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Disintegrin modulates rat glomerular mesangial cell behavior

T J Tsai¹, J R Sheu, Y M Chen

¹Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, ROC.

|January 1, 1995

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Triflavin, a disintegrin, potently inhibits rat mesangial cell adhesion and proliferation by interfering with cell-matrix interactions. This molecule offers potential for modulating kidney cell behavior.

Area of Science:

Cell Biology
Biochemistry
Pharmacology

Background:

Disintegrins are peptides containing the Arg-Gly-Asp (RGD) sequence.
RGD sequence interferes with cell-matrix interactions.
Rat mesangial cells possess RGD-sensitive integrin receptors.

Purpose of the Study:

To investigate the effects of triflavin on rat mesangial cell adhesion and proliferation.
To compare the potency of triflavin with a synthetic RGD peptide (GRGDS).

Main Methods:

Assessing mesangial cell adhesion to fibronectin and collagen.
Evaluating the impact of triflavin and GRGDS on cell proliferation.
Utilizing both soluble and substratum-bound peptides.

Main Results:

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Triflavin significantly inhibited mesangial cell adhesion to fibronectin and collagen, showing higher potency than GRGDS.
Triflavin suppressed serum-stimulated and platelet-derived growth factor-induced mesangial cell proliferation.
Both soluble and substratum-bound triflavin and GRGDS inhibited cell growth, partly due to antiadhesive effects.

Conclusions:

Triflavin is a potent modulator of rat mesangial cell adhesion.
Triflavin effectively inhibits rat mesangial cell proliferation.
Triflavin's effects are linked to its antiadhesive properties via RGD sequence interaction.