Dendritic-Cell-Based Therapeutic Cancer Vaccines

The past decade has seen tremendous developments in novel cancer therapies through the targeting of tumor-cell-intrinsic pathways whose activity is linked to genetic alterations and the targeting of tumor-cell-extrinsic factors, such as growth factors. Furthermore, immunotherapies are entering the clinic at an unprecedented speed after the demonstration that T cells can efficiently reject tumors and that their antitumor activity can be enhanced with antibodies against immune-regulatory molecules (checkpoint blockade). Current immunotherapy strategies include monoclonal antibodies against tumor cells or immune-regulatory molecules, cell-based therapies such as adoptive transfer of ex-vivo-activated T cells and natural killer cells, and cancer vaccines. Herein, we discuss the immunological basis for therapeutic cancer vaccines and how the current understanding of dendritic cell and T cell biology might enable the development of next-generation curative therapies for individuals with cancer

Will the Making of Plasmacytoid Dendritic Cells in Vitro Help Unravel Their Mysteries?

[No abstract available

A Review of Emergency Visits made by Youth and Adults with Autism Spectrum Disorder from the Parent Perspective

Purpose: Past research has shown individuals with autism spectrum disorder (ASD) visit hospital emergency departments (ED) at high rates. In order to assist individuals with ASD, their families and health care providers to improve ED care, it is important to understand these encounters in greater detail. This study aimed to provide a descriptive summary of the ED experiences of adolescents and adults with ASD, from the perspective of their families. Design/Methodology/Approach: A subset of data from a larger prospective cohort study was used. Specifically, 46 parents of adolescents and adults with ASD provided details concerning 49 ED visits over a 12-month period. Findings: Results suggest a range of presentations requiring ED use, and also diverse profiles of those with ASD who visited the ED, in terms of age, gender, and ASD severity. While overall degree of satisfaction with care received in the ED was high, parents provided recommendations to improve the ED experiences for their family members with ASD. Originality/value: This is the first study to provide detailed accounts of ED visits from the perspective of parents of adolescents and adults with ASD. Families play an important role in the lives of individuals with ASD across the lifespan and it is important to include their perspective to improve hospital- based care for those with ASD

Humanized mice: are we there yet?

Animal models have been instrumental in increasing the understanding of human physiology, particularly immunity. However, these animal models have been limited by practical considerations and genetic diversity. The creation of humanized mice that carry partial or complete human physiological systems may help overcome these obstacles. The National Institute of Allergy and Infectious Diseases convened a workshop on humanized mouse models for immunity in Bethesda, MD, on June 13–14, 2005, during which researchers discussed the benefits and limitations of existing animal models and offered insights into the development of future humanized mouse models

Comparative effects of mindfulness and support and information group interventions for parents of adults with autism spectrum disorders and other developmental disabilities

This study evaluated two community based interventions for parents of adults with autism spectrum disorder and other developmental disabilities. Parents in the mindfulness group reported significant reductions in psychological distress, while parents in the support and information group did not. Reduced levels of distress in the mindfulness group were maintained at 20 weeks follow-up. Mindfulness scores and mindful parenting scores and related constructs (e.g., self-compassion) did not differ between the two groups. Results suggest the psychological components of the mindfulness based group intervention were effective over and above the non-specific effects of group processes and informal support

P18-11. DALIA: dendritic cell and lipopeptide-induced immunity against AIDS: a phase I trial

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Expansion of Melanoma-specific Cytolytic CD8+ T Cell Precursors in Patients with Metastatic Melanoma Vaccinated with CD34+ Progenitor-derived Dendritic Cells

