Abd El-Raheem Hany, Alawam Abdullah S, Rudayni Hassan A, Allam Ahmed A, Helim Rabiaa, Fafa Sarra, Yahia Sarah, Mahmoud Rehab, Alahmad Waleed
Environmental Engineering Program, Zewail City of Science and Technology, October Gardens, sixth of October City, 12578 Giza, Egypt.
Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia.
ACS Omega. 2025 Jul 31;10(31):34106-34122. doi: 10.1021/acsomega.5c05652. eCollection 2025 Aug 12.
Programmed cell death (apoptosis) safeguards tissue homeostasis, and its dysregulation is a hallmark of cancer, neurodegeneration, and immune disorders. Detecting the earliest biochemical signatures of apoptosis therefore offers a route to sharper diagnosis, real-time therapy monitoring, and data-driven drug discovery. Electrochemical biosensors are uniquely suited to this task because they translate molecular recognition events into electrical signals that are rapid, miniaturizable, and inherently compatible with point-of-care formats. Yet their clinical translation is still limited by three persistent hurdles: (i) selective recognition in protein-rich or highly variable matrices, (ii) long-term signal stability under continuous operation, and (iii) a lack of unified analytical performance standards that hampers cross-platform benchmarking. This critical review charts the most recent material, biochemical, and microelectronic innovations that are beginning to erode these barriers, and identifies emerging strategiesfrom nanostructured electrode interfaces to signal processing that could propel electrochemical apoptosis sensing from proof-of-concept prototypes to reliable bedside tools. By aligning unresolved challenges with promising technological solutions, we aim to guide interdisciplinary efforts toward next-generation diagnostics capable of real-time apoptosis surveillance in complex biological settings.
程序性细胞死亡(凋亡)维持着组织的稳态,其失调是癌症、神经退行性疾病和免疫紊乱的标志。因此,检测凋亡最早的生化特征为更精确的诊断、实时治疗监测和数据驱动的药物发现提供了一条途径。电化学生物传感器特别适合这项任务,因为它们将分子识别事件转化为电信号,这些电信号快速、可小型化,并且本质上与即时护理形式兼容。然而,它们的临床转化仍然受到三个持续存在的障碍的限制:(i)在富含蛋白质或高度可变的基质中进行选择性识别;(ii)连续运行下的长期信号稳定性;(iii)缺乏统一的分析性能标准,这阻碍了跨平台基准测试。这篇综述文章梳理了最近开始突破这些障碍的材料、生化和微电子方面的创新,并确定了新兴策略——从纳米结构电极界面到信号处理,这些策略可以推动电化学凋亡传感从概念验证原型发展成为可靠的床边工具。通过将未解决的挑战与有前景的技术解决方案相结合,我们旨在引导跨学科努力,开发能够在复杂生物环境中进行实时凋亡监测的下一代诊断方法。
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