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Vol. 11, No. 3 (2019) Trang: 42-48
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Article info.

 

ABSTRACT

Received 05 Sep 2019
Revised 03 Nov 2019

Accepted 29 Nov 2019

 

Mouse bone marrow-derived macrophages (BMDM) have been identified as an important host cell model for studying mammalian macrophage functions during pathogen infection. Whereas colony stimulating factor (CSF)-1 is required for BMDM differentiation, the commercial CSF-1 is expensive. Therefore, L929 cell-conditioned medium (LCM) has been reported to be used as a source of CSF-1 in many recent studies. However, whether BMDM differentiated by commercial CSF-1 and LCM had any functional differences in bacterial infection, particularly in Listeria monocytogenes (LM) infection, has remained a question. This study was aimed to examine the morphology of macrophages differentiated from CSF-1 and LCM as well as the phagocytic function of these macrophages in LM infection. Mouse bone marrow cells were differentiated in CSF-1 or LCM through six days before being infected by LM. Phagocytotic roles of BMDM were evaluated through the capability of macrophages to take up the bacteria, as shown by infection assay and immunofluorescence microscope. The results showed that macrophages grown in CSF-1 and LCM were similar in morphology and phagocytic functions during LM infection. Macrophages from LCM-supplemented media were homogenous and obtained CD11b and F4/80 surface markers. Immunofluorescence images demonstrated that bone marrow-derived macrophages were able to successfully take up LM at 0.5 hour but unable to control intracellular bacterial replication by 4 hours after infection.

Keywords

Bone marrow, bone marrow-derived macrophage, differentiation, infection, Listeria monocytogenes

Cited as: Thao, T.T., 2019. Characterization of mouse bone marrow-derived macrophages differentiated in L929 cell conditioned medium and colony stimulating factor-1 in Listeria monocytogenes in-fection. Can Tho University Journal of Science. 11(3): 42-48.

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