{"id":5378,"date":"2026-02-25T09:39:04","date_gmt":"2026-02-25T02:39:04","guid":{"rendered":"https:\/\/www2.si.mahidol.ac.th\/department\/biochemistry\/?p=5378"},"modified":"2026-03-30T13:22:37","modified_gmt":"2026-03-30T06:22:37","slug":"distinct-systemic-immune-responses-in-asymptomatic-and-symptomatic-dengue-virus-infection-5","status":"publish","type":"post","link":"https:\/\/www2.si.mahidol.ac.th\/department\/biochemistry\/en\/distinct-systemic-immune-responses-in-asymptomatic-and-symptomatic-dengue-virus-infection-5\/","title":{"rendered":"Anti-cancer activity of Kaempferia galanga L.\u2013loaded polydopamine nanoparticles against colorectal cancer"},"content":{"rendered":"
Paweena Dana, Anukul Taweechaipaisankul, Yodsathorn Wongngam, Suttipun Sungsuwan, Walailuk Chonniyom, Saksorn Klibaim, Prattana Tanyapanyachon, Monthira Rattanatayarom, Onuma Phoraksa, Udom Asawapirom, Primana Punnakitikashem<\/strong>, Duangporn Polpanich, Nattika Saengkrit<\/p>\n Kaempferia galanga L. (KGL) is an aromatic ginger that has been used as a medicinal plant. Specifically, KGL possesses anti-inflammatory, antioxidant, anti-bacterial, and anti-cancer effects. However, the key component of KGL, ethyl p\u2011methoxy cinnamate (EPMC), is insoluble in water, resulting in low bioavailability. Hence, a nano-drug delivery system is used to enhance KGL activities. This study aimed to employ polydopamine (PDA) nanoparticles as a carrier for KGL delivery to improve its anti-cancer activity against colorectal cancer cells. PDA- and PDA nanoparticle\u2013loaded KGL (PDA-KGL) were synthesized using a spontaneous oxidation process. The physicochemical properties of the PDA-KGL were characterized by dynamic light scattering methods. The anti-cancer activity of PDA-KGL was evaluated in HT-29, a colorectal cancer (CRC) cell line. Average hydrodynamic sizes of PDA and PDA-KGL were 236.2 \u00b1 1.2 and 316.6 \u00b1 2.0 nm, respectively, and the zeta potential of PDA and PDA-KGL were -23.0 \u00b1 0.4 and -39.5 \u00b1 0.6 mV, respectively. The morphology of PDA-KGL observed under TEM was spherical in shape. Anti-proliferative activity was monitored in HT-29 cells using MTT and 3D tumor spheroid assays. PDA-KGL strongly inhibited cell viability of HT-29 cells compared to free KGL and PDA treatments. PDA-KGL induced apoptosis in HT-29 cells as shown by an Annexin V binding assay. In addition, PDA-KGL suppressed the invasive ability of HT-29 cells compared to free KGL or PDA, which was determined by a transwell invasion assay. Taken together, it implies that PDA-KGL might be used as a nano-drug delivery approach for colorectal cancer treatment. \u00a9 2025 The Author(s)<\/p>\nAbstract<\/h2>\n