1.FDFT1 Acts as a Negative Regulator of Autophagy by Modulating AMPK–ULK1 Signaling in Hepatocellular Carcinoma Cells
Thi Ha NGUYEN ; Yongook LEE ; Minh Tuan NGUYEN ; Seoung Gyu CHOI ; Phuong Ngan NGUYEN ; Boram KIM ; Eun Ji KIM ; Gyeoung Jin KANG ; Mi Kyung PARK ; Sung Hoon LEE ; Sang Geon KIM ; Chang Hoon LEE
Biomolecules & Therapeutics 2026;34(3):632-640
Autophagy is a conserved catabolic process that degrades proteins and damaged organelles to maintain cellular homeostasis, and its role in cancer depends on stage and context. Farnesyl-diphosphate farnesyltransferase 1 (FDFT1) is an essential enzyme in the sterol branch of the mevalonate pathway, but its functions in hepatocellular carcinoma (HCC) and in the regulation of autophagy remain poorly understood. In this study, we show that FDFT1 acts as a negative regulator of autophagy in HCC cells. Loss of FDFT1 led to increased autophagosome formation and fusion with lysosomes, whereas its overexpression suppressed both basal and induced autophagy. These changes were associated with AMPK–ULK1 signaling, suggesting that FDFT1 influences a central pathway controlling autophagy. Our findings connect cholesterol metabolism with autophagy regulation and tumor growth, highlighting FDFT1 as a potential prognostic marker and therapeutic target in liver cancer.
2.Sesquiterpenes from Curcuma zedoaria (Christm.) Rosc. Rhizomes and Their Alpha-Glucosidase Inhibitory Effects
Ngan Thi TRAN ; Phuong Nguyen Thi THU ; Mai-Ngan Thi LE ; Quynh-Mai Thi NGO
Natural Product Sciences 2024;30(4):300-303
Curcuma zedoaria (Christm.) Rosc. is a popular traditional herb to treat digestive disorders in Asian tropical countries. Previous studies indicated the presence of sesquiterpenoids, diterpenoids, and curcuminoids with various bioactivities. To enrich the phytocomposition data of this plant, this investigation was conducted.The dried rhizomes of C. zedoaria were collected in Hai Phong City (Vietnam), extracted with methanol and fractionated with n-hexane, CH2Cl2 , and EtOAc. Compounds were isolated from n-hexane soluble fraction by open column chromatography combined with thin layer chromatography from fraction n-hexane. Their chemical structures were elucidated by 1D, and 2D NMR spectra and comparison with reported data. As a result, a phytochemical investigation was conducted to isolate six sesquiterpenes from C. zedoaria. Their chemical structures were elucidated to be curcumenol (1), procurcumenol (2), neoprocurcumenol (3), 13-hydroxygermacrone (4), zederone (5), and curcumalactone (6). Among isolated compounds, compounds 1, 2, 4, and 5 were reported from C. zedoaria. Meanwhile, neoprocurcumenol (3) and curcumalactone (6) are isolated from this species for the first time. Compound 5 exhibited a mild inhibitory effect on α-glucosidase with an IC50 of 99.45 ± 0.50 μg/mL.
3.Sesquiterpenes from Curcuma zedoaria (Christm.) Rosc. Rhizomes and Their Alpha-Glucosidase Inhibitory Effects
Ngan Thi TRAN ; Phuong Nguyen Thi THU ; Mai-Ngan Thi LE ; Quynh-Mai Thi NGO
Natural Product Sciences 2024;30(4):300-303
Curcuma zedoaria (Christm.) Rosc. is a popular traditional herb to treat digestive disorders in Asian tropical countries. Previous studies indicated the presence of sesquiterpenoids, diterpenoids, and curcuminoids with various bioactivities. To enrich the phytocomposition data of this plant, this investigation was conducted.The dried rhizomes of C. zedoaria were collected in Hai Phong City (Vietnam), extracted with methanol and fractionated with n-hexane, CH2Cl2 , and EtOAc. Compounds were isolated from n-hexane soluble fraction by open column chromatography combined with thin layer chromatography from fraction n-hexane. Their chemical structures were elucidated by 1D, and 2D NMR spectra and comparison with reported data. As a result, a phytochemical investigation was conducted to isolate six sesquiterpenes from C. zedoaria. Their chemical structures were elucidated to be curcumenol (1), procurcumenol (2), neoprocurcumenol (3), 13-hydroxygermacrone (4), zederone (5), and curcumalactone (6). Among isolated compounds, compounds 1, 2, 4, and 5 were reported from C. zedoaria. Meanwhile, neoprocurcumenol (3) and curcumalactone (6) are isolated from this species for the first time. Compound 5 exhibited a mild inhibitory effect on α-glucosidase with an IC50 of 99.45 ± 0.50 μg/mL.
