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Schaenman J, Rossetti M, Pickering H, Sunga G, Wilhalme H, Elashoff D, Zhang Q, Hickey M, Reddy U, Danovitch G, Reed EF, Bunnapradist S. Preservation of Antiviral Immunologic Efficacy Without Alloimmunity After Switch to Belatacept in Calcineurin Inhibitor-Intolerant Patients. Kidney Int Rep 2022; 8:126-140. [PMID: 36644348 PMCID: PMC9832066 DOI: 10.1016/j.ekir.2022.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 06/08/2022] [Revised: 09/18/2022] [Accepted: 10/10/2022] [Indexed: 11/09/2022] Open
Abstract
Introduction Belatacept has shown potential for prevention of rejection after kidney transplantation, given its demonstration of reduced nephrotoxicity in combination with absence of significant incidence of rejection. However, concerns have been raised regarding increased risk of viral infection. Methods We set out to explore the impact of the switch to belatacept on alloimmune and antiviral immunity through the study of patients switched from calcineurin inhibitor (CNI) to belatacept within 3 months of kidney transplantation compared with a matched cohort of control patients on a CNI-based regimen. Results After the switch to belatacept, immune phenotyping demonstrated a decrease in naive and an increase in terminally differentiated effector memory (TMRA) T cells, with no significant difference compared with control patients. Donor-specific immune response, measured by intracellular cytokine staining (ICS), did not change significantly either by single or double cytokine secretion, but it was associated with the appearance of donor-specific antibody (DSA) in the control but not the belatacept cohort (P = 0.039 for naive and P = 0.002 for TMRA subtypes). Increased incidence of de novo DSA development was observed in the control group (P = 0.035). Virus-specific immune response, as measured by ICS in response to cytomegalovirus (CMV) or Epstein-Barr virus (EBV), was similar in both groups and stable over time. Conclusion We found that belatacept use was associated with an absence of alloreactivity without impact on immune phenotype, while preserving the antiviral immune response, for patients switched from a CNI-based regimen. In parallel, the antiviral immune response against CMV and EBV was preserved after the belatacept switch (clinicaltrials.gov: NCT01953120).
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Affiliation(s)
- Joanna Schaenman
- Division of Infectious Disease, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Maura Rossetti
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Harry Pickering
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Gemalene Sunga
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Holly Wilhalme
- Department of Medicine Biostatistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - David Elashoff
- Department of Medicine Biostatistics Core, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Qiuheng Zhang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Michelle Hickey
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Uttam Reddy
- Division of Kidney Transplantation, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Gabriel Danovitch
- Division of Kidney Transplantation, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Elaine F. Reed
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Suphamai Bunnapradist
- Division of Kidney Transplantation, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA,Correspondence: Suuphamai Bunnapradist, 200 UCLA Medical Plaza, Suite 565, Los Angeles, CA 90095, USA.
