Leung
- Technology Division, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - E Kaye
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - C Czmielewski
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - M E Mayerhoefer
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - P Zanzonico
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - R Yaeger
- Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - H Schöder
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - J L Humm
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - S B Solomon
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - C T Sofocleous
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - A S Kirov
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
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21
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Popovic M, Dhaenens L, Taelman J, Dheedene A, Bialecka M, De Sutter P, Chuva de Sousa Lopes SM, Menten B, Heindryckx B. Extended in vitro culture of human embryos demonstrates the complex nature of diagnosing chromosomal mosaicism from a single trophectoderm biopsy. Hum Reprod 2020; 34:758-769. [PMID: 30838420 DOI: 10.1093/humrep/dez012] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 01/09/2019] [Accepted: 01/31/2019] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION What is the accuracy of preimplantation genetic testing for aneuploidies (PGT-A) when considering human peri-implantation outcomes in vitro? STUDY ANSWER The probability of accurately diagnosing an embryo as abnormal was 100%, while the proportion of euploid embryos classified as clinically suitable was 61.9%, yet if structural and mosaic abnormalities were not considered accuracy increased to 100%, with a 0% false positive and false negative rate. WHAT IS ALREADY KNOWN Embryo aneuploidy is associated with implantation failure and early pregnancy loss. However, a proportion of blastocysts are mosaic, containing chromosomally distinct cell populations. Diagnosing chromosomal mosaicism remains a significant challenge for PGT-A. Although mosaic embryos may lead to healthy live births, they are also associated with poorer clinical outcomes. Moreover, the direct effects of mosaicism on early pregnancy remain unknown. Recently, developed in vitro systems allow extended embryo culture for up to 14 days providing a unique opportunity for modelling chromosomal instability during human peri-implantation development. STUDY DESIGN, SIZE, DURATION A total of 80 embryos were cultured to either 8 (n = 7) or 12 days post-fertilisation (dpf; n = 73). Of these, 54 were PGT-A blastocysts, donated to research following an abnormal (n = 37) or mosaic (n = 17) diagnosis. The remaining 26 were supernumerary blastocysts, obtained from standard assisted reproductive technology (ART) cycles. These embryos underwent trophectoderm (TE) biopsy prior to extended culture. PARTICIPANTS/MATERIALS, SETTING, METHODS We applied established culture protocols to generate embryo outgrowths. Outgrowth viability was assessed based on careful morphological evaluation. Nine outgrowths were further separated into two or more portions corresponding to inner cell mass (ICM) and TE-derived lineages. A total of 45 embryos were selected for next generation sequencing (NGS) at 8 or 12 dpf. We correlated TE biopsy profiles to both culture outcomes and the chromosomal status of the embryos during later development. MAIN RESULTS AND THE ROLE OF CHANCE Of the 73 embryos cultured to 12 dpf, 51% remained viable, while 49% detached between 8 and 12 dpf. Viable, Day 12 outgrowths were predominately generated from euploid blastocysts and those diagnosed with trisomies, duplications or mosaic aberrations. Conversely, monosomies, deletions and more complex chromosomal constitutions significantly impaired in vitro development to 12 dpf (10% vs. 77%, P < 0.0001). When compared to the original biopsy, we determined 100% concordance for uniform numerical aneuploidies, both in whole outgrowths and in the ICM and TE-derived outgrowth portions. However, uniform structural variants were not always confirmed later in development. Moreover, a high proportion of embryos originally diagnosed as mosaic remained viable at 12 dpf (58%). Of these, 71% were euploid, with normal profiles observed in both ICM and TE-derived lineages. Based on our validation data, we determine a 0% false negative and 18.5% false positive error rate when diagnosing mosaicism. Overall, our findings demonstrate a diagnostic accuracy of 80% in the context of PGT-A. Nevertheless, if structural and mosaic abnormalities are not considered, accuracy increases to 100%, with a 0% false positive and false negative rate. LIMITATIONS REASONS FOR CAUTION The inherent limitations of extended in vitro culture, particularly when modelling critical developmental milestones, warrant careful interpretation. WIDER IMPLICATIONS OF THE FINDINGS Our findings echo current prenatal testing data and support the high clinical predictive value of PGT-A for diagnosing uniform numerical aneuploidies, as well as euploid chromosomal constitutions. However, distinguishing technical bias from biological variability will remain a challenge, inherently limiting the accuracy of a single TE biopsy for diagnosing mosaicism. STUDY FUNDING, COMPETING INTEREST(S) This research is funded by the Ghent University Special Research Fund (BOF01D08114) awarded to M.P., the Research Foundation-Flanders (FWO.KAN.0005.01) research grant awarded to B.H. and De Snoo-van't Hoogerhuijs Stichting awarded to S.M.C.d.S.L. We thank Ferring Pharmaceuticals (Aalst, Belgium) for their unrestricted educational grant. The authors declare no competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- M Popovic
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - L Dhaenens
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - J Taelman
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - A Dheedene
- Center for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - M Bialecka
- Department of Anatomy and Embryology, Leiden University Medical Centre, Albinusdreef 2, ZA Leiden, Netherlands
| | - P De Sutter
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - S M Chuva de Sousa Lopes
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium.,Department of Anatomy and Embryology, Leiden University Medical Centre, Albinusdreef 2, ZA Leiden, Netherlands
| | - B Menten
- Center for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - B Heindryckx
- Ghent-Fertility And Stem cell Team (G-FAST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
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22
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Tang M, Guggilla RR, Gansemans Y, Van der Jeught M, Boel A, Popovic M, Stamatiadis P, Ferrer-Buitrago M, Thys V, Van Coster R, Deforce D, De Sutter P, Van Nieuwerburgh F, Heindryckx B. Comparative analysis of different nuclear transfer techniques to prevent the transmission of mitochondrial DNA variants. Mol Hum Reprod 2020; 25:797-810. [PMID: 31651030 DOI: 10.1093/molehr/gaz062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 10/07/2019] [Indexed: 11/13/2022] Open
Abstract
Prevention of mitochondrial DNA (mtDNA) diseases may currently be possible using germline nuclear transfer (NT). However, scientific evidence to compare efficiency of different NT techniques to overcome mtDNA diseases is lacking. Here, we performed four types of NT, including first or second polar body transfer (PB1/2T), maternal spindle transfer (ST) and pronuclear transfer (PNT), using NZB/OlaHsd and B6D2F1 mouse models. Embryo development was assessed following NT, and mtDNA carry-over levels were measured by next generation sequencing (NGS). Moreover, we explored two novel protocols (PB2T-a and PB2T-b) to optimize PB2T using mouse and human oocytes. Chromosomal profiles of NT-generated blastocysts were evaluated using NGS. In mouse, our findings reveal that only PB2T-b successfully leads to blastocysts. There were comparable blastocyst rates among PB1T, PB2T-b, ST and PNT embryos. Furthermore, PB1T and PB2T-b had lower mtDNA carry-over levels than ST and PNT. After extrapolation of novel PB2T-b to human in vitro matured (IVM) oocytes and in vivo matured oocytes with smooth endoplasmic reticulum aggregate (SERa) oocytes, the reconstituted embryos successfully developed to blastocysts at a comparable rate to ICSI controls. PB2T-b embryos generated from IVM oocytes showed a similar euploidy rate to ICSI controls. Nevertheless, our mouse model with non-mutated mtDNAs is different from a mixture of pathogenic and non-pathogenic mtDNAs in a human scenario. Novel PB2T-b requires further optimization to improve blastocyst rates in human. Although more work is required to elucidate efficiency and safety of NT, our study suggests that PBT may have the potential to prevent mtDNA disease transmission.
