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Su S, Cui MY, Gui Z, Guo QQ, Ren H, Ma SF, Mu L, Yu JF, Fu SY, Qi DD. First detection of Candidatus Rickettsia tarasevichiae in Hyalomma marginatum ticks. PLoS One 2024; 19:e0296757. [PMID: 38306367 PMCID: PMC10836667 DOI: 10.1371/journal.pone.0296757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/19/2023] [Indexed: 02/04/2024] Open
Abstract
Ticks are important vectors of zoonotic diseases and play a major role in the circulation and transmission of many rickettsial species. The aim of this study was to investigate the carriage of Candidatus Rickettsia tarasevichiae (CRT) in a total of 1168 ticks collected in Inner Mongolia to elucidate the potential public health risk of this pathogen, provide a basis for infectious disease prevention, control and prediction and contribute diagnostic ideas for clinical diseases that present with fever in populations exposed to ticks. A total of four tick species, Haemaphysalis concinna (n = 21), Dermacentor nuttalli (n = 122), Hyalomma marginatum (n = 148), and Ixodes persulcatus (n = 877), were collected at nine sampling sites in Inner Mongolia, China, and identified by morphological and molecular biological methods. Reverse transcription PCR targeting the 16S ribosomal RNA (rrs), gltA, groEL, ompB and Sca4 genes was used to detect CRT DNA. Sequencing was used for pathogen species confirmation. The molecular epidemiological analysis showed that three species of ticks were infected with CRT, and the overall positive rate was as high as 42%. The positive rate of I. persulcatus collected in Hinggan League city was up to 96%, and that of I. persulcatus collected in Hulun Buir city was 50%. The pool positive rates of D. nuttalli and H. marginatum collected in Bayan Nur city and H. concinna collected in Hulun Buir city were 0%, 28% and 40%, respectively. This study revealed the high prevalence of CRT infection in ticks from Inner Mongolia and the first confirmation of CRT detected in H. marginatum in China. The wide host range and high infection rate in Inner Mongolia may dramatically increase the exposure of CRT to humans and other vertebrates. The role of H. marginatum in the transmission of rickettsiosis and its potential risk to public health should be further considered.
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Affiliation(s)
- Si Su
- Graduate School, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Meng-Yu Cui
- Graduate School, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Zheng Gui
- First Hospital of Jilin University, Changchun, China
| | - Qi-Qi Guo
- Graduate School, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Hong Ren
- First Clinical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Shi-Fa Ma
- Laboratory of Basic and Clinical Psychiatry, The Third People’s Hospital of Hulunbuir City, Hulunbuir, Inner Mongolia, China
| | - Lan Mu
- School of Basic Medicine, Inner Mongolia Medical University, Hohhot Inner Mongolia, China
| | - Jing-Feng Yu
- School of Basic Medicine, Inner Mongolia Medical University, Hohhot Inner Mongolia, China
| | - Shao-Yin Fu
- Inner Mongolia Academy of Agricultural & Animal Husbandry Science, Hohhot, Inner Mongolia, China
| | - Dong-Dong Qi
- Laboratory of Basic and Clinical Psychiatry, The Third People’s Hospital of Hulunbuir City, Hulunbuir, Inner Mongolia, China
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Su S, Hong M, Cui MY, Gui Z, Ma SF, Wu L, Xing LL, Mu L, Yu JF, Fu SY, Gao RJ, Qi DD. Microbial diversity of ticks and a novel typhus group Rickettsia species (Rickettsiales bacterium Ac37b) in Inner Mongolia, China. Parasite 2023; 30:58. [PMID: 38084939 PMCID: PMC10714680 DOI: 10.1051/parasite/2023057] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
Ticks can carry multiple pathogens, and Inner Mongolia's animal husbandry provides excellent environmental conditions for ticks. This study characterized the microbiome of ticks from different geographical locations in Inner Mongolia; 905 Dermacentor nuttalli and 36 Ixodes persulcatus were collected from sheep in three main pasture areas and from bushes within the forested area. Mixed DNA samples were prepared from three specimens from each region and tick species. Microbial diversity was analyzed by 16S rRNA sequencing, and α and β diversity were determined. The predominant bacterial genera were Rickettsia (54.60%), including Rickettsiales bacterium Ac37b (19.33%) and other Rickettsia (35.27%), Arsenophonus (11.21%), Candidatus Lariskella (10.84%), and Acinetobacter (7.17%). Rickettsia bellii was identified in I. persulcatus, while Rickettsiales bacterium Ac37b was found in D. nuttalli from Ordos and Chifeng. Potential Rickettsia and Anaplasma coinfections were observed in the Ordos region. Tick microbial diversity analysis in Inner Mongolia suggests that sheep at the sampling sites were exposed to multiple pathogens.
