1
|
Liu Y, Han X, Han Y, Bi J, Wu Y, Xiang D, Zhang Y, Bi W, Xu M, Li J. Integrated transcriptomic analysis systematically reveals the heterogeneity and molecular characterization of cancer-associated fibroblasts in osteosarcoma. Gene 2024; 907:148286. [PMID: 38367852 DOI: 10.1016/j.gene.2024.148286] [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: 11/15/2023] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 02/19/2024]
Abstract
BACKGROUND Osteosarcoma (OS), with a peak incidence during the adolescent growth spurt, is correlated with poor prognosis for its high malignancy. The tumor microenvironment (TME) is highly complicated, with frequent interactions between tumor and stromal cells. The cancer-associated fibroblasts (CAFs) in the TME have been considered to actively involve in the progression, metastasis, and drug resistance of OS. This study aimed to characterize cellular heterogeneity and molecular characterization in CAFs subtypes and explore the potential targeting therapeutic strategies to improve the prognosis of OS patients. METHODS The single-cell atlas of human OS tumor lesions were constructed from the GEO database. Then significant marker genes and potential biological functions for each CAFs subtype were identified and explored using the Seurat R package. Next, by performing the survival analyses and constructing the risk scores for CAFs subtypes, we aimed to identify and characterize the prognostic values of specific marker genes and different CAFs subtypes. Furthermore, we explored the therapeutic targets and innovative drugs targeting different CAFs subtypes based on the GDSC database. Finally, prognoses related CAFs subtypes were further validated through immunohistochemistry (IHC) on clinical OS specimens. RESULTS Overall, nine main cell clusters and five subtypes of CAFs were identified. The differentially expressed marker genes for each CAFs clusters were then identified. Moreover, through Gene Ontology (GO) enrichment analysis, we defined the CAFs_2 (upregulated CXCL14 and C3), which was closely related to leukocyte migration and chemotaxis, as inflammatory CAFs (iCAFs). Likewise, we defined the CAFs_4 (upregulated CD74, HLA-DRA and HLA-DRB1), which was closely related to antigen process and presentation, as antigen-presenting CAFs (apCAFs). Furthermore, Kaplan-Meier analyses showed that CAFs_2 and CAFs_4 were correlated with poor clinical prognosis of OS patients. Meanwhile, therapeutic drugs targeting CAFs_2 and CAFs_4, such as 17-AAG/Docetaxel/Bleomycin and PHA-793887/NG-25/KIN001-102, were also explored, respectively. Finally, IHC assay confirmed the abundant CAFs_2 and CAFs_4 subtypes infiltration in the OS microenvironment compared with adjacent tissues. CONCLUSION Our study revealed the diversity, complexity, and heterogeneity of CAFs in OS, and complemented the single-cell atlas in OS TME.
Collapse
Affiliation(s)
- Yuyang Liu
- Department of Neurosurgery, 920th Hospital of Joint Logistics Support Force, Kunming 650032, Yunnan, China; Chinese PLA Spinal Cord Injury Treatment Center, Kunming, Yunnan 650032, China
| | - Xinli Han
- School of Medicine, Nankai University, Tianjin 300074, China
| | - Yuchen Han
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Jingyou Bi
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Yanan Wu
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Dongquan Xiang
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Yinglong Zhang
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Wenzhi Bi
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China; School of Medicine, Nankai University, Tianjin 300074, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Meng Xu
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China; Medical School of Chinese PLA, Beijing 100853, China.
| | - Jianxiong Li
- Senior Department of Orthopedics, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China.
| |
Collapse
|
2
|
Wei SC, Liu C, Chen M, Cai YH, Wu XH, Chen ML, Zhang JX, Xiang D, Liu ZC, Jiang CQ, Shi J, Wu KC, Dong WG. [Effects of biologics on psychological status and quality of life in patients with inflammatory bowel disease: a multicenter study]. Zhonghua Nei Ke Za Zhi 2023; 62:1000-1006. [PMID: 37528039 DOI: 10.3760/cma.j.cn112138-20220818-00603] [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: 08/03/2023]
Abstract
Objective: To investigate the effects of biologics on psychological status and quality of life in patients with inflammatory bowel disease (IBD). Methods: A cross-sectional survey was conducted in 42 hospitals in 22 provinces (autonomous regions and municipalities directly under the central government) from September 2021 to May 2022. General clinical information and the use of biologics were obtained from adult patients diagnosed with IBD who voluntarily participated in the study. Psychological status was evaluated using the Generalized Anxiety Disorder (GAD-7), Patient Health Questionnaire-9 (PHQ-9), Pittsburgh Sleep Quality Index (PSQI), and Inflammatory Bowel Disease Questionnaire (IBDQ) assessment tools. Counts were analyzed via the Chi-square test, and datasets that were not normally distributed were analyzed via nonparametric tests. P<0.05 was considered statistically significant. Results: A total of 2 478 valid questionnaires were collected. The GAD-7 score of the biologics group was significantly lower than that of the non-use group [6 (2, 9) vs. 7 (3, 10), Z=-3.49, P<0.001]. IBDQ scores [183 (158, 204) vs. 178 (152, 198), Z=-4.11, P<0.001], intestinal symptom scores [61 (52, 67) vs. 58 (49, 65), Z=-5.41, P<0.001], systemic symptom scores [28 (24, 32) vs. 27 (23, 31), Z=-2.37, P=0.018], emotional ability scores [69 (58, 77) vs. 67 (56, 75), Z=-3.58, P<0.001] and social ability scores [26 (22, 29) vs. 25 (22, 29), Z=-2.52, P=0.012] in the biologics group were significantly higher than in the non-use group. GAD-7 scores [5 (2, 9) vs. 6 (3, 10), Z=-3.50, P<0.001] and PSQI scores [6 (4, 9) vs. 6 (4, 9), Z=-2.55, P=0.011] were significantly lower in the group using infliximab than in the group not using it. IBDQ scores were significantly higher in patients using vedolizumab than in those not using it [186 (159, 205) vs. 181 (155, 201), Z=-2.32, P=0.021] and were also significantly higher in the group treated with adalimumab than in the group not treated with adalimumab [187 (159, 209) vs. 181 (155, 201), Z=-2.16, P=0.030]. However, ustekinumab had no significant effect on any of the scores. Conclusion: The use of biologics is strongly associated with improvements in anxiety status and quality of life in IBD patients.
Collapse
Affiliation(s)
- S C Wei
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China Department of Gastroenterology, the First Affiliated Hospital of Nanjing Medical University (Jiangsu Province Hospital), Nanjing 210029, China
| | - C Liu
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China
| | - M Chen
- Department of Gastroenterology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y H Cai
- Department of Psychiatry, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - X H Wu
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China
| | - M L Chen
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China
| | - J X Zhang
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China
| | - D Xiang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Z C Liu
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - C Q Jiang
- Department of Clinical Psychology, Beijing Anding Hospital, Capital Medical University, Beijing l00088, China
| | - J Shi
- Department of Medical Psychology, Chinese People's Liberation Army Rocket Army Characteristic Medical Center, Beijing l00088, China
| | - K C Wu
- Department of Gastroenterology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - W G Dong
- Department of Gastroenterology,Renmin Hospital of Wuhan University,Wuhan 430060,China
| |
Collapse
|
3
|
Xiang D, Han X, Li J, Zhang J, Xiao H, Li T, Zhao X, Xiong H, Xu M, Bi W. Combination of IDO inhibitors and platinum(IV) prodrugs reverses low immune responses to enhance cancer chemotherapy and immunotherapy for osteosarcoma. Mater Today Bio 2023; 20:100675. [PMID: 37304579 PMCID: PMC10250924 DOI: 10.1016/j.mtbio.2023.100675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/06/2023] [Accepted: 05/18/2023] [Indexed: 06/13/2023] Open
Abstract
In recent years, immune checkpoint blockades (ICBs) have made great progress in the treatment of cancer. However, most ICBs have not yet been observed to be satisfactory in the treatment of osteosarcoma. Herein, we designed composite nanoparticles (NP-Pt-IDOi) from a reactive oxygen species (ROS) sensitive amphiphilic polymer (PHPM) with thiol-ketal bonds in the main chain to encapsulate a Pt(IV) prodrug (Pt(IV)-C12) and an indoleamine-(2/3)-dioxygenase (IDO) inhibitor (IDOi, NLG919). Once NP-Pt-IDOi enter the cancer cells, the polymeric nanoparticles could dissociate due to the intracellular ROS, and release Pt(IV)-C12 and NLG919. Pt(IV)-C12 induces DNA damage and activates the cGAS-STING pathway, increasing infiltration of CD8+ T cells in the tumor microenvironment. In addition, NLG919 inhibits tryptophan metabolism and enhances CD8+ T cell activity, ultimately activating anti-tumor immunity and enhancing the anti-tumor effects of platinum-based drugs. NP-Pt-IDOi were shown to have superior anti-cancer activity in vitro and in vivo in mouse models of osteosarcoma, providing a new clinical paradigm for combining chemotherapy with immunotherapy for osteosarcoma.
