Abstract
This study examined the cytotoxicity of halloysite nanotubes (HNTs) by investigating physiological responses of Escherichia coli, from cell growth to protein expression. Surfaces of HNTs were modified by amine functionalization (NH2-HNTs) or bovine serum albumin (BSA) coating and their cytotoxicity levels were compared with that of non-modified HNTs (Bare-HNTs). Bare- and NH2-HNTs exhibited accelerated cell death rates at ≥0.5 mg/ml of HNTs. It was also found that concentration as low as 0.01 mg/ml of HNTs exerted significant toxic effects on the bacterial cells. Cellular viability, metabolic activity, and DNA replication all decreased with increasing concentrations of Bare- and NH2-HNTs. In contrast, 0.01 mg/ml of BSA-coated HNTs (BSA-HNTs) coated showed no evidence of cytotoxicity. Even at concentrations ≤0.1 mg/ml, the cytocompatibility of BSA-HNTs was significantly better than those of Bare- and NH2-HNTs, which was confirmed by the observation of (i) the same or similar levels of cell proliferation and cell viability to the control, and (ii) higher levels of metabolic activity and plasmid DNA replication than those of Bare- and NH2-HNTs. In addition, higher ranaspumin-2 protein yield was observed from bacterial culture supplemented with BSA-HNTs (100, 83, and 80 % of yield at 0.01, 0.05, and 0.1 mg/ml, respectively, relative to the control). This work showed that the increase of bacterial cytotoxicity of HNTs correlated well with elevating HNT concentration and that surface modification of HNTs with amine functional group and BSA coating was an effective strategy to reduce cytotoxicity up to 0.1 mg/ml of HNTs.
References
An H, Jin B (2012) Prospects of nanoparticle-DNA binding and its implications in medical biotechnology. Biotechnol Adv 30(6):1721–1732
Arshady R (1990) Albumin microspheres and microcapsules: methodology of manufacturing techniques. J Controlled Release 14(2):111–131
Barrientos-Ramírez S, Oca-Ramírez G, Ramos-Fernández E, Sepúlveda-Escribano A, Pastor-Blas M, González-Montiel A (2011) Surface modification of natural halloysite clay nanotubes with aminosilanes. Application as catalyst supports in the atom transfer radical polymerization of methyl methacrylate. Appl Catal A 406(1):22–33
Bates TF, Hildebrand FA, Swineford A (1950) Morphology and structure of endellite and halloysite. Am Mineral 35(7–8):463–484
Belkin S, Smulski DR, Vollmer AC, Van Dyk TK, LaRossa RA (1996) Oxidative stress detection with Escherichia coli harboring a katG’: lux fusion. Appl Environ Microbiol 62(7):2252–2256
Choi HJ, Ebersbacher CF, Myung NV, Montemagno CD (2012) Synthesis of nanoparticles with frog foam nest proteins. J Nanopart Res 14(9):1–13
Deen I, Pang X, Zhitomirsky I (2012) Electrophoretic deposition of composite chitosan-halloysite nanotube-hydroxyapatite films. Colloids Surf A 410(20):38–44
Du M, Guo B, Liu M, Jia D (2006) Preparation and characterization of polypropylene grafted halloysite and their compatibility effect to polypropylene/halloysite composite. Polym J 38(11):1198–1204
Du ML, Guo BC, Jia DM (2010) Newly emerging applications of halloysite nanotubes: a review. Polym Int 59(5):574–582
Duan JM, Liu RC, Chen T, Zhang B, Liu JD (2012) Halloysite nanotube-Fe3O4 composite for removal of methyl violet from aqueous solutions. Desalination 293:46–52