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Affiliation(s)
- Si Su
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Graduate School, Inner Mongolia Medical University Hohhot 010059 Inner Mongolia China
| | - Mei Hong
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School of Basic Medicine, Inner Mongolia Medical University Hohhot 010110 Inner Mongolia China
| | - Meng-Yu Cui
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Graduate School, Inner Mongolia Medical University Hohhot 010059 Inner Mongolia China
| | - Zheng Gui
- First Hospital of Jilin University Changchun 130021 China
| | - Shi-Fa Ma
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Hulunbuir Mental Health Center Hulunbuir 022150 Inner Mongolia China
| | - Lin Wu
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Beijing Guoke Biotechnology Co., Ltd 102200 Beijing China
| | - Li-Li Xing
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Department of Infection Control, Second Affiliated Hospital of Inner Mongolia Medical University Hohhot Inner Mongolia Autonomous Region 010000 China
| | - Lan Mu
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School of Basic Medicine, Inner Mongolia Medical University Hohhot 010110 Inner Mongolia China
| | - Jing-Feng Yu
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School of Basic Medicine, Inner Mongolia Medical University Hohhot 010110 Inner Mongolia China
| | - Shao-Yin Fu
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Inner Mongolia Academy of Agricultural & Animal Husbandry Science Hohhot 010031 Inner Mongolia China
| | - Rui-Juan Gao
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School of Basic Medicine, Inner Mongolia Medical University Hohhot 010110 Inner Mongolia China
| | - Dong-Dong Qi
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Hulunbuir Mental Health Center Hulunbuir 022150 Inner Mongolia China
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Gui Z, Cai H, Qi DD, Zhang S, Fu SY, Yu JF, Si XY, Cai T, Mao R. Identification and genetic diversity analysis of Rickettsia in Dermacentor nuttalli within inner Mongolia, China. Parasit Vectors 2022; 15:286. [PMID: 35934699 PMCID: PMC9358909 DOI: 10.1186/s13071-022-05387-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 07/11/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The genus Rickettsia contains the lineages spotted fever group (SFG), typhus group (TG), and transitional group (TRG). The spotted fever group Rickettsia (SFGR) is transmitted by ticks. The tick species Dermacentor nuttalli is considered the main vector carrying SFGR in Inner Mongolia. Studying the genetic diversity and population structure of Rickettsia is essential for developing effective control strategies and predicting evolutionary trends of Rickettsia.
Methods
In 2019 we collected 408 D. nuttalli in the Inner Mongolia Autonomous Region, detected the percentage of Rickettsia-positive specimens, and characterized the haplotypes. From the Rickettsia-positive ticks, the gltA and ompA genes were extracted, amplified, and sequenced.
Results
Ten haplotypes of the gltA gene and 22 haplotypes of the ompA gene were obtained. The phylogenetic analysis showed that the haplotypes G1–G7 and G9 of the gltA gene cluster with Rickettsia raoultii, while G8 and G10 cluster with Rickettsia sibirica. Haplotypes O1–O15, O18 and O20–O22 of the ompA gene cluster with R. raoultii, while O16 and O19 cluster with R. sibirica. The average haplotype diversity was 0.3 for gltA and 0.7 for ompA. The average nucleotide diversity was greater than 0.05. Neutrality tests were nonsignificant for Tajima’s D results and Fu’s Fs results. The fixation index values (FST) showed that the degree of genetic differentiation between most sampled populations was small (FST < 0.05), whereas some populations showed a medium (FST > 0.05) or large (FST > 0.15) degree of differentiation. Analysis of molecular variance (AMOVA) revealed that the variation within populations was greater than that between populations. The mismatch analysis of Rickettsia showed double peaks.
Conclusions
We found two Rickettsia spp. (R. raoultii and R. sibirica). The high genetic disparity of Rickettsia allows for easy adaption to different environments. Genetic differentiation between populations is small, and Rickettsia populations do not show a geographically differentiated structure. The high rates of retention and infection of Rickettsia in D. nuttalli together with the animal husbandry exchange in Inner Mongolia gradually led to the harmonization of genetic characteristics of Rickettsia across various regions. Overall, the significant genetic diversity and geographical structure of Rickettsia in D. nuttalli are critical for SFGR control.
