1
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Choi SW, Sun AK, Cheung JPY, Ho JCY. Circulating Tumour Cells in the Prediction of Bone Metastasis. Cancers (Basel) 2024; 16:252. [PMID: 38254743 PMCID: PMC10813668 DOI: 10.3390/cancers16020252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 01/24/2024] Open
Abstract
Bone is the most common organ for the development of metastases in many primary tumours, including those of the breast, prostate and lung. In most cases, bone metastasis is incurable, and treatment is predominantly palliative. Much research has focused on the role of Circulating Tumour Cells (CTCs) in the mechanism of metastasis to the bone, and methods have been developed to isolate and count CTCs from peripheral blood. Several methods are currently being used in the study of CTCs, but only one, the CellSearchTM system has been approved by the United States Food and Drug Administration for clinical use. This review summarises the advantages and disadvantages, and outlines which clinical studies have used these methods. Studies have found that CTC numbers are predictive of bone metastasis in breast, prostate and lung cancer. Further work is required to incorporate information on CTCs into current staging systems to guide treatment in the prevention of tumour progression into bone.
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Affiliation(s)
- Siu-Wai Choi
- Department of Orthopaedics and Tramatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Aria Kaiyuan Sun
- Department of Anaesthesiology, School of Clinical Medicine, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China; (A.K.S.); (J.C.-Y.H.)
| | - Jason Pui-Yin Cheung
- Department of Orthopaedics and Tramatology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jemmi Ching-Ying Ho
- Department of Anaesthesiology, School of Clinical Medicine, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China; (A.K.S.); (J.C.-Y.H.)
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2
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Li T, Jing H, Zhang Y, Cao Z, Zhao L, Zhang X, Sun T, Zhang M. Prognostic impact of colorectal cancer patients with bone metastases: a single-center experience. Updates Surg 2023; 75:2245-2256. [PMID: 37976001 DOI: 10.1007/s13304-023-01696-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 10/27/2023] [Indexed: 11/19/2023]
Abstract
The incidence of bone metastasis (BM) in colorectal cancer (CRC) patients is low and the prognosis is poor. There is no clear conclusion on the risk factors affecting the survival of CRC patients with BM. The aim of this study was to investigate the factors that may affect the prognosis of CRC patients with BM. The clinical and pathological data of CRC patients with BM were retrospectively analyzed. The overall survival after BM diagnosis was estimated using the Kaplan-Meier method and Log-rank test, and a multivariable cox regression model was used to identify the prognostic factors of overall survival. This study included 178 CRC patients with BM, of whom 151 had left-sided CRC and 27 had right-sided colon cancer. 1124 CRC patients with BM from the SEER database were included to perform a sensitivity analysis of the primary outcome. Multivariate analysis showed that the N staging, site of BM, and primary tumor sidedness (PTS) were independent prognostic factors for CRC with BM. Among them, right-sided colon cancer patients with BM had a poorer prognosis. Sensitivity analyses showed that PTS was an independent prognostic factor in CRC patients with BM. Primary tumor sidedness and N stage may be potential prognostic markers for BM of CRC. The prognosis of N0 stage CRC with BM is better, while the prognosis of right-sided colon cancer is poor.
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Affiliation(s)
- Tianhao Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
- Tianjin Institute of Coloproctology, Tianjin, China
| | - Haoren Jing
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
- Tianjin Institute of Coloproctology, Tianjin, China
| | - Yongdan Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
- Tianjin Institute of Coloproctology, Tianjin, China
| | - Zegang Cao
- Department of Spinal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
| | - Lizhong Zhao
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
- Tianjin Institute of Coloproctology, Tianjin, China
| | - Xipeng Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China
- Tianjin Institute of Coloproctology, Tianjin, China
- The Institute of Translational Medicine, Tianjin Union Medical Center of Nankai University, Tianjin, China
- Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Tianwei Sun
- Department of Spinal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China.
| | - Mingqing Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, 2755-7131, China.
- Tianjin Institute of Coloproctology, Tianjin, China.
- The Institute of Translational Medicine, Tianjin Union Medical Center of Nankai University, Tianjin, China.
- Nankai University School of Medicine, Nankai University, Tianjin, China.
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3
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Einarsdottir FH, Gunnarsdottir ELT, Gunnarsdottir SLX, Jensen EM, Viktorsson SA, Ingvarsdottir IL, Larusdottir KJ, Heitmann LA, Gudbjartsson T. [The effect of obesity on the outcome of surgical aortic valve replacement for aortic stenosis]. LAEKNABLADID 2023; 109:235-242. [PMID: 37166092 DOI: 10.17992/lbl.2023.05.743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023] Open
Abstract
INTRODUCTION Our objective was to investigate the effect of obesity on short-term complications and long-term survival after surgical aortic valve replacement (SAVR) for aortic stenosis (AS). MATERIAL AND METHODS A retrospective study on 748 patients who underwent SAVR for AS in Iceland 2003-2020. Patients were divided into groups based on body mass index (BMI): normal (18.5-24.9 kg/m2, n=190), overweight (25-29.9 kg/m2, n=339), obese (30-34.9 kg/m2, n=165) and severely obese (≥35 kg/m2, n=54). Six patients with BMI p<18,5 kg/m2 were excluded. Clinical information regarding patient history, risk factors, together with complications and 30-day mortality were collected from patient records. The four BMI groups were compared and long-term survival estimated with Kaplan-Meier plots and risk factors for long-term survival evaluated with Cox multivariate analysis. RESULTS Severely obese patients were on average four years younger than patients with normal BMI, more often had risk factors for cardiovascular disease, and their EuroSCORE II was higher (5.3 vs. 4.4%, p=0.03). On the other hand, severely obese patients bled less the first 24 hours post-surgery, compared to normal BMI-patients (558 vs. 1091 ml, p<0.001), stroke was less frequent (0 vs 6.4%, p=0.03), but they more often experienced sternum dehiscence (5.6 vs 2.7%, p=0.04), deep sternal wound infection (3.7 vs 0%, p=0.04) and acute kidney injury (26.4 vs 15.2%, p=0.005). Thirty-day mortality and long-term survival did not differ significantly between the groups and BMI was not an independent predictor of long-term survival in multivariate analysis. CONCLUSIONS The outcome for obese patients undergoing SAVR for AS is good and both short-term complications and long-term survival do not differ significantly from patients with a normal BMI. Therefore, a high BMI itself should not be a contraindication for SAVR due to AS.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Tomas Gudbjartsson
- Faculty of Medicine, University of Iceland. 2Department of Cardiothoracic Surgery, Landspitali University Hospital
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4
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Kouroukli O, Symeonidis A, Foukas P, Maragkou MK, Kourea EP. Bone Marrow Immune Microenvironment in Myelodysplastic Syndromes. Cancers (Basel) 2022; 14:cancers14225656. [PMID: 36428749 PMCID: PMC9688609 DOI: 10.3390/cancers14225656] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
The BM, the major hematopoietic organ in humans, consists of a pleiomorphic environment of cellular, extracellular, and bioactive compounds with continuous and complex interactions between them, leading to the formation of mature blood cells found in the peripheral circulation. Systemic and local inflammation in the BM elicit stress hematopoiesis and drive hematopoietic stem cells (HSCs) out of their quiescent state, as part of a protective pathophysiologic process. However, sustained chronic inflammation impairs HSC function, favors mutagenesis, and predisposes the development of hematologic malignancies, such as myelodysplastic syndromes (MDS). Apart from intrinsic cellular mechanisms, various extrinsic factors of the BM immune microenvironment (IME) emerge as potential determinants of disease initiation and evolution. In MDS, the IME is reprogrammed, initially to prevent the development, but ultimately to support and provide a survival advantage to the dysplastic clone. Specific cellular elements, such as myeloid-derived suppressor cells (MDSCs) are recruited to support and enhance clonal expansion. The immune-mediated inhibition of normal hematopoiesis contributes to peripheral cytopenias of MDS patients, while immunosuppression in late-stage MDS enables immune evasion and disease progression towards acute myeloid leukemia (AML). In this review, we aim to elucidate the role of the mediators of immune response in the initial pathogenesis of MDS and the evolution of the disease.
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Affiliation(s)
- Olga Kouroukli
- Department of Pathology, University Hospital of Patras, 26504 Patras, Greece
| | - Argiris Symeonidis
- Hematology Division, Department of Internal Medicine, School of Medicine, University of Patras, 26332 Patras, Greece
| | - Periklis Foukas
- 2nd Department of Pathology, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens, 12462 Athens, Greece
| | - Myrto-Kalliopi Maragkou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 54124 Thessaloniki, Greece
| | - Eleni P. Kourea
- Department of Pathology, School of Medicine, University of Patras, 26504 Patras, Greece
- Correspondence: ; Tel.: +30-2610-969191
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5
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Baron F, Labopin M, Tischer J, Ciceri F, Raiola AM, Blaise D, Sica S, Vydra J, Fanin R, Stölzel F, Busca A, Diez-Martin JL, Koc Y, Nagler A, Mohty M. HLA-haploidentical transplantation for relapsed/refractory AML: better LFS with BM than with PBSC in patients ≥ 55 years of age. Am J Hematol 2022; 97:1065-1074. [PMID: 35696192 DOI: 10.1002/ajh.26627] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/24/2022] [Accepted: 06/01/2022] [Indexed: 11/12/2022]
Abstract
The best stem cell source for T-cell replete HLA-haploidentical transplantation with post-transplant cyclophosphamide (PTCy) remains to be determined. In this EBMT retrospective study we analyzed the impact of stem cell source on leukemia-free survival (LFS) in adult patients with primary refractory or relapsed acute myeloid leukemia (AML) given grafts from HLA-haploidentical donors with PTCy as graft-versus-host disease (GVHD) prophylaxis. A total of 668 patients (249 bone marrow (BM) and 419 peripheral blood stem cells (PBSC) recipients) met the inclusion criteria. The use of PBSC was associated with a higher incidence of grade II-IV (HR = 1.59, P = 0.029) and grade III-IV (HR = 2.08, P = 0.013) acute GVHD. There was a statistical interaction between patient age and the impact of stem cell source for LFS (P < 0.01). In multivariate Cox models, among patients <55 years, the use of PBSC versus BM resulted in comparable LFS (HR = 0.82, P = 0.2). In contrast, in patients ≥55 years of age, the use of PBSC versus BM was associated with higher non-relapse mortality (NRM) (HR = 1.7, P = 0.01), lower LFS (HR = 1.37, P = 0.026) and lower overall survival (OS) (HR = 1.33, P = 0.044). In conclusions, our data suggest that in patients ≥55 years of age with active AML at HLA-haploidentical transplantation, the use of BM instead of PBSC as stem cell source results in lower NRM and better LFS. In contrast among younger patients, the use of PBSC results in at least a comparable LFS. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Frédéric Baron
- Laboratory of Hematology, GIGA-I3, University of Liege and CHU of Liège, Liege, Belgium
| | - Myriam Labopin
- EBMT Paris study office/CEREST-TC, Paris, France.,Department of Hematology, Saint Antoine Hospital, Paris, France.,INSERM UMR 938, Paris, France.,Université Pierre et Marie Curie, Paris, France
| | | | - Fabio Ciceri
- Ospedale San Raffaele s.r.l., Haematology and BMT, Milan, Italy
| | | | - Didier Blaise
- Programme de Transplantation&Therapie Cellulaire, Centre de Recherche en Cancérologie de Marseille, Institut Paoli Calmettes, Marseille, France
| | - Simona Sica
- Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.,Sezione di Ematologia, Dipartimento di Scienze Radiologiche ed Ematologiche, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Jan Vydra
- Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Renato Fanin
- Azienda Ospedaliero Universitaria di Udine, Division of Hematology, Udine, Italy
| | | | - Alessandro Busca
- SSCVD Trapianto di Cellule Staminali, AOU Citta della Salute e della Scienza di Torino, Torino, Italy
| | | | - Yener Koc
- Medicana International Hospital Istanbul, Bone Marrow Transplant Unit, Istanbul, Turkey
| | - Arnon Nagler
- Division of Hematology and Bone Marrow Transplantation, The Chaim Sheba Medical Center, Tel-Hashomer, Ramat-Gan, Israel
| | - Mohamad Mohty
- EBMT Paris study office/CEREST-TC, Paris, France.,Department of Hematology, Saint Antoine Hospital, Paris, France.,INSERM UMR 938, Paris, France.,Université Pierre et Marie Curie, Paris, France
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6
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Wang Y, Chen R, Wa Y, Ding S, Yang Y, Liao J, Tong L, Xiao G. Tumor Immune Microenvironment and Immunotherapy in Brain Metastasis From Non-Small Cell Lung Cancer. Front Immunol 2022; 13:829451. [PMID: 35251014 PMCID: PMC8891382 DOI: 10.3389/fimmu.2022.829451] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 01/31/2022] [Indexed: 01/01/2023] Open
Abstract
Brain metastasis (BM), a devastating complication of advanced malignancy, has a high incidence in non-small cell lung cancer (NSCLC). As novel systemic treatment drugs and improved, more sensitive imaging investigations are performed, more patients will be diagnosed with BM. However, the main treatment methods face a high risk of complications at present. Therefore, based on immunotherapy of tumor immune microenvironment has been proposed. The development of NSCLC and its BM is closely related to the tumor microenvironment, the surrounding microenvironment where tumor cells live. In the event of BM, the metastatic tumor microenvironment in BM is composed of extracellular matrix, tissue-resident cells that change with tumor colonization and blood-derived immune cells. Immune-related cells and chemicals in the NSCLC brain metastasis microenvironment are targeted by BM immunotherapy, with immune checkpoint inhibition therapy being the most important. Blocking cancer immunosuppression by targeting immune checkpoints provides a suitable strategy for immunotherapy in patients with advanced cancers. In the past few years, several therapeutic advances in immunotherapy have changed the outlook for the treatment of BM from NSCLC. According to emerging evidence, immunotherapy plays an essential role in treating BM, with a more significant safety profile than others. This article discusses recent advances in the biology of BM from NSCLC, reviews novel mechanisms in diverse tumor metastatic stages, and emphasizes the role of the tumor immune microenvironment in metastasis. In addition, clinical advances in immunotherapy for this disease are mentioned.