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Pickering H, Schaenman J, Rossetti M, Ahn R, Sunga G, Liang EC, Bunnapradist S, Reed EF. Corrigendum to "T cell senescence and impaired CMV-specific response are associated with infection risk in kidney transplant recipients" [Hum. Immunol. 83(4) (2022) 273-280]. Hum Immunol 2022; 83:857. [PMID: 36192241 DOI: 10.1016/j.humimm.2022.09.001] [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: 11/30/2022]
Affiliation(s)
| | | | | | - Richard Ahn
- Quantitative and Computational Biosciences, USA
| | | | | | - Suphamai Bunnapradist
- Division of Nephrology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Elaine F Reed
- Department of Pathology and Laboratory Medicine, USA
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3
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Pickering H, Schaenman J, Rossetti M, Ahn R, Sunga G, Liang EC, Bunnapradist S, Reed EF. T cell senescence and impaired CMV-specific response are associated with infection risk in kidney transplant recipients. Hum Immunol 2022; 83:273-280. [DOI: 10.1016/j.humimm.2022.01.016] [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] [Received: 09/21/2021] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 02/04/2023]
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4
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Pickering H, Sen S, Arakawa-Hoyt J, Ishiyama K, Sun Y, Parmar R, Ahn RS, Sunga G, Llamas M, Hoffmann A, Deng M, Bunnapradist S, Schaenman JM, Gjertson DW, Rossetti M, Lanier LL, Reed EF. NK and CD8+ T cell phenotypes predict onset and control of CMV viremia after kidney transplant. JCI Insight 2021; 6:153175. [PMID: 34609965 PMCID: PMC8663544 DOI: 10.1172/jci.insight.153175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/14/2021] [Accepted: 09/29/2021] [Indexed: 01/08/2023] Open
Abstract
CMV causes mostly asymptomatic but lifelong infection. Primary infection or reactivation in immunocompromised individuals can be life-threatening. CMV viremia often occurs in solid organ transplant recipients and associates with decreased graft survival and higher mortality. Furthering understanding of impaired immunity that allows CMV reactivation is critical to guiding antiviral therapy and examining the effect of CMV on solid organ transplant outcomes. This study characterized longitudinal immune responses to CMV in 31 kidney transplant recipients with CMV viremia and matched, nonviremic recipients. Recipients were sampled 3 and 12 months after transplant, with additional samples 1 week and 1 month after viremia. PBMCs were stained for NK and T cell markers. PBMC transcriptomes were characterized by RNA-Seq. Plasma proteins were quantified by Luminex. CD8+ T cell transcriptomes were characterized by single-cell RNA-Seq. Before viremia, patients had high levels of IL-15 with concurrent expansion of immature CD56bright NK cells. After viremia, mature CD56dim NK cells and CD28–CD8+ T cells upregulating inhibitory and NK-associated receptors were expanded. Memory NK cells and NK-like CD28–CD8+ T cells were associated with control of viremia. These findings suggest that signatures of innate activation may be prognostic for CMV reactivation after transplant, while CD8+ T cell functionality is critical for effective control of CMV.
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Affiliation(s)
- Harry Pickering
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Subha Sen
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Janice Arakawa-Hoyt
- Department of Microbiology and Immunology, Parker Institute for Cancer Immunotherapy, University of California, San Francisco, San Francisco, California, USA
| | - Kenichi Ishiyama
- Department of Microbiology and Immunology, Parker Institute for Cancer Immunotherapy, University of California, San Francisco, San Francisco, California, USA
| | - Yumeng Sun
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Rajesh Parmar
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Richard S Ahn
- Microbiology, Immunology, and Molecular Genetics.,Institute for Quantitative and Computational Biosciences, and
| | - Gemalene Sunga
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Megan Llamas
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Alexander Hoffmann
- Institute for Quantitative and Computational Biosciences, and.,Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Mario Deng
- Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Suphamai Bunnapradist
- Division of Nephrology, David Geffen School of Medicine, Los Angeles, California, USA
| | - Joanna M Schaenman
- Division of Infectious Diseases, Department of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - David W Gjertson
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA.,Biostatistics, University of California, Los Angeles, Los Angeles, California, USA
| | - Maura Rossetti
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Lewis L Lanier
- Department of Microbiology and Immunology, Parker Institute for Cancer Immunotherapy, University of California, San Francisco, San Francisco, California, USA
