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Ye H, Yu W, Ni Y, Bao X, Zhang X, Li Y, Chen A, Li J, Zheng L. Apatinib plus chemotherapy is associated with an improved tumor response, survival and tolerance compared with chemotherapy alone for advanced lung adenocarcinoma treatment. Oncol Lett 2024; 27:194. [PMID: 38495832 PMCID: PMC10941069 DOI: 10.3892/ol.2024.14327] [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: 05/06/2023] [Accepted: 11/13/2023] [Indexed: 03/19/2024] Open
Abstract
Apatinib plus chemotherapy demonstrates good efficacy in multiple advanced carcinomas; however, its use in patients with advanced lung adenocarcinoma (LUAD) has not yet been assessed. The present study evaluated the potential benefits of apatinib plus chemotherapy in patients with advanced LUAD. A total of 145 patients with advanced LUAD and negative driver genes who received apatinib plus chemotherapy (n=65) or chemotherapy alone (n=80) were analyzed. The overall response rate was significantly improved by apatinib plus chemotherapy vs. chemotherapy alone (53.8 vs. 36.3%; P=0.034). Moreover, progression-free survival (PFS) was significantly longer in patients who received apatinib plus chemotherapy, compared with those who received chemotherapy alone [median (95% CI), 13.4 months (11.5-15.3) vs. 8.2 months (6.9-9.5); P<0.001], as was overall survival (OS) [median (95% CI), 23.1 months (not reached) vs. 17.0 months (14.6-19.4; P=0.001). Following adjustment by multivariate Cox regression analysis, apatinib plus chemotherapy was associated with a significantly longer PFS [hazard ratio (HR), 0.444; P<0.001] and OS (HR, 0.347; P<0.001), compared with chemotherapy alone. Subgroup analyses revealed that PFS and OS were significantly improved following apatinib plus chemotherapy vs. chemotherapy alone (all P<0.05) in patients receiving first- or second-line treatment. Notably, the incidence of hypertension was significantly increased following apatinib plus chemotherapy vs. chemotherapy alone (43.1 vs. 25.0%; P=0.021), whereas the incidence of other adverse events was not significantly different between the two treatment groups (all P>0.05). In conclusion, apatinib plus chemotherapy is associated with an improved treatment response and survival compared with chemotherapy alone, with a tolerable safety profile in patients with advanced LUAD.
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Affiliation(s)
- Hua Ye
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Wenwen Yu
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Yangyang Ni
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Xiaoqiong Bao
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Xie Zhang
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Yunlei Li
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Ali Chen
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Jifa Li
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
| | - Long Zheng
- Department of Pulmonary and Critical Care Medicine, Yueqing People's Hospital, Yueqing, Zhejiang 325600, P.R. China
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Xu Q, Bao X, Lin Z, Tang L, He LN, Ren J, Zuo Z, Hu K. AStruct: detection of allele-specific RNA secondary structure in structuromic probing data. BMC Bioinformatics 2024; 25:91. [PMID: 38429654 DOI: 10.1186/s12859-024-05704-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 02/14/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Uncovering functional genetic variants from an allele-specific perspective is of paramount importance in advancing our understanding of gene regulation and genetic diseases. Recently, various allele-specific events, such as allele-specific gene expression, allele-specific methylation, and allele-specific binding, have been explored on a genome-wide scale due to the development of high-throughput sequencing methods. RNA secondary structure, which plays a crucial role in multiple RNA-associated processes like RNA modification, translation and splicing, has emerged as an essential focus of relevant research. However, tools to identify genetic variants associated with allele-specific RNA secondary structures are still lacking. RESULTS Here, we develop a computational tool called 'AStruct' that enables us to detect allele-specific RNA secondary structure (ASRS) from RT-stop based structuromic probing data. AStruct shows robust performance in both simulated datasets and public icSHAPE datasets. We reveal that single nucleotide polymorphisms (SNPs) with higher AStruct scores are enriched in coding regions and tend to be functional. These SNPs are highly conservative, have the potential to disrupt sites involved in m6A modification or protein binding, and are frequently associated with disease. CONCLUSIONS AStruct is a tool dedicated to invoke allele-specific RNA secondary structure events at heterozygous SNPs in RT-stop based structuromic probing data. It utilizes allelic variants, base pairing and RT-stop information under different cell conditions to detect dynamic and functional ASRS. Compared to sequence-based tools, AStruct considers dynamic cell conditions and outperforms in detecting functional variants. AStruct is implemented in JAVA and is freely accessible at: https://github.com/canceromics/AStruct .
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Affiliation(s)
- Qingru Xu
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA, 02215, USA
| | - Xiaoqiong Bao
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China
| | - Zhuobin Lin
- Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lin Tang
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China
| | - Li-Na He
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jian Ren
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China
| | - Zhixiang Zuo
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510060, China.
| | - Kunhua Hu
- Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
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Zhao Q, Zhou X, Wu J, Cai J, Bao X, Tang L, Wang C, Liu C, Wang Y, Teng Y, Zheng M, Mu W, Zuo Z, Xie Y, Luo X, Ren J. BioTreasury: a community-based repository enabling indexing and rating of bioinformatics tools. Sci China Life Sci 2024; 67:221-229. [PMID: 38157107 DOI: 10.1007/s11427-023-2509-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024]
Abstract
The exponential growth of bioinformatics tools in recent years has posed challenges for scientists in selecting the most suitable one for their data analysis assignments. Therefore, to aid scientists in making informed choices, a community-based platform that indexes and rates bioinformatics tools is urgently needed. In this study, we introduce BioTreasury ( http://biotreasury.rjmart.cn ), an integrated community-based repository that provides an interactive platform for users and developers to share their experiences in various bioinformatics tools. BioTreasury offers a comprehensive collection of well-indexed bioinformatics software, tools, and databases, totaling over 10,000 entries. In the past two years, we have continuously improved and maintained BioTreasury, adding several exciting features, including creating structured homepages for every tool and user, a hierarchical category of bioinformatics tools and classifying tools using large language model (LLM). BioTreasury streamlines the tool submission process with intelligent auto-completion. Additionally, BioTreasury provides a wide range of social features, for example, enabling users to participate in interactive discussions, rate tools, build and share tool collections for the public. We believe BioTreasury can be a valuable resource and knowledge-sharing platform for the biomedical community. It empowers researchers to effectively discover and evaluate bioinformatics tools, fostering collaboration and advancing bioinformatics research.
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Affiliation(s)
- Qi Zhao
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Xin Zhou
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jingxing Wu
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Jieyi Cai
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Xiaoqiong Bao
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Lin Tang
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Chaoye Wang
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Chunlei Liu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yukai Wang
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Yuyan Teng
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Mohan Zheng
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Weiping Mu
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Zhixiang Zuo
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China
| | - Yubin Xie
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xiaotong Luo
- Guangdong Institute of Gastroenterology, Department of General Surgery, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Jian Ren
- School of Life Sciences, State Key Laboratory of Oncology in South China, Cancer Center, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University, Guangzhou, 510060, China.
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Ye H, Yu W, Li Y, Bao X, Ni Y, Chen X, Sun Y, Chen A, Zhou W, Li J. AIM2 fosters lung adenocarcinoma immune escape by modulating PD-L1 expression in tumor-associated macrophages via JAK/STAT3. Hum Vaccin Immunother 2023; 19:2269790. [PMID: 37877820 PMCID: PMC10601527 DOI: 10.1080/21645515.2023.2269790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/08/2023] [Indexed: 10/26/2023] Open
Abstract
This work was devised to discuss the effect of AIM2 on the immunosuppression of LUAD tumors, as well as its molecular mechanism. An allograft mouse model was built. Mouse macrophages were isolated and collected. The infiltration level of Mø and expression of M1 Mø, M2 Mø markers, and PD-L1 were assayed by IHC and flow cytometry. Expression levels of M1 Mø and M2 Mø marker genes and PD-L1 were detected by qPCR. The expression of proteins linked with JAK/STAT3 was tested by western blot. CD8+T cells and NK cells were activated in vitro and co-cultured with mouse macrophages, and their cytotoxicity was detected by LDH method. The proportion of CD206+PD-L1+ cells and the activation and proliferation of CD8+T cells were assayed by flow cytometry. Multicolor immunofluorescence was utilized to assay the co-localization of proteins. AIM2 demonstrated a high expression in LUAD, exhibiting a conspicuous positive correlation with the expression of the M2 Mø markers as well as PD-L1. Expression of M1 markers was upregulated after knockdown of AIM2, while M2 markers expression and PD-L1 were downregulated, and the colocalization of proteins linked with PD-L1 and M2 Mø was decreased. The infiltration and cytotoxicity of CD8+T cells and NK cells increased after silencing AIM2. After the knockdown of AIM2, which was enriched in the JAK/STAT3 pathway, the phosphorylation levels of JAK1, JAK2, and STAT3 were reduced, the immune infiltration level of CD8+T cells increased, and the co-localization level of PD-L1 and PD-1 dropped. The activity and proliferation level of CD8+T cells were increased with the reduced PD-1 expression. AIM2 fosters M2 Mø polarization and PD-L1 expression via the JAK/STAT3 pathway. Moreover, AIM2 promotes the immune escape of LUAD via the PD-1/PD-L1 axis. Our work may blaze a trail for the clinical treatment of LUAD.