Cancer vaccines aim at inducing (a) tumor-specific effector T cells able to reduce/eliminate the tumor mass, and (b) long-lasting tumor-specific memory T cells able to control tumor relapse. We have shown earlier, in 18 human histocompatibility leukocyte antigen (HLA)-A*0201 patients with metastatic melanoma, that vaccination with peptide-loaded CD34–dendritic cells (DCs) leads to expansion of melanoma-specific interferon γ–producing CD8+ T cells in the blood. Here, we show in 9 out of 12 analyzed patients the expansion of cytolytic CD8+ T cell precursors specific for melanoma differentiation antigens. These precursors yield, upon single restimulation with melanoma peptide–pulsed DCs, cytotoxic T lymphocytes (CTLs) able to kill melanoma cells. Melanoma-specific CTLs can be grown in vitro and can be detected in three assays: (a) melanoma tetramer binding, (b) killing of melanoma peptide–pulsed T2 cells, and (c) killing of HLA-A*0201 melanoma cells. The cytolytic activity of expanded CTLs correlates with the frequency of melanoma tetramer binding CD8+ T cells. Thus, CD34-DC vaccines can expand melanoma-specific CTL precursors that can kill melanoma antigen–expressing targets. These results justify the design of larger follow-up studies to assess the immunological and clinical response to peptide-pulsed CD34-DC vaccines

Interferon and Granulopoiesis Signatures in Systemic Lupus Erythematosus Blood

Systemic lupus erythematosus (SLE) is a prototype systemic autoimmune disease characterized by flares of high morbidity. Using oligonucleotide microarrays, we now show that active SLE can be distinguished by a remarkably homogeneous gene expression pattern with overexpression of granulopoiesis-related and interferon (IFN)-induced genes. Using the most stringent statistical analysis (Bonferroni correction), 15 genes were found highly up-regulated in SLE patients, 14 of which are targets of IFN and one, defensin DEFA-3, a major product of immature granulocytes. A more liberal correction (Benjamini and Hochberg correction) yielded 18 additional genes, 12 of which are IFN-regulated and 4 granulocyte-specific. Indeed immature neutrophils were identified in a large fraction of SLE patients white blood cells. High dose glucocorticoids, a standard treatment of disease flares, shuts down the interferon signature, further supporting the role of this cytokine in SLE. The expression of 10 genes correlated with disease activity according to the SLEDAI. The most striking correlation (P < 0.001, r = 0.55) was found with the formyl peptide receptor-like 1 protein that mediates chemotactic activities of defensins. Therefore, while the IFN signature confirms the central role of this cytokine in SLE, microarray analysis of blood cells reveals that immature granulocytes may be involved in SLE pathogenesis

Multiplex immunofluorescence-guided laser capture microdissection for spatial transcriptomics of metastatic melanoma tissues.

We describe a pipeline for optimized and streamlined multiplexed immunofluorescence-guided laser capture microdissection allowing the harvest of individual cells based on their phenotype and tissue localization for transcriptomic analysis with next-generation RNA sequencing. Here, we analyze transcriptomes of CD3+ T cells, CD14+ monocytes/macrophages, and melanoma cells in non-dissociated metastatic melanoma tissue. While this protocol is described for melanoma tissues, we successfully applied it to human tonsil, skin, and breast cancer tissues as well as mouse lung tissues. For complete details on the use and execution of this protocol, please refer to Martinek et al. (2022)

A systematic review and synthesis of outcome domains for use within forensic services for people with intellectual disabilities

Aims. In response to the large number of people with intellectual disabilities (IDs) and offending behaviour being treated in psychiatric hospitals, this study identified and developed the domains that should be used to measure treatment outcomes for this population using both a systematic review and consultation exercises. Methods. A systematic search of relevant databases, and sixty studies met the eligibility criteria, and findings were synthesised using content analysis. The findings were refined within a consultation and consensus exercises with carers, service users, and experts. Results. The final framework encompassed three a priori superordinate domains (a) effectiveness, (b) patient safety, and (c) patient and carer experience. Within each of these, further sub-domains emerged from our systematic review and consultation exercises. These included severity of clinical symptoms, offending behaviours, reactive and restrictive interventions, quality of life and patient satisfaction. Conclusions. To index recovery, services need to measure outcome using this framework