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Affiliation(s)
- Yuchang Wang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Rui Chen
- Department of Neurosurgery, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Yue Wa
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Shikuan Ding
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yijian Yang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Junbo Liao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Lei Tong
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Gelei Xiao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,Diagnosis and Treatment Center for Hydrocephalus, Xiangya Hospital, Central South University, Changsha, China.,Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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7
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Abstract
Purpose To characterize the risk factors for brain metastasis (BM) at presentation and analyze the prognostic factors for patients with small cell lung cancer (SCLC). Patients and Methods Patients were recruited from the SEER database between 2010 and 2016. They were divided into two groups according to BM status. The incidence trends of SCLC and its BM were analyzed by joinpoint software. The risk factors for BM in SCLC were identified by binary logistic regression models. The prognostic factors for SCLC patients with BM were identified by Cox proportional hazard models. Results The incidence of SCLC and its BM significantly decreased after 2010. Totally 11,093 patients were collected, including 1717 (15.5%) patients with BM and 9376 (84.5%) patients without BM. In multivariate logistic regression analysis, age, male and higher T stage were independent risk factors for BM in SCLC patients at presentation. SCLC patients with BM showed inferior survival to those without BM. In multivariate Cox regression analysis, increasing age, large tumor size, and higher N stage were risk factors for poor prognosis, while other race, surgery, adjuvant radiotherapy, and chemotherapy were protective factors for SCLC patients with BM. A nomogram was developed for prognosis evaluation of such patients. Conclusion Age, male and higher T stage were risk factors for BM in SCLC patients at presentation. Increasing age, large tumor size, and advanced N stage may predict poor survival for SCLC patients with BM. Multidisciplinary therapies may provide clinical benefits. This study will help identify patients with higher BM risk and hopefully improve their clinical outcome.
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Affiliation(s)
- Na Li
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Yuxin Chu
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Qibin Song
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
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8
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Khan M, Zhao Z, Li X, Liao G. Anti-PD1 Therapy Plus Whole-Brain Radiation Therapy May Prolong PFS in Selected Non-Small Cell Lung Cancer Patients with Brain Metastases: A Retrospective Study. Int J Gen Med 2021; 14:8903-8918. [PMID: 34858054 PMCID: PMC8631977 DOI: 10.2147/ijgm.s333890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/06/2021] [Indexed: 12/17/2022] Open
Abstract
Background Whole-brain radiotherapy (WBRT) remains an essential modality of treatment for brain metastases (BMs) derived from non-small cell lung cancer (NSCLC) patients and anti-PD-1 therapy has demonstrated intracranial responses in these patients. We aimed to evaluate if the combination of the two treatments could yield additive efficacy. Methods A retrospective review of our institution’s database was carried out to identify NSCLC patients with BMs who had been treated with anti-PD1 therapy and/or WBRT between 2015 and 2020. Patient characteristics, main outcomes, including progression-free survival (PFS) and overall survival (OS), and factors affecting these outcomes were analyzed. SPSS 24 was used for statistical analysis. Appropriate statistical tests were employed according to the type of data. Results Overall, 21 NSCLC BM patients were identified that had received WBRT. Of these, ten had been additionally treated with anti-PD1 therapy within 30 days of WBRT initiation. Median PFS was 3 (95% CI 0.8–5.1) months with WBRT alone versus 11 (95% CI 6.3–15.6) months with combined treatment. Risk of disease progression was 71% lower with the combined approach (HR 0.29, 95% CI 0.11–0.80; p=0.016). A trend toward improved OS was also observed with the combined approach (HR 0.33, 95% CI 0.08–1.12; p=0.107). Concurrent treatment (p=0.028) and male sex (p=0.052) were associated with improved PFS, while OS was associated only with age (p=0.02). Conclusion Concurrent WBRT and anti-PD1 therapy may delay progression and improve survival in BM patients with confirmed EGFR- and ALK-negative NSCLC histology. Prospective studies are warranted to validate and elucidate on the additive effect of the two modalities.
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Affiliation(s)
- Muhammad Khan
- Department of Oncology, Shenzhen People's Hospital, First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China.,Department of Oncology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
| | - Zhihong Zhao
- Department of Nephrology, Shenzhen People's Hospital, Second Clinical Medicine Centre, Jinan University, Shenzhen, People's Republic of China
| | - Xianming Li
- Department of Oncology, Shenzhen People's Hospital, First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China
| | - Guixiang Liao
- Department of Oncology, Shenzhen People's Hospital, First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, People's Republic of China
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9
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Abstract
The eye is regarded as an immune privileged site. Since the presence of a vasculature would impair vision, the vasculature of the eye is located outside of the central light path. As a result, many regions of the eye evolved mechanisms to deliver immune cells to sites of dysgenesis, injury, or in response to the many age-related pathologies. While the purpose of these immune responses is reparative or protective, cytokines released by immune cells compromise visual acuity by inducing inflammation and fibrosis. The response to traumatic or pathological injury is distinct in different regions of the eye. Age-related diseases impact both the anterior and posterior segment and lead to reduced quality of life and blindness. Here we focus attention on the role that inflammation and fibrosis play in the progression of age-related pathologies of the cornea and the lens as well as in glaucoma, the formation of epiretinal membranes, and in proliferative vitreoretinopathy.
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Key Words
- 2ryERM
- A T-helper cell that expresses high levels of IL-17 which can suppress T-regulatory cell function
- A cytokine expressed early during inflammation that attracts neutrophils
- A cytokine expressed early during inflammation that attracts neutrophils, sometimes referred to as monocyte chemoattractant protein-1 (MCP-1))
- A mouse model that lacks functional T and B cells and used to study the immune response
- A pigmented mouse strain used for research and known to mount a primarily Th1 response to infection
- A protein encoded by the ADGRE1 gene that, in mice, is expressed primarily on macrophages
- A strain of pigmented mice used in glaucoma research
- ACAID
- APCs
- ASC
- An albino mouse strain used for research and known to mount a primarily Th2 response to infection
- Antigen Presenting Cells, this class includes dendritic cells and monocytes
- BALB/c
- BM
- C57BL6
- CCL2
- CD45
- CNS
- CXCL1
- Central Nervous System
- Cluster of differentiation 45 antigen
- DAMPs
- DBA/2J
- EBM
- ECM
- EMT
- ERM
- Epithelial Basement Membrane
- F4/80
- FGF2
- HA =hyaluronic acid
- HSK
- HSP
- HSPGs
- HSV
- ICN
- IL-20
- IL6
- ILM
- IOP
- Inner (or internal) limiting membrane
- Interleukin 6
- Interleukin-20
- MAGP1
- MHC-II
- Major histocompatibility complex type II, a class of MHC proteins typically found only on APCs
- Microfibril-associated glycoprotein 1
- N-cad
- N-cadherin
- NEI
- NK
- National Eye Institute
- Natural killer T cells
- PCO
- PDGF
- PDR
- PVD
- PVR
- Platelet derived growth factor
- Posterior capsular opacification
- RGC
- RPE
- RRD
- Rag1-/-
- Retinal ganglion cells
- Retinal pigment epithelial cells
- SMAD
- Sons of Mothers Against Decapentaplegic, SMADs are a class of molecules that mediate TGF and bone morphogenetic protein signaling
- T-helper cell 1 response, proinflammatory adaptive response involving interferon gamma and associated with autoimmunity
- T-helper cell 2 response involving IgE and interleukins 4,5, and 13, also induces the anti-inflammatory interleukin 10 family cytokines
- T-regulatory cell
- TG
- TGF1
- TM
- TNF
- Th1
- Th17
- Th2
- Transforming growth factor 1
- Treg
- Tumor necrosis factor a cytokine produced during inflammation
- VEGF
- Vascular endothelial growth factor
- WHO
- World Health Organization
- anterior chamber immune deviation
- anterior subcapsular cataracts
- basement membrane
- damage-associated molecular patterns
- epiretinal membrane
- epiretinal membrane secondary to disease pathology
- epithelial-mesenchymal transition
- extracellular matrix
- fibroblast growth factor 2, also referred to as basic FGF
- heat shock protein
- heparan sulfate proteoglycans
- herpes simplex virus
- herpes stromal keratitis
- iERM
- idiopathic epiretinal membrane
- intraepithelial corneal nerves
- intraocular pressure
- mTOR
- mechanistic target of rapamycin, a protein kinase encoded by the MTOR genes that regulates a variety of signal transduction events including cell growth, autophagy and actin cytoskeleton
- posterior vitreous detachment
- proliferative diabetic retinopathy
- proliferative vitreoretinopathy
- rhegmatogenous (rupture, tear) retinal detachment
- trabecular meshwork
- trigeminal ganglion
- αSMA
- α−Smooth muscle actin, a class of actin expressed in mesenchymal cells
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10
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Chiva-Blanch G, Peña E, Cubedo J, García-Arguinzonis M, Pané A, Gil PA, Perez A, Ortega E, Padró T, Badimon L. Molecular mapping of platelet hyperreactivity in diabetes: the stress proteins complex HSPA8/Hsp90/CSK2α and platelet aggregation in diabetic and normal platelets. Transl Res 2021; 235:1-14. [PMID: 33887528 DOI: 10.1016/j.trsl.2021.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 11/15/2022]
Abstract
The molecular understanding of the pathophysiological changes elicited by diabetes in platelets may help in further elucidating the involvement of this pseudo-cell in the increased risk of developing cardiovascular disease and thrombosis in diabetic subjects. We aimed to investigate the differential characteristics of platelets from diabetic patients and nondiabetic controls to unveil the molecular mechanisms behind the increased platelet reactivity in diabetes. We compared platelets from diabetic and control subjects by 2 dimensional-electrophoresis followed by mass spectrometry. Changes in selected differential proteins were validated by immunoprecipitation assays and western blot. Platelet aggregation was measured by light transmittance aggregometry induced by collagen and ADP, and dynamic coagulation analysis of whole blood was measured by thromboelastometry. We observed significant differences in proteins related to platelet aggregation, cell migration, and cell homeostasis. Subjects with diabetes showed higher platelet aggregation and thrombogenicity and higher contents of the stress-related protein complex HSPA8/Hsp90/CSK2α than nondiabetic subjects. Changes in the chaperones HSPA8 and Hsp90, and in CSK2α protein contents correlated with changes in platelet aggregation and blood coagulation activity. In conclusion, the complex HSPA8/Hsp90/CSK2α is involved in diabetes-related platelet hyperreactivity. The role of the HSPA8/Hsp90/CSK2α complex may become a molecular target for the development of future preventive and therapeutic strategies for platelet dysfunction associated with diabetes and its complications.