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Affiliation(s)
- M Tang
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - R R Guggilla
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - Y Gansemans
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Ottergemsesteenweg 460, Ghent 9000, Belgium
| | - M Van der Jeught
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - A Boel
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - P Stamatiadis
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - M Ferrer-Buitrago
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - V Thys
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - R Van Coster
- Department of Pediatric Neurology and Metabolism, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Ottergemsesteenweg 460, Ghent 9000, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
| | - F Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Ottergemsesteenweg 460, Ghent 9000, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent 9000, Belgium
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23
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Milic B, Ilic T, Popovic M, Erdeljan B, Jankovic T. AB0654 IMPACT OF GENDER ON PATIENT PROFILE AND TREATMENT RESPONSE IN ANKYLOSING SPONDYLITIS PATIENTS TREATED WITH TNF-α INHIBITORS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Ankylosing spondylitis (AS) was historically seen as a predominantly male disease and although recent data showed a more homogenous sex prevalence there is still a long delay and more often a misdiagnosis in women. Also, studies showed that there might be gender-attributable differences regarding clinical characteristics, radiographic damage and response to treatment.Objectives:The aim of this study was to assess gender differences in AS patients regarding the clinical presentation, disease activity, functional status and response to tumor necrosis factor-alpha inhibitor (TNF-α inhibitor) therapy.Methods:This retrospective analysis included 59 AS patients treated with first TNF-α inhibitor for at least 12 weeks. TNF-α inhibitor therapy introduction and response was determined according to ASAS-EULAR management recommendations for AS. Clinical and demographic parameters were compared between the female and male patients.Results:Twenty-four patients (40,68%) were females and 35(59,32%) were males. Women were older than male at moment of study (p=0,049), at the time of diagnosis (p=0,05) and when starting biologic therapy (p=0,009). Moreover, they had a longer diagnosis delay (p=0,017) compared to men. Prevalence of HLA-B27 status and the rate of peripheral arthritis, dactylitis, enthesitis, uveitis or inflammatory bowel disease (IBD) were not different between two groups. Disease activity and functional status were also similar in both groups. Males had a significantly longer drug survival time for first biologic (p=0,031). One female patient (4.2%) and 4 male patients (11,4%) showed primary or secondary inefficacy to TNF-α inhibitor (p=0,61). All 5 non-responders switched to second TNF-α inhibitor and showed a good clinical response. The comparison of the demographic features, clinical characteristics, disease activity, functional status and response to TNF-α inhibitor therapy according to the gender are presented in Table 1.Conclusion:In our cohort, the presence of the female gender was related to longer diagnosis delay compared to males. Non-response rate for the first TNF-α inhibitor was similar between groups, but men had longer drug survival time for the first biologic.References:[1]Rusman T, van Vollenhoven RF, van der Horst-Bruinsma IE. Gender differences in axial spondyloarthritis: women are not so lucky. Curr. Rheumatol. Rep. 20(6), 35 (2018).[2]Van der Heijde D, Ramiro S, Landewe R, et al. (2017): 2016 update of the ASAS-EULAR management recommendations for axial spondyloarthritis. Ann Rheum Dis.76:978–91.Table 1.Comparison of the baseline demographic, clinical characteristics and treatment response between female and male patients treated with TNF-α inhibitorfemale (n=24)male (n=35)P ValueAge (years), mean±SD49,08±12,9442,56±11,960,049Age at onset (years), mean±SD31,6±9,527,7±9,180,117Age at diagnosis (years), mean±SD39,02±11,2233,06±11,360,05Diagnosis delay (years), mean±SD7,39±3,455,36±2,860,017Age at TNF-α inhibitor initiation (years), mean±SD46,4±12,2538,08±11,140,009HLA-B27 positivity n (%)17 (70,8%)32 (91,4%)0,086Family history n (%)10 (41,7%)15 (42,9%)1Peripheral arthritis n (%)16 (66,7%)17 (48,6%)0,26Enthesitis n (%)3 (12,5%)6 (17,1%)0,9Dactylitis n (%)0 (0%)3 (8,6%)0,385Uveitis n (%)8 (33,3%)9 (25,7%)0,732Inflamatory bowel disease n (%)3 (12,5%)5 (14,3%)1BASDAI score at TNF-α inhibitor initiation, mean±SD6,33±1,696,11±1,770,637BASFI score at TNF-α inhibitor initiation, mean±SD5,68±1,396,09±1,390,272ASDAS-CRP score at TNF-α inhibitor initiation, mean±SD3,87±0,933,78±1,020,743Duration of first TNF-α inhibitor use (months), mean±SD35,33±26,6651,54±28,250,031Non-responders to first TNF-α inhibitor n (%)1 (4,2%)4 (11,4%)0,611Disclosure of Interests:None declared
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24
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Djokovic A, Stojanovich L, Stanisavljevic N, Popovic M, Zdravkovic M. Double trouble: myocardial infarction with non-obstructive coronary arteries as a presentation of Hughes syndrome in monozygotic twins. Lupus 2020; 29:505-508. [PMID: 32041501 DOI: 10.1177/0961203320906267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Myocardial infarction with non-obstructive coronary arteries (MINOCA) is a recently described, clinically significant entity, with prevalence rates ranging from 1% to 14% and a mean of 6% of all patients with myocardial infarction. Antiphospholipid syndrome (APS; Hughes syndrome) is characterized by the presence of antiphospholipid antibodies associated with thrombosis (arterial and/or venous) and/or pregnancy morbidity and could be the cause of MINOCA. Data on genetic predisposition to APS are scarce. The present study describes a unique case of monozygotic twin brothers who, at a young age, developed the same clinical presentation of APS. The diagnosis of APS was later confirmed, along with a diagnosis of systemic lupus erythematosus in one brother.
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Affiliation(s)
- A Djokovic
- Department of Cardiology, Division of Interventional Cardiology, University Hospital Medical Centre Bezanijska kosa, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - L Stojanovich
- Department of Rheumatology, University Hospital Medical Center Bezanijska kosa, Belgrade, Serbia
| | - N Stanisavljevic
- Department of Haematology, University Hospital Medical Center Bezanijska kosa, Belgrade, Serbia
| | - M Popovic
- Department of Radiology, CMR Lab, University Hospital Medical Center Bezanijska kosa, Belgrade, Serbia
| | - M Zdravkovic
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Department of Cardiology, CMR Lab, University Hospital Medical Center Bezanijska kosa, Belgrade, Serbia
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25
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Hauser K, Popovic M, Yaparla A, Koubourli DV, Reeves P, Batheja A, Webb R, Forzán MJ, Grayfer L. Discovery of granulocyte-lineage cells in the skin of the amphibianXenopus laevis. Facets (Ott) 2020. [DOI: 10.1139/facets-2020-0010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The ranavirus Frog Virus 3 (FV3) and the chytrid fungus Batrachochytrium dendrobatidis ( Bd) are significant contributors to the global amphibian declines and both pathogens target the amphibian skin. We previously showed that tadpoles and adults of the anuran amphibian Xenopus laevis express notable levels of granulocyte chemokine genes ( cxcl8a and cxcl8b) within their skin and likely possess skin-resident granulocytes. Presently, we show that tadpole and adult X. laevis indeed possess granulocyte-lineage cells within their epidermises that are distinct from their skin mast cells, which are found predominantly in lower dermal layers. These esterase-positive cells responded to (r)CXCL8a and rCXCL8b in a concentration- and CXCR1/CXCR2-dependent manner, possessed polymorphonuclear granulocyte morphology, granulocyte marker surface staining, and exhibited distinct immune gene expression from conventional granulocytes. Our past work indicates that CXCL8b recruits immunosuppressive granulocytes, and here we demonstrated that enriching esterase-positive skin granulocytes with rCXCL8b (but not rCXCL8a) may increase tadpole susceptibility to FV3 and adult frog susceptibility to Bd. Furthermore, pharmacological depletion of skin-resident granulocytes increased tadpole susceptibility to FV3. This manuscript provides new insights into the composition and roles of immune cells within the amphibian skin, which is a critical barrier against pathogenic contributors to the amphibian declines.
