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Macrae TA, Lazo J, Viduya J, Florez R, Dewey K, Gao Y, Singer JP, Hays SR, Golden JA, Kukreja J, Greenland JR, Calabrese DR. Frailty and genetic risk predict fracture after lung transplantation. Am J Transplant 2023; 23:214-222. [PMID: 36695698 PMCID: PMC10037703 DOI: 10.1016/j.ajt.2022.11.017] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/15/2022] [Accepted: 11/29/2022] [Indexed: 01/07/2023]
Abstract
Fractures negatively impact quality of life and survival. We hypothesized that recipient frailty score and genetic profile measured before transplant would predict risk of fracture after lung transplant. We conducted a retrospective cohort study of bone mineral density (BMD) and fracture among lung transplant recipients at a single center. The association between predictors and outcomes were assessed by multivariable time-dependent Cox models or regression analysis. Among the 284 participants, osteoporosis and fracture were highly prevalent. Approximately 59% of participants had posttransplant osteopenia, and 35% of participants developed at least 1 fracture. Low BMD was associated with a polygenic osteoporosis risk score, and the interaction between genetic score and BMD predicted fracture. Pretransplant frailty was associated with risk for spine and hip fracture, which were not associated with chronic lung allograft dysfunction or death. Chest fractures were the most frequent type of fracture and conferred a 2.2-fold increased risk of chronic lung allograft dysfunction or death (time-dependent P < .001). Pneumonia, pleural effusions, and acute rejection frequently occurred surrounding chest fracture. Pretransplant frailty and recipient genotype may aid clinical risk stratification for fracture after transplant. Fracture carries significant morbidity, underscoring the importance of surveillance and osteoporosis prevention.
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Affiliation(s)
- Trisha A Macrae
- Department of Medicine, University of California, San Francisco, California, USA
| | - Jose Lazo
- Department of Clinical Pharmacy, University of California, San Francisco, California, USA
| | - Judy Viduya
- Department of Clinical Pharmacy, University of California, San Francisco, California, USA
| | - Rebecca Florez
- Department of Clinical Pharmacy, University of California, San Francisco, California, USA
| | - Katherine Dewey
- Department of Clinical Pharmacy, University of California, San Francisco, California, USA
| | - Ying Gao
- Department of Medicine, University of California, San Francisco, California, USA
| | - Jonathan P Singer
- Department of Medicine, University of California, San Francisco, California, USA
| | - Steven R Hays
- Department of Medicine, University of California, San Francisco, California, USA
| | - Jeffrey A Golden
- Department of Medicine, University of California, San Francisco, California, USA
| | - Jasleen Kukreja
- Department of Surgery, University of California, San Francisco, California, USA
| | - John R Greenland
- Department of Medicine, University of California, San Francisco, California, USA; Medical Service, Veterans Affairs Health Care System, San Francisco, California, USA
| | - Daniel R Calabrese
- Department of Medicine, University of California, San Francisco, California, USA; Medical Service, Veterans Affairs Health Care System, San Francisco, California, USA.
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2
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Macrae TA, Ramalho-Santos M. The deubiquitinase Usp9x regulates PRC2-mediated chromatin reprogramming during mouse development. Nat Commun 2021; 12:1865. [PMID: 33767158 PMCID: PMC7994559 DOI: 10.1038/s41467-021-21910-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/19/2020] [Accepted: 02/19/2021] [Indexed: 01/31/2023] Open
Abstract
Pluripotent cells of the mammalian embryo undergo extensive chromatin rewiring to prepare for lineage commitment after implantation. Repressive H3K27me3, deposited by Polycomb Repressive Complex 2 (PRC2), is reallocated from large blankets in pre-implantation embryos to mark promoters of developmental genes. The regulation of this global redistribution of H3K27me3 is poorly understood. Here we report a post-translational mechanism that destabilizes PRC2 to constrict H3K27me3 during lineage commitment. Using an auxin-inducible degron system, we show that the deubiquitinase Usp9x is required for mouse embryonic stem (ES) cell self-renewal. Usp9x-high ES cells have high PRC2 levels and bear a chromatin and transcriptional signature of the pre-implantation embryo, whereas Usp9x-low ES cells resemble the post-implantation, gastrulating epiblast. We show that Usp9x interacts with, deubiquitinates and stabilizes PRC2. Deletion of Usp9x in post-implantation embryos results in the derepression of genes that normally gain H3K27me3 after gastrulation, followed by the appearance of morphological abnormalities at E9.5, pointing to a recurrent link between Usp9x and PRC2 during development. Usp9x is a marker of "stemness" and is mutated in various neurological disorders and cancers. Our results unveil a Usp9x-PRC2 regulatory axis that is critical at peri-implantation and may be redeployed in other stem cell fate transitions and disease states.