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Affiliation(s)
- Hua Ye
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Wenwen Yu
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yunlei Li
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Xiaoqiong Bao
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yangyang Ni
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Xiangxiang Chen
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yangjie Sun
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ali Chen
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Weilong Zhou
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
| | - Jifa Li
- Department of Respiratory and Critical Care Medicine of Affiliated Yueqing Hospital, Wenzhou Medical University, Wenzhou, China
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5
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Jin G, Chang Y, Bao X. Generation of chimeric antigen receptor macrophages from human pluripotent stem cells to target glioblastoma. Immunooncol Technol 2023; 20:100409. [PMID: 38192614 PMCID: PMC10772262 DOI: 10.1016/j.iotech.2023.100409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Background Glioblastoma (GBM) is an aggressive brain tumor giving a poor prognosis with the current treatment options. The advent of chimeric antigen receptor (CAR) T-cell therapy revolutionized the field of immunotherapy and has provided a new set of therapeutic options for refractory blood cancers. In an effort to apply this therapeutic approach to solid tumors, various immune cell types and CAR constructs are being studied. Notably, macrophages have recently emerged as potential candidates for targeting solid tumors, attributed to their inherent tumor-infiltrating capacity and abundant presence in the tumor microenvironment. Materials and methods In this study, we developed a chemically defined differentiation protocol to generate macrophages from human pluripotent stem cells (hPSCs). A GBM-specific CAR was genetically incorporated into hPSCs to generate CAR hPSC-derived macrophages. Results The CAR hPSC-derived macrophages exhibited potent anticancer activity against GBM cells in vitro. Conclusion Our findings demonstrate the feasibility of generating functional CAR-macrophages from hPSCs for adoptive immunotherapy, thereby opening new avenues for the treatment of solid tumors, particularly GBM.
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Affiliation(s)
- G. Jin
- Davidson School of Chemical Engineering, Purdue University, West Lafayette
- Purdue University Center for Cancer Research, West Lafayette, USA
| | - Y. Chang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette
- Purdue University Center for Cancer Research, West Lafayette, USA
| | - X. Bao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette
- Purdue University Center for Cancer Research, West Lafayette, USA
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6
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Liu SY, Cao SL, Luo HY, Bao L, E J, Li B, Lan XM, Zhang GQ, Bao X, Zheng YL. TFP5, a Peptide Derived from Cdk5 Activator p35, Protects Pancreatic β Cells from Glucose Toxicity. Bull Exp Biol Med 2023; 176:19-25. [PMID: 38087140 DOI: 10.1007/s10517-023-05959-z] [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: 11/02/2022] [Indexed: 12/19/2023]
Abstract
We studied the effect of TFP5 on MIN6 cells (cultured mouse islet β cells) treated with different concentrations of glucose (5 or 25 mM). The results were verified in C57BL/6J mice (control; n=12) and db/db mice with type 2 diabetes mellitus (n=12). To synthesize TFP5, peptide p5 (a derivative of p35 protein, activator of cyclin-dependent kinase 5, Cdk5) was conjugated with a FITC tag at the N-terminus and an 11-amino acid TAT protein transduction domain at the C-terminus. TFP5 was employed to inhibit Cdk5 activity and then to evaluate its efficiency in treating experimental type 2 diabetes mellitus. TFP5 effectively inhibited the pathological hyperactivity of Cdk5, enhanced insulin secretion, and protected pancreatic β cells from apoptosis in vitro and in vivo. In addition, TFP5 inhibited inflammation in pancreatic islets by reducing the expression of inflammatory cytokines TGF-β1, TNFα, and IL-1β. These novel data indicates that TFP5 is a promising candidate for treatment of type 2 diabetes mellitus.
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Affiliation(s)
- S-Y Liu
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - S-L Cao
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - H-Y Luo
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - L Bao
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - J E
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
| | - B Li
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
| | - X-M Lan
- Department of Geriatrics, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
| | - G-Q Zhang
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - X Bao
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China
| | - Y-L Zheng
- Department of Nephrology, People's Hospital of Ningxia Hui Autonomous Region, Ningxia Medical University, Yinchuan, China.
- The Third Clinical Medical College of Ningxia Medical University, Yinchuan, China.
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7
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Zheng Y, Li X, Deng S, Zhao H, Ye Y, Zhang S, Huang X, Bai R, Zhuang L, Zhou Q, Li M, Su J, Li R, Bao X, Zeng L, Chen R, Zheng J, Lin D, He C, Zhang J, Zuo Z. CSTF2 mediated mRNA N 6-methyladenosine modification drives pancreatic ductal adenocarcinoma m 6A subtypes. Nat Commun 2023; 14:6334. [PMID: 37816727 PMCID: PMC10564946 DOI: 10.1038/s41467-023-41861-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 09/21/2023] [Indexed: 10/12/2023] Open
Abstract
N6-methyladenosine (m6A) modification of gene transcripts plays critical roles in cancer. Here we report transcriptomic m6A profiling in 98 tissue samples from 65 individuals with pancreatic ductal adenocarcinoma (PDAC). We identify 17,996 m6A peaks with 195 hyper-methylated and 93 hypo-methylated in PDAC compared with adjacent normal tissues. The differential m6A modifications distinguish two PDAC subtypes with different prognosis outcomes. The formation of the two subtypes is driven by a newly identified m6A regulator CSTF2 that co-transcriptionally regulates m6A installation through slowing the RNA Pol II elongation rate during gene transcription. We find that most of the CSTF2-regulated m6As have positive effects on the RNA level of host genes, and CSTF2-regulated m6As are mainly recognized by IGF2BP2, an m6A reader that stabilizes mRNAs. These results provide a promising PDAC subtyping strategy and potential therapeutic targets for precision medicine of PDAC.
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Affiliation(s)
- Yanfen Zheng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xingyang Li
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Shuang Deng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Hongzhe Zhao
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ying Ye
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Shaoping Zhang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xudong Huang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ruihong Bai
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Lisha Zhuang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Quanbo Zhou
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Mei Li
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jiachun Su
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Rui Li
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiaoqiong Bao
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Lingxing Zeng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Rufu Chen
- Guangdong Provincial People's Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jian Zheng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, China
- Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - Dongxin Lin
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China.
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Medicine, Nanjing Medical University, Nanjing, China.
- Department of Etiology and Carcinogenesis, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Chuan He
- Department of Chemistry, The University of Chicago, Chicago, IL, USA.
- Howard Hughes Medical Institute, The University of Chicago, Chicago, IL, USA.
- Department of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, IL, USA.
| | - Jialiang Zhang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Zhixiang Zuo
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China.
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8
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Wang Z, Zhao Z, Li W, Bao X, Liu T, Yang X. A Nomogram for Predicting Progression-free Survival in Patients with Endometrial Cancer. Clin Oncol (R Coll Radiol) 2023; 35:e516-e527. [PMID: 37230875 DOI: 10.1016/j.clon.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 02/25/2023] [Accepted: 05/05/2023] [Indexed: 05/27/2023]
Abstract
AIMS Endometrial cancer is one of the most widely known gynaecological malignancies that lacks a prognostic prediction model. This study aimed to develop a nomogram to predict progression-free survival (PFS) in patients with endometrial cancer. MATERIALS AND METHODS Information for endometrial cancer patients diagnosed and treated from 1 January 2005 to 30 June 2018 was collected. The Kaplan-Meier survival analysis and multivariate Cox regression analysis were carried out to determine the independent risk factors and a nomogram was constructed by R based on analytical factors. Internal and external validation were then carried out to predict the probability of 3- and 5-year PFS. RESULTS In total, 1020 patients with endometrial cancer were included in the study and the relationship between 25 factors and prognosis was analysed. Postmenopause (hazard ratio = 2.476, 95% confidence interval 1.023-5.994), lymph node metastasis (hazard ratio = 6.242, 95% confidence interval 2.815-13.843), lymphovascular space invasion (hazard ratio = 4.263, 95% confidence interval 1.802-10.087), histological type (hazard ratio = 2.713, 95% confidence interval 1.374-5.356), histological differentiation (hazard ratio = 2.601, 95% confidence interval 1.141-5.927) and parametrial involvement (hazard ratio = 3.596, 95% confidence interval 1.622-7.973) were found to be independent prognostic risk factors; these factors were selected to establish a nomogram. The consistency index for 3-year PFS were 0.88 (95% confidence interval 0.81-0.95) in the training cohort and 0.93 (95% confidence interval 0.87-0.99) in the verification set. The areas under the receiver operating characteristic curve for the 3- and 5-year PFS predictions are 0.891 and 0.842 in the training set; the same conclusion also appeared in the verification set [0.835 (3-year), 0.803(5-year)]. CONCLUSIONS This study established a prognostic nomogram for endometrial cancer that provides a more individualised and accurate estimation of PFS for patients, which will help physicians make follow-up strategies and risk stratification.
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Affiliation(s)
- Z Wang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - Z Zhao
- Department of Ultrasound, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, China
| | - W Li
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - X Bao
- Department of Obstetrics and Gynecology, Weifang People's Hospital, Weifang, China
| | - T Liu
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China
| | - X Yang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan, China.
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Wang H, Chang J, Zhang W, Fang Y, Li S, Fan Y, Jiang S, Yao Y, Deng K, Lu L, Bao X, Feng F, Wang R, Feng M. Radiomics model and clinical scale for the preoperative diagnosis of silent corticotroph adenomas. J Endocrinol Invest 2023:10.1007/s40618-023-02042-2. [PMID: 37020103 DOI: 10.1007/s40618-023-02042-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 02/12/2023] [Indexed: 04/07/2023]
Abstract
OBJECTIVE Silent corticotroph adenomas (SCAs) are a subtype of nonfunctioning pituitary adenomas that exhibit more aggressive behavior. However, rapid and accurate preoperative diagnostic methods are currently lacking. DESIGN The purpose of this study was to examine the differences between SCA and non-SCA features and to establish radiomics models and a clinical scale for rapid and accurate prediction. METHODS A total of 260 patients (72 SCAs vs. 188 NSCAs) with nonfunctioning adenomas from Peking Union Medical College Hospital were enrolled in the study as the internal dataset. Thirty-five patients (6 SCAs vs. 29 NSCAs) from Fuzhou General Hospital were enrolled as the external dataset. Radiomics models and an SCA scale to preoperatively diagnose SCAs were established based on MR images and clinical features. RESULTS There were more female patients (internal dataset: p < 0.001; external dataset: p = 0.028) and more multiple microcystic changes (internal dataset: p < 0.001; external dataset: p = 0.012) in the SCA group. MRI showed more invasiveness (higher Knosp grades, p ≤ 0.001). The radiomics model achieved AUCs of 0.931 and 0.937 in the internal and external datasets, respectively. The clinical scale achieved an AUC of 0.877 and a sensitivity of 0.952 in the internal dataset and an AUC of 0.899 and a sensitivity of 1.0 in the external dataset. CONCLUSIONS Based on clinical information and imaging characteristics, the constructed radiomics model achieved high preoperative diagnostic ability. The SCA scale achieved the purpose of rapidity and practicality while ensuring sensitivity, which is conducive to simplifying clinical work.