4.Sesquiterpenes from Curcuma zedoaria (Christm.) Rosc. Rhizomes and Their Alpha-Glucosidase Inhibitory Effects
Ngan Thi TRAN ; Phuong Nguyen Thi THU ; Mai-Ngan Thi LE ; Quynh-Mai Thi NGO
Natural Product Sciences 2024;30(4):300-303
Curcuma zedoaria (Christm.) Rosc. is a popular traditional herb to treat digestive disorders in Asian tropical countries. Previous studies indicated the presence of sesquiterpenoids, diterpenoids, and curcuminoids with various bioactivities. To enrich the phytocomposition data of this plant, this investigation was conducted.The dried rhizomes of C. zedoaria were collected in Hai Phong City (Vietnam), extracted with methanol and fractionated with n-hexane, CH2Cl2 , and EtOAc. Compounds were isolated from n-hexane soluble fraction by open column chromatography combined with thin layer chromatography from fraction n-hexane. Their chemical structures were elucidated by 1D, and 2D NMR spectra and comparison with reported data. As a result, a phytochemical investigation was conducted to isolate six sesquiterpenes from C. zedoaria. Their chemical structures were elucidated to be curcumenol (1), procurcumenol (2), neoprocurcumenol (3), 13-hydroxygermacrone (4), zederone (5), and curcumalactone (6). Among isolated compounds, compounds 1, 2, 4, and 5 were reported from C. zedoaria. Meanwhile, neoprocurcumenol (3) and curcumalactone (6) are isolated from this species for the first time. Compound 5 exhibited a mild inhibitory effect on α-glucosidase with an IC50 of 99.45 ± 0.50 μg/mL.
5.Sesquiterpenes from Curcuma zedoaria (Christm.) Rosc. Rhizomes and Their Alpha-Glucosidase Inhibitory Effects
Ngan Thi TRAN ; Phuong Nguyen Thi THU ; Mai-Ngan Thi LE ; Quynh-Mai Thi NGO
Natural Product Sciences 2024;30(4):300-303
Curcuma zedoaria (Christm.) Rosc. is a popular traditional herb to treat digestive disorders in Asian tropical countries. Previous studies indicated the presence of sesquiterpenoids, diterpenoids, and curcuminoids with various bioactivities. To enrich the phytocomposition data of this plant, this investigation was conducted.The dried rhizomes of C. zedoaria were collected in Hai Phong City (Vietnam), extracted with methanol and fractionated with n-hexane, CH2Cl2 , and EtOAc. Compounds were isolated from n-hexane soluble fraction by open column chromatography combined with thin layer chromatography from fraction n-hexane. Their chemical structures were elucidated by 1D, and 2D NMR spectra and comparison with reported data. As a result, a phytochemical investigation was conducted to isolate six sesquiterpenes from C. zedoaria. Their chemical structures were elucidated to be curcumenol (1), procurcumenol (2), neoprocurcumenol (3), 13-hydroxygermacrone (4), zederone (5), and curcumalactone (6). Among isolated compounds, compounds 1, 2, 4, and 5 were reported from C. zedoaria. Meanwhile, neoprocurcumenol (3) and curcumalactone (6) are isolated from this species for the first time. Compound 5 exhibited a mild inhibitory effect on α-glucosidase with an IC50 of 99.45 ± 0.50 μg/mL.
6.Sesquiterpenes from Curcuma zedoaria (Christm.) Rosc. Rhizomes and Their Alpha-Glucosidase Inhibitory Effects
Ngan Thi TRAN ; Phuong Nguyen Thi THU ; Mai-Ngan Thi LE ; Quynh-Mai Thi NGO
Natural Product Sciences 2024;30(4):300-303
Curcuma zedoaria (Christm.) Rosc. is a popular traditional herb to treat digestive disorders in Asian tropical countries. Previous studies indicated the presence of sesquiterpenoids, diterpenoids, and curcuminoids with various bioactivities. To enrich the phytocomposition data of this plant, this investigation was conducted.The dried rhizomes of C. zedoaria were collected in Hai Phong City (Vietnam), extracted with methanol and fractionated with n-hexane, CH2Cl2 , and EtOAc. Compounds were isolated from n-hexane soluble fraction by open column chromatography combined with thin layer chromatography from fraction n-hexane. Their chemical structures were elucidated by 1D, and 2D NMR spectra and comparison with reported data. As a result, a phytochemical investigation was conducted to isolate six sesquiterpenes from C. zedoaria. Their chemical structures were elucidated to be curcumenol (1), procurcumenol (2), neoprocurcumenol (3), 13-hydroxygermacrone (4), zederone (5), and curcumalactone (6). Among isolated compounds, compounds 1, 2, 4, and 5 were reported from C. zedoaria. Meanwhile, neoprocurcumenol (3) and curcumalactone (6) are isolated from this species for the first time. Compound 5 exhibited a mild inhibitory effect on α-glucosidase with an IC50 of 99.45 ± 0.50 μg/mL.
7.A preliminary research on the effect of Phunamine on some athlete\u2019s standards
Ngan Thi Kim Nguyen ; Binh Viet Truong ; Phuong Quy Le ; Nam Huy Nguyen
Journal of Medical and Pharmaceutical Information 2005;0(10):24-27
Background: To improve the physical fitness of athletes is one of the essential requirements of the Vietnam Sports associations. Research to discover the functional foods to improve the physical fitness of athletes in general, in particular athletic athletes is an interest to scientists. Objective: Evaluation of effect of Phunamine on some of the male, female athlete\u2019s biomedicine and physical fitness standards. Subject and methods: A controlled, double-blind, randomized, clinical experiment was conducted on 30 athletes of the Hanoi Athletic Group. They were then divided into 2 groups: research group: 20 athletes (10 men, 10 women) were administered with 4 phunamine pills per day; control group: 10 athletes (5 men, 5 women) were each administered with 4 placebo pills per day. The 2 groups had tests performed and followed up 30 days pre and post administration. Results: Max-min blood pressure change between the two groups was not significant (t(\u03b1)>0.5). Testosterone concentration change and physical fitness test (run 100m, 400m) of Phunamine dosed group were higher than the placebo group (t(\u03b1)<0.5). Conclusion: Phunamine has the effects of increasing testosterone concentration and improving physical fitness of athletes however the drug has no effect on blood pressure index of athletic athletes.
Phunamine
;
functional foods
;
athletes

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