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Affiliation(s)
- Kelsey Hauser
- Department of Biological Sciences, George Washington University, Washington, DC 20052, USA
| | - Milan Popovic
- Department of Biological Sciences, George Washington University, Washington, DC 20052, USA
| | - Amulya Yaparla
- Department of Biological Sciences, George Washington University, Washington, DC 20052, USA
| | - Daphne V. Koubourli
- Department of Biological Sciences, George Washington University, Washington, DC 20052, USA
| | | | | | - Rose Webb
- Pathology Core Laboratory, George Washington University, Washington, DC 20037, USA
| | - María J. Forzán
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine, Long Island University, Brookville, NY 11548, USA
| | - Leon Grayfer
- Department of Biological Sciences, George Washington University, Washington, DC 20052, USA
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26
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Cuesta-Seijo JA, De Porcellinis AJ, Valente AH, Striebeck A, Voss C, Marri L, Hansson A, Jansson AM, Dinesen MH, Fangel JU, Harholt J, Popovic M, Thieme M, Hochmuth A, Zeeman SC, Mikkelsen TN, J�rgensen RB, Roitsch TG, M�ller BL, Braumann I. Amylopectin Chain Length Dynamics and Activity Signatures of Key Carbon Metabolic Enzymes Highlight Early Maturation as Culprit for Yield Reduction of Barley Endosperm Starch after Heat Stress. Plant Cell Physiol 2019; 60:2692-2706. [PMID: 31397873 PMCID: PMC6896705 DOI: 10.1093/pcp/pcz155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/30/2019] [Indexed: 05/30/2023]
Abstract
Abiotic environmental stresses have a negative impact on the yield and quality of crops. Understanding these stresses is an essential enabler for mitigating breeding strategies and it becomes more important as the frequency of extreme weather conditions increases due to climate change. This study analyses the response of barley (Hordeum vulgare L.) to a heat wave during grain filling in three distinct stages: the heat wave itself, the return to a normal temperature regime, and the process of maturation and desiccation. The properties and structure of the starch produced were followed throughout the maturational stages. Furthermore, the key enzymes involved in the carbohydrate supply to the grain were monitored. We observed differences in starch structure with well-separated effects because of heat stress and during senescence. Heat stress produced marked effects on sucrolytic enzymes in source and sink tissues. Early cessation of plant development as an indirect consequence of the heat wave was identified as the major contributor to final yield loss from the stress, highlighting the importance for functional stay-green traits for the development of heat-resistant cereals.
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Affiliation(s)
| | | | | | - Alexander Striebeck
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Cynthia Voss
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Lucia Marri
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Andreas Hansson
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Anita M Jansson
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | | | - Jonatan Ulrik Fangel
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Jesper Harholt
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
| | - Milan Popovic
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Centre, University of Copenhagen, Hojbakkegard Alle, 2630 Taastrup, Denmark
| | - Mercedes Thieme
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Anton Hochmuth
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Samuel C Zeeman
- Institute of Molecular Plant Biology, ETH Zurich, Zurich 8092, Switzerland
| | - Teis N�rgaard Mikkelsen
- Atmospheric Environment, DTU Environmental engineering, Technical University of Denmark, Building 115, 2800 Kgs, Lyngby, Denmark
| | - Rikke Bagger J�rgensen
- Atmospheric Environment, DTU Environmental engineering, Technical University of Denmark, Building 115, 2800 Kgs, Lyngby, Denmark
| | - Thomas Georg Roitsch
- Department of Plant and Environmental Sciences, Copenhagen Plant Science Centre, University of Copenhagen, Hojbakkegard Alle, 2630 Taastrup, Denmark
| | - Birger Lindberg M�ller
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, 1871 Frederiksberg, Denmark
| | - Ilka Braumann
- Carlsberg Research Laboratory, J.C, Jacobsens Gade 4, 1799 Copenhagen V, Denmark
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Scholl S, Latouche A, De Koning L, Popovic M, de la Rochefordière A, Berns E, Gestraud P, Girard E, Lecerf C, von der Leyen H, Roman Roman S, Rouzier R, Kamal M, Consortium R. Impact of β-catenin phosphorylation patterns on tumour control/progression in a prospective cervical cancer study (RAIDs). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz413.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Popovic M, Yaparla A, Paquin‐Proulx D, Koubourli DV, Webb R, Firmani M, Grayfer L. Colony‐stimulating factor‐1‐ and interleukin‐34‐derived macrophages differ in their susceptibility to
Mycobacterium marinum. J Leukoc Biol 2019; 106:1257-1269. [DOI: 10.1002/jlb.1a0919-147r] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/02/2019] [Accepted: 09/06/2019] [Indexed: 12/22/2022] Open
Affiliation(s)
- Milan Popovic
- Department of Biological Sciences George Washington University Washington DC 20052 USA
| | - Amulya Yaparla
- Department of Biological Sciences George Washington University Washington DC 20052 USA
| | - Dominic Paquin‐Proulx
- Department of Microbiology Immunology and Tropical Medicine George Washington University Washington DC 20037 USA
| | - Daphne V. Koubourli
- Department of Biological Sciences George Washington University Washington DC 20052 USA
| | - Rose Webb
- Pathology Core Laboratory George Washington University Washington DC 20037 USA
| | - Marcia Firmani
- Department of Biomedical Laboratory Sciences George Washington University Washington DC 20037 USA
| | - Leon Grayfer
- Department of Biological Sciences George Washington University Washington DC 20052 USA
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Warrier S, Taelman J, Tilleman L, Van der Jeught M, Duggal G, Lierman S, Popovic M, Van Soom A, Peelman L, Van Nieuwerburgh F, Deforce D, Chuva de Sousa Lopes SM, De Sutter P, Heindryckx B. Transcriptional landscape changes during human embryonic stem cell derivation. Mol Hum Reprod 2019; 24:543-555. [PMID: 30239859 DOI: 10.1093/molehr/gay039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 09/14/2018] [Indexed: 01/06/2023] Open
Abstract
STUDY QUESTION What are the transcriptional changes occurring during the human embryonic stem cell (hESC) derivation process, from the inner cell mass (ICM) to post-ICM intermediate stage (PICMI) to hESC stage, that have downstream effects on pluripotency states and differentiation? SUMMARY ANSWER We reveal that although the PICMI is transcriptionally similar to the hESC profile and distinct from ICM, it exhibits upregulation of primordial germ cell (PGC) markers, dependence on leukemia inhibitory factor (LIF) signaling, upregulation of naïve pluripotency-specific signaling networks and appears to be an intermediate switching point from naïve to primed pluripotency. WHAT IS KNOWN ALREADY It is currently known that the PICMI exhibits markers of early and late-epiblast stage. It is suggested that hESCs acquire primed pluripotency features due to the upregulation of post-implantation genes in the PICMI which renders them predisposed towards differentiation cues. Despite this current knowledge, the transcriptional landscape changes during hESC derivation from ICM to hESC and the effect of PICMI on pluripotent state is still not well defined. STUDY DESIGN, SIZE, DURATION To gain insight into the signaling mechanisms that may govern the ICM to PICMI to hESC transition, comparative RNA sequencing (RNA-seq) analysis was performed on preimplantation ICMs, PICMIs and hESCs in biological and technical triplicates (n = 3). PARTICIPANTS/MATERIALS, SETTING, AND METHODS Primed hESCs (XX) were maintained in feeder-free culture conditions on Matrigel for two passages and approximately 50 cells were collected in biological and technical triplicates (n = 3). For ICM sample collection, Day 3, frozen-thawed human embryos were cultured up to day five blastocyst stage and only good quality blastocysts were subjected to laser-assisted micromanipulation for ICM collection (n = 3). Next, day six expanded blastocysts were cultured on mouse embryonic fibroblasts and manual dissection was performed on the PICMI outgrowths between post-plating Day 6 and Day 10 (n = 3). Sequencing of these samples was performed on NextSeq500 and statistical analysis was performed using edgeR (false discovery rate (FDR) < 0.05). MAIN RESULTS AND THE ROLE OF CHANCE Comparative RNA-seq data analysis revealed that 634 and 560 protein-coding genes were significantly up and downregulated in hESCs compared to ICM (FDR < 0.05), respectively. Upon ICM to PICMI transition, 471 genes were expressed significantly higher in the PICMI compared to ICM, while 296 genes were elevated in the ICM alone (FDR < 0.05). Principle component analysis showed that the ICM was completely distinct from the PICMI and hESCs while the latter two clustered in close proximity to each other. Increased expression of E-CADHERIN1 (CDH1) in ICM and intermediate levels in the PICMI was observed, while CDH2 was higher in hESCs, suggesting a role of extracellular matrix components in facilitating pluripotency transition during hESC derivation. The PICMI also showed regulation of naïve-specific LIF and bone morphogenetic protein signaling, differential regulation of primed pluripotency-specific fibroblast growth factor and NODAL signaling pathway components, upregulation of phosphatidylinositol 3-kinase (PI3K)/AKT/mammalian target of rapamycin (mTOR) pathway (PI3K/AKT/mTORC), as well as predisposition towards the germ cell lineage, further confirmed by gene ontology analysis. Hence, the data suggest that the PICMI may serve as an intermediate pluripotency stage which, when subjected to an appropriate culture niche, could aid in enhancing naïve hESC derivation and germ cell differentiation efficiency. LARGE-SCALE DATA Gene Expression Omnibus (GEO) Accession number GSE119378. LIMITATIONS, REASONS FOR CAUTION Owing to the limitation in sample availability, the sex of ICM and PICMI have not been taken into consideration. Obtaining cells from the ICM and maintaining them in culture is not feasible as it will hamper the formation of PICMI and hESC derivation. Single-cell quantitative real-time PCR on low ICM and PICMI cell numbers, although challenging due to limited availability of human embryos, will be advantageous to further corroborate the RNA-seq data on transcriptional changes during hESC derivation process. WIDER IMPLICATIONS OF THE FINDINGS We elucidate the dynamics of transcriptional network changes from the naïve ICM to the intermediate PICMI stage and finally the primed hESC lines. We provide an in-depth understanding of the PICMI and its role in conferring the type of pluripotent state which may have important downstream effects on differentiation, specifically towards the PGC lineage. This knowledge contributes to our limited understanding of the true nature of the human pluripotent state in vitro. STUDY FUNDING/COMPETING INTEREST(S) This research is supported by the Concerted Research Actions funding from Bijzonder Onderzoeksfonds University Ghent (BOF GOA 01G01112).The authors declare no conflict of interest.
