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Ward M, Carter LP, Huang JY, Maslyar D, Budda B, Paul R, Rosenthal A. Phase 1 study of latozinemab in progranulin-associated frontotemporal dementia. Alzheimers Dement (N Y) 2024; 10:e12452. [PMID: 38356474 PMCID: PMC10865485 DOI: 10.1002/trc2.12452] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 12/21/2023] [Accepted: 12/30/2023] [Indexed: 02/16/2024]
Abstract
INTRODUCTION Heterozygous mutations in the GRN gene lead to reduced progranulin (PGRN) levels in plasma and cerebrospinal fluid (CSF) and are causative of frontotemporal dementia (FTD) with > 90% penetrance. Latozinemab is a human monoclonal immunoglobulin G1 antibody that is being developed to increase PGRN levels in individuals with FTD caused by heterozygous loss-of-function GRN mutations. METHODS A first-in-human phase 1 study was conducted to evaluate the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of multiple-dose intravenous administration of latozinemab in eight symptomatic participants with FTD caused by a heterozygous loss-of-function GRN mutation (FTD-GRN). RESULTS Latozinemab demonstrated favorable safety and PK/PD profiles. Multiple-dose administration of latozinemab increased plasma and CSF PGRN levels in participants with FTD-GRN to levels that approximated those seen in healthy volunteers. DISCUSSION Data from the first-in-human phase 1 study support further development of latozinemab for the treatment of FTD-GRN. Highlights GRN mutations decrease progranulin (PGRN) and cause frontotemporal dementia (FTD).Latozinemab is being developed as a PGRN-elevating therapy.Latozinemab demonstrated a favorable safety profile in a phase 1 clinical trial.Latozinemab increased PGRN levels in the CNS of symptomatic FTD-GRN participants.
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Affiliation(s)
| | | | | | | | | | - Robert Paul
- Alector Inc.South San FranciscoCaliforniaUSA
- Present address:
Nine Square Therapeutics, Inc.South San FranciscoCalifornia94080USA
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Lütt A, Tsamitros N, Wolbers T, Rosenthal A, Bröcker AL, Schöneck R, Bermpohl F, Heinz A, Beck A, Gutwinski S. An explorative single-arm clinical study to assess craving in patients with alcohol use disorder using Virtual Reality exposure (CRAVE)-study protocol. BMC Psychiatry 2023; 23:839. [PMID: 37964300 PMCID: PMC10647047 DOI: 10.1186/s12888-023-05346-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 11/03/2023] [Indexed: 11/16/2023] Open
Abstract
BACKGROUND Alcohol use disorder (AUD) belongs to the most burdensome clinical disorders worldwide. Current treatment approaches yield unsatisfactory long-term effects with relapse rates up to 85%. Craving for alcohol is a major predictor for relapse and can be intentionally induced via cue exposure in real life as well as in Virtual Reality (VR). The induction and habituation of craving via conditioned cues as well as extinction learning is used in Cue Exposure Therapy (CET), a long-known but rarely used strategy in Cognitive Behavioral Therapy (CBT) of AUD. VR scenarios with alcohol related cues offer several advantages over real life scenarios and are within the focus of current efforts to develop new treatment options. As a first step, we aim to analyze if the VR scenarios elicit a transient change in craving levels and if this is measurable via subjective and psychophysiological parameters. METHODS A single-arm clinical study will be conducted including n = 60 patients with AUD. Data on severity of AUD and craving, comorbidities, demographics, side effects and the feeling of presence in VR will be assessed. Patients will use a head-mounted display (HMD) to immerse themselves into three different scenarios (neutral vs. two target situations: a living room and a bar) while heart rate, heart rate variability, pupillometry and electrodermal activity will be measured continuously. Subjective craving levels will be assessed before, during and after the VR session. DISCUSSION Results of this study will yield insight into the induction of alcohol craving in VR cue exposure paradigms and its measurement via subjective and psychophysiological parameters. This might be an important step in the development of innovative therapeutic approaches in the treatment of patients with AUD. TRIAL REGISTRATION This study was approved by the Charité-Universitätsmedizin Berlin Institutional Review Board (EA1/190/22, 23.05.2023). It was registered on ClinicalTrials.gov (NCT05861843).
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Affiliation(s)
- A Lütt
- Psychiatric University Hospital Charité at St. Hedwig Hospital, 10115, Berlin, Germany.
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany.
- Berlin Institute of Health at Charité, Universitätsmedizin Berlin, 10117, Berlin, Germany.
- German Center for Mental Health (DZPG), partner site Berlin, Berlin, Germany.
| | - N Tsamitros
- Psychiatric University Hospital Charité at St. Hedwig Hospital, 10115, Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
- Berlin Institute of Health at Charité, Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - T Wolbers
- German Center for Neurodegenerative Diseases (DZNE), 39120, Magdeburg, Germany
| | - A Rosenthal
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
| | - A L Bröcker
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
| | - R Schöneck
- Salus Clinic Lindow, 16835, Lindow, Germany
| | - F Bermpohl
- Psychiatric University Hospital Charité at St. Hedwig Hospital, 10115, Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
| | - A Heinz
- Psychiatric University Hospital Charité at St. Hedwig Hospital, 10115, Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
- German Center for Mental Health (DZPG), partner site Berlin, Berlin, Germany
| | - A Beck
- Faculty of Health, Health and Medical University, 14471, Potsdam, Germany
| | - S Gutwinski
- Psychiatric University Hospital Charité at St. Hedwig Hospital, 10115, Berlin, Germany
- Department of Psychiatry and Psychotherapy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Campus Charité Mitte, 10117, Berlin, Germany
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Boylan MA, Pincetic A, Romano G, Tatton N, Kenkare-Mitra S, Rosenthal A. Targeting Progranulin as an Immuno-Neurology Therapeutic Approach. Int J Mol Sci 2023; 24:15946. [PMID: 37958929 PMCID: PMC10647331 DOI: 10.3390/ijms242115946] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Immuno-neurology is an emerging therapeutic strategy for dementia and neurodegeneration designed to address immune surveillance failure in the brain. Microglia, as central nervous system (CNS)-resident myeloid cells, routinely perform surveillance of the brain and support neuronal function. Loss-of-function (LOF) mutations causing decreased levels of progranulin (PGRN), an immune regulatory protein, lead to dysfunctional microglia and are associated with multiple neurodegenerative diseases, including frontotemporal dementia caused by the progranulin gene (GRN) mutation (FTD-GRN), Alzheimer's disease (AD), Parkinson's disease (PD), limbic-predominant age-related transactivation response deoxyribonucleic acid binding protein 43 (TDP-43) encephalopathy (LATE), and amyotrophic lateral sclerosis (ALS). Immuno-neurology targets immune checkpoint-like proteins, offering the potential to convert aging and dysfunctional microglia into disease-fighting cells that counteract multiple disease pathologies, clear misfolded proteins and debris, promote myelin and synapse repair, optimize neuronal function, support astrocytes and oligodendrocytes, and maintain brain vasculature. Several clinical trials are underway to elevate PGRN levels as one strategy to modulate the function of microglia and counteract neurodegenerative changes associated with various disease states. If successful, these and other immuno-neurology drugs have the potential to revolutionize the treatment of neurodegenerative disorders by harnessing the brain's immune system and shifting it from an inflammatory/pathological state to an enhanced physiological/homeostatic state.
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Affiliation(s)
| | | | | | | | | | - Arnon Rosenthal
- Alector, Inc., 131 Oyster Point Blvd, Suite 600, South San Francisco, CA 94080, USA
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Saifi O, Lester SC, Rule WG, Breen W, Stish BJ, Rosenthal A, Munoz J, Lin Y, Johnston P, Ansell SM, Paludo J, Khurana A, Bisneto JV, Wang Y, Iqbal M, Moustafa MA, Murthy HS, Kharfan-Dabaja M, Peterson JL, Hoppe BS. Consolidative Radiotherapy for Residual PET-Avid Disease on Day +30 Post CAR T-Cell Therapy in Non-Hodgkin Lymphoma. Int J Radiat Oncol Biol Phys 2023; 117:S52. [PMID: 37784518 DOI: 10.1016/j.ijrobp.2023.06.335] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Up to30% of non-Hodgkin lymphoma (NHL) patients achieve a partial response (PR) to anti-CD19 Chimeric Antigen Receptor T-cell Therapy (CART) on day +30. Most PR patients relapse and only 30% achieve spontaneous complete response (CR) without additional therapies. This study is the first to report on the role of consolidative radiotherapy (cRT) for PR PET-avid disease on day +30 post-CART in NHL. MATERIALS/METHODS Aretrospective review across 3 institutions from 2018 to 2022 identified 60 patients with B-cell NHL who received CART and achieved PR (Deauville 4-5) with <5 PET-avid disease sites on day +30. Progression-free survival (PFS) was defined from CART infusion to any disease progression. Overall survival (OS) was defined from CART infusion to death. Local relapse-free survival (LRFS), calculated based on the total number of PR sites, was defined from CART infusion to local relapse (LR) in the PR site identified on day +30. cRT was defined as comprehensive (compRT) - treated all PR PET-avid sites - or focal (focRT). RESULTS Followingday +30 PET scan, 45 PR patients were observed and 15 received cRT. Only one patient received consolidative systemic therapy and belonged to the cRT group. Prior to CART, bridging RT was given to 13 patients (9 in observation group and 4 in cRT group). There were no significant differences in the pre-CART and day +30 baseline characteristics, including the median size and SUVmax of the PR sites, between the two groups. However, the median number of PR sites on day +30 was higher in the cRT group (2 [range 1-3] vs 1 [range 1-3], p = 0.003). The median equivalent 2 Gy dose was 39.1 (Interquartile range 36.8-41) Gy, and the most common cRT regimen was 37.5 Gy in 15 fractions. The median follow-up was 21 months. Among the observed patients, 15 (33%) achieved spontaneous CR, and 27 (60%) experienced disease progression with all relapses involving the initial PR sites. Among patients who received cRT, 10 (67%) achieved CR, and 3 (20%) had disease progression with no relapses in the radiated PR sites. None of the 10 cRT patients achieving CR relapsed or required subsequent therapies. The 2-year PFS was 80% and 37% (p = 0.012) and the 2-year OS was 78% and 43% (p = 0.12) in the cRT and observation groups, respectively. Patients consolidated with compRT (n = 12) had superior 2-year PFS (92% vs 37%, p = 0.003) and 2-year OS (86% vs 43%, p = 0.048) compared to observed or focRT patients (n = 48). There were no grade 3+ RT-related toxicities. A total of 90 PR sites were identified; 64 were observed and 26 received cRT. Fourteen (22%) observed PR sites achieved spontaneous sustained CR and 42 (66%) experienced LR. Twenty-four (92%) PR sites consolidated with cRT achieved sustained CR and none experienced LR. The 2-year LRFS was 100% in the cRT sites and 31% in the observed sites (p<0.001). CONCLUSION NHL patients who achieve PR by PET to CART are at high risk of local progression. cRT for residual PET-avid disease on day +30 post-CART appears to alter the pattern of relapse and improve LRFS and PFS.
