1
|
Gu Y, Xu C, Zhang Z, Fang C, Yu J, He D, Xu G. Association between infarct location and haemorrhagic transformation of acute ischaemic stroke after intravenous thrombolysis. Clin Radiol 2024; 79:e401-e407. [PMID: 38135575 DOI: 10.1016/j.crad.2023.11.024] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 11/07/2023] [Indexed: 12/24/2023]
Abstract
AIM To evaluate the association between computed tomography (CT)-based imaging variables at the time of admission and haemorrhagic transformation (HT) after intravenous thrombolysis (IVT). MATERIALS AND METHODS One hundred and eight patients who were treated with IVT for acute ischaemic stroke (AIS) during January 2021 to July 2023 were analysed retrospectively. The infarct location was classified as cortical or subcortical in accordance with the Alberta Stroke Program Early CT Score (ASPECTS) system. Logistic regression and receiver operating characteristic curve analyses were performed to determine the relationship between ischaemic variables and HT. RESULTS Of the total, 18 (16.7%) patients had HT and seven (6.5%) had symptomatic intracerebral haemorrhage (sICH). Multivariate analysis revealed that cortical ASPECTS was independently associated with HT (odds ratio [OR], 0.197; 95% confidence interval [CI], 0.076-0.511; p=0.001) and cortical ASPECTS was independently associated with sICH (OR, 0.066; 95% CI, 0.009-0.510; p=0.009). To predict HT and sICH, cortical ASPECTS (HT area under the curve [AUC] = 0.881, sICH AUC = 0.971) provided a higher AUC compared with ASPECTS (HT AUC = 0.850, sICH AUC = 0.918). CONCLUSION Cortical ASPECTS seen on CT at the time of admission is associated with HT and sICH after IVT.
Collapse
Affiliation(s)
- Y Gu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - C Xu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - Z Zhang
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - C Fang
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - J Yu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - D He
- Department of Neurology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China
| | - G Xu
- Department of Vascular Surgery and Intervention, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Gusu District, Suzhou 215000, China.
| |
Collapse
|
2
|
Cui HJ, Chen JM, Wang SS, Cen JZ, Xu G, Wen SS, Liu XB, Zhuang J. [Diagnosis and surgical treatment of high-risk anomalous aortic origin of coronary artery]. Zhonghua Wai Ke Za Zhi 2024; 62:242-247. [PMID: 38291641 DOI: 10.3760/cma.j.cn112139-20230721-00021] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Objective: To analyze the diagnosis and surgical treatment of high-risk anomalous aortic origin of coronary artery (AAOCA). Methods: This is a retrospective case series study. From January 2016 to July 2023, 24 cases of high-risk AAOCA underwent surgical treatment in Department of Cardiac Surgery, Guangdong Provincial People's Hospital. There were 18 males and 6 females, operatively aged (M (IQR)) 13 (26) years (range: 0.3 to 57.0 years). They were confirmed by cardiac ultrasound and cardiac CT, all of which had anomalous coronary running between the aorta and the pulmonary artery. There were 15 cases of the right coronary artery from the left aortic sinus of Valsalva, 6 cases of left coronary artery from the right aortic sinus of Valsalva, 3 cases of the sigle coronary artery. Only 3 patients had no obvious related symptoms (2 cases were complicated with a positive exercise stress test and 1 case with other intracardiac malformations), 21 cases had a history of chest tightness, chest pain, or syncope after exercise. Three patients suffered syncope after exercise and underwent cardiopulmonary resuscitation (2 cases were treated with an extracorporeal membrane oxygenerator (ECMO)). The gap from the first symptom to the diagnosis was 4.0 (11.5) months (range: 0.2 to 84.0 months). The detection rate of coronary artery abnormalities suggested by the first cardiac ultrasound was only 37.5% (9/24). Seven patients were complicated with other cardiac diseases (4 cases with congenital heart defects, 2 cases with coronary atherosclerotic heart disease, 1 case with mitral valve disease). Results: All 24 patients underwent surgical treatment (23 cases underwent abnormal coronary artery unroofing, 1 case underwent coronary artery bypass grafting), and 5 patients underwent other intracardiac malformation correction at the same time. There were no death or surgery related complications in the hospital for 30 days after the operation. A patient with preoperative extracorporeal cardiopulmonary resuscitation was continuously assisted by ECMO after emergency AAOCA correction and had complications such as limb ischemia necrosis and renal dysfunction after the operation. During the follow-up of 2.2 (3.3) years (range: 1 month to 7.2 years), one patient who previously underwent percutaneous transluminal coronary angioplasty with a stent implant experienced significant postoperative symptomatic relief, and the other discharged patients had no related symptoms. Conclusions: The accurate rate of initial diagnosis for high-risk AAOCA is still low, but the risk of cardiovascular accidents is high. For sports-related chest pain and other symptoms, more attention should be paid to the detection of AAOCA, especially for adolescents. Exercise stress testing can be helpful in evaluating the cardiovascular risk of asymptomatic AAOCA. Instant surgical treatment can achieve satisfactory curative effects.
Collapse
Affiliation(s)
- H J Cui
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J M Chen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - S S Wang
- Department of Pediatric Cardiology, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J Z Cen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - G Xu
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - S S Wen
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - X B Liu
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| | - J Zhuang
- Department of Cardiac Surgery, Guangdong Provincial People's Hospital, Guangdong Cardiocvascular Diseases Institute, Guangzhou 510080, China
| |
Collapse
|
3
|
Xu G, Liu K, Chen X, Lin Y, Yu C, Nie X, He W, Karin N, Luan Y. Hydrogel-mediated tumor T cell infiltration and immune evasion to reinforce cancer immunotherapy. Nanoscale Horiz 2024; 9:295-304. [PMID: 38086653 DOI: 10.1039/d3nh00401e] [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: 01/30/2024]
Abstract
Cancer immunotherapy has received increasing attention in tumor therapy. However, insufficient infiltration of T cells and over-expressed PD-L1 checkpoint in tumor cells severely impede cancer immunotherapy. Here, an injectable hydrogel was designed to reinforce T cell infiltration and inactivate PD-L1 for powerful cancer immunotherapy. The hydrogel was created by sodium alginate (SA) as the gelator, where linagliptin particles and BMS-202 particles were present in hydrogel micropores. After gelation in the tumor site, the linagliptin powerfully suppressed chemokine CXCL10 degradation, enabling the introduced CXCL10 to realize sustainable chemotaxis towards strong T cell infiltration. Meanwhile, the BMS-202 inactivated PD-L1 of tumor cells, thereby eliminating the PD-L1-governed immune evasion. Therefore, the hydrogel in combination with CXCL10 demonstrated powerful cancer immunotherapy against primary and distant tumors, along with efficient inhibition of lung metastasis. Our study not only offers a potent platform against tumors, but also provides a conceptually new approach to reinforce cancer immunotherapy.
Collapse
Affiliation(s)
- Guixiang Xu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Kai Liu
- Department of Gastrointestinal Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Xiangwu Chen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Yang Lin
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Cancan Yu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Xinxin Nie
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Wenxiu He
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Nathan Karin
- Department of Immunology, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, 32000, Israel
| | - Yuxia Luan
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| |
Collapse
|
4
|
Cavazzoni A, Digiacomo G, Volta F, Alfieri R, Giovannetti E, Gnetti L, Bellini L, Galetti M, Fumarola C, Xu G, Bonelli M, La Monica S, Verzè M, Leonetti A, Eltayeb K, D'Agnelli S, Moron Dalla Tor L, Minari R, Petronini PG, Tiseo M. PD-L1 overexpression induces STAT signaling and promotes the secretion of pro-angiogenic cytokines in non-small cell lung cancer (NSCLC). Lung Cancer 2024; 187:107438. [PMID: 38100954 DOI: 10.1016/j.lungcan.2023.107438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/22/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND Monoclonal antibodies (ICI) targeting the immune checkpoint PD-1/PD-L1 alone or in combination with chemotherapy have demonstrated relevant benefits and established new standards of care in first-line treatment for advanced non-oncogene addicted non-small cell lung cancer (NSCLC). However, a relevant percentage of NSCLC patients, even with high PD-L1 expression, did not respond to ICI, highlighting the presence of intracellular resistance mechanisms that could be dependent on high PD-L1 levels. The intracellular signaling induced by PD-L1 in tumor cells and their correlation with angiogenic signaling pathways are not yet fully elucidated. METHODS The intrinsic role of PD-L1 was initially checked in two PD-L1 overexpressing NSCLC cells by transcriptome profile and kinase array. The correlation of PD-L1 with VEGF, PECAM-1, and angiogenesis was evaluated in a cohort of advanced NSCLC patients. The secreted cytokines involved in tumor angiogenesis were assessed by Luminex assay and their effect on Huvec migration by a non-contact co-culture system. RESULTS PD-L1 overexpressing cells modulated pathways involved in tumor inflammation and JAK-STAT signaling. In NSCLC patients, PD-L1 expression was correlated with high tumor intra-vasculature. When challenged with PBMC, PD-L1 overexpressing cells produced higher levels of pro-angiogenic factors compared to parental cells, as a consequence of STAT signaling activation. This increased production of cytokines involved in tumor angiogenesis largely stimulated Huvec migration. Finally, the addition of the anti-antiangiogenic agent nintedanib significantly reduced the spread of Huvec cells when exposed to high levels of pro-angiogenic factors. CONCLUSIONS In this study, we reported that high PD-L1 modulates STAT signaling in the presence of PBMC and induces pro-angiogenic factor secretion. This could enforce the role of PD-L1 as a crucial regulator of the tumor microenvironment stimulating tumor progression, both as an inhibitor of T-cell activity and as a promoter of tumor angiogenesis.
