Interaction of the salivary low-molecular-weight mucin (MG2) with Actinobacillus actinomycetemcomitans

Interaction of the salivary low-molecular-weight mucin (MG2) with Actinobacillus actinomycetemcomitans
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唾液低分子量粘蛋白 (MG2) 与放线放线杆菌的相互作用

DOI:
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发表时间:
1996
期刊:
Antonie van Leeuwenhoek
影响因子:
--
通讯作者:
A. V. Amerongen
A. V. Amerongen
中科院分区:
--
文献类型:
--
作者:
J. Groenink;A. Ligtenberg;E. Veerman;J. Bolscher;A. V. Amerongen

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牙周炎与口腔中某些革兰氏阴性细菌的存在有关,其中包括伴生放线菌。为了确定哪些类型的唾液成分与伴生放线菌相互作用,将两株放线菌(HG 1175和FDC Y4)与全唾液和单个腺体分泌物培养。腮腺、下颌下和舌下唾液。通过细菌结合唾液蛋白的免疫印迹免疫化学分析表明,IgA、低分子粘蛋白MG2、腮腺凝集素以及一个300 kDa的舌下和下颌下糖蛋白与所测试的细菌株结合。此外,还研究了伴生放线菌对唾液蛋白的固相粘附性。唾液蛋白经电泳法和转移到硝酸纤维素膜后,伴生放线菌只附着在镁上。在本实验中,唾液糖蛋白经高碘酸盐处理、温和的酸水解或神经氨酸酶消化后,与两株临床分离株(HG 1175和NY 664)的结合被取消,提示MG2上的唾液酸残基参与了结合。相比之下,光滑的实验室菌株Y4的粘附性不受唾液酸残基的去除甚至镁2的高周期处理的影响。
Periodontitis is associated with the presence of certain Gram-negative bacteria in the oral cavity, among these Actinobacillus actinomycetemcomitans. In order to determine which types of salivary components interact with A. actinomycetemcomitans two strains (HG 1175 and FDC Y4) were incubated with whole saliva and individual glandular secretions, viz. parotid, submandibular, and sublingual saliva. Immunochemical analysis by immunoblotting of bacteria-bound salivary proteins showed that IgA, the low-molecular mucin MG2, parotid agglutinin, and a 300 kDa sublingual and submandibular glycoprotein, were bound to the bacterial strains tested. In addition, adherence of A. actinomycetemcomitans to salivary proteins in a solid-phase was studied. After electrophoresis and transfer of salivary proteins to nitrocellulose membranes A. actinomycetemcomitans adhered only to MG2. In this assay periodate treatment, mild acid hydrolysis or neuraminidase digestion of the saliva glycoproteins abolished binding of two clinical isolates (HG 1175 and NY 664), suggesting that sialic acid residues on MG2 are involved in the binding. In contrast, adherence of the smooth laboratory strain Y4 was not affected by removal of sialic acid residues or even periodate treatment of MG2.
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DOI: --
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发表时间: 1992
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影响因子: --
作者:
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