Collapse
Affiliation(s)
- Dongquan Xiang
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Xinli Han
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
- School of Medicine, Nankai University, Tianjin, 300074, PR China
| | - Jianxiong Li
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Jiabing Zhang
- Xidian University, Xi'an, 710071, PR China
- Graduate School of Medical School of Chinese PLA Hospital, Beijing, 100853, PR China
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Ting Li
- Department of Cardiovascular Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Xuelin Zhao
- Medical School of Chinese PLA, Beijing, 100853, PR China
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
| | - Hejian Xiong
- Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX, 75080, USA
| | - Meng Xu
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
| | - Wenzhi Bi
- Senior Department of Orthopedics, The Fourth Medical Centre, Chinese PLA General Hospital, Beijing, 100048, PR China
| |
Collapse
|
4
|
Ni H, Xie S, Xiang D, Shia W, Chen G, Xiang B. A Novel Bimetal Cu–Fe Nano-Silica Catalyst Synthesis by Supercritical Method and Its High Catalytic Activity for Phenol Hydroxylation. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222120441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
|
5
|
Song J, Mavraganis I, Shen W, Yang H, Cram D, Xiang D, Patterson N, Zou J. Transcriptome dissection of candidate genes associated with lentil seed quality traits. Plant Biol (Stuttg) 2022; 24:815-826. [PMID: 35395134 DOI: 10.1111/plb.13426] [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] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Lentils provide a rich plant-based protein source and staple food in many parts of the world. Despite numerous nutritional benefits, lentil seeds also possess undesirable elements, such as anti-nutritional factors. Understanding the genetic networks of seed metabolism is of great importance for improving the seed nutritional profile. We applied RNA sequencing analysis to survey the transcriptome of developing lentil seeds and compared this with that of the pod shells and leaves. In total, we identified 2622 genes differentially expressed among the tissues examined. Genes preferentially expressed in seeds were enriched in the Gene Ontology (GO) terms associated with development, nitrogen and carbon (N/C) metabolism and lipid synthesis. We further categorized seed preferentially expressed genes based on their involvement in storage protein production, starch accumulation, lipid and suberin metabolism, phytate, saponin and phenylpropanoid biosynthesis. The availability of transcript profile datasets on lentil seed metabolism and a roadmap of candidate genes presented here will be of great value for breeding strategies towards further improvement of lentil seed quality traits.
Collapse
Affiliation(s)
- J Song
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - I Mavraganis
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - W Shen
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - H Yang
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - D Cram
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - D Xiang
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - N Patterson
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| | - J Zou
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, Saskatoon, Saskatchewan, Canada
| |
Collapse
|
6
|
Zhang Y, Xiang D, Alejok N. Coping with COVID-19 in United Nations peacekeeping field hospitals: increased workload and mental stress for military healthcare providers. BMJ Mil Health 2021; 167:229-233. [PMID: 33177148 PMCID: PMC7661351 DOI: 10.1136/bmjmilitary-2020-001642] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 11/26/2022]
Abstract
INTRODUCTION This study aimed to explore the impact of COVID-19 on the United Nations peacekeeping field hospitals where medical supply and manpower are extremely insufficient. METHODS A level II hospital was deployed in Wau, South Sudan, as the regional referral centre of the United Nations Mission in South Sudan (UNMISS). It had a total strength of 63 personnel with 47 medical staff (average age 38.3±8.0 years, 33 men). A new 'appointment-triage-disinfection' work pattern was adopted to cope with the COVID-19 outbreak in the mission. Data on medical service statistics and workload before/after the outbreak were collected and compared. The mental health of staff was analysed from the quarterly psychological survey, including Perceived Stress Scale (PSS)-10, Generalised Anxiety Disorder (GAD)-7 and Patient Health Questionnaire (PHQ)-9. RESULTS The number of outpatients decreased slightly after the COVID-19 outbreak (41.9±11.9 to 37.6±11.8 per week, p=0.49), whereas the weekly hospital length of stay of inpatients increased significantly (0.4±1.0 to 3.1±3.9 days, p=0.02). Total weekly working hours increased from 1884.9±34.1 to 2023.5±67.3 hours (p<0.001). Elevated mental stress (PSS-10: 4.3±2.4 in February to 7.5±3.9 in May, p<0.001; GAD-7: 4.0±2.3 to 9.4±4.0, p<0.001; PHQ-9: 2.1±1.2 to 3.2±2.4, p<0.001) was documented among healthcare providers after the outbreak. The threat of COVID-19 infection, delay in rotation and family-related concerns constituted the main stressors. CONCLUSION COVID-19 imposes a huge pressure on peacekeeping field hospitals. Increased workload and mental stress among frontline healthcare providers deserve the attention of UNMISS officials. Facilitating the rotation of the medical staff might potentially improve the operational readiness of the hospital by bringing in well-trained personnel and sufficient medical supplies.
Collapse
Affiliation(s)
- Yongxue Zhang
- Department of Surgery, Handan Medical Center, Bethune International Peace Hospital, Handan, China
- Chinese Level II Hospital, Wau Field Office, Sector West, United Nations Mission in South Sudan (UNMISS), Wau, South Sudan
| | - D Xiang
- Department of Neurology, Handan Medical Center, Bethune International Peace Hospital, Handan, China
| | - N Alejok
- Level I Clinic, Wau Field Office, United Nations Mission in South Sudan (UNMISS), Wau, South Sudan
| |
Collapse
|
7
|
Abstract
Background The outbreak of Corona Virus Disease-2019 (COVID-19) has posed unprecedented pressure and threats to healthcare workers in Wuhan and the entire country. Aims To assess the effect of the COVID-19 outbreak on the sleep quality of healthcare workers in a children’s healthcare centre in Wuhan. Methods A cross-sectional, anonymized, self-reported questionnaire survey was conducted at the Children’s Healthcare Centre of Renmin Hospital, Wuhan University, Wuhan, China. The questionnaire consisted of three parts, including socio-demographic characteristics and COVID-19 epidemic-related factors, the Pittsburgh sleep quality index (PSQI), and Zung’s self-rating anxiety scale (SAS) and self-rating depression scale (SDS). Results In total, 47 out of 123 (38%) participants with PSQI scores > 7 were identified as having sleep disturbance. A logistic regression analysis showed that sleep disturbance was independently associated with being an only child (adjusted odds ratio (OR) and 95% confidence interval (CI) 3.40 (1.21–9.57), P < 0.05), exposure to COVID-19 patients (adjusted OR and 95% CI 2.97 (1.08–8.18), P < 0.05) and depression (adjusted OR and 95% CI 2.83 (1.10–7.27), P < 0.05). Conclusions We observed that, during the outbreak of COVID-19, sleep disturbance was highly prevalent among paediatric healthcare workers, and sleep disturbance was independently associated with being an only child, exposure to COVID-19 patients and depression. Therefore, more mental health services are required for front-line paediatric healthcare workers in Wuhan.
Collapse
Affiliation(s)
- S Wang
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - L Xie
- Department of Neonatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Y Xu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - S Yu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - B Yao
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - D Xiang
- Department of Psychiatry, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| |
Collapse
|
8
|
Xiang D, Lin H. [Research progress in surface bonding pretreatment of dental zirconia ceramics]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:348-352. [PMID: 32392979 DOI: 10.3760/cma.j.cn112144-20191128-00426] [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: 11/05/2022]
Abstract
Yttria stabilized tetragonal zirconia polycrystal ceramics is widely used in the field of dentistry because of its excellent mechanical properties and biocompatibility. However, it has low hydroxyl content and does not contain silica. Therefore micro mechanical retention induced by hydrofluoric acid etching on its surface is not applicable. The bonding of zirconia is a difficult problem. Zirconia surface pretreatment is commonly used to improve bonding strength and durability. This review summarizes surface pretreatment of dental zirconia ceramic including air abrasion, laser etching, acid etching, silica coating, non-thermal plasmas treatment, et al. In addition, it presents advantages and disadvantages of each treatment, provides guidance for application and future research directions.