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Affiliation(s)
- Gemma Chiva-Blanch
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain; Endocrinology and Nutrition Department, Institut d'Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
| | - Esther Peña
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Judit Cubedo
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain
| | - Maisa García-Arguinzonis
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain
| | - Adriana Pané
- Endocrinology and Nutrition Department, Institut d'Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain
| | - Pedro A Gil
- Endocrinology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Antonio Perez
- Endocrinology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Emilio Ortega
- Endocrinology and Nutrition Department, Institut d'Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Teresa Padró
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Lina Badimon
- Cardiovascular Program ICCC, Institut de Recerca Hospital Santa Creu i Sant Pau-IIB Sant Pau, Barcelona, Spain; Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV), Instituto de Salud Carlos III (ISCIII), Madrid, Spain.
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11
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Mehfooz N, Siraj F, Shabir A, Mantoo S, Shah TH, Hafiz U, Qadri M, Shah S, Jan R, Koul PA. Spirometric abnormalities in patients with sleep-related breathing disorders. J Family Med Prim Care 2021; 10:1009-1014. [PMID: 34041113 PMCID: PMC8138423 DOI: 10.4103/jfmpc.jfmpc_1018_20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/09/2020] [Accepted: 09/20/2020] [Indexed: 11/10/2022] Open
Abstract
Introduction: Patients with sleep-related breathing disorders (SRBD) have various structural and functional abnormalities of the upper airway during sleep which may get reflected on their pulmonary function tests. The aim of the study was to find the correlation between the spirometric indices and snoring, grades of apnea–hypoapnea index (AHI), and STOPBANG. There is scarcity of literature showing correlation of STOP BANG with spirometric variables. Material and Methods: Patient with SRBD fulfilling the inclusion and exclusion criteria were enrolled. The pretest probability sleep score STOPBANG and polysomnography (PSG) were calculated for all the patients. Spirometric indices like forced expiratory volume in one sec (FEV1), forced vital capacity (FVC), postbronchodilator ratio FEVI/FVC (PBDR), and peak expiratory flow rate (PEFR) were studied. Their association with snoring, different grades of obstructive sleep apnea (OSA), and STOPBANG were evaluated using statistical analysis. Results: A total of 70 patients were enrolled. Abnormalities of spirometric indices were found to be common in patients with SRBD but their association with snoring, grades of OSA, and STOPBANG were not statistically significant. There is no statistically significant correlation between body mass index (BMI) and grades of AHI. Conclusion: This study found no statistically significant correlation between spirometric parameters and STOPBANG and degree of AHI. Primary care physicians should be aware that obstructive lung disease does coexist with the sleep disordered breathing but as per this study, their statistically significant association needs further validation.
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Affiliation(s)
- Nazia Mehfooz
- Department of Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Farhana Siraj
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Afshan Shabir
- Department of Geriatrics, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Suhail Mantoo
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Tajamul Hussain Shah
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Umar Hafiz
- Department of Geriatrics, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Mudasir Qadri
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Sanaullah Shah
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Rafi Jan
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
| | - Parvaiz A Koul
- Department of Internal and Pulmonary Medicine, Sheri-Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
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12
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Müller S, Köhler F, Hendricks A, Kastner C, Börner K, Diers J, Lock JF, Petritsch B, Germer CT, Wiegering A. Brain Metastases from Colorectal Cancer: A Systematic Review of the Literature and Meta-Analysis to Establish a Guideline for Daily Treatment. Cancers (Basel) 2021; 13:900. [PMID: 33669974 PMCID: PMC7924831 DOI: 10.3390/cancers13040900] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 02/01/2023] Open
Abstract
Colorectal cancer (CRC) is the third most common malignancy worldwide. Most patients with metastatic CRC develop liver or lung metastases, while a minority suffer from brain metastases. There is little information available regarding the presentation, treatment, and overall survival of brain metastases (BM) from CRC. This systematic review and meta-analysis includes data collected from three major databases (PubMed, Cochrane, and Embase) based on the key words "brain", "metastas*", "tumor", "colorectal", "cancer", and "malignancy". In total, 1318 articles were identified in the search and 86 studies matched the inclusion criteria. The incidence of BM varied between 0.1% and 11.5%. Most patients developed metastases at other sites prior to developing BM. Lung metastases and KRAS mutations were described as risk factors for additional BM. Patients with BM suffered from various symptoms, but up to 96.8% of BM patients were asymptomatic at the time of BM diagnosis. Median survival time ranged from 2 to 9.6 months, and overall survival (OS) increased up to 41.1 months in patients on a multimodal therapy regimen. Several factors including age, blood levels of carcinoembryonic antigen (CEA), multiple metastases sites, number of brain lesions, and presence of the KRAS mutation were predictors of OS. For BM diagnosis, MRI was considered to be state of the art. Treatment consisted of a combination of surgery, radiation, or systemic treatment.
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Affiliation(s)
- Sophie Müller
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Franziska Köhler
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Anne Hendricks
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Carolin Kastner
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Kevin Börner
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Johannes Diers
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Johan F. Lock
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
| | - Bernhard Petritsch
- Department of Radiology, University Hospital Wuerzburg, 97084 Wuerzburg, Germany;
| | - Christoph-Thomas Germer
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
- Comprehensive Cancer Centre Mainfranken, University of Wuerzburg, 97084 Wuerzburg, Germany
| | - Armin Wiegering
- Department of General, University Hospital Wuerzburg, Visceral, Transplant, Vascular and Paediatric Surgery, 97084 Wuerzburg, Germany; (S.M.); (F.K.); (A.H.); (C.K.); (K.B.); (J.D.); (J.F.L.); (C.-T.G.)
- Comprehensive Cancer Centre Mainfranken, University of Wuerzburg, 97084 Wuerzburg, Germany
- Theodor Boveri Institute, Biocenter, University of Wuerzburg, 97084 Wuerzburg, Germany
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13
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Al-Sabbagh A, Ibrahim F, Szabados L, Soliman DS, Taha RY, Fernyhough LJ. The Role of Integrated Positron Emission Tomography/Computed Tomography (PET/CT) and Bone Marrow Examination in Staging Large B-Cell Lymphoma. Clin Med Insights Oncol 2020; 14:1179554920953091. [PMID: 35185352 PMCID: PMC8855442 DOI: 10.1177/1179554920953091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/31/2020] [Indexed: 11/22/2022] Open
Abstract
Introduction: In the era of routine use of positron emission tomography/computed tomography (PET/CT) for staging, it is not yet clear whether PET/CT can replace bone marrow biopsy for the assessment of bone marrow involvement in large B-cell lymphoma. Objectives: To compare the clinical utility of bone marrow biopsy and PET/CT scanning in the staging of large B-cell lymphoma. Methods: This was a retrospective analysis of all patients who presented to single center over a 4-year period with large B-cell lymphoma who had concurrent PET/CT and bone marrow biopsy performed in the assessment and staging of the lymphoma. Results: Out of 89 patients, 24 had bone marrow involvement either by PET/CT, by bone marrow biopsy, or by both. Bone marrow biopsy identified 12 patients (sensitivity 50%, specificity 100%, negative predictive value 84%), whereas PET/CT identified 23 patients (sensitivity 96%, specificity 100%, negative predictive value 98%). No patients were upstaged by the bone marrow biopsy result, and no patients had their treatment plan changed based on the bone marrow biopsy result. Conclusion: The results show that PET-CT is more sensitive and has better negative predictive value than bone marrow biopsy. This suggests that PET-CT could replace bone marrow biopsy in detecting bone marrow involvement for staging of large B-cell lymphoma.
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Affiliation(s)
- Ahmad Al-Sabbagh
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.,Department of Medicine, Weill Cornell Medicine - Qatar, Doha, Qatar
| | - Feryal Ibrahim
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Lajos Szabados
- PET/CT Center, Clinical Imaging, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Dina S Soliman
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.,Department of Medicine, Weill Cornell Medicine - Qatar, Doha, Qatar
| | - Ruba Y Taha
- Department of Hematology and Medical Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Liam J Fernyhough
- Department of Medicine, Weill Cornell Medicine - Qatar, Doha, Qatar.,Department of Hematology and Medical Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
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14
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Cho SF, Lin L, Xing L, Li Y, Yu T, Anderson KC, Tai YT. BCMA-Targeting Therapy: Driving a New Era of Immunotherapy in Multiple Myeloma. Cancers (Basel) 2020; 12:E1473. [PMID: 32516895 PMCID: PMC7352710 DOI: 10.3390/cancers12061473] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/20/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022] Open
Abstract
The treatment of multiple myeloma (MM) has entered into a new era of immunotherapy. Novel immunotherapies will significantly improve patient outcome via simultaneously targeting malignant plasma cell (PC) and reversing immunocompromised bone marrow (BM) microenvironment. B-cell maturation antigen (BCMA), selectively expressed in PCs and a key receptor for A proliferation-inducing ligand (APRIL), is highly expressed in MM cells from patients at all stages. The APRIL/BCMA signal cascades promote the survival and drug resistance of MM cells and further modulate immunosuppressive BM milieu. Impressively, anti-BCMA immunotherapeutic reagents, including chimeric antigen receptor (CAR), antibody-drug conjugate (ADC) and bispecific T cell engager (BiTE) have all shown high response rates in their first clinical trials in relapse and refractory patients with very limited treatment options. These results rapidly inspired numerous development of next-generation anti-BCMA biotherapeutics, i.e., bispecific molecule, bispecific or trispecific antibodies, a novel form of CAR T/NK cells and T Cell Antigen Coupler (TAC) receptors, antibody-coupled T cell receptor (ACTR) as well as a cancer vaccine. We here highlight seminal preclinical and clinical studies on novel BCMA-based immunotherapies as effective monotherapy and discuss their potential in combination with current anti-MM and novel checkpoint drugs in earlier disease stages to further achieve durable responses in patients.
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Affiliation(s)
- Shih-Feng Cho
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
- Division of Hematology & Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Liang Lin
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
| | - Lijie Xing
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
| | - Yuyin Li
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
| | - Tengteng Yu
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
| | - Kenneth C Anderson
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
| | - Yu-Tzu Tai
- LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02138, USA; (S.-F.C.); (L.L.); (L.X.); (Y.L.); (T.Y.); (K.C.A.)
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15
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Abstract
PURPOSE OF THE REVIEW The purpose of this review is to describe the in vitro and in vivo methods that researchers use to model and investigate bone marrow adipocytes (BMAds). RECENT FINDINGS The bone marrow (BM) niche is one of the most interesting and dynamic tissues of the human body. Relatively little is understood about BMAds, perhaps in part because these cells do not easily survive flow cytometry and histology processing and hence have been overlooked. Recently, researchers have developed in vitro and in vivo models to study normal function and dysfunction in the BM niche. Using these models, scientists and clinicians have noticed that BMAds, which form bone marrow adipose tissue (BMAT), are able to respond to numerous signals and stimuli, and communicate with local cells and distant tissues in the body. This review provides an overview of how BMAds are modeled and studied in vitro and in vivo.
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Affiliation(s)
- Michaela R Reagan
- Center for Molecular Medicine and Center for Translational Research, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA.
- University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME, USA.
- School of Medicine and Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.
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16
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Cen SY, Moreau JM, Furlonger C, Berger A, Paige CJ. Differential regulation of IgA + B cells in vitro by stromal cells from distinctive anatomical compartments. J Leukoc Biol 2018; 105:507-518. [PMID: 30576006 DOI: 10.1002/jlb.1a0517-172rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 11/06/2018] [Accepted: 11/20/2018] [Indexed: 12/19/2022] Open
Abstract
B cell development is regulated by stromal cells (SCs) that form a supportive microenvironment. These SCs along with other cell types produce cytokines, chemokines, and adhesion molecules that guide B cell commitment and differentiation. BM, spleen (Sp), and the gut lamina propria (LP) constitute distinctive anatomical compartments that support B cell differentiation. In order to characterize and compare the signals necessary to generate IgA+ B cells, we developed an in vitro system to co-culture gut LP, BM, or Sp-derived SCs with B lineage cells. Using this co-culture system, we found that gut LP SCs promote IgA+ B cell accumulation through the production of soluble stimulatory factors. In contrast to gut LP SCs, BM and splenic SCs were found to impair IgA+ B cell accumulation in vitro. Taken together, these observations provide new insights into how SCs derived from different anatomical locations shape IgA+ B cell responses.