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Affiliation(s)
- O Saifi
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
| | - S C Lester
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - W G Rule
- Department of Radiation Oncology, Mayo Clinic, Phoenix, AZ
| | - W Breen
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - B J Stish
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - A Rosenthal
- Division of Hematology, Mayo Clinic, Phoenix, AZ
| | - J Munoz
- Division of Hematology, Mayo Clinic, Phoenix, AZ
| | - Y Lin
- Division of Experimental Pathology, Mayo Clinic, Rochester, MN; Division of Hematology, Mayo Clinic, Rochester, MN
| | - P Johnston
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - S M Ansell
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - J Paludo
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - A Khurana
- Division of Hematology, Mayo Clinic, Rochester, MN
| | | | - Y Wang
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - M Iqbal
- Division of Hematology, Mayo Clinic, Jacksonville, FL
| | | | - H S Murthy
- Division of Hematology, Mayo Clinic, Jacksonville, FL
| | | | - J L Peterson
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
| | - B S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
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Saifi O, Rule WG, Lester SC, Laack NN, Breen W, Rosenthal A, Ansell SM, Habermann TM, Villasboas Bisneto J, Iqbal M, Alhaj Moustafa M, Tun H, Kharfan-Dabaja M, Peterson JL, Hoppe BS. The Role of Radiation Therapy in the Management of Gray Zone Lymphoma. Int J Radiat Oncol Biol Phys 2023; 117:e484-e485. [PMID: 37785532 DOI: 10.1016/j.ijrobp.2023.06.1711] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Gray zone lymphoma (GZL) is a relatively rare disease predominantly affecting young adults with purportedly poor outcomes with current treatment approaches. The role of radiation therapy (RT) in the management of GZL is not well established. This is the largest study to report on the outcomes of GZL patients treated with and without RT. MATERIALS/METHODS A retrospective review of 30 patients with GZL treated across 3 institutions from 2009 to 2021 was performed. Event-free survival (EFS) was defined from initiation of frontline chemotherapy (CHT) to disease progression/relapse, initiation of salvage therapy, or death. Local control (LC) was defined from RT start date to in-field recurrence. RESULTS The median age was 32 (range: 18-86) years, and 16 (53%) patients had early stage (I-II) disease. Bulky mediastinal disease was present in 63% of patients, and the median tumor diameter was 10 (range: 1.5-18) cm. Patients received ABVD (20%), RCHOP (33%), or REPOCH (47%) as frontline CHT. Among 25 patients with interim PET/CT scan, there were 6 rapid early responders and 14 slow early responders (SER), with 2-year EFS of 33% and 24%, respectively (p = 0.13). After the completion of CHT, 15 (50%) patients achieved complete response (CR) and 10 (33%) achieved partial response (PR), with 2-year EFS of 46% and 10%, respectively (p = 0.004). RT was given to 9 patients in CR (n = 3) or in PR (n = 6). The median RT dose was 36 (30.6-48.6) Gy, at 1.8-2 Gy/fraction. Those receiving RT had bulkier disease at diagnosis (p = 0.049) and lower rates of CR following CHT (p = 0.03). After RT, 3/6 (50%) PR patients converted to CR. At a median follow-up of 4 years, the 2-year EFS was 26% for all patients, 33% for RT and 23% for noRT (p = 0.44). Among patients who did not receive upfront RT and experienced progression (n = 17), 16 (94%) relapsed in pre-existing sites. The 5-year OS was 80% for all patients, 88% for RT and 78% for no RT (p = 0.63). Patients who achieved PR to CHT and received RT had better 2-year EFS (17% vs 0%, p = 0.007) compared to patients who did not receive RT. Similarly, patients with SER who received RT had superior 2-year EFS (33% vs 13%, p = 0.038). Patients with bulky mediastinal disease had a 2-year EFS of 43% with RT and 11% without RT (p = 0.08). After 1st line treatment, 22 (73%) patients relapsed and 18 were successfully salvaged with a sustained CR. The most common salvage regimen involved high dose CHT followed by hematopoietic cell transplantation (HCT) (n = 15). RT was given for 7 patients in the relapsed/refractory setting (consolidative peri-HCT n = 4; definitive salvage n = 3) and 5 (71%) achieved a sustained CR. Among the 16 patients who received RT in the upfront (n = 9) or salvage (n = 7) setting, 3 patients experienced in-field recurrence translating to 2-year LC of 79%. CONCLUSION GZL patients have high risk of relapse and maximal upfront combined modality therapy should be considered. RT provides good local control and improves EFS particularly for SER, PR, and bulky mediastinal disease.
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Affiliation(s)
- O Saifi
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
| | - W G Rule
- Department of Radiation Oncology, Mayo Clinic, Phoenix, AZ
| | - S C Lester
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - N N Laack
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - W Breen
- Department of Radiation Oncology, Mayo Clinic, Rochester, MN
| | - A Rosenthal
- Division of Hematology, Mayo Clinic, Phoenix, AZ
| | - S M Ansell
- Division of Hematology, Mayo Clinic, Rochester, MN
| | | | | | - M Iqbal
- Division of Hematology, Mayo Clinic, Jacksonville, FL
| | | | - H Tun
- Division of Hematology, Mayo Clinic, Jacksonville, FL
| | | | - J L Peterson
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
| | - B S Hoppe
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL
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Kurnellas M, Mitra A, Schwabe T, Paul R, Arrant AE, Roberson ED, Ward M, Yeh F, Long H, Rosenthal A. Latozinemab, a novel progranulin-elevating therapy for frontotemporal dementia. J Transl Med 2023; 21:387. [PMID: 37322482 PMCID: PMC10268535 DOI: 10.1186/s12967-023-04251-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 11/30/2022] [Accepted: 06/08/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND Heterozygous loss-of-function mutations in the progranulin (PGRN) gene (GRN) cause a reduction in PGRN and lead to the development of frontotemporal dementia (FTD-GRN). PGRN is a secreted lysosomal chaperone, immune regulator, and neuronal survival factor that is shuttled to the lysosome through multiple receptors, including sortilin. Here, we report the characterization of latozinemab, a human monoclonal antibody that decreases the levels of sortilin, which is expressed on myeloid and neuronal cells and shuttles PGRN to the lysosome for degradation, and blocks its interaction with PGRN. METHODS In vitro characterization studies were first performed to assess the mechanism of action of latozinemab. After the in vitro studies, a series of in vivo studies were performed to assess the efficacy of a mouse-cross reactive anti-sortilin antibody and the pharmacokinetics, pharmacodynamics, and safety of latozinemab in nonhuman primates and humans. RESULTS In a mouse model of FTD-GRN, the rodent cross-reactive anti-sortilin antibody, S15JG, decreased total sortilin levels in white blood cell (WBC) lysates, restored PGRN to normal levels in plasma, and rescued a behavioral deficit. In cynomolgus monkeys, latozinemab decreased sortilin levels in WBCs and concomitantly increased plasma and cerebrospinal fluid (CSF) PGRN by 2- to threefold. Finally, in a first-in-human phase 1 clinical trial, a single infusion of latozinemab caused a reduction in WBC sortilin, tripled plasma PGRN and doubled CSF PGRN in healthy volunteers, and restored PGRN to physiological levels in asymptomatic GRN mutation carriers. CONCLUSIONS These findings support the development of latozinemab for the treatment of FTD-GRN and other neurodegenerative diseases where elevation of PGRN may be beneficial. Trial registration ClinicalTrials.gov, NCT03636204. Registered on 17 August 2018, https://clinicaltrials.gov/ct2/show/NCT03636204 .
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Affiliation(s)
- Michael Kurnellas
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA.
- Neuron23, South San Francisco, CA, 94080, USA.
| | - Ananya Mitra
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
| | - Tina Schwabe
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
- Nine Square Therapeutics, Inc., South San Francisco, CA, 94080, USA
| | - Robert Paul
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
- Nine Square Therapeutics, Inc., South San Francisco, CA, 94080, USA
| | - Andrew E Arrant
- Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, and Evelyn F. McKnight Brain Institute, Departments of Neurology and Neurobiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Erik D Roberson
- Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, and Evelyn F. McKnight Brain Institute, Departments of Neurology and Neurobiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Michael Ward
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
| | - Felix Yeh
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
- Genentech, South San Francisco, CA, 94080, USA
| | - Hua Long
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
| | - Arnon Rosenthal
- Alector, Inc., 131 Oyster Point Blvd, #600, South San Francisco, CA, 94080, USA
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Abdelhameed S, Samudio A, Rosenthal A, Davila H. Quantifying pubocervical fibromuscularis elasticity under normal and prolapse conditions by shear wave elastography and comparison with urodynamics findings. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00105-7] [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: 02/12/2023]
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Yang J, Deresa I, Ho WH, Long H, Maslyar D, Rosenthal A, Liang SC, Pincetic A. AL008 Enhances Myeloid Antitumor Function by Inhibiting SIRPα Signaling and Activating Fc Receptors. J Immunol 2023; 210:204-215. [PMID: 36480261 PMCID: PMC9772397 DOI: 10.4049/jimmunol.2200157] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 11/02/2022] [Indexed: 01/03/2023]
Abstract
Antagonizing the CD47-signal regulatory protein (SIRP)α pathway, a critical myeloid checkpoint, promotes antitumor immunity. In this study, we describe the development of AL008, a pan-allelic, SIRPα-specific Ab that triggers the degradation of SIRPα and, concurrently, stimulates FcγR activation of myeloid cells through an engineered Fc domain. AL008 showed superior enhancement of phagocytosis of tumor cells opsonized with antitumor Ag Abs compared with another SIRPα Ab tested. Unlike ligand-blocking SIRPα Abs, AL008 demonstrated single-agent activity by increasing tumor cell engulfment by human monocyte-derived macrophages even in the absence of opsonizing agents. This effect was due to enhanced Fc function, as blocking FcγR2A abrogated AL008-mediated phagocytic activity. AL008 also promoted human monocyte-derived dendritic cell-mediated T cell proliferation. In humanized mouse models, AL008 induced internalization of SIRPα and increased expression of CD86 and HLA-DR on human tumor-associated macrophages, confirming that the mechanism of action is retained in vivo. Monotherapy treatment with AL008 significantly reduced tumor growth in humanized mice implanted with human MDA-MB-231 tumor cells. AL008 also significantly potentiated the effects of T cell checkpoint blockade with anti-programmed death ligand-1 in syngeneic tumor models. This dual and specific mechanism of AL008, to our knowledge, provides a novel therapeutic strategy for targeting myeloid cells for immune activation.
