1
|
Li XY, Qin KR, Liu YH, Pang M, Huo YK, Yu BF, Wang HL. A Microarray Study on the Expression of ANKRD49 in Lung Squamous Cell Carcinoma and Its Clinicopathologic Significance. Appl Immunohistochem Mol Morphol 2022; 30:418-424. [PMID: 35639405 DOI: 10.1097/pai.0000000000001039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 05/04/2022] [Indexed: 11/25/2022]
Abstract
Lung squamous cell carcinoma (LUSC) is associated with poor clinical outcomes and identifying novel biomarkers that are involved in the progression of LUSC is important for prognosis and targeted treatment. Herein, ankyrin repeat domain 49 (ANKRD49) protein in LUSC versus paired noncancerous lung tissues was tested and its clinical significance was evaluated through χ 2 test, log-rank test, and Cox proportional hazards model. The results showed the ANKRD49 protein in LUSC was elevated and correlated with the tumor-node-metastasis stage, lymph node metastasis, distal metastasis, and differentiation. Patients with higher ANKRD49 had lower overall survival rate and higher ANKRD49 expression in lung tissues may be used as an independent prognostic marker for LUSC patients.
Collapse
Affiliation(s)
- Xin-Yang Li
- School of Basic Medicine, Basic Medical Sciences Center
| | - Ke-Ru Qin
- School of Basic Medicine, Basic Medical Sciences Center
| | - Yue-Hua Liu
- School of Basic Medicine, Basic Medical Sciences Center
| | - Min Pang
- Department of Pulmonary and Critical Care Medicine, the First Hospital, Shanxi Province Key Laboratory of Respiratory Disease, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yun-Kui Huo
- Department of Cardiothoracic Surgery, the First Hospital
| | - Bao-Feng Yu
- School of Basic Medicine, Basic Medical Sciences Center
| | - Hai-Long Wang
- School of Basic Medicine, Basic Medical Sciences Center
| |
Collapse
|
2
|
Liu YH, Yuan M, Xu BX, Gao R, You YJ, Wang ZX, Zhang YC, Guo M, Chen ZY, Yu BF, Wang QW, Wang HL, Pang M. ANKRD49 promotes the invasion and metastasis of lung adenocarcinoma via a P38/ATF-2 signalling pathway. J Cell Mol Med 2022; 26:4401-4415. [PMID: 35775112 PMCID: PMC9357638 DOI: 10.1111/jcmm.17464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 12/28/2022] Open
Abstract
Lung adenocarcinoma (LUAD) is the most challenging neoplasm to treat in clinical practice. Ankyrin repeat domain 49 protein (ANKRD49) is highly expressed in several carcinomas; however, its pattern of expression and role in LUAD are not known. Tissue microarrays, immunohistochemistry, χ2 test, Spearman correlation analysis, Kaplan–Meier, log‐rank test, and Cox's proportional hazard model were used to analyse the clinical cases. The effect of ANKRD49 on the LUAD was investigated using CCK‐8, clonal formation, would healing, transwell assays, and nude mice experiment. Expressions of ANKRD49 and its associated downstream protein molecules were verified by real‐time PCR, Western blot, immunohistochemistry, and/or immunofluorescence analyses. ANKRD49 expression was highly elevated in LUAD. The survival rate and Cox's modelling analysis indicated that there may be an independent prognostic indicator for LUAD patients. We also found that ANKRD49 promoted the invasion and migration in both in in vitro and in vivo assays, through upregulating matrix metalloproteinase (MMP)‐2 and MMP‐9 activities via the P38/ATF‐2 signalling pathway Our findings suggest that ANKRD49 is a latent biomarker for evaluating LUAD prognosis and promotes the metastasis of A549 cells via upregulation of MMP‐2 and MMP‐9 in a P38/ATF‐2 pathway‐dependent manner.