Graphical Abstract
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Qi DD, Ding MY, Wang T, Hayat MA, Liu T, Zhang JT. The Therapeutic Effects of Oral Intake of Hydrogen Rich Water on Cutaneous Wound Healing in Dogs. Vet Sci 2021; 8:vetsci8110264. [PMID: 34822637 PMCID: PMC8618955 DOI: 10.3390/vetsci8110264] [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: 10/16/2021] [Revised: 10/28/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022] Open
Abstract
This study explored the effects of drinking Hydrogen-rich water (HRW) on skin wound healing in dogs. Eight circular wounds were analyzed in each dog. The experimental group was treated with HRW thrice daily, while the control group was provided with distilled water (DW). The wound tissues of dogs were examined histopathologically. The fibroblasts, inflammatory cell infiltration, the average number of new blood vessels, and the level of malondialdehyde (MDA) and superoxide dismutase (SOD) activity in the skin homogenate of the wound was measured using the corresponding kits. The expressions of Nrf-2, HO-1, NQO-1, VEGF, and PDGF were measured using the real-time fluorescence quantitative method. We observed that HRW wounds showed an increased rate of wound healing, and a faster average healing time compared with DW. Histopathology showed that in the HRW group, the average thickness of the epidermis was significantly lower than the DW group. The average number of blood vessels in the HRW group was higher than the DW group. The MDA levels were higher in the DW group than in the HRW group, but the SOD levels were higher in the HRW group than in the DW group. The results of qRT-PCR showed that the expression of each gene was significantly different between the two groups. HRW treatment promoted skin wound healing in dogs, accelerated wound epithelization, reduced inflammatory reaction, stimulated the expression of cytokines related to wound healing, and shortened wound healing time.
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Affiliation(s)
- Dong-Dong Qi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
| | - Meng-Yuan Ding
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
| | - Ting Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
| | - Muhammad Abid Hayat
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
| | - Tao Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
| | - Jian-Tao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (D.-D.Q.); (M.-Y.D.); (T.W.); (M.A.H.); (T.L.)
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Harbin 150030, China
- Correspondence: ; Tel.: +86-0451-5519-0470
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Liu ZH, Qi DD, Li X, Zhang SQ, Zhao Y, Fu LX, Lu LY. LncRNA SNHG14 promotes osteogenic differentiation of human bone marrow-derived mesenchymal stem cells via regulating miR-185-5p/WISP2 axis. J BIOL REG HOMEOS AG 2021; 35:605-615. [PMID: 33928771 DOI: 10.23812/20-391-a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) is vital for bone formation, and its dysfunction is linked to osteoporosis (OP). In this work, we explored the function of long non-coding RNA (lncRNA) small nucleolar RNA host gene 14 (SNHG14) in regulating osteogenic differentiation of hBMSCs. In the present study, the expression of SNHG14 in hBMSCs obtained from OP patients was measured by quantitative real-time polymerase chain reaction (qRT-PCR). SNHG14 was over-expressed or knocked down in hBMSCs, and the expression levels of OP-related genes (ALP, OCN, and OPN) in hBMSCs were detected by qRT-PCR and Western blot. StarBase database and miRanda database were used to predict the binding sites between SNHG14 and miR-185-5p, and between miR-185-5p and 3'UTR of WNT1 inducible signaling pathway protein 2 (WISP2), respectively. Luciferase reporter gene assay was used to validate the binding relationship between SNHG14 and miR-185-5p, and miR-185-5p and 3'UTR of WISP2, respectively. Here, we report that SNHG14 was significantly down-regulated in hBMSCs obtained from patients with OP. Overexpression of SNHG14 promoted osteogenic differentiation, while knockdown of SNHG14 worked oppositely. Mechanistically, miR-185-5p was demonstrated to be a target of SNHG14, and could reverse the function of SNHG14. Additionally, WISP2 was identified as a target gene of miR-185-5p in hBMSCs and could be indirectly regulated by SNHG14. Taken together, down-regulation of SNHG14 in hBMSCs accelerated the progression of OP via regulating miR-185-5p/WISP2 axis.