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Affiliation(s)
| | | | | | - Hua Long
- Alector, Inc., South San Francisco, CA
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Rosenthal A. Immunoneurology; targeting the brain Immune system as a novel therapeutic strategy for dementia and neurodegeneration. Alzheimers Dement 2022. [DOI: 10.1002/alz.059641] [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: 12/24/2022]
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Flores J, Moriarty A, Lizette F, Lang A, Rosenthal A, Papadopoulos K, Beeram M, Patnaik A, Rasco D, DeBerry B, Elmi M, Drengler R, Hernandez T, Sharma M, Lakhani N, Smith L, Moreno V, Calvo E, Garcia-Foncillas J, Wick M. Identification and molecular characterization of invasive lobular breast cancer models in a panel of 180 breast XPDX models. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01121-2] [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: 11/03/2022]
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Lambris JD, Rosenthal A, Pelegrín P, Tremblay MÈ, Chen P. The future of neuroimmunology research for CNS disease therapeutics. Trends Pharmacol Sci 2022; 43:611-614. [PMID: 35839748 DOI: 10.1016/j.tips.2022.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- John D Lambris
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | | | - Pablo Pelegrín
- Biomedical Research Institute of Murcia (IMIB), Faculty of Medicine, University of Murcia, 30120 Murcia, Spain; Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120 Murcia, Spain.
| | - Marie-Ève Tremblay
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada; Axe Neurosciences, Centre de Recherche du CHU de Québec, Université Laval, Québec City, QC, Canada; Neurology and Neurosurgery Department, McGill University, Montréal, QC, Canada; Department of Molecular Medicine, Université Laval, Québec City, QC, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada; Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada.
| | - Peiwen Chen
- Department of Neurological Surgery, Lou and Jean Malnati Brain Tumor Institute, Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Adriaenssens T, Van Vaerenbergh I, Reis M, Van Landuyt L, Verheyen G, Debrucker M, Camus M, Platteau P, De Vos M, Coucke W, Vanhecke E, Rosenthal A, Smitz J. P-251 Cumulus cell analysis as a non-invasive oocyte selection strategy to reduce the number of oocytes/embryos cultured and increase pregnancy rates. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.241] [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
Can non-invasive gene expression analysis of cumulus cells (CC) improve efficiency in ART by prioritizing oocytes for further culture and fresh single embryo transfer?
Summary answer
CC analysis can be used for the selective processing of oocytes. This may reduce culture work and improve the outcome in ICSI elective SETs (eSET).
What is known already
In an interventional, blinded, prospective cohort study (Van Vaerenbergh et al. 2021), 113 patients underwent a fresh Day3 eSET with embryos ranked and transferred based on morphology and CC gene expression (Aurora Test), while 520 control patients underwent a Day3 eSET without the Aurora Test. This resulted in a significant higher clinical pregnancy of 61% in the patients with eSET based on CC ranking applied on good morphology embryos, compared to 29% in the controls with eSET based on embryo morphology only. Live birth rate was also significantly increased, while time-to-pregnancy was significantly reduced with 3 transfer cycles.
Study design, size, duration
In a retrospective analysis, in a subset of patients with at least 6 growing follicles and at least five 2PN oocytes (n = 80), it was investigated whether the Aurora Test, used to select transferrable Day3-embryos, could also be applied to select oocytes on Day0/1. The effect of processing only the three highest ranked oocytes (based on the Aurora Test) on embryo development and clinical pregnancy was studied compared to processing all oocytes.
Participants/materials, setting, methods
Patients included in this single centre study had their first or second GnRH-antagonist ICSI cycle, were younger than 40y, had normal BMI, were stimulated with HP-hMG and scheduled for Day3 eSET. Two-sided statistical analysis (p < 0,05) was performed between a strategy of processing only the top 3 Aurora ranked oocytes, according to CC gene expression, and a strategy of processing all available oocytes.
Main results and the role of chance
On average, 8 MII oocytes were obtained per patient and the average fertilization rate was 83%. In total, 407 good quality embryos (GQE) on Day3 were generated from these 80 patients when utilising all 639 oocytes. Processing the three top-ranked oocytes only (240/639 oocytes) would have reduced the number of embryos to 169 GQE and would have resulted in 2.1 GQE on average on Day3 per patient; 75/80 (94%) patients would have had a fresh Day3 transfer resulting in a 63% clinical pregnancy rate. Processing all 639 available 2PN oocytes (standard of care) resulted in a fresh Day3 transfer in all 80 patients and a similar 64% clinical pregnancy rate (ns). However, 399 more oocytes would need to be processed. The strategy of restricting the number of oocytes to be processed would not have compromised cumulative cycle outcome. Considering all subsequent freeze/thawing cycles the cumulative clinical pregnancy rate calculated per all 80 patients would increase to 90%.
Limitations, reasons for caution
The limitation of this approach is that the Aurora Test requires individual oocyte denudation and individual oocyte vitrification. Secondly, this new strategy should be validated in a prospective study.
Wider implications of the findings
By applying this oocyte selection strategy patients would benefit from a high pregnancy rate in the fresh transfer cycle, while the lab would see reduction in embryo culture work, because freeze/thawing cycles and culture of embryos with lower competence would be prevented.
Trial registration number
NA
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Affiliation(s)
| | | | - M Reis
- Fertiga, Fertiga , Jette- Brussels, Belgium
| | | | - G Verheyen
- UZBrussel, Brussels IVF , Brussels, Belgium
| | | | - M Camus
- UZBrussel, Brussels IVF , Brussels, Belgium
| | - P Platteau
- UZBrussel, Brussels IVF , Brussels, Belgium
| | - M De Vos
- UZBrussel, Brussels IVF , Brussels, Belgium
| | - W Coucke
- Sciensano, Quality of Laboratories- , Brussels, Belgium
| | - E Vanhecke
- Fertiga, Fertiga , Jette- Brussels, Belgium
| | | | - J Smitz
- Fertiga, Fertiga , Jette- Brussels, Belgium
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Nalle S, Lam H, Barner C, Long H, Liang S, Rosenthal A, Maslyar D. Abstract 613: AL009 is a multi-Siglec inhibitor engineered to bind myeloid cells that enhances innate and adaptive immunity to cancer. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-613] [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: 11/16/2022]
Abstract
Abstract
Background - Inhibitory sialic acid-binding immunoglobulin-type lectins (Siglecs) are a subset of the Siglec family of cell surface receptors that potentiate immune tolerance. A multitude of inhibitory Siglecs on myeloid cells become engaged in sialic acid-rich tumor microenvironments, suggesting that disrupting Siglec-sialic acid signaling could confer therapeutic benefit in cancer. To accomplish this, we designed AL009, an engineered Siglec-9 extracellular domain-Fc fusion molecule that acts as a sialic acid trap and a multi-Siglec inhibitor, repolarizing suppressive myeloid cells and activating an anti-cancer response.
Methods - Cooperative binding of AL009 was analyzed by flow cytometry using cultured human tumor cell lines and myeloid-derived suppressor cells (MDSCs) differentiated from primary human monocytes. Monocytes, MDSCs, and macrophages differentiated from primary human monocytes were assessed for AL009 binding by flow cytometry. AL009m (AL009 with a mouse Fc) was fluorophore-labeled and intravenously injected into B6 mice to analyze biodistribution via ex vivo tissue imaging over time. Initial toxicology screening was conducted in cynomolgus monkeys in a non-terminal study.
Results - AL009 displays cooperative binding with sialic acid and Fc gamma receptors on myeloid cells. When comparing binding among myeloid cell subsets, AL009 preferentially binds MDSCs. Analysis of the biodistribution of labeled AL009m in mice showed the greatest accumulation in the spleen, consistent with immune cell targeting in vivo. Further, Fc engineering of AL009 improved the pharmacodynamic profile compared to a non-engineered Fc. In cynomolgus monkeys, single doses of 80 mg/kg appeared safe and without clinically significant findings.
Conclusions - The engineered structure of AL009 leads to preferential binding to an immunosuppressive subset of myeloid cells. This targeting leads to repolarization of myeloid cells and activates an innate and adaptive anti-cancer response. Pharmacologically relevant doses of AL009 appear well-tolerated in initial studies in non-human primates, supporting further development for entry into clinical studies.
Citation Format: Sam Nalle, Helen Lam, Cheryl Barner, Hua Long, Spencer Liang, Arnon Rosenthal, Daniel Maslyar. AL009 is a multi-Siglec inhibitor engineered to bind myeloid cells that enhances innate and adaptive immunity to cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 613.
