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Chen JS, Wang ST, Mei Q, Sun T, Hu JT, Xiao GS, Chen H, Xuan YH. The role of CBL-CIPK signaling in plant responses to biotic and abiotic stresses. Plant Mol Biol 2024; 114:53. [PMID: 38714550 DOI: 10.1007/s11103-024-01417-0] [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] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/06/2024] [Indexed: 05/10/2024]
Abstract
Plants have a variety of regulatory mechanisms to perceive, transduce, and respond to biotic and abiotic stress. One such mechanism is the calcium-sensing CBL-CIPK system responsible for the sensing of specific stressors, such as drought or pathogens. CBLs perceive and bind Calcium (Ca2+) in response to stress and then interact with CIPKs to form an activated complex. This leads to the phosphorylation of downstream targets, including transporters and ion channels, and modulates transcription factor levels and the consequent levels of stress-associated genes. This review describes the mechanisms underlying the response of the CBL-CIPK pathway to biotic and abiotic stresses, including regulating ion transport channels, coordinating plant hormone signal transduction, and pathways related to ROS signaling. Investigation of the function of the CBL-CIPK pathway is important for understanding plant stress tolerance and provides a promising avenue for molecular breeding.
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Affiliation(s)
- J S Chen
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - S T Wang
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - Q Mei
- College of Plant Protection, Shenyang Agricultural University, Shenyang, 110866, China
| | - T Sun
- Chongqing Customs Technology Center, Chongqing, 400020, China
| | - J T Hu
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China
| | - G S Xiao
- College of Biology and Food Engineering, Chongqing Three Gorges University, Wanzhou, 404100, China.
| | - H Chen
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Y H Xuan
- State Key Laboratory of Elemento-Organic Chemistry and Department of Plant Protection, National Pesticide Engineering Research Center (Tianjin), Nankai University, Tianjin, 300071, China.
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Liu JL, Chen DS, Cheng ZQ, Hu JT. [Expression of SOX10 and GATA3 in breast cancer and their significance]. Zhonghua Bing Li Xue Za Zhi 2022; 51:536-541. [PMID: 35673726 DOI: 10.3760/cma.j.cn112151-20211025-00773] [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: 06/15/2023]
Abstract
Objective: To investigate the expression characteristics of SOX10 and GATA3 in breast cancer and the value of their combination. Methods: A total of 360 breast cancer specimens with SOX10 immunohistochemical staining were collected from the Department of Pathology in Shenzhen People's Hospital from 2018 to 2021, including 268 cases with simultaneous SOX10 and GATA3 staining. The expression of SOX10 and GATA3 in primary and metastatic breast cancer was detected, and the correlations between SOX10 and GATA3 and the molecular types and clinicopathological features of breast cancer were compared, and the distribution differences among each group were statistically analyzed. Results: The overall expression of SOX10 and GATA3 in breast cancer were 25.8%(93/360) and 81.7%(219/268), and that in triple negative breast cancer (TNBC) were 83.3%(80/96) and 42.7%(32/75), respectively. SOX10 was strongly associated with TNBC (P<0.001), whereas GATA3 was highly expressed in luminal A, luminal B and HER2 over expression breast cancers (P<0.001). The expression of SOX10 and GATA3 was negatively correlated in TNBC, and the combined expression rates of SOX10 and GATA3 in breast cancer and TNBC could reach 97.8% (262/268) and 94.7%(71/75), respectively. In addition, the expression of SOX10 was closely correlated with high histological grade, high Ki-67 proliferation index and lymph node metastasis, and negatively correlated with AR. The expression of GATA3 was correlated with low histological grade and lymph node metastasis, and positively correlated with AR, and the difference was statistically significant. Conclusions: SOX10 is a sensitive marker of TNBC, while GATA3 is highly expressed in non-triple negative breast cancer. The two complementary, combined application of SOX10-GATA3 can improve the detection rate of breast cancer, especially TNBC. SOX10 is associated with malignant characteristics of the tumor, suggesting that SOX10 can be used as a prognostic marker and potential therapeutic target for breast cancer.