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Affiliation(s)
- H Wang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Neurospine center, China International Neuroscience Institute, Beijing, China
| | - J Chang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - W Zhang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
- Department of Thoracic Surgery, Peking University First Hospital, Beijing, China
| | - Y Fang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - S Li
- Department of Plastic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - Y Fan
- Department of Neurosurgery, Beijing Tiantan Hospital, Beijing Neurosurgical Institute, Capital Medical University, Beijing, China
| | - S Jiang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - Y Yao
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - K Deng
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - L Lu
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - X Bao
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China
| | - F Feng
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - R Wang
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China.
| | - M Feng
- Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China.
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Wang X, Lu C, Chen Y, Wang Q, Bao X, Zhang Z, Huang X. Resveratrol promotes bone mass in ovariectomized rats and the SIRT1 rs7896005 SNP is associated with bone mass in women during perimenopause and early postmenopause. Climacteric 2023; 26:25-33. [PMID: 35674253 DOI: 10.1080/13697137.2022.2073809] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVE This study aimed to examine the effects of SIRT1 agonist resveratrol on bone mass in ovariectomized (OVX) rats and the SIRT1 single-nucleotide polymorphism (SNP) rs7896005 on bone mass in women during menopause and early postmenopause. METHODS An animal experiment was conducted on rats that were sham-operated (SHAM), OVX or OVX and different administered doses of resveratrol. Serum markers and femur microstructure and staining were assessed. A cross-sectional study was conducted in women undergoing menopause. SIRT1 protein and SIRT1 SNP rs7896005 were evaluated. RESULTS OVX rats administered resveratrol, especially high doses, showed lower bone loss than OVX rats. Serum osteoprotegerin (OPG) and femur SIRT1, β-catenin and bone mineral density (BMD) were significantly increased, whereas receptor activator of NF-κB ligand (RANKL) was significantly decreased. Serum SIRT1 levels were significantly lower in women with low bone mass (p < 0.01). Women with the CA genotype of rs7896005 had lower bone mass than those with the CC genotype. The A allele showed a significant negative effect on bone loss risk (odds ratio = 3.48; p = 0.025). CONCLUSIONS Resveratrol stimulated SIRT1 expression and Wnt/β-catenin signaling to promote bone mass in rat femurs. Among women in perimenopause and early postmenopause, SIRT1 protected bone mass, and the A allele of SIRT1 rs7896005 was a risk factor for reduced bone mass.
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Affiliation(s)
- X Wang
- Department of Reproduction Center, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, China
| | - C Lu
- Department of Gynecology, The First People's Hospital of Xiaoshan District, Hangzhou, China
| | - Y Chen
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Q Wang
- Nanjing Medical University, Nanjing, China
| | - X Bao
- Zhejiang Chinese Medical University, Hangzhou, China
| | - Z Zhang
- Department of Reproductive Endocrinology Center, Hangzhou Women's Hospital, Hangzhou, China
| | - X Huang
- Department of Reproduction Center, Xuzhou Maternity and Child Health Care Hospital, Xuzhou, China
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Lloyd S, Bao X. 547 CDK9 Kinase Activation in Association with AFF1-SEC Initiate Epidermal Progenitor differentiation. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.563] [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: 11/19/2022]
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12
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Bao X, Zhang Y, Li H, Teng Y, Ma L, Chen Z, Luo X, Zheng J, Zhao A, Ren J, Zuo Z. RM2Target: a comprehensive database for targets of writers, erasers and readers of RNA modifications. Nucleic Acids Res 2022; 51:D269-D279. [PMID: 36300630 PMCID: PMC9825529 DOI: 10.1093/nar/gkac945] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/21/2022] [Accepted: 10/11/2022] [Indexed: 01/29/2023] Open
Abstract
RNA modification is a dynamic and reversible process regulated by a series of writers, erasers and readers (WERs). Abnormal changes of WERs will disrupt the RNA modification homeostasis of their target genes, leading to the dysregulation of RNA metabolisms such as RNA stability and translation, and consequently to diseases such as cancer. A public repository hosting the regulatory relationships between WERs and their target genes will help in understanding the roles of RNA modifications in various physiological and pathological conditions. Previously, we developed a database named 'm6A2Target' to host targets of WERs in m6A, one of the most prevalent RNA modifications in eukaryotic cells. To host all RNA modification (RM)-related WER-target associations, we hereby present an updated database, named 'RM2Target' (http://rm2target.canceromics.org/). In this update, RM2Target encompasses 1 619 653 WER-target associations for nine RNA modifications in human and mouse, including m6A, m6Am, m5C, m5U, m1A, m7G, pseudouridine, 2'-O-Me and A-to-I. Extensive annotations of target genes are available in RM2Target, including but not limited to basic gene information, RNA modifications, RNA-RNA/RNA-protein interactions and related diseases. Altogether, we expect that RM2Target will facilitate further downstream functional and mechanistic studies in the field of RNA modification research.
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Affiliation(s)
| | | | | | - Yuyan Teng
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Lixia Ma
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Zhihang Chen
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Xiaotong Luo
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Jian Zheng
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - An Zhao
- Correspondence may also be addressed to An Zhao.
| | - Jian Ren
- Correspondence may also be addressed to Jian Ren.
| | - Zhixiang Zuo
- To whom correspondence should be addressed. Tel: +86 02087342325;
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Lloyd S, Brady M, Rodriguez D, Leon D, McReynolds M, Kweon J, Neely A, Bao X. 460 Rapid activation of epidermal progenitor differentiation via CDK9 activity modulated by AFF1 and HEXIM1. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Droll S, Zhang B, Leon D, Bao X. 453 H2AZ1 and H2AZ2 regulate divergent programs in epidermal progenitor maintenance. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Li Q, Demir S, Bao X, Wagner A, Fan Y, Cairo S, Kappler R. Mebendazole inhibits growth of hepatoblastoma cells by cell cycle
arrest. KLINISCHE PADIATRIE 2022. [DOI: 10.1055/s-0042-1748714] [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: 10/18/2022]
Affiliation(s)
- Q Li
- Department of Pediatric Surgery, Dr. von Hauner Children’s
Hospital, LMU Munich, Germany
| | - S Demir
- Department of Pediatric Surgery, Dr. von Hauner Children’s
Hospital, LMU Munich, Germany
| | - X Bao
- Department of Medical Oncology, The First Affiliated Hospital, School
of Medicine, Zhejiang University, People’s Republic of
China
| | - A Wagner
- Department of Pediatric Surgery, Dr. von Hauner Children’s
Hospital, LMU Munich, Germany
| | - Y Fan
- Department of Pediatrics, Dr. von Hauner Children’s Hospital,
LMU Munich, Germany
| | | | - R Kappler
- Department of Pediatric Surgery, Dr. von Hauner Children’s
Hospital, LMU Munich, Germany
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Ding Y, Jiang J, Xu J, Chen Y, Zheng Y, Jiang W, Mao C, Jiang H, Bao X, Shen Y, Li X, Teng L, Xu N. Site-specific therapy in cancers of unknown primary site: a systematic review and meta-analysis. ESMO Open 2022; 7:100407. [PMID: 35248824 PMCID: PMC8897579 DOI: 10.1016/j.esmoop.2022.100407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 12/01/2022] Open
Abstract
Background Cancer of unknown primary site (CUP) is a term applied to characterize pathologically confirmed metastatic cancer with unknown primary tumor origin. It remains uncertain whether patients with CUP benefit from site-specific therapy guided by molecular profiling. Patients and methods A systematic search in PubMed, Web of Science, Embase, Cochrane Library, and ClinicalTrials.gov, and of conference abstracts from January 1976 to January 2021 was performed to identify studies investigating the efficacy of site-specific therapy on patients with CUP. The quality of included studies was evaluated using the Cochrane risk of bias tool and Newcastle–Ottawa scale. Eligible studies were weighted and pooled for meta-analysis. Hazard ratios (HRs) for overall survival (OS) and progression-free survival (PFS) were assessed to compare the efficacy of site-specific therapy with empiric therapy in patients with CUP. In addition, subgroup analyses were conducted. Results Five studies comprising 1114 patients were identified, of which 454 patients received site-specific therapy, and 660 patients received empiric therapy. Our meta-analysis revealed that site-specific therapy was not significantly associated with improved PFS [HR 0.93, 95% confidence interval (CI) 0.74-1.17, P = 0.534] and OS (HR 0.75, 95% CI 0.55-1.03, P = 0.069), compared with empiric therapy. However, during subgroup analysis significantly improved OS was associated with site-specific therapy in the high-accuracy predictive assay subgroup (HR 0.46, 95% CI 0.26-0.81, P = 0.008) compared with the low accuracy predictive assay subgroup (HR 0.93, 95% CI 0.75-1.15, P = 0.509). Furthermore, compared with patients with less responsive tumor types, more survival benefit from site-specific therapy was found in patients with more responsive tumors (HR 0.67, 95% CI 0.46-0.97, P = 0.037). Conclusions Our results suggest that site-specific therapy is not significantly associated with improved survival outcomes; however, it might benefit patients with CUP with responsive tumor types. Studies evaluating the role of site-specific therapy guided by molecular profiling in CUP provided contradictory results. Site-specific therapy is not significantly associated with improved survival outcomes in the overall CUP population. Molecularly defined site-specific therapy may improve OS only when high-accuracy assays assign CUP to responsive tumor types.