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Affiliation(s)
| | | | | | - Hua Long
- 1Alector, South San Francisco, CA
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Joffe E, Nowakowski G, Tun H, Rosenthal A, Lunning M, Ramchandren R, Li CC, Zhou L, Martinez E, von Roemeling R, Earhart R, McMahon M, Isufi I, Leslie L. P1121: TAKEAIM LYMPHOMA- AN OPEN-LABEL, DOSE ESCALATION AND EXPANSION TRIAL OF EMAVUSERTIB (CA-4948) IN COMBINATION WITH IBRUTINIB IN PATIENTS WITH RELAPSED OR REFRACTORY HEMATOLOGIC MALIGNANCIES. Hemasphere 2022. [PMCID: PMC9430533 DOI: 10.1097/01.hs9.0000847352.16311.ea] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Rhinn H, Tatton N, McCaughey S, Kurnellas M, Rosenthal A. Progranulin as a therapeutic target in neurodegenerative diseases. Trends Pharmacol Sci 2022; 43:641-652. [PMID: 35039149 DOI: 10.1016/j.tips.2021.11.015] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [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: 08/02/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 01/02/2023]
Abstract
Progranulin (PGRN, encoded by the GRN gene) plays a key role in the development, survival, function, and maintenance of neurons and microglia in the mammalian brain. It regulates lysosomal biogenesis, inflammation, repair, stress response, and aging. GRN loss-of-function mutations cause neuronal ceroid lipofuscinosis or frontotemporal dementia-GRN (FTD-GRN) in a gene dosage-dependent manner. Mutations that reduce PGRN levels increase the risk for developing Alzheimer's disease, Parkinson's disease, and limbic-predominant age-related transactivation response DNA-binding protein 43 encephalopathy, as well as exacerbate the progression of amyotrophic lateral sclerosis (ALS) and FTD caused by the hexanucleotide repeat expansion in the C9orf72 gene. Elevating and/or restoring PGRN levels is an attractive therapeutic strategy and is being investigated for neurodegenerative diseases through multiple mechanisms of action.
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Affiliation(s)
- Herve Rhinn
- Alector, Inc., South San Francisco, CA 94080, USA
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Taaffe J, Croda J, Moultrie H, Silva DS, Rosenthal A, Farhat M. Advancing TB research using digitized programmatic data. Int J Tuberc Lung Dis 2021; 25:890-895. [PMID: 34686230 PMCID: PMC8544923 DOI: 10.5588/ijtld.21.0325] [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: 11/10/2022] Open
Abstract
The use of real-world data from national TB care programs has great potential to answer key research questions in TB control and is now opportune due to increasing digital data collection and storage. We summarize an expert stakeholder workshop conducted on this topic in October 2019, with perspectives from academics, national TB program officers, and data managers. We discuss challenges and opportunities in the use of TB programmatic data for research and describe digital data availability in two large, high TB burden countries, Brazil and South Africa. From this, we posit that with a standardized data collection set, improved data management, and greater collaboration, more TB programmatic data can be used for research with measurable public health impact.
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Affiliation(s)
- J Taaffe
- Office of Cyber Infrastructure and Computational Biology, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - J Croda
- Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil, Department of Epidemiology of Microbial Diseases, Yale University School of Public Health, New Haven, NJ, USA, Oswaldo Cruz Foundation, Campo Grande, MS, Brazil
| | - H Moultrie
- National Institute for Communicable Diseases, Division of the National Health Laboratory Service, Johannesburg, South Africa
| | - D S Silva
- Sydney Health Ethics, University of Sydney School of Public Health, Sydney, NSW, Australia
| | - A Rosenthal
- Office of Cyber Infrastructure and Computational Biology, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - M Farhat
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, Division of Pulmonary and Critical Care, Massachusetts General Hospital, Boston, MA, USA
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Saifi O, Breen W, Lester S, Rule W, Stish B, Rosenthal A, Munoz J, Murthy H, Lin Y, Kharfan-Dabaja M, Hoppe B, Peterson J. Radiation Therapy as Bridging Treatment to CAR T Cell Therapy in Non-Hodgkin Lymphoma. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Joffe E, Ramchandren R, Nowakowski G, Rosenthal A, Tun HW, Lunning M, Mead MD, Martinez E, von Roemeling R, Leslie L. AN OPEN‐LABEL TRIAL OF ORAL CA‐4948 AN IRAK4 INHIBITOR COMBINED WITH IBRUTINIB IN ADULT PATIENTS WITH RELAPSED OR REFRACTORY HEMATOLOGIC MALIGNANCIES. Hematol Oncol 2021. [DOI: 10.1002/hon.169_2880] [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: 11/10/2022]
Affiliation(s)
- E. Joffe
- Memorial Sloan Kettering Cancer Center Hematology Oncology‐ Lymphoma Services NY New York USA
| | - R. Ramchandren
- University of Tennessee Medical Center‐ University Cancer Specialists Hematology Medical Oncology Knoxville Tennessee USA
| | - G. Nowakowski
- Mayo Clinic‐Minnesota Rochester MN, Hematology ‐ Cancer Center Rochester Minnesota USA
| | - A. Rosenthal
- Mayo Clinic‐Arizona, Hematology Phoenix Arizona USA
| | - H. W. Tun
- Mayo Clinic Florida Hematology Oncology‐ Caner Center Jacksonville Florida USA
| | - M. Lunning
- University of Nebraska Division of Oncology & Hematology Omaha Nebraska USA
| | - M. D. Mead
- University of California Los Angeles‐ Santa Monica Medical Center Medicine, Hematology and Oncology Santa Monica California USA
| | - E. Martinez
- Curis, Clinical Development Lexington Massachusetts USA
| | | | - L. Leslie
- John Theurer Cancer Center Hackensack, NJ, Hematology Oncology Hackensack New Jersey USA
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Tedeschi S, Pascart T, Latourte A, Godsave C, Kundaki B, Naden R, Taylor W, Dalbeth N, Neogi T, Perez-Ruiz F, Rosenthal A, Becce F, Pascual E, Andrés M, Bardin T, Doherty M, Ea HK, Filippou G, Fitzgerald J, Gutierrez M, Iagnocco A, Jansen T, Kohler M, Lioté F, Matza M, Mccarthy G, Ramonda R, Reginato A, Richette P, Singh J, Sivera F, So A, Stamp L, Yinh J, Yokose C, Terkeltaub R, Choi H, Abhishek A. POS1124 IDENTIFYING POTENTIAL CLASSIFICATION CRITERIA FOR CALCIUM PYROPHOSPHATE DEPOSITION DISEASE (CPPD): RESULTS FROM THE INITIAL PHASES. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.469] [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: 11/03/2022]
Abstract
Background:Classification criteria for calcium pyrophosphate deposition disease (CPPD) will facilitate clinical research on this common crystalline arthritis. ACR/EULAR are jointly sponsoring development of CPPD classification criteria using a multi-phase process.Objectives:To report preliminary results from the first two phases of a four-phase process for developing CPPD classification criteria.Methods:CPPD classification criteria development is overseen by a 12-member Steering Committee. Item generation (Phase I) included a scoping literature review of five literature databases and contributions from a 35-member Combined Expert Committee and two Patient Research Partners. Item reduction and refinement (Phase II) involved a Combined Expert Committee meeting, discussions among Clinical, Imaging, and Laboratory Advisory Groups, and an item rating exercise to assess the influence of individual items toward classification. The Steering Committee reviewed the modal rating score for each item (range -3 [strongly pushes away from CPPD] to +3 [strongly pushes toward CPPD]) to determine items to retain for future phases of criteria development.Results:Item generation yielded 420 items (312 from the literature, 108 from experts/patients). The Advisory Groups eliminated items they agreed were unlikely to distinguish between CPPD and other forms of arthritis, yielding 127 items for the item rating exercise. Fifty-six items, most of which had a modal rating of +/- 2 or 3, were retained for future phases (see Table 1). As numerous imaging items were rated +3, the Steering Committee recommended focusing on imaging of the knee, wrist, and one additional affected joint for calcification suggestive of CPP crystal deposition.Conclusion:The ACR/EULAR CPPD classification criteria working group has adopted both data- and expert-driven approaches, leading to 56 candidate items broadly categorized as clinical, imaging, and laboratory features. Remaining steps for criteria development include domain establishment, item weighting through a multi-criteria decision analysis exercise, threshold score determination, and criteria validation.Table 1.Categories of items retained for future phases of classification criteria developmentAge in decade at symptom onsetAcute inflammatory arthritis (e.g. knee, wrist, 1st MTP joint*)Recurrence and pattern of joint involvement (e.g. 1 self-limited episode, >1 self-limited episode)Physical findings (e.g. palpable subcutaneous tophus*, psoriasis*)Co-morbidities and family history (e.g. Gitelman disease, hemochromatosis, familial CPPD)Osteoarthritis location and features (e.g. 2nd or 3rd MCP joint, wrist)Synovial fluid findings (e.g. CPP crystals present, CPP crystals absent on 1 occasion* or 2 occasions*, monosodium urate crystals present*)Laboratory findings (e.g. hypomagnesemia, hyperparathyroidism, rheumatoid factor*, anti-CCP*)Plain radiograph: calcification in regions of fibro- or hyaline cartilage+Plain radiograph: calcification of the synovial membrane/capsule/tendon+Conventional CT: calcification in regions of fibro- or hyaline cartilage+Conventional CT: calcification of the synovial membrane/capsule/tendon+Ultrasound: CPP crystal deposition in fibro- or hyaline cartilage+Ultrasound: CPP crystal deposition in synovial membrane/capsule/tendons+Dual-energy CT: CPP crystal deposition in fibro- or hyaline cartilage+Dual-energy CT: CPP crystal deposition in synovial membrane/capsule/tendon+*Potential negative predictor +Assessed in the knee, wrist, and/or 1 additional affected jointDisclosure of Interests:Sara Tedeschi Consultant of: NGM Biopharmaceuticals, Tristan Pascart: None declared, Augustin Latourte Consultant of: Novartis, Cattleya Godsave: None declared, Burak Kundaki: None declared, Raymond Naden: None declared, William Taylor: None declared, Nicola Dalbeth Speakers bureau: Abbvie and Janssen, Consultant of: AstraZeneca, Dyve, Selecta, Horizon, Arthrosi, and Cello Health, Tuhina Neogi: None declared, Fernando Perez-Ruiz: None declared, Ann Rosenthal: None declared, Fabio Becce Consultant of: Horizon Therapeutics, Grant/research support from: Siemens Healthineers, Eliseo Pascual: None declared, Mariano Andrés: None declared, Thomas Bardin: None declared, Michael Doherty: None declared, Hang Korng Ea: None declared, Georgios Filippou: None declared, John FitzGerald: None declared, Marwin Gutierrez: None declared, Annamaria Iagnocco: None declared, Tim Jansen Speakers bureau: Abbvie, Amgen, BMS, Grunenthal, Olatec, Sanofi Genzyme, Consultant of: Abbvie, Amgen, BMS, Grunenthal, Olatec, Sanofi Genzyme, Minna Kohler Speakers bureau: Lilly, Consultant of: Novartis, Frederic Lioté: None declared, Mark Matza: None declared, Geraldine McCarthy Consultant of: PK Med, Roberta Ramonda: None declared, Anthony Reginato: None declared, Pascal Richette: None declared, Jasvinder Singh Speakers bureau: Simply Speaking, Consultant of: Crealta/Horizon, Medisys, Fidia, UBM LLC, Trio health, Medscape, WebMD, Adept Field Solutions, Clinical Care options, Clearview healthcare partners, Putnam associates, Focus forward, Navigant consulting, Spherix, Practice Point communications, Francisca Sivera: None declared, Alexander So: None declared, Lisa Stamp: None declared, Janeth Yinh: None declared, Chio Yokose: None declared, Robert Terkeltaub Consultant of: Sobi, Horizon Therapeutics, Astra-Zeneca, Selecta, Grant/research support from: Astra-Zeneca, Hyon Choi: None declared, Abhishek Abhishek Consultant of: NGM Biopharmaceuticals.