Collapse
Affiliation(s)
- A Cavazzoni
- Department of Medicine and Surgery University of Parma, Parma, Italy.
| | - G Digiacomo
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - F Volta
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - R Alfieri
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - E Giovannetti
- Department of Medical Oncology, Amsterdam University Medical Center, VU University, Amsterdam, the Netherlands; Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - L Gnetti
- Pathology Unit, University Hospital of Parma, Parma, Italy
| | - L Bellini
- Italian Society of Medicine and Scientific Divulgation, SIMED, Parma, Italy
| | - M Galetti
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Italian Workers' Compensation Authority-INAIL, 00078 Rome, Italy
| | - C Fumarola
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - G Xu
- Department of Medical Oncology, Amsterdam University Medical Center, VU University, Amsterdam, the Netherlands
| | - M Bonelli
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - S La Monica
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - M Verzè
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - A Leonetti
- Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - K Eltayeb
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - S D'Agnelli
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | | | - R Minari
- Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| | - P G Petronini
- Department of Medicine and Surgery University of Parma, Parma, Italy
| | - M Tiseo
- Department of Medicine and Surgery University of Parma, Parma, Italy; Medical Oncology Unit, University Hospital of Parma, Parma, Italy
| |
Collapse
|
5
|
Xu G. [Perioperative management of eosinophilic chronic rhinosinusitis with nasal polyps: my perspective and experience]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:1254-1258. [PMID: 38186102 DOI: 10.3760/cma.j.cn115330-20231120-00229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- G Xu
- Department of ENT, Xiamen Humanity Hospital, Xiamen 361009, China The Otorhinolaryngology Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 518000, China
| |
Collapse
|
6
|
Li M, Xu G, Cui Y, Wang M, Wang H, Xu X, Duan S, Shi J, Feng F. CT-based radiomics nomogram for the preoperative prediction of microsatellite instability and clinical outcomes in colorectal cancer: a multicentre study. Clin Radiol 2023; 78:e741-e751. [PMID: 37487841 DOI: 10.1016/j.crad.2023.06.012] [Citation(s) in RCA: 1] [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] [Received: 12/22/2022] [Revised: 06/15/2023] [Accepted: 06/29/2023] [Indexed: 07/26/2023]
Abstract
AIM To develop and validate a computed tomography (CT)-based radiomics nomogram for preoperative prediction of microsatellite instability (MSI) status and clinical outcomes in colorectal cancer (CRC) patients. MATERIALS AND METHODS This retrospective study enrolled 497 CRC patients from three centres. Least absolute shrinkage and selection operator regression was utilised for feature selection and constructing the radiomics signature. Univariate and multivariate logistic regression analyses were employed to identify significant clinical variables. The radiomics nomogram was constructed by integrating the radiomics signature and the identified clinical variables. The performance of the nomogram was evaluated through receiver operating characteristic curves, calibration curves, and decision curve analysis. Kaplan-Meier analysis was performed to investigate the prognostic value of the nomogram. RESULTS The radiomics signature comprised 10 radiomics features associated with MSI status. The nomogram, integrating the radiomics signature and independent predictors (age, location, and thickness), demonstrated favourable calibration and discrimination, achieving areas under the receiver operating characteristic (ROC) curves (AUCs) of 0.89 (95% confidence interval [CI]: 0.83-0.95), 0.87 (95% CI: 0.79-0.95), 0.88 (95% CI: 0.81-0.96), and 0.86 (95% CI: 0.78-0.93) in the training cohort, internal validation cohort, and two external validation cohorts, respectively. The nomogram exhibited superior performance compared to the clinical model (p<0.05). Additionally, survival analysis demonstrated that the nomogram successfully stratified stage II CRC patients based on prognosis (hazard ratio [HR]: 0.357, p=0.022). CONCLUSION The radiomics nomogram demonstrated promising performance in predicting MSI status and stratifying the prognosis of patients with CRC.
Collapse
Affiliation(s)
- M Li
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China; Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - G Xu
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China; Department of Radiology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Y Cui
- Department of Radiology, Shanxi Cancer Hospital, Shanxi 030013, Shanxi Province, China
| | - M Wang
- Department of Radiology, Yancheng No. 1 People's Hospital, Yancheng 224006, Jiangsu Province, China
| | - H Wang
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - X Xu
- Department of Radiotherapy, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China
| | - S Duan
- GE Healthcare China, Shanghai 210000, China
| | - J Shi
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
| | - F Feng
- Department of Radiology, Affiliated Tumour Hospital of Nantong University, Nantong 226001, Jiangsu Province, China.
| |
Collapse
|
7
|
Xu G, Zheng J, Sun L. Can SGRT be a Substitute for Plan Verification Procedure? Int J Radiat Oncol Biol Phys 2023; 117:e451-e452. [PMID: 37785454 DOI: 10.1016/j.ijrobp.2023.06.1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Verification of plan (VP) has been part of our pre-treatment workflow for treatment isocenter verification. Currently, our center uses simulator for VP procedure for all our patients before the treatment. We would like to investigate if SGRT could be a good substitute for VP procedure to simplify our pre-treatment workflow. MATERIALS/METHODS In Group A (A-c, A-t, A-a), 20 patients of each treatment site (cranial, thorax and abdomen) were selected randomly. Patients did not go through VP procedure. During the first fraction of treatment, the therapists were guided by SGRT system (Vision RT, UK) and aligned the patient to 3mm and 1°using a standard region of interest (ROI). First CBCT was taken as a reference to customize the ROI for better suitability. Next, the patient was re-aligned to 1mm and 1°using the new ROI. Second CBCT was acquired, and 6 degrees of freedoms shifts were recorded. In Group B (B-c, B-t, B-a), 20 patients of each treatment site (cranial, thorax and abdominal) that were assigned for VP over the same period as Group A patients. Group B patients were aligned based on the skin markings drawn during VP procedure. CBCTs were taken at the first fraction of treatment and shifts were recorded. RESULTS A total of 60 CBCT images were analyzed for each group of patients. The absolute mean and standard deviations were shown in Table 1. The results indicated that Group A is superior, if not comparable, to Group B. Table 1: The absolute mean and standard deviations of first fraction of CBCT positioning errors for Group A and B patients. CONCLUSION With appropriate ROI, SGRT is a good or superior substitute for plan verification procedure. Localization verification can be done during day one of treatment which ease the pre-treatment workflow to both patients and clinical team. Analysis of customized ROI will be further studied in the future.
Collapse
Affiliation(s)
- G Xu
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - J Zheng
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - L Sun
- Jiangsu Cancer Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| |
Collapse
|
8
|
Nie X, Shi C, Chen X, Yu C, Jiang Z, Xu G, Lin Y, Tang M, Luan Y. A single-shot prophylactic tumor vaccine enabled by an injectable biomembrane hydrogel. Acta Biomater 2023; 169:306-316. [PMID: 37574158 DOI: 10.1016/j.actbio.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/14/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023]
Abstract
Prophylactic tumor vaccines hold great promise against tumor occurrence. However, their clinical efficacy remains low due to inadequate activation of strong-sustainable immunity. Herein, a biomembrane hydrogel was designed as a powerful single-shot prophylactic tumor vaccine. Mannose-decorated hybrid biomembrane (MHCM) modified with oxidized sodium alginate (OSA) was designed as a gelator (O-MHCM), where the hybrid biomembrane (HCM) is a hybridization of bacterial outer membrane vesicles (OMV) and tumor cell membranes (TCM). The O-MHCM enables quick gelation subcutaneously where the cysteine protease inhibitor E64 is encapsulated in hydrogel micropores. After a single vaccination of E64@O-MHCM hydrogel, MHCM and E64 are released sustainably due to OSA moiety degradation. The MHCM enables active targeting to dendritic cells (DC) and effective DC maturation. Meanwhile, the E64 enables sufficient antigen availability for subsequent cross presentation. Ultimately, strong and sustainable T lymphocyte-mediated immunity was elicited, demonstrating a strong prophylactic effect against breast tumors. This study provides a long-lasting platform to prevent tumor occurrence, opening an innovative avenue for the design of a single-shot prophylactic tumor vaccine. STATEMENT OF SIGNIFICANCE: Developing a single-shot prophylactic tumor vaccine to elicit strong-sustainable immunity is of great interest clinically. Here, a prophylactic tumor vaccine was designed using an injectable biomembrane hydrogel for achieving strong-sustainable immunity. The mannose-tailored hybrid biomembrane was modified with oxidized sodium alginate to result in a gelator, which enabled the formation of the hydrogel after subcutaneous injection. Cysteine protease inhibitor E64 was incorporated into the micropores of the hydrogel. The hydrogel induced strong-sustainable immunity through the continuous release of active components. This was facilitated by the mannose moiety, which enabled active targeting, as well as the antigen and adjuvant function of biomembrane, and the E64-enabled suppression of antigen degradation. The biomembrane hydrogel demonstrated powerful prevention of 4T1 breast tumors. This study offers an attractive strategy for designing a single-shot prophylactic tumor vaccine.
Collapse
Affiliation(s)
- Xinxin Nie
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Chunhuan Shi
- Department of Pharmacy, Dongying People's Hospital, Dongying, 257091, China
| | - Xiangwu Chen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Cancan Yu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Zeyu Jiang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Guixiang Xu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Yang Lin
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Mingtan Tang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Yuxia Luan
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| |
Collapse
|
9
|
Tsai AP, Dong C, Lin PBC, Oblak AL, Viana Di Prisco G, Wang N, Hajicek N, Carr AJ, Lendy EK, Hahn O, Atkins M, Foltz AG, Patel J, Xu G, Moutinho M, Sondek J, Zhang Q, Mesecar AD, Liu Y, Atwood BK, Wyss-Coray T, Nho K, Bissel SJ, Lamb BT, Landreth GE. Genetic variants of phospholipase C-γ2 alter the phenotype and function of microglia and confer differential risk for Alzheimer's disease. Immunity 2023; 56:2121-2136.e6. [PMID: 37659412 PMCID: PMC10564391 DOI: 10.1016/j.immuni.2023.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 06/20/2023] [Accepted: 08/14/2023] [Indexed: 09/04/2023]
Abstract
Genetic association studies have demonstrated the critical involvement of the microglial immune response in Alzheimer's disease (AD) pathogenesis. Phospholipase C-gamma-2 (PLCG2) is selectively expressed by microglia and functions in many immune receptor signaling pathways. In AD, PLCG2 is induced uniquely in plaque-associated microglia. A genetic variant of PLCG2, PLCG2P522R, is a mild hypermorph that attenuates AD risk. Here, we identified a loss-of-function PLCG2 variant, PLCG2M28L, that confers an increased AD risk. PLCG2P522R attenuated disease in an amyloidogenic murine AD model, whereas PLCG2M28L exacerbated the plaque burden associated with altered phagocytosis and Aβ clearance. The variants bidirectionally modulated disease pathology by inducing distinct transcriptional programs that identified microglial subpopulations associated with protective or detrimental phenotypes. These findings identify PLCG2M28L as a potential AD risk variant and demonstrate that PLCG2 variants can differentially orchestrate microglial responses in AD pathogenesis that can be therapeutically targeted.
Collapse
Affiliation(s)
- Andy P Tsai
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Wu Tsai Neurosciences Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Chuanpeng Dong
- Department of Medical and Molecular Genetics, Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Peter Bor-Chian Lin
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Adrian L Oblak
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Radiology & Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Gonzalo Viana Di Prisco
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Nian Wang
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Radiology & Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Nicole Hajicek
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adam J Carr
- Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Emma K Lendy
- Department of Biochemistry, Purdue University, West Lafayette, IN, USA
| | - Oliver Hahn
- Wu Tsai Neurosciences Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Micaiah Atkins
- Wu Tsai Neurosciences Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Aulden G Foltz
- Wu Tsai Neurosciences Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Jheel Patel
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Guixiang Xu
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Miguel Moutinho
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - John Sondek
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Qisheng Zhang
- Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Andrew D Mesecar
- Department of Biochemistry, Purdue University, West Lafayette, IN, USA
| | - Yunlong Liu
- Department of Medical and Molecular Genetics, Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Brady K Atwood
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Tony Wyss-Coray
- Wu Tsai Neurosciences Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Kwangsik Nho
- Department of Radiology & Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Stephanie J Bissel
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Bruce T Lamb
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Gary E Landreth
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN, USA.
| |
Collapse
|
10
|
Xu G, Zhang X, Sun S, Zhou Y, Liu Y, Yang H, Huang Z, Fang F, Sun W, Hong Z, Gao M, Pan H. Synergized Tricomponent All-Inorganics Solid Electrolyte for Highly Stable Solid-State Li-Ion Batteries. Adv Sci (Weinh) 2023; 10:e2207627. [PMID: 37407507 PMCID: PMC10477850 DOI: 10.1002/advs.202207627] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/22/2023] [Indexed: 07/07/2023]
Abstract
Garnet-type oxide Li6.4 La3 Zr1.4 Ta0.6 O12 (LLZTO) features superior ionic conductivity and good stability toward lithium (Li) metal, but requires high-temperature sintering (≈1200 °C) that induces high fabrication cost, poor mechanical processability, and high interface resistance. Here, a novel high-performance tricomponent composite solid electrolyte (CSE) comprising LLZTO-4LiBH4 /xLi3 BN2 H8 is reported, which is prepared by ball milling the LLZTO-4LiBH4 mixture followed by hand milling with Li3 BN2 H8 . Green pellets fabricated by heating the cold-pressed CSE powders at 120 °C offer ultrafast room-temperature ionic conductivity (≈1.73 × 10-3 S cm-1 at 30 °C) and ultrahigh Li-ion transference number (≈0.9999), which enable the Li|Li symmetrical cells to cycle over 1600 h at 30 °C with only 30 mV of overpotential. Moreover, the Li|CSE|TiS2 full cells deliver 201 mAh g-1 of capacity with long cyclability. These outstanding performances are due to the low open porosity in the electrolyte pellets as well as the high intrinsic ionic conductivity and easy deformability of Li3 BN2 H8 .