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Affiliation(s)
- Y Ding
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - J Jiang
- Department of Surgical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - J Xu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Chen
- Department of Surgical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Zheng
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - W Jiang
- Department of Colorectal Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou; China
| | - C Mao
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - H Jiang
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - X Bao
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Shen
- Centre of Clinical Laboratory, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou; China; Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou; China; Institute of Laboratory Medicine, Zhejiang University, Hangzhou; China
| | - X Li
- Department of Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - L Teng
- Department of Surgical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
| | - N Xu
- Department of Medical Oncology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.
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Bao X, Zhu K, Liu X, Chen Z, Luo Z, Zhao Q, Ren J, Zuo Z. MeRIPseqPipe: an integrated analysis pipeline for MeRIP-seq data based on Nextflow. Bioinformatics 2022; 38:2054-2056. [PMID: 35022687 DOI: 10.1093/bioinformatics/btac025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 11/15/2021] [Accepted: 01/10/2022] [Indexed: 02/03/2023] Open
Abstract
SUMMARY MeRIPseqPipe is an integrated and automatic pipeline that can provide users a friendly solution to perform in-depth mining of MeRIP-seq data. It integrates many functional analysis modules, range from basic processing to downstream analysis. All the processes are embedded in Nextflow with Docker support, which ensures high reproducibility and scalability of the analysis. MeRIPseqPipe is particularly suitable for analyzing a large number of samples at once with a simple command. The final output directory is structured based on each step and tool. And visualization reports containing various tables and plots are provided as HTML files. AVAILABILITY AND IMPLEMENTATION MeRIPseqPipe is freely available at https://github.com/canceromics/MeRIPseqPipe. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Xiaoqiong Bao
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Kaiyu Zhu
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Xuefei Liu
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Zhihang Chen
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Ziwei Luo
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Qi Zhao
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Jian Ren
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
| | - Zhixiang Zuo
- State Key Laboratory of Oncology in South China, Cancer Center, Collaborative Innovation Center for Cancer Medicine, School of Life Sciences, Sun Yat-sen University, Guangzhou 510060, China
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Liu X, Luo Z, Ren X, Chen Z, Bao X, Zheng J, Zuo Z. The Crosstalk Between Malignant Cells and Tumor-Promoting Immune Cells Relevant to Immunotherapy in Pancreatic Ductal Adenocarcinoma. Front Cell Dev Biol 2022; 9:821232. [PMID: 35087839 PMCID: PMC8787220 DOI: 10.3389/fcell.2021.821232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 12/21/2021] [Indexed: 12/14/2022] Open
Abstract
Background: Pancreatic ductal adenocarcinoma (PDAC) is dominated by an immunosuppressive microenvironment, which makes immune checkpoint blockade (ICB) often non-responsive. Understanding the mechanisms by which PDAC forms an immunosuppressive microenvironment is important for the development of new effective immunotherapy strategies. Methods: This study comprehensively evaluated the cell-cell communications between malignant cells and immune cells by integrative analyses of single-cell RNA sequencing data and bulk RNA sequencing data of PDAC. A Malignant-Immune cell crosstalk (MIT) score was constructed to predict survival and therapy response in PDAC patients. Immunological characteristics, enriched pathways, and mutations were evaluated in high- and low MIT groups. Results: We found that PDAC had high level of immune cell infiltrations, mainly were tumor-promoting immune cells. Frequent communication between malignant cells and tumor-promoting immune cells were observed. 15 ligand-receptor pairs between malignant cells and tumor-promoting immune cells were identified. We selected genes highly expressed on malignant cells to construct a Malignant-Immune Crosstalk (MIT) score. MIT score was positively correlated with tumor-promoting immune infiltrations. PDAC patients with high MIT score usually had a worse response to immune checkpoint blockade (ICB) immunotherapy. Conclusion: The ligand-receptor pairs identified in this study may provide potential targets for the development of new immunotherapy strategy. MIT score was established to measure tumor-promoting immunocyte infiltration. It can serve as a prognostic indicator for long-term survival of PDAC, and a predictor to ICB immunotherapy response.
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Affiliation(s)
- Xuefei Liu
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ziwei Luo
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xuechen Ren
- The Second Clinical Medical School, Lanzhou University, Lanzhou, China
| | - Zhihang Chen
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiaoqiong Bao
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jianghua Zheng
- Department of Laboratory Medicine, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Zhixiang Zuo
- State Key Laboratory of Oncology in Southern China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
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Chen X, Lloyd S, Bao X. 156 MYC-CPSF-HNRNPA3 cooperation promotes epidermal progenitor maintenance through modulating intronic transcription termination. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
The protozoan Entamoeba gingivalis colonizes the healthy oral mucosa with a prevalence of 15%. Colonization can be asymptomatic, and it is considered not pathogenic. However, it is able to invade lacerated oral mucosa, where it ingests fragments of live cells, suggesting pathogenous potential. Here, we characterized the transcriptomes of gingival cells after infection with E. gingivalis using RNA sequencing and observed pathogen interaction with the epithelial monolayer barrier by scanning electron microscopy. In epithelial and fibroblast cells, strongest differential expression showed gene set “chemokines and inflammatory molecules in myeloid cells” (area under the curve [AUC] = 0.9, effect size 5.15, adjusted P = 3.1 × 10−19) and “cell cycle and growth arrest” (AUC = 0.91, effect size = 4.56, adjusted P = 4.8 × 10−9), respectively. The most upregulated genes were TNF (fold change 430) and IL8 (fold change 359) in epithelial cells and ZN331 (fold change 18) in fibroblasts. We showed that E. gingivalis killed live epithelial cells by trogocytosis, demonstrating strong pathogenic potential.
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Affiliation(s)
- X Bao
- Charité-University Medicine Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Department of Periodontology, Oral Medicine and Oral Surgery, Berlin, Germany
| | - J Weiner
- Core Unit Bioinformatics, Berlin Institute of Health, Berlin, Germany
| | - O Meckes
- Eye of Science, Nicole Ottawa & Oliver Meckes GbR, Reutlingen, Germany
| | - H Dommisch
- Charité-University Medicine Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Department of Periodontology, Oral Medicine and Oral Surgery, Berlin, Germany
| | - A S Schaefer
- Charité-University Medicine Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Department of Periodontology, Oral Medicine and Oral Surgery, Berlin, Germany
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Bao X, Wang S, Housden R, Hajnal J, Rhode K. A Constant-Force End-Effector With Online Force Adjustment for Robotic Ultrasonography. IEEE Robot Autom Lett 2021; 6:2547-2554. [PMID: 33748416 PMCID: PMC7968128 DOI: 10.1109/lra.2021.3061329] [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: 10/15/2020] [Accepted: 02/06/2021] [Indexed: 11/18/2022]
Abstract
In this letter, we propose a novel constant-force end-effector (CFEE) to address current limitations in robotic ultrasonography. The CFEE uses a parallel, motor-spring-based solution to precisely generate constant operating forces over a wide range and enable the ultrasound (US) probe to adapt to the abdominal contours autonomously. A displacement measurement unit was developed to realize the acquisition of probe position and precise control of the operating force. Moreover, the operating force can be adjusted online to maintain safety and continuity of operation. Simulations and experiments were carried out to evaluate the performance. Results show that the proposed CFEE can provide constant forces of 4-12 N with displacements of 0-8 mm. The maximum relative error of force generation is 8.28%, and the accuracy and precision for displacement measurement are 0.29 mm and ±0.16 mm, respectively. Various operating forces can be adjusted online during the same operation. Ultrasound images acquired by the proposed CFEE are of equally good quality compared to a manual sonographer scan. The proposed CFEE would have potential further medical applications.
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Affiliation(s)
- X Bao
- School of Biomedical Engineering and Imaging Sciences, King's College LondonKing's Health Partners, St Thomas' HospitalSE1 7EHLondonU.K.,State Key Laboratory of Management and Control for Complex SystemsInstitute of Automation, Chinese Academy of SciencesBeijing100190China
| | - S Wang
- State Key Laboratory of Management and Control for Complex SystemsInstitute of Automation, Chinese Academy of SciencesBeijing100190China
| | - R Housden
- School of Biomedical Engineering and Imaging Sciences, King's College LondonKing's Health Partners, St Thomas' HospitalSE1 7EHLondonU.K
| | - J Hajnal
- School of Biomedical Engineering and Imaging Sciences, King's College LondonKing's Health Partners, St Thomas' HospitalSE1 7EHLondonU.K
| | - K Rhode
- School of Biomedical Engineering and Imaging Sciences, King's College LondonKing's Health Partners, St Thomas' HospitalSE1 7EHLondonU.K
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22
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Gu YQ, Xia Y, Zhang SM, Bao X, Wu HM, Bian SS, Huang LY, Meng G, Niu KJ. [Method of dietary nutritional status assessment and its application in cohort study of nutritional epidemiology]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1145-1150. [PMID: 32741185 DOI: 10.3760/cma.j.cn112338-20200110-00027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Minimizing the burden on study subjects and assessing the general dietary nutritional status as accurately as possible are the basis of a nutritional epidemiological cohort study in the general population. While introducing the main dietary nutrition assessment methods, this paper manly describes the basic contents and principles for the development of food frequency questionnaire, and briefly illustrates the problems and solutions for the development of area specific food frequency questionnaires by taking the example of Tianjin Chronic Low-grade Systemic Inflammation and Health (TCLSIH) cohort study. Finally, discusses preliminarily the necessity and possibility of developing a national food frequency questionnaire.