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Wang S, Mustafa M, Yuede CM, Salazar SV, Kong P, Long H, Ward M, Siddiqui O, Paul R, Gilfillan S, Ibrahim A, Rhinn H, Tassi I, Rosenthal A, Schwabe T, Colonna M. Anti-human TREM2 induces microglia proliferation and reduces pathology in an Alzheimer's disease model. J Exp Med 2021; 217:151887. [PMID: 32579671 PMCID: PMC7478730 DOI: 10.1084/jem.20200785] [Citation(s) in RCA: 196] [Impact Index Per Article: 65.3] [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: 04/23/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 01/22/2023] Open
Abstract
TREM2 is a receptor for lipids expressed in microglia. The R47H variant of human TREM2 impairs ligand binding and increases Alzheimer’s disease (AD) risk. In mouse models of amyloid β (Aβ) accumulation, defective TREM2 function affects microglial response to Aβ plaques, exacerbating tissue damage, whereas TREM2 overexpression attenuates pathology. Thus, AD may benefit from TREM2 activation. Here, we examined the impact of an anti-human TREM2 agonistic mAb, AL002c, in a mouse AD model expressing either the common variant (CV) or the R47H variant of TREM2. Single-cell RNA-seq of microglia after acute systemic administration of AL002c showed induction of proliferation in both CV- and R47H-transgenic mice. Prolonged administration of AL002c reduced filamentous plaques and neurite dystrophy, impacted behavior, and tempered microglial inflammatory response. We further showed that a variant of AL002c is safe and well tolerated in a first-in-human phase I clinical trial and engages TREM2 based on cerebrospinal fluid biomarkers. We conclude that AL002 is a promising candidate for AD therapy.
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Affiliation(s)
- Shoutang Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | | | - Carla M Yuede
- Department of Psychiatry and Neurology, Washington University School of Medicine, St Louis, MO
| | | | | | - Hua Long
- Alector LLC, South San Francisco, CA
| | | | | | | | - Susan Gilfillan
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
| | | | | | | | | | | | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, MO
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21
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Cignarella F, Filipello F, Bollman B, Cantoni C, Locca A, Mikesell R, Manis M, Ibrahim A, Deng L, Benitez BA, Cruchaga C, Licastro D, Mihindukulasuriya K, Harari O, Buckland M, Holtzman DM, Rosenthal A, Schwabe T, Tassi I, Piccio L. TREM2 activation on microglia promotes myelin debris clearance and remyelination in a model of multiple sclerosis. Acta Neuropathol 2020; 140:513-534. [PMID: 32772264 PMCID: PMC7498497 DOI: 10.1007/s00401-020-02193-z] [Citation(s) in RCA: 171] [Impact Index Per Article: 42.8] [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: 03/14/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 01/13/2023]
Abstract
Multiple sclerosis (MS) is an inflammatory, demyelinating, and neurodegenerative disease of the central nervous system (CNS) triggered by autoimmune mechanisms. Microglia are critical for the clearance of myelin debris in areas of demyelination, a key step to allow remyelination. TREM2 is expressed by microglia and promotes microglial survival, proliferation, and phagocytic activity. Herein we demonstrate that TREM2 was highly expressed on myelin-laden phagocytes in active demyelinating lesions in the CNS of subjects with MS. In gene expression studies, macrophages from subjects with TREM2 genetic deficiency displayed a defect in phagocytic pathways. Treatment with a new TREM2 agonistic antibody promoted the clearance of myelin debris in the cuprizone model of CNS demyelination. Effects included enhancement of myelin uptake and degradation, resulting in accelerated myelin debris removal by microglia. Most importantly, antibody-dependent TREM2 activation on microglia increased density of oligodendrocyte precursors in areas of demyelination, as well as the formation of mature oligodendrocytes thus enhancing remyelination and axonal integrity. These results are relevant as they propose TREM2 on microglia as a potential new target to promote remyelination.
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Affiliation(s)
- Francesca Cignarella
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
- Alector, 131 Oyster Point Blvd #600, South San Francisco, CA, 94080, USA
| | - Fabia Filipello
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele - Milan, 20090, Italy
| | - Bryan Bollman
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
| | - Claudia Cantoni
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
| | - Alberto Locca
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
| | - Robert Mikesell
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
| | - Melissa Manis
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
| | - Adiljan Ibrahim
- Alector, 131 Oyster Point Blvd #600, South San Francisco, CA, 94080, USA
| | - Li Deng
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
- Department of Anesthesiology, First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, China
| | - Bruno A Benitez
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA
- NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Carlos Cruchaga
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA
- NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Danilo Licastro
- ARGO Open Lab Platform for Genome sequencing, AREA Science Park, Padriciano 99, 34149, Trieste, Italy
| | - Kathie Mihindukulasuriya
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, 63110, USA
- NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Oscar Harari
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA
- NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Michael Buckland
- Brain and Mind Centre, University of Sydney, 94 Mallett St Camperdown, Sydney, NSW, 2050, Australia
| | - David M Holtzman
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Arnon Rosenthal
- Alector, 131 Oyster Point Blvd #600, South San Francisco, CA, 94080, USA
| | - Tina Schwabe
- Alector, 131 Oyster Point Blvd #600, South San Francisco, CA, 94080, USA
| | - Ilaria Tassi
- Alector, 131 Oyster Point Blvd #600, South San Francisco, CA, 94080, USA.
| | - Laura Piccio
- Department of Neurology, Washington University School of Medicine, 660 S. Euclid Avenue, Campus Box 8111, St. Louis, MO, 63110, USA.
- NeuroGenomics and Informatics, Washington University School of Medicine, St. Louis, MO, 63110, USA.
- Brain and Mind Centre, University of Sydney, 94 Mallett St Camperdown, Sydney, NSW, 2050, Australia.
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Schraa O, Rosenthal A, Wade MJ, Rieger L, Miletić I, Alex J. Assessment of aeration control strategies for biofilm-based partial nitritation/anammox systems. Water Sci Technol 2020; 81:1757-1765. [PMID: 32644968 DOI: 10.2166/wst.2020.174] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The objective of this work was to compare the nitrogen removal in mainstream, biofilm-based partial nitritation anammox (PN/A) systems employing (1) constant setpoint dissolved oxygen (DO) control, (2) intermittent aeration, and (3) ammonia-based aeration control (ABAC). A detailed water resource recovery facility (WRRF) model was used to study the dynamic performance of these aeration control strategies with respect to treatment performance and energy consumption. The results show that constant setpoint DO control cannot meet typical regulatory limits for total ammonia nitrogen (NHx-N). Intermittent aeration shows improvement but requires optimisation of the aeration cycle. ABAC shows the best treatment performance with the advantages of continuous operation and over 20% lower average energy consumption as compared to intermittent aeration.
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Affiliation(s)
- O Schraa
- inCTRL Solutions Inc., Dundas, ON, Canada E-mail:
| | | | - M J Wade
- School of Engineering, Newcastle University, Newcastle-upon-Tyne, UK and Dept. of Mathematics and Statistics, McMaster University, Hamilton, ON, Canada
| | - L Rieger
- inCTRL Solutions Inc., Dundas, ON, Canada E-mail:
| | - I Miletić
- inCTRL Solutions Inc., Dundas, ON, Canada E-mail:
| | - J Alex
- ifak e.V., Magdeburg, Germany
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Paul R, Ward M, Siddiqui O, Hagey M, Long H, King R, Schwabe T, Kurnellas M, Lu SP, Rosenthal A. P4-664: A PHASE 1 STUDY OF AL001 IN HEALTHY VOLUNTEERS AND FRONTOTEMPORAL DEMENTIA PATIENTS CARRYING A GRANULIN MUTATION. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.09.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
| | | | | | | | - Hua Long
- Alector, Inc.; South San Francisco CA USA
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Long H, Tu G, Schwabe T, Rhinn H, King R, Rosenthal A. O1‐08‐04: PRECLINICAL DEVELOPMENT OF TREM2 AGONIST ANTIBODY (AL002) IN CYNOMOLGUS MONKEYS. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hua Long
- Alector, Inc. South San Francisco CA USA
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Price BR, Sudduth TL, Weekman EM, Woolums A, Hawthorne D, Rosenthal A, Wilcock DM. O1‐08‐01: THERAPEUTIC TARGETING OF TREM2 BY AN ACTIVATING ANTIBODY AMELIORATES AMYLOID‐BETA DEPOSITION AND IMPROVES COGNITION IN THE 5XFAD MODEL OF ALZHEIMER'S DISEASE. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4559] [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: 11/15/2022]
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26
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Tinguely R, Rosenthal A, Simpson R, Ballinger S, Creely A, Frank S, Kuang A, Linehan B, McCarthy W, Milanese L, Montes K, Mouratidis T, Picard J, Rodriguez-Fernandez P, Sandberg A, Sciortino F, Tolman E, Zhou M, Sorbom B, Hartwig Z, White A. Neutron diagnostics for the physics of a high-field, compact, Q ≥ 1 tokamak. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.03.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Rosenthal A, Stoddard M, Chipps L, Herrmann J. Skin cancer prevention: a review of current topical options complementary to sunscreens. J Eur Acad Dermatol Venereol 2019; 33:1261-1267. [PMID: 30801825 DOI: 10.1111/jdv.15522] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 01/29/2019] [Indexed: 02/04/2023]
Abstract
The incidence of non-melanoma skin cancer (NMSC) is dramatically increasing worldwide, despite the increased use of improved sunscreens. In 2014, the Surgeon General estimated that 2.2-5.0 million people were treated annually for NMSC. As the number of newly diagnosed skin cancers continues to rise, there is a need for additional preventative measures beyond sunscreens. Several newer topical products that focus on boosting DNA repair, modulating DNA transcription, decreasing inflammation and selectively targeting precancerous cells may play an important role in future skin cancer prevention.
