Autor: Rybak, Marcin. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Monocytes in children with leukemias and lymphomas - down-regulation of HLA and costimulatory molecules.
Autorzy:: Łuczyński, Włodzimierz
Stasiak-Barmuta, Anna
Krawczuk-Rybak, Maryna
Szymański, Marcin
Malinowska, Iwona
Mitura-Lesiuk, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/1041525.pdf
Data publikacji:: 2004
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: infection
lymphoma
costimulation
leukemia
monocytes
Opis:: The aim of the study was to evaluate the function of monocytes in children with leukemias and lymphomas based on the expression of critical costimulatory, activatory and adhesion molecules (CD80, CD86, HLA-DR and CD54 = ICAM-1), estimated with tricolor flow cytometry. In comparison to the control group we found a lower percentage of monocytes with costimulatory molecules (CD80 before and CD86 after lipopolysaccharide stimulation) at the time of diagnosis and of monocytes with HLA-DR molecules after remission induction. We also noted a lower percentage of monocytes with HLA-DR expression in the group with severe or therapy resistant infections. The results of our investigation suggest some defect in costimulation and antigen presentation in lymphoproliferative diseases in children.
Źródło:: Acta Biochimica Polonica; 2004, 51, 4; 1067-1073
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Tytuł:: CD40 stimulation induces differentiation of acute lymphoblastic leukemia cells into dendritic cells
Autorzy:: Łuczyński, Włodzimierz
Stasiak-Barmuta, Anna
Iłendo, Elżbieta
Krawczuk-Rybak, Maryna
Malinowska, Iwona
Mitura-Lesiuk, Małgorzata
Parfieńczyk, Adam
Szymański, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/1041252.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: immunotherapy
T-lymphocytes
CD40L
acute lymphoblastic leukemia
dendritic cells
Opis:: Despite the very high percentage of long-term remissions in acute lymphoblastic leukemia (ALL) in children, some of them suffer from recurrence of the disease. New treatment modalities, e.g. effective geno- and immunotherapy are needed. The use of neoplasmatic cells to present tumor antigens is one of the approaches in cancer vaccines. ALL cells lack the expression of costimulatory molecules and are poor antigen presenting cells (APCs) for T-cell activation. CD40/40L interaction stimulates B-cells to proliferate, differentiate, upregulate costimulatory molecules and increase antigen presentation. The aim of the study was to test the hypothesis that ALL cells can be turned into professional APCs by CD40L activation. Children with B-cell precursor ALL were enrolled into the study. Mononuclear cells from bone marrow or peripheral blood were stimulated with CD40L and interleukin 4. Results: 1) after culture we noted upregulation of all assessed costimulatory, adhesion and activatory molecules i.e. CD1a, CD11c, CD40, CD54, CD80, CD83, CD86, CD123, HLA class I and II; 2) CD40L activated ALL cells induced proliferation of allogeneic T-cells (measured by [3H]thymidine incorporation). These results confirm the possibility of enhancing the immunogenicity of ALL cells with the CD40L system and indicate that this approach can be used in immunotherapeutic trials.
Źródło:: Acta Biochimica Polonica; 2006, 53, 2; 377-382
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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