Collapse
Affiliation(s)
- Guixiang Xu
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Xin Zhang
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Shuyang Sun
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Yangfan Zhou
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Yongfeng Liu
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
- School of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an710021China
| | - Hangwang Yang
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Zhenguo Huang
- School of Civil & Environmental EngineeringUniversity of Technology Sydney81 BroadwayUltimoNSW2007Australia
| | - Fang Fang
- Department of Materials ScienceFudan UniversityShanghai200433China
| | - Wenping Sun
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Zijiang Hong
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Mingxia Gao
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
| | - Hongge Pan
- State Key Laboratory of Silicon and Advanced Semiconductor MaterialsKey Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province and School of Materials Science and EngineeringZhejiang UniversityHangzhou310058China
- School of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an710021China
| |
Collapse
|
11
|
Tang LJ, Li XM, Zhang XW, Luo Y, Xu G. [Effects of advanced platelet-rich fibrin on deep partial-thickness burn wounds in nude mice]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:771-778. [PMID: 37805789 DOI: 10.3760/cma.j.cn501225-20220804-00334] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Objective: To explore the effects of advanced platelet-rich fibrin (A-PRF) on deep partial-thickness burn wounds in nude mice and its mechanism. Methods: The experimental study method was adopted. Forty healthy volunteers in Subei People's Hospital were recruited, including 32 females and 8 males, aged 60 to 72 years. Leukocyte platelet-rich fibrin (L-PRF) and A-PRF membranes were prepared after venous blood was extracted from them. The microstructure of two kinds of platelet-rich fibrin (PRF) membranes was observed by field emission scanning electron microscope. The number of samples was 3 in the following experiments. The L-PRF and A-PRF membranes were divided into L-PRF group and A-PRF group and cultured, and then the release concentrations of platelet-derived growth factor-AB (PDGF-AB) and vascular endothelial growth factor (VEGF) in culture supernatant were determined by enzyme-linked immunosorbent assay on culture day 1, 3, 7, and 14. Mice L929 fibroblasts (Fbs) were divided into L-PRF group and A-PRF group, and cultured with L-PRF or A-PRF conditioned medium, respectively. On culture day 1, 3, and 7, the cell proliferation activity was detected by thiazole blue method. The cell migration rate was detected and calculated at 24 h after scratching by scratch test. Thirty-six male BALB/c nude mice aged 6-8 weeks were selected to make a deep partial-thickness burn wound on one hind leg, and then divided into normal saline group, L-PRF group, and A-PRF group, according to the random number table, with 12 mice in each group. The wounds of nude mice in normal saline group were only washed by normal saline, while the wounds of nude mice in L-PRF group and A-PRF group were covered with the corresponding membranes in addition. The wounds of nude mice in the 3 groups were all bandaged and fixed with dressings. On treatment day 4, 7, and 14, the wound healing was observed and the wound healing rate was calculated. Masson staining was used to observe the new collagen in wound tissue, and immunohistochemical staining was used to detect the percentage of CD31 positive cells in the wound. Data were statistically analyzed with independent sample t test, analysis of variance for repeated measurement, analysis of variance for factorial design, one-way analysis of variance, and least significant difference test. Results: L-PRF membrane's dense network structure was composed of coarse fibrin bundles, with scattered white blood cells and platelets with complete morphology. A-PRF membrane's loose network structure was composed of fine fibrin bundles, with scattered small amount of deformed white blood cells and platelets. On culture day 1, the release concentration of PDGF-AB in PRF culture supernatant in A-PRF group was significantly higher than that in L-PRF group (t=5.73, P<0.05), while the release concentrations of VEGF in PRF culture supernatant in the two groups were similar (P>0.05). On culture day 3, 7, and 14, the release concentrations of PDGF-AB and VEGF in PRF culture supernatant in A-PRF group were significantly higher than those in L-PRF group (with t values of 6.93, 7.45, 5.49, 6.97, 8.97, and 13.64, respectively, P<0.05). On culture day 3, 7, and 14, the release concentrations of PDGF-AB and VEGF in PRF culture supernatant in the two groups were all significantly higher than those in the previous time points within the group (P<0.05). On culture day 1, 3, and 7, the proliferation activity of mice Fbs in A-PRF group was 0.293±0.034, 0.582±0.054, and 0.775±0.040, respectively, which were significantly stronger than 0.117±0.013, 0.390±0.036, and 0.581±0.037 in L-PRF group (with t values of 8.38, 5.14, and 6.16, respectively, P<0.05). At 24 h after scratching, the migration rate of mice Fbs in A-PRF group was (60.9±2.2)%, which was significantly higher than (39.1±2.3)% in L-PRF group (t=11.74, P<0.05). On treatment day 4, the wound exudates of nude mice in L-PRF group and A-PRF group were less with no obvious signs of infection, while the wounds of nude mice in normal saline group showed more exudation. On treatment day 7, the wounds of nude mice in L-PRF group and A-PRF group were dry and crusted, while there was still a small amount of exudate in the wounds of nude mice in normal saline group. On treatment day 14, the wounds of nude mice in A-PRF group tended to heal; a small portion of wounds remained in nude mice in L-PRF group; the wound of nude mice was still covered with eschar in normal saline group. On treatment day 4, 7, and 14, the wound healing rate and percentage of CD31 positive cells of nude mice in L-PRF group were all significantly higher than those in normal saline group (P<0.05); compared with those in normal saline group and L-PRF group, the wound healing rate of nude mice in A-PRF group was significantly increased (P<0.05), the newborn collagen was orderly and evenly distributed, with no excessive deposition, and the percentage of CD31 positive cells was significantly increased (P<0.05). Conclusions: The stable fibrin network structure of A-PRF can maintain the sustained release of growth factors, accelerate cell proliferation, and promote cell migration, so as to shorten the healing time and improve the healing quality of deep partial-thickness burn wounds in nude mice.
Collapse
Affiliation(s)
- L J Tang
- Department of Burn Rehabilitation, Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University, Shanghai 201613, China
| | - X M Li
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - X W Zhang
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - Y Luo
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| | - G Xu
- Department of Burns and Plastic Surgery of Subei People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou 225001, China
| |
Collapse
|
12
|
Lin C, Xu G, Gao S, Feng T, Li S. Tuberculosis infection following immune checkpoint inhibitor treatment for advanced cancer: a case report and literature review. Front Immunol 2023; 14:1162190. [PMID: 37304292 PMCID: PMC10248429 DOI: 10.3389/fimmu.2023.1162190] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/15/2023] [Indexed: 06/13/2023] Open
Abstract
Objective To investigate the clinical features of active tuberculosis (TB) infection due to immune checkpoint inhibitors (ICIs) treatment in patients with advanced cancer. Methods We report the diagnosis and treatment of a case of pulmonary malignancy (squamous cell carcinoma, cT4N3M0 IIIC), secondary to active TB infection following ICIs therapy. Moreover, we summarize and analyze other related cases collected from the China National Knowledge Infrastructure (CNKI), Wanfang Database, PubMed, the Web of Science, and EMBASE (up to October 2021). Results A total of 23 patients, including 20 males and 3 females who were aged 49-87 years with a median age of 65 years, were included in the study. Twenty-two patients were diagnosed by Mycobacterium tuberculosis culture or DNA polymerase chain reaction (PCR), while the remaining patient was diagnosed by tuberculin purified protein derivative and pleural biopsy. One case had an interferon-gamma release assay (IGRA) to rule out latent TB infection prior to the application of ICI. Fifteen patients received an anti-tuberculosis regimen. Among the 20 patients with a description of clinical regression, 13 improved and 7 died. Seven of the patients who improved were treated with ICI again and four of them did not experience a recurrence or worsening of TB. The case diagnosed in our hospital also improved after receiving anti-TB treatment after stopping ICI therapy, and continued chemotherapy on the basis of anti-TB treatment, and his condition is relatively stable at present. Conclusion Due to the lack of specificity of TB infection following ICIs therapy, patients should be followed for fever and respiratory symptoms for 6.3 months after drug administration. It is recommended that IGRA should be performed before ICIs therapy and the development of TB during immunotherapy in patients who are positive in IGRA should be closely monitored. The symptoms of TB in most patients can be improved with ICIs withdrawal and anti-TB treatment, but there is still a need to be alert to the potentially fatal risk of TB.
Collapse
|
13
|
Wang M, Zhang Q, Xu G, Huang S, Zhao W, Liang J, Huang J, Cai S, Zhao H. [Association between vitamin D level and blood eosinophil count in healthy population and patients with chronic obstructive pulmonary disease]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:727-732. [PMID: 37313813 DOI: 10.12122/j.issn.1673-4254.2023.05.07] [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: 06/15/2023]
Abstract
OBJECTIVE To investigate the prevalence of vitamin D deficiency and its association with blood eosinophil count in healthy population and patients with chronic obstructive pulmonary disease (COPD). METHODS We analyzed the data of a total 6163 healthy individuals undergoing routine physical examination in our hospital between October, 2017 and December, 2021, who were divided according to their serum 25(OH)D level into severe vitamin D deficiency group (< 10 ng/mL), deficiency group (< 20 ng/mL), insufficient group (< 30 ng/mL) and normal group (≥30 ng/mL). We also retrospectively collected the data of 67 COPD patients admitted in our department from April and June, 2021, with 67 healthy individuals undergoing physical examination in the same period as the control group. Routine blood test results, body mass index (BMI) and other parameters were obtained from all the subjects, and logistic regression models were used to investigate the association between 25(OH)D levels and eosinophil count. RESULTS The overall abnormal rate of 25(OH)D level (< 30 ng/mL) in the healthy individuals was 85.31%, and the rate was significantly higher in women (89.29%) than in men. Serum 25(OH)D levels in June, July, and August were significantly higher than those in December, January, and February. In the healthy individuals, blood eosinophil counts were the lowest in severe 25(OH)D deficiency group, followed by the deficiency group and insufficient group, and were the highest in the normal group (P < 0.05). Multivariable regression analysis showed that an older age, a higher BMI, and elevated vitamin D levels were all risk factors for elevated blood eosinophils in the healthy individuals. The patients with COPD had lower serum 25(OH)D levels than the healthy individuals (19.66±7.87 vs 26.39±9.28 ng/mL) and a significantly higher abnormal rate of serum 25(OH)D (91% vs 71%; P < 0.05). A reduced serum 25(OH)D level was a risk factor for COPD. Blood eosinophils, sex and BMI were not significantly correlated with serum 25(OH)D level in patients with COPD. CONCLUSION Vitamin D deficiency is common in both healthy individuals and COPD patients, and the correlations of vitamin D level with sex, BMI and blood eosinophils differ obviously between healthy individuals and COPD patients.