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Affiliation(s)
- Selena Y Cen
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Joshua M Moreau
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Caren Furlonger
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Alexandra Berger
- Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Christopher J Paige
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.,Ontario Cancer Institute, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
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17
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Zheng H, Liu QX, Hou B, Zhou D, Li JM, Lu X, Wu QP, Dai JG. Clinical outcomes of WBRT plus EGFR-TKIs versus WBRT or TKIs alone for the treatment of cerebral metastatic NSCLC patients: a meta-analysis. Oncotarget 2017; 8:57356-57364. [PMID: 28915676 PMCID: PMC5593647 DOI: 10.18632/oncotarget.19054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 04/19/2017] [Accepted: 06/24/2017] [Indexed: 02/05/2023] Open
Abstract
Whether WBRT plus EGFR-TKIs has a greater survival benefit than EGFR-TKIs alone or WBRT alone remains controversial in NSCLC patients with multiple brain metastases. To rectify this, we conducted a systematic meta-analysis based on 9 retrospective studies and 1 randomized controlled study published between 2012 and 2016, comprising 1041 patients. Five studies were included in the comparison of WBRT plus EGFR-TKIs and EGFR-TKIs alone. The combined HR for OS of patients with EGFR mutation was 1.25 [95% CI 0.98–2.15; P = 0.08] and for intracranial PFS was 1.30 [95% CI 1.03–1.65; P = 0.03], which revealed that EGFR-TKIs alone produced a superior intracranial PFS than WBRT plus EGFR-TKIs. Five studies were included in the comparison of WBRT plus EGFR-TKIs and WBRT alone. The combined HR for OS, intracranial PFS and extracranial PFS were 0.52 [95% CI 0.37–0.75; P = 0.0004], 0.36 [95% CI 0.24–0.53; P < 0.001] and 0.52 [95% CI 0.38–0.71; P < 0.001], respectively, which revealed a significant benefit of WBRT plus EGFR-TKIs compared with WBRT alone. The results indicated that EGFR-TKIs alone should be the first option for the treatment of NSCLC patients with multiple BM, especially with EGFR mutation, since it provides similar OS and extracranial PFS but superior intracranial PFS compared with WBRT plus EGFR-TKIs.
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Affiliation(s)
- Hong Zheng
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Quan-Xing Liu
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Bin Hou
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Dong Zhou
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Jing-Meng Li
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Xiao Lu
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Qiu-Ping Wu
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Ji-Gang Dai
- Department of Thoracic Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
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18
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Kalra S, Verma J, Atkinson BJ, Matin SF, Wood CG, Karam JA, Lin SH, Satcher RL, Tamboli P, Sircar K, Rao P, Corn PG, Tannir NM, Jonasch E. Outcomes of Patients With Metastatic Renal Cell Carcinoma and Bone Metastases in the Targeted Therapy Era. Clin Genitourin Cancer 2017; 15:363-370. [PMID: 28216278 DOI: 10.1016/j.clgc.2017.01.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 01/07/2017] [Accepted: 01/10/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND Bone metastases (BMs) occur commonly in patients with metastatic renal cell carcinoma (mRCC). Tyrosine kinase inhibitors (TKIs) have improved the outcomes for patients with mRCC. However, data on the outcomes of mRCC patients with BMs treated with TKIs are limited. We describe the outcomes of patients with BMs treated with TKI therapy and compare them with the outcomes from a pre-TKI group. PATIENTS AND METHODS Using an institutional tumor registry, a retrospective review of patients with mRCC from 2002 to 2003 and 2006 to 2007 was performed. The baseline characteristics were analyzed, and overall survival (OS) was estimated using the Kaplan-Meier method. The predictors of OS were analyzed using Cox regression analysis. RESULTS The data from 375 patients were reviewed. Of these patients, 188 (50%) started treatment with TKIs and 187 (50%) had started treatment in the pre-TKI era. The distribution of patient characteristics was similar. The sites of organ metastases were equally distributed, including BMs in 48% of the patients in each cohort. The median OS for the patients treated in the TKI era was 22 months (95% confidence interval [CI], 17-25 months) compared with 14 months (95% CI, 10-19 months; P < .01) for the historical controls. A subset analysis of patients with BM in the TKI era demonstrated a median OS of 24 months (95% CI, 17-28 months) compared with 18 months (95% CI, 10-21 months; P < .01) in pre-TKI era. The predictors of shorter OS were a higher Memorial Sloan Kettering Cancer Center score; liver, lung, and brain metastases; and multiple sites of BMs (hazard ratio, 1.38; 95% CI, 1.02-1.91; P = .04). The rate of new BM development was the same in the pre- and post-TKI era. CONCLUSION The rate of BM development was the same in the pre- and post-TKI era. The management of BMs in patients with mRCC remains challenging.
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Affiliation(s)
- Sarathi Kalra
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX; Department of Emergency Medicine, Baylor College of Medicine, Houston, TX
| | - Jonathan Verma
- Department of Radiation Oncology, University of Miami, Miami, FL
| | - Bradley J Atkinson
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Surena F Matin
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Christopher G Wood
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jose A Karam
- Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sue-Hwa Lin
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Robert L Satcher
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Pheroze Tamboli
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kanishka Sircar
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Priya Rao
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Paul G Corn
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Nizar M Tannir
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Eric Jonasch
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX.
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Abstract
In adult mammals, hematopoietic stem cells (HSCs) are defined by their abilities to self-renew and to differentiate to form all blood cell lineages. These rare multipotent cells occupy specific locations in the bone marrow (BM) microenvironment. The specific microenvironment regulating HSCs, commonly referred to as the niche, comprises multiple cell types whose exact contributions are under active investigation. Understanding cellular cross talk involving HSCs in the BM microenvironment is of fundamental importance for harnessing therapies against benign and malignant blood diseases. In this review, we summarize and evaluate recent advances in our understanding of niche heterogeneity and its influence on HSC function.
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Affiliation(s)
- Alexander Birbrair
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, New York.,Departments of Medicine and Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Paul S Frenette
- Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, New York.,Departments of Medicine and Cell Biology, Albert Einstein College of Medicine, Bronx, New York
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20
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Abstract
Novel effective immunotherapies are needed for patients with multiple myeloma (MM), since disease recurrence remains a major obstacle. B-cell maturation antigen (BCMA), a cell surface protein universally expressed on malignant plasma cells , has emerged as a very selective antigen to be targeted in novel treatments for MM. We here first review BCMA-related biology, and then highlight the recent clinical development of a novel afucosylated anti-BCMA monoclonal antibody conjugated with monomethyl auristatin F via noncleavable linker (GSK2857916). Chimeric antigen receptor-expressing T cells targeting BCMA may also induce specific and durable anti-MM responses by patients' own effector cells. Clinical trials testing these two approaches (NCT02064387, NCT02215967) are currently ongoing in relapsed and refractory MM patients.
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Affiliation(s)
- Yu-Tzu Tai
- Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Ave, Boston, MA 02215, USA
| | - Kenneth C Anderson
- Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Ave, Boston, MA 02215, USA
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21
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Robinson JW, Li JY, Walker LD, Tyagi AM, Reott MA, Yu M, Adams J, Weitzmann MN, Pacifici R. T cell-expressed CD40L potentiates the bone anabolic activity of intermittent PTH treatment. J Bone Miner Res 2015; 30:695-705. [PMID: 25359628 PMCID: PMC4376617 DOI: 10.1002/jbmr.2394] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/27/2014] [Accepted: 10/28/2014] [Indexed: 01/01/2023]
Abstract
T cells are known to potentiate the bone anabolic activity of intermittent parathyroid hormone (iPTH) treatment. One of the involved mechanisms is increased T cell secretion of Wnt10b, a potent osteogenic Wnt ligand that activates Wnt signaling in stromal cells (SCs). However, additional mechanisms might play a role, including direct interactions between surface receptors expressed by T cells and SCs. Here we show that iPTH failed to promote SC proliferation and differentiation into osteoblasts (OBs) and activate Wnt signaling in SCs of mice with a global or T cell-specific deletion of the T cell costimulatory molecule CD40 ligand (CD40L). Attesting to the relevance of T cell-expressed CD40L, iPTH induced a blunted increase in bone formation and failed to increase trabecular bone volume in CD40L(-/-) mice and mice with a T cell-specific deletion of CD40L. CD40L null mice exhibited a blunted increase in T cell production of Wnt10b and abrogated CD40 signaling in SCs in response to iPTH treatment. Therefore, expression of the T cell surface receptor CD40L enables iPTH to exert its bone anabolic activity by activating CD40 signaling in SCs and maximally stimulating T cell production of Wnt10b.
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Affiliation(s)
- Jerid W Robinson
- Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University, Atlanta, GA, USA
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22
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Carare RO, Hawkes CA, Weller RO. Afferent and efferent immunological pathways of the brain. Anatomy, function and failure. Brain Behav Immun 2014; 36:9-14. [PMID: 24145049 DOI: 10.1016/j.bbi.2013.10.012] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 09/20/2013] [Accepted: 10/12/2013] [Indexed: 12/22/2022] Open
Abstract
Immunological privilege appears to be a product of unique lymphatic drainage systems for the brain and receptor-mediated entry of inflammatory cells through the blood-brain barrier. Most organs of the body have well-defined lymphatic vessels that carry extracellular fluid, antigen presenting cells, lymphocytes, neoplastic cells and even bacteria to regional lymph nodes. The brain has no such conventional lymphatics, but has perivascular pathways that drain interstitial fluid (ISF) from brain parenchyma and cerebrospinal fluid (CSF) from the subarachnoid space to cervical lymph nodes. ISF and solutes drain along narrow, ∼100 nm-thick basement membranes within the walls of cerebral capillaries and arteries to cervical lymph nodes; this pathway does not allow traffic of lymphocytes or antigen presenting cells from brain to lymph nodes. Although CSF drains into blood through arachnoid villi, CSF also drains from the subarachnoid space through channels in the cribriform plate of the ethmoid bone into nasal lymphatics and thence to cervical lymph nodes. This pathway does allow the traffic of lymphocytes and antigen presenting cells from CSF to cervical lymph nodes. Efferent pathways by which lymphocytes enter the brain are regulated by selected integrins on lymphocytes and selective receptors on vascular endothelial cells. Here we review: (1) the structure and function of afferent lymphatic drainage of ISF and CSF, (2) mechanisms involved in the efferent pathways by which lymphocytes enter the brain and (3) the failure of lymphatic drainage of the brain parenchyma with age and the role of such failure in the pathogenesis of Alzheimer's disease.
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Affiliation(s)
- R O Carare
- Faculty of Medicine, University of Southampton, UK.
| | - C A Hawkes
- Faculty of Medicine, University of Southampton, UK
| | - R O Weller
- Faculty of Medicine, University of Southampton, UK
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23
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Weber-Fahr W, Englisch S, Esser A, Tunc-Skarka N, Meyer-Lindenberg A, Ende G, Zink M. Altered phospholipid metabolism in schizophrenia: a phosphorus 31 nuclear magnetic resonance spectroscopy study. Psychiatry Res 2013; 214:365-73. [PMID: 24045051 DOI: 10.1016/j.pscychresns.2013.06.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 05/31/2013] [Accepted: 06/21/2013] [Indexed: 12/26/2022]
Abstract
Phospholipid (PL) metabolism is investigated by in vivo 31P magnetic resonance spectroscopy (MRS). Inconsistent alterations of phosphocholine (PC), phosphoethanolamine (PE), glycerophosphocholine (GPC) and glycerophosphoethanolamine (GPE) have been described in schizophrenia, which might be overcome by specific editing techniques. The selective refocused insensitive nuclei-enhanced polarization transfer (RINEPT) technique was applied in a cross-sectional study involving 11 schizophrenia spectrum disorder patients (SZP) on stable antipsychotic monotherapy and 15 matched control subjects. Metabolite signals were found to be modulated by cerebrospinal fluid (CSF) content and gray matter/brain matter ratio. Corrected metabolite concentrations of PC, GPC and PE differed between patients and controls in both subcortical and cortical regions, whereas antipsychotic medication exerted only small effects. Significant correlations were found between the severity of clinical symptoms and the assessed signals. In particular, psychotic symptoms correlated with PC levels in the cerebral cortex, depression with PC levels in the cerebellum and executive functioning with GPC in the insular and temporal cortices. In conclusion, after controlling for age and tissue composition, this investigation revealed alterations of metabolite levels in SZP and correlations with clinical properties. RINEPT 31P MRS should also be applied to at-risk-mental-state patients as well as drug-naïve and chronically treated schizophrenic patients in order to enhance the understanding of longitudinal alterations of PL metabolism in schizophrenia.
