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The first morphologic and functional characterization of hemocytes in Hong Kong oyster, Crassostrea hongkongensis
Li, Jun1; Zhang, Yuehuan1; Mao, Fan1; Lin, Yue1; Xiao, Shu1; Xiang, Zhiming1; Ma, Haitao1; Zhang, Yang1; Yu, Ziniu1
2018
Source PublicationFISH & SHELLFISH IMMUNOLOGY
ISSN1050-4648
Volume81Pages:423
AbstractHemocytes are the first line of defence of the innate immune system of molluscs. For the first time hemocytes of Crassostrea hongkongensis were morphologically and functionally characterized, identifying circulating cell types and studying their involvement in immune responses. In the present study, two main populations, hyalinocytes and granulocytes, were characterized based on the presence or absence of cytoplasmic granules, using light and electron microscopy (TEM), and flow cytometry analyses. Granulocytes are 7-13 mu m in diameter and present evident cytoplasmic granules, and hyalinocytes, 6-15 mu m in diameter, with a few or no granules. The mean number of circulating hemocytes in the hemolymph was 2.52 x 10(6) cells/mL. Flow cytometry indicated that both granulocytes and hyalinocytes showed cell phagocytosis and reactive oxygen species (ROS) production. However, phagocytosis and spontaneous production of reactive oxygen species (ROS) in granulocytes are much more active compared with hyalinocytes, which demonstrated that the granulocytes are the main hemocytes involved in the immune response of Hong Kong oyster. Moreover, the cell-free hemolymph showed antibacterial activity against Vibrio alginolyticus. Our results provide the basic information of hemocytes population of Hong Kong oyster for further investigations associated with innate immunity.
DepartmentLMB
KeywordCrassostrea hongkongensis Hemocytes ROS Phagocytosis Antibacterial activity
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17632
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, CAS Key Lab Trop Marine Bioresources & Ecol, Guangdong Prov Key Lab Appl Marine Biol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
2.South China Sea Bioresource Exploitat & Utilizat, Guangzhou, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun,Zhang, Yuehuan,Mao, Fan,et al. The first morphologic and functional characterization of hemocytes in Hong Kong oyster, Crassostrea hongkongensis[J]. FISH & SHELLFISH IMMUNOLOGY,2018,81:423, 429.
APA Li, Jun.,Zhang, Yuehuan.,Mao, Fan.,Lin, Yue.,Xiao, Shu.,...&Yu, Ziniu.(2018).The first morphologic and functional characterization of hemocytes in Hong Kong oyster, Crassostrea hongkongensis.FISH & SHELLFISH IMMUNOLOGY,81,423.
MLA Li, Jun,et al."The first morphologic and functional characterization of hemocytes in Hong Kong oyster, Crassostrea hongkongensis".FISH & SHELLFISH IMMUNOLOGY 81(2018):423.
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