Collapse
Affiliation(s)
- M Wang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Q Zhang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G Xu
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Huang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W Zhao
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Liang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Huang
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Cai
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - H Zhao
- Laboratory of Chronic Airway Diseases, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| |
Collapse
|
14
|
Chen X, Jiang Z, Lin Y, Yu C, Nie X, Xu G, Xu W, Jiang Y, Luan Y. Tumor lysates-constructed hydrogel to potentiate tumor immunotherapy. J Control Release 2023; 358:345-357. [PMID: 37150404 DOI: 10.1016/j.jconrel.2023.05.005] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/17/2023] [Accepted: 05/03/2023] [Indexed: 05/09/2023]
Abstract
T cell-based immunotherapy (TCBI) is an emerging approach to combat tumors. However, the outcome of TCBI is still far from satisfaction clinically, owing to stumbling blocks from insufficient immunogenicity, T cell exhaustion and immune evasion from programmed death-1/programmed death-ligand 1 (PD-1/PD-L1) pathway. Herein, an injectable tumor lysates-constructed hydrogel is reported to address these issues. Chemically modified tumor lysates are, for the first time, designed as the gelator to intratumorally construct hydrogel, achieving a robust antigen reservoir to induce strong immunogenicity. Meanwhile, hydrogel-encapsulated nicotinamide riboside and SB415286 enable strong mitophagy in T cells to prevent their exhaustion as well as powerfully genetical suppression of PD-1 expression to regulate immune evasion. Thus, our injectable hydrogel creates a robust immune niche within tumor, enabling to significantly potentiate TCBI. Our strategy pharmacologically regulates body's own T cells in situ, demonstrating potent immunotherapeutic effects and offering a conceptually new approach for TCBI.
Collapse
Affiliation(s)
- Xiangwu Chen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Zeyu Jiang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yang Lin
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Cancan Yu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xinxin Nie
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Guixiang Xu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Wei Xu
- Department of Clinical Pharmacy, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China.
| | - Yue Jiang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| | - Yuxia Luan
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| |
Collapse
|
15
|
Liang Z, Xu G, Liu T, Zhong Y, Mo F, Li Z. Quantitatively biomechanical response analysis of posterior musculature reconstruction in cervical single-door laminoplasty. Comput Methods Programs Biomed 2023; 233:107479. [PMID: 36933316 DOI: 10.1016/j.cmpb.2023.107479] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/01/2023] [Accepted: 03/10/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND AND OBJECTIVE The current trend of laminoplasty is developing toward the goal of muscle preservation and minimum tissue damage. Given this, muscle-preserving techniques in cervical single-door laminoplasty have been modified with protecting the spinous processes at the sites of C2 and/or C7 muscle attachment and reconstruct the posterior musculature in recent years. To date, no study has reported the effect of preserving the posterior musculature during the reconstruction. The purpose of this study is to quantitatively evaluate the biomechanical effect of multiple modified single-door laminoplasty procedures for restoring stability and reducing response level on the cervical spine. METHODS Different cervical laminoplasty models were established for evaluating kinematics and response simulations based on a detailed finite element (FE) head-neck active model (HNAM), including ① C3 - C7 laminoplasty (LP_C37), ② C3 - C6 laminoplasty with C7 spinous process preservation (LP_C36), ③ C3 laminectomy hybrid decompression with C4 - C6 laminoplasty (LT_C3 + LP_C46) and ④ C3 - C7 laminoplasty with unilateral musculature preservation (LP_C37 + UMP). The laminoplasty model was validated by the global range of motion (ROM) and percentage changes relative to the intact state. The C2 - T1 ROM, axial muscle tensile force, and stress/strain levels of functional spinal units were compared among the different laminoplasty groups. The obtained effects were further analysed by comparison with a review of clinical data on cervical laminoplasty scenarios. RESULTS Analysis of the locations of concentration of muscle load showed that the C2 muscle attachment sustained more tensile loading than the C7 muscle attachment, primarily in flexion-extension (FE) and in lateral bending (LB) and axial rotation (AR), respectively. Simulated results further quantified that LP_C36 primarily produced 10% decreases in LB and AR modes relative to LP_C37. Compared with LP_C36, LT_C3 + LP_C46 resulted in approximately 30% decreases in FE motion; LP C37 + UMP also showed a similar trend. Additionally, when compared to LP_C37, LT_C3 + LP_C46 and LP C37 + UMP reduced the peak stress level at the intervertebral disc by at most 2-fold as well as the peak strain level of the facet joint capsule by 2-3-fold. All these findings were well correlated with the result of clinical studies comparing modified laminoplasty and classic laminoplasty. CONCLUSIONS Modified muscle-preserving laminoplasty is superior to classic laminoplasty due to the biomechanical effect of the posterior musculature reconstruction, with a retained postoperative ROM and loading response levels of the functional spinal units. More motion-sparing is beneficial for increasing cervical stability, which probably accelerates the recovery of postoperative neck movement and reduces the risk of the complication for eventual kyphosis and axial pain. Surgeons are encouraged to make every effort to preserve the attachment of the C2 whenever feasible in laminoplasty.
Collapse
Affiliation(s)
- Z Liang
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China; College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan 410082, China
| | - G Xu
- Department of Orthopedics, Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, Guangzhou University of Chinese Medicine, Shenzhen 518000, China
| | - T Liu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan 410011, China
| | - Y Zhong
- Department of Spine Surgery, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China
| | - F Mo
- College of Mechanical and Vehicle Engineering, Hunan University, Changsha, Hunan 410082, China.
| | - Z Li
- Department of Spine Surgery, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi 530023, China.
| |
Collapse
|
16
|
Ma Z, Zhao X, Zhang X, Xu G, Liu F. [DTX2 overexpression promotes migration and invasion of colorectal cancer cells through the Notch2/Akt axis]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:340-348. [PMID: 37087577 PMCID: PMC10122736 DOI: 10.12122/j.issn.1673-4254.2023.03.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
Abstract
OBJECTIVE To investigate the effect of changes in DTX2 expression level on migration and invasion of colorectal cancer (CRC) cells and explore the mechanism. METHODS Two CRC cell lines SW620 and LoVo were transfected with a specific shRNA targeting DTX2 (DTX2-shRNA) or a DTX2-overexpressing plasmid (pcDNA-DTX2), and the transfection efficiency was evaluated with RT-qPCR and Western blotting. Scratch and Transwell assays were used to assess the changes in migration and invasion ability of the transfected cells, and the cellular expression levels of Notch2, NICD, AKT, p-Akt and MMP-2/9 proteins were detected with Western blotting. The CRC cells were co-transfected with pcDNA-DTX2 and Notch2 siRNA to assess the effect of Notch2 knockdown on DTX2 overexpression-induced enhancement of cell migration and invasion. RESULTS The expression levels of DTX2 at both the mRNA and protein levels were significantly decreased in CRC cells transfected with DTX2- shRNA (P < 0.01) and increased in cells transfected with pcDNA-DTX2 (P < 0.01). Scratch and Transwell assays showed that the migration and invasion abilities of CRC cells were significantly lowered following DTX2 knockdown (P < 0.01) and were enhanced in cells with DTX2 overexpression (P < 0.01). The expression levels of Notch2, NICD, p-Akt and MMP-2 proteins decreased significantly in CRC cells with DTX2 knockdown (P < 0.05) and increased obviously in DTX2-overexpressing cells (P < 0.05). In both of the two CRC cell lines, transfection with Notch2 siRNA obviously reversed the effect of DTX2 overexpression in promoting cell migration and invasion (P < 0.01) and expressions of the related proteins. CONCLUSION DTX2 overexpression promotes migration and invasion of CRC cells through the Notch2/Akt axis, suggesting the potential of DTX2 as a new biological indicator of CRC.
Collapse
Affiliation(s)
- Z Ma
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - X Zhao
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - X Zhang
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - G Xu
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| | - F Liu
- Department of Anorectal Surgery, Dalian University Affiliated Xinhua Hospital, Dalian 116021, China
| |
Collapse
|
17
|
Lin Y, Chen X, Yu C, Xu G, Nie X, Cheng Y, Luan Y, Song Q. Radiotherapy-mediated redox homeostasis-controllable nanomedicine for enhanced ferroptosis sensitivity in tumor therapy. Acta Biomater 2023; 159:300-311. [PMID: 36642338 DOI: 10.1016/j.actbio.2023.01.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/18/2022] [Accepted: 01/06/2023] [Indexed: 01/15/2023]
Abstract
Ferroptosis has received increasing attentions in cancer therapy owing to its unique advantages over apoptosis. However, ferroptosis is governed by the efficiency of reactive oxygen species (ROS) production and the tumor cell antioxidant microenvironment that compromises therapeutic efficacy of ferroptosis. It is of great significance to develop a strategy that can both achieve high-efficiency ROS production and modulate tumor cell antioxidant microenvironment to amplify ferroptosis. However, until now, such a strategy has rarely been realized. Here, we, for the first time, reported a radiotherapy -mediated redox homeostasis-controllable nanomedicine for amplifying ferroptosis sensitivity in tumor therapy. The nanomedicine is constructed by co-assembling a ferroptosis inducer hemin and a thioredoxin 1 (Trx-1) inhibitor 1-methylpropyl 2-imidazolyl disulfide (PX-12) with human serum albumin. For our nanomedicine, hemin converts H2O2 to ROS via Fenton reaction to induce ferroptosis while PX-12 effectively inhibits the activity of antioxidant Trx-1 to suppress ROS depletion, resulting in amplified ferroptosis. Particularly, combining radiotherapy with the nanomedicine, radiotherapy depletes the other key antioxidant glutathione and generates additional radiotherapy-induced ROS, further boosting the ferroptosis effect. Therefore, our strategy can simultaneously ensure efficient ROS production and regulation of tumor cell antioxidant microenvironment, thereby enhancing efficacy of ferroptosis in tumor therapy. Our work offers an innovative approach to amplify ferroptosis sensitivity against tumors by simultaneously promoting ROS production and regulating redox homeostasis. STATEMENT OF SIGNIFICANCE: The antioxidants such as thioredoxin 1 (Trx-1) and glutathione (GSH) in tumor cells, are significantly upregulated by the innate cancer cellular redox homeostasis, severely restricting the reactive oxygen species (ROS)-based therapy and compromising the effect of Fenton reaction-induced ferroptosis against tumors. It is urgent to develop a strategy to simultaneously achieve Fenton reaction-induced ferroptosis and regulate the cancer cellular redox homeostasis against upregulated levels of Trx-1 and GSH. A radiotherapy-mediated redox homeostasis-regulatable nanomedicine was designed for amplifying ferroptosis sensitivity in tumor therapy, where the therapeutic efficacy of ferroptosis against tumors can be significantly amplified by integrating Fenton reaction-induced and radiotherapy-induced ferroptosis as well as PX-12-enabled inhibition of antioxidant Trx-1 and radiotherapy-induced downregulation of antioxidant GSH levels.
