TY  - JOUR
A1  - Schilbach, Karin
A1  - Alkhaled, Mohammed
A1  - Welker, Christian
A1  - Eckert, Franziska
A1  - Blank, Gregor
A1  - Ziegler, Hendrik
A1  - Sterk, Marco
A1  - Müller, Friederike
A1  - Sonntag, Katja
A1  - Wieder, Thomas
A1  - Braumüller, Heidi
A1  - Schmitt, Julia
A1  - Eyrich, Matthias
A1  - Schleicher, Sabine
A1  - Seitz, Christian
A1  - Erbacher, Annika
A1  - Pichler, Bernd J.
A1  - Müller, Hartmut
A1  - Tighe, Robert
A1  - Lim, Annick
A1  - Gillies, Stephen D.
A1  - Strittmatter, Wolfgang
A1  - Röcken, Martin
A1  - Handgretinger, Rupert
T1  - Cancer-targeted IL-12 controls human rhabdomyosarcoma by senescence induction and myogenic differentiation
JF  - OncoImmunology
N2  - Stimulating the immune system to attack cancer is a promising approach, even for the control of advanced cancers. Several cytokines that promote interferon-γ-dominated immune responses show antitumor activity, with interleukin 12 (IL-12) being of major importance. Here, we used an antibody-IL-12 fusion protein (NHS-IL12) that binds histones of necrotic cells to treat human sarcoma in humanized mice. Following sarcoma engraftment, NHS-IL12 therapy was combined with either engineered IL-7 (FcIL-7) or IL-2 (IL-2MAB602) for continuous cytokine bioavailability. NHS-IL12 strongly induced innate and adaptive antitumor immunity when combined with IL-7 or IL-2. NHS-IL12 therapy significantly improved survival of sarcoma-bearing mice and caused long-term remissions when combined with IL-2. NHS-IL12 induced pronounced cancer cell senescence, as documented by strong expression of senescence-associated p16\(^{INK4a}\) and nuclear translocation of p-HP1γ, and permanent arrest of cancer cell proliferation. In addition, this cancer immunotherapy initiated the induction of myogenic differentiation, further promoting the hypothesis that efficient antitumor immunity includes mechanisms different from cytotoxicity for efficient cancer control in vivo.
KW  - TH17 cells
KW  - cancer-targeted IL-12
KW  - differentiation
KW  - humanized mice
KW  - immunocytokine
KW  - immunotherapy
KW  - M1/M2 macrophages
KW  - rhabdomyosarcoma
KW  - TH1-induced senescence
KW  - tumor-infiltrating lymphocytes
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-154579
VL  - 4
IS  - 7
ER  - 
TY  - JOUR
A1  - Hung, Sophia
A1  - Dreher, Liane
A1  - Diessner, Joachim
A1  - Schwarz, Stefan
A1  - Ohlsen, Knut
A1  - Hertlein, Tobias
T1  - MRSA infection in the thigh muscle leads to systemic disease, strong inflammation, and loss of human monocytes in humanized mice
JF  - Frontiers in Immunology
N2  - MRSA (Methicillin-resistant Staphylococcus aureus) is the second-leading cause of deaths by antibiotic-resistant bacteria globally, with more than 100,000 attributable deaths annually. Despite the high urgency to develop a vaccine to control this pathogen, all clinical trials with pre-clinically effective candidates failed so far. The recent development of “humanized” mice might help to edge the pre-clinical evaluation closer to the clinical situation and thus close this gap. We infected humanized NSG mice (huNSG: (NOD)-scid IL2R\(_γ\)\(^{null}\) mice engrafted with human CD34+ hematopoietic stem cells) locally with S. aureus USA300 LAC* lux into the thigh muscle in order to investigate the human immune response to acute and chronic infection. These mice proved not only to be more susceptible to MRSA infection than wild-type or “murinized” mice, but displayed furthermore inferior survival and signs of systemic infection in an otherwise localized infection model. The rate of humanization correlated directly with the severity of disease and survival of the mice. Human and murine cytokine levels in blood and at the primary site of infection were strongly elevated in huNSG mice compared to all control groups. And importantly, differences in human and murine immune cell lineages surfaced during the infection, with human monocyte and B cell numbers in blood and bone marrow being significantly reduced at the later time point of infection. Murine monocytes in contrast behaved conversely by increasing cell numbers. This study demonstrates significant differences in the in vivo behavior of human and murine cells towards S. aureus infection, which might help to sharpen the translational potential of pre-clinical models for future therapeutic approaches.
KW  - humanized mice
KW  - MRSA - methicillin-resistant Staphylococcus aureus
KW  - monocyte
KW  - bacterial infection model
KW  - inflammation
KW  - NSG
KW  - staphylocccal infection/epidemiology
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-278050
SN  - 1664-3224
VL  - 13
ER  -