Objective To analyze the reasons for antigen diversity of Anaplasma phagocytophilum grown in different cells. Methods The P44 transcripts were analyzed using nested RT-PCR, and the P44 proteins were produced as recombinant protein in vitro by insect cell-free protein synthesis system. Results We detected and characterized P44 transcript variants of A. phagocytophilum from THP-1 and HL60 cells. And our study demonstrated the presence of specific antibodies against the 3 type of rP44 proteins that prevailed in infected THP-1 and HL60 cells, probably being suitable as protein antigens for sero-diagnosis of human granulocytic anaplasmosis. Conclusion We demonstrated antigenic diversity of a variety of A. phagocytophilum grown in different cells.
Gaowa, YIN Xu-hong, GUO Sheng-chun, Wulantuya, CAO Min-zhi
. Analysis of antigenic diversity of Anaplasma phagocytophilum grown in different cells[J]. Chinese Journal of Vector Biology and Control, 2017
, 28(3)
: 255
-257
.
DOI: 10.11853/j.issn.1003.8280.2017.03.015
[1] Chen SM,Dumler JS,Bakken JS,et al. Identification of a granulocytotropic Ehrlichia species as the etiologic agent of human disease[J]. J Clin Microbiol, 1994, 32(3):589-595.
[2] Zhang LJ,Liu Y,Ni DX,et al. Nosocomial transmission of human granulocytic anaplasmosis in China[J]. JAMA, 2008, 300(19):2263-2270.
[3] Lin MQ, Kikuchi T, Brewer HM, et al. Global proteomic analysis of two tick-borne emerging zoonotic agents:Anaplasma phagocytophilum and Ehrlichia chaffeensis[J]. Front Microbiol, 2011, 2:24.
[4] Dunning Hotopp JC,Lin MQ,Madupu R,et al. Comparative genomics of emerging human ehrlichiosis agents[J]. PLoS Genet, 2006, 2(2):e21.
[5] Lin Q, Rikihisa Y,Ohashi N,et al. Mechanisms of variable p44 expression by Anaplasma phagocytophilum[J]. Infect Immun, 2003, 71(10):5650-5661.
[6] Ohashi N, Gaowa, Wuritu, et al. Human granulocytic anaplasmosis, Japan[J]. Emerg Infect Dis, 2013, 19(2):289-292.
[7] Jiao XY,Fan ZC,Li YZ,et al. Clinical and laboratory features parameters of human granulocytic anaplasmosis(HGA) in patients admitted to hospital in Guangdong province, China[J]. Trop Doct, 2015, 45(4):209-213.
[8] Wang Y,Chen CF,Zhang LJ. Molecular characterization of Msp2/P44 of Anaplasma phagocytophilum isolated from infected patients and Haemaphysalis longicornis in Laizhou Bay, Shandong province, China[J]. PLoS One, 2013, 8(10):e78189.
[9] Hao Q, Geng Z, Hou XX, et al. Seroepidemiological investigation of lyme disease and human granulocytic anaplasmosis among people living in forest areas of eight provinces in China[J]. Biomed Environ Sci, 2013, 26(3):185-189.
[10] Rikihisa Y. Mechanisms of obligatory intracellular infection with Anaplasma phagocytophilum[J]. Clin Microbiol Rev, 2011, 24(3):469-489.