Collapse
Affiliation(s)
- Yang Lin
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xiangwu Chen
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Cancan Yu
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Guixiang Xu
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xinxin Nie
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yufeng Cheng
- Department of Radiation Oncology, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, China
| | - Yuxia Luan
- Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
| | - Qingxu Song
- Department of Radiation Oncology, Qilu Hospital of Shandong University, 107 West Wenhua Road, Jinan, Shandong 250012, China; Key Laboratory of Chemical Biology (Ministry of Education), NMPA Key Laboratory for Technology Research and Evaluation of Drug Products, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
| |
Collapse
|
18
|
SELVASKANDAN H, Gaultney T, Heath D, Linfoot S, Xu G. WCN23-0139 Leveraging modern machine learning tools to predict outcomes of in-patient acute kidney injury. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.220] [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: 03/22/2023] Open
|
19
|
Zhao J, Chen P, Xu G, Sun J, Ruan Y, Xue M, Wu Y. [ Bushen Huoxue Fang improves recurrent miscarriage in mice by down-regulating the JAK2/STAT3 pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:265-270. [PMID: 36946047 PMCID: PMC10034533 DOI: 10.12122/j.issn.1673-4254.2023.02.15] [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: 03/23/2023]
Abstract
OBJECTIVE To investigate the efficacy of Bushen Huoxue Fang (BSHXF, a traditional Chinese medicine formula) for improving recurrent spontaneous abortion (RSA) in mice and the role of tyrosine kinase (JAK2) and transcriptional activator (STAT3) signaling pathway in its therapeutic mechanism. METHODS Female CBA/J mice were caged with male DBA/2 mice to establish RSA mouse models, which were randomly divided into model group, dydrogesterone group and BSHXF group, with the female mice caged with male BALB/c mice as the control group (n=6). From the first day of pregnancy, the mice were subjected to daily intragastric administration of BSHXF, dydrogesterone, or distilled water (in control and model groups) for 12 days. After the treatments, serum levels of antithrombin III (AT-III), activated protein C (APC), tissue plasminogen activator (t-PA), progesterone, human chorionic gonadotropin (HCG), and estradiol (E2) were detected in each group using ELISA. HE staining was used to observe the morphological changes of the endometrium of the mice. Western blotting was performed to determine the expressions of p-JAK2, p-Stat3 and Bcl-2 in the placenta of the mice. RESULTS Compared with the control mice, the mouse models of RSA showed a significantly increased embryo loss rate with decreased serum levels of AT-III, T-PA, progesterone, APC and HCG, increased placental expressions of p-JAK2, p-STAT3 and Bax, and decreased expression of Bcl-2 (P < 0.05). Treatments with BSHXF and dydrogesterone both increased serum levels of AT-III, t-PA and HCG in the mouse models; Serum APC level was significantly reduced in BSHXF group and serum progesterone level was significantly increased in dydrogesterone group (P < 0.05). CONCLUSION BSHXF can improve the prethrombotic state and inhibit cell apoptosis by downregulating the JAK2/STAT3 pathway to increase the pregnancy rate in mouse models of RSA.
Collapse
Affiliation(s)
- J Zhao
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - P Chen
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - G Xu
- Division II of Department of Reproductive Center, The first affiliated hospital of Henan University of Chinese Medicine, Henan Zhengzhou 450000, China
| | - J Sun
- Department of Obstetrics and Gynecology, First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Y Ruan
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - M Xue
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| | - Y Wu
- First Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou 450000, China
| |
Collapse
|
20
|
Lin Z, Wang H, Song J, Xu G, Lu F, Ma X, Xia X, Jiang J, Zou F. The role of mitochondrial fission in intervertebral disc degeneration. Osteoarthritis Cartilage 2023; 31:158-166. [PMID: 36375758 DOI: 10.1016/j.joca.2022.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/06/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022]
Abstract
Low back pain (LBP) is an extremely common disorder and is a major cause of disability globally. Intervertebral disc degeneration (IVDD) is the main contributor to LBP. Nevertheless, the specific mechanisms underlying the pathogenesis of IVDD remain unclear. Mitochondria are highly dynamic organelles that continuously undergo fusion and fission, known as mitochondrial dynamics. Accumulating evidence has revealed that aberrantly activated mitochondrial fission leads to mitochondrial fragmentation and dysfunction, which are involved in the development and progression of IVDD. To date, research into mitochondrial dynamics in IVDD is at an early stage. The present narrative review aims to summarize the most recent findings about the role of mitochondrial fission in the pathogenesis of IVDD.
Collapse
Affiliation(s)
- Z Lin
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - H Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - J Song
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - G Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - F Lu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - X Ma
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - X Xia
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - J Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| | - F Zou
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai 200040, China.
| |
Collapse
|
21
|
Li C, Dong X, Yuan Q, Xu G, Di Z, Yang Y, Hou J, Zheng L, Chen W, Wu G. Identification of novel characteristic biomarkers and immune infiltration profile for the anaplastic thyroid cancer via machine learning algorithms. J Endocrinol Invest 2023:10.1007/s40618-023-02022-6. [PMID: 36725810 DOI: 10.1007/s40618-023-02022-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 01/24/2023] [Indexed: 02/03/2023]
Abstract
PURPOSE Anaplastic thyroid cancer (ATC) is a rare and lethal malignant cancer. In recent years, the application of molecular-driven targeted therapy and immunotherapy has markedly improved the prognosis of ATC. This study aimed to identify characteristic genes for ATC diagnosis and revealed the role of ATC characteristic genes in drug sensitivity and immune cell infiltration. METHODS We downloaded ATC RNA-sequencing data from the GEO database. Following the combination and normalization of the dataset, we first divided the combined datasets into the training cohort and the validation cohort. We identified differentially expressed genes (DEGs) in ATC by differential expression analysis in the training cohort. We used two machine learning algorithms, least absolute shrinkage and selection operator (LASSO) and support vector machine-recursive feature elimination (SVM-RFE) to identify ATC characteristic genes. The CIBERSORT algorithm was performed to calculate the abundance of various immune cells in ATC. Finally, we validated the expression of ATC characteristic genes by quantitative RT-PCR (RT-qPCR) in ATC cell lines and immunohistochemistry (IHC). RESULTS A total of 425 DEGs were identified in the training cohort, including 240 upregulated genes and 185 downregulated genes. Four ATC characteristic genes (ADM, PXDN, MMP1, and TFF3) were identified, and their diagnostic value was validated in the validation cohort (AUC in ROC analysis > 0.75). We established a practical gene expression-based nomogram to accurately predict the probability of ATC. We also found that ATC characteristic biomarkers are associated with the tumor immune microenvironment and drug sensitivity. CONCLUSION ADM, PXDN, MMP1, and TFF3 might serve as potential ATC diagnostic biomarkers and may be helpful for ATC molecular targeted therapy and immunotherapy.
Collapse
Affiliation(s)
- C Li
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - X Dong
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Q Yuan
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - G Xu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Z Di
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
- Department of Gastric and Colorectal Surgical Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Y Yang
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - J Hou
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - L Zheng
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - W Chen
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
| | - G Wu
- Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.
| |
Collapse
|
22
|
Zhang J, Xu G, Xu L. Number of Teeth and Denture Use Are Associated with Frailty among Chinese Older Adults: A Cohort Study Based on the CLHLS from 2008 to 2018. J Nutr Health Aging 2023; 27:972-979. [PMID: 37997718 DOI: 10.1007/s12603-023-2014-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/01/2023] [Indexed: 11/25/2023]
Abstract
OBJECTIVES The aim of this study was to determine the association between oral health and the development of frailty over a 10-year period in older Chinese adults. DESIGN This was a cohort study. SETTING AND PARTICIPANTS The data in this study were derived from the 2008, 2011, 2014 and 2018 waves of the Chinese Longitudinal Health Longevity Survey (CLHLS). The final analysis included 1155 older adults who had complete data for the Frailty Index (FI) and the other factors(oral health, sociodemographics, etc) that were analyzed in the study. MEASUREMENTS Frailty was assessed by the FI, which consists of 40 deficits(self-health assessments, diseases, physical functions,etc). Multivariable logistic regression was carried out to calculate the odds ratios (ORs) of the independent variables,which were obtained from investigator surveys and self-reports, in association with the development of frailty. RESULTS The prevalence of frailty at baseline was 22.94%, and the 10-year incidence of frailty was 24.16% (215/890). Age, number of natural teeth, use of dentures, toothache and sex were independent risk factors for frailty at baseline. After full adjustment, multivariate logistic regression analysis indicated that compared with having ≥21 teeth, edentulism (ORs 3.575; 95% CI 2.095,6.101) and partial tooth loss (ORs 2.448; 95% CI 1.592,3.766) were associated with progression to frailty. Compared with those with ≥21 teeth, those with <21 teeth and without dentures (ORs 2.617; 95% CI 1.713,3.999) were more likely to progress to frailty. CONCLUSION The loss of natural teeth is associated with the progression of frailty in older Chinese adults and denture using can help lower the odds of being frailty. Further research on maintain natural teeth and the appropriate use of dentures may help to establish effective frailty prevention strategies for the older adults.
Collapse
Affiliation(s)
- J Zhang
- Liyu Xu, Department of Geriatrics, Zhejiang Hospital, Hangzhou 310013, People's Republic of China, ; Tel. :+86 13486183817
| | | | | |
Collapse
|
23
|
Yu XY, Zhao MY, Zhang Y, Xu G. [Research advances on the treatment of diabetic foot ulcers with autologous platelet-rich fibrin]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1185-1189. [PMID: 36594150 DOI: 10.3760/cma.j.cn501225-20220110-00001] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Diabetic foot is one of the serious complications of diabetic patients, which makes the society and public health bear a huge economic burden. In recent years, more and more studies at home and abroad have been conducted on the treatment of chronic wounds with autologous platelet-rich fibrin, and the therapeutic concepts and methods have been updated constantly. In this paper, we reviewed the general situation of autologous platelet-rich fibrin, the mechanism of autologous platelet-rich fibrin in promoting the healing of diabetic foot ulcers and the new progress in its application, so as to provide a new strategy for the repair of diabetic foot ulcers.