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Affiliation(s)
- Z H Liu
- Department of Spinal Surgery, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - D D Qi
- Department of Spinal Surgery, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - X Li
- Department of Orthopedics, South of Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - S Q Zhang
- Department of Orthopedics, South of Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Y Zhao
- Department of Nursing, South of Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - L X Fu
- Department of Orthopedics, South of Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - L Y Lu
- Department of Joint and Sports Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
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Liu XY, Zhang Y, Li MW, Wang XP, Qi DD, Hao PY, Zhang H, Cheng QQ, Zhao LS, Gao CY, Hu DY. [Efficacy of thrombolytic therapy using reteplase in cases with acute ST-segment elevation myocardial infarction: results from a multicenter clinical trial]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:766-770. [PMID: 27667274 DOI: 10.3760/cma.j.issn.0253-3758.2016.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of intravenous thrombolytic therapy using reteplase in patients with acute ST-segment elevation myocardial infarction (STEMI). Method: A total of 73 hospitals from Henan province took part in this clinical trials during October 2012 to October 2014, 1 226 cases (1 014 male (82.7%), mean age 59.0 (51.0, 66.0) years) with acute STEMI received reteplase as thrombolytic agent.Reperfusion rate was judged according to the clinical symptoms, electrocardiogram, myocardial enzymes and heart rhythm, and the rate of cardiovascular events and bleeding events during hospitalization was also observed.Bleeding events were evaluated with global utilization of streptokinase and tissues plasminogen activator for occluded coronary arteries (GUSTO) criteria.Subgroup analysis was performed to compare the effects of various thrombolysis timing (time from onset to thrombolysis≤6 h or 6-12 h) on reperfusion rate, cardiovascular events and bleeding events rate. Results: The reperfusion rate was 89.3% (1 089/1 219) at 120 minutes after the thrombolysis, average recanalization time was (59.96±26.86) minutes.The reperfusion rate of ≤6 h thrombolysis group was significantly higher than in 6-12 hours group (90.3% (988/1094) vs. 80.8% (101/125), P=0.001), while in-hospital mortality (2.6%(28/1 094) and 0.8% (1/125), P=0.352) and rate of bleeding (5.9%(64/1 094) and 5.6%(7/125), P=0.910) were similar between the two groups. The total in-hospital mortality after thrombolysis was 2.4% (29/1219), which was significantly higher in failed recanalization group than in recanalization group (10.8%(14/130) vs. 1.4%(15/1089), P< 0.001). The total rate of bleeding after thrombolysis was 5.8% (71/1219), there were 3 severe bleeding cases according to GUSTO classification (0.2%), all of them were cerebral hemorrhage, and 2 out of 3 cases died. Conclusions: Reteplase use is related to high recanalization rate and low cardiovascular events and bleeding rate and our results thus show that reteplase is a safe and effective thrombolytic agent for STEMI patients.
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Affiliation(s)
- X Y Liu
- Henan Institute of Cardiovascular Epidemiology, People's Hospital of Zhengzhou University, Henan Provincial People's Hospital, Zhengzhou 450003, China
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Xu CW, Wang G, Wang WL, Gao WB, Han CJ, Gao JS, Zhang LY, Li Y, Wang L, Zhang YP, Tian YW, Qi DD. Association between EML4-ALK fusion gene and thymidylate synthase mRNA expression in non-small cell lung cancer tissues. Exp Ther Med 2015; 9:2151-2154. [PMID: 26136951 DOI: 10.3892/etm.2015.2372] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 02/25/2015] [Indexed: 11/06/2022] Open
Abstract
This study aimed to investigate the association of the mRNA expression of the echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase (ALK) fusion gene with that of thymidylate synthase (TYMS) in non-small cell lung cancer (NSCLC) tissues. Quantitative polymerase chain reaction was used to detect the expression of EML4-ALK fusion gene and TYMS mRNA in 257 cases of NSCLC. The positive rate of EML4-ALK fusion gene was 4.28% in the NSCLC tissues (11/257), and was higher in nonsmokers than in smokers (P<0.05); TYMS mRNA expression was detected in 63.42% (163/257) of cases. An association of the EML4-ALK fusion gene with TYMS expression was detected; a low expression level of TYMS mRNA was observed more frequently when the EML4-ALK fusion gene was present than when it was not detected (P<0.05). In conclusion, patients positive for the EML4-ALK fusion gene in NSCLC tissues are likely to have a low expression level of TYMS, and may benefit from the first-line chemotherapy drug pemetrexed.
