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Wu PY, Wang T, Chen BJ, Shi MK, Huang B, Wu ND, Qi L, Chang XF, Wang LF, Liu BR, Ren W. [Efficacy and safety of neoadjuvant chemotherapy combined with PD-1 antibody for esophageal squamous cell carcinoma in the real world]. Zhonghua Zhong Liu Za Zhi 2023; 45:170-174. [PMID: 36781239 DOI: 10.3760/cma.j.cn112152-20210806-00586] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Objective: To evaluate the efficacy and safety of neoadjuvant chemotherapy combined with programmed death-1 (PD-1) antibody in operable, borderline or potentially resectable locally advanced esophageal squamous cell carcinoma(ESCC) in the real world. Methods: The study retrospectively analyzed 28 patients with operable or potentially resectable locally advanced ESCC patients treated with preoperative chemotherapy combined with PD-1 inhibitor in Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School from April 2020 to March 2021. According to the clinical TNM staging system of the 8th edition of the American Joint Committee on Cancer, there were 1, 15, 10, 1 and 1 case of stage Ⅱ, Ⅲ, ⅣA, ⅣB and unknown stage respectively. The treatment was two cycle of dual drug chemotherapy regimen including taxane plus platinum or fluorouracil combined with PD-1 antibody followed by tumor response assessment and surgery if the patient was eligible for resection. Results: Of the 28 patients, 1, 2, 3 and 4 cycles of chemotherapy combined with PD-1 antibody treatment completed in 1, 21, 5, and 1 patient, respectively. Objective response rate (ORR) was 71.4% (20/28), and disease control rate (DCR) was 100% (28/28). The incidence of adverse events exceeding grade 3 levels was 21.4% (6/28), including 3 neutropenia, 1 leukopenia, 1 thrombocytopenia and 1 immune hepatitis. There was no treatment-related death. Of the 23 patients underwent surgery, R0 resection rate was 87.0% (20/23), 13 patients had down staged to the T1-2N0M0 I stage, the pCR rate was 17.3% (4/23), and the pCR rate of primary tumor was 21.7% (5/23). Four patients received definitive chemoradiotherapy. One patient rejected surgery and other treatment after achieved PR response. Conclusion: Neoadjuvant chemotherapy combined PD-1 inhibitor is safe and has high efficacy in operable, borderline or potentially resectable locally advanced ESCC, and it is a promising regimen.
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Affiliation(s)
- P Y Wu
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - T Wang
- Departement of General Thoracic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - B J Chen
- Departement of General Thoracic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - M K Shi
- Departement of General Thoracic Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - B Huang
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - N D Wu
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - L Qi
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - X F Chang
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - L F Wang
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - B R Liu
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - W Ren
- The Comprehensive Cancer Center of Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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Holmes ZC, Tang H, Liu C, Bush A, Neubert BC, Jiao Y, Covington M, Cardona DM, Kirtley MC, Chen BJ, Chao NJ, David LA, Sung AD. Prebiotic galactooligosaccharides interact with mouse gut microbiota to attenuate acute graft-versus-host disease. Blood 2022; 140:2300-2304. [PMID: 35930748 PMCID: PMC10653043 DOI: 10.1182/blood.2021015178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 07/18/2022] [Indexed: 11/20/2022] Open
Abstract
Previous studies suggest that gut microbiome disruption induced by chemotherapy, dietary deficiencies, and/or antibiotics are associated with increased incidence of acute graft-versus-host disease (aGVHD) following hematopoietic stem cell transplantation (HSCT). In a murine model of antibiotic-induced gut microbiome disruption, Holmes and colleagues show that oral administration of galactooligosaccharides (GOS) as a prebiotic attenuates lethal aGVHD, highlighting the crosstalk between diet and gut microbiota. Their data encourage clinical trials of GOS prebiotic diets during HSCT.
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Affiliation(s)
- Zachary C. Holmes
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC
| | - Helen Tang
- Duke University School of Medicine, Durham, NC
| | - Congxiao Liu
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
| | - Amy Bush
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
| | - Benjamin C. Neubert
- Program in Computational Biology and Bioinformatics, Duke University, Durham, NC
| | - Yiqun Jiao
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
| | - Megan Covington
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
| | | | - Michelle C. Kirtley
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC
| | - Benny J. Chen
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
- Duke Cancer Institute, Durham, NC
| | - Nelson J. Chao
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
- Duke Cancer Institute, Durham, NC
| | - Lawrence A. David
- Department of Molecular Genetics and Microbiology, Duke University, Durham, NC
- Duke University School of Medicine, Durham, NC
- Program in Computational Biology and Bioinformatics, Duke University, Durham, NC
- Center for Genomic and Computational Biology, Duke University, Durham, NC
- Duke Microbiome Center, Duke University, Durham, NC
| | - Anthony D. Sung
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC
- Duke Cancer Institute, Durham, NC
- Duke Microbiome Center, Duke University, Durham, NC
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3
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Su H, Imai K, Jia W, Li Z, DiCioccio RA, Serody JS, Poe JC, Chen BJ, Doan PL, Sarantopoulos S. Alphavirus Replicon Particle Vaccine Breaks B Cell Tolerance and Rapidly Induces IgG to Murine Hematolymphoid Tumor Associated Antigens. Front Immunol 2022; 13:865486. [PMID: 35686131 PMCID: PMC9171395 DOI: 10.3389/fimmu.2022.865486] [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: 01/29/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
De novo immune responses to myeloid and other blood-borne tumors are notably limited and ineffective, making our ability to promote immune responses with vaccines a major challenge. While focus has been largely on cytotoxic cell-mediated tumor eradication, B-cells and the antibodies they produce also have roles in anti-tumor responses. Indeed, therapeutic antibody-mediated tumor cell killing is routinely employed in patients with hematolymphoid cancers, but whether endogenous antibody responses can be incited to blood-born tumors remains poorly studied. A major limitation of immunoglobulin therapies is that cell surface expression of tumor-associated antigen (TAA) targets is dynamic and varied, making promotion of polyclonal, endogenous B cell responses appealing. Since many TAAs are self-antigens, developing tumor vaccines that enable production of antibodies to non-polymorphic antigen targets remains a challenge. As B cell responses to RNA vaccines are known to occur, we employed the Viral Replicon Particles (VRP) which was constructed to encode mouse FLT3. The VRP-FLT3 vaccine provoked a rapid IgG B-cell response to this self-antigen in leukemia and lymphoma mouse models. In addition, IgGs to other TAAs were also produced. Our data suggest that vaccination with RNA viral particle vectors incites a loss of B-cell tolerance that enables production of anti-tumor antibodies. This proof of principle work provides impetus to employ such strategies that lead to a break in B-cell tolerance and enable production of broadly reactive anti-TAA antibodies as potential future therapeutic agents for patients with hematolymphoid cancers.
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Affiliation(s)
- Hsuan Su
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Kazuhiro Imai
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Department of Thoracic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Wei Jia
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Zhiguo Li
- Biostatistics and Bioinformatics, Basic Science Department, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Rachel A DiCioccio
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Jonathan S Serody
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jonathan C Poe
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Benny J Chen
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Phuong L Doan
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Stefanie Sarantopoulos
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States.,Department of Immunology, School of Medicine, Duke University , Durham, NC, United States
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Huang Y, Zou Y, Jiao Y, Shi P, Nie X, Huang W, Xiong C, Choi M, Huang C, Macintyre AN, Nichols A, Li F, Li CY, MacIver NJ, Cardona D, Brennan TV, Li Z, Chao NJ, Rathmell J, Chen BJ. Targeting Glycolysis in Alloreactive T Cells to Prevent Acute Graft- Versus-Host Disease While Preserving Graft-Versus-Leukemia Effect. Front Immunol 2022; 13:751296. [PMID: 35296079 PMCID: PMC8920494 DOI: 10.3389/fimmu.2022.751296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 02/03/2022] [Indexed: 02/02/2023] Open
Abstract
Alloreactive donor T cells undergo extensive metabolic reprogramming to become activated and induce graft-versus-host disease (GVHD) upon alloantigen encounter. It is generally thought that glycolysis, which promotes T cell growth and clonal expansion, is employed in this process. However, conflicting data have been reported regarding the requirement of glycolysis to induce T cell-mediated GVHD due to the lack of T cell-specific treatments using glycolysis inhibitors. Importantly, previous studies have not evaluated whether graft-versus-leukemia (GVL) activity is preserved in donor T cells deficient for glycolysis. As a critical component affecting the clinical outcome, it is necessary to assess the anti-tumor activity following treatment with metabolic modulators in preclinical models. In the present study, we utilized T cells selectively deficient for glucose transporter 1 (Glut1T-KO), to examine the role of glycolysis exclusively in alloreactive T cells without off-targeting effects from antigen presenting cells and other cell types that are dependent on glycolysis. We demonstrated that transfer of Glut1T-KO T cells significantly improved acute GVHD outcomes through increased apoptotic rates, impaired expansion, and decreased proinflammatory cytokine production. In addition to impaired GVHD development, donor Glut1T-KO T cells mediated sufficient GVL activity to protect recipients from tumor development. A clinically relevant approach using donor T cells treated with a small molecule inhibitor of glycolysis, 2-Deoxy-D-glucose ex vivo, further demonstrated protection from tumor development. These findings indicate that treatment with glycolysis inhibitors prior to transplantation selectively eliminates alloreactive T cells, but spares non-alloreactive T cells including those that protect against tumor growth. The present study has established a definitive role for glycolysis in acute GVHD and demonstrated that acute GVHD can be selectively prevented through targeting glycolysis.
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Affiliation(s)
- Ying Huang
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Yujing Zou
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Yiqun Jiao
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Peijie Shi
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Xiaoli Nie
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Wei Huang
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Chuanfeng Xiong
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Michael Choi
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Charles Huang
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States
| | - Andrew N. Macintyre
- Departments of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States
| | - Amanda Nichols
- Department of Pediatrics, Duke University Medical Center, Durham, NC, United States
| | - Fang Li
- Department of Dermatology, Duke University Medical Center, Durham, NC, United States
| | - Chuan-Yuan Li
- Departments of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States,Department of Dermatology, Duke University Medical Center, Durham, NC, United States,Duke Cancer Institute, Duke University Medical Center, Durham, NC, United States
| | - Nancie J. MacIver
- Departments of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States,Department of Pediatrics, Duke University Medical Center, Durham, NC, United States,Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Diana M. Cardona
- Department of Pathology, Duke University Medical Center, Durham, NC, United States
| | - Todd V. Brennan
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Zhiguo Li
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, NC, United States
| | - Nelson J. Chao
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States,Duke Cancer Institute, Duke University Medical Center, Durham, NC, United States,Department of Immunology, Duke University Medical Center, Durham, NC, United States,Department of Pathology, Duke University Medical Center, Durham, NC, United States
| | - Jeffrey C. Rathmell
- Vanderbilt Center for Immunobiology, Departments of Pathology, Microbiology, and Immunology, Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Benny J. Chen
- Division of Hematologic Malignancies and Cellular Therapy/Bone Marrow Transplantation (BMT), Department of Medicine, Duke University Medical Center, Durham, NC, United States,Duke Cancer Institute, Duke University Medical Center, Durham, NC, United States,*Correspondence: Benny J. Chen,
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5
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Sun MY, Chen BJ, Li H, Wang XP, Qin S, Tang SH. [Analysis of prognosis-related factors in patients with hepatitis B virus-related acute-on-chronic liver failure]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:983-986. [PMID: 34814393 DOI: 10.3760/cma.j.cn501113-20200630-00354] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the prognosis-related factors and its predictive value in patients with hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF). Methods: Sixty-three cases with HBV-ACLF were enrolled. According to the prognosis of 4-weeks, patients were divided into survival and death group. Univariate and multivariate analyses were performed on the clinical data of the two groups of patients to screen the risk factors affecting prognosis, evaluate its predictive value, and compare them with the MELD score, CTP score, and CLIFACLF score. The data were analyzed using t-test, Mann-Whitney U test, χ (2) test. Multiple logistic regression analysis was used for multiple risk factors. Results: There were 63 cases with HBV-ACLF, with 16 cases (25.40%) in the 4-week survival group, and 47 cases (74.60%) in the death group. The survival group age was 38.38 ± 14.50 years, which was significantly lower than the age of the death group 52.28 ± 12.51 years (P < 0.001). The survival group alpha-fetoprotein (AFP) level was 91.21 (8.38 ~ 154.10)μg/L, which was significantly higher than the level of the death group [12.60 (5.70 ~ 33.80) μg/L, P = 0.039]. The survival group alanine aminotransferase (ALT) level was 925.65 (523.43 ~ 1 364.80) U/L, which was much higher than that of the death group [371.60 (117.30 ~ 895.30) U/L, P = 0.040]. The survival group serum sodium level was (136.59 ± 4.03) mmol /L, which was significantly higher than the level of the death group [(132.22 ± 6.37) mmol/L, P = 0.013]. The survival group ascites severity level was much lower than that of the death group (P = 0.008). The survival group creatinine level was 56.50(49.43 ~ 86.25) μmol/L, which was much lower than the level of the death group [86.20 (68.00 ~ 143.00) μmol/L, P = 0.003]. Multivariate logistic regression analysis showed that ascites (OR = 0.470, 95% CI: 0.226 ~ 0.977) and age (OR = 0.941, 95% CI: 0.888 ~ 0.996) were risk factors affecting the HBV-ACLF prognosis. The area under the curve predicted liver failure prognostic score for ascites and age was 0.821, and the sensitivity and specificity were 68.8% and 87.2%, which was higher than the area under the curve predicted by the MELD score, CTP score, and CLIFACLF score, respectively. Conclusion: Age and ascites can be used to predict the clinical outcome in patients with HBV-ACLF. Younger patients without ascites have a higher survival rate at 4-weeks, but older patients with ascites are more likely to have a lower survival rate.
