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Younis H, Lv C, Xu B, Zhou H, Du L, Liao L, Zhao N, Long W, Elayah SA, Chang X, He L. Accuracy of dynamic navigation compared to static surgical guides and the freehand approach in implant placement: a prospective clinical study. Head Face Med 2024; 20:30. [PMID: 38745297 DOI: 10.1186/s13005-024-00433-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Computer-guided implant surgery has improved the quality of implant treatment by facilitating the placement of implants in a more accurate manner. This study aimed to assess the accuracy of implant placement in a clinical setting using three techniques: dynamic navigation, static surgical guides, and freehand placement. We also investigated potential factors influencing accuracy to provide a comprehensive evaluation of each technique's advantages and disadvantages. MATERIALS AND METHODS Ninety-four implants in 65 patients were included in this prospective study. Patients were randomly assigned to one of three groups: dynamic navigation, static surgical guides, or freehand placement. Implants were placed using a prosthetically oriented digital implant planning approach, and postoperative CBCT scans were superimposed on preoperative plans to measure accuracy. Seven deviation values were calculated, including angular, platform, and apical deviations. Demographic and consistency analyses were performed, along with one-way ANOVA and post-hoc tests for deviation values. RESULTS The mean global platform, global apical, and angular deviations were 0.99 mm (SD 0.52), 1.14 mm (SD 0.56), and 3.66° (SD 1.64°) for the dynamic navigation group; 0.92 mm (SD 0.36), 1.06 mm (SD 0.47), and 2.52° (SD 1.18°) for the surgical guide group; and 1.36 mm (SD 0.62), 1.73 mm (SD 0.66), and 5.82° (SD 2.79°) for the freehand group. Both the dynamic navigation and surgical guide groups exhibited statistically significant differences in all values except depth deviations compared to the freehand group (p < 0.05), whereas only the angular deviation showed a significant difference between the dynamic navigation and surgical guide groups (p = 0.002). CONCLUSION Our findings highlight the superior accuracy and consistency of dynamic navigation and static surgical guides compared to freehand placement in implant surgery. Dynamic navigation offers precision and flexibility. However, it comes with cost and convenience considerations. Future research should focus on improving its practicality. TRIAL REGISTRATION This study was retrospectively registered at the Thai Clinical Trials Register-Medical Research Foundation of Thailand (MRF) with the TCTR identification number TCTR20230804001 on 04/08/2023. It was also conducted in accordance with the Declaration of Helsinki and approved by the institutional ethics committee at the Xian Jiaotong University Hospital of Stomatology, Xian, China (xjkqII[2021] No: 043). Written informed consent was obtained from all participants.
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Affiliation(s)
- Hamza Younis
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral and Maxillofacial Surgery, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- State Key Laboratory of Oral Diseases & National Center for Stomatology &, National Clinical Research Center for Oral Diseases and Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Chengpeng Lv
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Boya Xu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Huixia Zhou
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Liangzhi Du
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Lifan Liao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Ningbo Zhao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Wen Long
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Sadam Ahmed Elayah
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Department of Oral and Maxillofacial Surgery, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- State Key Laboratory of Oral Diseases & National Center for Stomatology &, National Clinical Research Center for Oral Diseases and Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, 610041, China
| | - Xiaofeng Chang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.
| | - Longlong He
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.
- Department of Oral Implantology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.