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Affiliation(s)
- S Warrier
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - J Taelman
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - L Tilleman
- Laboratory for Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - M Van der Jeught
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - G Duggal
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium.,Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - S Lierman
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - A Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - L Peelman
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - F Van Nieuwerburgh
- Laboratory for Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - D Deforce
- Laboratory for Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - S M Chuva de Sousa Lopes
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium.,Department of Anatomy and Embryology, Leiden University Medical Center, Leiden, The Netherlands
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
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Popovic M, Dheedene A, Christodoulou C, Taelman J, Dhaenens L, Van Nieuwerburgh F, Deforce D, Van den Abbeel E, De Sutter P, Menten B, Heindryckx B. Chromosomal mosaicism in human blastocysts: the ultimate challenge of preimplantation genetic testing? Hum Reprod 2019; 33:1342-1354. [PMID: 29796631 DOI: 10.1093/humrep/dey106] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 04/16/2018] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION To what extent does a trophectoderm (TE) biopsy reliably reflect the chromosomal constitution of the inner cell mass (ICM) in human blastocysts? SUMMARY ANSWER Concordance between TE and ICM was established in 62.1% of the embryos analysed. WHAT IS KNOWN ALREADY Next generation sequencing (NGS) platforms have recently been optimised for preimplantation genetic testing for aneuploidies (PGT-A). However, higher sensitivity has led to an increase in reports of chromosomal mosaicism within a single TE biopsy. This has raised substantial controversy surrounding the prevalence of mosaicism in human blastocysts and the clinical implications of heterogeneity between the TE and ICM. STUDY DESIGN, SIZE, DURATION To define the distribution and rate of mosaicism in human blastocysts, we assessed chromosomal profiles of the ICM and multiple TE portions obtained from the same embryo. We evaluated donated embryos with an unknown chromosomal profile (n = 34), as well as PGT-A blastocysts, previously diagnosed as abnormal or mosaic (n = 24). Our intra-embryo comparison included a total of 232 samples, obtained from 58 embryos. PARTICIPANTS/MATERIALS, SETTING, METHODS Four embryo samples, including the ICM and three distinct TE portions, were acquired from good quality blastocysts by micromanipulation. Whole genome amplification (WGA), followed by NGS was performed on all embryo segments. Profiles were compared between samples from the same embryo, while the results from pretested blastocysts were further correlated to the original report. The embryos investigated in our untested group were obtained from good prognosis patients (n = 25), with maternal age ranging from 23 to 39 years. For the pretested embryo group, maternal age ranged from 23 to 40 years (n = 18). MAIN RESULTS AND THE ROLE OF CHANCE We uncover chromosomal mosaicism, involving both numerical and structural aberrations, in up to 37.9% of the blastocysts analysed. Within the untested group, the overall concordance between the ICM and all TE portions was 55.9%. A normal ICM was detected in 20.6% of blastocysts for which at least one TE portion showed a chromosomal aberration. Conversely, 17.6% of embryos presented with mosaic or uniform abnormalities within the ICM, while showing normal or mosaic TE profiles. For the pretested blastocysts, the overall concordance between the ICM and all TE samples was 70.8%. However, 50% of embryos previously diagnosed with mosaicism did not confirm the original diagnosis. Notably, 31.3% of embryos with a mosaic aberration reported in the original TE biopsy, revealed a euploid profile in the ICM and all three TE samples. Taken together, concordance between the ICM and all TE portions was established in 62.1% of blastocysts, across both embryo groups. Finally, we could not observe a significant effect of age on embryo mosaicism (P = 0.101 untested group; P = 0.7309 pretested group). Similarly, ICM and TE quality were not found to affect the occurrence of chromosomal mosaicism (P = 0.718 and P = 0.462 untested group; P = 1.000 and P = 0.2885 pretested group). LARGE SCALE DATA All data that support the findings of this study are available online in Vivar (http://cmgg.be/vivar) upon request. LIMITATIONS, REASONS FOR CAUTION Evaluating biological variation in some instances remains challenging. The technological limitations of sampling mitotic errors that lead to mosaicism, as well as WGA artefacts, warrant careful interpretation. WIDER IMPLICATIONS OF THE FINDINGS Our results highlight the complex nature of genetic (in)stability during early ontogenesis and indicate that blastocysts harbour a higher rate of chromosomal mosaicism than may have been anticipated. Moreover, our findings reveal an overall high diagnostic sensitivity and relatively low specificity in the context of PGT-A. This suggests that a considerable proportion of embryos are potentially being classified as clinically unsuitable. Ultimately, more precise quantification will benefit the clinical management of embryo mosaicism. STUDY FUNDING/COMPETING INTEREST(S) M.P. is supported by the Special Research Fund, Bijzonder Onderzoeksfonds (BOF01D08114). J.T. and L.D. are supported by the agency for innovation through science (131673, 141441). B.H. and this research are supported by the Special Research Fund, Bijzonder Onderzoeksfonds (BOF15/GOA/011). The authors declare no competing interests. TRIAL REGISTRATION NUMBER Not applicable.