Collapse
Affiliation(s)
- Yue-Hua Liu
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China.,Xi'an Jiaotong University-Affiliated Honghui Hospital, Xi'an, China
| | - Meng Yuan
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Bai-Xue Xu
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Rui Gao
- Department of Pulmonary and Critical Care Medicine, The First Hospital, Shanxi Medical University; Shanxi Province Key Laboratory of Respiratory Disease, Taiyuan, China
| | - Yu-Jie You
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Zhi-Xin Wang
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Yong-Cai Zhang
- Department of Cardiothoracic Surgery, The First Hospital, Shanxi Medical University, Taiyuan, China
| | - Min Guo
- Laboratory of Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, China
| | - Zhao-Yang Chen
- Laboratory of Animal Center, Shanxi Key Laboratory of Experimental Animal Science and Animal Model of Human Disease, Shanxi Medical University, Taiyuan, China
| | - Bao-Feng Yu
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Qi-Wei Wang
- Class ZT011907, The First Clinical Medical College, Shanxi Medical University, Jinzhong, China
| | - Hai-Long Wang
- School of Basic Medicine, Basic Medical Science Center, Shanxi Medical University, Jinzhong, China
| | - Min Pang
- Department of Pulmonary and Critical Care Medicine, The First Hospital, Shanxi Medical University; Shanxi Province Key Laboratory of Respiratory Disease, Taiyuan, China
| |
Collapse
|
3
|
Zhao XH, Dai XC, Zhou YN, Zhang HX, Cui XH, Zhai X, Yu BF, Song ZL. A sensitive fluorescence biosensor based on metal ion-mediated DNAzyme activity for amplified detection of acetylcholinesterase. Analyst 2022; 147:2575-2581. [DOI: 10.1039/d2an00414c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this paper, we developed an amplified fluorescence biosensor for acetylcholinesterase (AChE) activity detection by taking advantage of the mercury ion-mediated Mgzyme (Mg2+-dependent DNAzyme) activity.
Collapse
Affiliation(s)
- Xu-Hua Zhao
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Xiao-Chun Dai
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Ya-Nan Zhou
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Han-Xiao Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Xiao-Hua Cui
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Xiang Zhai
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, P. R. China
| | - Zhi-Ling Song
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| |
Collapse
|
4
|
Yu BF, Yin HW, Qiu YQ, Shen YD, Gu YD, Xu WD. Designing a 20 mm incision to protect the dorsal branch of the ulnar nerve during arthroscopic repair of triangular fibrocartilage complex injuries: Cadaver study and preliminary clinical results. Hand Surg Rehabil 2019; 38:381-385. [PMID: 31589935 DOI: 10.1016/j.hansur.2019.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 08/02/2019] [Accepted: 09/14/2019] [Indexed: 11/17/2022]
Abstract
The ulnar-sided approach for arthroscopic peripheral triangular fibrocartilage complex (TFCC) repair may be associated with injury to the dorsal branch of the ulnar nerve (DBUN). The goal of this study was to develop a small incision to help minimize DBUN injury. Ten cadaveric upper limbs were used to measure the anatomic parameters of the DBUN. Based on these measured anatomical relationships, a 20 mm longitudinal incision with the ulnar styloid process as the midpoint was designed to explore and protect the DBUN. Three additional cadaveric upper limbs were used to test the feasibility of this method. Then this method was applied in 15 patients with TFCC injury (IB type). In 10 cadavers, the DBUN was located volar to the ulnar styloid process. The mean linear distance between the DBUN and the ulnar styloid process was 8.04 mm (range: 7.02-8.82mm) in the transverse-volar direction and 13.78 mm (range: 11.06-16.02mm) in the longitudinal-distal volar direction. In three additional cadavers, the DBUN was successfully explored and retracted with this incision, creating a safer space for passing sutures and tying knots. This modified method was used successfully in 15 patients, and the DBUN was protected during surgery. There were no complications, and most importantly, no injuries to the DBUN at the 6-month follow-up visit. Therefore, we recommend that a 20 mm longitudinal incision with the ulnar styloid process as the midpoint be made prior to passing sutures during the arthroscopic repair of TFCC tears to avoid injuring the various branches of the DBUN.
Collapse
Affiliation(s)
- B F Yu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - H W Yin
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Y Q Qiu
- Department of Hand and Upper Extremity Surgery, Jing'an District Center Hospital, Shanghai, China; Shanghai Clinical Medical Center for Limb Function Reconstruction, Shanghai, China
| | - Y D Shen
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Y D Gu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China; Department of Hand and Upper Extremity Surgery, Jing'an District Center Hospital, Shanghai, China; Shanghai Clinical Medical Center for Limb Function Reconstruction, Shanghai, China; Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; Priority Among Priorities of Shanghai Municipal Clinical Medicine Center, Shanghai, China
| | - W D Xu
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai, China; Department of Hand and Upper Extremity Surgery, Jing'an District Center Hospital, Shanghai, China; Shanghai Clinical Medical Center for Limb Function Reconstruction, Shanghai, China; Shanghai Key Laboratory of Peripheral Nerve and Microsurgery, Shanghai, China; National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China; Priority Among Priorities of Shanghai Municipal Clinical Medicine Center, Shanghai, China.
