In vivo dual-axis confocal microscopy of 5-ALA-induced PpIX to guide low-grade glioma resections

5-ALA 诱导的 PpIX 体内双轴共聚焦显微镜指导低级别胶质瘤切除

基本信息

批准号：
10684738
负责人：
Jonathan T.C. Liu
金额：
$ 53.94万
依托单位：
UNIVERSITY OF WASHINGTON
依托单位国家：
美国
项目类别：
财政年份：
2020
资助国家：
美国
起止时间：
2020-06-01 至 2025-05-31
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10684738
关键词：
Adult Aminolevulinic Acid Area Biological Biophotonics Child Clinical Clinical Research Collection Computer software Confocal Microscopy Data Devices Diffuse Engineering Excision FDA approved Fluorescence Future Glioma Histology Image Image Analysis Image-Guided Surgery Imaging Techniques Imaging technology Immunohistochemistry Location Machine Learning Magnetic Resonance Imaging Mechanics Methods Microscope Microscopic Microscopy Molecular Nature Neurologic Neuronavigation Operative Surgical Procedures Optics Outcome Pathologist Patient-Focused Outcomes Patients Pattern Performance Postoperative Period Procedures Progression-Free Survivals Proliferating Public Health Quality of life Randomized Recurrence Recurrent disease Reporting Residual state Resolution Sampling Sampling Biases Specimen Speed Sterility Surgeon Surgical margins Techniques Technology Time Tissues Training Tumor Burden Validation Visualization automated algorithm brain tissue clinically relevant design fluorescence-guided surgery high resolution imaging image guided image processing imaging modality improved in vivo indexing industry partner innovation instrumentation lens microscopic imaging neoplastic cell neurosurgery overexpression prototype radiological imaging survival outcome tumor

项目摘要

Summary Extent-of-resection is correlated with glioma patient outcomes such as progression-free survival. Image- guidance technologies, based on MRI and now fluorescence-guided surgery (FGS), have been developed to improve the surgeon’s ability to visualize gross tumor margins. However, there are fundamental limitations to wide-field imaging methods such as MRI and FGS, such as poor sensitivity to detect disseminated tumor cells at the infiltrative margins of diffuse gliomas, as well as the non-quantitative and subjective nature of image interpretation. With the emergence of FGS using 5-ALA, and its recent approval by the FDA in 2017, the gap between low-grade glioma (LGG) and high-grade glioma (HGG) patients, in terms of extent of resection, will likely widen since LGGs rarely generate sufficient PpIX fluorescence to be detected via wide-field FGS. Consequently, there is a clear need for improved intraoperative techniques with the sensitivity to detect and quantify residual LGGs at the margins of the tumor cavity in order to improve the extent of resection and delay recurrence. We have shown that high-resolution confocal microscopy has the sensitivity to visualize the sparse sub-cellular expression of PpIX in LGG patients treated with 5-ALA, even beyond the radiographic margins. Therefore, we will optimize a handheld optical-sectioning microscope to image 5-ALA-induced PpIX at the final resection margins in LGG patients, together with real-time video mosaicking to facilitate the imaging of large tissue areas, which will minimize sampling bias when imaging heterogeneous brain tissues (Aim 1). In order to facilitate the clinical acceptance of these techniques, we will establish a relationship between the microscopic patterns of PpIX expression and well-established biological metrics such as tumor burden and proliferative index (Aim 2). Finally, we will explore the hypothesis that quantitative microscopic imaging of PpIX of the resection margins is predictive of extent of resection, as currently defined by post-operative MRI, which would suggest that it has value for optimizing resections to minimize and/or delay recurrence (Aim 3). Collectively, these results will pave the way for future randomized controlled clinical studies to optimize resection procedures and outcomes for LGG patients (adults and children), many of whom can have good survival outcomes and quality of life.

概括切除范围与神经胶质瘤患者的预后相关，例如无进展生存期。基于 MRI 和现在的荧光引导手术 (FGS) 的引导技术已经发展到提高外科医生观察肿瘤边缘的能力然而，存在根本的局限性。 MRI 和 FGS 等宽视野成像方法，例如检测播散性肿瘤细胞的灵敏度较差在弥漫性胶质瘤的浸润边缘，以及图像的非定量和主观性质随着使用 5-ALA 的 FGS 的出现及其最近于 2017 年获得 FDA 的批准，这一差距出现了。低级别胶质瘤（LGG）和高级别胶质瘤（HGG）患者之间，就切除范围而言，由于 LGG 很少产生足够的 PpIX 荧光以通过广域 FGS 检测到，因此可能会变宽。经过测试，显然需要改进术中技术，提高检测和检测的灵敏度定量瘤腔边缘残留LGG，以提高切除范围和延迟时间我们已经证明高分辨率共聚焦显微镜具有可视化稀疏的灵敏度。使用 5-ALA 治疗的 LGG 患者中 PpIX 的亚细胞表达，甚至超出放射线边缘。因此，我们将优化手持式光学切片显微镜，以在最终时对 5-ALA 诱导的 PpIX 进行成像 LGG 患者的切除边缘，以及实时视频拼接，以方便大范围成像组织区域，这将最大限度地减少对异质脑组织进行成像时的采样偏差（目标 1）。为了促进这些技术的临床接受，我们将建立微观之间的关系 PpIX 表达模式和成熟的生物学指标，例如肿瘤负荷和增殖指数（目标 2）最后，我们将探讨切除 PpIX 的定量显微成像的假设。根据目前术后 MRI 的定义，切缘可预测切除范围，这表明它对于优化切除以最小化和/或延迟复发具有价值（总的来说，这些结果）。将为未来优化切除程序和结果的随机临床研究铺平道路对于 LGG 患者（成人和儿童），其中许多人可以获得良好的生存结果和生活质量。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Miniature line-scanned dual-axis confocal microscope for versatile clinical use.

微型线扫描双轴共焦显微镜，适合多种临床用途。

DOI：
10.1364/boe.503478
发表时间：
2023
期刊：
Biomedical optics express
影响因子：
3.4
作者：
Bishop,KevinW;Hu,Bingwen;Vyawhare,Rajat;Yang,Zelin;Liang,DavidC;Gao,Gan;Baraznenok,Elena;Han,Qinghua;Lan,Lydia;Chow,SarahSL;Sanai,Nader;Liu,JonathanTC
通讯作者：
Liu,JonathanTC

In vivo microscopy as an adjunctive tool to guide detection, diagnosis, and treatment.

DOI：
10.1117/1.jbo.27.4.040601
发表时间：
2022-04
期刊：
JOURNAL OF BIOMEDICAL OPTICS
影响因子：
3.5
作者：
Bishop, Kevin W.;Maitland, Kristen C.;Rajadhyaksha, Milind;Liu, Jonathan T. C.
通讯作者：
Liu, Jonathan T. C.

Fluorescent labeling of abundant reactive entities (FLARE) for cleared-tissue and super-resolution microscopy.

用于透明组织和超分辨率显微镜的丰富反应实体 (FLARE) 的荧光标记。

DOI：
10.1038/s41596-021-00667-2
发表时间：
2022
期刊：
Nature protocols
影响因子：
14.8
作者：
Lee,MinYen;Mao,Chenyi;Glaser,AdamK;Woodworth,MarcusA;Halpern,AaronR;Ali,Adilijiang;Liu,JonathanTC;Vaughan,JoshuaC
通讯作者：
Vaughan,JoshuaC

Multiresolution nondestructive 3D pathology of whole lymph nodes for breast cancer staging.