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Affiliation(s)
- A Rosenthal
- Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Research Department, Moy-Fincher-Chipps Facial Plastics & Dermatology, Beverly Hills, CA, USA
| | - M Stoddard
- Research Department, Moy-Fincher-Chipps Facial Plastics & Dermatology, Beverly Hills, CA, USA
| | - L Chipps
- Research Department, Moy-Fincher-Chipps Facial Plastics & Dermatology, Beverly Hills, CA, USA.,Department of Dermatology, Harbor-UCLA Medical Center, Torrance, CA, USA
| | - J Herrmann
- Research Department, Moy-Fincher-Chipps Facial Plastics & Dermatology, Beverly Hills, CA, USA.,Department of Dermatology, Harbor-UCLA Medical Center, Torrance, CA, USA
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Korducki J, Tidemann A, Tarima S, Grindel S, Urbain J, Mickschl D, Rosenthal A, Burns E. NATURAL INTERFACES FOR EVALUATION AND MANAGEMENT OF SHOULDER DYSFUNCTION. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3641] [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: 11/13/2022] Open
Affiliation(s)
| | | | | | | | - J Urbain
- Milwaukee School of Engineering University
| | | | | | - E Burns
- Medical College Of Wisconsin
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Jiang J, Adams H, Lange M, Siemann S, Feldkamp M, Schulze S, Froehler S, Yaung S, Yao L, Balasubramanyam A, Tikoo N, Achenbach H, Krügel R, Palma J, Rosenthal A. OA 10.06 Longitudinal Mutation Monitoring in Plasma by Deep Sequencing as a Potential Predictor of Disease Progression in NSCLC. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.386] [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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30
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Rosenthal A, Lange M, Beckert S, Hinzmann B, Woestmann C, Wehnl B, Schneider M, Meister M, Thomas M, Muley T, Warth A, Froehler S, Palma J, Herth F. P1.15-011 Longitudinal Mutation Monitoring in Plasma Without Matching Tumor Tissue by Deep Sequencing in Small Cell Lung Cancer (SCLC). J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1047] [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: 11/29/2022]
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Wells GF, Shi Y, Laureni M, Rosenthal A, Szivák I, Weissbrodt DG, Joss A, Buergmann H, Johnson DR, Morgenroth E. Comparing the Resistance, Resilience, and Stability of Replicate Moving Bed Biofilm and Suspended Growth Combined Nitritation-Anammox Reactors. Environ Sci Technol 2017; 51:5108-5117. [PMID: 28374996 DOI: 10.1021/acs.est.6b05878] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Combined partial nitritation-anammox (PN/A) systems are increasingly being employed for sustainable removal of nitrogen from wastewater, but process instabilities present ongoing challenges for practitioners. The goal of this study was to elucidate differences in process stability between PN/A process variations employing two distinct aggregate types: biofilm [in moving bed biofilm reactors (MBBRs)] and suspended growth biomass. Triplicate reactors for each process variation were studied under baseline conditions and in response to a series of transient perturbations. MBBRs displayed elevated NH4+ removal rates relative to those of suspended growth counterparts over six months of unperturbed baseline operation but also exhibited significantly greater variability in performance. Transient perturbations led to strikingly divergent yet reproducible behavior in biofilm versus suspended growth systems. A temperature perturbation prompted a sharp reduction in NH4+ removal rates with no accumulation of NO2- and rapid recovery in MBBRs, compared to a similar reduction in NH4+ removal rates but a high level of accumulation of NO2- in suspended growth reactors. Pulse additions of a nitrification inhibitor (allylthiourea) prompted only moderate declines in performance in suspended growth reactors compared to sharp decreases in NH4+ removal rates in MBBRs. Quantitative fluorescence in situ hybridization demonstrated a significant enrichment of anammox in MBBRs compared to suspended growth reactors, and conversely a proportionally higher AOB abundance in suspended growth reactors. Overall, MBBRs displayed significantly increased susceptibility to transient perturbations employed in this study compared to that of suspended growth counterparts (stability parameter), including significantly longer recovery times (resilience). No significant difference in the maximal impact of perturbations (resistance) was apparent. Taken together, our results suggest that aggregate architecture (biofilm vs suspended growth) in PN/A processes exerts an unexpectedly strong influence on process stability.
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Affiliation(s)
- G F Wells
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Civil and Environmental Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - Y Shi
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Environmental Science and Engineering, Shandong University , Jinan, China
| | - M Laureni
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Institute of Environmental Engineering, ETH Zürich , 8093 Zürich, Switzerland
| | - A Rosenthal
- Department of Civil and Environmental Engineering, Northwestern University , Evanston, Illinois 60208, United States
| | - I Szivák
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - D G Weissbrodt
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Institute of Environmental Engineering, ETH Zürich , 8093 Zürich, Switzerland
| | - A Joss
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - H Buergmann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - D R Johnson
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Environmental Systems Science, ETH Zürich , 8093 Zürich, Switzerland
| | - E Morgenroth
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Institute of Environmental Engineering, ETH Zürich , 8093 Zürich, Switzerland
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Hong S, Beja-Glasser VF, Nfonoyim BM, Frouin A, Li S, Ramakrishnan S, Merry KM, Shi Q, Rosenthal A, Barres BA, Lemere CA, Selkoe DJ, Stevens B. Complement and microglia mediate early synapse loss in Alzheimer mouse models. Science 2016; 352:712-716. [PMID: 27033548 PMCID: PMC5094372 DOI: 10.1126/science.aad8373] [Citation(s) in RCA: 1890] [Impact Index Per Article: 236.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 03/18/2016] [Indexed: 12/11/2022]
Abstract
Synapse loss in Alzheimer's disease (AD) correlates with cognitive decline. Involvement of microglia and complement in AD has been attributed to neuroinflammation, prominent late in disease. Here we show in mouse models that complement and microglia mediate synaptic loss early in AD. C1q, the initiating protein of the classical complement cascade, is increased and associated with synapses before overt plaque deposition. Inhibition of C1q, C3, or the microglial complement receptor CR3 reduces the number of phagocytic microglia, as well as the extent of early synapse loss. C1q is necessary for the toxic effects of soluble β-amyloid (Aβ) oligomers on synapses and hippocampal long-term potentiation. Finally, microglia in adult brains engulf synaptic material in a CR3-dependent process when exposed to soluble Aβ oligomers. Together, these findings suggest that the complement-dependent pathway and microglia that prune excess synapses in development are inappropriately activated and mediate synapse loss in AD.
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Affiliation(s)
- Soyon Hong
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Victoria F Beja-Glasser
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Bianca M Nfonoyim
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Arnaud Frouin
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Shaomin Li
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Saranya Ramakrishnan
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Katherine M Merry
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Qiaoqiao Shi
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Arnon Rosenthal
- Alector Inc., 953 Indiana St, San Francisco, California 94107, USA
- Annexon Biosciences, 280 Utah Avenue Suite 110, South San Francisco, California 94080, USA
- Department of Anatomy, University of California San Francisco, California 94143, USA
| | - Ben A Barres
- Department of Neurobiology, Stanford University School of Medicine, Palo Alto, California 94305, USA
| | - Cynthia A Lemere
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Dennis J Selkoe
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
- Prothena Biosciences, Dublin, Ireland
| | - Beth Stevens
- F.M. Kirby Neurobiology Center, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, USA
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Speiser S, Geisler S, Speiser L, Heinze G, Rosenthal A, Speiser P. Short-term Efficacy of trichloroacetic acid in the treatment of cervical intraepithelial neoplasia. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1582214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Wick MJ, Vaught T, Meade J, Gamez L, Farley M, Tolcher AW, Rasco D, Patnaik A, Drengler RL, Rosenthal A, Papadopoulos KP. Abstract P3-03-05: Establishment and evaluation of ER+ breast cancer models using an optimized methodology for exogenous hormone delivery. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-03-05] [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: 11/16/2022]
Abstract
Abstract
Preclinical in vivo models of estrogen receptor positive (ER+) breast cancer rely on exogenous supplementation of hormones for growth. This requirement leads to animal toxicity and mortality over time, limiting development and drug testing in these types of models. Efficacy of test agents, particularly endocrine therapies, may also be altered in these models due to excessive hormone exposure, highlighting the need to improve methods for the establishment and testing of ER+ breast models.
We have developed an alternative method of hormone supplementation in ER+ breast cancer models and optimized this method for testing of endocrine therapies. Using two cell-based breast models, we demonstrated improved breast tumor take and time to tumor volume endpoint while reducing animal toxicity and mortality associated with standard hormone supplementation. Subsequent studies identified the lowest effective dose (LED) of supplement for hormone dependent model growth with a preclinically relevant time to tumor volume endpoint. Activity of endocrine therapies including tamoxifen, letrozole, fulvestrant and exemestane were compared at the standard and LED hormone concentrations. In these studies tamoxifen treatment resulted in tumor regressions which was not appreciably improved using the LED dose of supplement. However letrozole activity was improved in the LED study suggesting hormone supplementation can impact activity of some agents. Using this process we also generated a panel of ER+ patient-derived xenograft (PDX) models, including two novel hormone therapy responsive models from chemo-naïve or hormone therapy pretreated patients, designated ST986 and ST2177, respectively.
This improved method of hormone supplementation diminishes the adverse effects of standard hormone supplementation and provides utility for development of anticancer therapies in ER+ breast models.