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Affiliation(s)
- J L Liu
- Department of Pathology, Shenzhen People's Hospital/the Second Clinical Medical College, Jinan University/the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, China
| | - D S Chen
- Department of Otorhinolaryngology, Shenzhen People's Hospital/the Second Clinical Medical College, Jinan University/the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, China
| | - Z Q Cheng
- Department of Pathology, Shenzhen People's Hospital/the Second Clinical Medical College, Jinan University/the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, China
| | - J T Hu
- Department of Pathology, Shenzhen People's Hospital/the Second Clinical Medical College, Jinan University/the First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, China
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Qian J, Liu T, Wang BQ, Hu JT, Wang Y, Zhang QG. [Rib cartilage framework supporting combined with local flap grafting for correction of cryptotia]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:329-332. [PMID: 33832189 DOI: 10.3760/cma.j.cn115330-20200429-00353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the curative effect of rib cartilage framework supporting combined with local flap grafting for correction of cryptotia. Methods: Fourteen cases (nineteen ears) were corrected by rib cartilage framework supporting combined with local flap grafting method from January 2017 to March 2019. Part of the 7th rib cartilage was carved into a scalloped cartilage piece, which was implanted on the retroauricular cartilage to release and expand the deformed cartilage. A "M" incision was designed on the retroauricular skin to make the local flap grafting. Results: All corrected auricles were followed up for four months to three year and abtained satisfactory and stable appearance. In one case, the edge of the helix was broken two weeks after the operation, and well healed after repairing. Conclusions: The rib cartilage framework supporting combined with local flap grafting method can fully correct the deformity of cryptotia, and the long-term effect is satisfied. It can be an important complement to the classic methods.
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Affiliation(s)
- J Qian
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
| | - T Liu
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
| | - B Q Wang
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
| | - J T Hu
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
| | - Y Wang
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
| | - Q G Zhang
- th Department of Plastic Surgery, Plastic Surgery Hospital, Peking Union Medical College,Chinese Academy of Medical Sciences, Beijing 100144, China
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Dai YL, Zhou J, Lin J, Hu JT, Zhao X. [Recurrent Takotsubo syndrome associated with pheochromocytoma: a case report]. Zhonghua Nei Ke Za Zhi 2020; 59:464-467. [PMID: 32486588 DOI: 10.3760/cma.j.cn112138-20190919-00639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y L Dai
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - J Zhou
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - J Lin
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - J T Hu
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - X Zhao
- Department of Cardiology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Liu Y, Yang ZJ, Zhou J, Xiong P, Wang Q, Yang Y, Hu Y, Hu JT. Comparison of Anchorage Efficiency of Orthodontic Mini-implant and Conventional Anchorage Reinforcement in Patients Requiring Maximum Orthodontic Anchorage: A Systematic Review and Meta-analysis. J Evid Based Dent Pract 2020; 20:101401. [PMID: 32473793 DOI: 10.1016/j.jebdp.2020.101401] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/17/2019] [Accepted: 01/17/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To compare the clinical effectiveness of mini-implants (MIs) and conventional anchorage appliances used for orthodontic anchorage reinforcement in patients with class I or II malocclusion with bimaxillary protrusion. MATERIALS AND METHODS Literature search was conducted through PubMed, Embase, and Cochrane from inception to July 2018. The following Medical Subject Heading terms were used for the search string: "skeletal anchorage", "temporary anchorage devices", "miniscrew implant", "mini-implant", "micro-implant". Standardized mean difference (SMD) and 95% confidence interval (CI) of horizontal and vertical movements of teeth from baseline were used for comparison. RESULTS A total of 12 studies were included in the final analysis. MI group significantly lowered mesial movement of molars compared to conventional anchorage group (SMD = -1.48, 95% CI = -2.25 to -0.72; P = .0002). There was significantly higher retraction of incisors in the MI group than in the conventional group (SMD = -0.47 mm, 95% CI = -0.87 to -0.07; P = .02). No significant difference was seen in vertical movement of molars (SMD = -0.21 mm, 95% CI = -0.87 to 0.45; P = .52) and incisors (SMD = -0.30, 95% CI = -1.18 to 0.58; P = .5). CONCLUSION MIs seem to be more effective than the conventional anchorage devices in terms of minimizing unintended mesial movement of molars with maximum retraction of anterior teeth.