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Affiliation(s)
- M Y Sun
- College of Medicine, Southwest Jiaotong University, Chengdu 610083, China; Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - B J Chen
- Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - H Li
- Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - X P Wang
- College of Medicine, Southwest Jiaotong University, Chengdu 610083, China; Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - S Qin
- College of Medicine, Southwest Jiaotong University, Chengdu 610083, China; Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
| | - S H Tang
- College of Medicine, Southwest Jiaotong University, Chengdu 610083, China; Department of Gastroenterology, the General Hospital of Western Theater Command, Chengdu 610083, China
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6
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Chen BJ, Li J, Wang JD, Cheng YS, Xu YN, Xue M. [Parotid nuclear protein in testis midline carcinoma: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:510-513. [PMID: 34011009 DOI: 10.3760/cma.j.cn115330-20201103-00853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B J Chen
- Department of Head and Neck Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - J Li
- Department of Oral Pathology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - J D Wang
- Department of Head and Neck Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - Y S Cheng
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200085, China
| | - Y N Xu
- Department of Head and Neck Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China
| | - M Xue
- Department of Otorhinolaryngology Head and Neck Surgery, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200085, China
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Maung KK, Chen BJ, Barak I, Li Z, Rizzieri DA, Gasparetto C, Sullivan KM, Long GD, Engemann AM, Waters-Pick B, Nichols KR, Lopez R, Kang Y, Sarantopoulos S, Sung AD, Chao NJ, Horwitz ME. Phase I dose escalation study of naive T-cell depleted donor lymphocyte infusion following allogeneic stem cell transplantation. Bone Marrow Transplant 2021; 56:137-143. [PMID: 32624583 PMCID: PMC10805111 DOI: 10.1038/s41409-020-0991-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 06/10/2020] [Accepted: 06/25/2020] [Indexed: 11/09/2022]
Abstract
Prophylactic donor lymphocyte infusions (DLI) are used to augment post-transplant immune recovery to reduce both infectious complications and disease recurrence. Preclinical studies implicate the naive T-cell subset as the primary driver of graft-versus-host disease (GvHD). In this phase I dose escalation study, we assessed the safety of a DLI that was depleted of CD45RA+ naive T cells. Sixteen adult patients received a prophylactic DLI at a median of 113 days (range 76-280 days) following an HLA-identical, non-myeloablative allogeneic hematopoietic stem cell transplantation. Three patients each received the naive T-cell depleted DLI with a CD3+ dose of 1 × 105/kg, 1 × 106/kg, and 5 × 106/kg. The maximum dose of 1 × 107/kg was expanded to 7 patients. No dose-limiting grade III/IV acute GvHD or adverse events attributable to the DLI were observed at any dose level. One patient developed grade 2 acute GvHD of skin and upper intestines, and another developed moderate chronic GvHD of the lungs following the DLI. With a median follow-up of 2.8 years, 2-year progression-free and overall survival is 50.0% and 68.8%, respectively. In conclusion, these data suggest that a DLI that has been depleted of CD45RA+ naive T cells is feasible and carries a low risk of acute or chronic GvHD.
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Affiliation(s)
- Ko K Maung
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Benny J Chen
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Ian Barak
- Cancer Center Biostatistics, Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA
| | - Zhiguo Li
- Cancer Center Biostatistics, Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA
| | - David A Rizzieri
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Cristina Gasparetto
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Keith M Sullivan
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Gwynn D Long
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Ashley M Engemann
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Barbara Waters-Pick
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Krista Rowe Nichols
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Richard Lopez
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Yubin Kang
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Stefanie Sarantopoulos
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Anthony D Sung
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA
| | - Mitchell E Horwitz
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, USA.
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8
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Sung AD, Yen RC, Jiao Y, Bernanke A, Lewis DA, Miller SE, Li Z, Ross JR, Artica A, Piryani S, Zhou D, Liu Y, Vo-Dinh T, Hoffman M, Ortel TL, Chao NJ, Chen BJ. Fibrinogen-Coated Albumin Nanospheres Prevent Thrombocytopenia-Related Bleeding. Radiat Res 2020; 194:162-172. [PMID: 32845987 DOI: 10.1667/rade-20-00016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 05/07/2020] [Indexed: 11/03/2022]
Abstract
Thrombocytopenia (TCP) may cause severe and life-threatening bleeding. While this may be prevented by platelet transfusions, transfusions are associated with potential complications, do not always work (platelet refractory) and are not always available. There is an urgent need for a synthetic alternative. We evaluated the ability of fibrinogen-coated nanospheres (FCNs) to prevent TCP-related bleeding. FCNs are made of human albumin polymerized into a 100-nm sphere and coated with fibrinogen. We hypothesized that FCNs would bind to platelets through fibrinogen-GPIIb/IIIa interactions, contributing to hemostasis in the setting of TCP. We used two murine models to test these effects: in the first model, BALB/c mice received 7.25 Gy total-body irradiation (TBI); in the second model, lower dose TBI (7.0 Gy) was combined with an anti-platelet antibody (anti-CD41) to induce severe TCP. Deaths in both models were due to gastrointestinal or intracranial bleeding. Addition of antiplatelet antibody to 7.0 Gy TBI significantly worsened TCP and increased mortality compared to 7.0 Gy TBI alone. FCNs significantly improved survival compared to saline control in both models, suggesting it ameliorated TCP-related bleeding. Additionally, in a saphenous vein bleeding model of antibody-induced TCP, FCNs shortened bleeding times. There were no clinical or histological findings of thrombosis or laboratory findings of disseminated intravascular coagulation after FCN treatment. In support of safety, fluorescence microscopy suggests that FCNs bind to platelets only upon platelet activation with collagen, limiting activity to areas of endothelial damage. To our knowledge, this is the first biosynthetic agent to demonstrate a survival advantage in TCP-related bleeding.
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Affiliation(s)
- Anthony D Sung
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | | | - Yiqun Jiao
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | | | | | | | - Zhiguo Li
- Department of Biostatistics & Bioinformatics
| | - Joel R Ross
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | - Alexandra Artica
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | - Sadhna Piryani
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | - Dunhua Zhou
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | - Yang Liu
- Department of Biomedical Engineering, Pratt School of Engineering
| | - Tuan Vo-Dinh
- Department of Biomedical Engineering, Pratt School of Engineering.,Department of Chemistry, Duke University, Durham, North Carolina
| | | | - Thomas L Ortel
- Division of Hematology, Department of Medicine.,Department of Pathology
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
| | - Benny J Chen
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, and Duke Cancer Institute
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9
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Chen BJ, Li YD, Feng CD, Zhang HM, Yan C, Xiao WB. Theoretical studies of the g factors and local structures of the Ni 3+ centers in Na 2 Zn(SO 4 ) 2 ·4H 2 O and K 2 Zn(SO 4 ) 2 ·6H 2 O crystals. Magn Reson Chem 2020; 58:921-928. [PMID: 32391937 DOI: 10.1002/mrc.5039] [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] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/01/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The local structures and the g factors gi (i = x, y, z) for Ni3+ centers in Na2 Zn(SO4 )2 ·4H2 O (DPPH) and K2 Zn(SO4 )2 ·6H2 O (PHZS) crystals are theoretically studied by using the perturbation formulas of the g factors for a 3d7 ion with low spin (S = 1/2) in orthorhombically compressed octahedra. In these formulas, the contributions to g factors from both the spin-orbit coupling interactions of the central ion and ligands are taken into account, and the required crystal-field parameters are estimated from the superposition model and the local geometry of the systems. Based on the calculations, the Ni-O bonds are found to suffer the axial compression δz (or Δz) of about 0.111 Å (or 0.036 Å) along the z-axis for Ni3+ centers in DPPH (or PHZS) crystals. Meanwhile, the Ni-O bonds may experience additional planar bond length variation δx (≈0.015 Å) along x- and y-axes for the orthorhombic Ni3+ center in DPPH. The theoretical g factors agree well with the experimental data. The obtained local structural parameters for both Ni3+ centers are discussed.
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Affiliation(s)
- B J Chen
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
| | - Y D Li
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
| | - C D Feng
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
| | - H M Zhang
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
| | - C Yan
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
| | - W B Xiao
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
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10
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Tang YJ, Huang J, Tsushima H, Ban GI, Zhang H, Oristian KM, Puviindran V, Williams N, Ding X, Ou J, Jung SH, Lee CL, Jiao Y, Chen BJ, Kirsch DG, Alman BA. Tracing Tumor Evolution in Sarcoma Reveals Clonal Origin of Advanced Metastasis. Cell Rep 2020; 28:2837-2850.e5. [PMID: 31509746 PMCID: PMC6750751 DOI: 10.1016/j.celrep.2019.08.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 11/21/2018] [Revised: 04/17/2019] [Accepted: 08/05/2019] [Indexed: 11/03/2022] Open
Abstract
Cellular heterogeneity is frequently observed in cancer, but the biological significance of heterogeneous tumor clones is not well defined. Using multicolor reporters and CRISPR-Cas9 barcoding, we trace clonal dynamics in a mouse model of sarcoma. We show that primary tumor growth is associated with a reduction in clonal heterogeneity. Local recurrence of tumors following surgery or radiation therapy is driven by multiple clones. In contrast, advanced metastasis to the lungs is driven by clonal selection of a single metastatic clone (MC). Using RNA sequencing (RNA-seq) and in vivo assays, we identify candidate suppressors of metastasis, namely, Rasd1, Reck, and Aldh1a2. These genes are downregulated in MCs of the primary tumors prior to the formation of metastases. Overexpression of these suppressors of metastasis impair the ability of sarcoma cells to colonize the lungs. Overall, this study reveals clonal dynamics during each step of tumor progression, from initiation to growth, recurrence, and distant metastasis.