| |
Collapse
|
5
|
Liu C, Wang X, Tian JB, Ma PY, Meng FX, Zhang Q, Yu BF, Guo R, Liu ZZ, Wang HL, Xie J, Cheng NL, Wang JH, Niu B, Sun GQ. Construction of a cDNA library and preliminary analysis of the expressed sequence tags of the earthworm Eisenia fetida (Savigny, 1826). Mol Med Rep 2019; 19:2537-2550. [PMID: 30720084 PMCID: PMC6423580 DOI: 10.3892/mmr.2019.9938] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 01/11/2019] [Indexed: 11/25/2022] Open
Abstract
Earthworms are useful indicator organisms of soil health and Eisenia fetida have been extensively used as test organisms in ecotoxicological studies. In order to gain insight into the gene expression profiles associated with physiological functions of earthworms, a full-length enriched cDNA library of the Eisenia fetida genome was successfully constructed using Switching Mechanism at 5′End of RNA Template technology. Construction of a cDNA library and analysis of Expressed Sequence Tags (ESTs) are efficient approaches for collecting genomic information and identifying genes important for a given biological process. Furthermore, analysis of the expression abundance of ESTs was performed with the aim of providing genetic and transcriptomic information on the development and regenerative process of earthworms. Phrep and Crossmatch were used to process EST data and a total of 1,140 high-quality EST sequences were determined by sequencing random cDNA clones from the library. Clustering analysis of sequences revealed a total of 593 unique sequences including 225 contiguous and 368 singleton sequences. Basic Local Alignment Search Tool analysis against the Kyoto Encyclopedia of Genes and Genomes database resulted in 593 significant hits (P-value <1×10−8), of which 168 were annotated through Gene Ontology analysis. The STRING database was used to determine relationships among the 168 ESTs, identifying associated genes involved in protein-protein interactions and gene expression regulation. Based on nucleic acid and protein sequence homology, the mutual relationships between 287 genes could be obtained, which identified a portion of the ESTs as known genes. The present study reports on the construction of a high-quality cDNA library representative of adult earthworms, on a preliminary analysis of ESTs and on a putative functional analysis of ESTs. The present study is expected to enhance our understanding of the molecular basis underlying the biological development of earthworms.
Collapse
Affiliation(s)
- Chang Liu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xuan Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jiu-Bo Tian
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Pei-Yuan Ma
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Fan-Xiu Meng
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Qi Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui Guo
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Zhi-Zhen Liu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Long Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Niu-Liang Cheng
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jian-Hua Wang
- Department of Biotechnology, Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing 100020, P.R. China
| | - Bo Niu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Gong-Qin Sun
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
6
|
Zhao XH, Zhang LZ, Zhao SY, Cui XH, Gong L, Zhao R, Yu BF, Xie J. Silver-ion-mediated Mg2+-dependent DNAzyme activity for amplified fluorescence detection of cysteine. Analyst 2019; 144:1982-1987. [DOI: 10.1039/c8an02308e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Schematic illustration of a DNAzyme-based fluorescent biosensor for amplified Cys detection.
Collapse
Affiliation(s)
- Xu-Hua Zhao
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Li-Zhuan Zhang
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Su-Ya Zhao
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Xiao-Hua Cui
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Liang Gong
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices
- College of Life Sciences and Chemistry
- Hunan University of Technology
- Zhuzhou 412007
- China
| | - Rong Zhao
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology
- Shanxi Medical University
- Taiyuan 030001
- P. R. China
| |
Collapse
|
7
|
Pang M, Liu HY, Li T, Wang D, Hu XY, Zhang XR, Yu BF, Guo R, Wang HL. Recombinant club cell protein 16 (CC16) ameliorates cigarette smoke‑induced lung inflammation in a murine disease model of COPD. Mol Med Rep 2018; 18:2198-2206. [PMID: 29956762 PMCID: PMC6072201 DOI: 10.3892/mmr.2018.9216] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 06/21/2018] [Indexed: 11/21/2022] Open
Abstract
Club cell protein (CC16) is expressed primarily by club cells possesses anti-inflammatory properties and is located in the bronchiolar epithelium. Previous studies have demonstrated that CC16 deficiency is associated with the progression of chronic obstructive pulmonary disease (COPD). In the present study, the therapeutic effects of recombinant rat CC16 protein in mice with COPD were examined and the underlying mechanisms investigated. A total of 30 adult male C57/BL6 mice were randomly divided into three groups (10 mice/group). A mouse COPD model was generated by exposing 20 mice to cigarette smoke (CS) for 24 weeks. A total of 10 mice were treated intranasally with rCC16 (2.5 µg/g body weight) and control mice were exposed to normal room air. Results indicated that rCC16 treatment ameliorated pathological damage in the lungs and reduced the production of tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-8, which were induced by CS exposure. After rCC16 administration, endogenous CC16 was upregulated and the body weight of COPD mice was increased, whereas the opposite was observed in CS-exposed mice. Additionally, rCC16 treatment inhibited the DNA binding of NF-κB/p65 in lung tissues and reduced nuclear translocation of NF-κB/p65 in BALF and epithelial cells. Moreover, rCC16 treatment lead to a decrease in the total number of BALF cells, including macrophages, which was elevated in COPD mice. In conclusion, the present results demonstrate that rCC16 has therapeutic effects on COPD by downregulating pro-inflammatory factors via the NF-κB pathway.