Citation Format: Wick MJ, Vaught T, Meade J, Gamez L, Farley M, Tolcher AW, Rasco D, Patnaik A, Drengler RL, Rosenthal A, Papadopoulos KP. Establishment and evaluation of ER+ breast cancer models using an optimized methodology for exogenous hormone delivery. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-03-05.
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Affiliation(s)
- MJ Wick
- START, San Antonio, TX; START Center, San Antonio, TX
| | - T Vaught
- START, San Antonio, TX; START Center, San Antonio, TX
| | - J Meade
- START, San Antonio, TX; START Center, San Antonio, TX
| | - L Gamez
- START, San Antonio, TX; START Center, San Antonio, TX
| | - M Farley
- START, San Antonio, TX; START Center, San Antonio, TX
| | - AW Tolcher
- START, San Antonio, TX; START Center, San Antonio, TX
| | - D Rasco
- START, San Antonio, TX; START Center, San Antonio, TX
| | - A Patnaik
- START, San Antonio, TX; START Center, San Antonio, TX
| | - RL Drengler
- START, San Antonio, TX; START Center, San Antonio, TX
| | - A Rosenthal
- START, San Antonio, TX; START Center, San Antonio, TX
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Rosenthal A, Luthi J, Belohlavek M, Kortüm KM, Mookadam F, Mayo A, Fonseca R, Bergsagel PL, Reeder CB, Mikhael JR, Stewart AK. Carfilzomib and the cardiorenal system in myeloma: an endothelial effect? Blood Cancer J 2016; 6:e384. [PMID: 26771810 PMCID: PMC4742629 DOI: 10.1038/bcj.2015.112] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [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: 10/13/2015] [Revised: 11/30/2015] [Accepted: 12/04/2015] [Indexed: 11/09/2022] Open
Abstract
Carfilzomib (Cfz) has been associated with an ~5% incidence of unexplained and unpredictable cardiovascular toxicity in clinical trials. We therefore implemented a detailed, prospective, clinical cardiac and renal evaluation of 62 Cfz-treated myeloma patients, including serial blood pressure (BP), creatinine, troponin, NT-proBNP and pre- and post-treatment echocardiograms, including ejection fraction (EF), average global longitudinal strain and compliance. Pre-treatment elevations in NT-proBNP and BP, as well as abnormal cardiac strain were common. A rise in NT-proBNP occurred frequently post-treatment often without corresponding cardiopulmonary symptoms. A rise in creatinine was common, lessened with hydration and often reversible. All patients had a normal EF pre-treatment. Five patients experienced a significant cardiac event (four decline in EF and one myocardial infarction), of which 2 (3.2%) were considered probably attributable to Cfz. None were rechallenged with Cfz. The ideal strategy for identifying patients at risk for cardiac events, and parameters by which to monitor for early toxicity have not been established; however, it appears baseline echocardiographic testing is not consistently predictive of toxicity. The toxicities observed suggest an endothelial mechanism and further clinical trials are needed to determine whether or not this represents a class effect or is Cfz specific.
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Affiliation(s)
- A Rosenthal
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - J Luthi
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - M Belohlavek
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - K M Kortüm
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - F Mookadam
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - A Mayo
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - R Fonseca
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - P L Bergsagel
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - C B Reeder
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - J R Mikhael
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
| | - A K Stewart
- Division of Hematology Oncology, Mayo Clinic Arizona, Scottsdale, AZ, USA
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Castañeda AR, Rosenthal A. Persistent abnormalities after repair of congenital heart defects. Ventricular septal defect and tetralogy of Fallot. Adv Cardiol 2015; 20:110-6. [PMID: 848382 DOI: 10.1159/000399859] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Henrique NA, Deliza R, Rosenthal A. Consumer Sensory Characterization of Cooked Ham Using the Check-All-That-Apply (CATA) Methodology. Food Eng Rev 2014. [DOI: 10.1007/s12393-014-9094-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Meads C, Sutton A, Małysiak S, Kowalska M, Zapalska A, Rogozinska E, Baldwin P, Rosenthal A, Ganesan R, Borowiack E, Barton P, Roberts T, Sundar S, Khan K. Sentinel lymph node status in vulval cancer: systematic reviews of test accuracy and decision-analytic model-based economic evaluation. Health Technol Assess 2014; 17:1-216. [PMID: 24331128 DOI: 10.3310/hta17600] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Vulval cancer causes 3-5% of all gynaecological malignancies and requires surgical removal and inguinofemoral lymphadenectomy (IFL). Complications affect > 50% of patients, including groin wound infection, lymphoedema and cellulitis. A sentinel lymph node (SLN) is the first groin node with the highest probability of malignancy. SLN biopsy would be useful if it could accurately identify patients in whom cancer has spread to the groin, without removing all groin nodes. SLNs can be identified by isosulfan blue dye and/or technetium-99 ((99m)Tc) radioactive tracer during lymphoscintigraphy. The blue dye/(99m)Tc procedure only detects SLN, not metastases - this requires histological examination, which can include ultrastaging and staining with conventional haematoxylin and eosin (H&E) or immunohistochemistry. OBJECTIVES To determine the test accuracy and cost-effectiveness of the SLN biopsy with (99m)Tc and/or blue dye compared with IFL or clinical follow-up for test negatives in vulval cancer, through systematic reviews and economic evaluation. DATA SOURCES Standard medical databases, including MEDLINE, EMBASE, Science Citation Index and The Cochrane Library, medical search gateways, reference lists of review articles and included studies were searched to January 2011. METHODS For accuracy and effectiveness, standard methods were used and reported according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Searches were to January 2011, with no language restrictions. Meta-analyses were carried out with Meta-Disc version 1.4 (Javier Zamora, Madrid, Spain) for accuracy; none was appropriate for effectiveness. The economic evaluation from a NHS perspective used a decision-tree model in DATA TreeAge Pro Healthcare 2001 (TreeAge Software, Inc., Williamstown, MA, USA). Six options (blue dye with H&E, blue dye with ultrastaging, (99m)Tc with H&E, (99m)Tc with ultrastaging, blue dye/(99m)Tc with H&E, blue dye/(99m)Tc with ultrastaging) were compared with IFL. Deterministic and probabilistic sensitivity analyses were conducted. RESULTS For accuracy, of the 26 included studies, most evaluated (99m)Tc/blue dye combined. Four studies had clinical follow-up only for test negatives and five had clinical follow-up for all and IFL for test negatives. Numbers with no SLN found were difficult to distinguish from those with negative SLN biopsies. The largest group of 11 studies using (99m)Tc/blue dye, ultrastaging and immunohistochemistry had a pooled sensitivity of 95.6% [95% confidence interval (CI) 91.5% to 98.1%] and a specificity of 100% (95% CI 99.0% to 100%). Mean SLN detection rates were 94.6% for (99m)Tc, 68.7% for blue dye and 97.7% for both. One study measured global health status quality of life (QoL) and found no difference between SLN biopsy and IFL. One patient preference evaluation showed that 66% preferred IFL rather than a 5% false-negative rate from SLN biopsy. For effectiveness, of 14,038 references, one randomised controlled trial, three case-control studies and 13 case series were found. Approximately 50% died from vulval cancer and 50% from other causes during follow-ups. Recurrences were in the ratio of approximately 4 : 2 : 1 vulval, groin and distant, with more recurrences in node-positive patients. No studies reported QoL. For cost per death averted, IFL was less costly and more effective than strategies using SLN biopsy. For morbidity-free survival and long-term morbidity-free survival, (99m)Tc with ultrastaging was most cost-effective. Strategies with blue dye only and H&E only were never cost-effective. The incremental cost-effectiveness ratio for (99m)Tc with ultrastaging compared with IFL was £4300 per case of morbidity-free survival and £7100 per long-term morbidity-free survival. LIMITATIONS The main limitations of this study include the lack of good-quality evidence on accuracy, effectiveness and QoL. A large project such as this takes time to publish, so the most recent studies are not included. CONCLUSIONS A sensitive and specific combined metastatic SLN detection test and information on generic QoL in vulval cancer is urgently required. FUNDING The National Institute for Health Research Health Technology Assessment programme.
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Affiliation(s)
- C Meads
- Centre for Primary Care and Public Health, Barts and The London School of Medicine and Dentistry, Queen Mary University of London Health Economics Research Group (HERG), Brunel University Unit of Health Economics, University of Birmingham Arcana Institute Departments of Gynaecology and Gynaecological Oncology, Addenbrooke's Hospital NHS Trust Department of Gynaecology, Barts Health NHS Trust Pan Birmingham Gynaecological Cancer Centre, Birmingham Women's Hospital NHS Foundation Trust, London Middlesex Birmingham Krakow Cambridge London Birmingham, UK UK UK Poland UK UK UK
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Silva-Angulo A, Zanini S, Rodrigo D, Rosenthal A, Martinez A. Growth kinetics of Listeria innocua and Listeria monocytogenes under exposure to carvacrol and the occurrence of sublethal damage. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.09.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Zanini SF, Silva-Angulo AB, Rosenthal A, Rodrigo D, Martínez A. Effect of citral and carvacrol on the susceptibility of Listeria monocytogenes and Listeria innocua to antibiotics. Lett Appl Microbiol 2014; 58:486-92. [PMID: 24443987 DOI: 10.1111/lam.12218] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 10/31/2013] [Revised: 01/09/2014] [Accepted: 01/09/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED The aim of this study was to evaluate the antibiotic susceptibility of Listeria innocua (L. innocua) and Listeria monocytogenes (L. monocytogenes) cells in the presence of citral and carvacrol at sublethal concentrations in an agar medium. The presence of terpenes in the L. monocytogenes and L. innocua culture medium provided a reduction in the minimal inhibitory concentration (MIC) of all the antibiotics tested. These effects were dependent on the concentration of terpenes present in the culture medium. The combination of citral and carvacrol potentiated antibiotic activity by reducing the MIC values of bacitracin and colistin from 32.0 and 128.0 μg ml⁻¹ to 1.0 and 2.0 μg ml⁻¹, respectively. Thus, both Listeria species became more susceptible to these drugs. In this way, the colistin and bacitracin resistance of L. monocytogenes and L. innocua was reversed in the presence of terpenes. Results obtained in this study show that the phytochemicals citral and carvacrol potentiate antibiotic activity, reducing the MIC values of cultured L. monocytogenes and L. innocua. SIGNIFICANCE AND IMPACT OF THE STUDY Phytochemicals citral and carvacrol potentiate antibiotic activity of erythromycin, bacitracin and colistin by reducing the MIC values of cultured Listeria monocytogenes and Listeria innocua. This effect in reducing the MIC values of the antibiotics tested in both micro-organisms was increased when natural antimicrobials were combined. This finding indicated that the combination among terpenes and antibiotic may contribute in reducing the required dosage of antibiotics due to the possible effect of terpenes on permeation barrier of the micro-organism cell membrane.