| | - Elaine F Reed
- Department of Pathology and Laboratory Medicine, University of California, Los Angeles, Los Angeles, California, USA
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Cummings AL, Gukasyan J, Lu HY, Grogan T, Sunga G, Fares CM, Hornstein N, Zaretsky J, Carroll J, Bachrach B, Akingbemi WO, Li D, Noor Z, Lisberg A, Goldman JW, Elashoff D, Bui AAT, Ribas A, Dubinett SM, Rossetti M, Garon EB. Mutational landscape influences immunotherapy outcomes among patients with non-small-cell lung cancer with human leukocyte antigen supertype B44. ACTA ACUST UNITED AC 2020; 1:1167-1175. [DOI: 10.1038/s43018-020-00140-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 10/06/2020] [Indexed: 12/30/2022]
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Griffiths JI, Wallet P, Pflieger LT, Stenehjem D, Liu X, Cosgrove PA, Leggett NA, McQuerry JA, Shrestha G, Rossetti M, Sunga G, Moos PJ, Adler FR, Chang JT, Sharma S, Bild AH. Circulating immune cell phenotype dynamics reflect the strength of tumor-immune cell interactions in patients during immunotherapy. Proc Natl Acad Sci U S A 2020; 117:16072-16082. [PMID: 32571915 PMCID: PMC7355015 DOI: 10.1073/pnas.1918937117] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [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] [Indexed: 12/12/2022] Open
Abstract
The extent to which immune cell phenotypes in the peripheral blood reflect within-tumor immune activity prior to and early in cancer therapy is unclear. To address this question, we studied the population dynamics of tumor and immune cells, and immune phenotypic changes, using clinical tumor and immune cell measurements and single-cell genomic analyses. These samples were serially obtained from a cohort of advanced gastrointestinal cancer patients enrolled in a trial with chemotherapy and immunotherapy. Using an ecological population model, fitted to clinical tumor burden and immune cell abundance data from each patient, we find evidence of a strong tumor-circulating immune cell interaction in responder patients but not in those patients that progress on treatment. Upon initiation of therapy, immune cell abundance increased rapidly in responsive patients, and once the peak level is reached tumor burden decreases, similar to models of predator-prey interactions; these dynamic patterns were absent in nonresponder patients. To interrogate phenotype dynamics of circulating immune cells, we performed single-cell RNA sequencing at serial time points during treatment. These data show that peripheral immune cell phenotypes were linked to the increased strength of patients' tumor-immune cell interaction, including increased cytotoxic differentiation and strong activation of interferon signaling in peripheral T cells in responder patients. Joint modeling of clinical and genomic data highlights the interactions between tumor and immune cell populations and reveals how variation in patient responsiveness can be explained by differences in peripheral immune cell signaling and differentiation soon after the initiation of immunotherapy.
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Affiliation(s)
- Jason I Griffiths
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010
- Department of Mathematics, University of Utah, Salt Lake City, UT 84112
| | - Pierre Wallet
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010
| | - Lance T Pflieger
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010
| | - David Stenehjem
- College of Pharmacy, University of Minnesota, Duluth, MN 55812
| | - Xuan Liu
- Department of Integrative Biology and Pharmacology, School of Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Patrick A Cosgrove
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010
| | - Neena A Leggett
- Department of Integrative Biology and Pharmacology, School of Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Jasmine A McQuerry
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010
- Department of Oncological Sciences, School of Medicine, University of Utah, Salt Lake City, UT 84112
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112
| | - Gajendra Shrestha
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112
| | - Maura Rossetti
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095
| | - Gemalene Sunga
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095
| | - Philip J Moos
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT 84112
| | - Frederick R Adler
- Department of Mathematics, University of Utah, Salt Lake City, UT 84112
| | - Jeffrey T Chang
- Department of Integrative Biology and Pharmacology, School of Medicine, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX 77030
| | - Sunil Sharma
- Translational Oncology Research & Drug Discovery, Translational Genomics Research Institute, Phoenix, AZ 85004
| | - Andrea H Bild
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010;