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Affiliation(s)
- Wolfgang Weber-Fahr
- Department of Neuroimaging, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
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24
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Bhagat SP, Kilgore C. Efferent-mediated reduction in cochlear gain does not alter tuning estimates from stimulus-frequency otoacoustic emission group delays. Neurosci Lett 2013; 559:132-5. [PMID: 24333175 DOI: 10.1016/j.neulet.2013.11.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 10/24/2013] [Accepted: 11/29/2013] [Indexed: 10/25/2022]
Abstract
The existence of efferent feedback from cortical and subcortical brain centers to the hair cells of the cochlea has been recognized for many years, but the role that efferent neurons play in hearing is not completely known. Stimulation of medial olivocochlear (MOC) efferent neurons suppresses sound-evoked basilar membrane responses and changes the tuning of single auditory nerve fibers in animal models. Both of these effects are linked to a MOC-induced reduction in the gain of the cochlear amplification provided by outer hair cells. To non-invasively examine the link between cochlear suppression and tuning in humans, stimulus-frequency otoacoustic emissions (SFOAEs) were recorded in conditions with and without contralateral acoustic stimulation (CAS) from 28 normal-hearing participants. SFOAEs were measured using clusters of closely-spaced probe-tone frequencies centered near 1.4 and 2.0kHz. An index of cochlear tuning, QERB, was calculated based on measures of SFOAE group delay at both 1.4 and 2.0kHz. A statistically significant (p<0.01) decrease in SFOAE levels acquired during CAS was detected only for the SFOAE cluster centered at 2kHz. No statistically significant differences in QERB were found between conditions with and without CAS at 1.4 and 2.0kHz. These findings suggest that in humans, tuning based on SFOAE group delay estimates is not appreciably altered at cochlear locations with MOC efferent-induced reductions in cochlear gain.
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Affiliation(s)
- Shaum P Bhagat
- Hearing Science Laboratory, School of Communication Sciences and Disorders, The University of Memphis, Memphis, TN 38105, United States.
| | - Chelsea Kilgore
- Hearing Science Laboratory, School of Communication Sciences and Disorders, The University of Memphis, Memphis, TN 38105, United States
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25
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Chaudhary K, Liedtke C, Wertenbruch S, Trautwein C, Streetz KL. Caspase 8 differentially controls hepatocytes and non-parenchymal liver cells during chronic cholestatic liver injury in mice. J Hepatol 2013; 59:1292-8. [PMID: 23928400 DOI: 10.1016/j.jhep.2013.07.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 07/14/2013] [Accepted: 07/16/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND & AIMS Receptor mediated cell death through the activation of caspases has been identified as an important mechanism to control life and death in various tissues and is thus crucial for the maintenance of liver tissue homeostasis. Here we investigated how caspase 8 (Casp8) differentially regulates immune-mediated liver injury and regeneration in distinct liver cell types during chronic liver injury. METHODS Conditional knockout mice with hepatocellular (Casp8(Δhepa)) and ubiquitous deletion of Casp8 (Casp8(ΔMx)) were used in models of cholestatic hepatitis [(DDC (3,5-diethoxycarbonyl-1,4-dihydrocollidine) treatment, bile duct ligation (BDL) and choline deficient diet with ethionine supplementation (CDE)]. RESULTS Mice with a hepatocellular deletion of Casp8 (Casp8(Δhepa)) were protected after DDC-treatment. Animals with a ubiquitous conditional Casp8 knockout (Casp8(ΔMx)) displayed a significantly enhanced liver injury in various models of cholestatic liver injury. This was associated with higher transaminases, bilirubin levels and finally more liver fibrosis. However, caspase 3 (Casp3) activity was reduced in both knockout strains, suggesting additionally mechanisms contributing to the phenotype. Casp8(ΔMx) mice displayed a stronger infiltration of mononuclear immune cells and more proliferation of liver-parenchymal cells in periportal areas. Further analysis confirmed that these infiltrating immune cells are resistant against extrinsic apoptosis. Bone-marrow-transplantation (BMT) experiments demonstrated that Casp8-deficient bone marrow derived cells are responsible for increased liver injury in DDC fed mice. CONCLUSIONS Our results demonstrate that cell-type specific differences in apoptosis resistance mediated by Casp8 deletion are of significant relevance for the outcome of chronic liver injury.
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Affiliation(s)
- Kunal Chaudhary
- Department of Medicine III, University Hospital Aachen, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
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26
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Dalamaga M, Karmaniolas K, Chamberland J, Nikolaidou A, Lekka A, Dionyssiou-Asteriou A, Mantzoros CS. Higher fetuin-A, lower adiponectin and free leptin levels mediate effects of excess body weight on insulin resistance and risk for myelodysplastic syndrome. Metabolism 2013; 62:1830-9. [PMID: 24140093 DOI: 10.1016/j.metabol.2013.09.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 08/24/2013] [Accepted: 09/12/2013] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Excess body weight has been implicated in the pathogenesis of myelodysplastic syndrome (MDS). We thus explored the role of serum fetuin-A reflecting ectopic hepatic fat deposition when storage capacity of adipocytes has been exceeded, free leptin reflecting overall fat mass and adiponectin reflecting visceral fat mass, all potential mediators of the effects of obesity on insulin resistance and, consequently, to MDS risk. MATERIALS & METHODS In a hospital-based case-control study, we studied 101 cases with incident, histologically confirmed primary MDS and 101 controls matched on gender, age and date of diagnosis, between 2004 and 2007. Serum fetuin-A, adiponectin, leptin, leptin receptor, free leptin and insulin were determined. RESULTS Higher serum fetuin-A, lower adiponectin and lower free leptin were all individually and independently associated with higher risk of MDS before and after controlling for matching and risk factors, such as age, gender, date of diagnosis, body mass index (BMI), family history of lymphohematopoietic cancer, smoking history and serum insulin. Interestingly, we have shown that these associations were prominent among overweight/obese individuals and persisted after controlling for BMI and serum insulin indicating that their effects are above and beyond insulinemia only. CONCLUSION Elevated serum fetuin-A but lower adiponectin and free leptin are associated with higher risk of MDS particularly among overweight/obese individuals. These findings suggest that the association between excessive weight gain and the risk of MDS could be mediated by fetuin-A, adiponectin and free leptin, which may have potential clinical and preventive implications.
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Affiliation(s)
- Maria Dalamaga
- Department of Clinical Biochemistry, Medical School, University of Athens, "Attikon" General University Hospital, 1 Rimini street, Chaidari, 12462 Athens, Greece.
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27
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Ma CH, Liu YT, Savva CG, Rowley PA, Cannon B, Fan HF, Russell R, Holzenburg A, Jayaram M. Organization of DNA partners and strand exchange mechanisms during Flp site-specific recombination analyzed by difference topology, single molecule FRET and single molecule TPM. J Mol Biol 2013; 426:793-815. [PMID: 24286749 DOI: 10.1016/j.jmb.2013.11.017] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 11/18/2013] [Accepted: 11/18/2013] [Indexed: 10/26/2022]
Abstract
Flp site-specific recombination between two target sites (FRTs) harboring non-homology within the strand exchange region does not yield stable recombinant products. In negatively supercoiled plasmids containing head-to-tail sites, the reaction produces a series of knots with odd-numbered crossings. When the sites are in head-to-head orientation, the knot products contain even-numbered crossings. Both types of knots retain parental DNA configuration. By carrying out Flp recombination after first assembling the topologically well defined Tn3 resolvase synapse, it is possible to determine whether these knots arise by a processive or a dissociative mechanism. The nearly exclusive products from head-to-head and head-to-tail oriented "non-homologous" FRT partners are a 4-noded knot and a 5-noded knot, respectively. The corresponding products from a pair of native (homologous) FRT sites are a 3-noded knot and a 4-noded catenane, respectively. These results are consistent with non-homology-induced two rounds of dissociative recombination by Flp, the first to generate reciprocal recombinants containing non-complementary base pairs and the second to produce parental molecules with restored base pairing. Single molecule fluorescence resonance energy transfer (smFRET) analysis of geometrically restricted FRTs, together with single molecule tethered particle motion (smTPM) assays of unconstrained FRTs, suggests that the sites are preferentially synapsed in an anti-parallel fashion. This selectivity in synapse geometry occurs prior to the chemical steps of recombination, signifying early commitment to a productive reaction path. The cumulative topological, smFRET and smTPM results have implications for the relative orientation of DNA partners and the directionality of strand exchange during recombination mediated by tyrosine site-specific recombinases.
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Affiliation(s)
- Chien-Hui Ma
- Section of Molecular Genetics and Microbiology, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
| | - Yen-Ting Liu
- Section of Molecular Genetics and Microbiology, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
| | - Christos G Savva
- Microscopy and Imaging Center, Department of Biology and Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843-2257, USA
| | - Paul A Rowley
- Section of Molecular Genetics and Microbiology, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
| | - Brian Cannon
- Department of Chemistry and Biochemistry, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
| | - Hsiu-Fang Fan
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei 112, Taiwan
| | - Rick Russell
- Department of Chemistry and Biochemistry, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
| | - Andreas Holzenburg
- Microscopy and Imaging Center, Department of Biology and Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843-2257, USA
| | - Makkuni Jayaram
- Section of Molecular Genetics and Microbiology, Institute of Cell and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA.
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Leonardi A, Sajevic T, Kovačič L, Pungerčar J, Lang Balija M, Halassy B, Trampuš Bakija A, Križaj I. Hemorrhagin VaH4, a covalent heterodimeric P-III metalloproteinase from Vipera ammodytes ammodytes with a potential antitumour activity. Toxicon 2013; 77:141-55. [PMID: 24269369 DOI: 10.1016/j.toxicon.2013.11.009] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/30/2013] [Accepted: 11/14/2013] [Indexed: 01/23/2023]
Abstract
In the envenomation caused by a bite of Vipera ammodytes ammodytes, the most venomous snake in Europe, hemorrhage is usually the most severe consequence in man. Identifying and understanding the hemorrhagic components of its venom is therefore particularly important in optimizing medical treatment of patients. We describe a novel high molecular mass hemorrhagin, VaH4. The isolated molecule is a covalent dimer of two homologous subunits, VaH4-A and VaH4-B. Complete structural characterization of A and partial characterization of B revealed that both belong to the P-III class of snake venom metalloproteinases (SVMPs), comprising a metalloproteinase, a disintegrin-like domain and a cysteine-rich domain. However, neither VaH4-A nor VaH4-B possess the Cys174 involved in the inter-subunit disulphide bond of P-III SVMPs. A three-dimensional model of the VaH4 dimer suggests that Cys132 serves this function. This implies that dimers in the P-III class of SVMPs can be formed either between their Cys132 or Cys174 residues. The proteolytic activity and stability of VaH4 depend on Zn²⁺ and Ca²⁺ ions and the presence of glycosaminoglycans, which indicates physiological interaction of VaH4 with the latter element of the extracellular matrix (ECM). The molecular mass of VaH4, determined by MALDI/TOF mass spectrometry, is 110.2 kDa. N-deglycosylation reduced the mass of each monomer by 8.7 kDa. The two possible N-glycosylation sites in VaH4-A are located at completely different positions from those in homodimeric P-IIIc VaH3 from the same venom, however, without any evident functional implications. The hemorrhagic activity of this slightly acidic SVMP is ascribed to its hydrolysis of components of the ECM, particularly fibronectin and nidogen, and of some blood coagulation proteins, in particular the α-chain of fibrinogen. VaH4 is also significant medically as we found it cytotoxic against cancer cells and due to its substantial sequence similarity to ADAM/ADAMTS family of physiologically very important human proteins of therapeutic potential.
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Affiliation(s)
- Adrijana Leonardi
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Tamara Sajevic
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Lidija Kovačič
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Jože Pungerčar
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Maja Lang Balija
- Research and Development Department, Institute of Immunology, Inc., Rockefellerova 10, HR-10 000 Zagreb, Croatia
| | - Beata Halassy
- University of Zagreb, Centre for Research and Knowledge Trasfer in Biotechnology, Rockefellerova 10, HR-10000 Zagreb, Croatia
| | | | - Igor Križaj
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia; Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva cesta 5, SI-1000 Ljubljana, Slovenia; Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Jamova cesta 39, SI-1000 Ljubljana, Slovenia.