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Affiliation(s)
- S F Zanini
- Department of Veterinary Medicine, CNPq Postdoctoral Fellowship, Espirito Santo Federal University, Alegre, Brazil
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Abstract
The neurotrophin family is comprised of the structurally related secreted proteins nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT-3), and neurotrophine-4 (NT-4). They bind and activate the tyrosine kinase receptors Trk A, B, and C in a ligand-specific manner and additionally bind a shared p75NTR receptor. The neurotrophins were originally defined by their ability to support the survival and maturation of embryonic neurons. However, they also control important physiological functions of the adult nervous system including learning and memory, sensation, and energy homeostasis. For example, NGF/trkA signaling is critical for normal and pathological sensation of pain. Likewise, the BDNF/trkB pathway controls feeding and metabolism, and its dysfunction leads to severe obesity. Antibodies can modulate neurotrophin signaling. Thus, NGF blocking agents can attenuate pain in several animal models, and a recombinant humanized NGF blocking antibody (Tanezumab) has shown promising results in human clinical trials for osteoarthritic pain. On the other hand trkB agonist antibodies can modulate food intake and body weight in rodents and nonhuman primates. The power of monoclonal antibodies to modulate neurotrophin signaling promises to turn the rich biological insights into novel human medicines.
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Affiliation(s)
- A Rosenthal
- Alector Inc., 953 Indiana St., San Francisco, CA, 94107, USA,
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Phuan PW, Zhang H, Asavapanumas N, Leviten M, Rosenthal A, Tradtrantip L, Verkman AS. C1q-targeted monoclonal antibody prevents complement-dependent cytotoxicity and neuropathology in in vitro and mouse models of neuromyelitis optica. Acta Neuropathol 2013; 125:829-40. [PMID: 23677375 DOI: 10.1007/s00401-013-1128-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 11/26/2022]
Abstract
Neuromyelitis optica (NMO) is an autoimmune disorder with inflammatory demyelinating lesions in the central nervous system, particularly in the spinal cord and optic nerve. NMO pathogenesis is thought to involve binding of anti-aquaporin-4 (AQP4) autoantibodies to astrocytes, which causes complement-dependent cytotoxicity (CDC) and downstream inflammation leading to oligodendrocyte and neuronal injury. Vasculocentric deposition of activated complement is a prominent feature of NMO pathology. Here, we show that a neutralizing monoclonal antibody against the C1q protein in the classical complement pathway prevents AQP4 autoantibody-dependent CDC in cell cultures and NMO lesions in ex vivo spinal cord slice cultures and in mice. A monoclonal antibody against human C1q with 11 nM binding affinity prevented CDC caused by NMO patient serum in AQP4-transfected cells and primary astrocyte cultures, and prevented complement-dependent cell-mediated cytotoxicity (CDCC) produced by natural killer cells. The anti-C1q antibody prevented astrocyte damage and demyelination in mouse spinal cord slice cultures exposed to AQP4 autoantibody and human complement. In a mouse model of NMO produced by intracerebral injection of AQP4 autoantibody and human complement, the inflammatory demyelinating lesions were greatly reduced by intracerebral administration of the anti-C1q antibody. These results provide proof-of-concept for C1q-targeted monoclonal antibody therapy in NMO. Targeting of C1q inhibits the classical complement pathway directly and causes secondary inhibition of CDCC and the alternative complement pathway. As C1q-targeted therapy leaves the lectin complement activation pathway largely intact, its side-effect profile is predicted to differ from that of therapies targeting downstream complement proteins.
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Affiliation(s)
- Puay-Wah Phuan
- Departments of Medicine and Physiology, University of California, 1246 Health Sciences East Tower, San Francisco, CA 941143-0521, USA
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Mathias SP, Rosenthal A, Gaspar A, Aragão GMF, Slongo-Marcusi A. Prediction of acid lactic-bacteria growth in turkey ham processed by high hydrostatic pressure. Braz J Microbiol 2013; 44:23-8. [PMID: 24159279 PMCID: PMC3804173 DOI: 10.1590/s1517-83822013005000014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 09/18/2010] [Accepted: 08/22/2012] [Indexed: 11/22/2022] Open
Abstract
High hydrostatic pressure (HHP) has been investigated and industrially applied to extend shelf life of meat-based products. Traditional ham packaged under microaerophilic conditions may sometimes present high lactic acid bacteria population during refrigerated storage, which limits shelf life due to development of unpleasant odor and greenish and sticky appearance. This study aimed at evaluating the shelf life of turkey ham pressurized at 400 MPa for 15 min and stored at 4, 8 and 12 °C, in comparison to the non pressurized product. The lactic acid bacteria population up to 10(7) CFU/g of product was set as the criteria to determine the limiting shelf life According to such parameter the pressurized sample achieved a commercial viability within 75 days when stored at 4 °C while the control lasted only 45 days. Predictive microbiology using Gompertz and Baranyi and Roberts models fitted well both for the pressurized and control samples. The results indicated that the high hydrostatic pressure treatment greatly increased the turkey ham commercial viability in comparison to the usual length, by slowing down the growth of microorganisms in the product.
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Affiliation(s)
- S P Mathias
- Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
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Rosenthal A, Ramalingam K, Beckmann K, Deur A, Fillos J. Experimental evaluation of the nitrite sensitivity coefficient in granular anammox biomass. Water Sci Technol 2013; 68:2103-2110. [PMID: 24225115 DOI: 10.2166/wst.2013.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nitrite is widely reported to inhibit anammox activity and growth. One modeling approach for nitrite impairment of anammox growth is the use of a nitrite sensitivity coefficient which increases the endogenous decay coefficient of anammox bacteria proportionally to nitrite concentration. The objective of this study was to measure nitrite concentration profiles within active anammox granules incubated at fixed bulk nitrite concentrations and to compare these with nitrite concentration profiles predicted by a biofilm model that incorporates the nitrite sensitivity coefficient. We developed an apparatus for the repeated measurement of nitrite concentration profiles along the radius of granular anammox biomass over a period of 6 days at fixed bulk nitrite concentrations. Granular anammox biomass was obtained from a two-stage bench-scale partial nitritation/anammox reactor system. There was no apparent effect of nitrite concentration on nitrite utilization kinetics after 6 days at exposures up to 90 mg NO(2)(-)-N/L. These findings suggest that anammox bacteria tolerate extended exposures to elevated nitrite concentrations, and in its present form, the nitrite sensitivity coefficient is not applicable for anammox growth modeling.
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Affiliation(s)
- A Rosenthal
- Department of Civil Engineering, The City College of New York, 160 Convent Avenue, New York, NY, 10031, USA E-mail:
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Rosenthal A, Stutzman H, Forsyth A. Creating Mosaic-Based Conservation Corridors to Respond to Major Threats in the Amazon Headwaters. ECOL RESTOR 2012. [DOI: 10.3368/er.30.4.296] [Citation(s) in RCA: 6] [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: 11/03/2022]
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Wright S, DeBoer E, Rosenthal A, Flavell RA, Grosveld F. Notice of redundant publicationDNA sequences required for regulated expression of β-globin genes in murine erythroleukaemia cells. Philos Trans R Soc Lond B Biol Sci 2012. [DOI: 10.1098/rstb.2012.0385] [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: 11/12/2022] Open
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Wick M, Vaught T, Kelly S, Farley M, Tolcher A, Rosenthal A, Rodriguez L, Beeram M, Lang A, Papadopoulos K. 56 Establishment, Characterization and Evaluation of a Panel of Patient-derived Low Passage Breast Tumor Models. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71854-3] [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: 10/27/2022]
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Reinhart S, Schmidt L, Kuhn C, Rosenthal A, Schenk T, Keller I, Kerkhoff G. Limb activation ameliorates body-related deficits in spatial neglect. Front Hum Neurosci 2012; 6:188. [PMID: 22737118 PMCID: PMC3381448 DOI: 10.3389/fnhum.2012.00188] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 12/14/2011] [Accepted: 06/07/2012] [Indexed: 11/13/2022] Open
Abstract
Many neglect patients show deficits in the mental representation of their contralesional body side or body parts, termed personal neglect. These deficits include impairments in identifying body parts on schematic drawings of human bodies. Limb activation and alertness cues have been shown to modulate neglect transiently, and are effective treatments for several symptoms of the neglect syndrome. Here, we tested on eight patients with right-hemispheric stroke and left-sided spatial neglect whether these two techniques modulate deficits in the mental representation of hands, assessed with a hand-test in which the subjects had to decide whether a depicted schematic hand belongs to the left or right side of the human body. The results showed that neglect patients made marginally significant (p = 0.065) more errors in left-hand-decisions than right-hand-decisions, indicating a neglect-specific disorder. Moreover, we found that left-sided limb activation but not non-lateralized alertness cueing (a loud noise immediately before patients made their perceptual decision) significantly reduced misidentifications for depicted left hands as compared to baseline. No effect of any intervention was observed on error rates for depicted right hands. We conclude that the amelioration of the performance in the hand task is modulated by the activation of the body schema or other body representations through left-sided limb activation.
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Affiliation(s)
- S Reinhart
- Clinical Neuropsychology Unit and Outpatient Service, Saarland University Saarbruecken, Germany
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Kuhn C, Bublak P, Jobst U, Rosenthal A, Reinhart S, Kerkhoff G. Contralesional spatial bias in chronic hemianopia: the role of (ec)centric fixation, spatial cueing and visual search. Neuroscience 2012; 210:118-27. [DOI: 10.1016/j.neuroscience.2012.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 03/07/2012] [Accepted: 03/09/2012] [Indexed: 11/26/2022]
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