张建 1,2梁超豪 1罗志佳 1孟凡 1[ ... ]王倩 1,*
作者单位
摘要
1 广州医科大学生物医学工程学院医学影像创新实验室,广东 广州 511436
2 广州医科大学附属第一医院呼吸疾病国家重点实验室,广东 广州 510120
巨噬细胞作为炎症阶段的主要吞噬细胞,其高表达是急性呼吸道炎症发展过程的临床特征之一。目前还没有一种成像方法能够以深组织穿透性和高分辨率的方式呈现巨噬细胞在急性炎症中的表达。以吲哚菁绿纳米颗粒(Nano-ICG)作为一种高效的光声成像(PAI)增强造影剂,评估了急性呼吸道炎症中巨噬细胞的表达量。激光共聚焦显微镜下的成像效果证实,Nano-ICG能够快速地被巨噬细胞吞噬。利用Nano-ICG增强光声成像效果后,气管内的PAI结果显示了巨噬细胞在炎症后气管壁上的分布区域。Nano-ICG增强的光声成像能够无创、定量地评估急性呼吸道炎症的发展程度,有望为呼吸疾病相关基础研究和临床诊疗提供新的影像技术支持。
医用光学 光声成像 急性呼吸道炎症 吲哚菁绿纳米颗粒 巨噬细胞 
中国激光
2024, 51(9): 0907012
Author Affiliations
Abstract
1 State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou 570228, P. R. China
2 Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, Haikou 570228, P. R. China
3 Key Laboratory of Hainan Trauma and Disaster Rescue, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, P. R. China
4 Engineering Research Center for Hainan Bio-Smart Materials and Bio-Medical Devices, Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, P. R. China
Monomethyl auristatin E (MMAE) is a derivative of the marine peptide Dolastatin 10, which has therapeutic effects against various cancers according to its antimitotic activity in multiple clinical trials. The antibody drug conjugate (ADC) of MMAE is currently used in clinical practice. However, the safety issues of MMAE-based ADC, such as high drug toxicity and poor bioavailability, still exist when using it for anticancer therapy. A sustained release of drug delivery approach should be used to reduce toxicity and achieve sufficient anticancer effects. Herein, PLGA-b-PEG2000 with excellent biocompatibility and slow degradation ability was adopted to construct MMAE-loaded nanoparticles for safe and effective chemotherapy. The sustained release effect and the immunogenic cell death (ICD) effect of PLGA-MMAE nanoparticles were assessed by in vitro experiments. The PLGA-MMAE nanoparticles effectively accumulated in the tumor through the enhanced permeability and retention (EPR) effect, inducing cell apoptosis and causing a certain degree of immune response. The sustained drug release of PLGA-MMAE improved the bioavailability and effectively reduced the toxicity and development of the tumor compared to the effect of free MMAE or ADC. Overall, this study provides a safe and effective chemotherapeutic approach, as well as a simple and effective synthetic process for MMAE-based nanoparticles, improving their therapeutic efficacy and safety.
Monomethyl auristatin E poly (lactic-co-glycolic acid) nanoparticles sustained release chemotherapy immunogenic cell death 
Journal of Innovative Optical Health Sciences
2024, 17(2): 2350024
作者单位
摘要
1 陆军军医大学, 西南医院 检验科, 重庆  400038
2 同济大学附属同济医院 放射科, 上海市催化医学前沿科学研究基地, 同济大学医学院生物医学工程与纳米科学研究院, 上海  200065
长余辉发光材料是一种能储存外界激发光能量、在激发光停止激发后仍能持续发光的材料。由于其长余辉寿命、无需原位激发、无组织背景信号干扰和高信噪比等优点,纳米长余辉发光材料广泛应用于生物医学检测、生物成像和肿瘤治疗领域。本文综述了近年来纳米长余辉发光材料在生物医学检测、生物成像和肿瘤治疗(化疗、光热治疗、光动力治疗和免疫治疗)方面的应用进展,并进一步探讨了其在生物医学应用中所面临的挑战,对其未来的发展趋势也进行了展望。
纳米长余辉发光材料 余辉发光 生物医学检测、生物成像 肿瘤治疗 persistent luminescent nanoparticles afterglow biomedical detection biological imaging tumor therapy 