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29
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Wang N, Rajasekaran N, Hou T, Mellins ED. Transgene expression in various organs post BM-HSC transplantation. Stem Cell Res 2013; 12:209-21. [PMID: 24270160 DOI: 10.1016/j.scr.2013.10.010] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 10/17/2013] [Accepted: 10/26/2013] [Indexed: 11/29/2022] Open
Abstract
Gene therapy mediated by bone marrow-derived hematopoietic stem cells (BM-HSC) has been widely used in treating genetic deficiencies in both pre-clinical and clinical settings. Using mitotically inactive cell-targeting lentivirus with separate promoters for our gene of interest (the murine MHC class II (MHCII) chaperone, invariant chain (Ii)) and a GFP reporter, we monitored the expression and function of introduced Ii in various types of professional antigen presenting cells (B cells, macrophages and DC) from different organs (spleen, pancreatic lymph nodes (PLN), BM and blood). Ii and GFP were detected. Ii levels correlated with GFP levels only in macrophages and monocytes from spleen, monocytes from PLN and macrophage precursors from blood. By cell type, Ii levels in PLN cells were more similar to those in spleen cells than to those in blood or BM cells. Functionally, Ii expressed in PLN or spleen had more effect on MHCII abundance than Ii expressed in BM or blood. The results have implications for analysis of the outcomes of gene therapy when both therapeutic and reporter genes are introduced. The findings also have implications for understanding the development of immune molecule function.
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Affiliation(s)
- Nan Wang
- Department of Pediatrics, Program in Immunology, Program in Human Gene Therapy, Stanford University School of Medicine, Stanford, CA, USA.
| | - Narendiran Rajasekaran
- Department of Pediatrics, Program in Immunology, Program in Human Gene Therapy, Stanford University School of Medicine, Stanford, CA, USA.
| | - Tieying Hou
- Department of Pediatrics, Program in Immunology, Program in Human Gene Therapy, Stanford University School of Medicine, Stanford, CA, USA.
| | - Elizabeth D Mellins
- Department of Pediatrics, Program in Immunology, Program in Human Gene Therapy, Stanford University School of Medicine, Stanford, CA, USA.
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Lukacs-Kornek V, Schuppan D. Dendritic cells in liver injury and fibrosis: shortcomings and promises. J Hepatol 2013; 59:1124-6. [PMID: 23727306 DOI: 10.1016/j.jhep.2013.05.033] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 05/21/2013] [Accepted: 05/22/2013] [Indexed: 12/04/2022]
Abstract
The phenotype and function of liver dendritic cells (LDCs) are poorly understood. This Snapshot summarizes our current knowledge on LDCs in the healthy and injured liver, and their role in fibrosis progression and reversal. It also draws attention to various pitfalls in the current experimental design and conclusions based on available data.
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de Geus ED, Vervelde L. Regulation of macrophage and dendritic cell function by pathogens and through immunomodulation in the avian mucosa. Dev Comp Immunol 2013; 41:341-351. [PMID: 23542704 DOI: 10.1016/j.dci.2013.03.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 03/14/2013] [Indexed: 06/02/2023]
Abstract
Macrophages (MPh) and dendritic cells (DC) are members of the mononuclear phagocyte system. In chickens, markers to distinguish MPh from DC are lacking, but whether MPh and DC can be distinguished in humans and mice is under debate, despite the availability of numerous markers. Mucosal MPh and DC are strategically located to ingest foreign antigens, suggesting they can rapidly respond to invading pathogens. This review addresses our current understanding of DC and MPh function, the receptors expressed by MPh and DC involved in pathogen recognition, and the responses of DC and MPh against respiratory and intestinal pathogens in the chicken. Furthermore, potential opportunities are described to modulate MPh and DC responses to enhance disease resistance, highlighting modulation through nutraceuticals and vaccination.
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Affiliation(s)
- Eveline D de Geus
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
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Wang L, Wang X, Zhang S, Qu G, Liu S. A protective role of heme-regulated eIF2α kinase in cadmium-induced toxicity in erythroid cells. Food Chem Toxicol 2013; 62:880-91. [PMID: 24161693 DOI: 10.1016/j.fct.2013.10.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [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: 08/09/2013] [Revised: 10/05/2013] [Accepted: 10/12/2013] [Indexed: 12/11/2022]
Abstract
Although a number of studies have demonstrated that cadmium (Cd) can incur damage to mature red cells, the potential injuries of Cd to erythroid progenitor cells have not been investigated thus far. Heme-regulated eIF2α kinase (Hri) is essential for translational regulation and survival of erythroid precursors in the setting of iron deficiency. Hri has been demonstrated to activate Atf4 signaling in reducing oxidative stress and in promoting erythroid differentiation during stress erythropoiesis. Here, we demonstrated that Cd significantly provoked cell death and suppressed erythroid differentiation of erythroid progenitor cells. Importantly, our results established a crucial role of Hri in ameliorating Cd-induced impairment to erythropoiesis. Upon Cd treatment, Hri-eIF2αP-Atf4 signaling was activated to protect cells from cell death and differentiation attenuation in Wt fetal liver erythroblasts; in contrast, Hri(-/-) erythroblasts suffered from enhanced oxidative stress, as evidenced by increased levels of reactive oxygen species (ROS) and consequentially elevated apoptosis. As for Cd administration in vivo, impaired erythropoiesis in bone marrow and dramatic extramedullary erythropoiesis in spleen were observed in Hri(-/-) mice. Taken together, our combined data highlighted a crucial role of Hri in protecting survival and differentiation of erythroid progenitor cells upon Cd treatment.
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Affiliation(s)
- Lixin Wang
- State Key Laboratory of Environment Chemistry and Ecotoxicology, Research Center for Eco-Environment Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Jin C, Flavell RA. Innate sensors of pathogen and stress: linking inflammation to obesity. J Allergy Clin Immunol 2013; 132:287-94. [PMID: 23905917 DOI: 10.1016/j.jaci.2013.06.022] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 06/20/2013] [Accepted: 06/21/2013] [Indexed: 12/11/2022]
Abstract
Pathogen and nutrient response pathways are evolutionarily conserved and highly integrated to regulate metabolic and immune homeostasis. Excessive nutrients can be sensed by innate pattern recognition receptors as danger signals either directly or through production of endogenous ligands or modulation of intestinal microbiota. This triggers the activation of downstream inflammatory cascades involving nuclear factor κB and mitogen-activated protein kinase and ultimately induces the production of inflammatory cytokines and immune cell infiltration in various metabolic tissues. The chronic low-grade inflammation in the brain, islet, liver, muscle, and adipose tissue further promotes insulin resistance, energy imbalance, and impaired glucose/lipid metabolism, contributing to the metabolic complications of obesity, such as diabetes and atherosclerosis. In addition, innate pathogen receptors have now emerged as a critical link between the intestinal microbiota and host metabolism. In this review we summarize recent studies demonstrating the important roles of innate pathogen receptors, including Toll-like receptors, nucleotide oligomerization domain containing proteins, and inflammasomes in mediating the inflammatory response to metabolic stress in different tissues and highlight the interaction of innate pattern recognition receptors, gut microbiota, and nutrients during the development of obesity and related metabolic disorders.
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Abstract
Mesenchymal stem cells (MSCs) are pluripotent non-hematopoietic precursor cells that can be isolated from bone marrow and numerous other tissues, culture-expanded to purity, and induced to differentiate in vitro and in vivo into mesodermal derivatives. MSCs exhibit many phenotypic and functional similarities to pericytes. The immunomodulatory, tissue protective, and repair-promoting properties of MSCs demonstrated both in vitro and in animal models make them an attractive potential therapy for MS and other conditions characterized by inflammation and/or tissue injury. Other potential advantages of MSCs as a therapeutic include the relative ease of culture expansion, relative immunoprivilege allowing allogeneic transplantation, and their ability to traffic from blood to areas of tissue allowing intravascular administration. The overall published experience with MSC transplantation in MS is modest, but several small case series and preliminary studies yielded promising results. Several groups, including us, recently initiated formal studies of autologous, culture-expanded, bone marrow-derived MSC transplantation in MS. Although there are several potential safety concerns, to date, the procedure has been well tolerated. Future studies that more definitively assess efficacy also will need to address several technical issues.
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Affiliation(s)
- Jeffrey A Cohen
- Mellen Center, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, USA.
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Ooi JH, McDaniel KL, Weaver V, Cantorna MT. Murine CD8+ T cells but not macrophages express the vitamin D 1α-hydroxylase. J Nutr Biochem 2013; 25:58-65. [PMID: 24314866 DOI: 10.1016/j.jnutbio.2013.09.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 08/22/2013] [Accepted: 09/05/2013] [Indexed: 12/31/2022]
Abstract
The active form of vitamin D, 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] is synthesized by the 1α-hydroxylase, which is encoded by the Cyp27B1 gene. Using transgenic mice that have replaced the Cyp27B1 gene with the bacterial lacZ reporter gene (β-galactosidase), the inflammatory conditions that induce Cyp27B1 in the immune system were probed. A variety of stimuli including lipopolysaccharide, anti-CD3 or PMA/ionomycin were used to stimulate splenocytes and bone marrow derived macrophage in vitro. Only anti-CD3 stimulation resulted in a low induction of β-galactosidase activity in the spleen, indicating that T cells might be a source of Cyp27B1. In vivo, challenge with lipopolysaccharide, α-galactosylceramide, and Listeria monocytogenes failed to induce β-galactosidase activity outside of the kidneys. During more prolonged and severe inflammation there was staining in both the lungs and the gastrointestinal tract for β-galactosidase. Furthermore, wild-type reconstitution of the hematopoietic cell population in Cyp27B1 KO mice protected the mice from experimental colitis. T cell production of Cyp27B1 activity was shown to be from the CD8+ but not the CD4+ T cell population. CD8+ T cells expressed the reporter gene only after 48 h of stimulation. The data is consistent with a model where CD8+ T cells are activated to produce Cyp27B1 and 1,25(OH)2D3 that serves to turn off the local immune response.
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Affiliation(s)
- Jot Hui Ooi
- Center for Molecular Immunology and Infectious Disease, Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA16802
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Takaki H, Honda K, Atarashi K, Kobayashi F, Ebihara T, Oshiumi H, Matsumoto M, Shingai M, Seya T. MAVS-dependent IRF3/7 bypass of interferon β-induction restricts the response to measles infection in CD150Tg mouse bone marrow-derived dendritic cells. Mol Immunol 2014; 57:100-10. [PMID: 24096085 DOI: 10.1016/j.molimm.2013.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/07/2013] [Accepted: 08/15/2013] [Indexed: 01/14/2023]
Abstract
Measles virus (MV) infects CD150Tg/Ifnar (IFN alpha receptor)(-/-) mice but not CD150 (a human MV receptor)-transgenic (Tg) mice. We have shown that bone marrow-derived dendritic cells (BMDCs) from CD150Tg/Ifnar(-/-) mice are permissive to MV in contrast to those from simple CD150Tg mice, which reveals a crucial role of type I interferon (IFN) in natural tropism against MV. Yet, the mechanism whereby BMDCs produce initial type I IFN has not been elucidated in MV infection. RNA virus infection usually allows cells to generate double-stranded RNA and induce activation of IFN regulatory factor (IRF) 3/7 transcription factors, leading to the production of type I IFN through the retinoic acid-inducible gene I (RIG-I)/melanoma differentiation-associated gene 5 (MDA5)-mitochondrial antiviral signaling protein (MAVS) pathway. In mouse experimental BMDCs models, we found CD150Tg/Mavs(-/-)BMDCs, but not CD150Tg/Irf3(-/-)/Irf7(-/-)BMDCs, permissive to MV. IFN-α/β were not induced in MV-infected CD150Tg/Mavs(-/-)BMDCs, while IFN-β was subtly induced in CD150Tg/Irf3(-/-)/Irf7(-/-)BMDCs. In vivo systemic infection was therefore established by transfer of MV-infected CD150Tg/Mavs(-/-) BMDCs to CD150Tg/Ifnar(-/-) mice. These data indicate that MAVS-dependent, IRF3/7-independent IFN-β induction triggers the activation of the IFNAR pathway so as to restrict the spread of MV by infected BMDCs. Hence, MAVS participates in the initial induction of type I IFN in BMDCs and IFNAR protects against MV spreading. We also showed the importance of IL-10-producing CD4(+) T cells induced by MV-infected BMDCs in vitro, which may account for immune modulation due to the functional aberration of DCs.