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Affiliation(s)
- Y Q Gu
- Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China; Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - Y Xia
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - S M Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - X Bao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - H M Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - S S Bian
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - L Y Huang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - G Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
| | - K J Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China
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23
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Roth-Carter Q, Godsel L, Koetsier J, Broussard J, Burks H, Fitz G, Huffine A, Amagai S, Lloyd S, Kweon J, Tsoi L, Swindell W, Urciuoli G, Missero C, Bao X, Gudjonsson J, Green K. 225 Desmoglein 1 deficiency in knockout mice impairs epidermal barrier formation and results in a psoriasis-like gene signature in E18.5 embryos. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
A metagenomics analysis showed a strongly increased frequency of the protozoan Entamoeba gingivalis in inflamed periodontal pockets, where it contributed the second-most abundant rRNA after human rRNA. This observation and the close biological relationship to Entamoeba histolytica, which causes inflammation and tissue destruction in the colon of predisposed individuals, raised our concern about its putative role in the pathogenesis of periodontitis. Histochemical staining of gingival epithelium inflamed from generalized severe chronic periodontitis visualized the presence of E. gingivalis in conjunction with abundant neutrophils. We showed that on disruption of the epithelial barrier, E. gingivalis invaded gingival tissue, where it moved and fed on host cells. We validated the frequency of E. gingivalis in 158 patients with periodontitis and healthy controls by polymerase chain reaction and microscopy. In the cases, we detected the parasite in 77% of inflamed periodontal sites and 22% of healthy sites; 15% of healthy oral cavities were colonized by E. gingivalis. In primary gingival epithelial cells, we demonstrated by quantitative real-time polymerase chain reaction that infection with E. gingivalis but not with the oral bacterial pathogen Porphyromonas gingivalis strongly upregulated the inflammatory cytokine IL8 (1,900 fold, P = 2 × 10–4) and the epithelial barrier gene MUC21 (8-fold, P = 7 × 10–4). In gingival fibroblasts, we showed upregulation of the collagenase MMP13 (11-fold, P = 3 × 10–4). Direct contact of E. gingivalis to gingival epithelial cells inhibited cell proliferation. We indicated the strong virulence potential of E. gingivalis and showed that the mechanisms of tissue invasion and destruction are similar to the colonic protozoan parasite E. histolytica. In conjunction with abundant colonization of inflamed periodontal sites and the known resistance of Entamoeba species to neutrophils, antimicrobial peptides, and various antibiotics, our results raise the awareness of this protozoan as a potential and, to date, underrated microbial driver of destructive forms of periodontitis.
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Affiliation(s)
- X. Bao
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Dept. of Periodontology and Synoptic Dentistry, Berlin, Germany
| | - R. Wiehe
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Dept. of Periodontology and Synoptic Dentistry, Berlin, Germany
| | - H. Dommisch
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Dept. of Periodontology and Synoptic Dentistry, Berlin, Germany
| | - A.S. Schaefer
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute for Dental and Craniofacial Sciences, Dept. of Periodontology and Synoptic Dentistry, Berlin, Germany
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Cao X, Gu Y, Fu J, Vu TQC, Zhang Q, Liu L, Meng G, Yao Z, Wu H, Bao X, Zhang S, Wang X, Sun S, Zhou M, Jia Q, Song K, Wu Y, Niu K. Excessive daytime sleepiness with snoring or witnessed apnea is associated with handgrip strength: a population-based study. QJM 2019; 112:847-853. [PMID: 31297519 DOI: 10.1093/qjmed/hcz178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/01/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Sarcopenia is emerging as an important public health problem, and evidences have determined that poor sleep is associated with muscle strength, but the potential effects of excessive daytime sleepiness (EDS), snoring and witnessed apnea on handgrip strength have not been evaluated. AIM We aimed to examine the association between EDS, snoring, witnessed apnea and muscle strength in an adult population. DESIGN Cross-sectional study. METHODS This cross-sectional study comprised 19 434 adults. Handgrip strength was measured using a handheld digital dynamometer. EDS was assessed by Epworth Sleepiness Scale, snoring and witnessed apnea during sleep were reported through simple yes/no questions. Analysis of covariance was carried out to determine the association between EDS with snoring or witnessed apnea and muscle strength. RESULTS The means (95% confidence interval) for average handgrip strength/body weight (kg/kg) across symptoms categories were 0.396 (0.333-0.472), 0.393 (0.330-0.467), 0.396 (0.333-0.471) and 0.386 (0.325-0.460) (P < 0.0001), respectively. Similar results were observed with maximal handgrip strength/body weight (kg/kg). CONCLUSIONS Self-reported EDS accompanied with snoring or apnea is associated with lowest handgrip strength, independently of confounding factors. Whether improvement of EDS, snoring and apnea, can ameliorate age-associated decline in muscle strength warrants further studies.
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Affiliation(s)
- X Cao
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Y Gu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - J Fu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - T Q C Vu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Q Zhang
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - L Liu
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - G Meng
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - Z Yao
- Tianjin Institute of Health and Environmental Medicine, 1 Dali Road, Heping District, Tianjin 300050, China
| | - H Wu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - X Bao
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - S Zhang
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - X Wang
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - S Sun
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - M Zhou
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - Q Jia
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - K Song
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
| | - Y Wu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
| | - K Niu
- From the Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
- Health Management Centre, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, 22 Qixiangtai Road, Heping District, Tianjin 300070, China
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Mehta S, Fiorelli R, Li J, Bao X, DeRogatis A, Pennington-Krygier C, Kim S, Sanai N. Phase 0 trial of ceritinib in brain metastases and recurrent glioblastoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz243.037] [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: 11/13/2022] Open
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27
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Sanai N, Tien AC, Li J, Bao X, DeRogatis A, Fujita Y, Pennington-Krygier C, Kim S, Mehta S. A phase 0/II clinical trial of a CDK4/6 inhibitor in aggressive meningioma patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz243.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Tien A, Li J, Bao X, DeRogatis A, Fujita Y, Pennington-Krygier C, Kim S, Mehta S, Sanai N. OS8.1 A phase 0/2 clinical trial of a CDK4/6 inhibitor in aggressive meningioma patients. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.051] [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: 11/15/2022] Open
Abstract
Abstract
BACKGROUND
New approaches are urgently needed for aggressive meningiomas, which remain largely incurable. Forkhead Box M1 (FOXM1) has been identified as a master transcription factor in aggressive meningiomas and Cyclin D-dependent Kinases (CDK) are positive regulators of cell-cycle entry, promoting tumorigenesis through FOXM1 activation. We evaluated the tumor pharmacokinetics (PK), tumor pharmacodynamics (PD), and preliminary clinical response of ribociclib, a selective CDK4/6-inhibitor, in aggressive meningioma patients.
MATERIAL AND METHODS
Eight aggressive WHO Grade II/III meningioma patients with intact RB expression were enrolled and administered oral ribociclib daily (900mg) for 5 days prior to tumor resection. Plasma, tumor, and cerebrospinal fluid (CSF) samples were collected at 2, 8, or 24 h after the last dose. Total and unbound drug concentrations were determined using a validated LC-MS/MS method. PD effects, including RB and FoxM1 phosphorylation, were compared to matched archival tissue. Patients with PK and PD responses in tumor tissue, defined as unbound ribociclib concentration > 5-fold in vitro IC50 (0.04µM) and >20% decrease in pRB levels, respectively, were enrolled into an exploratory Phase 2 cohort.
RESULTS
The median CSF concentration of ribociclib was 0.25 µM. In tumor tissue, the median unbound ribociclib concentration was 1.36 µM and the median unbound tumor-to-plasma ratio was 5.34. Suppression of G1-to-S phase was inferred in tumors with declining FoxM1 phosphorylation (50%), RB phosphorylation (38%), and cellular proliferation (75%). Four patients demonstrated concurrent PK and PD responses and were graduated to continuous ribociclib therapy. At one year, two of these patients (one Grade II and one Grade III) demonstrate partial responses per RANO criteria.
CONCLUSION
Ribociclib achieves pharmacologically-active concentrations in aggressive meningioma tissue. Target modulation was demonstrated by a decrease in FOXM1-mediated tumor proliferation. Further investigation of ribociclib as a therapeutic strategy for aggressive meningiomas is warranted.
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Affiliation(s)
- A Tien
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | - J Li
- Karmanos Cancer Institute, Detroit, MI, United States
| | - X Bao
- Karmanos Cancer Institute, Detroit, MI, United States
| | - A DeRogatis
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | - Y Fujita
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | | | - S Kim
- Karmanos Cancer Institute, Detroit, MI, United States
| | - S Mehta
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | - N Sanai
- Ivy Brain Tumor Center, Phoenix, AZ, United States
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Fiorelli R, Li J, Bao X, DeRogatis A, Pennington-Krygier C, Kim S, Mehta S, Sanai N. OS4.2 Phase 0 trial of Ceritinib in brain metastasis and recurrent glioblastoma. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.032] [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: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
Ceritinib is an orally bioavailable, small molecule inhibitor for ALK/IGFR1/FAK, which are highly expressed in glioblastoma and brain metastases. Preclinical and clinical data suggest that ceritinib has activity in central nervous system (CNS) malignancies, but to date there is no direct evidence in patients. This study assessed the pharmacokinetics (PK) and pharmacodynamics (PD) of ceritinib in recurrent glioblastoma and brain metastasis patients.
MATERIALS AND METHODS
Three brain metastasis and seven glioblastoma patients with high expression of pSTAT5b/pFAK/pIGFR1 were enrolled and treated with oral ceritinib daily (750 mg) for 10 days prior to tumor resection. Plasma, tumor, and cerebrospinal fluid (CSF) samples were collected at ~ 4 and 24 h following the last dose. Total and unbound drug concentrations were determined using LC-MS/MS. PD response was assessed by immunohistochemical analysis of pALK, pFAK, pIGFR1, and pIRS1 staining in treated tumor and matched archival tissues.
RESULTS
Ceritinib was highly bound to human plasma protein (median fraction unbound (Fu), 1.4%) and to brain tumor tissue (median Fu, 0.073% and 0.14% in enhancing and non-enhancing regions respectively). There was a large interindividual variability in drug CNS penetration, with the median unbound concentrations in enhancing, non-enhancing, and CSF of 0.040, 0.006, and 0.012 µM, respectively. The median unbound tumor-to-plasma ratio was 2.44 and 0.33 in enhancing and non-enhancing areas, respectively. In one patient with brain metastasis, drug binding to enhancing tumor was significantly lower (Fu, 1.62%), resulting in a higher unbound drug tumor concentration and CSF concentration as compared to those in glioblastoma patients. In all patients, no changes in PD markers were detected.