Collapse
Affiliation(s)
- D Xiang
- Dental Material Research Center, Dental Medical Devices Testing Centre, Peking University and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H Lin
- Dental Material Research Center, Dental Medical Devices Testing Centre, Peking University and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| |
Collapse
|
9
|
Xiang D, He J, Jiang T. The correlation between estrogen receptor gene polymorphism and osteoporosis in Han Chinese women. Eur Rev Med Pharmacol Sci 2019; 22:8084-8090. [PMID: 30556843 DOI: 10.26355/eurrev_201812_16498] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To uncover the role of estrogen receptor gene polymorphism in the onset of osteoporosis in Han Chinese women. PATIENTS AND METHODS A total of 122 osteoporosis woman patients who were admitted to this hospital between April 2016 and April 2017 were enrolled in this study as the case group, and during the same period, 106 healthy counterparts who took physical examination as the control group. With the genetic samples collected from subjects in two groups, we detected the polymorphisms of Pvu II and Xba I in the estrogen receptor alpha (ERα) gene and the Rsa-I and Aiu-I polymorphisms in the ERβ gene by Restriction Fragment Length Polymorphism (RFLP), and the related-alleles frequency in subjects carrying the genotype of Pvu-1I and Xba-I polymorphisms in the ERα gene or the genotype of Rsa-I and Alu-I polymorphisms in the ERβ gene in the two groups. RESULTS Comparison of genotype frequencies pp, Pp, and PP of ERα Pvu-II polymorphisms between the case group and the control group showed the differences were statistically significant (p < 0.05), in which the P allele in the case group had a higher frequency than that in the control group (p < 0.05). However, comparisons of the genotype frequencies of xx, Xx, and XX of ERα Xba-I polymorphisms between the case group and the control group showed no statistically significant differences (p > 0.05), and similar results were also found in comparison of the genotype frequencies of rr, Rr, and RR of Rsa-I polymorphisms (p > 0.05). By the comparison of genotype frequencies of ERβ Alu-I and Rsa-I polymorphisms in the case group with those in the control group, and by the comparison of genotype frequencies aa, Aa, and AA of ERβ Alu-I polymorphisms in the case group with those in the control group, all the differences were statistically significant (p < 0.05 ). CONCLUSIONS In Han Chinese women, susceptibility to osteoporosis may be affected by ERα Pvu-II polymorphisms and ERβ Alu-I polymorphisms; those carrying genotypes containing A and P alleles may have a higher risk in osteoporosis.
Collapse
Affiliation(s)
- D Xiang
- Orthopedic Department, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China.
| | | | | |
Collapse
|
10
|
Xia RW, Xun CZ, Xiang D, Zhang JM, Yang QX, Zhao FY, Wang C, Zhu ZY, Li Q, Ye LY. A novel double-variant RHAG allele leads to Rh mod phenotype. Transfus Med 2019; 29:460-465. [PMID: 31032541 DOI: 10.1111/tme.12598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/30/2019] [Accepted: 04/02/2019] [Indexed: 12/28/2022]
Abstract
AIMS/OBJECTIVES We aimed to analyse the molecular backgrounds and red blood cell (RBC) antigen expression of a male blood donor with Rhmod phenotype and his family members. BACKGROUND Rh deficiency phenotypes are rarely found worldwide and are characterised by the lack of Rh antigen expression on RBCs. During routine screening, we found a blood donor who seemingly lacked Rh antigens. Therefore, we recruited the donor and his family for further investigation. METHODS RBC serotyping and antibody screening/identification were performed for each sample. A routine blood examination was also conducted. RHD, RHCE and RHAG were sequenced at the genomic DNA or RNA level. Eleven antigens or proteins associated with Rh complex were tested using flow cytometry analysis. RESULTS The proband and one of his brothers showed extremely weak D antigen and Rh expression levels but did not manifest anaemia. Most of the expressed RBC antigens of the two Rh-deficient individuals were similar to the previously reported cases but with some exceptions. Molecular analyses demonstrated homozygous expression of a novel RHAG allele, namely, c.[572G>A;707A>C], both in the proband and one of his brothers. CONCLUSIONS To our knowledge, we identified the second double-variant RHAG allele and the first one related to Rhmod phenotype. The novel allele was also confirmed to be heritable by family analyses.
Collapse
Affiliation(s)
- R W Xia
- Blood Group Reference Laboratory, Qujing Blood Center, Qujing, China
| | - C Z Xun
- Blood Group Reference Laboratory, Qujing Blood Center, Qujing, China
| | - D Xiang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - J M Zhang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Q X Yang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - F Y Zhao
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - C Wang
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Z Y Zhu
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - Q Li
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - L Y Ye
- Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
11
|
Zhang B, Xiang D, Yang R, Yang L, Li J, Zhao Z. Variations in Tissue-Specific Expression of Adipose Differentiation-Related Protein Gene in Two Native Yunnan Chicken Breeds. Braz J Poult Sci 2019. [DOI: 10.1590/1806-9061-2017-0780] [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] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- B Zhang
- Yunnan Animal Science and Veterinary Institute, China
| | - D Xiang
- Yunnan Animal Science and Veterinary Institute, China
| | - R Yang
- Livestock Workstation of Pu’er City, China
| | - L Yang
- Livestock Workstation of Pu’er City, China
| | - J Li
- Kunming University, China; Kunming University, China
| | - Z Zhao
- Yunnan Animal Science and Veterinary Institute, China
| |
Collapse
|
12
|
Ramírez-González RH, Borrill P, Lang D, Harrington SA, Brinton J, Venturini L, Davey M, Jacobs J, van Ex F, Pasha A, Khedikar Y, Robinson SJ, Cory AT, Florio T, Concia L, Juery C, Schoonbeek H, Steuernagel B, Xiang D, Ridout CJ, Chalhoub B, Mayer KFX, Benhamed M, Latrasse D, Bendahmane A, Wulff BBH, Appels R, Tiwari V, Datla R, Choulet F, Pozniak CJ, Provart NJ, Sharpe AG, Paux E, Spannagl M, Bräutigam A, Uauy C. The transcriptional landscape of polyploid wheat. Science 2018; 361:eaar6089. [PMID: 30115782 DOI: 10.1126/science.aar6089] [Citation(s) in RCA: 497] [Impact Index Per Article: 82.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 07/11/2018] [Indexed: 12/14/2022]
Abstract
The coordinated expression of highly related homoeologous genes in polyploid species underlies the phenotypes of many of the world's major crops. Here we combine extensive gene expression datasets to produce a comprehensive, genome-wide analysis of homoeolog expression patterns in hexaploid bread wheat. Bias in homoeolog expression varies between tissues, with ~30% of wheat homoeologs showing nonbalanced expression. We found expression asymmetries along wheat chromosomes, with homoeologs showing the largest inter-tissue, inter-cultivar, and coding sequence variation, most often located in high-recombination distal ends of chromosomes. These transcriptionally dynamic genes potentially represent the first steps toward neo- or subfunctionalization of wheat homoeologs. Coexpression networks reveal extensive coordination of homoeologs throughout development and, alongside a detailed expression atlas, provide a framework to target candidate genes underpinning agronomic traits in wheat.
Collapse
|
13
|
Li J, Zhao Z, Xiang D, Zhang B, Ning T, Duan T, Rao J, Yang L, Zhang X, Xiong F. Expression of APOB, ADFP and FATP1 and their correlation with fat deposition in Yunnan's top six famous chicken breeds. Br Poult Sci 2018; 59:494-505. [PMID: 30004246 DOI: 10.1080/00071668.2018.1490494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
1. Adipose differentiation related protein (ADFP), fatty acid transport protein 1 (FATP1) and apolipoprotein B (APOB) are suspected to play an important role in determining intramuscular fat and in overall meat quality. 2. Yunnan's top six famous chicken breeds (the Daweishan Mini, Yanjin Black-bone, Chahua, Wuding, Wuliangshan Black-bone and Piao chicken) are known for the high quality of their meat, but little is known about their expression of these three genes. 3. The present study aimed to examine the ADFP, FATP1 and APOB genes in different tissues of these six breeds at different development stages. The subcutaneous fat from the back midline and front, abdominal fat, liver and muscle tissue was sampled at 28, 49, 70, 91 and 112 days. The expression of ADFP, FATP1 and APOB was measured by real-time PCR. 4. The results showed that the expression of the three genes differed depending on age, tissue types and breeds. However, the expression of the three genes correlated with fat traits. In conclusion, the expression of the ADFP, FATP1 and APOB genes is associated with the fat traits of Yunnan's top six chicken breeds. These results could help with molecular marker screening and marker-assisted breeding to improve the quality of poultry for meat production.