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Michalakis K, Goulis DG, Vazaiou A, Mintziori G, Polymeris A, Abrahamian-Michalakis A. Obesity in the ageing man. Metabolism 2013; 62:1341-9. [PMID: 23831443 DOI: 10.1016/j.metabol.2013.05.019] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 05/15/2013] [Accepted: 05/29/2013] [Indexed: 12/20/2022]
Abstract
As the population is ageing globally, both ageing and obesity are recognized as major public health challenges. The aim of this narrative review is to present and discuss the current evidence on the changes in body composition, energy balance and endocrine environment that occur in the ageing man. Obesity in the ageing man is related to changes in both body weight and composition due to alterations in energy intake and total energy expenditure. In addition, somatopenia (decreased GH secretion), late-onset hypogonadism (LOH), changes in thyroid and adrenal function, as well as changes in appetite-related peptides (leptin, ghrelin) and, most importantly, insulin action are related to obesity, abnormal energy balance, redistribution of the adipose tissue and sarcopenia (decreased muscle mass). A better understanding of the complex relationship of ageing-related endocrine changes and obesity could lead to more effective interventions for elderly men.
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Affiliation(s)
- K Michalakis
- First Department of Internal Medicine, National and Kapodestrian University of Athens, School of Medicine, "Laiko" General Hospital, Athens, Greece
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Murata Y, Saito Y, Kaneko T, Kotani T, Kaneko Y, Ohnishi H, Matozaki T. Autoimmune animal models in the analysis of the CD47-SIRPα signaling pathway. Methods 2013; 65:254-9. [PMID: 24091004 DOI: 10.1016/j.ymeth.2013.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/18/2013] [Accepted: 09/24/2013] [Indexed: 12/19/2022] Open
Abstract
Signal regulatory protein α (SIRPα), also known as SHPS-1/SIRPA, is an immunoglobulin superfamily protein that binds to the protein tyrosine phosphatases Shp1 and Shp2 through its cytoplasmic region and is predominantly expressed in dendritic cells and macrophages. CD47, a widely expressed transmembrane protein, is a ligand for SIRPα, with the two proteins constituting a cell-cell communication system. It was previously demonstrated that the CD47-SIRPα signaling pathway is important for prevention of clearance by splenic macrophages of red blood cells or platelets from the bloodstream. In addition, this signaling pathway is also implicated in homeostatic regulation of dendritic cells and development of autoimmunity. Here we describe the detailed protocols for methods that were used in our recent studies to study the role of the CD47-SIRPα signaling pathway in autoimmunity. We also demonstrate that hematopoietic SIRPα as well as nonhematopoietic CD47 are important for development of experimental autoimmune encephalomyelitis. Thus, we here strengthen the importance of experimental animal models as well as other methods for the study of molecular pathogenesis of autoimmunity.
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Affiliation(s)
- Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yasuyuki Saito
- Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan; Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511, Japan
| | - Tetsuya Kaneko
- Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yoriaki Kaneko
- Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511, Japan
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan.
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Takahara M, Nemoto Y, Oshima S, Matsuzawa Y, Kanai T, Okamoto R, Tsuchiya K, Nakamura T, Yamamoto K, Watanabe M. IL-7 promotes long-term in vitro survival of unique long-lived memory subset generated from mucosal effector memory CD4+ T cells in chronic colitis mice. Immunol Lett 2013; 156:82-93. [PMID: 24070768 DOI: 10.1016/j.imlet.2013.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2013] [Revised: 08/19/2013] [Accepted: 09/02/2013] [Indexed: 12/22/2022]
Abstract
Colitogenic memory CD4(+) T cells are important in the pathogenesis of inflammatory bowel disease (IBD). Although memory stem cells with high survival and self-renewal capacity were recently identified in both mice and humans, it is unclear whether a similar subset is present in chronic colitis mice. We sought to identify and purify a long-lived subset of colitogenic memory CD4(+) T cells, which may be targets for treatment of IBD. A long-lived subset of colitogenic memory CD4(+) T cells was purified using a long-term culture system. The characteristics of these cells were assessed. Interleukin (IL)-7 promoted the in vitro survival for >8 weeks of lamina propria (LP) CD4(+) T cells from colitic SCID mice previously injected with CD4(+)CD45RB(high) T cells. These cells were in a quiescent state and divided a maximum of 5 times in 4 weeks. LP CD4(+) T cells expressed higher levels of Bcl-2, integrin-α4β7, CXCR3 and CD25 after than before culture, as well as secreting high concentrations of IL-2 and low concentrations of IFN-γ and IL-17 in response to intestinal bacterial antigens. LP CD4(+) T cells from colitic mice cultured with IL-7 for 8 weeks induced more severe colitis than LP CD4(+) T cells cultured for 4 weeks. We developed a novel culture system to purify a long-lived, highly pathogenic memory subset from activated LP CD4(+) T cells. IL-7 promoted long-term in vitro survival of this subset in a quiescent state. This subset will be a novel, effective target for the treatment of IBD.
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Affiliation(s)
- Masahiro Takahara
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8519, Japan; Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Okayama 700-8558, Japan
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Mastelic B, Garçon N, Del Giudice G, Golding H, Gruber M, Neels P, Fritzell B. Predictive markers of safety and immunogenicity of adjuvanted vaccines. Biologicals 2013; 41:458-68. [PMID: 24071553 DOI: 10.1016/j.biologicals.2013.08.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [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: 08/07/2013] [Revised: 08/29/2013] [Accepted: 08/31/2013] [Indexed: 01/08/2023] Open
Abstract
Vaccination represents one of the greatest public health triumphs; in part due to the effect of adjuvants that have been included in vaccine preparations to boost the immune responses through different mechanisms. Although a variety of novel adjuvants have been under development, only a limited number have been approved by regulatory authorities for human vaccines. This report reflects the conclusions of a group of scientists from academia, regulatory agencies and industry who attended a conference on the current state of the art in the adjuvant field. Held at the U.S. Pharmacopeial Convention (USP) in Rockville, Maryland, USA, from 18 to 19 April 2013 and organized by the International Association for Biologicals (IABS), the conference focused particularly on the future development of effective adjuvants and adjuvanted vaccines and on overcoming major hurdles, such as safety and immunogenicity assessment, as well as regulatory scrutiny. More information on the conference output can be found on the IABS website, http://www.iabs.org/.
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Affiliation(s)
- Beatris Mastelic
- WHO Center for Vaccinology and Neonatal Immunology, University of Geneva, CMU, 1 rue Michel-Servet, 1211 Geneva 4, Switzerland.
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Jurak E, Kabel MA, Gruppen H. Carbohydrate composition of compost during composting and mycelium growth of Agaricus bisporus. Carbohydr Polym 2013; 101:281-8. [PMID: 24299775 DOI: 10.1016/j.carbpol.2013.09.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/03/2013] [Accepted: 09/14/2013] [Indexed: 10/26/2022]
Abstract
Changes of plant cell wall carbohydrate structures occurring during the process to make suitable compost for growth of Agaricus bisporus are unknown. In this paper, composition and carbohydrate structures in compost samples collected during composting and mycelium growth were analyzed. Furthermore, different extracts of compost samples were prepared with water, 1M and 4M alkali and analyzed. At the beginning of composting, 34% and after 16 days of mycelium growth 27% of dry matter was carbohydrates. Carbohydrate composition analysis showed that mainly cellulose and poorly substituted xylan chains with similar amounts and ratios of xylan building blocks were present in all phases studied. Nevertheless, xylan solubility increased 20% over the period of mycelium growth indicating partial degradation of xylan backbone. Apparently, degradation of carbohydrates occurred over the process studied by both bacteria and fungi, mainly having an effect on xylan-chain length and solubility.
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Affiliation(s)
- Edita Jurak
- Wageningen University, Laboratory of Food Chemistry, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
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DeRuisseau KC, Park YM, DeRuisseau LR, Cowley PM, Fazen CH, Doyle RP. Aging-related changes in the iron status of skeletal muscle. Exp Gerontol 2013; 48:1294-302. [PMID: 23994517 DOI: 10.1016/j.exger.2013.08.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/17/2013] [Accepted: 08/21/2013] [Indexed: 11/22/2022]
Abstract
The rise in non-heme iron (NHI) concentration observed in skeletal muscle of aging rodents is thought to contribute to the development of sarcopenia. The source of the NHI has not been identified, nor have the physiological ramifications of elevated iron status in aged muscle been directly examined. Therefore, we assessed plantaris NHI and heme iron (HI) levels in addition to expression of proteins involved in iron uptake (transferrin receptor-1; TfR1), storage (ferritin), export (ferroportin; FPN), and regulation (iron regulatory protein-1 (IRP1) and -2 (IRP2)) of male F344xBN F1 rats (n=10/group) of various ages (8, 18, 28, 32, and 36 months) to further understand iron regulation in aging muscle. In a separate experiment, iron chelator (pyridoxal isonicotinoyl hydrazone; PIH) or vehicle was administered to male F344xBN F1 rats (n=8/group) beginning at 30 months of age to assess the impact on plantaris muscle mass and function at ~36 months of age. Principle findings revealed the increased NHI concentration in old age was consistent with concentrating effects of muscle atrophy and reduction in HI levels, with no change in the total iron content of the muscle. The greatest increase in muscle iron content occurred during the period of animal growth and was associated with downregulation of TfR1 and IRP2 expression. Ferritin upregulation did not occur until senescence and the protein remained undetectable during the period of muscle iron content elevation. Lastly, administration of PIH did not significantly (p>0.05) impact NHI or measures of muscle atrophy or contractile function. In summary, this study confirms that the elevated NHI concentration in old age is largely due to the loss in muscle mass. The increased muscle iron content during aging does not appear to associate with cytosolic ferritin storage, but the functional consequences of elevated iron status in old age remains to be determined.
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Ben-Mordechai T, Holbova R, Landa-Rouben N, Harel-Adar T, Feinberg MS, Abd Elrahman I, Blum G, Epstein FH, Silman Z, Cohen S, Leor J. Macrophage subpopulations are essential for infarct repair with and without stem cell therapy. J Am Coll Cardiol. 2013;62:1890-1901. [PMID: 23973704 DOI: 10.1016/j.jacc.2013.07.057] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 07/10/2013] [Accepted: 07/24/2013] [Indexed: 12/16/2022]
Abstract
OBJECTIVES This study sought to investigate the hypothesis that the favorable effects of mesenchymal stromal cells (MSCs) on infarct repair are mediated by macrophages. BACKGROUND The favorable effects of MSC therapy in myocardial infarction (MI) are complex and not fully understood. METHODS We induced MI in mice and allocated them to bone marrow MSCs, mononuclear cells, or saline injection into the infarct, with and without early (4 h before MI) and late (3 days after MI) macrophage depletion. We then analyzed macrophage phenotype in the infarcted heart by flow cytometry and macrophage secretome in vitro. Left ventricular remodeling and global and regional function were assessed by echocardiography and speckle-tracking based strain imaging. RESULTS The MSC therapy significantly increased the percentage of reparative M2 macrophages (F4/80(+)CD206(+)) in the infarcted myocardium, compared with mononuclear- and saline-treated hearts, 3 and 4 days after MI. Macrophage cytokine secretion, relevant to infarct healing and repair, was significantly increased after MSC therapy, or incubation with MSCs or MSC supernatant. Significantly, with and without MSC therapy, transient macrophage depletion increased mortality 30 days after MI. Furthermore, early macrophage depletion produced the greatest negative effect on infarct size and left ventricular remodeling and function, as well as a significant incidence of left ventricular thrombus formation. These deleterious effects were attenuated with macrophage restoration and MSC therapy. CONCLUSIONS Some of the protective effects of MSCs on infarct repair are mediated by macrophages, which are essential for early healing and repair. Thus, targeting macrophages could be a novel strategy to improve infarct healing and repair.
