Distribution and Maturation of Skin Dendritic Cell Subsets in Two Forms of Cutaneous T-Cell Lymphoma: Mycosis Fungoides and Sézary Syndrome

Schwingshackl, Philipp; Obermoser, Gerlinde; Nguyen, Van Anh; Fritsch, Peter; Sepp, Norbert; Romani, Nikolaus

doi:10.2340/00015555-1220

Cited by 36 publications

(31 citation statements)

References 36 publications

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“…The other type showed a much more dendritic shape. 22 In our case, the unidentified cells did not display the features of two opposite aspects of plasmacytoid DCs. In addition, frozen immunohistochemistry, flow cytometry or immunoflurescence techniques are not possible because no cryomaterial was available (as our case presented by solitary small nodule) to perform wide panel of markers.…”

Section: Discussioncontrasting

confidence: 44%

Indeterminate cell histiocytosis with naïve cells

Bakry¹,

Samaka

Kandil

et al. 2013

Rare Tumors

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Histiocytoses are a heterogeneous group of disorders characterized by proliferation and accumulation of cells of mononuclear-macrophage system and dendritic cells. Histiocytoses are categorized according to the cell of origin into Langerhans cell histiocytosis (LCH), Non Langerhans cell histiocytoses and indeterminate cell histiocytosis (ICH). ICH is an extraordinary rare neoplastic dendritic cell disorder that has poorly understood histogenesis and pathogenesis. It is characterized by a proliferation of dendritic cells, which mimic Langerhans cells immunophenotypically (positive for CD1a and S-100 protein), but lack Birbeck granules characteristic of Langerhans cells. Twenty-four year-old Egyptian male was presented with reddish brown chest wall nodule. Clinical, histopathological, immunohistochemical and ultrastructure features are typical for ICH. He was in a good state without any evidence of recurrence or metastasis after 24 months follow up. Peculiar histopathological features were detected in the present case. Many unidentified cells with Hematoxylin & Eosin Langerhans like features showed negative staining for S-100, CD1a, Langerin and CD68. In absence of cellular atypia and mitosis, the infiltrating cells showed epidermotropism that was reported once in ICH as well as neural and perineural invasion that were not previously reported. Therefore we prefer using a tentatively designated diagnosis; dendritic cell tumor, not otherwise specified or newly proposed diagnosis (Indeterminate cell histocytosis with naïve cells) for the present case.

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Section: Discussioncontrasting

confidence: 44%

Indeterminate cell histiocytosis with naïve cells

Bakry¹,

Samaka

Kandil

et al. 2013

Rare Tumors

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“…DC-SIGN is expressed at sites in the skin (dermis) where T. rubrum is known to enter the host. Therefore, DC-SIGN-positive DCs might, trough these C-type lectin receptors, form the first encounter with these pathogens and the host immune system and, after antigen presentation, initiate a cellular response [21] [22] [23]. The results also shown that others receptors could participate in the bind of T.rubrum with macrophages or dendritic cells.…”

Section: Discussionmentioning

confidence: 82%

Monocyte-Derived Dendritic Cells from Patients with Dermatophytosis Restrict the Growth of Trichophyton rubrum and Induce CD4-T Cell Activation

et al. 2014

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Dermatophytes are the most common agents of superficial mycoses that are caused by mold fungi. Trichophyton rubrum is the most common pathogen causing dermatophytosis. The immunology of dermatophytosis is currently poorly understood. Recently, our group investigated the interaction of T. rubrum conidia with peritoneal mouse macrophages. We found that macrophages phagocytose T. rubrum conidia resulted in a down-modulation of class II major histocompatibility complex (MHC) antigens and in the expression of co-stimulatory molecules. Furthermore, it induced the production of IL-10, and T. rubrum conidia differentiated into hyphae that grew and killed the macrophages after 8 hrs of culture. This work demonstrated that dendritic cells (DCs) and macrophages, from patients or normal individuals, avidly interact with pathogenic fungus T. rubrum. The dermatophyte has two major receptors on human monocyte-derived DC: DC-SIGN and mannose receptor. In contrast macrophage has only mannose receptor that participates in the phagocytosis or bound process. Another striking aspect of this study is that unlike macrophages that permit rapid growth of T. rubrum, human DC inhibited the growth and induces Th activation. The ability of DC from patients to interact and kill T. rubrum and to present Ags to T cells suggests that DC may play an important role in the host response to T. rubrum infection by coordinating the development of cellular immune response.

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“…2). The number of mDCs, pDCs, and CD163 + macrophages has been reported to increase in MF (19, 20). Though their roles in MF remain to be elucidated, the involvement of mDCs, pDCs and macrophages in other malignancies is well established (21).…”

Section: Discussionmentioning

confidence: 99%

IL32 Is Progressively Expressed in Mycosis Fungoides Independent of Helper T-cell 2 and Helper T-cell 9 Polarization

Ohmatsu

Humme

Gulati

et al. 2014

Cancer Immunology Research

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Mycosis Fungoides (MF), the most common type of cutaneous T-cell lymphoma (CTCL) is characterized by a helper T cell 2 (Th2)-skewing with a mature CD4+ memory T-cell phenotype. Using skin samples from MF patients (n=21), healthy volunteers (n=17), individuals with atopic dermatitis (n=17) and psoriasis (n=9), we found interleukin (IL)-32 mRNA expression significantly higher in MF samples than in samples from benign inflammatory skin diseases, and its expression increases with disease progression. By immunohistochemistry and immunofluorescence, we confirmed IL-32 protein expression in many CD3+CD4+ T cells and some epidermotropic T cells in MF lesions. MyLa cells (a MF cell line) express IL-32, which in turn could promote cellular proliferation and viability in a dose-dependent fashion. IL-32-treated MyLa and CTCL HH cells up-regulated cell proliferation and survival genes. Of the major “polarizing” T-cell cytokines, only IFNγ mRNA increases with MF progression and positively correlates with IL-32 mRNA expression. Th2 cytokines do not positively correlate with IL-32 mRNA expression or MF progression. Furthermore, by flow cytometry, IL-32 production by circulating activated T-cells in healthy individuals was found in both IFNγ+ and IFNγ− cells but not in IL-4+ or IL-13+ cells. In conclusion, we have identified IL-32+ cells as the likely tumor cells in MF, and demonstrated that IL-32 mRNA expression increases with MF progression and is significantly higher than those in other skin diseases, and that some IL-32+ T cells are independent from the defined Th subsets. Thus IL-32 may play a unique role in MF progression as an autocrine cytokine.

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Distribution and Maturation of Skin Dendritic Cell Subsets in Two Forms of Cutaneous T-Cell Lymphoma: Mycosis Fungoides and Sézary Syndrome

Cited by 36 publications

References 36 publications

Indeterminate cell histiocytosis with naïve cells

Indeterminate cell histiocytosis with naïve cells

Monocyte-Derived Dendritic Cells from Patients with Dermatophytosis Restrict the Growth of Trichophyton rubrum and Induce CD4-T Cell Activation

IL32 Is Progressively Expressed in Mycosis Fungoides Independent of Helper T-cell 2 and Helper T-cell 9 Polarization

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