Collapse
Affiliation(s)
- X Y Yu
- Graduate School of Dalian Medical University, Dalian 116044, China
| | - M Y Zhao
- The First Department of Facial and Neck Plastic Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China
| | - Y Zhang
- Department of Burns and Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
| | - G Xu
- Department of Burns and Plastic Surgery, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
| |
Collapse
|
24
|
Wu YJ, Liu T, Ma JR, Wang WY, Ou SM, Zhao Y, Gao J, Xu G, Sun YQ. [The influence of two kinds of transnasal endoscopic surgery on the outcome status of sinus cavity in patients with eosinophilic chronic rhinosinusitis with nasal polyps]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:1450-1456. [PMID: 36707949 DOI: 10.3760/cma.j.cn115330-20220905-00540-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Objective: To investigate the trend of postoperative cavity status in patients with eosinophilic chronic sinusitis with nasal polyps (eCRSwNP) who underwent total nasalization surgery and partial reboot surgery. And to discuss the relationship between tissue eosinophil counts and status of postoperative cavity. Methods: Patients with eCRSwNP in four tertiary medical centers (Longgang ENT Hospital, Xiamen Humanity Hospital, Guangdong Clifford Hospital and the First Affiliated Hospital of Sun Yat-Sen University) from March 2018 to October 2021 were divided into 2 groups. The group without previous surgery history was performed for the nasalization surgery, and another group with previous surgery history underwent the part-reboot surgery. The follow-up time after operation was defined as the following 5 stages: 6, 12, 20-24, 36 and more than 42 months. According to FESS-95 Guangzhou standard, status of sinus cavity was assessed and classified into 3 categories: good, better and bad. The association between the sinus cavity status and tissue eosinophil counts in the above 5 stages was analyzed by one-way ANOVA, and P<0.05 was considered statistically significant. Results: A total of 72 eCRSwNP patients finished the follow-up in this study. There were 47 males and 25 females in these patients, aged from 11 to 67 years. A total of 50 cases underwent nasalization surgery and 22 cases underwent partial reboot surgery. With the follow-up time from 6 to 48 months, there were 72 cases (100.0%) who completed 6 months and 12 months follow up, 46 cases (63.9%) for 20-24 months, 36 cases (50.0%) for 32-36 months and 16 cases (22.2%) with the follow-up time more than 42 months. No matter what kind of surgery, there was no "bad" situation of the surgical cavity status 6 months after the operation, and the differentiation gradually occurred more than 12 months after the surgery. Moreover, the rates of "good" cavity status for the 5 stages in the group of nasalization surgery were 78.0%, 66.0%, 56.7%, 47.6% and 42.9%, and were 63.6%, 45.5%, 25.0%, 20.0% and 11.1% in the partial reboot surgery group, respectively, suggesting that the status of nasal cavity in nasalization surgery group was always better than that in partial reboot surgery group in every period. In addition, the "bad" rate was 0, 8.0%, 10.0%, 14.3% and 28.6% in the group of nasalization surgery, and was 0, 27.3%, 18.8%, 33.3% and 55.6% in the partial reboot surgery group, respectively. The average percentage of tissue eosinophil counts in the 72 cases was 42.1%, which had no obvious effect on the status of the surgical cavity (P>0.05). Conclusions: For eCRSwNP patients, the operative cavity status in the patients without previous operation history treated with nasalization surgery is good. The time of 1-2 years after surgery is the main period for sinus lesions. The counts of tissue eosinophils has no significant influence on surgical sinus cavity status in the eCRSwNP patients.
Collapse
Affiliation(s)
- Y J Wu
- Department of Otorhinolaryngology, Longgang ENT Hospital & Shenzhen Key Laboratory of ENT Institute, Shenzhen 518172, China
| | - T Liu
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - J R Ma
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - W Y Wang
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - S M Ou
- Department of Otorhinolaryngology of Guangdong Clifford Hospital, Guangzhou 511495, China
| | - Y Zhao
- Department of Pathology of District Maternity and Longgang Heathcare Hospital, Shenzhen 518172, China
| | - J Gao
- Department of Pathology of Xiamen Humanity Hospital, Xiamen 361009, China
| | - G Xu
- Department of Otorhinolaryngology of Xiamen Humanity Hospital, Xiamen 361009, China Otorhinolaryngology Hospital of the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 518000, China
| | - Y Q Sun
- Department of Otorhinolaryngology of the Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen 510080, China
| |
Collapse
|
25
|
Puntambekar SS, Moutinho M, Lin PB, Jadhav V, Tumbleson‐Brink D, Balaji A, Benito MA, Xu G, Oblak AL, Reeves CAL, Landreth GE, Lamb BT. Cx3cr1 deficiency aggravates Aβ driven neurodegeneration and cognitive decline in a mouse model of Alzheimer's disease. Alzheimers Dement 2022. [DOI: 10.1002/alz.066024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Miguel Moutinho
- Stark Neurosciences Research Institute, Indiana University School of Medicine Indianapolis IN USA
| | - Peter Bor‐Chian Lin
- Stark Neurosciences Research Institute, Indiana University School of Medicine Indianapolis IN USA
| | - Vaishnavi Jadhav
- Stark Neurosciences Research Institute, Indiana University School of Medicine Indianapolis IN USA
| | | | - Ananya Balaji
- Indiana University‐School of Medicine Indianapolis IN USA
| | | | - Guixiang Xu
- Indiana University, Stark Neurosciences Research Institute Indianapolis IN USA
| | - Adrian L Oblak
- Stark Neurosciences Research Institute, Indiana University School of Medicine Indianapolis IN USA
| | | | - Gary E Landreth
- Stark Neurosciences Research Institute, Indiana University School of Medicine Indianapolis IN USA
| | - Bruce T Lamb
- Indiana University School of Medicine Indianapolis IN USA
| |
Collapse
|
26
|
Liu J, Xiang Y, Tang D, Xu G. Gastrointestinal: A case of type 1 gastric neuroendocrine tumor with multiple endocrine neoplasia type 1. J Gastroenterol Hepatol 2022. [PMID: 36343942 DOI: 10.1111/jgh.16026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/13/2022] [Accepted: 09/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- J Liu
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Y Xiang
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - D Tang
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - G Xu
- Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| |
Collapse
|
27
|
Katsumoto A, Kokiko-Cochran ON, Bemiller SM, Xu G, Ransohoff RM, Lamb BT. Triggering receptor expressed on myeloid cells 2 deficiency exacerbates injury-induced inflammation in a mouse model of tauopathy. Front Immunol 2022; 13:978423. [PMID: 36389767 PMCID: PMC9664165 DOI: 10.3389/fimmu.2022.978423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 10/14/2022] [Indexed: 01/24/2023] Open
Abstract
Traumatic brain injury (TBI) promotes several Alzheimer's disease-like pathological features, including microtubule-associated protein tau (MAPT) accumulation within neurons. Macrophage activation in the injured hTau mouse model of tauopathy raises the question whether there is a relationship between MAPT pathology and alterations in macrophage activation following TBI. Triggering receptor expressed on myeloid cells 2 (TREM2) is a critical regulator of microglia and macrophage phenotype, but its mechanisms on TBI remain unclear. To address the association with TREM2 in TBI and MAPT pathology, we studied TREM2 deficiency in hTau mice (hTau;Trem2-/- ) 3 (acute phase) and 120 (chronic phase) days after experimental TBI. At three days following injury, hTau;Trem2-/- mice exhibited reduced macrophage activation both in the cortex and hippocampus. However, to our surprise, hTau;Trem2-/- mice exposed to TBI augments macrophage accumulation in the corpus callosum and white matter near the site of tissue damage in a chronic phase, which results in exacerbated axonal injury, tau aggregation, and impaired neurogenesis. We further demonstrate that TREM2 deficiency in hTau injured mice promotes neuronal dystrophy in the white matter due to impaired phagocytosis of apoptotic cells. Remarkably, hTau;Trem2-/- exposed to TBI failed to restore blood-brain barrier integrity. These findings imply that TREM2 deficiency accelerates inflammation and neurodegeneration, accompanied by attenuated microglial phagocytosis and continuous blood-brain barrier (BBB) leakage, thus exacerbating tauopathy in hTau TBI mice.
Collapse
Affiliation(s)
- Atsuko Katsumoto
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Olga N. Kokiko-Cochran
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Department of Neurosciences, College of Medicine, The Ohio State University, Columbus, OH, United States
| | - Shane M. Bemiller
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Guixiang Xu
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Richard M. Ransohoff
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Neuroinflammation Research Center, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States
| | - Bruce T. Lamb
- Department of Neurosciences, The Cleveland Clinic Lerner Research Institute, Cleveland, OH, United States,Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, United States,*Correspondence: Bruce T. Lamb,
| |
Collapse
|
28
|
Liu Q, Qu Y, Wang K, Wu R, Zhang Y, Huang X, Chen X, Wang J, Zhang S, Zhang J, Xiao J, Yi J, Xu G, Luo J. Lymph Node Metastasis Spread Patterns and the Effectiveness of Prophylactic Neck Irradiation in Sinonasal Squamous Cell Carcinoma (SNSCC). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
29
|
Kang X, Ma R, Li X, Chen Y, Chen H, Liang Z, Zhou H, Xu G, Dong C, Lin J. 10P Detection of early-stage lung cancer using 5-hydroxymethylcytosine signatures in circulating cell-free DNA. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
30
|
Zhang P, Zhang Q, Hu X, Li W, Tong Z, Sun T, Teng Y, Wu X, Ouyang Q, Yan X, Cheng J, Liu Q, Feng J, Wang X, Xu G, Wu F, Xia B, Xu B. 229P Dalpiciclib plus fulvestrant in HR+/HER2− advanced breast cancer (ABC): Updated analysis from the phase III DAWNA-1 trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
31
|
Chen G, Xu Q, Fessing M, Mardaryev A, Sharov A, Xu G, Botchkarev V. 723 DNA dioxygenases Tet2/3 regulate gene promoter accessibility and three-dimensional chromatin topology in lineage-specific loci to control hair growth. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
Huang Y, Yang Y, Zhao Y, Guo D, Chen L, Shi L, Xu G. DOCK4 regulates ghrelin production in gastric X/A-like cells. J Endocrinol Invest 2022; 45:1447-1454. [PMID: 35302184 DOI: 10.1007/s40618-022-01785-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/08/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Ghrelin, a gastric hormone, provides a hunger signal to the central nervous system to stimulate food intake. Ghrelin also modulates neuroinflammatory and apoptotic processes. Dedicator of cytokinesis 4 (DOCK4), a guanine nucleotide exchange factor (GEF), is involved in the regulation of neuronal polarization and axon regeneration. However, the effect of DOCK4 on ghrelin production has not been explored. METHODS The expression of DOCK4 in human and mouse stomach was examined by immunohistochemical staining. The synthesis and secretion of ghrelin in Dock4 null mice were evaluated by real-time quantitative PCR, Western blot and ELISA. The effects of DOCK4 on ghrelin production in mHypoE-42 cells were measured by real-time quantitative PCR and Western blot. RESULTS We showed that DOCK4 was expressed in both human and mouse gastric ghrelin cells. The mRNA and protein levels of gastric ghrelin, as well as ghrelin secretion, were remarkably diminished in Dock4 null mice. Furthermore, we showed that overexpression of Dock4 significantly stimulated ghrelin expression, while siRNA knockdown of endogenous Dock4 resulted in a marked decrease of ghrelin in mHypoE-N42 cells. CONCLUSIONS Our results identify DOCK4 as a critical regulator for ghrelin production in gastric X/A-like cells.