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Affiliation(s)
- Chun-Wei Xu
- Department of Pathology, The General Military Hospital of Beijing PLA, Beijing 100700, P.R. China
| | - Gang Wang
- Department of Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Wu-Long Wang
- Graduate School of Dalian University, Dalian, Liaoning 116622, P.R. China ; The Second Affiliated Hospital of Baotou Medical College, Baotou, Inner Mongolia 014030, P.R. China
| | - Wen-Bin Gao
- Department of Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Chuan-Jun Han
- Graduate School of Dalian University, Dalian, Liaoning 116622, P.R. China
| | - Jing-Shan Gao
- Department of Clinical Medicine, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Li-Ying Zhang
- Department of Pathology, The General Military Hospital of Beijing PLA, Beijing 100700, P.R. China
| | - Yang Li
- Department of Oncology, The General Military Hospital of Beijing PLA, Beijing 100700, P.R. China
| | - Lin Wang
- Department of Pathology, Shanxi Dayi Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi 030001, P.R. China
| | - Yu-Ping Zhang
- Department of Pathology, The People's Hospital of Weifang, Weifang, Shandong 261041, P.R. China
| | - Yu-Wang Tian
- Department of Pathology, The General Military Hospital of Beijing PLA, Beijing 100700, P.R. China
| | - Dong-Dong Qi
- Department of Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
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Zhang X, Qi DD, Zhang TT, Chen QX, Wang GZ, Sui GY, Hao XW, Sun S, Song X, Chen YL. Antitumor activity of adenoviral vector containing T42 and 4xT42 peptide gene through inducing apoptosis of tumor cells and suppressing angiogenesis. Mol Med Rep 2014; 11:2083-91. [PMID: 25384346 DOI: 10.3892/mmr.2014.2910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 10/20/2014] [Indexed: 11/05/2022] Open
Abstract
The T42 peptide, generated from two active fragments of tumstatin, has been shown to have anti‑tumor activity. The adenoviral vector is the most frequently used vector in research and clinical trials for gene therapy. In the present study, the anti‑tumor activity of the T42 peptide and quadruple T42 (4xT42) peptide adenoviral vectors were elucidated for the first time, to the best of our knowledge. Human embryonic kidney 293 cells were infected with plasmid adenovirus (pAd)‑enhanced green fluorescent protein (EGFP)‑T42 or pAd‑EGFP‑4xT42 and the expression of the T42 and 4xT42 genes was confirmed by the identification of GFP expression and reverse transcription polymerase chain reaction experiments. The anti‑cancer effects of pAd‑EGFP‑T42 and pAd‑EGFP‑4xT42 on breast cancer cells in vivo and in vitro were subsequently investigated. The results indicated that the packaging of the recombinant adenoviruses with the viral titer was successful, following purification at 5x109 plaque forming units/ml. The results also revealed that the recombinant adenoviruses promoted apoptosis in MCF‑7 breast cancer cells and inhibited cancer growth. Through the analysis of caspase‑3, B‑cell lymphoma 2 (Bcl‑2) and Bcl‑2‑associated X protein expression, it was demonstrated that the T42/4xT42 peptide may induce apoptosis via the mitochondrial pathway. In addition, mouse xenograft experiments confirmed that the T42 peptide inhibited tumor growth and reduced angiogenesis in vivo. In conclusion, the results of the present study indicated that the T42 and 4xT42 peptide genes, transfected by a recombinant adenovirus, may provide a potential novel strategy for the treatment of breast cancer.
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Affiliation(s)
- Xiong Zhang
- Department of Psychiatry, Hulunbeier Mental Health Center, Yakeshi, Inner Mongolia 022150, P.R. China
| | - Dong-Dong Qi
- Clinical Laboratory, Hulunbeier Mental Health Center, Yakeshi, Inner Mongolia 022150, P.R. China
| | - Ting-Ting Zhang
- Department of Urinary Surgery, General Hospital of Daqing Oil Field, Daqing, Heilongjiang 163000, P.R. China
| | - Qing-Xin Chen
- Department of Pharmacology, Harbin Medical University, Harbin, Heilongjiang 150000, P.R. China
| | - Guang-Zhi Wang
- Department of Pathology, The Fifth Affiliated Hospital, Harbin Medical University, Daqing, Heilongjiang 163319, P.R. China
| | - Guang-Yu Sui
- Clinical Laboratory, Chinese Medicine Hospital of Daqing, Daqing, Heilongjiang 163319, P.R. China
| | - Xue-Wei Hao
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University‑Daqing, Daqing, Heilongjiang 163319, P.R. China
| | - Shouli Sun
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University‑Daqing, Daqing, Heilongjiang 163319, P.R. China
| | - Xue Song
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University‑Daqing, Daqing, Heilongjiang 163319, P.R. China
| | - Ying-Li Chen
- Department of Immunology, College of Medical Laboratory Science and Technology, Harbin Medical University‑Daqing, Daqing, Heilongjiang 163319, P.R. China
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