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Affiliation(s)
- Yuning J Tang
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Jianguo Huang
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC, USA
| | - Hidetoshi Tsushima
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Ga I Ban
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Hongyuan Zhang
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA; Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Kristianne M Oristian
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - Vijitha Puviindran
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Nerissa Williams
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC, USA
| | - Xiruo Ding
- Department of Biostatics and Bioinformatics, Duke University, Durham, NC, USA
| | - Jianhong Ou
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA; Regeneration Next Initiative, Duke University, Durham, NC, USA
| | - Sin-Ho Jung
- Department of Biostatics and Bioinformatics, Duke University, Durham, NC, USA
| | - Chang-Lung Lee
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC, USA
| | - Yiqun Jiao
- Duke Cancer Institute, Duke University, Durham, NC, USA
| | - Benny J Chen
- Duke Cancer Institute, Duke University, Durham, NC, USA; Regeneration Next Initiative, Duke University, Durham, NC, USA
| | - David G Kirsch
- Department of Radiation Oncology, Duke University School of Medicine, Durham, NC, USA; Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA; Duke Cancer Institute, Duke University, Durham, NC, USA; Regeneration Next Initiative, Duke University, Durham, NC, USA.
| | - Benjamin A Alman
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA; Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA; Duke Cancer Institute, Duke University, Durham, NC, USA; Regeneration Next Initiative, Duke University, Durham, NC, USA; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
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11
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He F, Yin WC, Chen BJ, Gong JJ, Chen DJ. [Clinical investigation in the methods for complete placenta previa labor induction in the second trimester]. Zhonghua Fu Chan Ke Za Zhi 2020; 55:317-321. [PMID: 32464719 DOI: 10.3760/cma.j.cn112141-20191124-00639] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the appropriate method of labor induction in the second trimester for complete placenta previa patients. Methods: The labor induction outcomes of 85 cases with complete placenta previa in the second trimester were retrospectively analyzed. Twenty patients in group A were treated with cesarean section, 30 patients in group B were treated with ethacridine and mifepristone combined with uterine artery embolization (UAE), and 35 patients in group C were induced by using ethacridine and mifepristone. The clinical features and induction outcomes of three groups were compared. Results: The total duration of labor in group B [(28.7±30.1) hours] was significantly longer than that of group C [(24.3±21.9) hours; P<0.05]. The total amount of blood loss during induction and labor in group B [(302±271) ml] was significantly lower than those of group C [(393±523) ml] and group A [(626±487) ml; P<0.05]. The incidence of fever in group B (13%, 4/30) was significantly higher than those of group C (11%, 4/35) and group A (10%, 2/20; P<0.05). In group C, 13 patients (37%, 13/35) underwent emergency UAE, and 2 patients (6%, 2/35) underwent emergency cesarean section. As to average hemoglobin level and blood transfusion rate, there were no difference among the three groups (all P>0.05). Conclusion: Prophylactic UAE combined with drug induction in patients with complete placenta previa in the second trimester could significantly reduce the amount of bleeding during induction and reduce the risk of emergency procedures.
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Affiliation(s)
- F He
- Department of Obstetrics and Gyneclogy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Critical Care Center of Pregnant Women, Guangzhou 510150, China
| | - W C Yin
- Department of Obstetrics and Gyneclogy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Critical Care Center of Pregnant Women, Guangzhou 510150, China
| | - B J Chen
- Department of Obstetrics and Gyneclogy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Critical Care Center of Pregnant Women, Guangzhou 510150, China
| | - J J Gong
- Department of Obstetrics and Gyneclogy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Critical Care Center of Pregnant Women, Guangzhou 510150, China
| | - D J Chen
- Department of Obstetrics and Gyneclogy, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Critical Care Center of Pregnant Women, Guangzhou 510150, China
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12
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Hung CC, Chen CY, Chen BJ. Colistin and tylosin enhances disaccharidase activities, and improves morphology and permeability of the intestine of broilers. Br Poult Sci 2020; 61:465-470. [PMID: 32216555 DOI: 10.1080/00071668.2020.1747598] [Citation(s) in RCA: 2] [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] [Indexed: 10/24/2022]
Abstract
1. The present study focused on the potential effects of antibiotics on intestinal digestion and integrity in broilers in terms of disaccharidase activity, electrophysiological properties and morphology. 2. One-day-old Arbour Acres birds were randomly allocated to one of four treatment groups for 42 days; control, colistin (20 mg/kg), tylosin (55 mg/kg) or chlortetracycline (CTC, 55 mg/kg) groups. Colistin and tylosin supplementation, but not CTC supplementation, caused an increase in body weight gain. 3. Colistin and tylosin elevated the activities of maltase and sucrase in the mucosa of the jejunum on d 42. Age caused a gradual decrease in the short-circuit current (Isc) and conductance (Gt) of the ileum, as a measure of permeability. The Isc and Gt of the ileum were higher in the colistin-supplemented broilers than in the control birds on d 42. Tylosin- and CTC-supplemented birds displayed Isc and Gt values similar to those of the control birds. 4. Colistin supplementation increased the villus area in the jejunum and thinned the muscularis mucosae in the ileum compared with the control group. Tylosin supplementation decreased the thickness of the muscularis mucosae and the depth of crypt in the jejunum. CTC thickened the muscularis mucosae in the jejunum and ileum. 5. Colistin and tylosin exhibited a beneficial effect on intestinal digestion and integrity by enhancing disaccharidase activities and improving gut morphology and permeability.
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Affiliation(s)
- C C Hung
- Department of Nutrition, Livestock Research Institute, Council of Agriculture , Tainan City, Taiwan
| | - C Y Chen
- Department of Animal Science and Technology, National Taiwan University ; Taipei, Taiwan
| | - B J Chen
- Department of Animal Science and Technology, National Taiwan University ; Taipei, Taiwan
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13
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Zhou Y, Qi C, Xiao MZ, Cai SL, Chen BJ. RASAL2-RET: a novel RET rearrangement in a patient with high-grade sarcoma of the chest. Ann Oncol 2020; 31:659-661. [PMID: 32220490 DOI: 10.1016/j.annonc.2020.01.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/05/2019] [Accepted: 01/29/2020] [Indexed: 11/19/2022] Open
Affiliation(s)
- Y Zhou
- The Cardio-Thoracic Surgery Department, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - C Qi
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - M Z Xiao
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - S L Cai
- The Medical Department, 3D Medicines Inc., Shanghai, China
| | - B J Chen
- The Cardio-Thoracic Surgery Department, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
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14
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Li XY, Xu YN, Chen BJ, Wang JD. [The effect and mechanism of 2-methoxyestradiol on human laryngeal papilloma cell line]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:945-950. [PMID: 31623040 DOI: 10.13201/j.issn.1001-1781.2019.10.011] [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] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Indexed: 11/12/2022]
Abstract
Objective:To explore the signal pathway that mediates the effect of 2-methoxyestradiol(2ME2) on human laryngeal papilloma cell line, in terms of cell proliferation and neovascularization. Method:HIF-1α expression of human laryngeal papilloma cell line(Hs840. T) was interfered using siRNA, and the cells were then processed by 2ME2 in two concentrations. RT-PCR and ELISA were performed to detect the difference of HIF-1α in cells with normal or lower HIF-1α mRNA level, with ELISA test of excretory VEGF level and CCK8 test of cell viability. Result:The IC50of 2ME2 in Hs840. T was 0.309 μmol/L in terms of the inhibition effect of cell proliferation(P<0.01). Baseline level of intracellular HIF-1α was detectable, and procession of Hs840. T cells by 2ME2 of 0.4 μmol/L inhibited the transcription and expression of HIF-1α by(76.8±2.0)% and(68.6±3.5)% [vs blank group(100.0±2.7)% and(100.0±6.9)%, P<0.01]. VEGF excretion decreased to(50.8±2.1) and(28.1±4.0)% [vs blank group(100.0±3.1)%, P<0.01]after procession by 2ME2 of 0.2 μmol/L and 0.4 μmol/L. After the successful interference of HIF-1α by siRNA, the inhibition effect on cell proliferation by 2ME2 of 0.4 μmol/L decreased to(51.5±3.8)% [vs control group(65.7±1.7)%, P<0.01]. siRNA interference of HIF-1α lead to a decrease of HIF-α mRNA and protein level to(16.3±0.9)% and(7.4±0.8)% [vs cells not interfered(76.8±2.0)% vs(68.6±3.5)%, P<0.01]. Secretory VEGF dropped to(41.0±2.9)% [vs cells not interfered(28.1±4.0)%, P<0.05]. Conclusion:2ME2 has a significant inhibitory effect on human laryngeal cell line. The inhibition of cell proliferation was mediated by a lower level of HIF-1α and therefore lower VEGF. 2ME2 might serve as a novel potential therapy for patients of recurrent respiratory papillomatosis.
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Affiliation(s)
- X Y Li
- Department of Head and Neck Surgery,Renji Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200001,China
| | - Y N Xu
- Department of Head and Neck Surgery,Renji Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200001,China
| | - B J Chen
- Department of Head and Neck Surgery,Renji Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200001,China
| | - J D Wang
- Department of Head and Neck Surgery,Renji Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200001,China
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15
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Han W, Chen BJ, Gu B, Zhao GQ, Yu S, Wang XC, Liu QQ, Deng Z, Li WM, Zhao JF, Cao LP, Peng Y, Shen X, Zhu XH, Yu RC, Maekawa S, Uemura YJ, Jin CQ. Li(Cd,Mn)P: a new cadmium based diluted ferromagnetic semiconductor with independent spin & charge doping. Sci Rep 2019; 9:7490. [PMID: 31097727 PMCID: PMC6522530 DOI: 10.1038/s41598-019-43754-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 12/13/2018] [Indexed: 11/09/2022] Open
Abstract
We report a new diluted ferromagnetic semiconductor Li1+y(Cd,Mn)P, wherein carrier is doped via excess Li while spin is doped by isovalence substitution of Mn2+ into Cd2+. The extended Cd 4d-orbitals lead to more itinerant characters of Li1+y(Cd,Mn)P than that of analogous Li1+y(Zn,Mn)P. A higher Curie temperature of 45 K than that for Li1+y(Zn,Mn)P is obtained in Li1+y(Cd,Mn)P polycrystalline samples by Arrott plot technique. The p-type carriers are determined by Hall effect measurements. The first principle calculations and X-ray diffraction measurements indicate that occupation of excess Li is at Cd sites rather than the interstitial site. Consequently holes are doped by excess Li substitution. More interestingly Li1+y(Cd,Mn)P shows a very low coercive field (<100 Oe) and giant negative magnetoresistance (~80%) in ferromagnetic state that will benefit potential spintronics applications.
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Affiliation(s)
- W Han
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China.,Department of Physics and Electronic Engineering, Hebei Normal University for Nationalities, Chengde, 067000, China
| | - B J Chen
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - B Gu
- Kavli Institute for Theoretical Sciences & CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China.,Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, 319-1195, Japan
| | - G Q Zhao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - S Yu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - X C Wang
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Q Q Liu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Z Deng
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. .,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - W M Li
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - J F Zhao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - L P Cao
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Y Peng
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.,Department of Materials Science & Engineering, Sichuan University, Chengdu, China
| | - X Shen
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - X H Zhu
- Department of Materials Science & Engineering, Sichuan University, Chengdu, China
| | - R C Yu
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - S Maekawa
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, 319-1195, Japan
| | - Y J Uemura
- Department of Physics, Columbia University, New York, New York, 10027, USA
| | - C Q Jin
- Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. .,School of Physics, University of Chinese Academy of Sciences, Beijing, 100190, China. .,Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China.
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16
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Liu Y, Huang W, Xiong C, Huang Y, Chen BJ, Racioppi L, Chao N, Vo-Dinh T. Biodistribution and sensitive tracking of immune cells with plasmonic gold nanostars. Int J Nanomedicine 2019; 14:3403-3411. [PMID: 31190799 PMCID: PMC6514259 DOI: 10.2147/ijn.s192189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/13/2019] [Indexed: 12/13/2022] Open
Abstract
Aim: To quantitatively and sensitively investigate the biodistribution of immune cells after systemic administration. Methods: Immune cells were loaded with plasmonic gold nanostars (GNS) tracking probes. Inductively coupled plasma mass spectrometry (ICP-MS) was used for quantitative gold mass measurement and two-photon photoluminescence (TPL) was used for high-resolution sensitive optical imaging. Results: GNS nanoparticles were loaded successfully into immune cells without negative effect on cellular vitality. Liver and spleen were identified to be the major organs for macrophage cells uptake after systematic administration. A small amount of macrophage cells were detected in the tumor site in our murine lymphoma animal model. Conclusion: GNS has great potential as a biocompatible marker for quantitative tracking and high-resolution imaging of immune cells at the cellular level.