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Affiliation(s)
- Trisha A. Macrae
- grid.266102.10000 0001 2297 6811Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA USA ,grid.266102.10000 0001 2297 6811Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA USA ,grid.266102.10000 0001 2297 6811Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA USA ,Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON Canada
| | - Miguel Ramalho-Santos
- grid.266102.10000 0001 2297 6811Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA USA ,grid.266102.10000 0001 2297 6811Center for Reproductive Sciences, University of California, San Francisco, San Francisco, CA USA ,Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Molecular Genetics, University of Toronto, Toronto, ON Canada
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3
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Whitman JD, Hiatt J, Mowery CT, Shy BR, Yu R, Yamamoto TN, Rathore U, Goldgof GM, Whitty C, Woo JM, Gallman AE, Miller TE, Levine AG, Nguyen DN, Bapat SP, Balcerek J, Bylsma SA, Lyons AM, Li S, Wong AWY, Gillis-Buck EM, Steinhart ZB, Lee Y, Apathy R, Lipke MJ, Smith JA, Zheng T, Boothby IC, Isaza E, Chan J, Acenas DD, Lee J, Macrae TA, Kyaw TS, Wu D, Ng DL, Gu W, York VA, Eskandarian HA, Callaway PC, Warrier L, Moreno ME, Levan J, Torres L, Farrington LA, Loudermilk RP, Koshal K, Zorn KC, Garcia-Beltran WF, Yang D, Astudillo MG, Bernstein BE, Gelfand JA, Ryan ET, Charles RC, Iafrate AJ, Lennerz JK, Miller S, Chiu CY, Stramer SL, Wilson MR, Manglik A, Ye CJ, Krogan NJ, Anderson MS, Cyster JG, Ernst JD, Wu AHB, Lynch KL, Bern C, Hsu PD, Marson A. Evaluation of SARS-CoV-2 serology assays reveals a range of test performance. Nat Biotechnol 2020; 38:1174-1183. [PMID: 32855547 PMCID: PMC7740072 DOI: 10.1038/s41587-020-0659-0] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/29/2020] [Indexed: 12/18/2022]
Abstract
Appropriate use and interpretation of serological tests for assessments of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exposure, infection and potential immunity require accurate data on assay performance. We conducted a head-to-head evaluation of ten point-of-care-style lateral flow assays (LFAs) and two laboratory-based enzyme-linked immunosorbent assays to detect anti-SARS-CoV-2 IgM and IgG antibodies in 5-d time intervals from symptom onset and studied the specificity of each assay in pre-coronavirus disease 2019 specimens. The percent of seropositive individuals increased with time, peaking in the latest time interval tested (>20 d after symptom onset). Test specificity ranged from 84.3% to 100.0% and was predominantly affected by variability in IgM results. LFA specificity could be increased by considering weak bands as negative, but this decreased detection of antibodies (sensitivity) in a subset of SARS-CoV-2 real-time PCR-positive cases. Our results underline the importance of seropositivity threshold determination and reader training for reliable LFA deployment. Although there was no standout serological assay, four tests achieved more than 80% positivity at later time points tested and more than 95% specificity.