Collapse
Affiliation(s)
- Y Huang
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - Y Yang
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China
| | - Y Zhao
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - D Guo
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China
- The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
| | - L Chen
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - L Shi
- JNU-HKUST Joint Laboratory for Neuroscience and Innovative Drug Research, College of Pharmacy, Jinan University, Guangzhou, Guangdong, China.
| | - G Xu
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China.
| |
Collapse
|
33
|
Puntambekar SS, Moutinho M, Lin PBC, Jadhav V, Tumbleson-Brink D, Balaji A, Benito MA, Xu G, Oblak A, Lasagna-Reeves CA, Landreth GE, Lamb BT. CX3CR1 deficiency aggravates amyloid driven neuronal pathology and cognitive decline in Alzheimer's disease. Mol Neurodegener 2022; 17:47. [PMID: 35764973 PMCID: PMC9241248 DOI: 10.1186/s13024-022-00545-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 05/24/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Despite its identification as a key checkpoint regulator of microglial activation in Alzheimer's disease, the overarching role of CX3CR1 signaling in modulating mechanisms of Aβ driven neurodegeneration, including accumulation of hyperphosphorylated tau is not well understood. METHODOLOGY Accumulation of soluble and insoluble Aβ species, microglial activation, synaptic dysregulation, and neurodegeneration is investigated in 4- and 6-month old 5xFAD;Cx3cr1+/+ and 5xFAD;Cx3cr1-/- mice using immunohistochemistry, western blotting, transcriptomic and quantitative real time PCR analyses of purified microglia. Flow cytometry based, in-vivo Aβ uptake assays are used for characterization of the effects of CX3CR1-signaling on microglial phagocytosis and lysosomal acidification as indicators of clearance of methoxy-X-04+ fibrillar Aβ. Lastly, we use Y-maze testing to analyze the effects of Cx3cr1 deficiency on working memory. RESULTS Disease progression in 5xFAD;Cx3cr1-/- mice is characterized by increased deposition of filamentous plaques that display defective microglial plaque engagement. Microglial Aβ phagocytosis and lysosomal acidification in 5xFAD;Cx3cr1-/- mice is impaired in-vivo. Interestingly, Cx3cr1 deficiency results in heighted accumulation of neurotoxic, oligomeric Aβ, along with severe neuritic dystrophy, preferential loss of post-synaptic densities, exacerbated tau pathology, neuronal loss and cognitive impairment. Transcriptomic analyses using cortical RNA, coupled with qRT-PCR using purified microglia from 6 month-old mice indicate dysregulated TGFβ-signaling and heightened ROS metabolism in 5xFAD;Cx3cr1-/- mice. Lastly, microglia in 6 month-old 5xFAD;Cx3cr1-/- mice express a 'degenerative' phenotype characterized by increased levels of Ccl2, Ccl5, Il-1β, Pten and Cybb along with reduced Tnf, Il-6 and Tgfβ1 mRNA. CONCLUSIONS Cx3cr1 deficiency impairs microglial uptake and degradation of fibrillar Aβ, thereby triggering increased accumulation of neurotoxic Aβ species. Furthermore, loss of Cx3cr1 results in microglial dysfunction typified by dampened TGFβ-signaling, increased oxidative stress responses and dysregulated pro-inflammatory activation. Our results indicate that Aβ-driven microglial dysfunction in Cx3cr1-/- mice aggravates tau hyperphosphorylation, neurodegeneration, synaptic dysregulation and impairs working memory.
Collapse
Affiliation(s)
- Shweta S. Puntambekar
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Miguel Moutinho
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Anatomy, Cell Biology and Physiology, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Peter Bor-Chian Lin
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Indiana Biomedical Gateway (IBMG) Program, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Vaishnavi Jadhav
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medicine, Division of Gerontology and Geriatric Medicine, University of Washington, Seattle, WA USA
| | - Danika Tumbleson-Brink
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Ananya Balaji
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Indiana Clinical and Translational Institute (CTSI), Summer Research Program (SRP), Indianapolis, IN USA
| | - Martin Alvarado Benito
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Guixiang Xu
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Adrian Oblak
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Radiology, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Cristian A. Lasagna-Reeves
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Anatomy, Cell Biology and Physiology, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Gary E. Landreth
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Anatomy, Cell Biology and Physiology, Indiana University-School of Medicine, Indianapolis, IN USA
| | - Bruce T. Lamb
- Stark Neurosciences Research Institute, Indiana University-School of Medicine, Indianapolis, IN USA
- Department of Medical and Molecular Genetics, Indiana University-School of Medicine, Indianapolis, IN USA
| |
Collapse
|
34
|
Yang X, Sun Y, Xu G. Abstract No. 176 Single-center phase-II study of TACE combined with sorafenib plus immune checkpoint inhibitors as first-line treatment in patients with BCLC B/C hepatocellular carcinoma. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
|
35
|
Zhang R, Wu T, Zheng P, Liu M, Xu G, Xi M, Yu J. Retraction notice to "Thymoquinone sensitizes human hepatocarcinoma cells to TRAIL-induced apoptosis via oxidative DNA damage" [DNA Repair 103C (2021) 103117]. DNA Repair (Amst) 2022; 115:103340. [PMID: 35597193 DOI: 10.1016/j.dnarep.2022.103340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Ruikui Zhang
- Department of Special Emergency Surgery, Special Medical Center of Chinese People 's Armed Police Forces, Tianjin 300162, China
| | - Tao Wu
- Department of Infectious Disease, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Peipei Zheng
- Department of General Surgery, The First Hospital Affiliated of Shandong First Medical University (Qianfoshan Hospital), Jinan, Shandong 250014, China
| | - Ming Liu
- Department of Infectious Disease, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Guixiang Xu
- Department of General Surgery, Qingdao Fuwai Hospital, Qingdao, Shandong 266034, China
| | - Ming Xi
- Department of Urology, Huadu District People's Hospital, Southern Medical University, Guangzhou, Guangdong 510800, China
| | - Jian Yu
- Department of General Surgery, The First Hospital Affiliated of Shandong First Medical University (Qianfoshan Hospital), Jinan, Shandong 250014, China
| |
Collapse
|
36
|
Bei J, Xu G, Chang J, Wang X, Qiu D, Ruan J, Li X, Gao S. [SARS-CoV-2 with transcription regulatory sequence motif mutation poses a greater threat]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:399-404. [PMID: 35426804 DOI: 10.12122/j.issn.1673-4254.2022.03.12] [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] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To analyze the mutations in transcription regulatory sequences (TRSs) of coronaviruss (CoV) to provide the basis for exploring the patterns of SARS-CoV-2 transmission and outbreak. METHODS A combined evolutionary and molecular functional analysis of all sets of publicly available genomic data of viruses was performed. RESULTS A leader transcription regulatory sequence (TRS-L) usually comprises the first 60-70 nts of the 5' UTR in a CoV genome, and the body transcription regulatory sequences (TRS-Bs) are located immediately upstream of the genes other than ORF1a and 1b. In each CoV genome, the TRS-L and TRS-Bs share a specific consensus sequence, namely the TRS motif. Any changes of nucleotide residues in the TRS motifs are defined as TRS motif mutations. Mutations in the TRS-L or multiple TRS-Bs result in superattenuated variants. The spread of super-attenuated variants may cause an increase in asymptomatic or mild infections, prolonged incubation periods and a decreased detection rate of the viruses, thus posing new challenges to SARS-CoV-2 prevention and control. The super-attenuated variants also increase their possibility of long-term coexistence with humans. The Delta variant is significantly different from all the previous variants and may lead to a large-scale transmission. The Delta variant (B.1.617.2) with TRS motif mutation has already appeared and shown signs of spreading in Singapore, which, and even the Southeast Asia, may become the new epicenter of the next wave of SARS-CoV-2 outbreak. CONCLUSION TRS motif mutation will occur in all variants of SARS-CoV-2 and may result in super-attenuated variants. Only super-attenuated variants with TRS motif mutations will eventually lose the abilities of cross-species transmission and causing outbreaks.
Collapse
Affiliation(s)
- J Bei
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510275, China
| | - G Xu
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - J Chang
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - X Wang
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - D Qiu
- John Van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom
| | - J Ruan
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - X Li
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - S Gao
- College of Life Sciences, Nankai University, Tianjin 300071, China
| |
Collapse
|
37
|
Shi JB, Sun YQ, Xu G. [Endotype-based surgical treatment of chronic rhinosinusitis]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:130-135. [PMID: 35196755 DOI: 10.3760/cma.j.cn115330-20210819-00561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- J B Shi
- Otorhinolaryngology Hospital, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Y Q Sun
- Department of Otorhinolaryngology, the Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China
| | - G Xu
- Otorhinolaryngology Hospital, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China Department of Otorhinolaryngology, Xiamen Humanity Hospital, Xiamen 361015, China
| |
Collapse
|
38
|
WEI H, Liu Y, Xu G. POS-455 CD137L-MACROPHAGE INDUCE LYMPHATIC ENDOTHELIAL CELLS AUTOPHAGY TO PROMOTE LYMPHANGIOGENESIS IN RENAL FIBROSIS. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
39
|
Huang D, Zhang Z, Dong Z, Liu R, Huang J, Xu G. Caloric restriction and Roux-en-Y Gastric Bypass promote white adipose tissue browning in mice. J Endocrinol Invest 2022; 45:139-148. [PMID: 34232475 DOI: 10.1007/s40618-021-01626-0] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/24/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE Caloric restriction (CR) and Roux-en-Y Gastric Bypass (RYGB) are considered effective means of body weight control, but the mechanism by which CR and RYGB protect against high-fat diet (HFD)-induced obesity remains elusive. The browning of white adipose tissue (WAT) is a potential approach to combat obesity. Here we assess whether browning of WAT is involved in CR- and RYGB-treatment. METHODS The average size of adipocytes was determined by histological analysis. Expression of thermogenic genes in both human subjects and mice were measured by quantitative real-time PCR and immunohistochemical staining. RESULTS The average size of adipocytes was bigger, while the expression of thermogenic genes such as uncoupling protein 1 (UCP1), nuclear factor erythroid-2 like 1 (NRF1) and PPARγ coactivator-1 α (PGC1α) were lower in the WAT of obese subjects when compared to lean controls. Both CR and RYGB promoted weight and fat loss. Increment of the average adipocytes size and down-regulation of thermogenic genes were significantly reversed by both CR and RYGB in the WAT of obese mice. CONCLUSIONS Our findings showed that CR and RYGB significantly improved high-fat diet-induced lipid accumulation by promoting the browning of WAT.
Collapse
Affiliation(s)
- D Huang
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - Z Zhang
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - Z Dong
- Department of Obesity and Metabolic Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - R Liu
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - J Huang
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China
| | - G Xu
- Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Tianhe District, Guangzhou, 510632, Guangdong, China.
| |
Collapse
|
40
|
Gao Y, Gao X, Cai J, Han F, Xu G, Zhang X, Zhang T, Yu L. Prediction of placenta accreta spectrum by a scoring system based on maternal characteristics combined with ultrasonographic features. Taiwan J Obstet Gynecol 2021; 60:1011-1017. [PMID: 34794730 DOI: 10.1016/j.tjog.2021.09.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE In order to create a comprehensive scoring system based on maternal characteristics and ultrasonographic features for predicting placenta accreta spectrum (PAS). MATERIALS AND METHODS This was a retrospective review of pregnant women who underwent routine ultrasound examination in the third trimester of pregnancy from January 2014 to November 2018 were used as a training set to establish the scoring system for PAS prediction while those who underwent examination from January 2019 to December 2019 served as a validation set.. Maternal characteristics including maternal age, parity, previous vaginal deliveries, previous curettage, previous cesarean section (CS), history of hypertension and diabetes mellitus, prenatal body mass index (BMI) were recorded. Ultrasonographic features including abnormal placental lacunae, subplacental hypervascularity, myometrial thinning, placental bulge, bladder wall interruption, location of placenta, placenta previa (yes or not) were recorded. Multivariate analysis was applied to analyze independent risk factors and assess the predictive power of selected parameters predicting PAS. Receiver operating characteristics (ROC) curve was used to evaluate the diagnosis power. RESULTS Parity, previous curettage and CS were independent risk factors. The best comprehensive scoring system was established as follow: the number of abnormal lacunae ≥3, 2 points; lacuna maximum dimension ≥2 cm, 5 points; subplacental hypervascularity (rich), 1 point; subplacental hypervascularity (extremely rich and disordered), 3 points; bladder wall interruption, 9 points; placental bulge, 9 points; placenta previa, 8 points; anterior placenta, 1 point; previous CS ≥ 1, 1 point; parity ≥ 4, 3 point; previous abortions ≥ 2, 1 point. The area under the ROC curve of the scoring system diagnosing PAS was 0.925. Sensitivity and specificity were 83.3% and 85.7%, respectively. Cross-validation for our model showed that sensitivity, specificity, positive predictive value and negative predictive value of the model in diagnosis of PAS were 82.6%, 81.8%, 82.6% and 81.8%, respectively. Diagnosis of 37 cases were consistent with the "gold standard", and the coincidence rate was 82.2% (37/45). CONCLUSION The comprehensive scoring system established in this study can effectively diagnose PAS.