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Liang E, Rossetti M, Sunga G, Reed E, Schaenman J. 638. CMV-Specific T-Cell Immune Responses in Older vs. Younger Kidney Transplant Recipients. Open Forum Infect Dis 2018. [PMCID: PMC6255658 DOI: 10.1093/ofid/ofy210.645] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Compared with younger patients on similar immunosuppression regimens, older solid-organ transplant recipients experience increased rates of infection and death, but decreased rates of rejection. The mechanism behind these differences has yet to be defined, but may be related to ÒinflammagingÓ driven by CMV infection. The objective of this study was to evaluate older vs. younger solid-organ transplant recipients for CMV-specific T-cell immune responses. Methods Peripheral blood mononuclear cells were isolated from 20 older (3 age 60) and 25 matched younger (ages 30–59) kidney transplant recipients at 3 months after transplantation. Eight recipients were high risk by CMV serology (D+/R−) and 37 were intermediate risk (D−/R+). Overlapping CMV peptide pools were used for stimulation. Intracellular staining to determine cytokine stimulation was performed by multiparameter flow cytometry. Statistical analysis was performed using Jmp Pro 11 software. Results There was no association between patient age and CMV risk status (P = 0.728). There was no difference between older and younger kidney transplant recipients in release of IFNγ, TNFα, or IL-2 from CD4+ or CD8+ T cells in response to CMV antigen stimulation. However, Older recipients had similar frequencies of CD8+ naive cells but decreased frequency of CD8+ terminally differentiated effector memory CD45RA+ (TEMRA) T cells releasing both IFNg and TNFa (P = 0.037) (figure). Interestingly, development of CMV viremia was associated with a weaker CMV-specific immune response: Patients who had a history of CMV viremia had a decreased frequency of CD8+ TEMRA cells releasing both IFNγ and TNFα (P = 0.041). Conclusion Older kidney transplant recipients demonstrated a decreased frequency of CMV-specific polyfunctional CD8+ TEMRA T cells. This impaired memory T-cell response to CMV suggests a possible mechanism for the increased vulnerability of older recipients to CMV infection or reactivation, which may in turn worsen age-related immune dysfunction. Furthermore, patients with subsequent CMV viremia had a decreased frequency of CMV-specific polyfunctional CD8+ TEMRA T cells. This finding may explain patient vulnerability to CMV viremia despite modern protocols for antiviral prophylaxis. ![]()
Disclosures All authors: No reported disclosures.
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Affiliation(s)
- Emily Liang
- David Geffen School of Medicine, Los Angeles, California
| | - Maura Rossetti
- David Geffen School of Medicine at UCLA, Department of Pathology, Los Angeles, California
| | - Gemalene Sunga
- David Geffen School of Medicine at UCLA, Department of Pathology, Los Angeles, California
| | - Elaine Reed
- David Geffen School of Medicine at UCLA, Department of Pathology, Los Angeles, California
| | - Joanna Schaenman
- Division of Infectious Diseases, University of California, Los Angeles, Los Angeles, California
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Schaenman JM, Rossetti M, Sidwell T, Groysberg V, Sunga G, Liang E, Vangala S, Chang E, Bakir M, Bondar G, Cadeiras M, Kwon M, Reed EF, Deng M. Association of pro-inflammatory cytokines and monocyte subtypes in older and younger patients on clinical outcomes after mechanical circulatory support device implantation. Hum Immunol 2018; 80:126-134. [PMID: 30445099 DOI: 10.1016/j.humimm.2018.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 05/04/2018] [Revised: 10/29/2018] [Accepted: 11/07/2018] [Indexed: 01/30/2023]
Abstract
Noninvasive immunologic analysis of peripheral blood holds promise for explaining the mechanism of development of adverse clinical outcomes, and may also become a method for patient risk stratification before or after mechanical circulatory support device (MCSD) implantation. Dysregulation of the innate immune system is associated with increased patient age but has yet to be evaluated in the older patient with advanced heart failure undergoing MCSD surgery. Patients pre- and post-MCSD implantation had peripheral blood mononuclear cells (PBMC) and serum isolated. Multiparameter flow cytometry was used to analyze markers of innate cell function, including monocyte subtypes. Multiplex cytokine analysis was performed. MELD-XI and SOFA scores were utilized as surrogate markers of outcomes. Increased levels of pro-inflammatory cytokines including IL-15, TNF-α, and IL-10 were associated with increased MELD-XI and SOFA scores. IL-8, TNF- α, and IL-10 were associated with risk of death after MCSD implantation, even with correction for patient age. Increased frequency of 'classical' monocytes (CD14 + CD16-) were associated with increased MELD-XI and SOFA scores. This suggests that inflammation and innate immune system activation contribute to progression to multiorgan system failure and death after MCSD surgery. Development of noninvasive monitoring of peripheral blood holds promise for biomarker development for candidate selection and patient risk stratification.