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Affiliation(s)
- Jeffrey D Whitman
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Joseph Hiatt
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA, USA
- J. David Gladstone Institutes, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Cody T Mowery
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Brian R Shy
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Ruby Yu
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Tori N Yamamoto
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Ujjwal Rathore
- J. David Gladstone Institutes, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Gregory M Goldgof
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Caroline Whitty
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Jonathan M Woo
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Antonia E Gallman
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, USA
| | - Tyler E Miller
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Andrew G Levine
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - David N Nguyen
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, San Francisco, CA, USA
| | - Sagar P Bapat
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Joanna Balcerek
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Sophia A Bylsma
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
| | - Ana M Lyons
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Stacy Li
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Allison Wai-Yi Wong
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
| | - Eva Mae Gillis-Buck
- Department of Surgery, University of California, San Francisco, San Francisco, CA, USA
| | - Zachary B Steinhart
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Youjin Lee
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Ryan Apathy
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Mitchell J Lipke
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Jennifer Anne Smith
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Tina Zheng
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA, USA
- Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA
| | - Ian C Boothby
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Department of Dermatology, University of California, San Francisco, San Francisco, CA, USA
| | - Erin Isaza
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Program in Quantitative Biology, University of California, San Francisco, San Francisco, CA, USA
| | - Jackie Chan
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Dante D Acenas
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - Jinwoo Lee
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Trisha A Macrae
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Than S Kyaw
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
| | - David Wu
- Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA, USA
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA, USA
| | - Dianna L Ng
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Wei Gu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Vanessa A York
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Haig Alexander Eskandarian
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Perri C Callaway
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- Infectious Diseases and Immunity Graduate Group, University of California, Berkeley, Berkeley, CA, USA
| | - Lakshmi Warrier
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Mary E Moreno
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Justine Levan
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Leonel Torres
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Lila A Farrington
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Rita P Loudermilk
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - Kanishka Koshal
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - Kelsey C Zorn
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA
| | | | - Diane Yang
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Michael G Astudillo
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Bradley E Bernstein
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Jeffrey A Gelfand
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Edward T Ryan
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Richelle C Charles
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - A John Iafrate
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Jochen K Lennerz
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Steve Miller
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Charles Y Chiu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
- Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, San Francisco, CA, USA
- UCSF-Abbott Viral Diagnostics and Discovery Center, San Francisco, CA, USA
| | - Susan L Stramer
- Scientific Affairs, American Red Cross, Gaithersburg, MD, USA
| | - Michael R Wilson
- Biomedical Sciences Graduate Program, University of California, San Francisco, San Francisco, CA, USA
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA, USA
| | - Aashish Manglik
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, San Francisco, CA, USA
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, USA
| | - Chun Jimmie Ye
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA
- Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
- Institute of Computational Health Sciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Nevan J Krogan
- J. David Gladstone Institutes, San Francisco, CA, USA
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, USA
- Quantitative Biosciences Institute, University of California, San Francisco, San Francisco, CA, USA
| | - Mark S Anderson
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA
| | - Jason G Cyster
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, USA
| | - Joel D Ernst
- Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Alan H B Wu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Kara L Lynch
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Caryn Bern
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA.
| | - Patrick D Hsu
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA.
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA.
- Center for Computational Biology, University of California, Berkeley, Berkeley, CA, USA.
| | - Alexander Marson
- J. David Gladstone Institutes, San Francisco, CA, USA.
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA, USA.
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, USA.
- Diabetes Center, University of California, San Francisco, San Francisco, CA, USA.
- Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, San Francisco, CA, USA.
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA.
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
- Chan Zuckerberg Biohub, San Francisco, CA, USA.
- Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA.
- Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA.
