scholarly journals New Combination Strategies Using Programmed Cell Death 1/Programmed Cell Death Ligand 1 Checkpoint Inhibitors as a Backbone

2017 ◽  
Vol 23 (1) ◽  
pp. 10-22 ◽  
Author(s):  
Siwen Hu-Lieskovan ◽  
Antoni Ribas
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Checkpoint Inhibitors ◽  
New Combination ◽  
Combination Strategies ◽  
Programmed Cell Death 1

scholarly journals Bridging the Gap: Connecting the Mechanisms of Immune-Related Adverse Events and Autoimmunity Through PD-1

2022 ◽  
Vol 9 ◽  
Author(s):  
Adam Mor ◽  
Marianne Strazza
Keyword(s):  
Cell Death ◽  
T Cell ◽  
Programmed Cell Death ◽  
Adverse Events ◽  
Autoimmune Diseases ◽  
Tumor Regression ◽  
Checkpoint Inhibitors ◽  
Peripheral Tolerance ◽  
New Combination ◽  
Programmed Cell Death 1

The emergence of anti–cytotoxic T-lymphocyte antigen 4 (anti-CTLA-4), anti–programmed cell death 1 ligand (anti–PD-1), and anti–PD-L1 antibodies as immune checkpoint inhibitors (ICIs) revolutionized the treatment of numerous types of tumors. These antibodies, both alone and in combination, provide great clinical efficacy as evidenced by tumor regression and increased overall patients’ survival. However, with this success comes multiple challenges. First, while patients who respond to ICIs have outstanding outcomes, there remains a large proportion of patients who do not respond at all. This all-or-none response has led to looking downstream of programmed cell death 1 (PD-1) for additional therapeutic targets and for new combination therapies. Second, a majority of patients who receive ICIs go on to develop immune-related adverse events (irAEs) characterized by end-organ inflammation with T-cell infiltrates. The hallmarks of these clinically observed irAEs share many similarities with primary autoimmune diseases. The contribution of PD-1 to peripheral tolerance is a major mechanism for protection against expansion of self-reactive T-cell clones and autoimmune disease. In this review, we aim to bridge the gaps between our cellular and molecular knowledge of PD-1 signaling in T cells, ICI-induced irAEs, and autoimmune diseases. We will highlight shared mechanisms and the potential for new therapeutic strategies.

scholarly journals Predicting Responses to Checkpoint Inhibitors in Lymphoma: Are We Up to the Standards of Solid Tumors?

2020 ◽  
Vol 14 ◽  
pp. 117955492097636
Author(s):  
Ah-Reum Jeong ◽  
Edward D Ball ◽  
Aaron Michael Goodman
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
B Cell ◽  
Solid Tumors ◽  
Cell Lymphoma ◽  
Checkpoint Inhibitors ◽  
B Cell Lymphoma ◽  
Hematologic Malignancies ◽  
Checkpoint Blockade ◽  
Programmed Cell Death 1

Treatment of cancer has transformed with the introduction of checkpoint inhibitors. However, the majority of solid tumor patients do not respond to checkpoint blockade. In contrast, the response rate to programmed cell death 1 (PD-1) blockade in relapsed/refractory classical Hodgkin lymphoma (cHL) is 65% to 84% which is the highest among all cancers. Currently, checkpoint inhibitors are only approved for cHL and primary mediastinal B-cell lymphoma as the responses to single-agent checkpoint blockade in other hematologic malignancies is disappointingly low. Various established biomarkers such as programmed cell death 1 ligand 1 (PD-L1) protein surface expression, mismatch repair (MMR) status, and tumor mutational burden (TMB) are routinely used in clinical decision-making in solid tumors. In this review, we will explore these biomarkers in the context of hematologic malignancies. We review characteristic 9p24.1 structural alteration in cHL and primary mediastinal B-cell lymphoma (PMBCL) as a basis for response to PD-1 inhibition, as well as the role of antigen presentation pathways. We also explore the reported frequencies of MMR deficiency in various hematologic malignancies and investigate TMB as a predictive marker.