CONCLUSION
Ceritinib is highly bound to plasma proteins and tumor tissues. Unbound drug concentrations achieved in brain metastasis and glioblastoma are unlikely sufficient for target modulation.
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Affiliation(s)
- R Fiorelli
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | - J Li
- Karmanos Cancer Institute, Detroit, MI, United States
| | - X Bao
- Karmanos Cancer Institute, Detroit, MI, United States
| | - A DeRogatis
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | | | - S Kim
- Karmanos Cancer Institute, Detroit, MI, United States
| | - S Mehta
- Ivy Brain Tumor Center, Phoenix, AZ, United States
| | - N Sanai
- Ivy Brain Tumor Center, Phoenix, AZ, United States
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Chen X, Lloyd S, Kweon J, Gamalong G, Bao X. 280 Transcription termination modulates human epidermal proliferation and differentiation. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Hou M, Bao X, Luo F, Chen X, Liu L, Wu M. HMGA2 Modulates the TGFβ/Smad, TGFβ/ERK and Notch Signaling Pathways in Human Lens Epithelial-Mesenchymal Transition. Curr Mol Med 2019; 18:71-82. [PMID: 29974827 DOI: 10.2174/1566524018666180705104844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/24/2018] [Accepted: 07/02/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND OBJECTIVE Multiple signaling pathways coordinately promote epithelial-mesenchymal transition (EMT) in lens epithelial cells (LECs), where transforming growth factor beta (TGFβ)-mediated signaling plays a central role. But the mechanism of crosstalk among these pathways remains obscure. The objective of this study is to investigate the regulatory effect of the high mobility group protein A2 (HMGA2) on the signaling pathways in lens fibrosis. METHODS The human anterior capsulorhexis specimens were collected. The human SRA01/04 LEC line was cultured and treated with recombinant human TGFβ2 (5ng/ml). For inhibition of signaling pathways, a selective inhibitor SB431542, U0126 or DAPT was added to LECs respectively. The specific small interfering RNA (siRNA) were transfected to LECs for gene silence. The mRNAs expressions were measured by realtime PCR and the proteins expressions were determined by western blot and immunofluorescent staining. RESULTS HMGA2 and EMT markers α-smooth muscle actin (SMA), fibronectin (FN) and collagen type I (Col I) were overexpressed in human ASC specimens and TGFβ2 stimulated EMT in LECs. While blockage of EMT by a selective inhibitor of TGFβ/Smad, TGFβ/extracellular signal-regulated kinase (ERK) or Notch signaling pathway could significantly inhibited HMGA2 protein expression. And silence of HMGA2 by siRNA could significantly inhibit TGFβ2 induced expression of EMT markers including FN, Col I, collagen type IV (Col IV), key transcription factors Snail and Slug, and remarkably upregulate the epithelial markers E-cadherin and tight junction protein (ZO-1). In addition, silence of HMGA2 gene could abrogate TGFβ2 induced phosphorylation of Smad2, Smad3 as well as ERK1/2. Blockage of HMGA2 could also inhibit the upregulation of Jagged1, Notch2, and Notch3 induced by TGFβ2. CONCLUSION This study indicated that HMGA2 functions as a shared effector in TGFβ2- induced lens fibrosis, modulating the signaling network necessary for EMT in a positive feedback loop.
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Affiliation(s)
- M Hou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - X Bao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.,Department of Ophthalmology, Ophthalmology & Optometry Center, Peking University People's Hospital, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing 100044, China
| | - F Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - X Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - L Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - M Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
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Bao X, Liu H. Effect of intermittent hypoxia training for dizziness: A randomized controlled trial. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Bao X, Shao Y, Liu H. The effect of intraarticular injection of botulinum toxin type A, triamcinolone or saline plus rehabilitation exercise shoulder pain on patients with post-stroke. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ngo NS, Zhong N, Bao X. The effects of transboundary air pollution following major events in China on air quality in the U.S.: Evidence from Chinese New Year and sandstorms. J Environ Manage 2018; 212:169-175. [PMID: 29428651 DOI: 10.1016/j.jenvman.2018.01.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 10/09/2017] [Revised: 01/19/2018] [Accepted: 01/21/2018] [Indexed: 06/08/2023]
Abstract
Transboundary air pollution is a global environmental and public health problem including in the U.S., where pollution emissions from China, the largest emitter of anthropogenic air pollution in the world, can travel across the Pacific Ocean and reach places like California and Oregon. We examine the effects of transboundary air pollution following major events in China, specifically sandstorms, a natural-occurring source of air pollution, and Chinese New Year, a major 7-day holiday, on background air quality in the U.S. We focus on high elevation sites on the west coast between 2000 and 2013. We use regression analysis and a natural experiment to exploit the variation in the timing of these events in China, which are plausibly uncorrelated to other factors that affect air quality in China and the U.S. We find that sandstorms are associated with statistically significant increases in background coarse and fine particulate matter (PM) in the U.S., representing between 16 and 39% of average weekly PM levels. We also find Chinese New Year is associated with modest reductions in background air quality in the U.S., representing between 0.4 and 2.5% of PM levels. Findings are robust to different models and falsification tests. These results suggest that regression analysis could be a powerful tool to complement other, more widely used techniques in the environmental sciences that study this problem. This also has important implications for policymakers, who could track major sandstorms in China and prepare for possible increased foreign pollution emissions in the U.S.
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Affiliation(s)
- N S Ngo
- School of Planning, Public Policy, and Management, University of Oregon, USA.
| | - N Zhong
- Wang Yanan Institute for Studies in Economics, Xiamen University, China
| | - X Bao
- Wang Yanan Institute for Studies in Economics, Xiamen University, China
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Bao X, Tan J, Flyzik M, Ma X, Liu H, Liu H. Effect of therapeutic exercise on knee osteoarthritis after intra-articular injection of botulinum toxin type A, hyaluronate or saline: A randomized controlled trial. J Rehabil Med 2018; 50:534-541. [DOI: 10.2340/16501977-2340] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Torres J, Palmela C, Brito H, Bao X, Ruiqi H, Moura-Santos P, Pereira da Silva J, Oliveira A, Vieira C, Perez K, Itzkowitz SH, Colombel JF, Humbert L, Rainteau D, Cravo M, Rodrigues CM, Hu J. The gut microbiota, bile acids and their correlation in primary sclerosing cholangitis associated with inflammatory bowel disease. United European Gastroenterol J 2017; 6:112-122. [PMID: 29435321 DOI: 10.1177/2050640617708953] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 04/12/2017] [Indexed: 12/16/2022] Open
Abstract
Background Patients with primary sclerosing cholangitis associated with inflammatory bowel disease (PSC-IBD) have a very high risk of developing colorectal neoplasia. Alterations in the gut microbiota and/or gut bile acids could account for the increase in this risk. However, no studies have yet investigated the net result of cholestasis and a potentially altered bile acid pool interacting with a dysbiotic gut flora in the inflamed colon of PSC-IBD. Aim The aim of this study was to compare the gut microbiota and stool bile acid profiles, as well as and their correlation in patients with PSC-IBD and inflammatory bowel disease alone. Methods Thirty patients with extensive colitis (15 with concomitant primary sclerosing cholangitis) were prospectively recruited and fresh stool samples were collected. The microbiota composition in stool was profiled using bacterial 16S rRNA sequencing. Stool bile acids were assessed by high-performance liquid chromatography tandem mass spectrometry. Results The total stool bile acid pool was significantly reduced in PSC-IBD. Although no major differences were observed in the individual bile acid species in stool, their overall combination allowed a good separation between PSC-IBD and inflammatory bowel disease. Compared with inflammatory bowel disease alone, PSC-IBD patients demonstrated a different gut microbiota composition with enrichment in Ruminococcus and Fusobacterium genus compared with inflammatory bowel disease. At the operational taxonomic unit level major shifts were observed within the Firmicutes (73%) and Bacteroidetes phyla (17%). Specific microbiota-bile acid correlations were observed in PSC-IBD, where 12% of the operational taxonomic units strongly correlated with stool bile acids, compared with only 0.4% in non-PSC-IBD. Conclusions Patients with PSC-IBD had distinct microbiota and microbiota-stool bile acid correlations as compared with inflammatory bowel disease. Whether these changes are associated with, or may predispose to, an increased risk of colorectal neoplasia needs to be further clarified.