发光学报
2024, 45(2): 252
作者单位
摘要
1 太原学院 材料与化学工程系,山西太原030032
2 哈尔滨工业大学 材料科学与工程学院,黑龙江哈尔滨150001
为了实现在无外部供能下对紫外光的有效探测,基于Ag修饰的Bi2O3纳米块(Ag/Bi2O3)纳米块制备了自供能紫外探测器。通过煅烧法制备Bi2O3纳米块,随后采用室温溶液法在其表面沉积Ag纳米粒子,进而成功制备了Ag/Bi2O3纳米块,且对所制备样品的晶体结构和微观形貌等进行了表征。结果表明,Ag/Bi2O3纳米块的平均尺寸约为1 μm,且Ag纳米粒子随机分布在Bi2O3纳米块表面。将涂覆Ag/Bi2O3纳米块的FTO作为工作电极,并进一步构建了自供能紫外探测器。在365 nm的紫外光照射下,Ag/Bi2O3纳米块紫外探测器能在零偏压下实现对紫外光的快速检测,这证实其具有自供能特性。相比于Bi2O3纳米块紫外探测器,Ag/Bi2O3纳米块紫外探测器的光电流得到明显提升,上升和下降时间分别缩短至29.1 ms和40.2 ms,并具有良好的循环稳定性。
紫外探测器 Bi2O3纳米块 Ag纳米粒子 自供能探测 ultraviolet photodetector Bi2O3 nanoblocks Ag nanoparticles self-powered detection 
光学 精密工程
2024, 32(5): 653
Author Affiliations
Abstract
1 Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko, Chaussee Blvd., BG-1784 Sofia, Bulgaria
2 Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., 11 bd., BG-1113 Sofia, Bulgaria
3 Institute of Optical Materials and Technologies, “Acad. Jordan Malinowski”, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., bl., 109, BG-1113 Sofia, Bulgaria
4 Dipartimento di Fisica, Università degli Studi della Calabria, Via P. Bucci, Cubo 33B, Rende (CS), IT-87036, Italy
We studied the effect of titanium dioxide (TiO2) nanoparticles (NPs) on dielectric behavior of Na+ ion-conducting salt-complexed polymer nanocomposite system formed from a binary polymer blend of poly(ethylene oxide) (PEO) and polyvinyl pyrrolidone (PVP), with the addition of both sodium metaperiodate (NaIO4) at concentration 10wt.% and TiO2 NPs of size ∼10nm, at concentrations 1, 2, 3, 4 and 5wt.%. Free standing nanocomposite PEO/PVP/NaIO4/TiO2 films (150μm) were characterized at room-temperature by analyzing their complex electrical impedance and dielectric spectra in the range 1Hz–1MHz. At the concentration of 3wt.% of TiO2 NPs, both ion conductivity and dielectric permittivity of the PEO/PVP/NaIO4/TiO2 ion-conducting dielectrics reach an enhancement by more than one order of magnitude as compared to nanoadditive-free case.
Dielectric properties sodium-ion-polymer electrolyte systems titanium dioxide (TiO2) nanoparticles nanocomposites KWW model 
Journal of Advanced Dielectrics
2024, 14(1): 2350021
作者单位
摘要
1 北京航空航天大学物理学院,北京 100191
2 澳大利亚国立大学物理学院电子材料工程研究室,澳大利亚堪培拉 2601
超分辨荧光成像技术因其能够突破光学衍射极限的限制,为生命科学研究带来全新的观察尺度而获得了诺贝尔化学奖。但是,传统的超分辨荧光显微镜需要极为复杂的光学系统来突破衍射极限,通常伴随着明显的光毒性和低时间分辨率,昂贵的造价以及日益复杂的操作限制了其在生物医学领域中的推广应用。因此,全球各大研究团队都在积极寻求具有近红外、高亮度和抗光漂白的替代荧光探针,并通过改善成像装置与算法,进一步拓展超分辨显微技术的应用范围。稀土元素纳米材料由于其独特而优异的物理化学特性,如显著的反斯托克斯光谱位移、无背景噪声、抗光漂白、光稳定性、低毒性和高成像穿透能力等,持续受到化学、物理学和材料学领域的广泛关注,是近期兴起的一种稳定性优异的无机荧光探针。本文首先简要介绍了上转换纳米颗粒的发光机制,然后讨论了纳米结构材料中实现光子上转换的主要限制。此外还介绍了镧系元素掺杂上转换纳米粒子在超分辨生物成像、分子检测等领域的应用,以及介绍了包括降低激光功率要求和耦合技术难度、提高激光直扫成像分辨率与速度、提高多路复用成像效率等应用技术优势。最后重点介绍了颗粒合成方面的主要挑战、可行的改进措施以及对未来发展的展望,为稀土纳米材料在生命科学成像领域的推广应用提供有力的理论基础与技术支撑。
荧光显微 超分辨成像 上转换纳米颗粒 镧系离子掺杂 
激光与光电子学进展
2024, 61(6): 0618018
作者单位
摘要
1 濮阳职业技术学院,河南大学濮阳工学院,河南 濮阳 457000
2 濮阳市中医院检验科,河南 濮阳 457000