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Ragni E, Viganò M, Parazzi V, Montemurro T, Montelatici E, Lavazza C, Budelli S, Vecchini A, Rebulla P, Giordano R, Lazzari L. Adipogenic potential in human mesenchymal stem cells strictly depends on adult or foetal tissue harvest. Int J Biochem Cell Biol 2013; 45:2456-66. [PMID: 23942228 DOI: 10.1016/j.biocel.2013.07.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 07/08/2013] [Accepted: 07/31/2013] [Indexed: 12/25/2022]
Abstract
Cell-based therapies promise important developments for regenerative medicine purposes. Adipose tissue and the adipogenic process has become central to an increasing number of translational efforts in addition to plastic and reconstructive surgical applications. In recent experimental clinical trials, human mesenchymal stem cells (MSC) have been proven to be well tolerated because of their low immunoreactivity. MSC are multipotent cells found among mature cells in different tissues and organs with the potentiality to differentiate in many cell types, including osteocytes, chondrocytes and adipocytes, thus being a suitable cell source for tissue engineering strategies. We compared the adipogenic potential of MSC originated from two adult sources as fat pads and bone marrow, and from four foetal sources as umbilical cord blood, Wharton's jelly, amniotic fluid and preterm umbilical cord perivascular cells. Surprisingly, adult MSC displayed higher differentiation capacities confirmed by gene expression analysis on a selected panel of adipogenesis-related genes. Further, an in-depth molecular analysis highlighted the early and vigorous activation of the PPARγ transcription factor-cascade in adipose-derived MSC that resulted to be both delayed and reduced in foetal MSC accounting for their lack of adipogenic potential. Thus, MSC show a different degree of phenotypic plasticity depending on the source tissue, that should be taken into consideration for the selection of the most appropriate MSC type for specific tissue regeneration purposes.
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Affiliation(s)
- Enrico Ragni
- Cell Factory "Franco Calori", Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Via F. Sforza 35, 20122 Milano, Italy.
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Anelli L, Zagaria A, Coccaro N, Tota G, Impera L, Minervini CF, Pastore D, Minervini A, Casieri P, Specchia G, Albano F. A novel t(4;16)(q25;q23.1) associated with EGF and ELOVL6 deregulation in acute myeloid leukemia. Gene 2013; 529:144-7. [PMID: 23933272 DOI: 10.1016/j.gene.2013.07.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 07/25/2013] [Accepted: 07/31/2013] [Indexed: 11/27/2022]
Abstract
About 50% of acute myeloid leukemia (AML) patients show the occurrence of non-random chromosome rearrangements. Most of the recurrent karyotypic rearrangements in AML have been defined as distinct disease entities in the 2008 World Health Organization (WHO) classification. In this paper we report an AML case showing a novel t(4;16)(q25;q23.1) rearrangement causing the activation of epidermal growth factor (EGF) and elongation of long-chain fatty acids family member 6 (ELOVL6) genes, rather than the generation of a novel fusion gene.
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Affiliation(s)
- Luisa Anelli
- Department of Emergency and Organ Transplantation (D.E.T.O.), Hematology Section, University of Bari, 70124 Bari, Italy
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Alvarez-Twose I, Zanotti R, González-de-Olano D, Bonadonna P, Vega A, Matito A, Sánchez-Muñoz L, Morgado JM, Perbellini O, García-Montero A, De Matteis G, Teodósio C, Rossini M, Jara-Acevedo M, Schena D, Mayado A, Zamò A, Mollejo M, Sánchez-López P, Cabañes N, Orfao A, Escribano L. Nonaggressive systemic mastocytosis (SM) without skin lesions associated with insect-induced anaphylaxis shows unique features versus other indolent SM. J Allergy Clin Immunol 2013; 133:520-8. [PMID: 23921094 DOI: 10.1016/j.jaci.2013.06.020] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [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: 03/19/2013] [Revised: 06/06/2013] [Accepted: 06/17/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Indolent systemic mastocytosis (ISM) without skin lesions (ISMs(-)) shows a higher prevalence in males, lower serum baseline tryptase levels, and KIT mutation more frequently restricted to bone marrow (BM) mast cells (MCs) than ISM with skin lesions (ISMs(+)). Interestingly, in almost one-half of ISMs(-) patients, MC-mediator release episodes are triggered exclusively by insects. OBJECTIVE We aimed to determine the clinical and laboratory features of ISMs(-) associated with insect-induced anaphylaxis (insectISMs(-)) versus other patients with ISM. METHODS A total of 335 patients presenting with MC activation syndrome, including 143 insectISMs(-), 72 ISMs(-) triggered by other factors (otherISMs(-)), 56 ISMs(+), and 64 nonclonal MC activation syndrome, were studied. RESULTS Compared with otherISMs(-) and ISMs(+) patients, insectISMs(-) cases showed marked male predominance (78% vs 53% and 46%; P < .001), a distinct pattern of MC-related symptoms, and significantly lower median serum baseline tryptase levels (22.4 vs 28.7 and 45.8 μg/L; P ≤ .009). Moreover, insectISMs(-) less frequently presented BM MC aggregates (46% vs 70% and 81%; P ≤ .001), and they systematically showed MC-restricted KIT mutation. CONCLUSIONS ISMs(-) patients with anaphylaxis triggered exclusively by insects display clinical and laboratory features that are significantly different from other ISM cases, including other ISMs(-) and ISMs(+) patients, suggesting that they represent a unique subgroup of ISM with a particularly low BM MC burden in the absence of adverse prognostic factors.
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Affiliation(s)
- Iván Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain.
| | - Roberta Zanotti
- Section of Haematology, Department of Medicine, University of Verona, Verona, Italy; Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy
| | - David González-de-Olano
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Allergy Unit, Hospital de Fuenlabrada, Madrid, Spain
| | - Patrizia Bonadonna
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Allergy Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Arantza Vega
- Allergy Department, Hospital de Guadalajara, Guadalajara, Spain
| | - Almudena Matito
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - Laura Sánchez-Muñoz
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - José Mário Morgado
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - Omar Perbellini
- Section of Haematology, Department of Medicine, University of Verona, Verona, Italy; Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy
| | - Andrés García-Montero
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Giovanna De Matteis
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Clinical Chemistry and Haematology, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Cristina Teodósio
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Maurizio Rossini
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Section of Rheumatology, Department of Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - María Jara-Acevedo
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Donatella Schena
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Section of Dermatology, Department of Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Andrea Mayado
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Alberto Zamò
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Department of Pathology, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Manuela Mollejo
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Pathology Department, Hospital Virgen de la Salud, Toledo, Spain
| | | | | | - Alberto Orfao
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Luis Escribano
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
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Boatman S, Barrett F, Satishchandran S, Jing L, Shestopalov I, Zon LI. Assaying hematopoiesis using zebrafish. Blood Cells Mol Dis 2013; 51:271-6. [PMID: 23916372 DOI: 10.1016/j.bcmd.2013.07.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 07/02/2013] [Indexed: 11/26/2022]
Abstract
The zebrafish has become a commonly used model for studying hematopoiesis as a result of its unique attributes. Zebrafish are highly suitable for large-scale genetic and chemical screens compared to other vertebrate systems. It is now possible to analyze hematopoietic lineages in zebrafish and validate cell function via transplantation assays. Here, we review advancements over the past decade in forward genetic screens, chemical screens, fluorescence-activated cell sorting analysis, and transplantation assays. Integrating these approaches enables new chemical and genetic screens that assay cell function within the hematopoietic system. Studies in zebrafish will continue to contribute and expand our knowledge about hematopoiesis, and develop novel treatments for clinical applications.
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Affiliation(s)
- Sonja Boatman
- Stem Cell Program and Division of Hematology/Oncology, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
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Ortega M, Mallo M, Solé F, Sánchez-Morata C, López-Andreoni L, Martínez-Morgado N, Gironella M, Valcárcel D, Vallespí T. 5q- syndrome and multiple myeloma diagnosed simultaneously and successful treated with lenalidomide. Leuk Res 2013; 37:1248-50. [PMID: 23891188 DOI: 10.1016/j.leukres.2013.06.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 06/17/2013] [Accepted: 06/18/2013] [Indexed: 12/01/2022]
Abstract
A 72-year-old woman was diagnosed with 5q- myelodysplastic syndrome in the course of an indolent multiple myeloma (MM). Bone marrow (BM) cytogenetics disclosed two unrelated clones: 46,XX,del(5)(q13q33), and [47,X,-X,der(1;21)(q10;q10),-4,-4,+5,del(5)(q13q31),+7,der(7)t(1;7)(p34.2;p22),add(8)(p23),-13,+15,der(16) t(1;16)(q23;q12.2),+19,-21,+mar1,+mar2]. The last complex karyotype belonged to malignant plasma cells. FISH and SKY techniques demonstrated different 5q deletions. EGR1 gene (on 5q31) lost in 5q- syndrome remained in 5q- plasma cells. Biclonal evolution was noted: myeloid 5q- cells added a deletion 13q and plasma cells showed monosomy 13. Patient achieved complete cytogenetic response of 5q- syndrome with low-dose of lenalidomide, and a partial remission of MM with high-dose of lenalidomide/dexamethasone combination.
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Affiliation(s)
- Margarita Ortega
- Unidad de Citogenética Hematológica, Hospital Universitario Vall d'Hebrón, Spain
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Grossman I, Alon A, Ilani T, Fass D. An inhibitory antibody blocks the first step in the dithiol/disulfide relay mechanism of the enzyme QSOX1. J Mol Biol 2013; 425:4366-78. [PMID: 23867277 DOI: 10.1016/j.jmb.2013.07.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/09/2013] [Indexed: 01/01/2023]
Abstract
Quiescin sulfhydryl oxidase 1 (QSOX1) is a catalyst of disulfide bond formation that undergoes regulated secretion from fibroblasts and is over-produced in adenocarcinomas and other cancers. We have recently shown that QSOX1 is required for incorporation of particular laminin isoforms into the extracellular matrix (ECM) of cultured fibroblasts and, as a consequence, for tumor cell adhesion to and penetration of the ECM. The known role of laminins in integrin-mediated cell survival and motility suggests that controlling QSOX1 activity may provide a novel means of combating metastatic disease. With this motivation, we developed a monoclonal antibody that inhibits the activity of human QSOX1. Here, we present the biochemical and structural characterization of this antibody and demonstrate that it is a tight-binding inhibitor that blocks one of the redox-active sites in the enzyme, but not the site at which de novo disulfides are generated catalytically. Sulfhydryl oxidase activity is thus prevented without direct binding of the sulfhydryl oxidase domain, confirming the model for the interdomain QSOX1 electron transfer mechanism originally surmised based on mutagenesis and protein dissection. In addition, we developed a single-chain variant of the antibody and show that it is a potent QSOX1 inhibitor. The QSOX1 inhibitory antibody will be a valuable tool in studying the role of ECM composition and architecture in cell migration, and the recombinant version may be further developed for potential therapeutic applications based on manipulation of the tumor microenvironment.
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Affiliation(s)
- Iris Grossman
- Department of Structural Biology, Weizmann Institute of Science, Rehovot 76100, Israel
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50
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Bai L, Shi G, Zhang X, Dong W, Zhang L. Transgenic expression of BRCA1 disturbs hematopoietic stem and progenitor cells quiescence and function. Exp Cell Res 2013; 319:2739-46. [PMID: 23850973 DOI: 10.1016/j.yexcr.2013.06.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/19/2013] [Accepted: 06/22/2013] [Indexed: 10/26/2022]
Abstract
The balance between quiescence and proliferation of HSCs is an important regulator of hematopoiesis. Loss of quiescence frequently results in HSCs exhaustion, which underscores the importance of tight regulation of proliferation in these cells. Studies have indicated that cyclin-dependent kinases are involved in the regulation of quiescence in HSCs. BRCA1 plays an important role in the repair of DNA double-stranded breaks, cell cycle, apoptosis and transcription. BRCA1 is expressed in the bone marrow. However, the function of BRCA1 in HSCs is unknown. In our study, we generated BRCA1 transgenic mice to investigate the effects of BRCA1 on the mechanisms of quiescence and differentiation in HSCs. The results demonstrate that over-expression of BRCA1 in the bone marrow impairs the development of B lymphocytes. Furthermore, BRCA1 induced an increase in the number of LSKs, LT-HSCs, ST-HSCs and MPPs. A competitive transplantation assay found that BRCA1 transgenic mice failed to reconstitute hematopoiesis. Moreover, BRCA1 regulates the expression of p21(waf1)/cip1 and p57(kip2), which results in a loss of quiescence in LSKs. Together, over-expression of BRCA1 in bone marrow disrupted the quiescent of LSKs, induced excessive accumulation of LSKs, and disrupted differentiation of the HSCs, which acts through the down-regulated of p21(waf1)/cip1 and p57(kip2).
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Affiliation(s)
- Lin Bai
- Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences & Comparative Medical Center, Peking Union Medical College, Chao Yang Strict, Pan Jia Yuan Nan Li No.5, Beijing 100021, China
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