Collapse
Affiliation(s)
- J Li
- a Agricultural College , Kunming University , Kunming , China.,b Engineering Research Centre for Urban Modern Agriculture of Higher Education in Yunnan Province , Kunming University , Kunming , China
| | - Z Zhao
- c Institute of Pig and A Nutrition , Yunnan Animal Science and Veterinary Institute , Kunming , China
| | - D Xiang
- c Institute of Pig and A Nutrition , Yunnan Animal Science and Veterinary Institute , Kunming , China
| | - B Zhang
- c Institute of Pig and A Nutrition , Yunnan Animal Science and Veterinary Institute , Kunming , China
| | - T Ning
- a Agricultural College , Kunming University , Kunming , China.,b Engineering Research Centre for Urban Modern Agriculture of Higher Education in Yunnan Province , Kunming University , Kunming , China
| | - T Duan
- d Chuxiong City Animal Husbandry and Veterinary Services , Chuxiong , China
| | - J Rao
- e Zhaotong City Animal Husbandry and Veterinary Technology Promotion Workstation , Zhaotong , China
| | - L Yang
- f Puer City Animal Husbandry Workstation , Puer , China
| | - X Zhang
- g Agricultural Environmental Protection Monitoring Station of Yunnan Province , China
| | - F Xiong
- h Animal Husbandry and Technology Promotion Workstation , Xishuangbanna Dai Autonomous Prefecture , China
| |
Collapse
|
14
|
Cai X, Li F, Lei H, Qu S, Qian C, Xiang D, Wei DQ, Wu W, Xu Q, Wang X. p.R180C mutation of glycosyltransferase B leads to B subgroup, an in vitro and in silico study. Vox Sang 2018; 113:476-484. [PMID: 29726014 DOI: 10.1111/vox.12655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/26/2018] [Accepted: 03/28/2018] [Indexed: 01/12/2023]
Abstract
BACKGROUND AND OBJECTIVES Dysfunctional glycosyltransferase A or B may lead to incomplete glycosylation of H antigen and atypical ABO blood group with weak A or B phenotypes, posing challenges for blood typing for transfusion. MATERIALS AND METHODS Serological studies and ABO gene analysis were performed. Flow cytometry was performed on HeLa cells transfected glycosyltransferase B expressing plasmids. Agglutination of transfected cells and total glycosyltransferase B transfer capacity were examined. Molecular dynamics simulations were used to explore possible dynamic conformational changes around the binding pocket. RESULTS We identified a mutation c.538C>T (p. R180C) of B allele in a Chinese donor and his father with ABw phenotype. In vitro expression study showed that mutation p.R180C, although not affecting expression of glycosyltransferase B, impaired H to B antigen conversion. The in silico analyses found that the residue Arg180 on the internal loop next to the entry of the binding pocket may have its long side chain salt-bridged with the highly flexible C-terminal carboxyl and contribute to the catalysis of H to B antigen conversion. CONCLUSION The p.R180C mutation impairs the conversion from H to B antigen and leads to weak B phenotype. Dynamic interaction between Arg180 and C-terminal of glycosyltransferase B may stabilize its binding with UDP-galactose and facilitate H/B antigen conversion.
Collapse
Affiliation(s)
- X Cai
- Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - F Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - H Lei
- Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - S Qu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - C Qian
- Blood Group Reference Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Group Reference Laboratory, Shanghai Blood Center, Shanghai, China
| | - D-Q Wei
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - W Wu
- Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - Q Xu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - X Wang
- Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
15
|
Zheng JW, Shen W, Sun Y, Xie JH, Xiang D. A novel HLA class I allele: HLA-A*11:01:49. HLA 2018; 91:531-532. [PMID: 29573329 DOI: 10.1111/tan.13259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 03/10/2018] [Accepted: 03/14/2018] [Indexed: 11/28/2022]
Abstract
The HLA-A*11:01:49 allele differs from A*11:01:01:01 by one synonymous nucleotide substitution at position 837.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Blood Center Shanghai, Shanghai, China
| | - W Shen
- Blood Typing Laboratory, Blood Center Shanghai, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Blood Center Shanghai, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Blood Center Shanghai, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Blood Center Shanghai, Shanghai, China
| |
Collapse
|
16
|
Abstract
The HLA-B*40:01:31 allele differs from B*40:01:01 by one nucleotide substitution at position 216.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
17
|
Zheng JW, Shen W, Sun Y, Xie JH, Xiang D. A novel HLA-B allele: HLA-B*40:241. HLA 2017; 91:138-139. [PMID: 29278463 DOI: 10.1111/tan.13194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 12/16/2017] [Accepted: 12/19/2017] [Indexed: 11/28/2022]
Abstract
The HLA-B*40:241 allele differs from B*40:01:01 by 1 nucleotide substitution at position 691.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - W Shen
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
18
|
Yue J, Lian X, Yue P, Xiang D, Wang C. Impact on major CBC parameters caused by different types of lipids in patient plasma. Int J Lab Hematol 2017; 40:e1-e3. [PMID: 29058373 DOI: 10.1111/ijlh.12706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J Yue
- Department of Clinical Laboratory, General Hospital of PLA, Beijing, China
| | - X Lian
- Department of Clinical Laboratory, General Hospital of PLA, Beijing, China
| | - P Yue
- Department of Clinical Laboratory, General Hospital of PLA, Beijing, China
| | - D Xiang
- Department of Clinical Laboratory, General Hospital of PLA, Beijing, China
| | - C Wang
- Department of Clinical Laboratory, General Hospital of PLA, Beijing, China
| |
Collapse
|
19
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. A novel HLA class II allele, HLA-DQB1*03:73. HLA 2017; 90:261-262. [DOI: 10.1111/tan.13083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 06/13/2017] [Accepted: 06/14/2017] [Indexed: 11/29/2022]
Affiliation(s)
- J. W. Zheng
- Blood Typing Laboratory; Shanghai Blood Center; Shanghai China
| | - J. H. Xie
- Blood Typing Laboratory; Shanghai Blood Center; Shanghai China
| | - Y. Sun
- Blood Typing Laboratory; Shanghai Blood Center; Shanghai China
| | - Y. Q. Jiang
- Blood Typing Laboratory; Shanghai Blood Center; Shanghai China
| | - D. Xiang
- Blood Typing Laboratory; Shanghai Blood Center; Shanghai China
| |
Collapse
|
20
|
Dong B, Ge N, Xiang D, Du P. FRAILTY RESEARCH IN CHINA AND ROLE OF FRAILTY ASSESSMENT IN HOME CARE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3835] [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: 02/05/2023] Open
Affiliation(s)
- B. Dong
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - N. Ge
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - D. Xiang
- The Center of Gerontology and Geriatrics at West China Hospital, Sichuan University, Chengdu, China
| | - P. Du
- Renmin University of China, Beijing, China
| |
Collapse
|
21
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. A novel HLA-B allele: HLA-B*40:242. HLA 2017; 90:120-121. [PMID: 28401740 DOI: 10.1111/tan.13041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 03/19/2017] [Accepted: 03/20/2017] [Indexed: 11/30/2022]
Abstract
The HLA-B*40:242 allele differs from B*40:54 by 1 nucleotide substitution at position 190.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
22
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. Characterization of the novel HLA-DRB1*11:01:20 allele. HLA 2017; 89:258-259. [PMID: 28297414 DOI: 10.1111/tan.12993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 11/30/2022]
Abstract
The HLA- DRB1*11:01:20 allele differs from DRB1*11:01:01:01 by 1 nucleotide substitution at position 219.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
23
|
Wu G, Xiang D, Zhang B, Hong Q, Guan G. The parthenogenetic development of porcine in vitro matured oocytes vitrified before or after electric activation. Cryo Letters 2017; 38:407-413. [PMID: 29734408] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
UNLABELLED BACKGROUND: The highly efficient production of parthenogenetic embryos from vitrified porcine in vitro matured oocytes has become essential for biotechnology and biomedicine research. OBJECTIVE To investigate the survival and parthenogenetic development of oocytes vitrified before or after electric activation. MATERIALS AND METHODS The vitrified oocytes were parthenogenetically activated at 0, 0.5, 1, 2 and 4 h post warming (h.p.w.), and fresh oocytes were vitrified at 0, 0.5, 1, 2 and 4 h post electric activation (h.p.a.). RESULTS In comparison with non-vitrified oocytes, the rates of survival and activation of oocytes vitrified at 0.5, 1, 2 and 4 h.p.a. were similar, but the parameters in other vitrified groups significantly decreased. Parthenogenetic development in vitrified 0.5, 1, 2 and 4 h.p.a. groups was also significantly higher than that in other vitrified groups. Moreover, the total cell numbers of blastocysts were similar among all groups. CONCLUSION Porcine oocytes vitrified at 0.5-4 h h.p.a. showed acceptable survival and pronuclear formation, and a higher blastocyst yield could be obtained from these oocytes.
Collapse
Affiliation(s)
- G Wu
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, China
| | - D Xiang
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, China
| | - B Zhang
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, China
| | - Q Hong
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, China
| | - G Guan
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, China.
| |
Collapse
|
24
|
Yang JH, Jiang YQ, Sun Y, Tang QJ, Xiang D. Identification of a novel HLA-DRB1*14 allele, HLA-DRB1*14:127:01, in a Chinese Individual. HLA 2016; 88:208-9. [PMID: 27620853 DOI: 10.1111/tan.12881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 11/28/2022]
Abstract
Two nucleotide changes in codon 77 (ACC → AAT) of HLA-DRB1*14:05:03 result in the allele, HLA-DRB1*14:127:01.