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Affiliation(s)
- Yang Liu
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Wei Huang
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - Chuanfeng Xiong
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - Yuxian Huang
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
| | - Benny J Chen
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.,Duke Cancer Institute, Duke University Medical Center, Durham, NC 27710, USA
| | - Luigi Racioppi
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.,Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Naples 80131, Italy
| | - Nelson Chao
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.,Duke Cancer Institute, Duke University Medical Center, Durham, NC 27710, USA
| | - Tuan Vo-Dinh
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.,Duke Cancer Institute, Duke University Medical Center, Durham, NC 27710, USA.,Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.,Department of Chemistry, Duke University, Durham, NC 27708, USA
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17
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Huang W, Mo W, Jiang J, Chao NJ, Chen BJ. Donor Allospecific CD44 high Central Memory T Cells Have Decreased Ability to Mediate Graft-vs.-Host Disease. Front Immunol 2019; 10:624. [PMID: 31001254 PMCID: PMC6454869 DOI: 10.3389/fimmu.2019.00624] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 03/08/2019] [Indexed: 12/17/2022] Open
Abstract
Data from both animal models and humans have demonstrated that effector memory T cells (TEM) and central memory T cells (TCM) from unprimed donors have decreased ability to induce graft-vs-host disease (GVHD). Allospecific TEM from primed donors do not mediate GVHD. However, the potential of alloreactive TCM to induce GVHD is not clear. In this study, we sought to answer this question using a novel GVHD model induced by T cell receptor (TCR) transgenic OT-II T cells. Separated from OT-II mice immunized with OVA protein 8 weeks earlier, the allospecific CD44high TCM were able to mediate skin graft rejection after transfer to naive mice, yet had dramatically decreased ability to induce GVHD. We also found that these allospecific CD44high TCM persisted in GVHD target organs for more than 30 days post-transplantation, while the expansion of these cells was dramatically decreased during GVHD, suggesting an anergic or exhausted state. These observations provide insights into how allospecific CD4+ TCM respond to alloantigen during GVHD and underscore the fundamental difference of alloresponses mediated by allospecific TCM in graft rejection and GVHD settings.
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Affiliation(s)
- Wei Huang
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Wenjian Mo
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Department of Hematology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, China
| | - Jieling Jiang
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Department of Hematology, Shanghai General Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University Medical Center, Durham, NC, United States
| | - Benny J Chen
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University Medical Center, Durham, NC, United States
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18
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Zeng YS, Qu SW, Wang C, Chen BJ, Chan C. Efficient unidirectional and broadband vertical-emitting optical coupler assisted by aperture-coupled nanopatch antenna array. Opt Express 2019; 27:9941-9954. [PMID: 31045142 DOI: 10.1364/oe.27.009941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
Vertical-emitting optical couplers that convert in-plane guided light to out-of-plane emission are crucial elements for future photonic integrated circuits. However, traditional vertical-coupling elements, such as grating couplers, by default radiate light in both upward and downward directions, leading to a significant reduction of device efficiency. In this paper, we propose to solve this problem using a novel nanopatch antenna array, inspired by patch antenna theories commonly deployed in microwave circuits. The proposed nanopatch array features an up-to-down emission directionality up to 12.91 dBc and a wide operating bandwidth of over 400 nm simultaneously. Compared with a typical waveguide grating antenna, our design shows a significantly higher free-space gain of 24.27 dBi. The unidirectional, efficient, and broadband antenna arrays presented here are promising for a range of integrated photonics applications, including inter-chip photonic interconnects, light ranging and detection, optical communications, and biological imaging.
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Maung KK, Chen BJ, Rizzieri DA, Gasparetto C, Sullivan K, Long GD, Engemann AM, Waters-Pick B, Nichols KR, Lopez R, Kang Y, Sarantopoulos S, Sung AD, Chao NJ, Horwitz ME. Phase I, Dose Escalation Study of Naïve T-Cell Depleted Donor Lymphocyte Infusion Following Allogeneic Stem Cell Transplantation. Biol Blood Marrow Transplant 2019. [DOI: 10.1016/j.bbmt.2018.12.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Piryani SO, Jiao Y, Kam AYF, Liu Y, Vo-Dinh T, Chen BJ, Chao NJ, Doan PL. Endothelial Cell-Derived Extracellular Vesicles Mitigate Radiation-Induced Hematopoietic Injury. Int J Radiat Oncol Biol Phys 2019; 104:291-301. [PMID: 30763662 DOI: 10.1016/j.ijrobp.2019.02.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/29/2018] [Accepted: 02/04/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE Extracellular vesicles (EVs) are shed vesicles that bear a combination of nucleic acids and proteins. EVs are becoming recognized as a mode of cell-to-cell communication. Because hematopoietic stem cells reside in proximity to endothelial cells (ECs), we investigated whether EC-derived EVs could regulate hematopoietic stem cell regeneration after ionizing radiation. METHODS AND MATERIALS We generated EVs derived from primary murine marrow ECs. We sought to determine the response of irradiated hematopoietic stem and progenitor cells to syngeneic or allogeneic EVs in culture assays. Starting 24 hours after either sublethal or lethal irradiation, mice were treated with EVs or saline or cultured primary marrow endothelial cells to determine the hematopoietic response in vivo. RESULTS We demonstrate that EVs bear nuclear material and express EC-specific markers. Treatment with EVs promoted cell expansion and increased the number of colony-forming units compared to irradiated, hematopoietic cell cultures treated with cytokines alone. After total body irradiation, EV-treated mice displayed preserved marrow cellularity, marrow vessel integrity, and prolonged overall survival compared with controls treated with saline. Treatment of irradiated hematopoietic stem/progenitor cells (HSPCs) with EVs from different genetic strains showed results similar to treatment of HSPCs from syngeneic EVs. Mechanistically, treatment of irradiated HSPCs with EVs resulted in decreased levels of annexin V+ apoptotic cell death, which is mediated in part by tissue inhibitor of metalloproteinase-1. CONCLUSIONS Our findings show that syngeneic or allogeneic EVs could serve as cell-derived therapy to deliver physiologic doses of nucleic acids and growth factors to hematopoietic cells to accelerate hematopoietic regeneration.
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Affiliation(s)
- Sadhna O Piryani
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina
| | - Yiqun Jiao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina
| | - Angel Y F Kam
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina
| | - Yang Liu
- Department of Biomedical Engineering, Duke University, Durham, North Carolina; Department of Biomedical Engineering Chemistry, Duke University, Durham, North Carolina
| | - Tuan Vo-Dinh
- Department of Biomedical Engineering, Duke University, Durham, North Carolina; Department of Biomedical Engineering Chemistry, Duke University, Durham, North Carolina
| | - Benny J Chen
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina; Duke Cancer Institute, Duke University, Durham, North Carolina
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina; Duke Cancer Institute, Duke University, Durham, North Carolina
| | - Phuong L Doan
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina; Duke Cancer Institute, Duke University, Durham, North Carolina.
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Yang JX, Chen BJ, Pun EYB, Lin H. Praseodymium ion doped K +-Na + thermal ion-exchangeable waveguide-adaptive aluminum germanate glasses. Appl Opt 2018; 57:9022-9031. [PMID: 30461890 DOI: 10.1364/ao.57.009022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
Intense multi-peak red fluorescence and effective near-infrared (NIR) ultra-broadband emission have been observed in Pr3+ doped ion-exchangeable aluminum germanate (NMAG) glasses. The maximum emission cross section for P03→F23 red emission is up to 100.58×10-21 cm2, and the NIR emission corresponding to D21→G41 transition possesses a full-width at half-maximum (FWHM) of 210 nm. Although the obvious cross-relaxation (CR) process at high concentration causes a decrease of the quantum efficiency, the CR broadens the spectral FWHM effectively from another perspective. The admirable red fluorescence trace and the NIR single-mode transmission confirm that Pr3+ doped NMAG glass planar waveguides can support the generation of visible fluorescence and the amplification of infrared signal. For a waveguide channel ion-exchanged in molten KNO3 for 2 h, the single-mode field diameters at 1.55 μm are identified to be 10.4 μm in the horizontal direction and 6.5 μm in the vertical direction, implying an acceptable overlap with a standard single-mode fiber. Effective red fluorescence and broad NIR emission demonstrate that Pr3+ doped NMAG glasses are a promising substrate in developing irradiative luminescence sources and ultra-broadband waveguide amplifiers, especially operating at the entire S-, C-, and L- bands.
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Poe JC, Jia W, Di Paolo JA, Reyes NJ, Kim JY, Su H, Sundy JS, Cardones AR, Perez VL, Chen BJ, Chao NJ, Cardona DM, Saban DR, Sarantopoulos S. SYK inhibitor entospletinib prevents ocular and skin GVHD in mice. JCI Insight 2018; 3:122430. [PMID: 30282825 PMCID: PMC6237454 DOI: 10.1172/jci.insight.122430] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [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: 05/23/2018] [Accepted: 08/29/2018] [Indexed: 12/15/2022] Open
Abstract
Graft-versus-host disease (GVHD) is a major complication of hematopoietic stem cell transplantation (HCT). The tyrosine kinase SYK contributes to both acute and chronic GVHD development, making it an attractive target for GVHD prevention. Entospletinib (ENTO) is a second-generation highly selective SYK inhibitor with a high safety profile. Potential utility of ENTO as GVHD prophylaxis in patients was examined using a preclinical mouse model of eye and skin GVHD and ENTO-compounded chow. We found that early SYK inhibition improved blood immune cell reconstitution in GVHD mice and prolonged survival, with 60% of mice surviving to day +120 compared with 10% of mice treated with placebo. Compared with mice receiving placebo, mice receiving ENTO had dramatic improvements in clinical eye scores, alopecia scores, and skin scores. Infiltrating SYK+ cells expressing B220 or F4/80, resembling SYK+ cells found in lichenoid skin lesions of chronic GVHD patients, were abundant in the skin of placebo mice but were rare in ENTO-treated mice. Thus, ENTO given early after HCT safely prevented GVHD.
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Affiliation(s)
- Jonathan C Poe
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
| | - Wei Jia
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
| | - Julie A Di Paolo
- Department of Biology, Gilead Sciences, Foster City, California, USA
| | - Nancy J Reyes
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, USA
| | - Ji Yun Kim
- Department of Biology, Gilead Sciences, Foster City, California, USA
| | - Hsuan Su
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
| | - John S Sundy
- Inflammation/Respiratory Section, Gilead Sciences, Foster City, California, USA
| | | | - Victor L Perez
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, USA
| | - Benny J Chen
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
| | - Nelson J Chao
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
| | - Diana M Cardona
- Department of Pathology, Duke University Medical Center, Durham, North Carolina, USA
| | - Daniel R Saban
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, USA
| | - Stefanie Sarantopoulos
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina, USA
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Zhao GQ, Li Z, Sun F, Yuan Z, Chen BJ, Yu S, Peng Y, Deng Z, Wang XC, Jin CQ. Effects of high pressure on the ferromagnetism and in-plane electrical transport of (Ba 0.904K 0.096)(Zn 0.805Mn 0.195) 2As 2 single crystal. J Phys Condens Matter 2018; 30:254001. [PMID: 29741494 DOI: 10.1088/1361-648x/aac367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Pressure technique is an effective way to modify magnetic properties of diluted magnetic semiconductors (DMS). Based on single crystal, in-plane electrical transport properties of a new generation DMS (Ba0.904K0.096)(Zn0.805Mn0.195)2As2 have been measured with hydrostatic pressure up to 1.8 GPa. Magnetic properties of the single crystal sample are effectively tuned by pressure. Upon compression, the in-plane resistivity initially decreases but then increases when pressure is higher than 1.2 GPa. First principle calculations suggest that decrease of the resistivity is due to enhancement of density of state at Femi energy while increase of the resistivity under higher pressure is caused by distorted MnAs4 tetrahedra. We reveal that the configuration of the MnAs4 tetrahedra and strength of interlayer As-As bonding are of importance to ferromagnetic coupling of (Ba,K)(Zn,Mn)2As2.