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Affiliation(s)
- Joanna M Schaenman
- Division of Infectious Diseases, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States.
| | - Maura Rossetti
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Tiffany Sidwell
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Victoria Groysberg
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Gemalene Sunga
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Emily Liang
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Sitaram Vangala
- UCLA Department of Medicine Statistics Core, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Eleanor Chang
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Maral Bakir
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Galyna Bondar
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Martin Cadeiras
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Murray Kwon
- Department of Cardiothoracic Surgery, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Elaine F Reed
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
| | - Mario Deng
- Division of Cardiology, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA 90095, United States
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Butler CL, Hickey MJ, Gjertson DW, Pearl M, Rossetti M, Cecka JM, Kandarian F, Sunga G, Zhang Q, Ray BL, Reed EF. OR13 Identification and characterization of a panel of non–HLA antibodies in kidney allograft rejection. Hum Immunol 2018. [DOI: 10.1016/j.humimm.2018.07.018] [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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10
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Rossetti M, Fitzpatrick C, Harre N, Zheng Y, Mercer N, Sunga G, Gjertson D, Reed E. Identification of Plasma Protein Biomarkers of Acute Renal Allograft Rejection. Transplantation 2018. [DOI: 10.1097/01.tp.0000543634.09428.ac] [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: 11/25/2022]
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11
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Schaenman J, Rossetti M, Sidwell T, Groysberg V, Sunga G, Liang E, Vangala S, Chang E, Bakir M, Bondar G, Cadeiras M, Kwon M, Reed E, Deng M. Frequency of Monocyte Subtypes and TLR4 Expression Correlate with Clinical Outcomes After Mechanical Circulatory Device Implantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.522] [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] Open
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Butler C, Zhang Q, Jiang N, Pearl M, Rossetti M, Sunga G, Kandaian F, Ray BL, Reed EF. OR18 Identification of anti-endothelial non–HLA antibodies in kidney allograft rejection. Hum Immunol 2017. [DOI: 10.1016/j.humimm.2017.06.024] [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: 11/15/2022]
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13
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Gunawardana G, Rasmussen RR, Scherr M, Frost D, Brandt KD, Choi W, Jackson M, Karwowski JP, Sunga G, Malmberg LH, West P, Chen RH, Kadam S, Clement JJ, McAlpine JB. Corynecandin: a novel antifungal glycolipid from Coryneum modonium. J Antibiot (Tokyo) 1997; 50:884-6. [PMID: 9402997 DOI: 10.7164/antibiotics.50.884] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- G Gunawardana
- Pharmaceutical Products Division, Abbott Laboratories, Abbott Park, IL 60064-3500, USA
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Karwowski JP, Jackson M, Sunga G, Sheldon P, Poddig JB, Kohl WL, Kadam S. Dorrigocins: novel antifungal antibiotics that change the morphology of ras-transformed NIH/3T3 cells to that of normal cells. I. Taxonomy of the producing organism, fermentation and biological activity. J Antibiot (Tokyo) 1994; 47:862-9. [PMID: 7928671 DOI: 10.7164/antibiotics.47.862] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The dorrigocins are new secondary metabolites produced by submerged fermentation of a streptomycete which was isolated from a soil sample collected in Australia. The dorrigocins show moderate antifungal activity and reverse the morphology of ras-transformed NIH/3T3 cells from a transformed phenotype to a normal one. The producing culture was identified as Streptomyces platensis subsp. rosaceus strain AB1981F-75.
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