Collapse
Affiliation(s)
- Min Pang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hong-Yan Liu
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Ting Li
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Dan Wang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xiao-Yun Hu
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin-Ri Zhang
- Department of Respiratory Medicine, The First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bao-Feng Yu
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui Guo
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Long Wang
- School of Basic Medicine; Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
8
|
Abstract
The present study aimed to investigate the effects of intestinal endotoxemia (IETM) in a rat model of aluminum neurotoxicity established by D-galactose and aluminum trichloride (AlCl3). Adult Wistar rats were administered D‑galactose and AlCl3 to create the aluminum neurotoxicity model. The learning and memory abilities of the rats were subsequently observed using a Morris water maze test and the serum levels of lipopolysaccharide (LPS), tumor necrosis factor (TNF)‑α, interleukin (IL)‑1, diamine oxidase (DAO), glutamine (Gln) and glutaminase were measured. The expression of S‑100β in the serum was detected using an enzyme‑linked immunosorbent assay. The expression levels of the amyloid β‑protein (Aβ) precursor (APP), presenilin 1 (PS1), β‑site APP‑cleaving enzyme (BACE), zona occludens protein (ZO)‑1 and Aβ 1‑40 in the brain of rats were detected via reverse‑transcription polymerase chain reaction, western blotting and immunohistochemistry. The levels of LPS, TNF‑α, IL‑1, DAO, Gln and S‑100β in serum and the mRNA and protein expression levels of APP, PS1, BACE and Aβ1‑40 in the brain were markedly increased in the model rats compared with controls. The level of glutaminase in the serum and the expression of ZO‑1 in the brain were decreased in the model rats compared with controls. IETM was present in the rat model of aluminum neurotoxicity established by D‑galactose and AlCl3 and may be important in the development of this neurotoxicity.
Collapse
Affiliation(s)
- Feng Wang
- Department of Pathophysiology, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui-Xia Guo
- Department of Pathophysiology, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Wen-Xing Li
- Department of Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030013, P.R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bai Han
- Department of Psychiatry, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Li-Xin Liu
- The Experimental Center of Science and Research, The First Hospital, Institute of Hepatopathy, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - De-Wu Han
- Department of Pathophysiology, Key Laboratory of Cell Physiology of Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
9
|
Li YF, Yuan YY, Zhang YM, Zhao N, Zhang Q, Meng FX, Gao RP, Yu BF, Zhang YH, Guo R, Wang HL, Xie J, Xu J, Qin Q, Dong XS. HSVtk/GCV system on hepatoma carcinoma cells: Construction of the plasmid pcDNA3.1‑pAFP-TK and targeted killing effect. Mol Med Rep 2017; 16:764-772. [PMID: 28560395 PMCID: PMC5482189 DOI: 10.3892/mmr.2017.6657] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 03/17/2017] [Indexed: 12/17/2022] Open
Abstract
Previous studies demonstrated that herpes simplex virus thymidine kinase (HSVtk) could phosphorylate non-toxic gancyclovir (GCV) efficiently to produce phosphorylated products that result in cell apoptosis, to kill tumor cells. The present study aimed to construct a plasmid vector, pcDNA3.1-pAFP-TK, carrying the suicide gene driven by the alpha-fetoprotein (AFP) promoter, to investigate the cytotoxicity of HSVtk/GCV suicide gene system on hepatoma carcinoma cells. Reverse transcription-polymerase chain reaction and western blotting results demonstrated that the HSVtk gene was effectively expressed in HepG2 hepatoma carcinoma cells transfected with pcDNA3.1-pAFP-TK plasmid, whereas HSVtk gene expression was not detected in normal HL-7702 liver cells. In addition, MTT assays indicated that cell viability of HepG2 cells with the plasmid pcDNA3.1-pAFP-TK decreased in a dose-dependent manner following treatment with GCV for 48 h. Flow cytometry also revealed that the cell apoptosis rate and mitochondrial membrane potential reduction rate in the HepG2 cells treated with HSVtk/GCV suicide gene system were significantly higher than in the control group. Apoptosis rates in the control group and the pcDNA3.1-pAFP-TK group were (1.00±0.62%) and (38.70±6.03%), respectively. Mitochondrial membrane potential reduction rates in the control group and the pcDNA3.1-pAFP-TK group were (0.57±0.11%) and (22.84±5.79%), respectively. Caspase-3 staining demonstrated that activated caspase-3 increased significantly in the HepG2 cells treated with HSVtk/GCV suicide gene system, whereas in the control group activated caspase-3 increase was not observed. The results of the present study, therefore, indicated that HSVtk suicide gene was obviously expressed in the HepG2 cells and that the HSVtk/GCV system was effective at killing HepG2 hepatoma carcinoma cells.