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Affiliation(s)
- M Popovic
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - A Dheedene
- Center for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - C Christodoulou
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - J Taelman
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - L Dhaenens
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - F Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
| | - E Van den Abbeel
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - P De Sutter
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - B Menten
- Center for Medical Genetics, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
| | - B Heindryckx
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium
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Eguizabal C, Aran B, Chuva de Sousa Lopes SM, Geens M, Heindryckx B, Panula S, Popovic M, Vassena R, Veiga A. Two decades of embryonic stem cells: a historical overview. Hum Reprod Open 2019; 2019:hoy024. [PMID: 30895264 PMCID: PMC6396646 DOI: 10.1093/hropen/hoy024] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/10/2018] [Indexed: 12/12/2022] Open
Abstract
STUDY QUESTION How did the field of stem cell research develop in the years following the derivation of the first human embryonic stem cell (hESC) line? SUMMARY ANSWER Supported by the increasing number of clinical trials to date, significant technological advances in the past two decades have brought us ever closer to clinical therapies derived from pluripotent cells. WHAT IS KNOWN ALREADY Since their discovery 20 years ago, the use of human pluripotent stem cells has progressed tremendously from bench to bedside. Here, we provide a concise review of the main keystones of this journey and focus on ongoing clinical trials, while indicating the most relevant future research directions. STUDY DESIGN, SIZE, DURATION This is a historical narrative, including relevant publications in the field of pluripotent stem cells (PSC) derivation and differentiation, recounted both through scholarly research of published evidence and interviews of six pioneers who participated in some of the most relevant discoveries in the field. PARTICIPANTS/MATERIALS, SETTING, METHODS The authors all contributed by researching the literature and agreed upon body of works. Portions of the interviews of the field pioneers have been integrated into the review and have also been included in full for advanced reader interest. MAIN RESULTS AND THE ROLE OF CHANCE The stem cell field is ever expanding. We find that in the 20 years since the derivation of the first hESC lines, several relevant developments have shaped the pluripotent cell field, from the discovery of different states of pluripotency, the derivation of induced PSC, the refinement of differentiation protocols with several clinical trials underway, as well as the recent development of organoids. The challenge for the years to come will be to validate and refine PSCs for clinical use, from the production of highly defined cell populations in clinical grade conditions to the possibility of creating replacement organoids for functional, if not anatomical, function restoration. LIMITATIONS, REASONS FOR CAUTION This is a non-systematic review of current literature. Some references may have escaped the experts’ analysis due to the exceedingly diverse nature of the field. As the field of regenerative medicine is rapidly advancing, some of the most recent developments may have not been captured entirely. WIDER IMPLICATIONS OF THE FINDINGS The multi-disciplinary nature and tremendous potential of the stem cell field has important implications for basic as well as translational research. Recounting these activities will serve to provide an in-depth overview of the field, fostering a further understanding of human stem cell and developmental biology. The comprehensive overview of clinical trials and expert opinions included in this narrative may serve as a valuable scientific resource, supporting future efforts in translational approaches. STUDY FUNDING/COMPETING INTEREST(S) ESHRE provided funding for the authors’ on-site meeting and discussion during the preparation of this manuscript. S.M.C.S.L. is funded by the European Research Council Consolidator (ERC-CoG-725722-OVOGROWTH). M.P. is supported by the Special Research Fund, Bijzonder Onderzoeksfonds (BOF01D08114). M.G. is supported by the Methusalem grant of Vrije Universiteit Brussel, in the name of Prof. Karen Sermon and by Innovation by Science and Technology in Flanders (IWT, Project Number: 150042). A.V. and B.A. are supported by the Plataforma de Proteomica, Genotipado y Líneas Celulares (PT1770019/0015) (PRB3), Instituto de Salud Carlos III. Research grant to B.H. by the Research Foundation—Flanders (FWO) (FWO.KAN.2016.0005.01 and FWO.Project G051516N). There are no conflicts of interest to declare. TRIAL REGISTRATION NUMBER Not applicable. ESHRE Pages are not externally peer reviewed. This article has been approved by the Executive Committee of ESHRE.
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Affiliation(s)
- C Eguizabal
- Cell Therapy and Stem Cell Group, Basque Center for Blood Transfusion and Human Tissues, Barrio Labeaga S/N, Galdakao, Spain
| | - B Aran
- Barcelona Stem Cell Bank, Centre of Regenerative Medicine in Barcelona, Barcelona, Spain
| | - S M Chuva de Sousa Lopes
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden, The Netherlands.,Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - M Geens
- Research Group Reproduction and Genetics, Vrije Univeristeit Brussel, Laarbeeklaan 103, Jette (Brussels), Belgium
| | - B Heindryckx
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | - S Panula
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - M Popovic
- Ghent Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, Ghent, Belgium
| | | | - A Veiga
- Barcelona Stem Cell Bank, Centre of Regenerative Medicine in Barcelona, Barcelona, Spain.,Dexeus Mujer, Hospital Universitari Dexeus, Barcelona, Spain
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Vandenberghe LTM, Heindryckx B, Smits K, Popovic M, Szymanska K, Bonte D, Peelman L, Deforce D, De Sutter P, Van Soom A, De Schauwer C. Intracellular localisation of platelet-activating factor during mammalian embryo development in vitro: a comparison of cattle, mouse and human. Reprod Fertil Dev 2018; 31:658-670. [PMID: 30458920 DOI: 10.1071/rd18146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 10/05/2018] [Indexed: 11/23/2022] Open
Abstract
Platelet-activating factor (PAF) is a well-known marker for embryo quality and viability. For the first time, we describe an intracellular localisation of PAF in oocytes and embryos of cattle, mice and humans. We showed that PAF is represented in the nucleus, a signal that was lost upon nuclear envelope breakdown. This process was confirmed by treating the embryos with nocodazole, a spindle-disrupting agent that, as such, arrests the embryo in mitosis, and by microinjecting a PAF-specific antibody in bovine MII oocytes. The latter resulted in the absence of nuclear PAF in the pronuclei of the zygote and reduced further developmental potential. Previous research indicates that PAF is released and taken up from the culture medium by preimplantation embryos invitro, in which bovine serum albumin (BSA) serves as a crucial carrier molecule. In the present study we demonstrated that nuclear PAF does not originate from an extracellular source because embryos cultured in polyvinylpyrrolidone or BSA showed similar levels of PAF in their nuclei. Instead, our experiments indicate that cytosolic phospholipase A2 (cPLA2) is likely to be involved in the intracellular production of PAF, because treatment with arachidonyl trifluoromethyl ketone (AACOCF3), a specific cPLA2 inhibitor, clearly lowered PAF levels in the nuclei of bovine embryos.
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Affiliation(s)
- L T M Vandenberghe
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - B Heindryckx
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - K Smits
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - M Popovic
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - K Szymanska
- Physiology Group, Department of Basic Medical Sciences, Ghent University, De Pintelaan 185, 9000 Ghent, Belgium
| | - D Bonte
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - L Peelman
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium
| | - D Deforce
- Laboratory of Pharmaceutical Biotechnology, Ghent University, Harelbekestraat 72, 9000 Ghent, Belgium
| | - P De Sutter
- Ghent-Fertility and Stem cell Team (G-FaST), Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium
| | - A Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - C De Schauwer
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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Scholl S, De Koning L, Popovic M, Anne D, Floquet A, Berns E, Kenter G, Kereszt A, Girard E, von der Leyen H, Dureau S, Fourchotte V, Rouzier R, Kamal M, Consortium R. Molecular profiles as a function of treatment response/progression free survival in a prospective cervical cancer study (RAIDs). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy285.167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Koubourli DV, Yaparla A, Popovic M, Grayfer L. Amphibian ( Xenopus laevis) Interleukin-8 (CXCL8): A Perspective on the Evolutionary Divergence of Granulocyte Chemotaxis. Front Immunol 2018; 9:2058. [PMID: 30258441 PMCID: PMC6145007 DOI: 10.3389/fimmu.2018.02058] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 08/21/2018] [Indexed: 12/26/2022] Open
Abstract
The glutamic acid-leucine-arginine (ELR) motif is a hallmark feature shared by mammalian inflammatory CXC chemokines such the granulocyte chemo-attractant CXCL8 (interleukin-8, IL-8). By contrast, most teleost fish inflammatory chemokines lack this motif. Interestingly, the amphibian Xenopus laevis encodes multiple isoforms of CXCL8, one of which (CXCL8a) possesses an ELR motif, while another (CXCL8b) does not. These CXCL8 isoforms exhibit distinct expression patterns during frog development and following immune challenge of animals and primary myeloid cultures. To define potential functional differences between these X. laevis CXCL8 chemokines, we produced them in recombinant form (rCXCL8a and rCXCL8b) and performed dose-response chemotaxis assays. Our results indicate that compared to rCXCL8b, rCXCL8a is a significantly more potent chemo-attractant of in vivo-derived tadpole granulocytes and of in vitro-differentiated frog bone marrow granulocytes. The mammalian CXCL8 mediates its effects through two distinct chemokine receptors, CXCR1 and CXCR2 and our pharmacological inhibition of these receptors in frog granulocytes indicates that the X. laevis CXCL8a and CXCL8b both chemoattract tadpole and adult frog granulocytes by engaging CXCR1 and CXCR2. To delineate which frog cells are recruited by CXCL8a and CXCL8b in vivo, we injected tadpoles and adult frogs intraperitoneally with rCXCL8a or rCXCL8b and recovered the accumulated cells by lavage. Our transcriptional and cytological analyses of these tadpole and adult frog peritoneal exudates indicate that they are comprised predominantly of granulocytes. Interestingly, the granulocytes recruited into the tadpole, but not adult frog peritonea by rCXCL8b, express significantly greater levels of several pan immunosuppressive genes.