scholarly journals Clinical Applications of Immunotherapy Combination Methods and New Opportunities for the Future

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Ece Esin
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Checkpoint Inhibitors ◽  
Innate Immune ◽  
Small Subset ◽  
New Class ◽  
Combination Strategies ◽  
Combination Methods ◽  
Immune Editing ◽  
Cell Death Protein

In the last decade, we have gained a deeper understanding of innate immune system. The mechanism of the continuous guarding of progressive mutations happening in a single cell was discovered and the production and the recognition of tumor associated antigens by the T-cells and elimination of numerous tumors by immune-editing were further understood. The new discoveries on immune mechanisms and its relation with carcinogenesis have led to development of a new class of drugs called immunotherapeutics. T lymphocyte-associated antigen 4, programmed cell death protein 1, and programmed cell death protein ligand 1 are the classes drugs based on immunologic manipulation and are collectively known as the “checkpoint inhibitors.” Checkpoint inhibitors have shown remarkable antitumor efficacy in a broad spectrum of malignancies; however, the strongest and most durable immune responses do not last long and the more durable responses only occur in a small subset of patients. One of the solutions which have been put forth to overcome these challenges is combination strategies. Among the dual use of methods, a backbone with either PD-1 or PD-L1 antagonist drugs alongside with certain cytotoxic chemotherapies, radiation, targeted drugs, and novel checkpoint stimulators is the most promising approach and will be on stage in forthcoming years.

Side effects of immune-checkpoint inhibitors: Can multiple side effects be seen in a patient?

2021 ◽  
pp. 107815522110381
Author(s):  
Esra Özyurt ◽  
Serhat Özçelik ◽  
Heves Sürmeli ◽  
Mehmet Çelik ◽  
Murat Ayhan ◽  
...  
Keyword(s):  
T Cells ◽  
Cell Death ◽  
Side Effects ◽  
Programmed Cell Death ◽  
Adverse Events ◽  
Checkpoint Inhibitors ◽  
Host Cells ◽  
Immunoglobulin G4 ◽  
Programmed Cell Death 1 ◽  
Recurrent Renal Cell Carcinoma

Introduction Nivolumab is a human immunoglobulin G4 monoclonal antibody that inhibits programmed cell death-1 activity by binding to the programmed cell death-1 receptors. Cancer cells express increased number of programmed cell death-1 ligands and this allows them to escape the cytotoxic effects of the T cells. Therefore, the negative programmed cell death-1 receptor signal regulates T-cell proliferation and activation is disrupted. However, this change in the activity of the T cells can cause them to lose their ability to recognize host cells. The immune response enabled by these agents has led to side effects, commonly known as “immune-related adverse events.” Case report We report a case of a 66-year-old male patient who was treated with nivolumab for recurrent renal cell carcinoma presented with hepatitis and adrenalitis. Three weeks after starting nivolumab, the patient had abdominal pain and weakness, and then aspartate and alanine transaminase levels were found to be elevated. Management and outcome Hepatitis was predicted to be due to nivolumab, because other causes were excluded. He started using oral methylprednisolone and then, hepatitis improved. However, while receiving methylprednisolone treatment, fludrocortisone was started with the pre-diagnosis of adrenalitis due to the persistence of fatigue, weakness, and hyponatremia and hyperkalemia. With both treatments, the patient's symptoms and sodium and potassium level returned to normal. Discussion This case emphasizes the need for patient's education and awareness of immune-related adverse events, and the importance of understanding the management of life-threatening complications of the checkpoint inhibitors, because these side effects require prompt recognition and treatment.