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Affiliation(s)
- Yan Liu
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Zhen-Jin Yang
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Jing Zhou
- Department of Stomatology, Kunming Yanan Hospital, Kunming City, China.
| | - Ping Xiong
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Quan Wang
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Yan Yang
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Yu Hu
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Jiang-Tian Hu
- The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
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Liu Y, Yang ZJ, Zhou J, Xiong P, Wang Q, Yang Y, Hu Y, Hu JT. Soft Tissue Changes in Patients With Dentoalveolar Protrusion Treated With Maximum Anchorage: A Systematic Review and Meta-analysis. J Evid Based Dent Pract 2019; 19:101310. [PMID: 31843178 DOI: 10.1016/j.jebdp.2019.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 12/06/2018] [Accepted: 01/23/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This meta-analysis aimed at comparing the angular and linear changes of soft tissue profile using conventional anchorage techniques and mini-implant (MI)-based space closure in patients with dentoalveolar protrusion. MATERIALS AND METHODS Electronic databases, viz. PubMed, Embase, and Cochrane Central Register of Controlled Trials, were searched for relevant literature from their inception to December 2017 according to the specific inclusion and exclusion criteria. The following Medical Subject Heading terms were used for searching: "skeletal anchorage", "temporary anchorage devices", "miniscrew implant", "mini-implant", "micro-implant". Selected randomized control trials (RCTs) were assessed for their quality using Cochrane's Risk of Bias Tool, whereas the Newcastle-Ottawa scale was used for non-RCTs. Standardized mean difference (SMD) and 95% confidence interval (CI) were obtained with either fixed- or random-effects models based on the heterogeneity of the included studies. RESULTS A total of 5 articles (2 RCTs with moderate risk of bias and 3 high-quality non-RCT studies) were included in the final analysis. The nasolabial angle had significantly greater changes in the MI group than in the conventional anchorage group (SMD = 0.68, 95% CI = 0.39 to 0.97, P < .0001). Significantly higher retraction of the upper lip was seen in the MI group than in the conventional group (SMD = -0.51, 95% CI = -0.84 to -0.18; P = .002). No significant difference was seen in the facial convexity (SMD = -0.34, 95% CI = -0.76 to 0.07, P = .106) and lower lip retraction (SMD = 0.28, 95% CI = -1.72 to 2.28, P = .784) between the groups. CONCLUSION It was seen that MIs facilitated favorable soft tissue profile than the conventional anchorage devices. However, more high-quality studies are warranted to confirm the clinical effectiveness of MIs.
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Affiliation(s)
- Yan Liu
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Zhen-Jin Yang
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Jing Zhou
- Department of Stomatology, Yanan Hospital of Kunming City, Kunming, China.
| | - Ping Xiong
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Quan Wang
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Yan Yang
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Yu Hu
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
| | - Jiang-Tian Hu
- Department of Orthodontics, The Affiliated Stomatology Hospital of Kunming Medical University, Kunming City, China
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Wang YF, Zuo ZH, Luo P, Pang FS, Hu JT. The effect of cyclic tensile force on the actin cytoskeleton organization and morphology of human periodontal ligament cells. Biochem Biophys Res Commun 2018; 506:950-955. [PMID: 30401563 DOI: 10.1016/j.bbrc.2018.10.163] [Citation(s) in RCA: 7] [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: 10/11/2018] [Accepted: 10/26/2018] [Indexed: 10/27/2022]
Abstract
To explore Girdin/Akt pathway protein expression and morphology change by cyclic tension in the periodontal ligament cells. Human periodontal ligament cells were exposed to cyclic tension force at 4000 μstrain and 0.5 Hz for 6 h though a four-point bending system. Cyclic tension force upregulated F-actin, Girdin and Akt expression in hPDL. In transmission electron microscope assay showed that there are more and bigger mitochondria, more and longer cynapses, more cellular organisms after tension force stimulation than control. The actin filament was changed to be regular lines and pointed to poles of cells. However, we found that the Girdin-depleted cells are small and there are more micro-organisms including more lysosomes and matrix vesicles than control. These finding suggest that the STAT3/Girdin/Akt pathway in PDL to response to mechanical stimulation as well, and Girdin may play a significant role in triggering cell proliferation and migration during orthodontic treatment. It provided an insight into the molecular basis for development of a vitro cell model in studying orthodontic treatment.
