PMID- 30419326 OWN - NLM STAT- MEDLINE DCOM- 20190410 LR - 20190410 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 123 DP - 2019 Feb 15 TI - Understanding the nano-bio interactions using real-time surface plasmon resonance tool. PG - 97-107 LID - S0141-8130(18)33030-7 [pii] LID - 10.1016/j.ijbiomac.2018.11.039 [doi] AB - Our current understanding of the biophysicochemical interactions at nano-bio interfaces is still very limited. Surface plasmon resonance (SPR) is a powerful tool for understanding the real-time kinetics of protein binding on the surface of nanoparticles (NPs) but has been least exploited for this purpose. In this study, we demonstrated the interaction of negatively charged poly lactic-co-glycolic acid (PLGA) NPs and positively charged chitosan oligosaccharide (COS)-coated PLGA NPs with two model proteins, namely bovine serum albumin (BSA) and hen egg white lysozyme (LYZ), at the physiological pH of 7.4. Various biophysical characterization techniques were employed to elucidate the influence of surface charge of NPs on protein interaction. SPR investigations revealed the binding affinity and binding kinetics involved in nanoparticle-protein interactions. These results confirmed that the affinity of both types of NPs towards positively charged LYZ was much greater than that for negatively charged BSA, which was also in accordance with the results of the adsorption studies. Our results demonstrate that the surface properties of the interacting species play a dominant role during protein-nanoparticle interactions, apart from the net charge on their individual surfaces. The information obtained from this study adds significant value to the biophysicochemical toolbox for characterization of nano-bio interactions. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Atale, Sonal S AU - Atale SS AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, NP Marg, Matunga, Mumbai 400019, India. FAU - Dyawanapelly, Sathish AU - Dyawanapelly S AD - Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India. FAU - Jagtap, Dhanashree D AU - Jagtap DD AD - Division of Structural Biology, National Institute for Research in Reproductive Health (Indian Council of Medical Research), Jehangir Merwanji Street, Parel, Mumbai 400012, India. FAU - Jain, Ratnesh AU - Jain R AD - Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai 400019, India. Electronic address: rd.jain@ictmumbai.edu.in. FAU - Dandekar, Prajakta AU - Dandekar P AD - Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, NP Marg, Matunga, Mumbai 400019, India. Electronic address: pd.jain@ictmumbai.edu.in. LA - eng PT - Journal Article DEP - 20181109 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Oligosaccharides) RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - 27432CM55Q (Serum Albumin, Bovine) RN - 9012-76-4 (Chitosan) RN - EC 3.2.1.- (hen egg lysozyme) RN - EC 3.2.1.17 (Muramidase) SB - IM MH - Adsorption/drug effects MH - Chitosan/chemistry MH - Kinetics MH - Muramidase/chemistry MH - Nanoparticles/*chemistry MH - Oligosaccharides/chemistry MH - Polylactic Acid-Polyglycolic Acid Copolymer/chemistry MH - Protein Interaction Domains and Motifs/drug effects MH - Serum Albumin, Bovine/chemistry MH - Surface Plasmon Resonance/methods MH - Surface Properties/drug effects OTO - NOTNLM OT - Protein-nanoparticles interaction OT - Surface charge OT - Surface plasmon resonance EDAT- 2018/11/13 06:00 MHDA- 2019/04/11 06:00 CRDT- 2018/11/13 06:00 PHST- 2018/06/19 00:00 [received] PHST- 2018/11/08 00:00 [revised] PHST- 2018/11/08 00:00 [accepted] PHST- 2018/11/13 06:00 [pubmed] PHST- 2019/04/11 06:00 [medline] PHST- 2018/11/13 06:00 [entrez] AID - S0141-8130(18)33030-7 [pii] AID - 10.1016/j.ijbiomac.2018.11.039 [doi] PST - ppublish SO - Int J Biol Macromol. 2019 Feb 15;123:97-107. doi: 10.1016/j.ijbiomac.2018.11.039. Epub 2018 Nov 9.