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Affiliation(s)
- G Q Zhao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China. School of Physics, University of Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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Piryani SO, Kam AYF, Kliassov EG, Chen BJ, Spector NL, Chute JP, Hsu DS, Chao NJ, Doan PL. Epidermal Growth Factor and Granulocyte Colony Stimulating Factor Signaling Are Synergistic for Hematopoietic Regeneration. Stem Cells 2017; 36:252-264. [PMID: 29086459 DOI: 10.1002/stem.2731] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 10/05/2017] [Accepted: 10/24/2017] [Indexed: 12/11/2022]
Abstract
Hematopoietic regeneration following chemotherapy may be distinct from regeneration following radiation. While we have shown that epidermal growth factor (EGF) accelerates regeneration following radiation, its role following chemotherapy is currently unknown. We sought to identify EGF as a hematopoietic growth factor for chemotherapy-induced myelosuppression. Following 5-fluorouracil (5-FU), EGF accelerated hematopoietic stem cell regeneration and prolonged survival compared with saline-treated mice. To mitigate chemotherapy-induced injury to endothelial cells in vivo, we deleted Bax in VEcadherin+ cells (VEcadherinCre;BaxFL/FL mice). Following 5-FU, VEcadherinCre;BaxFL/FL mice displayed preserved hematopoietic stem/progenitor content compared with littermate controls. 5-FU and EGF treatment resulted in increased cellular proliferation, decreased apoptosis, and increased DNA double-strand break repair by non-homologous end-joining recombination compared with saline-treated control mice. When granulocyte colony stimulating factor (G-CSF) is given with EGF, this combination was synergistic for regeneration compared with either G-CSF or EGF alone. EGF increased G-CSF receptor (G-CSFR) expression following 5-FU. Conversely, G-CSF treatment increased both EGF receptor (EGFR) and phosphorylation of EGFR in hematopoietic stem/progenitor cells. In humans, the expression of EGFR is increased in patients with colorectal cancer treated with 5-FU compared with cancer patients not on 5-FU. Similarly, EGFR signaling is responsive to G-CSF in humans in vivo with both increased EGFR and phospho-EGFR in healthy human donors following G-CSF treatment compared with donors who did not receive G-CSF. These data identify EGF as a hematopoietic growth factor following myelosuppressive chemotherapy and that dual therapy with EGF and G-CSF may be an effective method to accelerate hematopoietic regeneration. Stem Cells 2018;36:252-264.
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Affiliation(s)
- Sadhna O Piryani
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA
| | - Angel Y F Kam
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA
| | - Evelyna G Kliassov
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA
| | - Benny J Chen
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA.,Duke Cancer Institute, Duke University, Durham, North Carolina, USA
| | - Neil L Spector
- Duke Cancer Institute, Duke University, Durham, North Carolina, USA.,Division of Medical Oncology, Duke University, Durham, North Carolina, USA
| | - John P Chute
- Division of Medical Oncology, University of California, Los Angeles, Los Angeles, California, USA.,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, California, USA.,Jonsson Comprehensive Cancer Center, University of California, Los Angeles, Los Angeles, California, USA
| | - David S Hsu
- Duke Cancer Institute, Duke University, Durham, North Carolina, USA.,Division of Medical Oncology, Duke University, Durham, North Carolina, USA
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA.,Duke Cancer Institute, Duke University, Durham, North Carolina, USA
| | - Phuong L Doan
- Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, North Carolina, USA.,Duke Cancer Institute, Duke University, Durham, North Carolina, USA
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Wang J, Ren LJ, Chen XL, Ma L, Chen BJ, Ran SJ, Lu S. Quick rehabilitation nursing improves the recovery of colon cancer patients after laparoscopy. J BIOL REG HOMEOS AG 2017; 31:1073-1079. [PMID: 29254317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Colon cancer is a common malignant tumor with particularly high morbidity and mortality. The aim of this study was to compare the effect of quick rehabilitation nursing and routine nursing in postoperative recovery of patients with colon cancer after laparoscopic surgery. Two hundred forty patients with colon cancer were classified into four random groups (A, B, C and D, with 60 patients in each group). All patients underwent surgery to remove the colon tumor by laparoscopy under general anesthesia. Patients in groups A and B received quick rehabilitation nursing for post-surgery recovery. In group C patients, local anesthesia associated with quick rehabilitation nursing for post-surgery recovery was used. Group D was used as control group and the patients were treated based on routine nursing. Time to get out of bed, first bowel movement time and the average time of hospitalisation in group A was lower than group D (p less than 0.05), postoperative leukocyte level as well as the occurrence rate of nausea and vomiting, ankylenteron and pelvic adhesion was decreased in group A compared to group D (p less than 0.05), but the postoperative albumin and total protein level was higher than group D (p less than 0.05). The serum level of C-Reactive Protein (CRP) and interleukin 6 (IL-6) in group A was decreased compared to group D several days after surgery (p less than 0.05); group B had 4 cases of intestinal obstruction after surgery that could be cured through conservative treatment, while group D had 10 cases of intestinal obstruction, 8 of which could be cured through conservative treatment and two needed surgery (p less than 0.05); VAS for pain degree of group C in active state was clearly lower at 1h, 5h, 7h, 15h, 30h and 42h after surgery, and side effects of postoperative analgesia were clearly reduced. Time to get out of bed was obviously decreased, while there was no evident effect on postoperative dosage, chronic pain and complications. Adopting quick rehabilitation nursing can effectively reduce occurrence of complications and postoperative pain, speed up the recovery of gastrointestinal function, shorten the length of stay, and improve patients satisfaction.
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Affiliation(s)
- J Wang
- Department of General Surgery, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - L J Ren
- Department of Nuclear Medicine, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - X L Chen
- Department of Nursing, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - L Ma
- Department of Nursing, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - B J Chen
- Department of Nursing, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - S J Ran
- Department of General Surgery, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
| | - S Lu
- Department of General Surgery, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, China
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Huang S, Yang B, Chen BJ, Bliim N, Ueberham U, Arendt T, Janitz M. The emerging role of circular RNAs in transcriptome regulation. Genomics 2017; 109:401-407. [PMID: 28655641 DOI: 10.1016/j.ygeno.2017.06.005] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [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: 05/22/2017] [Revised: 06/19/2017] [Accepted: 06/22/2017] [Indexed: 01/01/2023]
Abstract
Circular RNAs (circRNAs) are a recently discovered form of RNA that has been found to regulate mammalian transcription. CircRNAs are covalently closed, single-stranded transcripts produced from precursor mRNA. While initially circRNAs were considered to be splicing artefacts, next-generation RNA sequencing of non-polyadenylated transcriptomes has recently shown that the expression of circRNAs is widespread and over 20% of expressed genes in examined cells and tissues can produce these transcripts. Until now thousands of circRNAs have been discovered in organisms ranging from Drosophila melanogaster to Homo sapiens. Functional studies indicate that these transcripts regulate expression of protein-coding linear transcripts and thus comprise an important component of gene expression regulation. Here we provide a comprehensive overview on the biology of circRNAs, including the expression patterns and function. Moreover, we discuss current methodologies for the discovery and validation of circular transcripts. Finally, perspectives on the utilization of circRNA as molecular markers of complex diseases are presented.
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Affiliation(s)
- S Huang
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - B Yang
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - B J Chen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - N Bliim
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - U Ueberham
- Paul-Flechsig-Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - T Arendt
- Paul-Flechsig-Institute for Brain Research, University of Leipzig, Leipzig, Germany
| | - M Janitz
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
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Chen BJ, Xie XY, Ni LJ, Dai XL, Lu Y, Wu XQ, Li HY, Yao YD, Huang SY. Factors associated with Staphylococcus aureus nasal carriage and molecular characteristics among the general population at a Medical College Campus in Guangzhou, South China. Ann Clin Microbiol Antimicrob 2017; 16:28. [PMID: 28399856 PMCID: PMC5387264 DOI: 10.1186/s12941-017-0206-0] [Citation(s) in RCA: 19] [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: 01/28/2017] [Accepted: 04/06/2017] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The nasal cavity is the main colonization site of Staphylococcus aureus (S. aureus) in human body. Nasal carriage may be a strong risk factor for some serious infection. There was still limited information about the nasal carriage for S. aureus in south China. METHODS Sought to determine the prevalence and molecular characteristics of S. aureus nasal carriage, 295 volunteers residing on a medicine campus were investigated and sampled the nasal cavity swab. Selected S. aureus isolates were carried through molecular analysis, including pulsed-field gel electrophoresis (PFGE), multilocus sequence analysis, staphylococcal cassette chromosome mec (SCCmec) and virulence gene detection. RESULTS A total of 73 S. aureus isolates were recovered from separate subjects (24.7%, 73/295), with one methicillin-resistant S. aureus (MRSA) isolate (0.3%, 1/295). Among the 73 isolates, 71 isolates were successfully grouped into 13 pulsotypes by PFGE analysis, with profiles A and L the most prevalent; 12 sequence types (STs) were found among the 23 isolates which had similar drug resistant spectrum. ST59, ST188 and ST1 were the most prevalent, accounting for 17.4, 13.0 and 13.0% of all isolates, respectively. The MRSA isolate presented ST8-SCCmec III. 56.5% of isolates carried both the staphylococcal enterotoxin A (sea) and enterotoxin B (seb) genes. 83.6% of the S. aureus isolates were resistant to penicillin, all isolates were susceptible to quinupristin/dalfopristin, levofloxacin, teicoplanin and vancomycin. The most common risk factors for S. aureus carriage were being male, age ≤30 years, and nasal cavity cleaning habits. CONCLUSIONS Colonization by S. aureus was greater among male and young age (20-30 years) students and those with irregularity nasal cleaning. The S. aureus isolates selected were revealed into various sequence types and pulsotypes, indicating molecular heterogeneity among S. aureus isolates from the populations in the medical college in Guangzhou.
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Affiliation(s)
- B J Chen
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - X Y Xie
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - L J Ni
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - X L Dai
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Y Lu
- Cross Infection Control Office, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, Guangdong, China
| | - X Q Wu
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - H Y Li
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Y D Yao
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, Guangdong, China.
| | - S Y Huang
- Department of Laboratory, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
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Maiques O, Macià A, Moreno S, Barceló C, Santacana M, Vea A, Herreros J, Gatius S, Ortega E, Valls J, Chen BJ, Llobet-Navas D, Matias-Guiu X, Cantí C, Marti RM. Immunohistochemical analysis of T-type calcium channels in acquired melanocytic naevi and melanoma. Br J Dermatol 2017; 176:1247-1258. [PMID: 27718503 DOI: 10.1111/bjd.15121] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND Cutaneous malignant melanoma arises from transformed melanocytes de novo or from congenital or acquired melanocytic naevi. We have recently reported that T-type Ca2+ channels (TT-Cs) are upregulated in human melanoma and play an important role in cell proliferation. OBJECTIVES To describe for the first time in formalin-fixed paraffin-embedded tissue the immunoexpression of TT-Cs in biopsies of normal skin, acquired melanocytic naevi and melanoma, in order to evaluate their role in melanomagenesis and/or tumour progression, their utility as prognostic markers and their possible use in targeted therapies. METHODS Tissue samples from normal skin, melanocytic naevi and melanoma were subjected to immunohistochemistry for two TT-Cs (Cav3.1, Cav3.2); markers of proliferation (Ki67), the cell cycle (cyclin D1), hypoxia (Glut1), vascularization (CD31) and autophagy (LC3); BRAF V600E mutation (VE1) and phosphatase and tensin homologue (PTEN). Immunostaining was evaluated by histoscore. In silico analysis was used to assess the prognostic value of TT-C overexpression. RESULTS TT-C immunoexpression increased gradually from normal skin to common naevi, dysplastic naevi and melanoma samples, but with differences in the distribution of both isoforms. Particularly, Cav3.2 expression was significantly higher in metastatic melanoma than in primary melanoma. Statistical correlation showed a linear interaction between PTEN loss/BRAF V600E/Cav3.1/LC3/ Ki67/cyclin D1/Cav3.2/Glut1. Disease-free survival (DFS) and overall survival correlated inversely with overexpression of Cav3.2. DFS also correlated inversely with overexpression of Cav3.1. CONCLUSIONS TT-C immunoexpression on melanocytic neoplasms is consistent with our previous in vitro studies and appears to be related to tumour progression. TT-C upregulation can be considered as a prognostic marker using The Cancer Genome Atlas database. The high expression of Cav3.2 in metastatic melanoma encourages the investigation of the use of TT-C blockers in targeted therapies.