Collapse
Affiliation(s)
- Yong-Fang Li
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yang-Yang Yuan
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Ying-Min Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Na Zhao
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Qi Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Fan-Xiu Meng
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Ran-Peng Gao
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yue-Hong Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui Guo
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Long Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Jun Xu
- Department of General Surgery, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan, Shanxi 030013, P.R. China
| | - Qin Qin
- Central Laboratory, Shanxi Provincial People's Hospital, Shanxi Medical University, Taiyuan, Shanxi 030012, P.R. China
| | - Xiu-Shan Dong
- Department of General Surgery, Shanxi Dayi Hospital, Taiyuan, Shanxi 030032, P.R. China
| |
Collapse
|
10
|
Pang M, Bai XY, Li Y, Bai JZ, Yuan LR, Ren SA, Hu XY, Zhang XR, Yu BF, Guo R, Wang HL. Label-free LC-MS/MS shotgun proteomics to investigate the anti-inflammatory effect of rCC16. Mol Med Rep 2016; 14:4496-4504. [PMID: 27748820 PMCID: PMC5101986 DOI: 10.3892/mmr.2016.5841] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 08/18/2016] [Indexed: 12/30/2022] Open
Abstract
Clara cell protein (CC16) is an anti-inflammatory protein, which is expressed in the airway epithelium. It is involved in the development of airway inflammatory diseases, including chronic obstructive pulmonary disease and asthma. However, the exact molecular mechanism underlying its anti‑inflammatory action remains to be fully elucidated. The aim of the present study was to define the protein profiles of the anti‑inflammatory effect of CC16 in lipopolysaccharide (LPS)‑treated rat tracheal epithelial (RTE) cells using shotgun proteomics. Protein extracts were obtained from control RTE cells, RTE cells treated with LPS and RTE cells treated with LPS and recombinant CC16 (rCC16). Subsequent label‑free quantification and bioinformatics analyses identified 12 proteins that were differentially expressed in the three treatment groups as a cluster of five distinct groups according to their molecular functions. Five of the twelve proteins were revealed to be associated with the cytoskeleton: Matrix metalloproteinase‑9, myosin heavy chain 10, actin‑related protein‑3 homolog, elongation factor 1‑α‑1 (EF‑1‑α‑1), and acidic ribosomal phosphoprotein P0. Five of the twelve proteins were associated with cellular proliferation: DNA‑dependent protein kinase catalytic subunit, EF‑1‑α‑1, tyrosine 3‑monooxygenase, caspase recruitment domain (CARD) protein 12 and adenosylhomocysteinase (SAHH) 3. Three proteins were associated with gene regulation: EF‑1‑α‑1, SAHH 3 and acidic ribosomal phosphoprotein P0. Three proteins were associated with inflammation: Tyrosine 3‑monooxygenase, CARD protein 12 and statin‑related protein. ATPase (H+‑transporting, V1 subunit A, isoform 1) was revealed to be associated with energy metabolism, and uridine diphosphate glycosyltransferase 1 family polypeptide A8 with drug metabolism and detoxification. The identified proteins were further validated using reverse transcription‑quantitative polymerase chain reaction. These protein profiles, and their interacting protein network, may facilitate the elucidation of the molecular mechanisms underlying the anti‑inflammatory effects of CC16.