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4
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Whitman JD, Hiatt J, Mowery CT, Shy BR, Yu R, Yamamoto TN, Rathore U, Goldgof GM, Whitty C, Woo JM, Gallman AE, Miller TE, Levine AG, Nguyen DN, Bapat SP, Balcerek J, Bylsma SA, Lyons AM, Li S, Wong AWY, Gillis-Buck EM, Steinhart ZB, Lee Y, Apathy R, Lipke MJ, Smith JA, Zheng T, Boothby IC, Isaza E, Chan J, Acenas DD, Lee J, Macrae TA, Kyaw TS, Wu D, Ng DL, Gu W, York VA, Eskandarian HA, Callaway PC, Warrier L, Moreno ME, Levan J, Torres L, Farrington LA, Loudermilk R, Koshal K, Zorn KC, Garcia-Beltran WF, Yang D, Astudillo MG, Bernstein BE, Gelfand JA, Ryan ET, Charles RC, Iafrate AJ, Lennerz JK, Miller S, Chiu CY, Stramer SL, Wilson MR, Manglik A, Ye CJ, Krogan NJ, Anderson MS, Cyster JG, Ernst JD, Wu AHB, Lynch KL, Bern C, Hsu PD, Marson A. Test performance evaluation of SARS-CoV-2 serological assays. medRxiv 2020. [PMID: 32511497 PMCID: PMC7273265 DOI: 10.1101/2020.04.25.20074856] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background: Serological tests are crucial tools for assessments of SARS-CoV-2 exposure, infection and potential immunity. Their appropriate use and interpretation require accurate assay performance data. Method: We conducted an evaluation of 10 lateral flow assays (LFAs) and two ELISAs to detect anti-SARS-CoV-2 antibodies. The specimen set comprised 128 plasma or serum samples from 79 symptomatic SARS-CoV-2 RT-PCR-positive individuals; 108 pre-COVID-19 negative controls; and 52 recent samples from individuals who underwent respiratory viral testing but were not diagnosed with Coronavirus Disease 2019 (COVID-19). Samples were blinded and LFA results were interpreted by two independent readers, using a standardized intensity scoring system. Results: Among specimens from SARS-CoV-2 RT-PCR-positive individuals, the percent seropositive increased with time interval, peaking at 81.8–100.0% in samples taken >20 days after symptom onset. Test specificity ranged from 84.3–100.0% in pre-COVID-19 specimens. Specificity was higher when weak LFA bands were considered negative, but this decreased sensitivity. IgM detection was more variable than IgG, and detection was highest when IgM and IgG results were combined. Agreement between ELISAs and LFAs ranged from 75.7–94.8%. No consistent cross-reactivity was observed. Conclusion: Our evaluation showed heterogeneous assay performance. Reader training is key to reliable LFA performance, and can be tailored for survey goals. Informed use of serology will require evaluations covering the full spectrum of SARS-CoV-2 infections, from asymptomatic and mild infection to severe disease, and later convalescence. Well-designed studies to elucidate the mechanisms and serological correlates of protective immunity will be crucial to guide rational clinical and public health policies.
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Affiliation(s)
- Jeffrey D Whitman
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Joseph Hiatt
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Biomedical Sciences Graduate Program, University of California, San Francisco, CA 94143, USA.,J. David Gladstone Institutes, San Francisco, CA 94158, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Cody T Mowery
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Biomedical Sciences Graduate Program, University of California, San Francisco, CA 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Brian R Shy
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ruby Yu
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tori N Yamamoto
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ujjwal Rathore
- J. David Gladstone Institutes, San Francisco, CA 94158, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Gregory M Goldgof
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Caroline Whitty
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jonathan M Woo
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Antonia E Gallman
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Howard Hughes Medical Institute, University of California, San Francisco
| | - Tyler E Miller
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Andrew G Levine
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - David N Nguyen
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Sagar P Bapat
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Joanna Balcerek
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Sophia A Bylsma
- Department of Bioengineering, University of California, Berkeley, Berkeley CA 94720 USA
| | - Ana M Lyons
- Department of Integrative Biology, University of California, Berkeley, Berkeley CA 94720 USA
| | - Stacy Li
- Department of Integrative Biology, University of California, Berkeley, Berkeley CA 94720 USA
| | - Allison Wai-Yi Wong
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA
| | - Eva Mae Gillis-Buck
- Department of Surgery, University of California, San Francisco, CA 94143, USA
| | - Zachary B Steinhart
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Youjin Lee
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA
| | - Ryan Apathy
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Mitchell J Lipke
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jennifer Anne Smith
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Tina Zheng
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Biomedical Sciences Graduate Program, University of California, San Francisco, CA 94143, USA.,Department of Neurology, University of California, San Francisco, CA 94158, USA.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ian C Boothby
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Department of Dermatology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Erin Isaza
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Program in Quantitative Biology, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Jackie Chan
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA
| | - Dante D Acenas
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA
| | - Jinwoo Lee
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,School of Medicine, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Trisha A Macrae
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,School of Medicine, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Than S Kyaw