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Affiliation(s)
- Daphne V Koubourli
- Department of Biological Sciences, George Washington University, Washington, DC, United States
| | - Amulya Yaparla
- Department of Biological Sciences, George Washington University, Washington, DC, United States
| | - Milan Popovic
- Department of Biological Sciences, George Washington University, Washington, DC, United States
| | - Leon Grayfer
- Department of Biological Sciences, George Washington University, Washington, DC, United States
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Nabieva N, Fehm T, Häberle L, de Waal J, Rezai M, Baier B, Baake G, Kolberg HC, Guggenberger M, Warm M, Harbeck N, Wuerstlein R, Deuker JU, Dall P, Richter B, Wachsmann G, Brucker C, Siebers JW, Popovic M, Kuhn T, Wolf C, Vollert HW, Breitbach GP, Janni W, Landthaler R, Kohls A, Rezek D, Noesselt T, Fischer G, Henschen S, Praetz T, Heyl V, Kühn T, Krauss T, Thomssen C, Hohn A, Tesch H, Mundhenke C, Hein A, Hack CC, Schmidt K, Belleville E, Brucker SY, Kümmel S, Beckmann MW, Wallwiener D, Hadji P, Fasching PA. Influence of side-effects on early therapy persistence with letrozole in post-menopausal patients with early breast cancer: Results of the prospective EvAluate-TM study. Eur J Cancer 2018; 96:82-90. [PMID: 29679775 DOI: 10.1016/j.ejca.2018.03.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/15/2018] [Accepted: 03/19/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND Endocrine treatment (ET) with an aromatase inhibitor (AI) is the treatment of choice in post-menopausal patients with hormone receptor-positive early breast cancer (EBC). However, adverse events (AEs) often lead to treatment discontinuation. This analysis aimed to identify side-effects that lead to patients failing to persist with letrozole treatment. PATIENTS AND METHODS Post-menopausal hormone receptor-positive EBC patients starting ET with letrozole were enroled in EvAluate-TM, a non-interventional study. Information regarding treatment compliance and persistence was gathered in months 6 and 12. Persistence was defined as the time from 30 d after the start to the end of treatment. The influence on persistence of musculoskeletal syndrome, menopausal disorder, sleep disorder and other AEs within the first 30 d was analysed using Cox regression analyses. RESULTS Among 3887 patients analysed, the persistence rate after 12 months was >85%. In all, 568 patients (14.6%) discontinued the treatment, 358 of whom (63.0%) did so only because of side-effects. The main AEs influencing persistence were musculoskeletal symptoms (hazard ratio [HR] 2.55; 95% confidence interval [CI], 1.90-3.42), sleep disorders (HR 1.95; 95% CI, 1.41-2.70) and other AEs (HR 2.03; 95% CI, 1.51-2.73). Menopausal disorder was not associated with non-persistence (HR 1.17; 95% CI, 0.74-1.84). CONCLUSIONS These results suggest that side-effects of AIs such as musculoskeletal syndrome and sleep disorder lead to ET discontinuation within the first treatment year in significant numbers of EBC patients. Compliance programmes adapted for subgroups that are at risk for early non-persistence might help to ensure the recommended therapy duration. CLINICAL TRIALS NUMBER CFEM345DDE19.
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Affiliation(s)
- N Nabieva
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - T Fehm
- Department of Gynecology, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany; Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - L Häberle
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany; Biostatistics Unit, Department of Gynecology, Erlangen University Hospital, Erlangen, Germany
| | - J de Waal
- Department of Gynecology, Dachau Clinic, Dachau, Germany
| | - M Rezai
- Luisen-Hospital Düsseldorf, Düsseldorf, Germany
| | - B Baier
- Department of Gynecology, Dachau Clinic, Dachau, Germany
| | - G Baake
- Oncological Medical Practice Pinneberg, Pinneberg, Germany
| | | | | | - M Warm
- Breast Center, Department of Gynecology, Cologne University Hospital, Cologne, Germany; Breast Center, Clinics of Cologne GmbH, Holweide, Cologne, Germany
| | - N Harbeck
- Breast Center, Department of Gynecology, Cologne University Hospital, Cologne, Germany; University Hospital Munich (LMU), Dept. of Gynecology and Obstetrics, Breast Center and CCC Munich, Munich, Germany
| | - R Wuerstlein
- Breast Center, Department of Gynecology, Cologne University Hospital, Cologne, Germany; University Hospital Munich (LMU), Dept. of Gynecology and Obstetrics, Breast Center and CCC Munich, Munich, Germany
| | - J-U Deuker
- Vinzenz-Hospital Hannover GmbH, Hannover, Germany
| | - P Dall
- Department of Gynecology, Lüneburg Clinic, Lüneburg, Germany
| | - B Richter
- Elbland Clinics, Meissen-Radebeul, Germany
| | - G Wachsmann
- County Hospital of Böblingen, Böblingen, Germany
| | - C Brucker
- Department of Gynecology, University Hospital, Paracelsus Private Medical University of Nuremberg, Nuremberg, Germany
| | - J W Siebers
- Department of Gynecology, St. Josef's Hospital, Offenburg, Germany
| | - M Popovic
- Department of Gynecology, Bayreuth Clinic GmbH, CCC ER-EMN, Bayreuth, Germany
| | - T Kuhn
- Karl-Olga-Hospital Stuttgart, Diakonie Klinikum Stuttgart, Stuttgart, Germany
| | - C Wolf
- Medical Center Ulm, Ulm, Germany
| | - H-W Vollert
- Friedrichshafen Clinic, Friedrichshafen, Germany
| | - G-P Breitbach
- Department of Gynecology, Neunkirchen Clinic, Neunkirchen, Germany
| | - W Janni
- Department of Gynecology, Ulm University Hospital, Ulm, Germany
| | - R Landthaler
- Gynecological Medical Practice of the County Hospital of Krumbach, Krumbach, Germany
| | - A Kohls
- Evangelic County Hospital Ludwigsfelde-Teltow, Ludwigsfelde-Teltow, Germany
| | - D Rezek
- Marien-Hospital Wesel, Wesel, Germany
| | - T Noesselt
- Department of Gynecology of the County Hospital of Hameln, Hameln, Germany
| | - G Fischer
- Mittweida Hospital gGmbH, Mittweida, Germany
| | - S Henschen
- Johanniter Hospital Genthin Stendal gGmbH, Hansestadt Stendal, Germany
| | - T Praetz
- Caritas-Hospital Bad Mergentheim, Bad Mergentheim, Germany
| | - V Heyl
- Asklepios Paulinen Clinic Wiesbaden, Wiesbaden, Germany
| | - T Kühn
- Department of Gynecology, Esslingen Clinics a.N., Esslingen, Germany
| | - T Krauss
- Department of Gynecology Passau, Passau, Germany
| | - C Thomssen
- Department of Gynecology, Martin Luther University of Halle-Wittenberg, Halle (Saale), Germany
| | - A Hohn
- County Hospital Kiel GmbH, Kiel, Germany
| | - H Tesch
- Oncology Bethanien Frankfurt, Frankfurt, Germany
| | - C Mundhenke
- Department of Gynecology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A Hein
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - C C Hack
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - K Schmidt
- Novartis Pharma GmbH Nuremberg, Nuremberg, Germany
| | | | - S Y Brucker
- Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - S Kümmel
- Breast Unit, Essen Mitte Clinics, Evang. Huyssens-Stiftung/Knappschaft GmbH, Essen, Germany
| | - M W Beckmann
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - D Wallwiener
- Department of Gynecology, University of Tübingen, Tübingen, Germany
| | - P Hadji
- Department of Bone Oncology, Nordwest Hospital, Frankfurt, Germany
| | - P A Fasching
- Department of Obstetrics and Gynecology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-European Metropolitan Area Nuremberg, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany.