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Affiliation(s)
- Yi-Fan Wang
- Department of Orthodontics, School of Stomatology, Shandong University, Jinan, 250012, Shandong, China
| | - Zhi-Hui Zuo
- Department of the Oral and Maxillofacial Surgery, The Children's Hospital of Kunming, Kunming, 650500, Yunnan, China
| | - Peng Luo
- Department of Stomatology, The People's Hospital of Chuxiong Yi Autonomous Prefecture, Chuxiong, 675000, Yunnan, China
| | - Fu-Sheng Pang
- Department of Orthodontics, Hospital of Stomatology, The First Hospital of Qujing, Qujing, 655000, Yunan, China
| | - Jiang-Tian Hu
- Department of Orthodontics, School of Stomatology, Kunming Medical University, Kunming, 650500, Yunnan, China.
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Hu JT, Li Y, Yu B, Gao GJ, Zhou T, Li S. Girdin/GIV is upregulated by cyclic tension, propagates mechanical signal transduction, and is required for the cellular proliferation and migration of MG-63 cells. Biochem Biophys Res Commun 2015; 464:493-9. [DOI: 10.1016/j.bbrc.2015.06.165] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 06/29/2015] [Indexed: 11/17/2022]
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Jin XY, Yuan L, Hu JT, Ratnatunga C. 121 CHANGES IN ENERGY LOSS AND PRESSURE RECOVERY AFTER BIOPROSTHESIS REPLACEMENT FOR AORTIC STENOSIS. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Jin XY, Yuan L, Hu JT, Pepper JR. 148 THE SIMULTANEOUS CHANGES IN ECG STRAIN PATTERN AND LEFT VENTRICULAR FORCE-VELOCITY RELATIONSHIP IMMEDIATELY AFTER VALVE REPLACEMENT FOR AORTIC STENOSIS:. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Liang LN, Hu JT, Chen DY, Zhou QF, He B, Jiang GB. Primary investigation of heavy metal contamination status in molluscs collected from Chinese coastal sites. Bull Environ Contam Toxicol 2004; 72:937-44. [PMID: 15266689 DOI: 10.1007/s00128-004-0334-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Affiliation(s)
- L N Liang
- Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Post Office Box 2871, 100085 Beijing, People's Republic of China
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Hill AV, Reece W, Gothard P, Moorthy V, Roberts M, Flanagan K, Plebanski M, Hannan C, Hu JT, Anderson R, Degano P, Schneider J, Prieur E, Sheu E, Gilbert SC. DNA-based vaccines for malaria: a heterologous prime-boost immunisation strategy. Dev Biol (Basel) 2002; 104:171-9. [PMID: 11713817] [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: 02/22/2023]
Abstract
A generic approach to inducing high level CD8+ T cell responses would be of value for prophylactic and therapeutic immunisation against several infectious diseases. However, it has been very difficult to achieve such immune responses using available vaccination strategies. Malaria is one of several diseases against which a new generation of better CD8+ T cell-inducing vaccines might be useful and is unusual in that it allows assessment of vaccine efficacy in small numbers of volunteers in carefully controlled challenge studies. Here we review the identification of a heterologous prime-boost regime using DNA priming and recombinant modified vaccinia Ankara (MVA) boosting that induces high level T cell responses in both mice and non-human primates. Clinical trials to determine whether this prime-boost approach is immunogenic in humans are in progress.