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA
| | - David Wu
- Medical Scientist Training Program, University of California, San Francisco, CA 94143, USA.,Biomedical Sciences Graduate Program, University of California, San Francisco, CA 94143, USA
| | - Dianna L Ng
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA.,Department of Pathology, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Wei Gu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Vanessa A York
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Haig Alexander Eskandarian
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Perri C Callaway
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA.,Infectious Diseases and Immunity Graduate Group, University of California Berkeley, Berkeley, CA, USA
| | - Lakshmi Warrier
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Mary E Moreno
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Justine Levan
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Leonel Torres
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Lila A Farrington
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Rita Loudermilk
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA
| | - Kanishka Koshal
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA
| | - Kelsey C Zorn
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA
| | | | - Diane Yang
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Michael G Astudillo
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Bradley E Bernstein
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Jeffrey A Gelfand
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Edward T Ryan
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Richelle C Charles
- Division of Infectious Diseases, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - A John Iafrate
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Jochen K Lennerz
- Department of Pathology, Massachusetts General Hospital/Harvard Medical School, Boston, MA, USA
| | - Steve Miller
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Charles Y Chiu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Medicine, Division of Infectious Diseases, University of California, San Francisco, San Francisco, CA 94143, USA.,UCSF-Abbott Viral Diagnostics and Discovery Center, San Francisco, CA, USA
| | | | - Michael R Wilson
- Biomedical Sciences Graduate Program, University of California, San Francisco, CA 94143, USA.,Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, CA
| | - Aashish Manglik
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94158
| | - Chun Jimmie Ye
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.,Chan Zuckerberg Biohub, San Francisco, CA, USA.,Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA.,Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA.,Institute of Computational Health Sciences, University of California, San Francisco, San Francisco, CA, USA.,Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Nevan J Krogan
- J. David Gladstone Institutes, San Francisco, CA 94158, USA.,Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158, USA.,Quantitative Biosciences Institute, University of California, San Francisco, CA 94158, USA
| | - Mark S Anderson
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jason G Cyster
- Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Howard Hughes Medical Institute, University of California, San Francisco
| | - Joel D Ernst
- Division of Experimental Medicine, Department of Medicine, University of California San Francisco, San Francisco CA, USA
| | - Alan H B Wu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kara L Lynch
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Caryn Bern
- Department of Epidemiology and Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | - Patrick D Hsu
- Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Department of Bioengineering, University of California, Berkeley, Berkeley CA 94720 USA
| | - Alexander Marson
- J. David Gladstone Institutes, San Francisco, CA 94158, USA.,Department of Microbiology and Immunology, University of California, San Francisco, CA 94143, USA.,Innovative Genomics Institute, University of California, Berkeley, CA 94720, USA.,Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA.,Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.,Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94158, USA.,Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.,Chan Zuckerberg Biohub, San Francisco, CA, USA.,Institute for Human Genetics, University of California, San Francisco, San Francisco, CA, USA
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5
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Bulut-Karslioglu A, Macrae TA, Oses-Prieto JA, Covarrubias S, Percharde M, Ku G, Diaz A, McManus MT, Burlingame AL, Ramalho-Santos M. The Transcriptionally Permissive Chromatin State of Embryonic Stem Cells Is Acutely Tuned to Translational Output. Cell Stem Cell 2018; 22:369-383.e8. [PMID: 29499153 PMCID: PMC5836508 DOI: 10.1016/j.stem.2018.02.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 12/20/2017] [Accepted: 02/07/2018] [Indexed: 10/17/2022]
Abstract
A permissive chromatin environment coupled to hypertranscription drives the rapid proliferation of embryonic stem cells (ESCs) and peri-implantation embryos. We carried out a genome-wide screen to systematically dissect the regulation of the euchromatic state of ESCs. The results revealed that cellular growth pathways, most prominently translation, perpetuate the euchromatic state and hypertranscription of ESCs. Acute inhibition of translation rapidly depletes euchromatic marks in mouse ESCs and blastocysts, concurrent with delocalization of RNA polymerase II and reduction in nascent transcription. Translation inhibition promotes rewiring of chromatin accessibility, which decreases at a subset of active developmental enhancers and increases at histone genes and transposable elements. Proteome-scale analyses revealed that several euchromatin regulators are unstable proteins and continuously depend on a high translational output. We propose that this mechanistic interdependence of euchromatin, transcription, and translation sets the pace of proliferation at peri-implantation and may be employed by other stem/progenitor cells.