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Susnjar S, Popovic L, Cvetanovic A, Stanic N, Citic J, Kolarov-Bjelobrk I, Popovic M, Nedovic N, Stojanovic A, Matovina-Brko G, Serovic K, Milosavljevic N, Murtezani Z, Kezic I, Gavrilovic D, Radulovic S. Real world data: Trastuzumab w/o concurrent endocrine therapy in luminal HER2-positive metastatic breast cancer resulted in decreased overall survival. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30561-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yaparla A, Popovic M, Grayfer L. Differentiation-dependent antiviral capacities of amphibian ( Xenopus laevis) macrophages. J Biol Chem 2017; 293:1736-1744. [PMID: 29259133 DOI: 10.1074/jbc.m117.794065] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 12/12/2017] [Indexed: 12/30/2022] Open
Abstract
Infections by ranaviruses such as Frog virus 3 (Fv3), are significantly contributing to worldwide amphibian population declines. Notably, amphibian macrophages (Mφs) are important to both the Fv3 infection strategies and the immune defense against this pathogen. However, the mechanisms underlying amphibian Mφ Fv3 susceptibility and resistance remain unknown. Mφ differentiation is mediated by signaling through the colony-stimulating factor-1 receptor (CSF-1R) which is now known to be bound not only by CSF-1, but also by the unrelated interleukin-34 (IL-34) cytokine. Pertinently, amphibian (Xenopus laevis) Mφs differentiated by CSF-1 and IL-34 are highly susceptible and resistant to Fv3, respectively. Accordingly, in the present work, we elucidate the facets of this Mφ Fv3 susceptibility and resistance. Because cellular resistance to viral replication is marked by expression of antiviral restriction factors, it was intuitive to find that IL-34-Mφs possess significantly greater mRNA levels of select restriction factor genes than CSF-1-Mφs. Xenopodinae amphibians have highly expanded repertoires of antiviral interferon (IFN) cytokine gene families, and our results indicated that in comparison with the X. laevis CSF-1-Mφs, the IL-34-Mφs express substantially greater transcripts of representative IFN genes, belonging to distinct gene family clades, as well as their cognate receptor genes. Finally, we demonstrate that IL-34-Mφ-conditioned supernatants confer IFN-mediated anti-Fv3 protection to the virally susceptible X. laevis kidney (A6) cell line. Together, this work underlines the differentiation pathways leading to Fv3-susceptible and -resistant amphibian Mφ populations and defines the molecular mechanisms responsible for these differences.
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Affiliation(s)
- Amulya Yaparla
- From the Department of Biological Sciences, George Washington University, Washington, D. C. 20052-0066
| | - Milan Popovic
- From the Department of Biological Sciences, George Washington University, Washington, D. C. 20052-0066
| | - Leon Grayfer
- From the Department of Biological Sciences, George Washington University, Washington, D. C. 20052-0066
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Adil K, Popovic M, Cury F, Faria S, Souhami L. Anisotropic Bladder Planning Target Volume is Adequate When Using Cone Beam Computed Tomography as a Form of Image Guided Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Vucicevic J, Popovic M, Nikolic K, Filipic S, Obradovic D, Agbaba D. Use of biopartitioning micellar chromatography and RP-HPLC for the determination of blood-brain barrier penetration of α-adrenergic/imidazoline receptor ligands, and QSPR analysis. SAR QSAR Environ Res 2017; 28:235-252. [PMID: 28332439 DOI: 10.1080/1062936x.2017.1302506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 02/28/2017] [Indexed: 06/06/2023]
Abstract
For this study, 31 compounds, including 16 imidazoline/α-adrenergic receptor (IRs/α-ARs) ligands and 15 central nervous system (CNS) drugs, were characterized in terms of the retention factors (k) obtained using biopartitioning micellar and classical reversed phase chromatography (log kBMC and log kwRP, respectively). Based on the retention factor (log kwRP) and slope of the linear curve (S) the isocratic parameter (φ0) was calculated. Obtained retention factors were correlated with experimental log BB values for the group of examined compounds. High correlations were obtained between logarithm of biopartitioning micellar chromatography (BMC) retention factor and effective permeability (r(log kBMC/log BB): 0.77), while for RP-HPLC system the correlations were lower (r(log kwRP/log BB): 0.58; r(S/log BB): -0.50; r(φ0/Pe): 0.61). Based on the log kBMC retention data and calculated molecular parameters of the examined compounds, quantitative structure-permeability relationship (QSPR) models were developed using partial least squares, stepwise multiple linear regression, support vector machine and artificial neural network methodologies. A high degree of structural diversity of the analysed IRs/α-ARs ligands and CNS drugs provides wide applicability domain of the QSPR models for estimation of blood-brain barrier penetration of the related compounds.
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Affiliation(s)
- J Vucicevic
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - M Popovic
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - K Nikolic
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - S Filipic
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - D Obradovic
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - D Agbaba
- a Department of Pharmaceutical Chemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
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Schmidt M, Ozalinskaite A, Popovic M, Humenikova M, Lang-Schwarz C, Zumbrägel A, Fersis N. Harnblasenmetastasierung: seltene Filiaelokalisation des invasiv-lobulären Mammakarzinoms. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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41
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Li W, van der Velden J, Raman S, Popovic M, Lam H, Wong K, Ngan R, Burbach M, de Angelis C, McDonald R, Chow E. Prophylaxis of Radiation-Induced Nausea and Vomiting: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Popovic M, Velicki R, Bjelanovic J, Jevtic M, Torovic L, Bijelovic S. From global policy to local action: Salt intake reduction in the City of Novi Sad, Serbia. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv176.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kristina FK, Popovic M, Kocjan J, Zivanovic M, Seme K, Poljak M. Detection of human polyomaviruses JC and BK in brain tissues from patients with progressive multifocal leukoencephalopathy using in situ hybridization and polymerase chain reaction. J Clin Virol 2015. [DOI: 10.1016/j.jcv.2015.07.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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44
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Liang L, Bekerat H, Tomic N, DeBlois F, Devic S, Morcos M, Popovic M, Watson P, Seuntjens J. SU-E-T-462: Impact of the Radiochromic Film Energy Response On Dose Measurements of Low Energy Electronic Brachytherapy Sources. Med Phys 2015. [DOI: 10.1118/1.4924824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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45
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Petrovic-Djergovic D, Popovic M, Chittiprol S, Cortado H, Ransom RF, Partida-Sánchez S. CXCL10 induces the recruitment of monocyte-derived macrophages into kidney, which aggravate puromycin aminonucleoside nephrosis. Clin Exp Immunol 2015; 180:305-15. [PMID: 25561167 DOI: 10.1111/cei.12579] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2014] [Indexed: 01/11/2023] Open
Abstract
The mechanism responsible for trafficking of monocyte-derived macrophages into kidney in the puromycin aminonucleoside model of nephrotic syndrome in rats (PAN-NS), and the significance of this infiltration, remain largely unknown. CXCL10, a chemokine secreted in many T helper type 1 (Th1) inflammatory diseases, exhibits important roles in trafficking of monocytes and activated T cells. We hypothesized that induction of circulating interferon (IFN)-γ and glomerular tumour necrosis factor (TNF)-α during PAN-NS would stimulate the release of CXCL10 by podocytes, leading to infiltration of activated immune cells and greater glomerular injury. We found that serum IFN-γ, glomerular Cxcl10 mRNA and intra- and peri-glomerular macrophage infiltration were induced strongly during the late acute phase of PAN-NS in Wistar rats, but not in nude (Foxn1(rnu/rnu) ) rats lacking functional effector T lymphocytes. Wistar rats also developed significantly greater proteinuria than nude rats, which could be abolished by macrophage depletion. Stimulation of cultured podocytes with both IFN-γ and TNF-α markedly induced the expression of Cxcl10 mRNA and CXCL10 secretion. Together, these data support our hypothesis that increased circulating IFN-γ and glomerular TNF-α induce synergistically the production and secretion of CXCL10 by podocytes, attracting activated macrophages into kidney tissue. The study also suggests that IFN-γ, secreted from Th1 lymphocytes, may prime proinflammatory macrophages that consequently aggravate renal injury.
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Affiliation(s)
- D Petrovic-Djergovic
- Centers for Clinical and Translational Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
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46
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Watson P, Popovic M, Seuntjens J. PO-0820: An in-air Monte Carlo investigation of a miniature low energy x-ray tube. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40812-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Huschner F, Grousseau E, Brigham CJ, Plassmeier J, Popovic M, Rha C, Sinskey AJ. Development of a feeding strategy for high cell and PHA density fed-batch fermentation of Ralstonia eutropha H16 from organic acids and their salts. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bahrami H, Porter E, Santorelli A, Gosselin B, Popovic M, Rusch LA. Flexible sixteen monopole antenna array for microwave breast cancer detection. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2014:3775-8. [PMID: 25570813 DOI: 10.1109/embc.2014.6944445] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Radar based microwave imaging (MI) has been widely studied for breast cancer detection in recent times. Sensing dielectric property differences of tissues over a wide frequency band has been made possible by ultra-wideband (UWB) techniques. In this paper, a flexible, compact monopole antenna on a 100 μm Kapton polyimide is designed, using a high frequency structure simulator (HFSS), to be in contact with biological breast tissues over the 2-5GHz frequency range. The antenna parameters are optimized to obtain a good impedance match over the required frequency range. The designed antenna size is 18mm × 18mm. Further, a flexible conformal 4×4 ultra-wideband antenna array, in a format similar to that of a bra, was developed for a radar-based breast cancer detection system.