Collapse
Affiliation(s)
- Yisu Gao
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Xuejiao Gao
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Jing Cai
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Fang Han
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Guixiang Xu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Xuan Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Ting Zhang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| | - Lili Yu
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, PR China.
| |
Collapse
|
41
|
Luo X, Yi J, Wu R, Huang X, Qu Y, Chen X, Zhang Y, Liu Q, Wang J, Zhang J, Luo J, Gao L, Xu G. Response-Adapted Strategy Based on Early Response to Radiotherapy Achieves Favorable Survival With Functional Larynx in Resectable, Locally Advanced Hypopharyngeal Cancer: An Analysis of 423 Real-World Cases. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1080] [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: 10/20/2022]
|
42
|
Luo X, Yi J, Wang J, Wu R, Huang X, Zhang Y, Wang K, Qu Y, Chen X, Zhang J, Luo J, GAO L, Xu G. Hypopharyngeal Carcinoma With Synchronous and Metachronous Multiple Malignancies: Clinical Characteristics and Prognosis Analysis of 673 Real World Cases. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Xu G, Dresser K, Bledsoe J. Immunohistochemical Characterization of H3K4Me3 in Reactive Lymph Nodes and Follicular Lymphoma. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
Genes involved in histone methylation are frequently mutated in non-Hodgkin’s lymphomas. For instance, frequent mutations in genes encoding histone methytransferases MML2 and EZH2 are present in diffuse large B cell lymphoma (DLBCL) and follicular lymphoma (FL). The aim of this study was to characterize the immunohistochemical expression of H3K4Me3 in benign/reactive lymph nodes (LNs) with comparison to follicular lymphoma (FL).
Methods/Case Report
Immunohistochemical staining with an anti-H3K4Me3 antibody was performed on FFPE whole slide section from patients with benign/reactive LNs (n=21), low grade (grade 1-2) FL (n=21). H3K4Me3 reactivity was scored for staining intensity and percentage of lymphocytes showing reactivity.
Results (if a Case Study enter NA)
The majority of the reactive LN sections (15 out of 21 cases) showed a distinct distribution of H3K4Me3 staining, with the majority of cells in the mantle zone and the interfollicular zones showing moderate-strong staining, whereas reactive germinal centers (GCs) showed significantly decreased or close to negative staining. Neoplastic follicles in all the FL cases contained positive cells with significantly stronger staining compared to that in the germinal centers in benign lymph nodes. The interfollicular zones, while diminished in FL due to expanded neoplastic follicles, showed retained H3K4Me3 staining. The difference in staining intensity between follicles and mantle/interfollicular zones became indistinct in FL.
Conclusion
H3K4Me3 expression in benign/reactive LNs is characterized by positive expression in lymphocytes in interfollicular and mantle zones and significantly decreased in GCs. However, the expression pattern is different in FL, which showed significantly increased expression in the follicles compared to that in reactive GCs. In FL, the expression in GCs is similar to that in the interfollicular and mantle zone lymphocytes. It is reported that about 90% of FL have MLL2 mutation and MLL2 is the enzyme responsible for the methylation of H3K4. So far, it is unclear whether the mutation of MLL2 in FL affects the overall methylation activity of the enzyme. In our study, there is increased methylation of H3K4 in the follicles of FL, which raises the possibility that MLL2 mutation somehow increases H3K4 methylation.
Collapse
Affiliation(s)
- G Xu
- Pathology, University of Massachusetts, Worcester, Massachusetts, UNITED STATES
| | - K Dresser
- Pathology, University of Massachusetts, Worcester, Massachusetts, UNITED STATES
| | - J Bledsoe
- Pathology, Boston Children’s Hospital, Boston, Massachusetts, UNITED STATES
| |
Collapse
|
44
|
Yang J, Xu G, Zheng J, Wang Y, Wang S, Li G, Duan W, Zhang H, Huang D. 479P Difference gene mutations among CRC patients with MSS and MSI-H types in China. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
45
|
Song Y, Xu G, Zhu Y, Wang T, Liu J, Wang W, Ma T, Zhang B. 1745P Prediction of BSRTC class of repeated FNA based on molecular testing result upon the first FNA. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
46
|
Zou H, Cui Y, Wang X, Zhang Z, Yang J, Xu G, Okutani A, Hagiwara M, Matsuda M, Wang G, Mussardo G, Hódsági K, Kormos M, He Z, Kimura S, Yu R, Yu W, Ma J, Wu J. E_{8} Spectra of Quasi-One-Dimensional Antiferromagnet BaCo_{2}V_{2}O_{8} under Transverse Field. Phys Rev Lett 2021; 127:077201. [PMID: 34459637 DOI: 10.1103/physrevlett.127.077201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/08/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
We report ^{51}V NMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnet BaCo_{2}V_{2}O_{8} under transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the Néel temperatures unveils a 1D quantum critical point (QCP) at H_{c}^{1D}≈4.7 T, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum at H_{c}^{1D} is precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptional E_{8} Lie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massive E_{8} phase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.
Collapse
Affiliation(s)
- Haiyuan Zou
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yi Cui
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Xiao Wang
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Z Zhang
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - J Yang
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
| | - G Xu
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, USA
| | - A Okutani
- Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Hagiwara
- Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Matsuda
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - G Wang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Giuseppe Mussardo
- SISSA and INFN, Sezione di Trieste, Via Bonomea 265, I-34136 Trieste, Italy
| | - K Hódsági
- BME-MTA Statistical Field Theory Research Group, Institute of Physics, Budapest University of Technology and Economics, 1111 Budapest, Budafoki út 8, Hungary
| | - M Kormos
- MTA-BME Quantum Dynamics and Correlations Research Group, Department of Theoretical Physics, Budapest University of Technology and Economics, 1111 Budapest, Budafoki út 8, Hungary
| | - Zhangzhen He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - S Kimura
- Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Rong Yu
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Weiqiang Yu
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Jie Ma
- Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jianda Wu
- Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
47
|
Wu P, Tian Y, Chen G, Wang B, Gui L, Xi L, Ma X, Fang Y, Zhu T, Wang D, Meng L, Xu G, Wang S, Ma D, Zhou J. Correction: Ubiquitin B: an essential mediator of trichostatin A-induced tumor-selective killing in human cancer cells. Cell Death Differ 2021; 29:1299. [PMID: 34331026 DOI: 10.1038/s41418-021-00829-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- P Wu
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Y Tian
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - G Chen
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - B Wang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - L Gui
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - L Xi
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - X Ma
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - Y Fang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - T Zhu
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - D Wang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - L Meng
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - G Xu
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - S Wang
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China
| | - D Ma
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
| | - J Zhou
- Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People's Republic of China.
| |
Collapse
|
48
|
Xu G, Jiao D, Chen L, Zhang L, Dong R, Liu T, Wang J. Vibration modes of a transportable optical cavity. Opt Express 2021; 29:24264-24277. [PMID: 34614675 DOI: 10.1364/oe.422182] [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: 03/31/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Many factors still need to be evaluated to fully understand the physical mechanisms determining optical cavity vibration, which are crucial for designing and constructing a transportable ultra-stable laser. Herein, a detailed dynamic analysis is used to characterize the vibration modes of a transportable optical cavity. The first five resonance modes are identified in the presence of a cavity support, and the guidelines to achieve a high first-order resonance frequency are proposed; thereby, high robustness is described using a 50 mm length optical cavity. The results demonstrate that the first-order resonance of up to 681 Hz with a gross weight of 2.51 kg can be achieved using an optimization strategy for given cavity support. The theoretical results are consistent with simulation and experiment. With the optimal group, a 1.34 Hz linewidth transportable ultra-stable laser at 1550 nm is established, and a linewidth of 1.5 Hz and frequency instability of 9.5×10-15@1s are obtained after the test including 100 km actual road transportation and 34 min continuous vibration. The test condition is equivalent to ∼ 1000 km road transportation. Our method can be readily extended to other transportable optical cavities, providing a powerful tool for improving the robustness of vibration, particularly important for transportable environments.
Collapse
|
49
|
Wu ZB, Pan HG, Xu G, Chen GW, Li L. [Otological and hearing characteristics in children with Turner syndrome]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:590-595. [PMID: 34256483 DOI: 10.3760/cma.j.cn115330-20210305-00111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the otological and hearing characteristics in children with Turner syndrome (TS), to determine risk factors of hearing loss, and to discuss algorithms for future surveillance. Methods: The clinical data of otolaryngology in children with TS from January 2018 to April 2020 were reviewed retrospectively. A total of 46 female children with TS, aged from 5 to 18 years were enrolled. Karyotypes included 17 cases (37.0%) of monosomy, 16 cases (34.7%) of mosaicism, and 13 cases (28.3%) of abnormal X chromosome structures. The otoscopic characteristics, audiological performance, and otologic diagnoses were evaluated. Multivariate logistic regression and Mann-Whitney U test were used for statistical analysis. Results: The most common otologic comorbidity was otitis media with effusion (OME), including 20 cases (43.5%) with 33 ears (35.9%). 14 cases (30.4%) were diagnosed with hearing loss. The regression analysis revealed that the age (OR=1.345, 95%CI: 1.072-1.760) and comorbidity of OME (OR=9.460, 95%CI: 2.065-60.350) were risk factors associated with hearing loss. In TS with OME, when compared with the mean air conduction threshold, the hearing loss of the group with pars flaccida retractions was significantly higher ((24.3±13.8) dB HL vs. (14.4±4.2) dB HL, U=59.500, P=0.008) than that of the group with none retractions. Conclusion: OME and hearing loss are common in children with TS. As age increases or suffers from OME, the risk of hearing loss increases.
Collapse
Affiliation(s)
- Z B Wu
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - H G Pan
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - G Xu
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - G W Chen
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - L Li
- Department of Otorhinolaryngology, Shenzhen Children's Hospital, Shenzhen 518038, China
| |
Collapse
|
50
|
Chen G, Xu Q, Fessing M, Mardaryev A, Sharov A, Xu G, Botchkarev V. 604 DNA dioxygenases TET regulate keratin gene expression and enhancer networks within lineage-specific gene loci during epidermal and hair follicle-specific keratinocyte differentiation. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.632] [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: 10/21/2022]
|