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Affiliation(s)
- Aydan Bulut-Karslioglu
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Trisha A Macrae
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Juan A Oses-Prieto
- Department of Pharmaceutical Chemistry, Mass Spectrometry Facility, School of Pharmacy, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Sergio Covarrubias
- UCSF Diabetes Center, WM Keck Center for Noncoding RNAs, Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michelle Percharde
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Gregory Ku
- UCSF Diabetes Center, WM Keck Center for Noncoding RNAs, Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Aaron Diaz
- Department of Neurological Surgery, Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Michael T McManus
- UCSF Diabetes Center, WM Keck Center for Noncoding RNAs, Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Alma L Burlingame
- Department of Pharmaceutical Chemistry, Mass Spectrometry Facility, School of Pharmacy, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Miguel Ramalho-Santos
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA.
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6
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Bulut-Karslioglu A, Biechele S, Jin H, Macrae TA, Hejna M, Gertsenstein M, Song JS, Ramalho-Santos M. Inhibition of mTOR induces a paused pluripotent state. Nature 2016; 540:119-123. [PMID: 27880763 PMCID: PMC5143278 DOI: 10.1038/nature20578] [Citation(s) in RCA: 153] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 11/01/2016] [Indexed: 01/12/2023]
Abstract
Cultured pluripotent stem cells are a cornerstone of regenerative medicine owing to their ability to give rise to all cell types of the body. Although pluripotent stem cells can be propagated indefinitely in vitro, pluripotency is paradoxically a transient state in vivo, lasting 2-3 days around the time of blastocyst implantation. The exception to this rule is embryonic diapause, a reversible state of suspended development triggered by unfavourable conditions. Diapause is a physiological reproductive strategy widely employed across the animal kingdom, including in mammals, but its regulation remains poorly understood. Here we report that the partial inhibition of mechanistic target of rapamycin (mTOR), a major nutrient sensor and promoter of growth, induces reversible pausing of mouse blastocyst development and allows their prolonged culture ex vivo. Paused blastocysts remain pluripotent and competent-able to give rise to embryonic stem (ES) cells and live, fertile mice. We show that both naturally diapaused blastocysts in vivo and paused blastocysts ex vivo display pronounced reductions in mTOR activity, translation, histone modifications associated with gene activity and transcription. Pausing can be induced directly in cultured ES cells and sustained for weeks without appreciable cell death or deviations from cell cycle distributions. We show that paused ES cells display a remarkable global suppression of transcription, maintain a gene expression signature of diapaused blastocysts and remain pluripotent. These results uncover a new pluripotent stem cell state corresponding to the epiblast of the diapaused blastocyst and indicate that mTOR regulates developmental timing at the peri-implantation stage. Our findings have implications in the fields of assisted reproduction, regenerative medicine, cancer, metabolic disorders and ageing.
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Affiliation(s)
- Aydan Bulut-Karslioglu
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, California 94143, USA
| | - Steffen Biechele
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, California 94143, USA
| | - Hu Jin
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA.,Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Trisha A Macrae
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, California 94143, USA
| | - Miroslav Hejna
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA.,Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
| | | | - Jun S Song
- Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA.,Departments of Bioengineering and Physics, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Miguel Ramalho-Santos
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences and Diabetes Center, University of California, San Francisco, San Francisco, California 94143, USA
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