Collapse
Affiliation(s)
- Min Pang
- Respiratory Department, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin-Yan Bai
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yan Li
- Fan‑Xing Biological Technology Co., Ltd., Beijing 010000, P.R. China
| | - Ji-Zhong Bai
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Li-Rong Yuan
- Respiratory Department, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Shou-An Ren
- Respiratory Department, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xiao-Yun Hu
- Respiratory Department, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xin-Ri Zhang
- Respiratory Department, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Rui Guo
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Hai-Long Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
11
|
Hsu HL, Hsu HP, Yu BF, Lu TM, Huang CY, Shih CC, Cheng BC, Hsu CP. Long-term results of coronary artery bypass grafting in patients with dialysis-dependent renal failure. J Cardiovasc Surg (Torino) 2015; 56:809-816. [PMID: 26088012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM Coronary artery disease is the main cause of mortality and morbidity in dialysis-dependent renal failure patients. Both the prevalence and incidence of renal failure are high in Taiwan. However, there were few reports exploring the outcome of coronary aortic bypass grafting (CABG) in these patients. The aim of this study was to determine the survival outcome and risk factors for mortality from CABG in this population. METHODS The operative, early postoperative and late results of 170 dialysis patients undergoing isolated coronary artery bypass grafting from January, 2000 to January, 2012 were retrospectively reviewed. Operative mortality, long-term survival, and risk factors were analyzed. RESULTS One hundred and seventeen patients (68.8%) were male, and the mean age was 61.5±10.3 years (range, 34-86 years). Follow-up was 40.3±32.1 months. Operative mortality was 8.2%. Actuarial survival, including operative mortality, was 81±3% at 1 year, 68±4% at 3 years, 58±5% at 5 years and 49±6% at 10 years, better than the natural course of dialysis-dependent renal failure patients. Age, emergent operation, postoperative ventricular tachycardia or fibrillation, postoperative intra-aortic balloon pump insertion, gastrointestinal bleeding, and left internal mammary artery graft were significant predictors of operative or long term mortality. Most causes of late death were due to infection or cardiac events. CONCLUSION CABG in dialysis patients is associated with a higher incidence of complications, but has acceptable mortality. CABG is beneficial in this population. Internal mammary artery grafting may provide more favorable long term outcomes.
Collapse
Affiliation(s)
- H L Hsu
- Division of Cardiovascular Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan -
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Yu BF, Li WI, Hu XN, Zhang YH, Niu B, Xie J. Hepatocyte gene transfer mediated by stable polyplexes based on MPP-containing DNA complexes. Hepatobiliary Pancreat Dis Int 2009; 8:498-503. [PMID: 19822493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND In the field of gene therapy, viral vectors as delivery tools have a number of disadvantages for medical application. This study aimed to explore a novel nonviral vector as a vehicle for gene therapy. METHODS Transvector-rpE-MPP and EGFP (enhanced green fluorescent protein) were used as the gene transfer carrier and the reporter gene, respectively. Polyplexes which integrate transvector-rpE-MPP, the object gene, and EGFP were formed. The optimal charge ratio, stability, and transduction capacity of the polyplexes in mouse hepatocytes in vitro and in mouse liver in vivo were investigated. The polyplexes of transvector-rpE-MPP and pcDNA(3)-EGFP, with charge ratios of 0, 0.25, 0.5, 0.75, 1 and 1.5 were compared to determine the optimal charge ratio. RESULTS Polyplexes with charge ratios of 1:1 were most stable; pcDNA(3)-EGFP in these complexes resisted digestion by DNase I and blood plasma. On the other hand, pcDNA(3)-EGFP alone was digested. Fluorescence analysis indicated that transvector-rpE-MPP successfully delivered the reporter gene EGFP into hepatocytes and that EGFP expression was detected in hepatocyte cultures and in liver tissue. CONCLUSION These results have laid a foundation for further study of a novel nonviral gene delivery system.
