Abstract
Recently it was reported that the peripheral blood and thyroid gland of patients with Hashimoto's thyroiditis contain activated (Ia+ and/or MLR4+) T cells and high levels of 5 9+ ("helper") T lymphocytes. In normal individuals the 5 9 monoclonal antibody recognizes a T-cell fraction that includes all T lymphocytes with inducer activities. Here, circulating 5 9+ and 5 9- T lymphocytes were isolated from patients with Hashimoto's disease, and the proliferative response induced by human thyroglobulin was investigated. The results show that the total thyroglobulin-induced lymphocyte DNA synthesis is confined to the 5 9+ T-cell fraction. Further subfractionation of 5 9+ into MLR4+ and MLR4- cells clearly indicates that no substantial differences exist in their proliferative capacities. Whether 5 9, MLR4, and Ia antigens, all expressed on the thyroglobulin-responsive T-cell subset, are involved in thyroglobulin-induced cell proliferation, was also analyzed. Although both 5 9 and MLR4 monoclonal antibodies had no effect, complete inhibition of antigen-induced blastogenesis was observed upon addition of monoclonal antibodies ( D1 12 and BT2 9) directed to common determinants of Ia antigens. This inhibitory effect was also observed when T or non-T fractions were separately incubated with the monoclonal antibodies before culture. These results indicate that in humans, as in animals, the major histocompatibility complex may play a role in autoimmune thyroiditis. The data show that (a) the thyroglobulin-induced proliferative response is confined to a subset ( 5 9+) of T lymphocytes and (b) Ia antigens are involved in thyroglobulin-induced lymphocyte DNA synthesis in Hashimoto's disease.
| Original language | English |
|---|---|
| Pages (from-to) | 132-141 |
| Number of pages | 10 |
| Journal | Clinical Immunology and Immunopathology |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1984 |
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ASJC Scopus subject areas
- Immunology
- Immunology and Allergy
- Pathology and Forensic Medicine
Cite this
Thyroglobulin-induced T-cell in vitro proliferation in Hashimoto's thyroiditis : Identification of the responsive subset and effect of monoclonal antibodies directed to Ia antigens. / Canonica, G. W.; Cosulich, M. E.; Croci, R.; Ferrini, S.; Bagnasco, M.; Dirienzo, W.; Ferrini, O.; Bargellesi, A.; Giordano, G.
In: Clinical Immunology and Immunopathology, Vol. 32, No. 2, 1984, p. 132-141.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thyroglobulin-induced T-cell in vitro proliferation in Hashimoto's thyroiditis
T2 - Identification of the responsive subset and effect of monoclonal antibodies directed to Ia antigens
AU - Canonica, G. W.
AU - Cosulich, M. E.
AU - Croci, R.
AU - Ferrini, S.
AU - Bagnasco, M.
AU - Dirienzo, W.
AU - Ferrini, O.
AU - Bargellesi, A.
AU - Giordano, G.
PY - 1984
Y1 - 1984
N2 - Recently it was reported that the peripheral blood and thyroid gland of patients with Hashimoto's thyroiditis contain activated (Ia+ and/or MLR4+) T cells and high levels of 5 9+ ("helper") T lymphocytes. In normal individuals the 5 9 monoclonal antibody recognizes a T-cell fraction that includes all T lymphocytes with inducer activities. Here, circulating 5 9+ and 5 9- T lymphocytes were isolated from patients with Hashimoto's disease, and the proliferative response induced by human thyroglobulin was investigated. The results show that the total thyroglobulin-induced lymphocyte DNA synthesis is confined to the 5 9+ T-cell fraction. Further subfractionation of 5 9+ into MLR4+ and MLR4- cells clearly indicates that no substantial differences exist in their proliferative capacities. Whether 5 9, MLR4, and Ia antigens, all expressed on the thyroglobulin-responsive T-cell subset, are involved in thyroglobulin-induced cell proliferation, was also analyzed. Although both 5 9 and MLR4 monoclonal antibodies had no effect, complete inhibition of antigen-induced blastogenesis was observed upon addition of monoclonal antibodies ( D1 12 and BT2 9) directed to common determinants of Ia antigens. This inhibitory effect was also observed when T or non-T fractions were separately incubated with the monoclonal antibodies before culture. These results indicate that in humans, as in animals, the major histocompatibility complex may play a role in autoimmune thyroiditis. The data show that (a) the thyroglobulin-induced proliferative response is confined to a subset ( 5 9+) of T lymphocytes and (b) Ia antigens are involved in thyroglobulin-induced lymphocyte DNA synthesis in Hashimoto's disease.
AB - Recently it was reported that the peripheral blood and thyroid gland of patients with Hashimoto's thyroiditis contain activated (Ia+ and/or MLR4+) T cells and high levels of 5 9+ ("helper") T lymphocytes. In normal individuals the 5 9 monoclonal antibody recognizes a T-cell fraction that includes all T lymphocytes with inducer activities. Here, circulating 5 9+ and 5 9- T lymphocytes were isolated from patients with Hashimoto's disease, and the proliferative response induced by human thyroglobulin was investigated. The results show that the total thyroglobulin-induced lymphocyte DNA synthesis is confined to the 5 9+ T-cell fraction. Further subfractionation of 5 9+ into MLR4+ and MLR4- cells clearly indicates that no substantial differences exist in their proliferative capacities. Whether 5 9, MLR4, and Ia antigens, all expressed on the thyroglobulin-responsive T-cell subset, are involved in thyroglobulin-induced cell proliferation, was also analyzed. Although both 5 9 and MLR4 monoclonal antibodies had no effect, complete inhibition of antigen-induced blastogenesis was observed upon addition of monoclonal antibodies ( D1 12 and BT2 9) directed to common determinants of Ia antigens. This inhibitory effect was also observed when T or non-T fractions were separately incubated with the monoclonal antibodies before culture. These results indicate that in humans, as in animals, the major histocompatibility complex may play a role in autoimmune thyroiditis. The data show that (a) the thyroglobulin-induced proliferative response is confined to a subset ( 5 9+) of T lymphocytes and (b) Ia antigens are involved in thyroglobulin-induced lymphocyte DNA synthesis in Hashimoto's disease.
UR - http://www.scopus.com/inward/record.url?scp=0021243901&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0021243901&partnerID=8YFLogxK
U2 - 10.1016/0090-1229(84)90115-6
DO - 10.1016/0090-1229(84)90115-6
M3 - Article
C2 - 6610520
AN - SCOPUS:0021243901
VL - 32
SP - 132
EP - 141
JO - Clinical Immunology and Immunopathology
JF - Clinical Immunology and Immunopathology
SN - 0090-1229
IS - 2
ER -