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Production and characterization of monoclonal antibody to dermatan sulfate proteoglycan

M Sobue, N Nakashima, T Fukatsu, T Nagasaka, T Katoh, T Ogura and J Takeuchi

Department of Laboratory Medicine, Nagoya University School of Medicine, Japan.

We purified dermatan sulfate proteoglycan (PG) from the capsule of human ovarian fibroma for use as an immunogen. A monoclonal antibody, designated 6B6, was produced which reacts to the intact molecule of dermatan sulfate PG and the chondroitinase AC-treated core molecule on Western-blotted nitrocellulose membrane. Localization of materials showing crossreactivity to this antibody was studied in human tissues by indirect immunohistochemistry. The interstitial elements of almost all tissues examined were positive for the antibody: dermis, submucosal layer of digestive tract, perichondral layer, perivascular connective tissue, perineurium, adventitia of aorta, vessel wall of vein, pleura, and fibrous capsule of kidney and liver. Positive staining was also observed in fibrous elements at post-necrotic foci of cardiac muscle and pancreas, and at atherosclerotic lesions of aorta. The distribution of the antigen, core protein of the dermatan sulfate PG, revealed with 6B6 was compared to that of the dermatan sulfate side chain, which was demonstrated with antibody 9A-2 (Couchman et al.: Nature 307:650, 1984) after treatment with chondroitin sulfate B-lyase. The distribution of both antigens, core protein, and dermatan sulfate side chains showed the same pattern, with minor exceptions. The antibody 6B6 will be a useful tool to study the immunohistochemical localization of dermatan sulfate PG.

Volume 36, Issue 5, pp. 479-485, 05/01/1988
Copyright © 1988 by The Histochemical Society


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