Differentially expressed genes of Acanthamoeba castellanii during encystation

  • Moon, Eun-Kyung (Department of Parasitology, Kyungpook National University School of Medicine) ;
  • Chung, Dong-Il (Department of Parasitology, Kyungpook National University School of Medicine) ;
  • Hong, Yeon-Chul (Department of Parasitology, Kyungpook National University School of Medicine) ;
  • Kong, Hyun-Hee (Department of Parasitology, Kyungpook National University School of Medicine)
  • 발행 : 2007.12.31

초록

To examine the expressed gene profile during encystation of Acanthamoeba castellanii Castellani, we used differentially expressed gene (DGE) screening by RT-PCR with 20 sets of random primers. From this analysis, we found that approximately 16 genes showed up regulation during encystation. We chose 6 genes, which had relatively higher expression levels, for further investigation. Based on homology search in database, DEG2 showed 55% of similarity with xylose isomerase, DEG9 showed 37% of similarity with Na P-type ATPase, and DEG14 showed 77% of similarity with subtilisin-like serine proteinase. DEG3 and DEG26 were identified as hypothetical proteins and DEG25 exhibited no significant similarity to any known protein. Encystation of Acanthamoeba has been suggested to be a process to resist adverse environmental or nutritional conditions. Further characterization studies of these genes may provide us with more information on the encystation mechanism of Acanthamoeba.

키워드

참고문헌

  1. Baumann O, Murphy DB (1995) Microtubule-associated movement of mitochondria and small particles in Acanthamoeba castellanii. Cell Motil Cytoskel 32: 305-317 https://doi.org/10.1002/cm.970320407
  2. Bowers B, Korn ED (1969) The fine structure of Acanthamoeba castellanii (Neff strain). II. Encystment. J Cell Biol 41: 786-805 https://doi.org/10.1083/jcb.41.3.786
  3. Cordingley JS, Wills RA, Villemez CL (1996) Osmolarity is an independent trigger of Acanthamoeba castellanii differentiation. J Cell Biochem 61: 167-171 https://doi.org/10.1002/(SICI)1097-4644(19960501)61:2<167::AID-JCB1>3.0.CO;2-S
  4. Hong YC, Hwang MY, Yun HC, Yu HS, Kong HH, Yong TS, Chung DI (2002) Isolation and characterization of a cDNA encoding a mammalian cathepsin L-like cysteine proteinase from Acanthamoeba healyi. Korean J Parasitol 40: 17-24 https://doi.org/10.3347/kjp.2002.40.1.17
  5. Hong YC, Kong HH, Ock MS, Kim IS, Chung DI (2000) Isolation and characterization of a cDNA encoding a subtilisin-like serine proteinase (ahSUB) from Acanthamoeba healyi. Mol Biochem Parasitol 111: 441-446 https://doi.org/10.1016/S0166-6851(00)00326-1
  6. Kim WT, Kong HH, Ha YR, Hong YC, Jeong HJ, Yu HS, Chung DI (2006) Comparison of specific activity and cytopathic effects of purified 33 kDa serine proteinase from Acanthamoeba strains with different degree of virulence. Korean J Parasitol 44: 321-330 https://doi.org/10.3347/kjp.2006.44.4.321
  7. Kong HH, Kim TH, Chung DI (2000) Purification and characterization of a secretory serine proteinase of Acanthamoeba healyi isolated from GAE. J Parasitol 86: 12- 17 https://doi.org/10.1645/0022-3395(2000)086[0012:PACOAS]2.0.CO;2
  8. Marciano-Cabral F, Cabral G (2003) Acanthamoeba spp. as agents of disease in humans. Clin Microbiol Rev 16: 273- 307 https://doi.org/10.1128/CMR.16.2.273-307.2003
  9. McClellan K, Howard K, Mayhew E, Niederkorn J, Alizadeh H (2002) Adaptive immune responses to Acanthamoeba cysts. Exp Eye Res 75: 285-293 https://doi.org/10.1006/exer.2002.2015
  10. Mitro K, Bhagavathiammai A, Zhou OM, Bobbett G, McKerrow JH, Chokshi R, Chokshi B, James ER (1994) Partial characterization of the proteolytic secretions of Acanthamoeba polyphaga. Exp Parasitol 78: 377-385 https://doi.org/10.1006/expr.1994.1041
  11. Serrano-Luna Jde J, Cervantes-Sandoval I, Calderon J, Navarro-Garcia F, Tsutsumi V, Shibayama M (2006) Protease activities of Acanthamoeba polyphaga and Acanthamoeba castellanii. Can J Microbiol 52: 16-23 https://doi.org/10.1139/w05-114
  12. Wang X, Ahearn DG (1997) Effect of bacteria on survival and growth of Acanthamoeba castellanii. Curr Microbiol 34: 212-215 https://doi.org/10.1007/s002849900170
  13. Weisman RA (1976) Differentiation in Acanthamoeba castellanii. Annu Rev Microbiol 30: 189-219 https://doi.org/10.1146/annurev.mi.30.100176.001201