Fubini B, Hubbard A (2003) Reactive oxygen species (ROS) and reactive nitrogen species (RNS) generation by silica in inflammation and fibrosis. Free Radic Biol Med 34(12):1507–1516
Guo B, Zou Q, Lei Y, Jia D (2009) Structure and performance of polyamide 6/halloysite nanotubes nanocomposites. Polym J 41(10):835–842
Gupta PK, Hung C, Perrier D (1986) Albumin microspheres. I: release characteristics of adriamycin. Int J Pharm 33(1):137–146
Jacobsen NR, Pojana G, White P, Møller P, Cohn CA, Smith Korsholm K, Vogel U, Marcomini A, Loft S, Wallin H (2008) Genotoxicity, cytotoxicity, and reactive oxygen species induced by single-walled carbon nanotubes and C60 fullerenes in the FE1-Muta™ mouse lung epithelial cells. Environ Mol Mutagen 49(6):476–487
Jinhua W, Xiang Z, Bing Z, Yafei Z, Rui Z, Jindun L, Rongfeng C (2010) Rapid adsorption of Cr(VI) on modified halloysite nanotubes. Desalination 259(1):22–28
Joussein E, Petit S, Churchman J, Theng B, Righi D, Delvaux B (2005) Halloysite clay minerals: a review. Clay Miner 40(4):383–426
Kang S, Pinault M, Pfefferle LD, Elimelech M (2007) Single-walled carbon nanotubes exhibit strong antimicrobial activity. Langmuir 23(17):8670–8673
Kang S, Herzberg M, Rodrigues DF, Elimelech M (2008) Antibacterial effects of carbon nanotubes: size does matter. Langmuir 24(13):6409–6413
Kiani G, Dostali M, Rostami A, Khataee AR (2011) Adsorption studies on the removal of malachite green from aqueous solutions onto halloysite nanotubes. Appl Clay Sci 54(1):34–39
Kim CK, Chung MH, Oh YK, Lah WL (1993) Hydrophilic albumin microspheres as cytarabine carriers. Arch Pharm Res 16(2):123–128
Krug HF, Wick P (2011) Nanotoxicology: an interdisciplinary challenge. Angew Chem Int Ed 50(6):1260–1278
Levis S, Deasy P (2003) Use of coated microtubular halloysite for the sustained release of diltiazem hydrochloride and propranolol hydrochloride. Int J Pharm 253(1):145–157
Li Y, Sun L, Jin M, Du Z, Liu X, Guo C, Huang P, Sun Z (2011) Size-dependent cytotoxicity of amorphous silica nanoparticles in human hepatoma HepG2 cells. Toxicol In Vitro 25(7):1343–1352
Liu H, Wang C, Zou S, Wei Z, Tong Z (2012a) Facile fabrication of polystyrene/halloysite nanotube microspheres with core–shell structure via pickering suspension polymerization. Polym Bull 69:765–777
Liu L, Wan YZ, Xie YD, Zhai R, Zhang B, Liu JD (2012b) The removal of dye from aqueous solution using alginate-halloysite nanotube beads. Chem Eng J 187:210–216
Liu RC, Fu KM, Zhang B, Mei DD, Zhang HQ, Liu JD (2012c) Removal of methyl orange by modified halloysite nanotubes. J Dispers Sci Technol 33(5):711–718
Lordan S, Kennedy JE, Higginbotham CL (2011) Cytotoxic effects induced by unmodified and organically modified nanoclays in the human hepatic HepG2 cell line. J Appl Toxicol 31(1):27–35
Luo P, Zhao Y, Zhang B, Liu J, Yang Y (2010) Study on the adsorption of neutral red from aqueous solution onto halloysite nanotubes. Water Res 44(5):1489–1497
Lvov YM, Shchukin DG, Mohwald H, Price RR (2008) Halloysite clay nanotubes for controlled release of protective agents. ACS Nano 2(5):814–820
Marney D, Russell L, Wu D, Nguyen T, Cramm D, Rigopoulos N, Wright N, Greaves M (2008) The suitability of halloysite nanotubes as a fire retardant for nylon 6. Polym Degrad Stab 93(10):1971–1978