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Wang Y, Wang G, Wang X, Yang J, Shen Y, Zhao B, Yang J. Analysis of TLR2 in Primary Endocrine Resistant of Breast Cancer. FRONT BIOSCI-LANDMRK 2024; 29:81. [PMID: 38420813 DOI: 10.31083/j.fbl2902081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/26/2023] [Accepted: 12/07/2023] [Indexed: 03/02/2024]
Abstract
BACKGROUND Previous clinical studies have suggested that Toll-like receptor (TLR)2 had predictive function for endocrine resistance in HER2-positive breast cancer (BCa). Nevertheless, it remains unclear whether TLR2 would relate to development of endocrine therapy resistance in triple-positive breast cancer (TPBC). METHODS Bioinformatic analysis of TLR2 was carried out through a database. Ten tumor tissues were obtained from TPBC patients who underwent surgery, with five patients displaying primary resistance to tamoxifen (TAM) with the remaining 5 being sensitive. Different levels of proteins were identified through mass spectrometry analysis and confirmed through reverse transcription polymerase chain reaction (RT-PCR) and western blot. TAM-resistant cell lines (BT474-TAM) were established by continuous exposure to TAM, and TAM resistance was assessed via IC50. Additionally, TLR2 mRNA was analyzed through western blot and RT-PCR in BT474, BT474-TAM, MCF-7, and MCF10A cells. Furthermore, TLR2-specific interference sequences were utilized to downregulate TLR2 expression in BT474-TAM cells to elucidate its role in TAM resistance. RESULTS TLR2 had a correlation with decreased relapse-free survival in BCa patients from the GSE1456-GPL96 cohort, and it was involved in cancer development predominantly mediated by MAPK and PI3K pathways. TLR2 protein expression ranked in the top 5 proteins within the TAM-resistant group, and was 1.9 times greater than that in the sensitive group. Additionally, TLR2 mRNA and protein expression increased significantly in the established TAM-resistant BT474/TAM cell lines. The sensitivity of TAM was restored upon TLR2 downregulation in BT474/TAM cells. CONCLUSIONS TLR2 might have a therapeutic value as it was involved in the TAM resistance in TPBC, with potential to be a marker for primary endocrine resistance.
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Affiliation(s)
- Yunmei Wang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
- Department of Medical Oncology, Shaanxi Provincial Cancer Hospital Affiliated to Medical School, Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
| | - Guangxi Wang
- Department of Medical Oncology, Shaanxi Provincial Cancer Hospital Affiliated to Medical School, Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
| | - Xiang Wang
- Department of Medical Oncology, Shaanxi Provincial Cancer Hospital Affiliated to Medical School, Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
| | - Jiao Yang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
| | - Yanwei Shen
- Department of Breast Surgery, Shaanxi Provincial People's Hospital, 710061 Xi'an, Shaanxi, China
| | - Bin Zhao
- Department of Epidemiology, Shaanxi Provincial Cancer Hospital Affiliated to Medical School, Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
| | - Jin Yang
- Department of Medical Oncology, First Affiliated Hospital of Xi'an Jiao Tong University, 710061 Xi'an, Shaanxi, China
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Deng H, Cong Y, Lei J, Li D, Ke C, Fan Z, Wang H, Wang P, Zhuang Y. Effect of O-arm on reduction quality and functional recovery of acetabular dome impaction fractures: a retrospective clinical study. BMC Musculoskelet Disord 2023; 24:858. [PMID: 37919740 PMCID: PMC10621090 DOI: 10.1186/s12891-023-06987-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Acetabular dome impaction fractures (ADIF) are difficult to reduce and have a high failure rate. Consistency between the acetabulum and the femoral head is usually assessed using intraoperative X-ray fluoroscopy to evaluate the quality of fracture reduction. This study examines the effects of intraoperative mobile 2D/3DX imaging system (O-arm) on the reduction quality and functional recovery of ADIF. METHODS We retrospectively analysed the data of 48 patients with ADIF treated at Honghui Hospital between October 2018 and October 2021.The patients were divided into the X-ray and O-arm groups. The residual step-off and gap displacements in the acetabular dome region were measured, and fracture reduction quality was evaluated. Hip function was evaluated using the modified Merle d'Aubigné and Postel scoring systems. RESULTS There were no significant intergroup differences in the preoperative general data (p > 0.05). The mean residual average step displacement in the acetabular dome region was 3.48 ± 2.43 mm and 1.61 ± 1.16 mm (p < 0.05), while the mean gap displacement was 6.72 ± 3.69 mm and 3.83 ± 1.67 mm (p < 0.05) in the X-ray and the O-arm groups, respectively. In the X-ray group, according to the fracture reduction criteria described by Verbeek and Moed et al., one case was excellent, 13 cases were good, 11 cases were poor; 56% were excellent or good. In the O-arm group, seven cases were excellent, 12 cases were good, and four cases were poor; overall in this group, 82.6% were excellent or good (p < 0.05). A total of 46 patients achieved fracture healing at the last follow-up. In the X-ray group, according to the modified Merle d'Aubigné and Postel function score, three cases were excellent,12 cases were good, six cases were middle, three cases were poor; 62.5% were excellent or good, In the O-arm group, 15 cases were excellent, four cases were good, two cases were middle, one case was poor; 86.4% were excellent or good (p < 0.05). CONCLUSIONS The application of O-arm in ADIF can improve fracture reduction quality and functional recovery.
