PMID- 33662415 OWN - NLM STAT- MEDLINE DCOM- 20210721 LR - 20210721 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 178 DP - 2021 May 1 TI - Inhibition behavior of Sennoside A and Sennoside C on amyloid fibrillation of human lysozyme and its possible mechanism. PG - 424-433 LID - S0141-8130(21)00512-2 [pii] LID - 10.1016/j.ijbiomac.2021.02.213 [doi] AB - Amyloid proteins were recognized as the crucial cause of many senile diseases. In this study, the inhibitory effects of Sennoside A (SA) and Sennoside C (SC) on amyloid fibrillation were evaluated by the combination of biophysical approaches and molecular docking tool using human lysozyme (HL) as amyloid-forming model. The results of thioflavin-T (ThT), 8-anilino-1-naphthalenesulfonic acid (ANS) and congo red (CR) assays indicated that both SA and SC could inhibit the amyloid fibrillation of HL in a dose-dependent manner. The IC(50) value of SA and SC on HL fibrillation was 200.09 muM and 186.20 muM, respectively. These findings were further verified by transmission electron microscopy (TEM) and atomic force microscopy (AFM), which showed that the addition of SA or SC could sharply reduce the amyloid fibrillation of HL. Additionally, the interactions of HL with SA and SC were investigated by steady-state fluorescence spectra and molecular docking studies. The results suggested that both SA and SC could bind to the binding pocket of HL and form a stable complex mainly via hydrogen bonds, van-der-Waals forces and hydrophobic interactions. In conclusion, our experiments revealed that both SA and SC can significantly inhibit amyloid fibrillation of HL. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Gao, Wen AU - Gao W AD - Department of Pharmacy, Liaocheng University, Liaocheng, Shandong 252000, China. FAU - Jin, Li AU - Jin L AD - Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China. FAU - Liu, Chunhong AU - Liu C AD - Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China. FAU - Zhang, Ning AU - Zhang N AD - Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China. Electronic address: zhangning1111@126.com. FAU - Zhang, Ruiyan AU - Zhang R AD - Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China. Electronic address: zry147896@163.com. FAU - Bednarikova, Zuzana AU - Bednarikova Z AD - Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Kosice, Slovakia. FAU - Gazova, Zuzana AU - Gazova Z AD - Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Kosice, Slovakia. FAU - Bhunia, Anirban AU - Bhunia A AD - Department of Biophysics, Bose Institute, P-1/12 CIT Scheme VII (M), 700054 Kolkata, India. FAU - Siebert, Hans-Christian AU - Siebert HC AD - RI-B-NT Research Institute of Bioinformatics and Nanotechnology, Franziusallee 177, 24148 Kiel, Germany. FAU - Dong, Huijun AU - Dong H AD - Department of Pharmacy, Liaocheng University, Liaocheng, Shandong 252000, China. Electronic address: donghuijun_747@163.com. LA - eng PT - Journal Article DEP - 20210301 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Amyloid) RN - 0 (Protein Aggregates) RN - 0 (Sennosides) RN - 8013-11-4 (Senna Extract) RN - EC 3.2.1.17 (Muramidase) RN - EC 3.2.1.17 (lysozyme C, human) RN - UQ166P8802 (sennoside C) SB - IM MH - Amyloid/*chemistry MH - Humans MH - Muramidase/*chemistry MH - *Protein Aggregates MH - Senna Extract/*chemistry MH - Sennosides/*chemistry OTO - NOTNLM OT - Amyloid fibrillation OT - Sennoside A OT - Sennoside C EDAT- 2021/03/05 06:00 MHDA- 2021/07/22 06:00 CRDT- 2021/03/04 20:12 PHST- 2020/09/27 00:00 [received] PHST- 2021/02/24 00:00 [revised] PHST- 2021/02/27 00:00 [accepted] PHST- 2021/03/05 06:00 [pubmed] PHST- 2021/07/22 06:00 [medline] PHST- 2021/03/04 20:12 [entrez] AID - S0141-8130(21)00512-2 [pii] AID - 10.1016/j.ijbiomac.2021.02.213 [doi] PST - ppublish SO - Int J Biol Macromol. 2021 May 1;178:424-433. doi: 10.1016/j.ijbiomac.2021.02.213. Epub 2021 Mar 1.