Practical cardiovascular imaging approach to diagnose immune checkpoint inhibitor myocarditis

2020 ◽  
Author(s):  
Lavanya Kondapalli ◽  
Theresa Medina ◽  
Daniel W Groves
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Immune Checkpoint ◽  
Kinase Inhibitors ◽  
Cytotoxic T Lymphocyte ◽  
Checkpoint Inhibitor ◽  
Checkpoint Inhibitors ◽  
Cancer Subtypes ◽  
Programmed Cell Death 1 ◽  
New Strategy

Abstract Immuno-oncology employs various therapeutic strategies that harness a patient’s own immune system to fight disease and has been a promising new strategy for cancer therapy over the last decade. Immune checkpoint inhibitors (ICI), are monoclonal antibodies, that increase antitumor immunity by blocking intrinsic down-regulators of immunity, such as cytotoxic T-lymphocyte antigen 4 (CTLA-4) and programmed cell death 1 (PD-1) or its ligand, programmed cell death ligand 1 (PD-L1). Seven ICIs are currently approved by the Food and Drug Administration and have increased the overall survival for patients with various cancer subtypes. These are used either as single agents or in combination with other checkpoint inhibitors, small molecular kinase inhibitors or cytotoxic chemotherapies. There are also many other immune modifying agents including other checkpoint inhibitor antibodies that are under investigation in clinical trials.

scholarly journals PD-L1, an Important Immune Checkpoint Regulator, Is Suppressed by miR-34a in Head and Neck Squamous Cell Carcinoma

2020 ◽  
Author(s):  
Kenjiro Higashi ◽  
Takenori Ogawa ◽  
Yuriko Saiki ◽  
Tomohiko Ishikawa ◽  
Yuta Kobayashi ◽  
...  
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Head And Neck ◽  
Cell Lines ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitors ◽  
Checkpoint Inhibitors ◽  
Expression Levels ◽  
Programmed Cell Death 1 ◽  
Hnscc Cell

Abstract Background: Key molecules regulating the immune checkpoint have shed light on the efforts to control several cancers. Recently, immune checkpoint inhibitors for cancer therapy such as antibodies against programmed cell death 1 (PD-1), programmed cell death 1 ligand 1 (PD-L1), and cytotoxic T-lymphocyte associated protein 4 (CTLA4) have been developed. In head and neck squamous cell carcinomas (HNSCCs), such immune checkpoint inhibitors have come into clinical use and are expected to improve patients’ prognoses. Recently, miR-34a has been shown to be a downstream micro RNA of TP53 that regulates PD-L1 in several types of cancer. To reveal the correlations between miR-34a and PD-L1 in HNSCCs in terms of clinical significance, we analyzed 19 HNSCC cell lines.Methods: We measured the expression levels of miR-34a and PD-L1 in 10 HNSCC cell lines as well as in 9 of their derived acquired cisplatin (CDDP) resistant cell lines by qRT-PCR and Western blotting. Results were further analyzed by their TP53 statuses. We also investigated the changes in PD-L1 expression levels after miR-34a precursor- or inhibitor-mediated forced expression or suppression in HNSCC cell lines. Results: We observed inverse correlations between both mRNA and protein expression levels of miR-34a and PD-L1. No significant differences in miR-34a levels were observed with regard to TP53 status. Forced expression of miR-34a decreased PD-L1 expression, and suppression of miR-34a increased PD-L1 expression. Conclusion: Our present results suggest that miR-34a negatively regulates PD-L1 expression, possibly in a TP53 independent manner in HNSCC.

scholarly journals Anti-Cancer Activity of PAK4/NAMPT Inhibitor and Programmed Cell Death Protein-1 Antibody in Kidney Cancer

Kidney360 ◽  
2020 ◽  
Vol 1 (5) ◽  
pp. 376-388
Author(s):  
Josephine F. Trott ◽  
Omran Abu Aboud ◽  
Bridget McLaughlin ◽  
Katie L. Anderson ◽  
Jaime F. Modiano ◽  
...  
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Kidney Cancer ◽  
Renal Cell ◽  
Checkpoint Inhibitors ◽  
The United States ◽  
Nicotinamide Phosphoribosyltransferase ◽  
Programmed Cell Death 1 ◽  
Anti Cancer ◽  
Cell Death Protein