McClellan SJ, Franses EI (2005) Adsorption of bovine serum albumin at solid/aqueous interfaces. Colloids Surf A 260(1–3):265–275
Nan A, Bai X, Son SJ, Lee SB, Ghandehari H (2008) Cellular uptake and cytotoxicity of silica nanotubes. Nano Lett 8(8):2150–2154
Pan J, Yao H, Xu L, Ou H, Huo P, Li XX, Yan Y (2011) Selective recognition of 2,4,6-trichlorophenol by molecularly imprinted polymers based on magnetic halloysite nanotubes composites. J Phys Chem C 115(13):5440–5449
Park MV, Neigh AM, Vermeulen JP, de la Fonteyne LJ, Verharen HW, Briede JJ, van Loveren H, de Jong WH (2011) The effect of particle size on the cytotoxicity, inflammation, developmental toxicity and genotoxicity of silver nanoparticles. Biomaterials 32(36):9810–9817
Parks GA (1965) The isoelectric points of solid oxides, solid hydroxides, and aqueous hydroxo complex systems. Chem Rev 65(2):177–198
Qi R, Guo R, Shen M, Cao X, Zhang L, Xu J, Yu J, Shi X (2010) Electrospun poly (lactic-co-glycolic acid)/halloysite nanotube composite nanofibers for drug encapsulation and sustained release. J Mater Chem 20(47):10622–10629
Rooj S, Das A, Thakur V, Mahaling R, Bhowmick AK, Heinrich G (2010) Preparation and properties of natural nanocomposites based on natural rubber and naturally occurring halloysite nanotubes. Mater Des 31(4):2151–2156
Shchukin DG, Möhwald H (2007) Surface-engineered nanocontainers for entrapment of corrosion inhibitors. Adv Funct Mater 17(9):1451–1458
Shi YF, Tian Z, Zhang Y, Shen HB, Jia NQ (2011) Functionalized halloysite nanotube-based carrier for intracellular delivery of antisense oligonucleotides. Nanoscale Res Lett 6(1):608
Singh B (1996) Why does halloysite roll? A new model. Clays Clay Miner 44(2):191–196
Tierrablanca E, Romero-García J, Roman P, Cruz-Silva R (2010) Biomimetic polymerization of aniline using hematin supported on halloysite nanotubes. Appl Catal A 381(1):267–273
Vergaro V, Abdullayev E, Lvov YM, Zeitoun A, Cingolani R, Rinaldi R, Leporatti S (2010) Cytocompatibility and uptake of halloysite clay nanotubes. Biomacromolecules 11(3):820–826
Vergaro V, Lvov YM, Leporatti S (2012) Halloysite clay nanotubes for resveratrol delivery to cancer cells. Macromol Biosci 12(9):1265–1271
Wei W, Abdullayev E, Hollister A, Mills D, Lvov YM (2012) Clay nanotube/poly (methyl methacrylate) bone cement composites with sustained antibiotic release. Macromol Mater 297(7):645–653
Xie Y, Qian D, Wu D, Ma X (2011) Magnetic halloysite nanotubes/iron oxide composites for the adsorption of dyes. Chem Eng J 168(2):959–963
Ye Y, Chen H, Wu J, Ye L (2007) High impact strength epoxy nanocomposites with natural nanotubes. Polymer 48(21):6426–6433
Zhao M, Liu P (2008) Adsorption behavior of methylene blue on halloysite nanotubes. Microporous Mesoporous Mater 112(1):419–424
Acknowledgments
The authors thank Charles Ebersbacher for helpful discussions.
Conflict of interest
The authors declare no conflict of interest.
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Choi, HJ., Stazak, T.J. & Montemagno, C.D. Surface-dependent cytotoxicity on bacteria as a model for environmental stress of halloysite nanotubes. J Nanopart Res 15, 2008 (2013). https://doi.org/10.1007/s11051-013-2008-4
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11051-013-2008-4