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Affiliation(s)
- O Maiques
- University of Lleida, IRBLleida, Lleida, Spain
| | - A Macià
- University of Lleida, IRBLleida, Lleida, Spain
| | - S Moreno
- Department of Dermatology, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - C Barceló
- University of Lleida, IRBLleida, Lleida, Spain
| | - M Santacana
- Department of Pathology and Molecular Genetics, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - A Vea
- Department of Dermatology, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - J Herreros
- University of Lleida, IRBLleida, Lleida, Spain
| | - S Gatius
- Department of Pathology and Molecular Genetics, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - E Ortega
- Department of Oncology, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - J Valls
- Biostatistics Unit, IRBLleida, Lleida, Spain
| | - B J Chen
- New York Genome Center, New York, NY, U.S.A
| | - D Llobet-Navas
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, U.K
| | - X Matias-Guiu
- Department of Pathology and Molecular Genetics, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
| | - C Cantí
- University of Lleida, IRBLleida, Lleida, Spain
| | - R M Marti
- Department of Dermatology, Hospital Universitari Arnau de Vilanova; University of Lleida, IRBLleida, Lleida, Spain
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Foster MH, Buckley ES, Chen BJ, Hwang KK, Clark AG. Uncommon structural motifs dominate the antigen binding site in human autoantibodies reactive with basement membrane collagen. Mol Immunol 2016; 76:123-33. [PMID: 27450516 DOI: 10.1016/j.molimm.2016.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 07/01/2016] [Accepted: 07/05/2016] [Indexed: 11/26/2022]
Abstract
Autoantibodies mediate organ destruction in multiple autoimmune diseases, yet their origins in patients remain poorly understood. To probe the genetic origins and structure of disease-associated autoantibodies, we engrafted immunodeficient mice with human CD34+ hematopoietic stem cells and immunized with the non-collagenous-1 (NC1) domain of the alpha3 chain of type IV collagen. This antigen is expressed in lungs and kidneys and is targeted by autoantibodies in anti-glomerular basement membrane (GBM) nephritis and Goodpasture syndrome (GPS), prototypic human organ-specific autoimmune diseases. Using Epstein Barr virus transformation and cell fusion, six human anti-alpha3(IV)NC1 collagen monoclonal autoantibodies (mAb) were recovered, including subsets reactive with human kidney and with epitopes recognized by patients' IgG. Sequence analysis reveals a long to exceptionally long heavy chain complementarity determining region3 (HCDR3), the major site of antigen binding, in all six mAb. Mean HCDR3 length is 25.5 amino acids (range 20-36), generated from inherently long DH and JH genes and extended regions of non-templated N-nucleotides. Long HCDR3 are suited to forming noncontiguous antigen contacts and to binding recessed, immunologically silent epitopes hidden from conventional antibodies, as seen with self-antigen crossreactive broadly neutralizing anti-HIV Ig (bnAb). The anti-alpha3(IV)NC1 collagen mAb also show preferential use of unmutated variable region genes that are enriched among human chronic lymphocytic leukemia antibodies that share features with natural polyreactive Ig. Our findings suggest unexpected relationships between pathogenic anti-collagen Ig, bnAb, and autoreactive Ig associated with malignancy, all of which arise from B cells expressing unconventional structural elements that may require transient escape from tolerance for successful expansion.
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Affiliation(s)
- Mary H Foster
- Department of Medicine, Duke University Medical Center, Durham, N.C., USA; Durham VA Medical Center, Durham, N.C., USA; Duke Cancer Institute, Duke University Medical Center, Durham, N.C., USA.
| | | | - Benny J Chen
- Department of Medicine, Duke University Medical Center, Durham, N.C., USA; Duke Cancer Institute, Duke University Medical Center, Durham, N.C., USA.
| | - Kwan-Ki Hwang
- Department of Medicine, Duke University Medical Center, Durham, N.C., USA; Duke Human Vaccine Institute, Duke University Medical Center, Durham, N.C., USA.
| | - Amy G Clark
- Department of Medicine, Duke University Medical Center, Durham, N.C., USA; Durham VA Medical Center, Durham, N.C., USA.
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Huang YN, Wang J, Chen BJ, Jiang QY, Guo YF, Lan GQ, Jiang HS. Gene expression and enzyme activity of lipoprotein lipase correlate with intramuscular fat content in Guangxi san-huang and Arbor Acres chickens. Genet Mol Res 2016; 15:gmr7414. [PMID: 27323106 DOI: 10.4238/gmr.15027414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Lipoprotein lipase (LPL) is a key enzyme in lipid metabolism. This study investigated LPL gene expression, LPL enzyme activity, and the correlation of each with intramuscular fat (IMF) in Chinese Guangxi san-huang (GXSH) and Arbor Acres (AA) chickens. The results showed that age and breed had significant effects on LPL expression and enzyme activity. Correlation analyses showed significant positive correlations between LPL expression levels and IMF contents in the breast and thigh tissues of both GXSH (r = 0.712, P = 0.001; r = 0.792, P < 0.001, respectively) and AA (r = 0.644, P < 0.001; r = 0.545, P < 0.001, respectively) chickens. The results also indicated a significant positive correlation between LPL enzyme activity and IMF contents in the breast and thigh tissues of both GXSH (r = 0.615, P = 0.001; r = 0.685, P < 0.001, respectively) and AA (r = 0.600, P = 0.001; r = 0.528, P = 0.003, respectively) chickens. The results indicated that the LPL gene was significantly correlated with IMF in these two breeds. The results presented here could contribute to knowledge of LPL mRNA developmental expression patterns and enzyme activity, and it could facilitate further research on the molecular mechanisms underlying IMF deposition in chickens.
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Affiliation(s)
- Y N Huang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - J Wang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - B J Chen
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Q Y Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Y F Guo
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - G Q Lan
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - H S Jiang
- College of Animal Science and Technology, Guangxi University, Nanning, China
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Huang SY, Pan KY, Liu XQ, Xie XY, Dai XL, Chen BJ, Wu XQ, Li HY. Analysis of the drug-resistant characteristics of Klebsiella pneumoniae isolated from the respiratory tract and CTX-M ESBL genes. Genet Mol Res 2015; 14:12043-8. [PMID: 26505351 DOI: 10.4238/2015.october.5.17] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The main aim of this study was to understand the relationship between the drug-resistant characteristics of Klebsiella pneumoniae and CTX-M-type extended spectrum β-lactamases (ESBLs), and to detect the distributions of CTX-M-type ESBLs in clinically isolated strains. CTX-M ESBL genes isolated from the clinical samples were amplified by polymerase chain reaction and identified by sequence analysis; the antibiotic susceptibility of the samples was determined using the Kirby-Bauer disc-diffusion method. One hundred and five strains among the 246 isolated strains of K. pneumoniae tested positive for ESBL production (42.68%); 92 of these produced CTX-M ESBLs. Of the 92 CTX-M ESBL strains, 81 produced CTX-M-1 ESBLs and 11 produced CTX-M-25 ESBLs. Fifty-seven of the CTX-M-1 ESBL- and six of the CTX-M-25 ESBL-producing bacteria had CTX-M ESBL genes that coexisted in the plasmid and chromosome. The Kirby-Bauer antibiotic susceptibility method revealed that CTX-M ESBL-positive strains showed a higher rate of resistance to cefazolin, cefoxitin, cefuroxime, ceftazidime, cefotaxime, aztreonam, levofloxacin, and cotrimoxazole, compared to the CTX-M ESBL-negative strains (P < 0.05). The CTX-M ESBL genes were commonly observed in the K. pneumoniae isolated from respiratory tract samples; these were significantly associated with the drug-resistant characteristics of K. pneumoniae to β-lactam antibiotics.
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Affiliation(s)
- S Y Huang
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - K Y Pan
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X Q Liu
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X Y Xie
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X L Dai
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - B J Chen
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X Q Wu
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - H Y Li
- Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Sui ZQ, Chen BJ, Pun EYB, Lin H. Infrared radiation properties of Ho³⁺ in multicomponent germanium tellurite glasses. Appl Opt 2015; 54:5976-5982. [PMID: 26193141 DOI: 10.1364/ao.54.005976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ho(3+)-doped and Ho(3+)/Yb(3+)-codoped multicomponent germanium tellurite (MGT) glasses with multifarious emission channels in the near-infrared wavelength region have been fabricated and characterized. Judd-Ofelt intensity parameters of Ho(3+)-doped MGT glasses are solved to be Ω2=5.32×10(-20) cm(2), Ω(4)=2.73×10(-20) cm(2), and Ω(6)=1.12×10(-20) cm(2), indicating a higher asymmetric and stronger covalent environment around Ho(3+) ions in MGT glasses. Efficient infrared fluorescences have been observed in MGT glasses, and spontaneous emission probabilities are derived to be 230.4, 79.9, and 138.3 s(-1) for the (5)I(6)→(5)I(8), ((5)F(4),(5)S(2))→(5)I(5), and (5)I(7)→(5)I(8) radiative transitions, respectively. In Ho(3+)/Yb(3+)-codoped MGT glasses, the maximum stimulated emission cross-section of 2.0 μm emission is calculated to be 4.93×10(-21) cm(2), and the corresponding gain cross-section is derived to be 3.62×10(-21) cm(2) when the excited state population fraction P reaches 0.8. Multifarious infrared emissions show that Ho(3+) in MGT glasses is a good candidate for optical amplifiers and optoelectronic devices.
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Worni-Schudel IM, Clark AG, Chien T, Hwang KK, Chen BJ, Foster MH. Recovery of a human natural antibody against the noncollagenous-1 domain of type IV collagen using humanized models. J Transl Med 2015; 13:185. [PMID: 26048777 PMCID: PMC4467618 DOI: 10.1186/s12967-015-0539-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 05/14/2015] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Anti-glomerular basement membrane nephritis and Goodpasture syndrome result from autoantibody (Ab)-mediated destruction of kidney and lung. Ab target the noncollagenous 1 (NC1) domain of alpha3(IV) collagen, but little is known about Ab origins or structure. This ignorance is due in part to the inability to recover monoclonal Ab by transformation of patients' blood cells. The aim of this study was to assess the suitability of two humanized models for this purpose. METHODS NOD-scid-gamma immunodeficient mice were engrafted either with human CD34+ hematopoietic stem cells (HSC) (Hu-HSC mice) and immunized with alpha3(IV)NC1 collagen containing the Goodpasture epitopes or with nephritis patients' peripheral blood leukocytes (PBL) (Hu-PBL mice). After in vivo immune cell development and/or expansion, recovered human B cells were Epstein Barr virus (EBV)-transformed, screened for antigen (Ag) binding, electrofused with a mouse-human heterohybridoma, subcloned, and human Ab RNA sequenced by PCR after reverse transcription to cDNA. Flow cytometry was used to assess human B cell markers and differentiation in Hu-PBL mice. RESULTS Sequence analysis of a human Ab derived from an immunized Hu-HSC mouse and reactive with alpha3(IV)NC1 collagen reveals that it is encoded by unmutated heavy and light chain genes. The heavy chain complementarity determining region 3, a major determinant of Ag binding, contains uncommon motifs, including an N-region somatically-introduced highly hydrophobic tetrapeptide and dual cysteines encoded by a uniquely human IGHD2-2 Ab gene segment that lacks a murine counterpart. Comparison of human and mouse autoantibodies suggests that structurally similar murine Ab may arise by convergent selection. In contrast to the Hu-HSC model, transformed human B cells are rarely recovered from Hu-PBL mice, in which human B cells terminally differentiate and lose expression of EBV receptor CD21, thus precluding their transformation and recovery. CONCLUSIONS Hu-HSC mice reveal that potentially pathogenic B cells bearing unmutated Ig receptors reactive with the NC1 domain on alpha3(IV) collagen can be generated in, and not purged from, the human preimmune repertoire. Uniquely human gene elements are recruited to generate the antigen binding site in at least a subset of these autoantibodies, indicating that humanized models may provide insights inaccessible using conventional mouse models.
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Affiliation(s)
| | - Amy G Clark
- Department of Medicine, Duke University Medical Center, Durham, NC, USA.
- Durham VA Medical Center, Durham, NC, USA.
| | - Tiffany Chien
- Department of Medicine, Duke University Medical Center, Durham, NC, USA.
| | - Kwan-Ki Hwang
- Department of Medicine, Duke University Medical Center, Durham, NC, USA.
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC, USA.
| | - Benny J Chen
- Department of Medicine, Duke University Medical Center, Durham, NC, USA.
- Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA.
| | - Mary H Foster
- Department of Medicine, Duke University Medical Center, Durham, NC, USA.
- Durham VA Medical Center, Durham, NC, USA.
- Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA.