Collapse
Affiliation(s)
- Bao-Feng Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, China
| | | | | | | | | | | |
Collapse
|
13
|
Zheng JP, Tang HY, Chen XJ, Yu BF, Xie J, Wu TC. Construction of recombinant plasmid and prokaryotic expression in E. coli and biological activity analysis of human placenta arresten gene. Hepatobiliary Pancreat Dis Int 2006; 5:74-9. [PMID: 16481288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The proliferation and metastasis of cancers depend on angiogenesis. This property provides the feasibility for the treatment of cancer by inhibition of angiogenesis, and many angiogenic inhibitors have been demonstrated to effectively inhibit angiogenesis and consequently the growth of solid cancer. As for the newly identified angiogenesis inhibitor, arresten, some studies have found its high activity on restrainting tumor vessel. This study was to assess the anti-angiogenic activity of arresten. METHODS The arresten gene was obtained from a healthy puerperal's placenta tissue by the reverse transcriptase-polymerase chain reaction (RT-PCR) method, and molecular cloning to prokaryotic expression plasmid pBV220 by recombination strategy. The prokaryotic expression plasmid pBV220/arr was identified by restriction enzyme digestion and sequenced. The pBV220/arr was transformed into E. coli JM109, DH5alpha, BL21 and BL21 (DE3) by the CaCl2 transformation method. The arresten expression level was detected by SDS-PAGE. The expressed product was purified, re-naturalized and detected for its biological activity of inhibiting the angiogenesis of chorioallantoic membrane (CAM). RESULTS The arresten gene was cloned and pBV220/arr was constructed. The arresten expression level of protein was highly increased after pBV220/arr was transformed into E. coli BL21 (DE3). SDS-PAGE showed that the expressed arresten proteins were mainly inclusion bodies and had a molecular weight of 26 kDa. The expressed arresten protein showed evident biological activities. CONCLUSIONS The successful construction of recombinant plasmid pBV220/arr and the effective expression in E.coli have laid a foundation for further study of its anti-angiogenic function and may pave the way for future anti-tumor application.
Collapse
Affiliation(s)
- Jin-Ping Zheng
- Department of Toxicology, Shanxi Medical Universiy, Taiyuan 030001, China.
| | | | | | | | | | | |
Collapse
|
14
|
Xie J, Yu BF, Xu J, Zhang YH, Cheng NL, Niu B, Hu XN, Xiang Q, Zhang ZG. Protein transduction domain of membrane penetrating peptide can efficiently deliver DNA and protein into mouse liver for gene therapy. Hepatobiliary Pancreat Dis Int 2005; 4:90-3. [PMID: 15730928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND The development of a harmless and efficient nonviral gene delivery system that can facilitate the penetration of nucleic acids through the plasma membrane is a key to successful gene therapy. The aim of this study was to test a nonviral gene transferring vector's function of delivering DNA into liver cells to provide an important clue for gene transfer in liver gene therapy. METHODS The complex of DNA and DNA delivering protein was injected into mice through their tail veins. Then the mice were killed and their liver tissue was sectioned. The gene transferring results were detected using a confocal laser scanning microscope. RESULTS Fluorescence analysis indicated that both DNA-membrane penetrating peptide (MPP) complex and DNA- hepatocyte specific receptor binding domain (HSRBD)-MPP complex could go into liver cells. The fluorescence value of liver cells in the DNA- HSRBD-MPP group was higher than that in the DNA-MPP group. CONCLUSIONS MPP can successfully deliver DNA and protein into cells, and MPP with a HSRBD can specifically deliver DNA into liver cells. These have laid a foundation for further study on the nonviral liver cell gene delivering system.
Collapse
Affiliation(s)
- Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Sharma PM, Bowman M, Yu BF, Sukumar S. A rodent model for Wilms tumors: embryonal kidney neoplasms induced by N-nitroso-N'-methylurea. Proc Natl Acad Sci U S A 1994; 91:9931-5. [PMID: 7937920 PMCID: PMC44931 DOI: 10.1073/pnas.91.21.9931] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Embryonal kidney cell tumors develop in rats given the alkylating agent N-nitroso-N'-methylurea as neonates. These tumors resemble the childhood Wilms tumors in their histopathology. Deletions and mutations in the Wilms tumor suppressor gene, WT1, are present in up to 6% of childhood nephroblastomas. To investigate the role of WT1 in rat kidney tumorigenesis, we studied the genetic alterations in WT1 and its target genes. Point mutations were found in WT1 cDNA in 7 of 18 kidney tumors. Mesenchymal tumors contained G-->A transition mutations in codons 128, 364, and 372, typical of the methylating action of N-nitroso-N'-methylurea on DNA. Each of the four nephroblastomas contained the same T-->A mutation at codon 111 of WT1, reflective of transversion mutagenesis by N-nitroso-N'-methylurea in vivo. Like Wilms tumors, mRNA levels of WT1, IGF2, Pax-2, and MK genes were higher than newborn kidney in the majority of the tumors. The histopathology of the rat kidney tumors and the genetic alterations are reminiscent of those observed in Wilms tumors, establishing this as a relevant model system for the human disease.