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Ose J, Fortner RT, Schock H, Peeters PH, Onland-Moret NC, Bueno-de-Mesquita HB, Weiderpass E, Gram IT, Overvad K, Tjonneland A, Dossus L, Fournier A, Baglietto L, Trichopoulou A, Benetou V, Trichopoulos D, Boeing H, Masala G, Krogh V, Matiello A, Tumino R, Popovic M, Obón-Santacana M, Larrañaga N, Ardanaz E, Sánchez MJ, Menéndez V, Chirlaque MD, Travis RC, Khaw KT, Brändstedt J, Idahl A, Lundin E, Rinaldi S, Kuhn E, Romieu I, Gunter MJ, Merritt MA, Riboli E, Kaaks R. Insulin-like growth factor I and risk of epithelial invasive ovarian cancer by tumour characteristics: results from the EPIC cohort. Br J Cancer 2015; 112:162-6. [PMID: 25349976 PMCID: PMC4453611 DOI: 10.1038/bjc.2014.566] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 09/24/2014] [Accepted: 10/08/2014] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Prospective studies on insulin-like growth factor I (IGF-I) and epithelial ovarian cancer (EOC) risk are inconclusive. Data suggest risk associations vary by tumour characteristics. METHODS We conducted a nested case-control study in the European Prospective Investigation into Cancer and Nutrition (EPIC) to evaluate IGF-I concentrations and EOC risk by tumour characteristics (n=565 cases). Multivariable conditional logistic regression models were used to estimate associations. RESULTS We observed no association between IGF-I and EOC overall or by tumour characteristics. CONCLUSIONS In the largest prospective study to date was no association between IGF-I and EOC risk. Pre-diagnostic serum IGF-I concentrations may not influence EOC risk.
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Affiliation(s)
- J Ose
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
| | - R T Fortner
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
| | - H Schock
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
| | - P H Peeters
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, 3584 Utrecht, The Netherlands
| | - N C Onland-Moret
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, 3584 Utrecht, The Netherlands
| | - H B Bueno-de-Mesquita
- National Institute for Public Health and the Environment (RIVM), 3720 Bilthoven, The Netherlands
- Department of Gastroenterology and Hepatology, University Medical Centre, 3542 Utrecht, The Netherlands
- Department of Epidemiology and Statistics, the School of Public Health, Imperial College London, SW72AZ London, UK
| | - E Weiderpass
- Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 90109 Tromsø, Norway
- Cancer Registry of Norway, 0304 Oslo, Norway
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 17177 Stockholm, Sweden
- Department of Genetic Epidemiology, Folkhälsan Research Center, 00014 Helsinki, Finland
| | - I T Gram
- Department of Community Medicine, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway
| | - K Overvad
- Department of Public Health, Section for Epidemiology, Aarhus University, 8000 Aarhus, Denmark
| | - A Tjonneland
- Institute of Cancer Epidemiology, Danish Cancer Society Research Center, 2100 Copenhagen, Denmark
| | - L Dossus
- Inserm, Centre for research in Epidemiology and Population Health (CESP), U1018, Nutrition, Hormones and Women's Health team, F-94805 Villejuif, France
- Univ Paris Sud, UMRS 1018, F-94805 Villejuif, France
- IGR, F-94805 Villejuif, France
| | - A Fournier
- Inserm, Centre for research in Epidemiology and Population Health (CESP), U1018, Nutrition, Hormones and Women's Health team, F-94805 Villejuif, France
- Univ Paris Sud, UMRS 1018, F-94805 Villejuif, France
- IGR, F-94805 Villejuif, France
| | - L Baglietto
- Cancer Epidemiology Centre, Cancer Council of Victoria, Melbourne, 3004 Victoria, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, University of Melbourne, Melbourne, 3004 Victoria, Australia
| | - A Trichopoulou
- Bureau of Epidemiologic Research, Academy of Athens, 23 Alexandroupoleos Street, Athens GR-115 27, Greece
- Hellenic Health Foundation, 13 Kaisareias Street, Athens GR-115 27, Greece
| | - V Benetou
- Hellenic Health Foundation, 13 Kaisareias Street, Athens GR-115 27, Greece
- Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, 75M Asias Street, Goudi, Athens GR-115 27, Greece
| | - D Trichopoulos
- Bureau of Epidemiologic Research, Academy of Athens, 23 Alexandroupoleos Street, Athens GR-115 27, Greece
- Hellenic Health Foundation, 13 Kaisareias Street, Athens GR-115 27, Greece
- Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - H Boeing
- Department of Epidemiology, German Institute of Human Nutrition (DIfE) 14558 Potsdam-Rehbrücke, Nuthetal, Germany
| | - G Masala
- Molecular and Nutritional Epidemiology Unit, Cancer Research and Prevention Institute—ISPO, 50139 Florence, Italy
| | - V Krogh
- Epidemiology and Prevention Unit, Fondazione IRCCS Instituto Nazionale dei Tumori, Via Veneziani 1, 20133 Milano, Italy
| | - A Matiello
- Department of Clinical and Experimental Medicine, Federico II University, 80131 Naples, Italy
| | - R Tumino
- Cancer Registry and Histopathology Unit, ‘Civic - M.P. Arezzo' Hospita, ASP 97100 Ragusa, Italy
| | - M Popovic
- Unit of Cancer Epidemiology, AO Citta' della Salute e della Scienza, Department of Medical Sciences, University of Turin and Center for Cancer Prevention (CPO-Piemonte), 10126 Turin, Italy
| | - M Obón-Santacana
- Unit of Nutrition, Environment and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology (ICO-IDIBELL), 08908 Barcelona, Spain
| | - N Larrañaga
- Public Health Division of Gipuzkoa-BIODonostia Research Institute, Basque Regional Health Department, 20013 San Sebastian, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER), 28029 Madrid, Spain
| | - E Ardanaz
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER), 28029 Madrid, Spain
- Navarre Public Health Institute, 31006 Pamplona, Spain
| | - M-J Sánchez
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER), 28029 Madrid, Spain
- Andalusian School of Public Health, 18011 Granada, Spain
| | - V Menéndez
- Public Health Directorate, 33006 Asturias, Spain
| | - M-D Chirlaque
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER), 28029 Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Authority, 30008 Murcia, Spain
| | - R C Travis
- Cancer Epidemiology Unit, University of Oxford, OX30NR Oxford, UK
| | - K-T Khaw
- Department of Public Health and Primary Care, University of Cambridge, CB22QQ Cambridge, UK
| | - J Brändstedt
- Medical Department of Surgery, Malmö University Hospital, 20502 Malmö, Sweden
| | - A Idahl
- Department of Clinical Sciences, Obstetrics and Gynecology and Department of Public Health and Clinical Medicine, Nutritional Research Umeå University, 90185 Umeå, Sweden
| | - E Lundin
- Department of Medical Biosciences, Pathology Umeå University, 90185 Umeå, Sweden
| | - S Rinaldi
- International Agency for Research on Cancer, 69372 Lyon, France
| | - E Kuhn
- International Agency for Research on Cancer, 69372 Lyon, France
| | - I Romieu
- International Agency for Research on Cancer, 69372 Lyon, France
| | - M J Gunter
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, SW72AZ London, UK
| | - M A Merritt
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, SW72AZ London, UK
| | - E Riboli
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, SW72AZ London, UK
| | - R Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center, 69120 Heidelberg, Germany
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Popovic M, Dani R, Stalevic L. Iside effects of salicylates (ACK), corticosteroids and imunomodulators on the gastroduodenal mucosa - medication used in rheumatoid arthritis treatment. Praxis Med 2015. [DOI: 10.5937/pramed1502035p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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