發明
中華民國
097106729
I 389695
功能性奈米粒子抗生素及其製法
國立交通大學
2013/03/21
本發明提出可抑制細菌生長的奈米光熱療法。即將具有吸收近紅外光功能的奈米粒子表面共價修飾上萬古黴素後,以此功能性奈米粒子探針辨識致病菌,在近紅外光波長照射下可用為光熱試劑。實驗結果證明利用此功能性奈米粒子抗生素在辨識致病菌及做為光熱試劑時,可有效抑制他們所辨識的致病菌 (如革蘭氏陽性菌、革蘭氏陰性菌及抗藥性細菌等等) 之生長。並且在近紅外光光源照射數分鐘內,即能使此功能性奈米粒子因為吸收了近紅外光光源能量後進一步釋放出熱能,導致被此功能性奈米粒子辨識的細菌因為受到來自奈米粒子熱能的傳遞而產生過高熱現象,而導致細菌死亡。實驗結果顯示此技術已可有效抑制致病菌的生長,並有潛力應用於輔助醫學臨床上治療細菌感染的方法。 This invention describes an approach by employing vancomycin coated nanoparticles capable of absorbing near infrared (NIR) radiation as the photothermal agents for pathogenic bacteria. We have demonstrated that our functional nanoparticle-based antibiotics could be used as the affinity probes and the photothermal agents to effectively inhibit the cell growth of pathogenic bacteria under NIR irradiation. This approach does not only inhibit the cell growth of Gram-positive and Gram-negative bacteria, but it also can inhibit the cell growth of antibiotic-resistant bacteria. This results from the ability of the functional nanoparticles that can selectively attach on the cell walls of their target bacteria, followed by heat transfer to their targeted bacteria under NIR irradiation. This hyperthermia approach may potentially become a new adjuvant therapeutic method for bacterial infections.
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