Abstract
The potential role of integrins in the epidermotropism of the atypical lymphocytes of Sezary syndrome was studied by monitoring the expression of α and β chains and their major ligands in skin biopsies and peripheral blood cells in patients at different progression stages. Most mononuclear cell integrins were also detected on infiltrating cells including the leukocyte complex CD11/CD18, α4β1, and their ligands, ICAM-1 and VCAM-1. Conversely, α6 and β4 were present only in epidermal basal cells. Mononuclear infiltrates of SS were positive for both α3 and α5 chains, whereas in inflammatory cutaneous diseases only α5 was expressed, indicating that a major feature of Sezary cells is the unique expression of α3β1. Significant changes of α3β1 were monitored in the follow-up of Sezary patients and correlated with the results of the therapy. The heterodimer α1β1 was absent from mononuclear cells except in one case. Among matrix molecules, laminin and type IV collagen displayed a pattern similar to that of the controls, whereas fibronectin and tenascin deposition were apparently increased. Circulating Sezary cells, both at diagnosis and during follow-up, were α3 and α5 negative and failed to acquire these adhesion molecules after mitogenic stimulation. We propose that the expression of α3β1 is a distinguishing feature of skin-infiltrating Sezary cells and may be related to their epidermotropism. It could also be adopted as an additional parameter of the progression and therapeutic stage of Sezary syndrome.
| Original language | English |
|---|---|
| Pages (from-to) | 151-159 |
| Number of pages | 9 |
| Journal | Journal of Investigative Dermatology |
| Volume | 99 |
| Issue number | 2 |
| Publication status | Published - 1992 |
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ASJC Scopus subject areas
- Dermatology
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Expression and role of integrin receptors in Sezary syndrome. / Savoia, P.; Novelli, M.; Fierro, M. T.; Cremona, O.; Marchisio, P. C.; Bernengo, M. G.
In: Journal of Investigative Dermatology, Vol. 99, No. 2, 1992, p. 151-159.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Expression and role of integrin receptors in Sezary syndrome
AU - Savoia, P.
AU - Novelli, M.
AU - Fierro, M. T.
AU - Cremona, O.
AU - Marchisio, P. C.
AU - Bernengo, M. G.
PY - 1992
Y1 - 1992
N2 - The potential role of integrins in the epidermotropism of the atypical lymphocytes of Sezary syndrome was studied by monitoring the expression of α and β chains and their major ligands in skin biopsies and peripheral blood cells in patients at different progression stages. Most mononuclear cell integrins were also detected on infiltrating cells including the leukocyte complex CD11/CD18, α4β1, and their ligands, ICAM-1 and VCAM-1. Conversely, α6 and β4 were present only in epidermal basal cells. Mononuclear infiltrates of SS were positive for both α3 and α5 chains, whereas in inflammatory cutaneous diseases only α5 was expressed, indicating that a major feature of Sezary cells is the unique expression of α3β1. Significant changes of α3β1 were monitored in the follow-up of Sezary patients and correlated with the results of the therapy. The heterodimer α1β1 was absent from mononuclear cells except in one case. Among matrix molecules, laminin and type IV collagen displayed a pattern similar to that of the controls, whereas fibronectin and tenascin deposition were apparently increased. Circulating Sezary cells, both at diagnosis and during follow-up, were α3 and α5 negative and failed to acquire these adhesion molecules after mitogenic stimulation. We propose that the expression of α3β1 is a distinguishing feature of skin-infiltrating Sezary cells and may be related to their epidermotropism. It could also be adopted as an additional parameter of the progression and therapeutic stage of Sezary syndrome.
AB - The potential role of integrins in the epidermotropism of the atypical lymphocytes of Sezary syndrome was studied by monitoring the expression of α and β chains and their major ligands in skin biopsies and peripheral blood cells in patients at different progression stages. Most mononuclear cell integrins were also detected on infiltrating cells including the leukocyte complex CD11/CD18, α4β1, and their ligands, ICAM-1 and VCAM-1. Conversely, α6 and β4 were present only in epidermal basal cells. Mononuclear infiltrates of SS were positive for both α3 and α5 chains, whereas in inflammatory cutaneous diseases only α5 was expressed, indicating that a major feature of Sezary cells is the unique expression of α3β1. Significant changes of α3β1 were monitored in the follow-up of Sezary patients and correlated with the results of the therapy. The heterodimer α1β1 was absent from mononuclear cells except in one case. Among matrix molecules, laminin and type IV collagen displayed a pattern similar to that of the controls, whereas fibronectin and tenascin deposition were apparently increased. Circulating Sezary cells, both at diagnosis and during follow-up, were α3 and α5 negative and failed to acquire these adhesion molecules after mitogenic stimulation. We propose that the expression of α3β1 is a distinguishing feature of skin-infiltrating Sezary cells and may be related to their epidermotropism. It could also be adopted as an additional parameter of the progression and therapeutic stage of Sezary syndrome.
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M3 - Article
C2 - 1352794
AN - SCOPUS:0026625002
VL - 99
SP - 151
EP - 159
JO - Journal of Investigative Dermatology
JF - Journal of Investigative Dermatology
SN - 0022-202X
IS - 2
ER -