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Affiliation(s)
- Hongli Deng
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Yuxuan Cong
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Jinlai Lei
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Dongyang Li
- Xi'an Medical University, No. 1, Xinwang Road, Weiyang District, Xi'an, Shaanxi, 710021, China
| | - Chao Ke
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Zhiqiang Fan
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Hu Wang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Pengfei Wang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Yan Zhuang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China.
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Han S, Xia CJ, Li M, Zhao XM, Zhang GQ, Li LB, Su YH, Fang QL. First-principles study on electronic states of In 2Se 3/Au heterostructure controlled by strain engineering. RSC Adv 2023; 13:11385-11392. [PMID: 37057260 PMCID: PMC10088815 DOI: 10.1039/d3ra00134b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/27/2023] [Indexed: 04/15/2023] Open
Abstract
The development of low-dimensional multifunctional devices has become increasingly important as the size of field-effect transistors decreases. In recent years, the two-dimensional (2D) semiconductor In2Se3 has emerged as a promising candidate for applications in the fields of electronics and optoelectronics owing to its remarkable spontaneous polarization properties. Through first-principles calculations, the effects of the polarization direction and biaxial tensile strain on the electronic and contact properties of In2Se3/Au heterostructures are investigated. The contact type of In2Se3/Au heterostructures depends on the polarization direction of In2Se3. The more charge transfers from the metal to the space charge region, the biaxial tensile strain increases. Moreover, the upward polarized In2Se3 in contact with Au maintains a constant n-type Schottky contact as the biaxial tensile strain increases, with a barrier height Φ SB,n of only 0.086 eV at 6% strain, which is close to ohmic contact. On the other hand, the downward polarized In2Se3 in contact with Au can be transformed from p-type to n-type by applying a biaxial tensile strain. Our calculation results can provide a reference for the design and fabrication of In2Se3-based field effect transistors.
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Affiliation(s)
- Sha Han
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Cai-Juan Xia
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Min Li
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Xu-Mei Zhao
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Guo-Qing Zhang
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Lian-Bi Li
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Yao-Heng Su
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
| | - Qing-Long Fang
- School of Science, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Engineering Research Center of Flexible Radiation Protection Technology, University of Shaanxi Province, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
- Xi'an Key Laboratory of Nuclear Protection Textile Equipment Technology, Xi'an Polytechnic University Xi'an 710048 Shaanxi China
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Wang L, Sheng G, Cui J, Yao Y, Bai X, Chen F, Yu W. Electroacupuncture attenuates ischemic injury after stroke and promotes angiogenesis via activation of EPO mediated Src and VEGF signaling pathways. PLoS One 2022; 17:e0274620. [PMID: 36108080 PMCID: PMC9477374 DOI: 10.1371/journal.pone.0274620] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/29/2022] [Indexed: 11/19/2022] Open
Abstract
Although electroacupuncture (EA) has been shown to be effective in the treatment of stroke, its mechanisms of action remain undefined. This study explored the therapeutic effects of EA in rats with cerebral ischemia-reperfusion injury (CIRI) and evaluated its possible mechanisms in promoting angiogenesis. To evaluate the effect of EA, we used 2, 3, 5-Triphenyl-2H-Tetrazolium Chloride (TTC) staining and behavior score to calculate the cerebral infarct volume and neurological deficit score after CIRI. Western blot (WB) analysis was employed to evaluate the expression of cluster of differentiation 34 (CD34), erythropoietin (EPO), vascular endothelial growth factor (VEGF) and phospho-Src (p-Src) in the brain of the rats with CIRI. On the other hand, we established an oxygen-glucose deprivation/reoxygenation (OGD/R) injury model using brain microvascular endothelial cells (BMECs), and analyzed cell viability and expression of VEGF or p-Src using cell counting kit-8 (CCK-8) and WB, respectively. Our data showed that EA at the GV26 acupoint could significantly promote the expression of CD34, EPO, VEGF and p-Src in CIRI rats. Our CCK-8 results demonstrated that intervention with recombinant EPO and VEGF proteins remarkably improved the viability of BMECs after OGD/R, while a Src inhibitor, PP1, reversed this phenotype. The WB results showed that the recombinant EPO protein increased the expression of VEGF and p-Src, which was significantly inhibited by PP1. Taken together, our findings showed that EA at the GV26 acupoint can significantly attenuate ischemic injury after stroke and promote angiogenesis via activation of EPO-mediated Src and VEGF signaling pathways. Besides, the upregulation of VEGF may also be associated with the activation of Src by EPO.