BackgroundKidney cancer (or renal cell carcinoma, RCC) is the sixth most common malignancy in the United States and is increasing in incidence. Despite new therapies, including targeted therapies and immunotherapies, most RCCs are resistant to treatment. Thus, several laboratories have been evaluating new approaches to therapy, both with single agents as well as combinations. Although we have previously shown efficacy of the dual PAK4/nicotinamide phosphoribosyltransferase (NAMPT) inhibitor KPT-9274, and the immune checkpoint inhibitors (CPI) have shown utility in the clinic, there has been no evaluation of this combination either clinically or in an immunocompetent animal model of kidney cancer.MethodsIn this study, we use the renal cell adenocarcinoma (RENCA) model of spontaneous murine kidney cancer. Male BALB/cJ mice were injected subcutaneously with RENCA cells and, after tumors were palpable, they were treated with KPT-9274 and/or anti–programmed cell death 1 (PDCD1; PD1) antibody for 21 days. Tumors were measured and then removed at animal euthanasia for subsequent studies.ResultsWe demonstrate a significant decrease in allograft growth with the combination treatment of KPT-9274 and anti-PD1 antibody without significant weight loss by the animals. This is associated with decreased (MOUSE) Naprt expression, indicating dependence of these tumors on NAMPT in parallel to what we have observed in human RCC. Histology of the tumors showed substantial necrosis regardless of treatment condition, and flow cytometry of antibody-stained tumor cells revealed that the enhanced therapeutic effect of KPT-9274 and anti-PD1 antibody was not driven by infiltration of T cells into tumors.ConclusionsThis study highlights the potential of the RENCA model for evaluating immunologic responses to KPT-9274 and checkpoint inhibitor (CPI) and suggests that therapy with this combination could improve efficacy in RCC beyond what is achievable with CPI alone.

scholarly journals Immunotherapy and non-small cell lung cancers

2017 ◽  
Vol 5 (3) ◽  
pp. 6-10
Author(s):  
Letizia Laera ◽  
Silvia Novello
Keyword(s):  
Lung Cancer ◽  
Cell Death ◽  
Programmed Cell Death ◽  
Paradigm Shift ◽  
Advanced Nsclc ◽  
Checkpoint Inhibitors ◽  
Small Cell ◽  
Small Cell Lung ◽  
Lung Cancers ◽  
Programmed Cell Death 1

Lung cancer is the leading cause of cancer mortality, and non-small cell lung cancer (NSCLC) accounts for more than 85% of all lung cancers. Immunotherapy has brought a paradigm shift to the treatment of NSCLC. Immune checkpoint inhibitors have emerged as one of the main new therapeutic options for patients with advanced NSCLC. This brief review focuses on analyzing the biological rationale and early clinical data available concerning immunotherapeutic strategies, and more specifically, programmed cell death-1 (PD-1) inhibitors and programmed cell death-ligand 1 (PD-L1) inhibitors.

scholarly journals Insights into Potential Pathogenesis and Treatment Options for Immune-Checkpoint Inhibitor-Related Pneumonitis

Biomedicines ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1484
Author(s):  
Hiroyuki Ando ◽  
Kunihiro Suzuki ◽  
Toyoshi Yanagihara
Keyword(s):  
Cell Death ◽  
Programmed Cell Death ◽  
Immune Checkpoint ◽  
Immune Checkpoint Inhibitor ◽  
Cytotoxic T Lymphocyte ◽  
Checkpoint Inhibitors ◽  
Treatment Options ◽  
Frequent Adverse Event ◽  
Programmed Cell Death 1 ◽  
New Treatment

Immune-checkpoint inhibitors (ICIs) targeting cytotoxic T-lymphocyte antigen 4 (CTLA-4), programmed cell death-1 (PD-1), and programmed cell death-1-ligand 1 (PD-L1) have become new treatment options for various malignancies. ICIs bind to immune-checkpoint inhibitory receptors or to the foregoing ligands and block inhibitory signals to release the brakes on the immune system, thereby enhancing immune anti-tumor responses. On the other hand, unlike conventional chemotherapies, ICIs can cause specific side effects, called immune-related adverse events (irAEs). These toxicities may affect various organs, including the lungs. ICI-related pneumonitis (ICI-pneumonitis) is not the most frequent adverse event, but it is serious and can be fatal. In this review, we summarize recent findings regarding ICI-pneumonitis, with a focus on potential pathogenesis and treatment.

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