Collapse
Affiliation(s)
- J H Yang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Q J Tang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China.
| |
Collapse
|
25
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. A novel HLA-B allele, HLA-B*13:69. HLA 2016; 88:122-3. [PMID: 27471060 DOI: 10.1111/tan.12847] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/05/2016] [Accepted: 07/05/2016] [Indexed: 11/28/2022]
Abstract
HLA-B*13:69 allele differs from B*13:02:01 by one nucleotide substitution at position 628 from A to C.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
26
|
Wang ZG, Xiang D, Wang XB, Li CF. Preparation of an inoculum of Gluconacetobacter xylinus without mutants in shaken culture. J Appl Microbiol 2016; 121:713-20. [PMID: 27249070 DOI: 10.1111/jam.13193] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 05/25/2016] [Accepted: 05/29/2016] [Indexed: 11/28/2022]
Abstract
AIMS A high-quality inoculum of Gluconacetobacter xylinus is important to produce bacterial cellulose (BC), a versatile biomaterial. This work aims to develop a method of preparing an inoculum of this bacterium with high cell density and without mutants. METHODS AND RESULTS Inocula of G. xylinus ACCC 10220 without and with cellulase or carboxymethyl cellulose (CMC) were prepared in shaken culture. BC pellets and BC-negative mutants were present in the inoculum without additives but absent in the inoculum with additives. Based on BC weights statically produced in fresh BC-producing media initiated by different seed culture, the 24-h-shaken inoculum with 1·50% (w/v) CMC was the best because of high biomass and absence of mutants. The BC weights in fresh media inoculated by the 96-h-static inoculum and 24-h-shaken CMC inoculum at 7% (v/v) were 0·70 and 1·05 g l(-1) , respectively, implying significant difference (P < 0·01) in BC weights. However, structure properties of the two BC samples, including the crystallinity index, mass fraction of cellulose Iα , degree of polymerization (DP) and micromorphology were slightly different. CONCLUSIONS The 24-h-shaken CMC inoculum was the most suitable for a starter culture of BC. SIGNIFICANCE AND IMPACT OF THE STUDY A novel method of preparing G. xylinus inoculum in shaken culture was developed, featuring high biomass, absence of mutants and no BC entanglements. Cellulase or CMC added into the medium completely suppressed mutation of G. xylinus, and CMC facilitated to form colloidal BC with the low DP in shaken culture, indicating less BC stress to cells. These findings suggested the mutation could be induced by BC stress, and not by shear stress commonly accepted.
Collapse
Affiliation(s)
- Z-G Wang
- College of Food Science and Technology, Hainan University, Haikou, China
| | - D Xiang
- College of Food Science and Technology, Hainan University, Haikou, China
| | - X-B Wang
- College of Food Science and Technology, Hainan University, Haikou, China
| | - C-F Li
- College of Food Science and Technology, Hainan University, Haikou, China
| |
Collapse
|
27
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. A novel HLA-B allele, HLA-B*56:40. HLA 2016; 88:51-2. [PMID: 27238407 DOI: 10.1111/tan.12821] [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: 02/02/2016] [Revised: 04/28/2016] [Accepted: 05/02/2016] [Indexed: 11/28/2022]
Abstract
HLA-B*56:40 allele differs from B*56:01:01:01 by one nucleotide substitution at position 874.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| |
Collapse
|
28
|
Wu Y, Fan L, Liu M, Shen W, Xiang D, Cai X. Anti-Di(b) causing hemolytic disease of the fetus and newborn and the challenges of anti-Di(b) in perinatal management in China. Transfus Med 2015; 25:428-30. [PMID: 26578228 DOI: 10.1111/tme.12260] [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] [Received: 12/03/2014] [Revised: 07/22/2015] [Accepted: 10/24/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Y Wu
- Blood Group Reference Laboratory, Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China.,Blood Group Reference Laboratory, Taiyuan Red Cross Blood Center, Taiyuan, China
| | - L Fan
- Blood Group Reference Laboratory, Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - M Liu
- Children's Hospital of Fudan University, Blood Transfusion Department, Shanghai, China
| | - W Shen
- Blood Group Reference Laboratory, Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - D Xiang
- Blood Group Reference Laboratory, Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China
| | - X Cai
- Blood Group Reference Laboratory, Shanghai Institute of Blood Transfusion, Shanghai Blood Center, Shanghai, China.,Blood Transfusion Department, Ruijin Hospital, Medical School of Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
29
|
|
30
|
Yang JH, Jiang YQ, Sun Y, Zheng JW, Tang QJ, Xie JH, Xiang D. Identification of a novel HLA-B*40 allele, HLA-B*40:229, in a Chinese individual. ACTA ACUST UNITED AC 2015; 86:301-2. [PMID: 26302685 DOI: 10.1111/tan.12640] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 07/16/2015] [Indexed: 11/28/2022]
Abstract
The novel HLA-B*40:229 allele shows one nucleotide difference from B*40:02:01 in exon 2 at nucleotide position 97 (C → T).
Collapse
Affiliation(s)
- J H Yang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Y Q Jiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Y Sun
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - Q J Tang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - J H Xie
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| | - D Xiang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P. R. China
| |
Collapse
|
31
|
Xiang D, Yue J, Lan Y, Sha C, Ren S, Li Y, Li M, Wang C. Evaluation of Mindray BC-5000 hematology analyzer: a new miniature 5-part WBC differential instrument. Int J Lab Hematol 2015; 37:597-605. [PMID: 25944368 DOI: 10.1111/ijlh.12370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 02/17/2015] [Indexed: 11/29/2022]
Affiliation(s)
- D. Xiang
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - J. Yue
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - Y. Lan
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - C. Sha
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - S. Ren
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - Y. Li
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - M. Li
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| | - C. Wang
- Department of Clinical Laboratory; Chinese People's Liberation Army General Hospital; Beijing China
| |
Collapse
|
32
|
Zheng JW, Xie JH, Sun Y, Jiang YQ, Xiang D. Identification of a novel HLA-A*24 variant allele, A*24:02:60. ACTA ACUST UNITED AC 2015; 85:504-5. [PMID: 25818924 DOI: 10.1111/tan.12552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 02/16/2015] [Indexed: 11/30/2022]
Abstract
HLA-A*24:02:60 allele differs from A*24:02:01:01 by one nucleotide substitution at nt 564 from C to T.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | | | | | | | | |
Collapse
|
33
|
Tang QJ, Guo ZH, Jiang YQ, Yang JH, Zheng JW, Sun Y, Xie JH, Xiang D. Identification of a novel HLA-B*40 allele, HLA-B*40:210, in a Chinese individual. ACTA ACUST UNITED AC 2014; 85:71-2. [PMID: 25417750 DOI: 10.1111/tan.12465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/01/2014] [Indexed: 11/26/2022]
Abstract
The newly detected HLA-B*40:210 allele has two nucleotide changes in exon 2 compared to B*40:49 allele.
Collapse
Affiliation(s)
- Q J Tang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Abstract
Tomato mottle mosaic virus (ToMMV), a tentative member in genus Tobamovirus, was first reported from a greenhouse tomato sample collected in Mexico in 2013 (2). In August 2013, foliar mottle, shrinking, and necrosis were observed on pepper plants in several vegetable greenhouses of Lhasa, Tibet Autonomous Region, China. Seven symptomatic samples were collected and tested by dot-blot ELISA with antisera against Cucumber mosaic virus, Tobacco mosaic virus (TMV), Cucumber green mottle mosaic virus, Tomato spotted wilt virus, Turnip mosaic virus, and Broad bean wilt virus 2 (kindly provided by Dr. Xueping Zhou of Zhejiang University, China) (3). One of the bell pepper (Capsicum annuum var. grossum) samples reacted with the TMV antibody. Rod-shaped virus particles 300 nm in length were observed in this sample under electron microscopy. The results suggested that a tobamovirus closely related to TMV might be a causal agent. Total nucleic acids were then extracted from all seven samples using a CTAB method (1) and tested by RT-PCR using a pair of tobamovirus degenerate primers, TobamoF (GCWAAGGTKGTWYTBGTRGAYGG) and TobamoR (GTAATTGCTATTGDGTWCCWGC). These two primers were designed according to a conserved region of the TMV, Tomato mosaic virus, and ToMMV genomes (nt 2551-3433 of ToMMV genome [KF477193]). An amplicon of approximately 880 bp was obtained only from the TMV-positive sample. The amplicon was cloned and sequenced (GenBank Accession No. KJ605653). NCBI BLAST search showed that it shared the highest identity (99%) with ToMMV (KF477193), and shared the sequence homology of 82% to Tomato mosaic virus (AF332868) and 77% to TMV (V01408). The results indicated that the symptomatic pepper was infected with ToMMV. To investigate the distribution and incidence of ToMMV, 313 samples of symptomatic pepper, tomato, pumpkin, cucumber, radish, Chinese cabbage, broad bean, pea, and kidney bean samples were collected from 65 fields in Yunnan Province and Tibet Autonomous Region, and tested in RT-PCR with ToMMV-specific primers ToMMVF (AGAGAGATGGCGATAGGTTAAC, identical to nt 830-851 of ToMMV genome, GenBank Accession No. KF477193) and ToMMVR (CTGCAGTCATAGGATCTACTTC, complementary to nt1849-1828). The virus was detected in three tabasco peppers (C. frutescens) from Yunnan and one bell pepper plant from Tibet, suggesting that ToMMV has a restricted host range and is not common in these two regions. To our knowledge, this is the first report of natural infection of ToMMV in peppers as well as in China. References: (1) R. Li et al. J. Virol. Methods 154:48, 2008. (2) R. Li et al. Genome Announc. 1(5):e00794-13, 2013. (3) Y. Xie et al. Virol. J. 10:142, 2013.