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Sung AD, Yen R, Deoliveira D, Jiao Y, Piryani S, Bernanke A, Hall S, Klemp K, Yun S, Arepally G, Hoffman MR, Ortel TL, Chao NJ, Chen BJ. Fibrinogen-Coated Nanospheres Prevent Thrombocytopenia-Related Bleeding. Biol Blood Marrow Transplant 2015. [DOI: 10.1016/j.bbmt.2014.11.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Macintyre AN, Gerriets VA, Nichols AG, Michalek RD, Rudolph MC, Deoliveira D, Anderson SM, Abel ED, Chen BJ, Hale LP, Rathmell JC. The glucose transporter Glut1 is selectively essential for CD4 T cell activation and effector function. Cell Metab 2014; 20:61-72. [PMID: 24930970 PMCID: PMC4079750 DOI: 10.1016/j.cmet.2014.05.004] [Citation(s) in RCA: 756] [Impact Index Per Article: 75.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 12/11/2013] [Accepted: 04/24/2014] [Indexed: 12/13/2022]
Abstract
CD4 T cell activation leads to proliferation and differentiation into effector (Teff) or regulatory (Treg) cells that mediate or control immunity. While each subset prefers distinct glycolytic or oxidative metabolic programs in vitro, requirements and mechanisms that control T cell glucose uptake and metabolism in vivo are uncertain. Despite expression of multiple glucose transporters, Glut1 deficiency selectively impaired metabolism and function of thymocytes and Teff. Resting T cells were normal until activated, when Glut1 deficiency prevented increased glucose uptake and glycolysis, growth, proliferation, and decreased Teff survival and differentiation. Importantly, Glut1 deficiency decreased Teff expansion and the ability to induce inflammatory disease in vivo. Treg cells, in contrast, were enriched in vivo and appeared functionally unaffected and able to suppress Teff, irrespective of Glut1 expression. These data show a selective in vivo requirement for Glut1 in metabolic reprogramming of CD4 T cell activation and Teff expansion and survival.
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Affiliation(s)
- Andrew N Macintyre
- Department of Pharmacology and Cancer Biology, Immunology, Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, NC 27710, USA
| | - Valerie A Gerriets
- Department of Pharmacology and Cancer Biology, Immunology, Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, NC 27710, USA
| | - Amanda G Nichols
- Department of Pharmacology and Cancer Biology, Immunology, Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, NC 27710, USA
| | - Ryan D Michalek
- Department of Pharmacology and Cancer Biology, Immunology, Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, NC 27710, USA
| | - Michael C Rudolph
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Divino Deoliveira
- Division of Hematological Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC 27710, USA
| | - Steven M Anderson
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - E Dale Abel
- Fraternal Order of Eagles Diabetes Research Center, Division of Endocrinology and Metabolism, Department of Medicine, Carver College of Medicine University of Iowa, Iowa City, IA 52242, USA
| | - Benny J Chen
- Division of Hematological Malignancies and Cellular Therapy, Department of Medicine, Duke University, Durham, NC 27710, USA
| | - Laura P Hale
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Jeffrey C Rathmell
- Department of Pharmacology and Cancer Biology, Immunology, Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, NC 27710, USA
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Belley MD, Wang C, Nguyen G, Gunasingha R, Chao NJ, Chen BJ, Dewhirst MW, Yoshizumi TT. Toward an organ based dose prescription method for the improved accuracy of murine dose in orthovoltage x-ray irradiators. Med Phys 2014; 41:034101. [PMID: 24593746 PMCID: PMC3987731 DOI: 10.1118/1.4864237] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [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: 06/24/2013] [Revised: 12/16/2013] [Accepted: 01/16/2014] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Accurate dosimetry is essential when irradiating mice to ensure that functional and molecular endpoints are well understood for the radiation dose delivered. Conventional methods of prescribing dose in mice involve the use of a single dose rate measurement and assume a uniform average dose throughout all organs of the entire mouse. Here, the authors report the individual average organ dose values for the irradiation of a 12, 23, and 33 g mouse on a 320 kVp x-ray irradiator and calculate the resulting error from using conventional dose prescription methods. METHODS Organ doses were simulated in the Geant4 application for tomographic emission toolkit using the MOBY mouse whole-body phantom. Dosimetry was performed for three beams utilizing filters A (1.65 mm Al), B (2.0 mm Al), and C (0.1 mm Cu + 2.5 mm Al), respectively. In addition, simulated x-ray spectra were validated with physical half-value layer measurements. RESULTS Average doses in soft-tissue organs were found to vary by as much as 23%-32% depending on the filter. Compared to filters A and B, filter C provided the hardest beam and had the lowest variation in soft-tissue average organ doses across all mouse sizes, with a difference of 23% for the median mouse size of 23 g. CONCLUSIONS This work suggests a new dose prescription method in small animal dosimetry: it presents a departure from the conventional approach of assigninga single dose value for irradiation of mice to a more comprehensive approach of characterizing individual organ doses to minimize the error and uncertainty. In human radiation therapy, clinical treatment planning establishes the target dose as well as the dose distribution, however, this has generally not been done in small animal research. These results suggest that organ dose errors will be minimized by calibrating the dose rates for all filters, and using different dose rates for different organs.
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Affiliation(s)
- Matthew D Belley
- Medical Physics Graduate Program, Duke University Medical Center, Durham, North Carolina 27705
| | - Chu Wang
- Medical Physics Graduate Program, Duke University Medical Center, Durham, North Carolina 27705
| | - Giao Nguyen
- Duke Radiation Dosimetry Laboratory, Duke University Medical Center, Durham, North Carolina 27710
| | - Rathnayaka Gunasingha
- Duke Radiation Dosimetry Laboratory, Duke University Medical Center, Durham, North Carolina 27710
| | - Nelson J Chao
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710 and Department of Immunology, Duke University Medical Center, Durham, North Carolina 27710
| | - Benny J Chen
- Department of Medicine, Duke University Medical Center, Durham, North Carolina 27710
| | - Mark W Dewhirst
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710
| | - Terry T Yoshizumi
- Duke Radiation Dosimetry Laboratory, Duke University Medical Center, Durham, North Carolina 27710; Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710; and Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710
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Yang J, Chen BJ, Pun EYB, Zhai B, Lin H. Pr3+-doped heavy metal germanium tellurite glasses for irradiative light source in minimally invasive photodynamic therapy surgery. Opt Express 2013; 21:1030-1040. [PMID: 23388997 DOI: 10.1364/oe.21.001030] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Pr3+-doped medium-low phonon energy heavy metal germanium tellurite (NZPGT) glasses have been fabricated and the intense multi-peak red fluorescence emissions of Pr3+ are exhibited. Judd-Ofelt parameters Ω2 = 3.14 × 10(-20)cm(2), Ω4 = 10.67 × 10(-20)cm(2) and Ω6 = 3.95 × 10(-20)cm(2) indicate a high asymmetrical and covalent environment in the optical glasses. The spontaneous emission probabilities A(ij) corresponding to the 1D2→3H4, 3P0→3H6, and 3P0→3F2 transitions are derived to be 1859.6, 6270.1 and 17276.3s(-1), respectively, and the relevant stimulated emission cross-sections σ(em) are 5.20 × 10(-21), 14.14 × 10(-21) and 126.77 × 10(-21)cm(2), confirming that the effectiveness of the red luminescence in Pr3+-doped NZPGT glasses. Under the commercial blue LED excitation, the radiant flux and the quantum yield for the red fluorescence of Pr3+ are solved to be 219μW and 11.80%, respectively. 85.24% photons of the fluorescence in the visible region are demonstrated to be located in 600-720nm wavelength range, which matches the excitation band of the most photosensitizers (PS), holding great promise for photodynamic therapy (PDT) treatment and clinical trials.
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Affiliation(s)
- J Yang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
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Chen BJ, Jiao Y, Zhang P, Sun AY, Pitt GS, Deoliveira D, Drago N, Ye T, Liu C, Chao NJ. Long-term in vivo imaging of multiple organs at the single cell level. PLoS One 2013; 8:e52087. [PMID: 23300962 PMCID: PMC3534688 DOI: 10.1371/journal.pone.0052087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 11/15/2012] [Indexed: 11/18/2022] Open
Abstract
Two-photon microscopy has enabled the study of individual cell behavior in live animals. Many organs and tissues cannot be studied, especially longitudinally, because they are located too deep, behind bony structures or too close to the lung and heart. Here we report a novel mouse model that allows long-term single cell imaging of many organs. A wide variety of live tissues were successfully engrafted in the pinna of the mouse ear. Many of these engrafted tissues maintained the normal tissue histology. Using the heart and thymus as models, we further demonstrated that the engrafted tissues functioned as would be expected. Combining two-photon microscopy with fluorescent tracers, we successfully visualized the engrafted tissues at the single cell level in live mice over several months. Four dimensional (three-dimensional (3D) plus time) information of individual cells was obtained from this imaging. This model makes long-term high resolution 4D imaging of multiple organs possible.
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Affiliation(s)
- Benny J. Chen
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina, United States of America
- * E-mail:
| | - Yiqun Jiao
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Ping Zhang
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Albert Y. Sun
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Geoffrey S. Pitt
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Divino Deoliveira
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Nicholas Drago
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Tong Ye
- Department of Neurobiology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Chen Liu
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, Florida, United States of America
| | - Nelson J. Chao
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
- Department of Immunology, Duke University Medical Center, Durham, North Carolina, United States of America
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina, United States of America
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Zhang P, Wu J, Deoliveira D, Chao NJ, Chen BJ. Allospecific CD4(+) effector memory T cells do not induce graft-versus-host disease in mice. Biol Blood Marrow Transplant 2012; 18:1488-99. [PMID: 22809867 DOI: 10.1016/j.bbmt.2012.07.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 07/09/2012] [Indexed: 11/29/2022]
Abstract
We studied whether allospecific CD4(+) effector memory T cells (T(EM)) could induce graft-versus-host disease (GVHD) using a novel GVHD model induced solely by CD4(+) T cell receptor transgenic TEa cells. Allospecific T(EM) generated in a lymphopenic host bore a typical memory phenotype. Moreover, these cells were able to elicit a faster and more effective proliferative response on challenge with alloantigen in vitro and to mediate "second-set" skin graft rejection in vivo. However, these allospecific T(EM) were unable to induce GVHD. Allospecific T(EM) recipients became tolerant to alloantigen as a result of clonal deletion. Even though allospecific T(EM) were able to respond to alloantigen initially, the expansion of these cells and inflammatory cytokine production during GVHD were dramatically decreased. The inability of allospecific T(EM) to sustain the alloresponse may be a result of enhanced activation-induced cell death. These observations provide insight into how allospecific CD4(+) T(EM) respond to alloantigen during GVHD and underscore the fundamental differences in alloresponses mediated by allospecific T(EM) in graft rejection and GVHD settings.
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Affiliation(s)
- Ping Zhang
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA
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Tsai PB, Zehnaly A, Chen BJ, Kwan WF. Lower extremity radicular pain after prophylactic intrathecal saline injection through a subarachnoid catheter following accidental dural puncture. Int J Obstet Anesth 2011; 20:262-5. [PMID: 21636264 DOI: 10.1016/j.ijoa.2011.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 12/16/2010] [Accepted: 03/05/2011] [Indexed: 11/16/2022]
Abstract
We describe a case in which severe lower extremity radicular pain occurred after administration of 0.9% saline into the subarachnoid space through a catheter that had been left for 20 h following inadvertent dural puncture in an obstetric patient. A 42-year-old (G8P7) woman was admitted for repeat cesarean delivery. Accidental dural puncture occurred during epidural placement. Following a slow 10-mL intrathecal injection of 0.9% normal saline an epidural catheter was advanced into the subarachnoid space. Spinal anesthesia was used for cesarean delivery and the subarachnoid catheter was kept in place for 20 h. Before catheter removal, an additional 10 mL of 0.9% saline was slowly administered into the intrathecal space. Almost instantly, the patient complained of back pain that progressed to lower extremity radicular pain and paresthesia; symptoms began to resolve after 10 min. Subsequently, the patient developed a postdural puncture headache that persisted for three days. The patient's radiculitis and paresthesia likely resulted from an acute increase in intrathecal pressure after saline administration or from direct catheter irritation. Although both intrathecal saline administration and subarachnoid catheter placement have been previously proposed as ways to prevent postdural puncture headache, their efficacy remains controversial, and we advise caution with these techniques.