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Affiliation(s)
- J Torres
- Surgical Department, Hospital Beatriz Ângelo, Loures, Portugal.,Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - C Palmela
- Surgical Department, Hospital Beatriz Ângelo, Loures, Portugal
| | - H Brito
- Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Lisbon, Portugal
| | - X Bao
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, USA
| | - H Ruiqi
- Department of Health Evidence and Policy, Icahn School of Medicine at Mount Sinai, New York, USA
| | - P Moura-Santos
- Gastroenterology and Hepatology Division, Hospital de Santa Maria, Lisboa, Portugal
| | - J Pereira da Silva
- Department of Gastroenterology, Instituto Português de Oncologia de Lisboa, Portugal
| | - A Oliveira
- Department of Gastroenterology, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal
| | - C Vieira
- Department of Gastroenterology, Centro Hospitalar Barreiro Montijo, Portugal
| | - K Perez
- INSERM ERL1157, Sorbonne Université - UPMC Univ Paris 06, Paris, France
| | - S H Itzkowitz
- Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - J F Colombel
- Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - L Humbert
- INSERM ERL1157, Sorbonne Université - UPMC Univ Paris 06, Paris, France
| | - D Rainteau
- INSERM ERL1157, Sorbonne Université - UPMC Univ Paris 06, Paris, France
| | - M Cravo
- Surgical Department, Hospital Beatriz Ângelo, Loures, Portugal
| | - C M Rodrigues
- Research Institute for Medicines (iMed.ULisboa), Universidade de Lisboa, Lisbon, Portugal
| | - J Hu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, USA
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Bao X, Hou M, Peng R, Luo F, Wu M. Expression of Dominant Negative K6W-Ubiquitin in the Lens Epithelium via an Adenoviral Vector Delays Posterior Capsule Opacification in a Rabbit Model. Curr Mol Med 2017; 17:160-168. [PMID: 28429670 DOI: 10.2174/1566524017666170331163751] [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: 11/23/2016] [Revised: 12/31/1969] [Accepted: 03/25/2017] [Indexed: 11/22/2022]
Abstract
PURPOSE Ubiquitin is involved in cell proliferation and differentiation, and the objective of this study is to investigate the potential of dominant negative Ubiquitin (Ub) with a lysine to tryptophan mutation at the 6 position (K6W) through an adenoviral expression vector in the prevention of posterior capsule opacification (PCO) in a rabbit PCO model. METHODS Recombinant dominant negative K6W-Ub adenovirus (RAd-K6W-Ub) with green fluorescent protein (RAd-K6W-Ub/GFP) and RAd-GFP viruses (control) were generated with QBI-HEK 293A cells. New Zealand rabbits receiving lens phacoemulsification were given an intraoperative anterior chamber injection of the viruses. The images of anterior segment photography taken by a slit lamp biomicroscopy were analyzed by posterior capsule opacification manual software (POCOman) for PCO grading. The intraocular pressure (IOP) was detected with a non-contact tonometer (NCT). The expression of α-smooth muscle actin (α-SMA) was assessed by Western blotting. Cell migration ability in cultured rabbit's lens epithelial cells (LECs) was evaluated by scratch healing assay. RESULTS The expression of GFP and Ub in the lens epithelium was markedly upregulated after 48 hours vector injection. Eyes injected with RAd-K6W-Ub showed a significantly lower PCO degree compared with controls. Meanwhile, higher IOP and corneal edema was observed in groups with a higher RAd-K6W-Ub virus dosage. The expression of α-SMA was down-regulated in the RAd-K6W-Ub eyes as compared to controls at the 15th day after injection. Cell migration was inhibited by RAd-K6W-Ub infection. CONCLUSIONS RAd-K6W-Ub at an appropriate dosage could inhibit the proliferation of LECs and the formation of PCO in rabbit models. However, a higher dosage of Rad- K6W-Ub viral vector caused toxic effects to the surrounding tissues, such as corneal edema and high IOP.
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Affiliation(s)
- X Bao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060. China
| | - M Hou
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060. China
| | - R Peng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060. China
| | - F Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060. China
| | - M Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060. China
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Meng G, Yang H, Bao X, Zhang Q, Liu L, Wu H, Du H, Xia Y, Shi H, Guo X, Liu X, Li C, Su Q, Gu Y, Fang L, Yu F, Sun S, Wang X, Zhou M, Jia Q, Guo Q, Song K, Huang G, Wang G, Wu Y, Niu K. Increased serum ferritin levels are independently related to incidence of prediabetes in adult populations. Diabetes & Metabolism 2017; 43:146-153. [DOI: 10.1016/j.diabet.2016.07.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 07/10/2016] [Accepted: 07/14/2016] [Indexed: 12/12/2022]
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Sun HJ, Xiao JQ, Qiao QH, Bao X, Wu CB, Zhou Q. Chymotrypsin with sialendoscopy-assisted surgery for the treatment of chronic obstructive parotitis. Int J Oral Maxillofac Surg 2017; 46:877-882. [PMID: 28279602 DOI: 10.1016/j.ijom.2017.02.1267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 11/29/2016] [Accepted: 02/16/2017] [Indexed: 01/12/2023]
Abstract
Chronic obstructive parotitis (COP) is a common disease of the parotid gland. A total of 104 patients with COP were identified and randomized into a treatment group (52 cases) and a control group (52 cases). All patients underwent sialography and salivary gland scintigraphy (SGS) examinations before surgery. The patients in the treatment group received chymotrypsin combined with gentamicin via interventional sialendoscopy to irrigate the duct, and the control group received gentamicin alone. All patients were asked to record their pain on a visual analogue scale (VAS) before treatment and at 1 week, 2 weeks, 1 month, 3 months, and 6 months after surgery. The VAS score for pain intensity was decreased at 1 week post-treatment in both groups (P<0.05). Compared to the control group, the VAS score was lower in the treatment group at 1 week, 2 weeks, and 1 month post-treatment (P<0.05). The 6-month postoperative SGS results showed improved uptake and excretion in both groups (P<0.05). The treatment group exhibited higher scores for postoperative SGS excretion than the control group (P<0.05). The administration of chymotrypsin combined with gentamicin by sialendoscopy is effective for the treatment of non-stone-related COP and specifically improves the excretion function of the parotid gland.
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Affiliation(s)
- H-J Sun
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China
| | - J-Q Xiao
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China
| | - Q-H Qiao
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China
| | - X Bao
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China
| | - C-B Wu
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China
| | - Q Zhou
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University, China; Liaoning Institute of Dental Research, Shenyang, Liaoning Province, PR China.
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Zhang Q, Li J, Zhao Y, Bao X, Wei L, Wang J. Gene mutation analysis of 175 Chinese patients with early-onset epileptic encephalopathy. Clin Genet 2017; 91:717-724. [PMID: 27779742 DOI: 10.1111/cge.12901] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/20/2016] [Accepted: 10/20/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Q. Zhang
- Department of Pediatrics; Peking University First Hospital; Beijing China
| | - J. Li
- Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences; Peking University; Beijing China
| | - Y. Zhao
- Department of Pediatrics; Peking University First Hospital; Beijing China
| | - X. Bao
- Department of Pediatrics; Peking University First Hospital; Beijing China
| | - L. Wei
- Center for Bioinformatics, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences; Peking University; Beijing China
| | - J. Wang
- Department of Pediatrics; Peking University First Hospital; Beijing China
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Kato Y, Bao X, Macgrath S, Tabata K, Hori Y, Tachino S, Matijevici M, Funahashi Y, Matsui J. Lenvatinib mesilate (LEN) enhanced antitumor activity of a PD-1 blockade agent by potentiating Th1 immune response. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw362.02] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Bao X, Albu D, Huang K, Wu J, Twine N, Nomoto K, Woodall-Jappe M, Ataman O. Combination of a Novel EP4 Antagonist E7046 and Radiation Therapy Promotes Anti-tumor Immune Response and Tumor Rejection in Preclinical Tumor Models. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zhang W, Liu Z, Bao X, Qin Y, Taylor A, Shang F, Wu M. CHIP Knockdown Reduced Heat Shock Response and Protein Quality Control Capacity in Lens Epithelial Cells. Curr Mol Med 2016; 15:652-62. [PMID: 26321754 DOI: 10.2174/1566524015666150831131636] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 08/03/2015] [Accepted: 08/25/2015] [Indexed: 11/22/2022]
Abstract
Protein quality control (PQC) systems, including molecular chaperones and ubiquitin-proteasome pathway (UPP), plays an important role in maintaining intracellular protein homeostasis. Carboxyl terminus of Hsc70- interacting protein (CHIP) links the chaperone and UPPs, thus contributing to the repair or removal of damaged proteins. Over-expression of CHIP had previously been used to protect cells from environmental stress. In order to gain a more physiologic mechanism of the advantage conferred by CHIP, we induced a CHIP knockdown and monitored the ability of cells to cope with environmental stress. To knockdown CHIP, the human lens epithelial cell line HLE B3 was transfected with lentiviral particles that encode a CHIP short hairpin RNA (shRNA) or negative control lentiviral particles. Stable CHIP-knock down cells (KD) and negative control cells (NC) were selected with puromycin. After exposure to heat shock stress, there was no change observed in the expression of Hsp90. In contrast, Hsp70 levels increased significantly in NC cells but less so in KD cells. Hsp27 levels also increased after heat shock, but only in NC cells. Protein ubiquitination was reduced when CHIP was knocked down. CHIP knockdown reduced the ability to clear aggregation proteins. When same levels of aggregation-prone RFP-mutant crystallin fusion protein, RFP/V76D-γD, was expressed, there was ~9- fold more aggregates in KD cells as compared to that observed in NC cells. Furthermore, KD cells were more sensitive to toxicity of amino acid analog canavanine as compared to NC cells. Together, these data indicate that CHIP is required for PQC and that CHIP knockdown diminished cellular PQC capacity in lens cells.
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Affiliation(s)
| | | | | | | | | | | | - M Wu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 South Xianlie Road, Guangzhou 510060, China.
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Bao X, Xia Y, Zhang Q, Wu HM, Du HM, Liu L, Wang CJ, Shi HB, Guo XY, Liu X, Li CL, Su Q, Meng G, Yu B, Sun SM, Wang X, Zhou M, Jia QY, Song K, Niu KJ. Elevated serum complement C3 levels are related to the development of prediabetes in an adult population: the Tianjin Chronic Low-Grade Systematic Inflammation and Health Cohort Study. Diabet Med 2016; 33:446-53. [PMID: 26043071 DOI: 10.1111/dme.12827] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2015] [Indexed: 01/05/2023]
Abstract
AIMS To investigate whether serum complement C3 is related to the prevalence and incidence of prediabetes in an adult population. METHODS A cross-sectional (n = 10 206) and prospective cohort study (n = 3333), with a mean (range; 95% CI) follow-up of 2.63 (1-6; 2.58-2.68) years, was conducted in people recruited from the Health Management Centre of Tianjin Medical University General Hospital in Tianjin, China. Measurement of serum C3 concentration, blood fasting glucose, oral glucose tolerance, HbA1c and other potential confounding factors was performed at baseline and each year during the follow-up. Prediabetes was defined according to the criteria of the American Diabetes Association. Adjusted logistic and Cox proportional hazards regression models were used to assess the relationships between C3 quintiles and prediabetes. RESULTS The prevalence and incidence of prediabetes were 38.5% and 119 per 1000 person-years, respectively. In cross-sectional analysis, after adjustment for potential confounders, the odds ratios of prediabetes for increasing quintiles of C3 were 1.00 (reference), 1.32 (95% CI 1.14-1.53), 1.37 (95% CI 1.18-1.59), 1.75 (95% CI 1.51-2.03), 2.25 (95% CI 1.93-2.62; P for trend < 0.0001). In the cohort analysis, the multiple-adjusted hazard ratio of prediabetes in the highest quintile of baseline C3 was 1.43 (95% CI 1.15, 1.78; P for trend < 0.001), when compared with the lowest quintile. CONCLUSIONS These findings indicate that elevated serum C3 levels are significantly related to an increased risk of developing prediabetes in an adult population, suggesting that C3 can be used as a biomarker in high-risk individuals to improve primary prevention of prediabetes and diabetes.