Collapse
Affiliation(s)
- P M Sharma
- Molecular Biology of Breast Cancer Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037
| | | | | | | |
Collapse
|
16
|
Yu BF. [Preliminary clinical application of new bone marrow imaging agent 99mTc-polyphase liposome in malignant lymphoma]. Zhonghua Zhong Liu Za Zhi 1990; 12:297-300. [PMID: 2272267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bone marrow (BM) imaging with 99mTc-polyphase liposome in 30 malignant lymphoma patients demonstrated that central BM hypoplasia accounted for 90% (28/30) and peripheral BM hypoplasia 20% (6/30) with peripheral BM expansion of 80% (23/30). Focal BM lesion was shown in 7 patients which conformed with the results of bone imaging and X-ray film. The uptake index of BM in patients treated with chemotherapy was low as compared to that in patients treated with radiotherapy (P less than 0.05). Although BM suppression by chemotherapy was more severe than by radiotherapy, BM function essentially recovered 1 month after cessation of chemotherapy, on the other hand, while central BM suppression by radiotherapy was mild, it lasted for longer periods of time. Peripheral BM suppression by radiotherapy was both shorter in duration and milder in severity in comparison with central BM suppression. BM imaging is valuable for the understanding of BM function, ascertainment of the appropriate interval between treatments and early detection of local BM involvement.
Collapse
Affiliation(s)
- B F Yu
- China-Japan Friendship Hospital, Beijing
| |
Collapse
|
17
|
Affiliation(s)
- C S Marn
- Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-0030
| | | | | | | |
Collapse
|
18
|
Yu BF. [Clinical and experimental research on lutongning in treating vascular headache]. Zhong Xi Yi Jie He Za Zhi 1989; 9:278-9, 261. [PMID: 2766424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Observing the therapeutic effect of 350 cases of vascular headache patients treated with oral Lutongning decoction and goat horn compound separately, and comparing the effects of these two groups' patients, they showed that the former was much better than the latter. The author found that cure rates of these two groups were 75.3% and 56% respectively (P less than 0.01). The medicinal action of the former was also faster than that of the latter, and the time to recover was shorter. So, Lutongning was an effective prescription in the treatment of vascular headache. In order to research the effective mechanism of Lutongning on vascular headache, the animal experiment was carried out. The hot-plate method and acetic acid body-turning method were used for the experiment in rats. After perfusing Lutongning into the rat's stomach, the author found that the reaction times by hot-plate method and the turning times by acetic acid body-turning method were less than those of the control animals. The result showed that the analgetic effect of this decoction was more obvious.
Collapse
|
19
|
Yu BF. [A new lymph node imaging agent--99mTc-polyphase liposome oleatis (99mTc-plo)]. Zhonghua Zhong Liu Za Zhi 1988; 10:270-3. [PMID: 3248482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A new lymph node radio-imaging agent, technetium-99m polyphase liposome oleatis (99mTc-plo), has recently been developed. Polyphase liposome oleatis was labelled with radionuclide by stannous chloride method. The labelled rate was 90% or more as technically identified by thin layer chromatography, external gamma-camera imaging and radioautography. In animal experiment, 0.2-0.3 ml (0.2 mci) of the 99mTc-plo was injected subcutaneously into the toes web of rats. After half an hour, the regional lymph nodes of popliteal fossa were visualized very clearly. The imaging figures may keep their distinct shadow up to 24 hours. The tested rabbits were sacrificed 10 hours after 99mTc-plo injection for detecting various kinds of tissue and organ with a scintillation counter. The regional lymph nodes revealed the highest uptake rate of the new agent, 12,116; 1,303; 1,615 times higher than that of the adjacent muscles, liver and spleen, respectively. In clinical experiment, 0.2-0.3 ml (0.5-0.8 mci) of the 99mTc-plo was injected subcutaneously into the toes web of patients. Half an hour later, the lymph nodes of inguinal, external iliac and common iliac regions appeared in sequence. If the new agent is injected perianally, the internal iliac lymph nodes will be seen. No side effect was observed in both types of experiment. This new agent has been tried in rats, rabbits and dogs with similar positive results. The new lymph node imaging technique is simple, safe, reliable and reproducible. This agent, being directed toward the lymph nodes and possessing affinity to cancer cells, is expected to be supplementary method to CT and B-ultrasonography for detecting lymphoid malignancy and lymph node metastasis.
Collapse
Affiliation(s)
- B F Yu
- Cancer Institute, Chinese Academy of Medical Sciences, Beijing
| |
Collapse
|