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Affiliation(s)
- P B Tsai
- Department of Anesthesiology, Harbor-UCLA Medical Center, Torrance, California 90509-2910, USA.
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Deoliveira D, Jiao Y, Ross JR, Corbin K, Xiao Q, Toncheva G, Anderson-Evans C, Yoshizumi TT, Chen BJ, Chao NJ. An ear punch model for studying the effect of radiation on wound healing. Int J Radiat Biol 2011; 87:869-77. [PMID: 21480768 DOI: 10.3109/09553002.2011.568575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Radiation and wound combined injury represents a major clinical challenge because of the synergistic interactions that lead to higher morbidity and mortality than either insult would produce singly. The purpose of this study was to develop a mouse ear punch model to study the physiological mechanisms underlying radiation effects on healing wounds. MATERIALS AND METHODS Surgical wounds were induced by a 2 mm surgical punch in the ear pinnae of MRL/MpJ mice. Photographs of the wounds were taken and the sizes of the ear punch wounds were quantified by image analysis. Local radiation to the ear was delivered by orthovoltage X-ray irradiator using a specially constructed jig that shields the other parts of body. RESULTS Using this model, we demonstrated that local radiation to the wound area significantly delayed the healing of ear punch wounds in a dose-dependent fashion. The addition of sublethal whole body irradiation (7 Gy) further delayed the healing of ear punch wounds. These results were replicated in C57BL/6 mice; however, wound healing in MRL/MpJ mice was accelerated. CONCLUSIONS These data indicate that the mouse ear punch model is a valuable model to study radiation and wound combined injury.
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Affiliation(s)
- Divino Deoliveira
- Departments of Medicine, Duke University Medical Center, Durham, North Carolina, USA
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Kang Y, Chen BJ, DeOliveira D, Mito J, Chao NJ. Selective enhancement of donor hematopoietic cell engraftment by the CXCR4 antagonist AMD3100 in a mouse transplantation model. PLoS One 2010; 5:e11316. [PMID: 20596257 PMCID: PMC2893128 DOI: 10.1371/journal.pone.0011316] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Accepted: 05/27/2010] [Indexed: 11/19/2022] Open
Abstract
The interaction between stromal cell-derived factor-1 (SDF-1) with CXCR4 chemokine receptors plays an important role in hematopoiesis following hematopoietic stem cell transplantation. We examined the efficacy of post transplant administration of a specific CXCR4 antagonist (AMD3100) in improving animal survival and in enhancing donor hematopoietic cell engraftment using a congeneic mouse transplantation model. AMD3100 was administered subcutaneously at 5 mg/kg body weight 3 times a week beginning at day +2 post-transplant. Post-transplant administration of AMD3100 significantly improves animal survival. AMD3100 reduces pro-inflammatory cytokine/chemokine production. Furthermore, post transplant administration of AMD3100 selectively enhances donor cell engraftment and promotes recovery of all donor cell lineages (myeloid cells, T and B lymphocytes, erythrocytes and platelets). This enhancement results from a combined effect of increased marrow niche availability and greater cell division induced by AMD3100. Our studies shed new lights into the biological roles of SDF-1/CXCR4 interaction in hematopoietic stem cell engraftment following transplantation and in transplant-related mortality. Our results indicate that AMD3100 provides a novel approach for enhancing hematological recovery following transplantation, and will likely benefit patients undergoing transplantation.
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Affiliation(s)
- Yubin Kang
- Divisions of Hematology, Oncology and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Benny J. Chen
- Division of Cellular Therapy/Adult Bone Marrow Transplantation, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Divino DeOliveira
- Division of Cellular Therapy/Adult Bone Marrow Transplantation, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Jeffrey Mito
- Division of Cellular Therapy/Adult Bone Marrow Transplantation, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Nelson J. Chao
- Division of Cellular Therapy/Adult Bone Marrow Transplantation, Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
- * E-mail:
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Chen BJ, Deoliveira D, Spasojevic I, Sempowski GD, Jiang C, Owzar K, Wang X, Gesty-Palmer D, Cline JM, Bourland JD, Dugan G, Meadows SK, Daher P, Muramoto G, Chute JP, Chao NJ. Growth hormone mitigates against lethal irradiation and enhances hematologic and immune recovery in mice and nonhuman primates. PLoS One 2010; 5:e11056. [PMID: 20585403 PMCID: PMC2886847 DOI: 10.1371/journal.pone.0011056] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Accepted: 05/12/2010] [Indexed: 02/01/2023] Open
Abstract
Medications that can mitigate against radiation injury are limited. In this study, we investigated the ability of recombinant human growth hormone (rhGH) to mitigate against radiation injury in mice and nonhuman primates. BALB/c mice were irradiated with 7.5 Gy and treated post-irradiation with rhGH intravenously at a once daily dose of 20 microg/dose for 35 days. rhGH protected 17 out of 28 mice (60.7%) from lethal irradiation while only 3 out of 28 mice (10.7%) survived in the saline control group. A shorter course of 5 days of rhGH post-irradiation produced similar results. Compared with the saline control group, treatment with rhGH on irradiated BALB/c mice significantly accelerated overall hematopoietic recovery. Specifically, the recovery of total white cells, CD4 and CD8 T cell subsets, B cells, NK cells and especially platelets post radiation exposure were significantly accelerated in the rhGH-treated mice. Moreover, treatment with rhGH increased the frequency of hematopoietic stem/progenitor cells as measured by flow cytometry and colony forming unit assays in bone marrow harvested at day 14 after irradiation, suggesting the effects of rhGH are at the hematopoietic stem/progenitor level. rhGH mediated the hematopoietic effects primarily through their niches. Similar data with rhGH were also observed following 2 Gy sublethal irradiation of nonhuman primates. Our data demonstrate that rhGH promotes hematopoietic engraftment and immune recovery post the exposure of ionizing radiation and mitigates against the mortality from lethal irradiation even when administered after exposure.
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Affiliation(s)
- Benny J Chen
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America.
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Lu Y, Wang Y, Shen SF, Yan LH, Zhai SJ, Chen BJ, Zhang JF, Zhou SF. Biodegradation of organic compounds from coking wastewater with UASB reactor. Water Sci Technol 2010; 62:1784-1790. [PMID: 20962393 DOI: 10.2166/wst.2010.543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The UASB reactor was applied for biodegradation of organic compounds in coking wastewater. The influent pH ranged between 6.8 and 7.2, and stirring speed and temperature were controlled at 2 r/min and 30±1°C, respectively. The reactor was successfully started up in 133 days. When the influent COD was 2,600 mg/L (VLR was 2.6 kg/m(3) d), the removal rate of COD was about 54% and the effluent VFA was below 400 mg/L. GC/MS analysis indicated that the coking wastewater mainly contained aniline, phenol, o-phenol, p-cresol, benzoic acid, indole, quinoline etc. Twenty four kinds of organic compounds were detected in the influent, and 20 kinds of organic compounds were completely removed in the UASB reactor. The biodegradation of organic compounds followed Grau second-order kinetics. It was proved to be an effective and feasible method for coking wastewater anaerobic treatment.
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Affiliation(s)
- Y Lu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People's Republic of China.
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Yan B, Wang H, Xie D, Wakamatsu N, Anscher MS, Dewhirst MW, Mitchel REJ, Chen BJ, Li CY. Increased skin carcinogenesis in caspase-activated DNase knockout mice. Carcinogenesis 2009; 30:1776-80. [PMID: 19541853 DOI: 10.1093/carcin/bgp146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Caspase-activated DNase (CAD), also called DNA fragmentation factor (DFF), is the enzyme responsible for DNA fragmentation during apoptosis, a hallmark of programmed cell death. CAD/DFF has been shown to suppress radiation-induced carcinogenesis by preventing genomic instability in cells. In this study, we have investigated the role of CAD in chemical carcinogenesis using CAD-null mice and two-stage model of skin carcinogenesis. After topical treatment of mouse skin with dimethylbenz[a]anthracene (DMBA) as an initiator and 12-O-tetradecanoylphorbol-13-acetate (TPA) as a promoting agent, there was a 4-fold increase in the number of papillomas per mouse and 50.8% increase in the incidence of papilloma formation in the CAD knockout mice compared with wild-type littermates. The papillomas in CAD-null mice grew faster and reached larger sizes. These data indicate that loss of CAD function enhances tumorigenesis induced by a chemical carcinogen in the DMBA/TPA two-stage model of skin carcinogenesis in mice.
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Affiliation(s)
- Bin Yan
- Department of Radiation Oncology, Virginia Commonwealth University Medical Center, Richmond, VA 23298, USA
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Crowley SD, Vasievich MP, Ruiz P, Gould SK, Parsons KK, Pazmino AK, Facemire C, Chen BJ, Kim HS, Tran TT, Pisetsky DS, Barisoni L, Prieto-Carrasquero MC, Jeansson M, Foster MH, Coffman TM. Glomerular type 1 angiotensin receptors augment kidney injury and inflammation in murine autoimmune nephritis. J Clin Invest 2009; 119:943-53. [PMID: 19287096 DOI: 10.1172/jci34862] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Accepted: 02/04/2009] [Indexed: 01/13/2023] Open
Abstract
Studies in humans and animal models indicate a key contribution of angiotensin II to the pathogenesis of glomerular diseases. To examine the role of type 1 angiotensin (AT1) receptors in glomerular inflammation associated with autoimmune disease, we generated MRL-Faslpr/lpr (lpr) mice lacking the major murine type 1 angiotensin receptor (AT1A); lpr mice develop a generalized autoimmune disease with glomerulonephritis that resembles SLE. Surprisingly, AT1A deficiency was not protective against disease but instead substantially accelerated mortality, proteinuria, and kidney pathology. Increased disease severity was not a direct effect of immune cells, since transplantation of AT1A-deficient bone marrow did not affect survival. Moreover, autoimmune injury in extrarenal tissues, including skin, heart, and joints, was unaffected by AT1A deficiency. In murine systems, there is a second type 1 angiotensin receptor isoform, AT1B, and its expression is especially prominent in the renal glomerulus within podocytes. Further, expression of renin was enhanced in kidneys of AT1A-deficient lpr mice, and they showed evidence of exaggerated AT1B receptor activation, including substantially increased podocyte injury and expression of inflammatory mediators. Administration of losartan, which blocks all type 1 angiotensin receptors, reduced markers of kidney disease, including proteinuria, glomerular pathology, and cytokine mRNA expression. Since AT1A-deficient lpr mice had low blood pressure, these findings suggest that activation of type 1 angiotensin receptors in the glomerulus is sufficient to accelerate renal injury and inflammation in the absence of hypertension.
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Affiliation(s)
- Steven D Crowley
- Department of Medicine, Division of Nephrology, Duke University Medical Center, and Durham VA Medical Center, Durham, North Carolina 27705, USA
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Chen BJ. Allogeneic memory T cell response. Biol Blood Marrow Transplant 2008; 14:20-22. [PMID: 19418623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Recent data have revealed marked differences in alloresponses mediated by memory T cells during GVH and host-versus-graft (HVG) reactions (summarized in Table 1). Even though the mechanisms are not completely understood, it is clear that all memory T cells including nonallospecific, crossreactive, and allospecific memory T cells have decreased ability to induce GVHD. Selection of memory T cells or removal of naïve T cells will not only prevent GVHD, but could also enhance immune reconstitution, facilitate engraftment, and have the potential to enhance antitumor effects. A clinical trial has been planned. Successful translation of this approach in the clinic will improve the safety, enhance the effectiveness, and broaden the scope of allogeneic hematopoietic stem cell transplantation.
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Affiliation(s)
- Benny J Chen
- Division of Cellular Therapy/BMT, Duke University Medical Center, Durham, North Carolina, USA
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Abstract
We demonstrate that both oxyhemoglobin and deoxyhemoglobin have sequential two-color, two-photon absorption properties that can serve as endogenous contrasts in microvasculature imaging. Using a sensitive modulation transfer technique, we are able to image hemoglobin in red blood cells with micrometer resolution, both in vitro and in vivo. We show that excellent contrast from hemoglobin without any labeling can be obtained in tissue.
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Affiliation(s)
- Dan Fu
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
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