设计合成了一种UFO状的具有类氧化酶性质的Au@MnO2纳米粒子。Au@MnO2可催化邻苯二胺(OPD)和氧气反应,生成具有荧光的2,3-二氨基吩嗪(DAP)。加入谷胱甘肽(GSH)后,GSH对MnO2的蚀刻导致纳米粒子的催化能力降低,从而使DAP的荧光强度减弱,可实现对GSH的荧光灵敏检测。在560 nm处的荧光强度与GSH浓度(0.01~10 μmol/L和50~1000 μmol/L)呈良好的线性关系,检测限为0.003 μmol/L。此外,该体系对GSH具有很好的选择性,不受其他离子和氨基酸的干扰。重要的是,该传感器不仅可检测水溶液中的GSH,而且可成功检测血清中的GSH。所提方法具有灵敏度高、抗干扰能力强、操作简单等优点,在生物分析和疾病诊断中具有一定的潜力。
荧光 Au@MnO2纳米粒子 类氧化酶 谷胱甘肽 
光学学报
2024, 44(4): 0428002
Author Affiliations
Abstract
1 Research Center for Humanoid Sensing, Research Institute of Intelligent Sensing, Zhejiang Lab, Hangzhou 311100, China
2 Nanophotonics Research Center, Institute of Microscale Optoelectronics & State Key Laboratory of Radio Frequency Heterogeneous Integration, Shenzhen University, Shenzhen 518060, China
3 Optics Research Group, ImPhys Department, Faculty of Applied Sciences, Delft University of Technology, Delft 2628 CJ, The Netherlands
Optical tweezers have proved to be a powerful tool with a wide range of applications. The gradient force plays a vital role in the stable optical trapping of nano-objects. The scalar method is convenient and effective for analyzing the gradient force in traditional optical trapping. However, when the third-order nonlinear effect of the nano-object is stimulated, the scalar method cannot adequately present the optical response of the metal nanoparticle to the external optical field. Here, we propose a theoretical model to interpret the nonlinear gradient force using the vector method. By combining the optical Kerr effect, the polarizability vector of the metallic nanoparticle is derived. A quantitative analysis is obtained for the gradient force as well as for the optical potential well. The vector method yields better agreement with reported experimental observations. We suggest that this method could lead to a deeper understanding of the physics relevant to nonlinear optical trapping and binding phenomena.
gradient forces nonlinear effect metallic nanoparticles 
Chinese Optics Letters
2024, 22(2): 023603
作者单位
摘要
1 北京理工大学机械与车辆学院激光微纳制造研究所,北京 100081
2 北京化工大学材料科学与工程学院,北京 100029
飞秒激光液相烧蚀技术具有局部、瞬时、超快、超强等典型极端制造特点,在精密加工和纳米材料合成领域展现了独特优势。然而,飞秒激光液相烧蚀是跨多时间、空间尺度,多物理化学现象耦合的复杂过程,现阶段研究缺乏全面有效手段、对机理理解不足。简要介绍了飞秒激光液相烧蚀的基本过程和相关超快观测技术的发展历程,并进一步总结了超快观测技术在光丝、溶剂化电子、等离子体、气泡演化等过程中的应用。最后总结了飞秒激光液相烧蚀方法、观测和机理研究存在的问题,并基于现有问题对未来飞秒激光液相烧蚀中可能应用的超快观测技术进行了展望。
激光技术 飞秒激光 液相烧蚀 极端制造 泵浦探测 超快动力学 纳米颗粒 
中国激光
2024, 51(4): 0402402
作者单位
摘要
1 喀什大学化学与环境科学学院新疆特色药食用植物资源化学实验室,新疆 喀什 844000
2 上海工程技术大学化学化工学院前沿医学技术研究院,上海 201620
采用共沉淀法制备了Bi2-xGa3.985O9∶1.5%Fe3+xEu3+(BGO∶1.5%Fe3+xEu3+x=0~2%)长余辉纳米粒子(PLNP),详细研究了Eu3+掺杂浓度及煅烧温度对BGO∶1.5%Fe3+ PLNP晶体结构和光学性质的影响。结果显示,最佳的PLNP组成为Bi1.99Ga3.985O9∶1.5%Fe3+,1%Eu3+,属于莫来石晶体结构,发射峰处于798 nm,在900 ℃煅烧1 h时,可获得高纯度的BGO∶1.5%Fe3+,1%Eu3+ PLNP,其平均电子陷阱能级深度为0.676 eV。与Fe3+单掺杂BGO∶1.5%Fe3+ PLNP相比,Eu3+共掺杂BGO∶1.5%Fe3+,1%Eu3+ PLNP后,荧光寿命(τav)从13.77 s增大至15.56 s,余辉发光时间从3 h延长至8 h以上。由于共掺杂BGO∶1.5%Fe3+,1%Eu3+ PLNP中存在从Eu3+到Fe3+的能量传递,共掺杂PLNP的余辉强度增大,发光时间延长。制备了长波长发射、具有余辉发光性能的BGO∶1.5%Fe3+,1%Eu3+ PLNP,该材料在生物成像、疾病检测及生物传感等领域具有巨大的应用潜力。
材料 近红外发光 长余辉纳米粒子 共掺杂 镓酸铋 
光学学报
2024, 44(2): 0216001

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