Harine A, Ranjani S, Hemalatha S
School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, Tamil Nadu, 600048, India.
BMC Biotechnol. 2025 Feb 20;25(1):18. doi: 10.1186/s12896-025-00952-y.
Candida species are commensal fungi that can become opportunistic pathogens under specific host and environmental conditions. The emergence of multidrug-resistant Candida strains poses a significant challenge. Nanotechnology represents a cutting-edge field offering precise and targeted delivery systems for combating fungal infections, leveraging the unique properties of plant-derived bioactive compounds. This investigation employed a biogenic approach utilizing polyherbal leaf extracts from Citrus limon and Citrus medica, known for their abundant Citral content.
Citrus sp. extracts were used to synthesize Citrusfusion silver nanoparticles (CitAgNPs) through a green synthesis method. Characterization of CitAgNPs was carried out using advanced analytical methods ensuring the quality, uniformity, size, and charge. The synthesized CitAgNPs exhibited non toxic effect when tested on Vigna radiata and Danio rerio, highlighting their potential for sustainability and safe therapeutic use. Antifungal assays demonstrated the potent efficacy of CitAgNPs in various Candida strains, with low MIC and MFC. CitAgNPs exhibited remarkable biofilm inhibition capabilities and elucidated specific mechanisms of action in Candida species, surpassing the performance of fluconazole.
This study underscores the immense potential of nanotechnology-driven approaches harnessing Citrus leaf extract for synthesizing highly effective antifungal nanoparticles. The fusion of biogenic nanoparticles with Citrus bioactive compounds presents a sustainable strategy for addressing the escalating challenge of azole-resistant Candida infections. The research outcomes suggest that CitAgNPs have promising applications in inhibiting Candida biofilms, offering potential solutions for infections caused by diaper rashes and onychomycosis, providing safe and effective alternatives to antifungal therapies.
念珠菌属是共生真菌,在特定的宿主和环境条件下可成为机会性病原体。多重耐药念珠菌菌株的出现构成了重大挑战。纳米技术是一个前沿领域,利用植物源生物活性化合物的独特性质,提供精确且靶向的递送系统来对抗真菌感染。本研究采用生物合成方法,利用富含柠檬醛的柠檬和枸橼的多草药叶提取物。
通过绿色合成方法,用柑橘属植物提取物合成了柑橘融合银纳米颗粒(CitAgNPs)。使用先进的分析方法对CitAgNPs进行表征,以确保其质量、均匀性、尺寸和电荷。合成的CitAgNPs在对绿豆和斑马鱼的测试中表现出无毒作用,突出了其可持续性和安全治疗用途的潜力。抗真菌试验表明,CitAgNPs对各种念珠菌菌株具有强效功效,最低抑菌浓度(MIC)和最低杀菌浓度(MFC)较低。CitAgNPs表现出显著的生物膜抑制能力,并阐明了在念珠菌属中的具体作用机制,其性能超过氟康唑。
本研究强调了利用纳米技术驱动的方法,借助柑橘叶提取物合成高效抗真菌纳米颗粒的巨大潜力。生物合成纳米颗粒与柑橘生物活性化合物的融合,为应对唑类耐药念珠菌感染不断升级的挑战提供了一种可持续策略。研究结果表明,CitAgNPs在抑制念珠菌生物膜方面具有广阔的应用前景,为尿布疹和甲癣引起的感染提供了潜在解决方案,为抗真菌治疗提供了安全有效的替代方案。