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Affiliation(s)
- A V Hill
- Nuffield Department of Clinical Medicine, University of Oxford, John Radcliffe Hospital, UK
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Ansell J, Hu JT, Gilbert SC, Hamilton KA, Hill AV, Lindsay SW. Improved method for distinguishing the human source of mosquito blood meals between close family members. Trans R Soc Trop Med Hyg 2000; 94:572-4. [PMID: 11132392 DOI: 10.1016/s0035-9203(00)90092-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/19/2022] Open
Abstract
We have developed a simple and relatively cheap method to distinguish the origin of mosquito blood meals between close family members, effective for both laboratory and field samples. Each blood meal was squashed on to filter paper and eluted overnight with 0.5 mL phosphate-buffered saline. Deoxyribonucleic acid (DNA) was extracted using a chemical matrix (Insta-gene) which bound to everything from the blood meal except DNA, which remained in the supernatant. Following extractions, reference DNA samples taken directly from finger-prick blood of human subjects and those from blood meals of unknown origin were amplified with human microsatellite markers using a thermal cycler. Polymerase chain reaction products were then run on an ABI gel (Automated Biosystems) to obtain a genotype for each sample. The DNA from each mosquito blood meal was then matched to an individual host. With laboratory samples, human DNA which had been extracted from mosquito blood meals up to 12 h after feeding could be used. One important application of this method will be to identify which members of a community are most at risk from vector-borne diseases. It also has numerous potential applications in studies of insect biting behaviour in both human and veterinary science.
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Affiliation(s)
- J Ansell
- Malaria Ecology Group, Department of Biological Sciences, University of Durham, Science Laboratories, South Road, Durham DH1 3LE, UK
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Aidoo M, Lalvani A, Gilbert SC, Hu JT, Daubersies P, Hurt N, Whittle HC, Druihle P, Hill AV. Cytotoxic T-lymphocyte epitopes for HLA-B53 and other HLA types in the malaria vaccine candidate liver-stage antigen 3. Infect Immun 2000; 68:227-32. [PMID: 10603392 PMCID: PMC97125 DOI: 10.1128/iai.68.1.227-232.2000] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [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: 11/20/2022] Open
Abstract
The development of an effective preerythrocytic vaccine against Plasmodium falciparum malaria is likely to require inclusion of components from several preerythrocytic antigens. The association of HLA-B53 with resistance to severe malaria in West Africa provided evidence that HLA class I-restricted CD8(+) T-cell responses play a role in protective immunity in African children, supporting data from rodent models of malaria. Previously, a single epitope from liver-stage-specific antigen 1 (LSA-1) has been shown to be recognized by HLA-B53-specific cytotoxic T lymphocytes (CTL), but HLA-B53 epitopes were not found in four other antigens. In this study we measured CTL responses to peptides from the recently sequenced antigen liver-stage antigen 3 (LSA-3) and identified in it a new epitope restricted by HLA-B53. Several CTL epitopes restricted by other class I types were also identified within LSA-3 in studies in The Gambia and Tanzania. CTL were also identified to an additional P. falciparum antigen, exported protein 1 (Exp-1), the homologue of which is a protective antigen in a rodent model of malaria. These findings emphasize the diversity of P. falciparum antigens recognized by CD8(+) T cells in humans and support the inclusion of components from several antigens in new CTL-inducing vaccines against malaria.
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Affiliation(s)
- M Aidoo
- Molecular Immunology Group, Institute of Molecular Medicine, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, United Kingdom.
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Curtis CF, Pates HV, Takken W, Maxwell CA, Myamba J, Priestman A, Akinpelu O, Yayo AM, Hu JT. Biological problems with the replacement of a vector population by Plasmodium-refractory mosquitoes. Parassitologia 1999; 41:479-81. [PMID: 10697905] [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: 02/15/2023]
Abstract
Attempts are being made to backcross into Anopheles gambiae s.s. the gene(s) which cause zoophily in Anopheles quadriannulatus. Such a backcrossed strain might be preferable to a Plasmodium-refractory strain as a basis for genetic control because a refractory strain could select for evasion of refractoriness in the wild Plasmodium population. The species composition of the malaria vector population in several Tanzanian villages was overwhelmingly An. gambiae s.s. in a normal rainy season, but consisted of four species, all proved by ELISA and/or PCR to carry P. falciparum sporozoites, at the time of the heavy rains associated with El Niño. Thus any scheme, for malaria transmission control by replacement of vectors by genetically-manipulated non-vectors, would have to be able to replace more than one species.
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Affiliation(s)
- C F Curtis
- London School of Hygiene and Tropical Medicine, UK.
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