Specific binding of K- and I-region products of the H-2 complex to activated thymus-derived (T) cells belonging to different Ly subclasses

نویسندگان

  • Z Nagy
  • B E Elliott
  • M Nabholz
چکیده

Responder cells [C57BL/6J X A.TL)F1 lymph node cells depleted of bursa equivalent-derived (B) cells by filtration through nylon wool columns] were activated against incompatible K-region and I-region products together under conditions where these antigens are presented on separate stimulator cells. The resulting T blasts were stained with different concentrations of antisera directed against incompatible stimulator K-region or I-region products, or both. We obtained results that strongly suggest that in these cultures each activated responder blast stains with antiserum directed against either K-region or I-region products, but not both. Responder blasts from the same cultures were treated with antiserum and complement (C) directed against either Ly-1.2 or Ly-2.2 T-cell-specific surface antigens. Anti-Ly-1.2 serum and C specifically eliminates virtually all responder blasts staining with antiserum directed against stimulator I-region products; whereas anti-Ly-2.2 serum reduces to background levels the proportion of cells staining with antiserum against stimulator K-region products. The results obtained suggest that T cells binding stimulator K-region and I-region products, respectively, belong to two different subclasses distinguishable by their Ly phenotypes. Possible explanations for this association of T- cell subclass and specificity are discussed.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Spectroscopic Studies on the Interaction of Co(II) Tetrapyridinoporphyrazine with Synthetic Polynucleotides and DNA

Interactions of cationic tetrakis (N,N´,N´´,N´´´-tetramethyltetra-3,4-pyridinoporphyrazinatocobalt(II) (Co(tmtppa)) with synthetic polynucleotides, poly(A-T), poly(G-C) and calf thymus DNA have been characterized in 5 mM phosphate buffer, pH 7.2, by optical absorption and fluorescence spectroscopy. The appearance of hypochromicity effect and the red shift in UV-Vis spectrum of porphyrazine was ...

متن کامل

By Adam . Kruisbeek , Mary L . Davis , Louis a . Matis , and Dan

The T cell receptor repertoire for self major histocompatibility complex (MHC) ~ antigens and the Ir gene phenotype of responding T cells are not genetically determined but are acquired during ontogeny and are dictated by the MHC gene products of the host in which the T cells mature (1-3). The host element that determines the T cell self-recognition repertoire is the subject of much controversy...

متن کامل

Functional subclasses of T-lymphocytes bearing different Ly antigens. I. The generation of functionally distinct T-cell subclasses is a differentiative process independent of antigen

Ly alloantigens coded by two unlinked genetic loci (Ly-1 and Ly-2/Ly-3) are expressed on lymphoid cells undergoing thymus-dependent differentiation. Peripheral Thy-1+ cells from C57BL/6 mice can be divided into three subclasses on the basis of differential expression of Ly-1, Ly-2, and Ly-3; about 50% express all three Ly antigens (Ly -123+), about 33% only Ly-1 (Ly-1+), and about 6-8% Ly-2 and...

متن کامل

The role of H-2 and Ia antigens in graft-versus-host reactions (GVHR). Presence of host alloantigens on donor cells after GVHR and suppression of GVHR with an anti-Ia antiserum against hose Ia antigens

By using an indirect immunofluorescence technique, the presence of host cell derived H-2K, H-2D, and Ia alloantigens on donor cells recovered from recipient spleens after a graft-versus-host response (GVHR) was demonstrated. Mapping studies indicated that only host K, D, and I-A region gene products could be identified on the donor cells. Host I-E/C- and I-J-subregion products were not absorbed...

متن کامل

Analysis of the interactions between two molecules that are required for the expression of Ly-2 suppressor cell activity. Three different types of focusing events may be needed to deliver the suppressive signal

We described a T suppressor factor made by an I-J- Ly-2 T cell (Ly-2 TsF) that expresses biological activity only when its acceptor cell shares H-2-linked polymorphic genes with the cells that made the Ly-2 TsF (or when the producer cell had differentiated in a thymic environment where the gene products of the acceptor cell were expressed). The Ly-2 TsF requires the presence of I-J+ Ly-1 cells ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • The Journal of Experimental Medicine

دوره 144  شماره 

صفحات  -

تاریخ انتشار 1976