Collapse
Affiliation(s)
- Y Y Li
- Key Laboratory of Agricultural Biodiversity for Pest Management of China Education Ministry, Yunnan Agricultural University, Kunming 650201, China
| | - C L Wang
- Agricultural Research Institute, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, China
| | - D Xiang
- Vegetable Research Institute, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850032, China
| | - R H Li
- USDA-ARS, National Germplasm Resources Laboratory, Beltsville, MD 20705
| | - Y Liu
- Plant Protection Institute, Hunan Academy of Agricultual Sciences, Changsha 410125, China
| | - F Li
- Key Laboratory of Agricultural Biodiversity for Pest Management of China Education Ministry, Yunnan Agricultural University, Kunming 650201, China
| |
Collapse
|
35
|
Hemsing E, Marinelli A, Marcus G, Xiang D. Correlated energy-spread removal with space charge for high-harmonic generation. Phys Rev Lett 2014; 113:134802. [PMID: 25302893 DOI: 10.1103/physrevlett.113.134802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Indexed: 06/04/2023]
Abstract
We study the effect of longitudinal space charge on the correlated energy spread of a relativistic high-brightness electron beam that has been density modulated for the emission of coherent, high-harmonic radiation. We show that, in the case of electron bunching induced by a laser modulator followed by a dispersive chicane, longitudinal space charge forces can act to strongly reduce the induced energy modulation of the beam without a significant reduction in the harmonic bunching content. This effect may be optimized to enhance the output power and overall performance of free-electron lasers that produce coherent light through high-gain harmonic generation. It also increases the harmonic number achievable in these devices, which are otherwise gain-limited by the induced energy modulation from the laser.
Collapse
Affiliation(s)
- E Hemsing
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - A Marinelli
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - G Marcus
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D Xiang
- Department of Physics and Astronomy, Key Laboratory for Laser Plasmas (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
36
|
Zheng JW, Guo ZH, Jiang YQ, Yang JH, Xie JH, Sun Y, Tang QJ, Xiang D. A new human leukocyte antigen class I allele: HLA-A*11:125. ACTA ACUST UNITED AC 2014; 84:408-9. [PMID: 25040231 DOI: 10.1111/tan.12399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 05/02/2014] [Accepted: 05/26/2014] [Indexed: 11/30/2022]
Abstract
HLA-A*11:125 allele differs from A*11:01:01 by one nucleotide substitution at nt 140 from T to C.
Collapse
Affiliation(s)
- J W Zheng
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Xiang D, Liu CC, Wang MJ, Li JX, Chen F, Yao H, Yu B, Lu L, Borjigin U, Chen YX, Zhong L, Wangensteen KJ, He ZY, Wang X, Hu YP. Non-viral FoxM1 gene delivery to hepatocytes enhances liver repopulation. Cell Death Dis 2014; 5:e1252. [PMID: 24853430 PMCID: PMC4047909 DOI: 10.1038/cddis.2014.230] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 04/03/2014] [Accepted: 04/14/2014] [Indexed: 01/08/2023]
Abstract
Hepatocyte transplantation as a substitute strategy of orthotopic liver transplantation is being studied for treating end-stage liver diseases. Several technical hurdles must be overcome in order to achieve the therapeutic liver repopulation, such as the problem of insufficient expansion of the transplanted hepatocytes in recipient livers. In this study, we analyzed the application of FoxM1, a cell-cycle regulator, to enhance the proliferation capacity of hepatocytes. The non-viral sleeping beauty (SB) transposon vector carrying FoxM1 gene was constructed for delivering FoxM1 into the hepatocytes. The proliferation capacities of hepatocytes with FoxM1 expression were examined both in vivo and in vitro. Results indicated that the hepatocytes with FoxM1 expression had a higher proliferation rate than wild-type (WT) hepatocytes in vitro. In comparison with WT hepatocytes, the hepatocytes with FoxM1 expression had an enhanced level of liver repopulation in the recipient livers at both sub-acute injury (fumaryl acetoacetate hydrolase (Fah)–/– mice model) and acute injury (2/3 partial hepatectomy mice model). Importantly, there was no increased risk of tumorigenicity with FoxM1 expression in recipients even after serial transplantation. In conclusion, expression of FoxM1 in hepatocytes enhanced the capacity of liver repopulation without inducing tumorigenesis. FoxM1 gene delivered by non-viral SB vector into hepatocytes may be a viable approach to promote therapeutic repopulation after hepatocyte transplantation.
Collapse
Affiliation(s)
- D Xiang
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - C-C Liu
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - M-J Wang
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - J-X Li
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - F Chen
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - H Yao
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - B Yu
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - L Lu
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - U Borjigin
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Huhhot, China
| | - Y-X Chen
- 1] Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA [2] Department of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - L Zhong
- 1] School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China [2] Shenzhen Center for ADR Monitoring, Shenzhen, China
| | - K J Wangensteen
- Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Z-Y He
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| | - X Wang
- 1] The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Huhhot, China [2] Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA [3] Hepatoscience Incorporation, Palo Alto, CA, USA
| | - Y-P Hu
- 1] Department of Cell Biology, Second Military Medical University, Shanghai, China [2] Center for Stem Cell and Medicine, The Graduate School, Second Military Medical University, Shanghai, China
| |
Collapse
|
38
|
Wallace AS, Xiang D, Hockman L, Arya M, Jeffress J, Wang Z, Dale PS. Abstract P6-06-35: Invasive lobular cancer versus mixed invasive lobular cancer with invasive ductal cancer: 20 year outcomes at one institution. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p6-06-35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Conflicting reports exist regarding characteristics and outcomes of patients with only invasive lobular carcinoma (ILC) and mixed invasive lobular and ductal carcinoma (ILC/IDC). The purpose of this project is to report experience of 20 year cohort at one institution.
Methods: Patients diagnosed with ILC between 1990 and 2010 were divided into two groups: ILC alone and ILC/IDC. Patient demographics, history, diagnosis and treatment modalities, and outcomes were captured. Chi-square, log-rank, and Wilcoxon rank sums tests were utilized for statistical analysis. P < 0.05 was considered significant.
Results: In 189 AJCC Stage I-III patients, ILC was identified in 149 (79%) and ILC/IDC in 39 (21%). ILC stage was I, II, III in 46 (31%), 57 (41%), 32 (21%) ILC, and ILC/IDC was 17 (44%), 16 (41%), 4 (10%). Median age (range) at diagnosis was 64 (31-88) for ILC and 64 (35-84) years for ILC/IDC (p = 0.78). Median largest tumor diameter was 22 (range 1-100) in ILC, and 20 (range 2-110) mm in ILC/IDC (p = 0.97). Seventy-eight (52%) and 20 (51%) were diagnosed with ILC and ILC/IDC clinically, and 58 (39%) and 15 (38%) were diagnosed with ILC and ILC/IDC radiographically (p = 0.96). Treatment modalities were mastectomy and breast conservation therapy in 82(55%) and 67(45%) of patients with ILC, 18 (46%) and 21 (54%) of patients with ILC/IDC (p = 0.32). In 136 (91%) ILC and 33 (85%) ILC/IDC patients who had nodal evaluation/excision, 59 (43%) ILC and 12 (36%) ILC/IDC patients presented with positive nodal status. ER, PR, and HER2 status were positive in 132 (89%), 104 (70%), 7 (5%) ILC, and 29 (74%), 26 (67%), 3 (8%) ILC/IDC patients respectively (p = 0.02, p = 0.85, p = 0.17).
Median (range) follow-up for ILC was 6.1 (< 1-22.3), and 8.0 (1.72-17.7) years for ILC/IDC (p = 0.03). At the time of analysis, 43(29%) patients with ILC, and 11(28%) patients with ILC/IDC had expired (p = 0.94). Median (range) follow-up for patients who were alive at time of analysis was 6.8 (<1-20.7) years for ILC, and10.1 (2.3-17.7) years for ILC/IDC (p = 0.06). Time to first recurrence was 3.23 (0.8-17.0) years in ILC, and 5.2 (2.9-9.3) years in ILC/IDC (p = 0.20). Recurrence was identified in 33(22%) ILC: 15(46%) locoregional and18 (54%) distant disease. Similarly, recurrence was found in 7 (20%) ILC/IDC patients: 4 locoregional and 3 distant. Most locoregional recurrences, 12/15 (80%), occurred in the ipsilateral breast in ILC, and 3/4 (75%) in ILC/IDC (p = 0.82). Five years disease free survival rates were 76% ILC and 85% for ILC/IDC, and 10 years rates were 63% for ILC and 67% for ILC/IDC (p = 0.4941). Overall survival estimates at 5 years were 84% for ILC and 92% for ILC/IDC, and at 10 years were 65% for ILC and 74% for ILC/IDC (p = 0.52).