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Affiliation(s)
- Lifen Wang
- Shaanxi Academy of Traditional Chinese Medicine, Shaanxi Provincial Hospital of Chinese Medicine, Xi’an, China
| | - Gang Sheng
- Shaanxi Academy of Traditional Chinese Medicine, Shaanxi Provincial Hospital of Chinese Medicine, Xi’an, China
| | - Jinjun Cui
- Department of Neurology, Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine, Cangzhou, China
| | - Yanling Yao
- Shaanxi Academy of Traditional Chinese Medicine, Shaanxi Provincial Hospital of Chinese Medicine, Xi’an, China
| | - Xue Bai
- College of Acupuncture-Moxibustion and Massage, Shaanxi University of Chinese Medicine, Xian yang, China
| | - Fan Chen
- College of Acupuncture-Moxibustion and Massage, Shaanxi University of Chinese Medicine, Xian yang, China
| | - Wei Yu
- Department of Physiology, Xi’an Medical University, Xi’an, China
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Xu R, Dang D, Wang Z, Zhou Y, Xu Y, Zhao Y, Wang X, Yang Z, Meng L. Facilely prepared aggregation-induced emission (AIE) nanocrystals with deep-red emission for super-resolution imaging. Chem Sci 2022; 13:1270-1280. [PMID: 35222910 PMCID: PMC8809421 DOI: 10.1039/d1sc04254h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 12/11/2021] [Indexed: 12/20/2022] Open
Abstract
Organic nanocrystals (NCs) with high brightness are highly desirable for biological imaging. However, the preparation of NCs by a facile and fast method is still challenging. Herein, an aggregation-induced emission (AIE) luminogen of 4,4'-(5,6-difluorobenzo[c][1,2,5]thiadiazole-4,7-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (DTPA-BT-F) in the deep-red region is designed with intensive crystalline features to obtain NCs by kinetically controlled nanoprecipitation. The prepared AIE NCs with high brightness and good photo-stability are then applied in super-resolution imaging via stimulated emission depletion (STED) nanoscopy. As observed, the nanostructures in lysosomes of both fixed and live cells are well visualized with superior lateral resolutions under STED nanoscopy (full width at half maximum values, 107 and 108 nm) in contrast to that in confocal imaging (548 and 740 nm). More importantly, dynamic monitoring and long-term tracking of lysosomal movements in live HeLa cells, such as lysosomal contact, can also be carried out by using DTPA-BT-F NCs at a superior resolution. To the best of our knowledge, this is the first case of AIE NCs prepared by nanoprecipitation for STED nanoscopy, thus providing a new strategy to develop high performance imaging agents for super-resolution imaging.
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Affiliation(s)
- Ruohan Xu
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Dongfeng Dang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Zhi Wang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Yu Zhou
- School of Physics, Xi'an Jiao Tong University Xi'an 710049 P. R. China
- Instrumental Analysis Center, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Yanzi Xu
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Yizhen Zhao
- School of Physics, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Xiaochi Wang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Zhiwei Yang
- School of Physics, Xi'an Jiao Tong University Xi'an 710049 P. R. China
| | - Lingjie Meng
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiao Tong University Xi'an 710049 P. R. China
- Instrumental Analysis Center, Xi'an Jiao Tong University Xi'an 710049 P. R. China
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