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Juxtacrine interaction of macrophages and bone marrow stromal cells induce interleukin-6 signals and promote cell migration

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Bone Research 2015年第2期3卷 100-111页

作者： Jia Chang Amy J koh Hernan Roca laurie k mccauley Department of Periodontics and Oral Medicine University of Michigan School of Dentistry Department of Periodontology University of Florida College of Dentistry Department of Pathology University of Michigan Medical School

The bone marrow contains a heterogeneous milieu of cells, including macrophages, which are key cellular mediators for resolving infection and inflammation. Macrophages are most well known for their ability to phagocytose foreign bodies or apoptotic cells to maintain homeostasis; however, little is known about their function in the bone microenvironment. In the current study, we investigated the in vitro interaction of murine macrophages and bone marrow stromal cells （BMSCs）, with focus on the juxtacrine induction of IL-6 signaling and the resultant effect on BMSC migration and growth. The juxtacrine interaction of primary mouse macrophages and BMSCs activated IL-6 signaling in the co-cultures, which subsequently enhanced BMSC migration and increased BMSC numbers. BMSCs and macrophages harvested from IL-6 knockout mice revealed that IL-6 signaling was essential for enhancement of BMSC migration and increased BMSC numbers via juxtacrine interactions. BMSCs were the main contributor of IL-6 signaling~ and hence activation of the IL-6/ gp130/STAT3 pathway. Meanwhile, macrophage derived IL-6 remained important for the overall production of IL-6 protein in the co-cultures. Taken together, these findings show the function of macmphages as co-inducers of migration and growth of BMSCs, which could directly influence bone formation and turnover.

关键词： BMSCs IL bone STAT cell

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Immune mediators in the tumor microenvironment of prostate cancer

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Chinese Journal of Cancer 2017年第3期36卷 131-138页

作者： Jinlu Dai Yi Lu Hernan Roca Jill M. keller Jian Zhang laurie k. mccauley Evan T. keller Department of Urology and Biointerfaces Institute University of MichiganAnn Arbor MI 48109 USA Center for Translational Medicine Guangxi Medical University Nanning Guangxi 520021 P. R. China Periodontics and Oral Medicine School of Dentistry University of Michigan Ann Arbor MI 48109 USA Department of Urology University of Michigan Ann Arbor MI 48109.8940 USA

Prostate cancer tissue is composed of both cancer cells and host *** milieu of host components that compose the tumor is termed the tumor microenvironment(TME).Host cells can be those derived from the tissue in which the tumor originates(e.g.,fibroblasts and endothelial cells)or those recruited,through chemotactic or other factors,to the tumor(e.g.,circulating immune cells).Some immune cells are key players in the TME and represent a large proportion of non-tumor cells found within the *** cells can have both anti-tumor and pro-tumor *** addition,crosstalk between prostate cancer cells and immune cells affects immune cell *** this review,we focus on immune cells and cytokines that contribute to tumor *** discuss T-regulatory and T helper17 cells and macrophages as key modulators in prostate cancer *** addition,we discuss the roles of interleukin-6 and receptor activator of nuclear factor kappa-B ligand in modulating prostate cancer *** review highlights the concept that immune cells and cytokines offer a potentially promising target for prostate cancer therapy.

关键词： Prostate cancer Tumor microenvironment Macrophage T-regulatory cell Th17 cell Interleukin-6 Receptor activator of nuclear factor kappa-B ligand

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Induction of osteoblast apoptosis stimulates macrophage efferocytosis and paradoxical bone formation

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Bone Research 2024年第3期12卷 634-647页

作者： Lena Batoon Amy Jean koh Susan Marie Millard Jobanpreet Grewal Fang Ming Choo Rahasudha kannan Aysia kinnaird Megan Avey Tatyana Teslya Allison Robyn Pettit laurie k.mccauley Hernan Roca Department of Periodontics and Oral Medicine University of MichiganSchool of DentistryAnn ArborMI 48109USA Mater Research Institute The University of QueenslandBrisbaneQLD 4102Australia Department of Pathology University of MichiganMedical SchoolAnn ArborMI 48109USA

Apoptosis is crucial for tissue homeostasis and organ *** bone,apoptosis is recognized to be a main fate of osteoblasts,yet the relevance of this process remains *** our murine model with inducible Caspase 9,the enzyme that initiates intrinsic apoptosis,we triggered apoptosis in a proportion of mature osteocalcin(OCN^(+))osteoblasts and investigated the impact on postnatal bone development.

关键词： development homeostasis bone

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A Case Report of a Peripheral Giant Cell Granuloma in a Patient on Forteo

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Open Journal of Stomatology 2015年第6期5卷 147-151页

作者： Flavia Pirih Ana Dilza Barroso Nikolaos Tatarakis kitrina Cordell laurie mccauley Paul Edwards Section of Periodontics University of California Los Angeles Los Angeles CA USA Unit of Periodontology Eastman Dental Institute University College of London London UK Division of Oral and Maxillofacial Pathology Department of Comprehensive Dentistry Louisiana State University School of Dentistry New Orleans LA USA University of Michigan School of Dentistry Ann Arbor MI USA Department of Oral Pathology Oral Medicine and Radiology Indiana University School of Dentistry Indianapolis IN USA

Peripheral giant cell granuloma (PGCG) is a common reactive gingival lesion that histologically resembles the central giant cell granuloma, and is a central lesion of the jaws. Occasionally, central giant cell granuloma-like lesions may be seen in association with hyperparathyroidism. Rarely, PGCG-like lesions have been described in a background of hyperparathyroidism. We describe the case of a 91-year-old woman taking teriparatide for the treatment of osteoporosis and presented with a peripheral giant cell granuloma of the mandibular posterior area.

关键词： Peripheral Giant Cell Granuloma Central giant Cell Granuloma Hyperparathyroidism Teriparatide Parathyroid Hormone

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