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Affiliation(s)
- X Bao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Y Xia
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Q Zhang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - H M Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - H M Du
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - L Liu
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - C J Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - H B Shi
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - X Y Guo
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - X Liu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - C L Li
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Q Su
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - G Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China
| | - B Yu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
- Institute of Psychology, Tianjin Medical University, Tianjin, China
| | - S M Sun
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - X Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - M Zhou
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - Q Y Jia
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - K Song
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
| | - K J Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China
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Wu H, Wei M, Zhang Q, Du H, Xia Y, Liu L, Wang C, Shi H, Guo X, Liu X, Li C, Bao X, Su Q, Gu Y, Fang L, Yang H, Yu F, Sun S, Wang X, Zhou M, Jia Q, Zhao H, Song K, Niu K. Consumption of Chilies, but not Sweet Peppers, Is Positively Related to Handgrip Strength in an Adult Population. J Nutr Health Aging 2016; 20:546-52. [PMID: 27102794 DOI: 10.1007/s12603-015-0628-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Chili consumption may have a beneficial effect on muscle strength in the general population. The aim of this study was to investigate the relationship between frequency of chili consumption and handgrip strength in adults. DESIGN Population-based cross-sectional study. SETTING This study used baseline data from the Tianjin Chronic Low-grade Systemic Inflammation and Health Cohort Study. PARTICIPANTS A total of 3 717 subjects were recruited to the study. Frequency of chili consumption during the previous month was assessed using a valid self-administered food frequency questionnaire. Analysis of covariance was used to examine the relationship between muscle strength and frequency of chili consumption. Handgrip strength was measured using a handheld digital dynamometer. RESULTS After adjustment for potential confounding factors, significant relationships were observed between different categories of chili consumption and handgrip strength in males, the means (95% confidence interval) for handgrip strength across chili consumption categories were 44.7 (42.1, 47.2) for < one time/week; 45.5 (42.9, 48.1) for one time/week; and 45.8 (43.3, 48.4) for ≥ 2-3 times/week (P for trend < 0.01). Similar results were not observed with sweet pepper consumption. CONCLUSIONS This study reveals a positive correlation between frequency of chili consumption and muscle strength in adult males. Further studies are necessary in order to determine whether there is a causal relationship between chili consumption frequency and muscle strength.
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Affiliation(s)
- H Wu
- Kaijun Niu, MD, PhD, Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, 22 Qixiangtai Road, Heping District, Tianjin 300070, China, Tel: +86-22-83336613, E-mail address: or
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He CC, Kimutai B, Bao X, Hamlow L, Zhu Y, Strobehn SF, Gao J, Berden G, Oomens J, Chow CS, Rodgers MT. Evaluation of Hybrid Theoretical Approaches for Structural Determination of a Glycine-Linked Cisplatin Derivative via Infrared Multiple Photon Dissociation (IRMPD) Action Spectroscopy. J Phys Chem A 2015; 119:10980-7. [DOI: 10.1021/acs.jpca.5b08181] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- C. C. He
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - B. Kimutai
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - X. Bao
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - L. Hamlow
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Y. Zhu
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - S. F. Strobehn
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - J. Gao
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - G. Berden
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - J. Oomens
- FELIX
Laboratory, Institute for Molecules and Materials, Radboud University, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
- van’t
Hoff Institute for Molecular Sciences, University of Amsterdam, 1090 GD Amsterdam, The Netherlands
| | - C. S. Chow
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - M. T. Rodgers
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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Abstract
Human metapneumovirus (hMPV) and respiratory syncytial virus, its close family member, are two major causes of lower respiratory tract infection in the paediatric population. hMPV is also a common cause of worldwide morbidity and mortality in immunocompromised patients and older adults. Repeated infections occur often, demonstrating a heavy medical burden. However, there is currently no hMPV-specific prevention treatment. This review focuses on the current literature on hMPV vaccine development. We believe that a better understanding of the role(s) of viral proteins in host responses might lead to efficient prophylactic vaccine development.
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Affiliation(s)
- J Ren
- 1Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, USA
| | - T Phan
- 1Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, USA
| | - X Bao
- 2Institute for Translational Science, University of Texas Medical Branch, Galveston, TX, USA 3Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX, USA 1Department of Pediatrics, University of Texas Medical Branch, Galveston, TX, USA
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Jin Q, Lou Y, Chen H, Li T, Bao X, Liu Q, He X. Lower free testosterone level is correlated with left ventricular diastolic dysfunction in asymptomatic middle-aged men with type 2 diabetes mellitus. Int J Clin Pract 2014; 68:1454-61. [PMID: 25040479 DOI: 10.1111/ijcp.12481] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
AIMS Low testosterone (T) level is associated with cardiovascular risk factors. However, the relationship between T level and heart function in asymptomatic men with type 2 diabetes mellitus (T2DM) is unknown. METHODS A total of 325 men were recruited who had no history, symptoms, or signs of heart disease. RESULTS T2DM had significantly lower free T (FT) levels than those with normal glucose metabolism (NGM) (428 ± 38 pmol/l vs. 444 ± 38 pmol/l, p = 0.0002), and had an increased risk of LVDD (66.1% vs. 31.8%). There was a significant difference in FT level between subjects with and without LVDD among those with T2DM (421 ± 37 pmol/l vs. 442 ± 40 pmol/l, p = 0.0007), but not among those with NGM (439 ± 37 pmol/l vs. 447 ± 39 pmol/l, p = 0.247) or in the group overall (426 ± 38 pmol/l vs. 445 ± 38 pmol/l, p = 0.156). Lower FT level was significantly associated with LVDD [univariate odds ratio (OR) = 0.63, p = 0.032; multivariate OR = 0.71, p = 0.039]. Receiver operating characteristic curve analysis of the usefulness of FT level for predicting LVDD showed an area under the curve (AUC) of 0.85 for T2DM (p < 0.001) and 0.66 for NGM (p < 0.05). FT level had a high predictive value for LVDD in T2DM (83% for FT < 414 pmol/l), but a low predictive value in NGM (61% for FT < 423 pmol/l). Comparison of the AUCs showed that FT level was more strongly correlated with LVDD in T2DM than in NGM. CONCLUSIONS Lower FT level is correlated with LVDD in asymptomatic middle-aged men with T2DM.
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Affiliation(s)
- Q Jin
- Department of Geriatrics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
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Baker C, Lu Y, Song J, Bao X. Incoherent optical frequency domain reflectometry based on a Kerr phase-interrogator. Opt Express 2014; 22:15370-15375. [PMID: 24977797 DOI: 10.1364/oe.22.015370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a novel approach for incoherent optical frequency-domain reflectometry based on a frequency-swept sinusoidal optical signal and a Kerr phase-interrogator. The novel approach eliminates dependence on the laser coherence-length allowing for long-range operation. Long-range detection of reflection points as far as 151 km at a spatial-resolution of 11.2 cm is experimentally demonstrated.
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Bao X, Wang M, Zhou H, Wu X, Yang L, Xu C, Yuan X, Zhang J, Li L, Wu D, He J. Characterization of Killer cell immunoglobulin-like receptor (KIR) genotypes and haplotypes in Chinese Han population. ACTA ACUST UNITED AC 2014; 82:327-37. [PMID: 24131019 DOI: 10.1111/tan.12211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Revised: 07/30/2013] [Accepted: 09/07/2013] [Indexed: 11/29/2022]
Abstract
We performed Killer cell immunoglobulin-like receptor (KIR) genotyping on 1271 individuals of Chinese Han origin including 102 families and 965 unrelated individuals. The families (with one child and both parents) were subjected for haplotype analysis. Forty-one different genotypes were identified. The frequencies of the KIR genotypes found in the family panel were confirmed by those found in the unrelated panel. The family study showed segregation of one A haplotype and at least 15 unique B haplotypes. The most commonly observed haplotypes in group B were B1, B2, and B3, present at a frequency of 10.05%, 6.62%, and 4.90%, respectively. On the basis of the combination of KIR genes, six centromeric and seven telomeric gene motifs have been identified. Motif cB02 was the most frequent haplotype B specific centromeric segment while tB01 was the most frequent haplotype B specific telomeric segment. The distinct distribution of KIR haplotypes in each population may reflect the history of directional and balancing selection of different races. The gene combinations of group A and B1/B2/B3 haplotype were the most frequent genotypes named as Bx1, Bx2, and Bx3, present at a frequency of 13.72%, 7.35%, and 4.41% in the family panel, and at a frequency of 15.86%, 10.15%, and 5.80% in the unrelated panel, respectively. Overall, this study showed the diversity of KIR haplotypes and genotypes in Chinese Han population and developed a criterion for distinguish KIR haplotypes/genotypes for the population. KIR genotyping and haplotype analysis should be useful for selection of the most optimum donor grafts with favorable KIR gene content for transplants.
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Affiliation(s)
- X Bao
- Department of HLA Laboratory, Jiangsu Institute of Hematology, First Affiliated Hospital of Soochow University, Suzhou, 215007, Jiangsu, P.R. China
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