Two novel monoclonal antibodies to fibronectin that recognize the Hep II and CS-1 regions respectively: their differential effect on lymphocyte adhesion.

Abstract:

:We have obtained two new mAbs to the carboxy-terminal region of fibronectin, namely P3D4 and P1F11, and have studied their binding sites and their ability to block lymphocyte adhesion to fibronectin. ELISA and Western blot analyses showed that P3D4 reacts with both fibronectin chains and both Hep II-containing fragments (58 kDa and 38 kDa). P1F11, raised against the synthetic peptide CS-1, reacted with the 38 kDa fragment and with a 190 kDa fragment derived from the A chain of fibronectin. P1F11 did not react with the 58 kDa fragment thus clearly establishing that 58 kDa comes from the B chain of fibronectin and lacks the CS-1 sequence. mAbs P3D4 and P1F11 were used to evaluate the contribution of the Hep II and CS-1 sites in cell attachment to fibronectin. P3D4 effectively inhibited B cell adhesion to 38 kDa, 58 kDa and fibronectin; P1F11 however produced only limited inhibition, suggesting that lymphocyte interaction with Hep II may modulate further binding to the CS-1 site.

authors

Garcia-Pardo A,Sánchez-Aparicio P,Wayner EA

doi

10.1016/s0006-291x(05)80785-5

subject

Has Abstract

pub_date

1992-07-15 00:00:00

pages

135-42

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)80785-5

journal_volume

186

pub_type

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