Conclusion: While basic demographics and survival patterns did not differ statistically between ILC and ILC/IDC, pure ILC histology tends to carry a higher risk of recurrence, as well as worse disease free and overall survival compared to ILC/IDC. ILC histology was more likely to be ER positive, present with advanced stage, and recur in the ipsilateral breast than the contralateral breast.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P6-06-35.
Collapse
Affiliation(s)
- AS Wallace
- University of Missouri, Columbia; Creighton University
| | - D Xiang
- University of Missouri, Columbia; Creighton University
| | - L Hockman
- University of Missouri, Columbia; Creighton University
| | - M Arya
- University of Missouri, Columbia; Creighton University
| | - J Jeffress
- University of Missouri, Columbia; Creighton University
| | - Z Wang
- University of Missouri, Columbia; Creighton University
| | - PS Dale
- University of Missouri, Columbia; Creighton University
| |
Collapse
|
39
|
Yang JH, Guo ZH, Jiang YQ, Zheng JW, Tang QJ, Xie JH, Sun Y, Xiang D. Identification of a novelHLA-A*02allele,HLA-A*02:06:13, in a Chinese individual. ACTA ACUST UNITED AC 2013; 83:52-3. [DOI: 10.1111/tan.12241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 10/13/2013] [Indexed: 11/28/2022]
Affiliation(s)
- J H Yang
- Blood Typing Laboratory, Shanghai Blood Center, Shanghai, P.R. China
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Marinelli A, Hemsing E, Dunning M, Xiang D, Weathersby S, O'Shea F, Gadjev I, Hast C, Rosenzweig JB. Generation of coherent broadband photon pulses with a cascaded longitudinal space-charge amplifier. Phys Rev Lett 2013; 110:264802. [PMID: 23848882 DOI: 10.1103/physrevlett.110.264802] [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] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Indexed: 06/02/2023]
Abstract
The longitudinal space-charge amplifier has been recently proposed by Schneidmiller and Yurkov as an alternative to the free-electron laser instability for the generation of intense broadband radiation pulses [Phys. Rev. ST Accel. Beams 13, 110701 (2010)]. In this Letter, we report on the experimental demonstration of a cascaded longitudinal space-charge amplifier at optical wavelengths. Although seeded by electron beam shot noise, the strong compression of the electron beam along the three amplification stages leads to emission of coherent undulator radiation pulses exhibiting a single spectral spike and a single transverse mode. The on-axis gain is estimated to exceed 4 orders of magnitude with respect to spontaneous emission.
Collapse
Affiliation(s)
- A Marinelli
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Dunning M, Hemsing E, Hast C, Raubenheimer TO, Weathersby S, Xiang D, Fu F. Demonstration of cascaded optical inverse free-electron laser accelerator. Phys Rev Lett 2013; 110:244801. [PMID: 25165931 DOI: 10.1103/physrevlett.110.244801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Indexed: 06/03/2023]
Abstract
We report on a proof-of-principle demonstration of a two-stage cascaded optical inverse free-electron laser (IFEL) accelerator in which an electron beam is accelerated by a strong laser pulse after being packed into optical microbunches by a weaker initial laser pulse. We show experimentally that injection of precisely prepared optical microbunches into an IFEL allows net acceleration or deceleration of the beam, depending on the relative phase of the two laser pulses. The experimental results are in excellent agreement with simulation. The demonstrated technique holds great promise to significantly improve the beam quality of IFELs and may have a strong impact on emerging laser accelerators driven by high-power optical lasers.
Collapse
Affiliation(s)
- M Dunning
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - E Hemsing
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - C Hast
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T O Raubenheimer
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - S Weathersby
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - D Xiang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - F Fu
- Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
| |
Collapse
|
42
|
Chen J, Tang Z, Dong X, Gao S, Fang H, Wu D, Xiang D, Zhang S. Radiofrequency ablation for liver metastasis from gastric cancer. Eur J Surg Oncol 2013. [PMID: 23597495 DOI: 10.1016/j.ejso.2013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022] Open
Abstract
AIMS Several studies have reported the benefit of hepatic resection for metastatic tumor from gastric cancer. However, the value of treatment with radiofrequency ablation (RFA) has not been clearly defined. METHODS Between Jan 2002 and Dec 2007, 21 patients with primary gastric cancer were diagnosed with synchronous or metachronous liver metastases. All patients were treated with RFA, and the complication, survival, and recurrence rates were assessed. RESULTS The postoperative complication rate was 5% (1/21), with no mortality. The median actuarial survival time was 14 months. The 1-yr, 2-yr, 3-yr, and 5-yr survival rates after RFA were 70%, 11%, 5%, and 3%, respectively. With a median follow-up time of 19 months, local recurrence at the RFA site was 19% (4/21). Solitary metastasis had significantly longer survival than multiple lesions after RFA (22 vs 10 months, P = 0.004). CONCLUSIONS RFA provides a minimally invasive and safe modality of treatment patients with liver metastasis from gastric cancer. Patients with solitary liver lesion were considered appropriate candidates for RFA.
Collapse
Affiliation(s)
- J Chen
- Department of Surgery, 2nd Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou 310009, PR China
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Chen J, Tang Z, Dong X, Gao S, Fang H, Wu D, Xiang D, Zhang S. Radiofrequency ablation for liver metastasis from gastric cancer. Eur J Surg Oncol 2013; 39:701-6. [PMID: 23597495 DOI: 10.1016/j.ejso.2013.03.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 02/25/2013] [Accepted: 03/25/2013] [Indexed: 12/16/2022] Open
Abstract
AIMS Several studies have reported the benefit of hepatic resection for metastatic tumor from gastric cancer. However, the value of treatment with radiofrequency ablation (RFA) has not been clearly defined. METHODS Between Jan 2002 and Dec 2007, 21 patients with primary gastric cancer were diagnosed with synchronous or metachronous liver metastases. All patients were treated with RFA, and the complication, survival, and recurrence rates were assessed. RESULTS The postoperative complication rate was 5% (1/21), with no mortality. The median actuarial survival time was 14 months. The 1-yr, 2-yr, 3-yr, and 5-yr survival rates after RFA were 70%, 11%, 5%, and 3%, respectively. With a median follow-up time of 19 months, local recurrence at the RFA site was 19% (4/21). Solitary metastasis had significantly longer survival than multiple lesions after RFA (22 vs 10 months, P = 0.004). CONCLUSIONS RFA provides a minimally invasive and safe modality of treatment patients with liver metastasis from gastric cancer. Patients with solitary liver lesion were considered appropriate candidates for RFA.
Collapse
Affiliation(s)
- J Chen
- Department of Surgery, 2nd Affiliated Hospital, Zhejiang University School of Medicine, No. 88 Jiefang Road, Hangzhou 310009, PR China
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Xiang D, Sharma VR, Freter CE, Yan J. Anti-tumor monoclonal antibodies in conjunction with β-glucans: a novel anti-cancer immunotherapy. Curr Med Chem 2013; 19:4298-305. [PMID: 22834812 DOI: 10.2174/092986712802884303] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 06/21/2012] [Accepted: 07/17/2012] [Indexed: 11/22/2022]
Abstract
Monoclonal antibodies (mAbs) have greatly advanced the field of anti-cancer immunotherapy and have made a major impact in clinical medicine. While more mAbs have been approved by the FDA and entered into the clinical therapeutic arena with indications to treat various solid tumors and hematologic malignancies, extensive efforts have also been made to make mAb therapy more effective. Combination therapy of anti-tumor mAbs with chemotherapeutic drugs has been widely used in the clinical patient care. In addition, many immune stimulating agents have been specifically studied for this very purpose. One compound in particular, β-glucan, has shown very promising and exciting results in pre-clinical animal models and early phase human clinical trials. β-Glucans are naturally occurring, abundant polysaccharides with different structures that can be extracted and purified from fungi, bacteria, oats and barley. The active components of yeast-derived β-glucan exert their unique immune stimulating functions by binding specifically to complement receptor 3 (CR3) via lectin-like domain (LLD) and activating CR3 to promote cellular cytotoxicity of iC3b-coated cancer cells. In addition, particulate yeast-derived β-glucan stimulates both innate and adaptive anti-tumor immune responses. This review covers the anti-cancer mechanisms of anti-tumor mAbs and β-glucans, the pre-clinical studies done with β-glucans in conjunction with anti-tumor mAbs in human carcinoma xenograft models, and the preliminary results of human clinical trials with different β-glucans, as well as those of phase I/II and III studies using the combination of yeast-derived soluble β-glucan and anti-tumor mAbs.
Collapse
Affiliation(s)
- D Xiang
- Division of Hematology and Medical Oncology, Department of Medicine, James Graham Brown Cancer Center, University of Louisville, Louisville, KY 40202, USA
| | | | | | | |
Collapse
|
45
|
Marinelli A, Dunning M, Weathersby S, Hemsing E, Xiang D, Andonian G, O'Shea F, Miao J, Hast C, Rosenzweig JB. Single-shot coherent diffraction imaging of microbunched relativistic electron beams for free-electron laser applications. Phys Rev Lett 2013; 110:094802. [PMID: 23496718 DOI: 10.1103/physrevlett.110.094802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Indexed: 06/01/2023]
Abstract
With the advent of coherent x rays provided by the x-ray free-electron laser (FEL), strong interest has been kindled in sophisticated diffraction imaging techniques. In this Letter, we exploit such techniques for the diagnosis of the density distribution of the intense electron beams typically utilized in an x-ray FEL itself. We have implemented this method by analyzing the far-field coherent transition radiation emitted by an inverse-FEL microbunched electron beam. This analysis utilizes an oversampling phase retrieval method on the transition radiation angular spectrum to reconstruct the transverse spatial distribution of the electron beam. This application of diffraction imaging represents a significant advance in electron beam physics, having critical applications to the diagnosis of high-brightness beams, as well as the collective microbunching instabilities afflicting these systems.
Collapse
Affiliation(s)
- A Marinelli
- Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Collins R, Xiang D, Christie A, Leitch M, Euhus D, Rao R, Haley B, Sarode V. Abstract P1-07-04: Comparison of HER2 expression by immunohistochemistry (IHC) using automated imaging system and fluorescence in situ hybridization (FISH). A retrospective analysis of 2853 cases. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p1-07-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Accurate assessment of HER2 status is critical for selecting patients who will benefit from trastuzumab therapy. There is still no consensus regarding the optimal method to assess HER2 status. Computerized image analysis has been shown to provide a more accurate and objective way for quantification of HER2 expression by IHC than manual evaluation. It has been suggested that the use of image analysis may help to resolve some of the discrepancies between IHC and FISH assay.
We compared the results of HER2 expression by IHC using automated image analysis with fluorescent in situ hybridization (FISH) assay.
Design: Testing for HER2 expression by IHC and FISH was performed on 2853 specimens at UT Southwestern Medical Center between the years 2002 to 2011. Quantification of IHC HER2 expression was done by image analysis and scored as positive (>2.0), borderline (1.5 to 2.0) and negative. (<1.5). The PathVysion kit was used for FISH assay to evaluate HER2 amplification. Ratios >2.0, 1.8 to 2.0 and <1.8 were defined positive, borderline and negative amplification respectively.
Results: IHC compared to FISH
Conclusion: Despite improvements in IHC testing, the FISH assay may be a better method for determining HER2 status. Factors such as tissue fixation, scoring methods and choice of antibodies may contribute to the lower specificity of IHC.
In the amplified group, the gene amplification ratio correlated with protein expression, being highest in the IHC positive cases and lowest in those that were negative.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P1-07-04.
Collapse
Affiliation(s)
- R Collins
- University of Texas Southwestern Medical Center, Dallas, TX
| | - D Xiang
- University of Texas Southwestern Medical Center, Dallas, TX
| | - A Christie
- University of Texas Southwestern Medical Center, Dallas, TX
| | - M Leitch
- University of Texas Southwestern Medical Center, Dallas, TX
| | - D Euhus
- University of Texas Southwestern Medical Center, Dallas, TX
| | - R Rao
- University of Texas Southwestern Medical Center, Dallas, TX
| | - B Haley
- University of Texas Southwestern Medical Center, Dallas, TX
| | - V Sarode
- University of Texas Southwestern Medical Center, Dallas, TX
| |
Collapse
|
47
|
Dunning M, Hast C, Hemsing E, Jobe K, McCormick D, Nelson J, Raubenheimer TO, Soong K, Szalata Z, Walz D, Weathersby S, Xiang D. Generating periodic terahertz structures in a relativistic electron beam through frequency down-conversion of optical lasers. Phys Rev Lett 2012; 109:074801. [PMID: 23006375 DOI: 10.1103/physrevlett.109.074801] [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] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Indexed: 06/01/2023]
Abstract
We report generation of density modulation at terahertz (THz) frequencies in a relativistic electron beam through laser modulation of the beam longitudinal phase space. We show that by modulating the energy distribution of the beam with two lasers, density modulation at the difference frequency of the two lasers can be generated after the beam passes through a chicane. In this experiment, density modulation around 10 THz was generated by down-converting the frequencies of an 800 nm laser and a 1550 nm laser. The central frequency of the density modulation can be tuned by varying the laser wavelengths, beam energy chirp, or momentum compaction of the chicane. This technique can be applied to accelerator-based light sources for generation of coherent THz radiation and marks a significant advance toward tunable narrow band THz sources.
Collapse
Affiliation(s)
- M Dunning
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Xiang D, Colby E, Dunning M, Gilevich S, Hast C, Jobe K, McCormick D, Nelson J, Raubenheimer TO, Soong K, Stupakov G, Szalata Z, Walz D, Weathersby S, Woodley M. Evidence of high harmonics from echo-enabled harmonic generation for seeding x-ray free electron lasers. Phys Rev Lett 2012; 108:024802. [PMID: 22324690 DOI: 10.1103/physrevlett.108.024802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Indexed: 05/31/2023]
Abstract
Echo-enabled harmonic generation free electron lasers hold great promise for the generation of fully coherent radiation in x-ray wavelengths. Here we report the first evidence of high harmonics from the echo-enabled harmonic generation technique in the realistic scenario where the laser energy modulation is comparable to the beam slice energy spread. In this experiment, coherent radiation at the seventh harmonic of the second seed laser is generated when the energy modulation amplitude is about 2-3 times the slice energy spread. The experiment confirms the underlying physics of echo-enabled harmonic generation and may have a strong impact on emerging seeded x-ray free electron lasers that are capable of generating laserlike x rays which will advance many areas of science.
Collapse
Affiliation(s)
- D Xiang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Xiang D, Ma Y, Ding C, Kloecker GH, Yan J. A vaccine approach for breast cancer immunotherapy by targeting HER2/neu antigen to B cells via CD19 molecule. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.27_suppl.287] [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: 11/20/2022] Open
Abstract
287 Background: Trastuzumab has been proven to be effective in the immunotherapy for Her-2/neu-positive breast cancer. However, this adoptively transferred therapeutic Ab must be continuously given to the patient with huge financial cost. Thus, it would be desirable if tumor vaccines could elicit long-lasting trastuzumab-like Ab. Methods: Constructing fusion protein of anti-mouse CD19 single chain variable fragment (anti-CD19-scFv) with human Her-2/neu extracellular domain P3-4 (P3-4) by extracting total RNA from Rat anti-mouse CD19 hybridoma (1D3) and first strand cDNA was synthesized accordingly. VH and VL were amplified using designed primers. Single chain Fv (VL-VH) was then synthesized by overlapping PCR. Then constructs were sequenced and cloned into pET-20b(+) vectors. Fragments P3-4 of extracellular domains of human Her-2/neu was cloned from pcDNA3.1-Her2 and then cloned into pET-20b(+)-scFv. Series of constructs were expressed and purified according to standard protocol and verified by Western Blot. Results: Both in vitro and in vivo studies demonstrated that fusion proteins anti-CD19-scFv and anti-CD19-scFv-P3-4 but not P3-4 could specifically bind to B cells with high affinity. Mice immunized with anti-CD19-scFv-P3-4 secreted higher titers of IgG and IgM than those from controls (p<0.05). Studies also demonstrated that sera from anti-CD19-scFv-P3-4 but not anti-CD19-scFv or P3-4 immunized mice stained with Her-2/neu expressing SKOV-3 tumor cells. These Abs also competitively inhibited trastuzumab-mediated Ag binding, suggesting that trastuzumab-like Ab responses were elicited. WT mice immunized with anti-CD19-scFv-P3-4 fusion protein then challenged with D2/F2-Her-2 mammary tumor cells showed significantly reduced tumor burden compared to those immunized with control fusion proteins (p<0.05) and had enhanced median overall survival to 45 days versus 34 days in WT mice immunized with either anti-CD19-scFv or P3-4. Conclusions: Targeting of Her-2/neu antigens to B cells stimulates Th-dependent humoral immune responses with anti tumor effect in mouse model. These findings provide a novel avenue for successful development of breast cancer vaccination strategy and help to fight for cancer.
Collapse
Affiliation(s)
- D. Xiang
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY
| | - Y. Ma
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY
| | - C. Ding
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY
| | - G. H. Kloecker
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY
| | - J. Yan
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY
| |
Collapse
|
50
|
Xiang D, Ma Y, Ding C, Kloecker GH, Yan J. Targeting HER2/neu antigen to B cells via CD19 molecule: A vaccine approach for breast cancer immunotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e13074] [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: 11/20/2022] Open
|