Abstract:
:The presence and activity of CD8+ T cells within the tumor microenvironment are essential for the control of tumor growth. Utilizing B16-F10 melanoma tumors that express altered peptide ligands of chicken ovalbumin, OVA257-264, we measured high- and low-affinity OVA-specific responses following adoptive transfer of OT-I CD8+ T cell into mice subsequently challenged with tumors. T-cell receptor (TCR) affinity positively correlated with the frequency of OT-I tumor-infiltrating lymphocytes (TIL). Differences in TCR affinity inversely corresponded to in vivo tumor growth rate. Blockade of the PD-1 and CTLA-4 checkpoints preferentially increased the frequency and antitumor function of TIL responding to high-affinity antigens, while failing to enhance the antitumor activity of low-affinity T cells. To determine whether lowering the TCR activation threshold could enhance the breadth and magnitude of the antitumor T-cell response, we inhibited Src homology region 2 domain-containing phosphatase 1 (SHP-1) in OT-I T cells prior to tumor antigen exposure. SHP-1 knockdown increased the cytokine-producing potential of high- and low-affinity T cells but failed to enhance control of tumor growth. In contrast, when SHP-1 knockdown of OT-I T cells was combined with immunotherapy, we observed a significant and long-lasting suppression of tumor growth mediated by low-affinity T cells. We conclude that lowering the TCR activation threshold by targeting SHP-1 expands the repertoire of T cells available to respond to conventional checkpoint blockade, leading to enhanced control of tumor growth.
journal_name
Cancer Immunol Resjournal_title
Cancer immunology researchauthors
Snook JP,Soedel AJ,Ekiz HA,O'Connell RM,Williams MAdoi
10.1158/2326-6066.CIR-19-0690subject
Has Abstractpub_date
2020-04-01 00:00:00pages
506-517issue
4eissn
2326-6066issn
2326-6074pii
2326-6066.CIR-19-0690journal_volume
8pub_type
杂志文章abstract::In hepatocellular carcinoma (HCC), surgical resection is associated with high recurrence rate, and no effective adjuvant therapy currently exists. We initiated a pilot randomized trial of perioperative immunotherapy with nivolumab and ipilimumab for resectable HCC. Here, we provide an illustrative report of a case tha...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-18-0605
更新日期:2019-09-01 00:00:00
abstract::Monocytes may contribute to tumor progression in part by mediating tumor-induced immunosuppression. Alterations to the monocyte populations and functions in untreated patients with late-stage melanoma are not fully understood. To characterize these alterations, we compared the frequency, phenotype, and functional capa...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-13-0094
更新日期:2014-03-01 00:00:00
abstract::Hypoxia-driven, A2A adenosine receptor (A2AR)-mediated (hypoxia-A2-adenosinergic), T-cell-autonomous immunosuppression was first recognized as critical and nonredundant in protecting normal tissues from inflammatory damage and autoimmunity. However, this immunosuppressive mechanism can be highjacked by bacteria and tu...
journal_title:Cancer immunology research
pub_type: 杂志文章,评审
doi:10.1158/2326-6066.CIR-14-0075
更新日期:2014-07-01 00:00:00
abstract::Caspase recuitment domain-containing protein 9 (CARD9) functions in different inflammation pathways to elicit responses to microbial signals and is known to affect intestinal inflammation. Examining the APC(min) mouse model of intestinal tumorigenesis and using stringently controlled, sex- and age-matched pairs of CAR...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-14-0148
更新日期:2015-07-01 00:00:00
abstract::MHC-bound peptides from aberrant proteins may be a specific immunotherapeutic target on cancer cells. Because of difficulties in identifying such antigens, viral or model antigens have so far been used to study their biological relevance. We here identify a naturally existing human T-cell epitope derived from a trunca...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-18-0137
更新日期:2019-05-01 00:00:00
abstract::We conducted in vitro studies and a clinical trial for patients with squamous cell carcinoma of the head and neck (SCCHN) to study the relationship between FcγRIIIa polymorphisms and antibody-dependent cellular cytotoxicity (ADCC). In vitro, FcγRIIIa genotype was correlated with ADCC and innate cytotoxicity using natu...
journal_title:Cancer immunology research
pub_type: 杂志文章,多中心研究
doi:10.1158/2326-6066.CIR-14-0188
更新日期:2015-05-01 00:00:00
abstract::We assessed the contribution of IL1 signaling molecules to malignant tumor growth using IL1β-/-, IL1α-/-, and IL1R1-/- mice. Tumors grew progressively in IL1R-/- and IL1α-/- mice but were often absent in IL1β-/- mice. This was observed whether tumors were implanted intradermally or injected intravenously and was true ...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-19-0552
更新日期:2020-05-01 00:00:00
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journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-19-0703
更新日期:2020-05-01 00:00:00
abstract::Modulating the function of immune receptors with antibodies is ushering in a new era in cancer immunotherapy. With the notable exception of PD-1 blockade used as monotherapy, immune modulation can be associated with significant toxicities that are expected to escalate with the development of increasingly potent immune...
journal_title:Cancer immunology research
pub_type: 杂志文章,评审
doi:10.1158/2326-6066.CIR-15-0194
更新日期:2015-11-01 00:00:00
abstract::Innate lymphoid cells (ILC) are responsible for mucosal tissue homeostasis and are involved in the progression and suppression of several types of cancer. However, the effects of ILCs on colorectal cancer are poorly understood. We characterized human ILCs in normal colon and colorectal cancer tissue, investigating the...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-19-0775
更新日期:2020-06-01 00:00:00
abstract::Delayed radiation-induced vasculitic leukoencephalopathy related to stereotactic radiosurgery (SRS) of brain metastases has been reported to manifest clinically 9 to 18 months after treatment. Immune-modulating therapies have been introduced to treatment regimens for malignancies with metastatic predilection to the br...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-15-0238
更新日期:2016-06-01 00:00:00
abstract::Immune checkpoint inhibitors are promising treatments for patients with a variety of malignancies. Toward understanding the determinants of response to immune checkpoint inhibitors, it was previously demonstrated that the presence of somatic mutations is associated with benefit from checkpoint inhibition. A hypothesis...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-16-0019
更新日期:2017-01-01 00:00:00
abstract::Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer death in the United States. Pancreatic tumors are minimally infiltrated by T cells and are largely refractory to immunotherapy. Accordingly, the role of T-cell immunity in pancreatic cancer has been somewhat overlooked. Here, we hypothesized ...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-20-0272
更新日期:2021-01-28 00:00:00
abstract::Natural killer (NK) cells contribute to clinical responses in patients treated with rituximab, but the rules determining NK-cell responsiveness to mAb therapies are poorly defined. A deeper understanding of the mechanisms responsible for antibody-dependent cellular cytotoxicity (ADCC) could yield useful biomarkers for...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-13-0158
更新日期:2014-09-01 00:00:00
abstract::Programmed death 1 (PD-1) and PD ligand 1 (PD-L1) inhibitors have shown activity in metastatic clear cell renal cell carcinoma (ccRCC). Data on the activity of these agents in patients with non-clear cell RCC (nccRCC) or patients with sarcomatoid/rhabdoid differentiation are limited. In this multicenter analysis, we e...
journal_title:Cancer immunology research
pub_type: 杂志文章,多中心研究
doi:10.1158/2326-6066.CIR-17-0475
更新日期:2018-07-01 00:00:00
abstract::Triple-negative breast cancer (TNBC) cells are modulated in reaction to tumor-infiltrating lymphocytes. However, their specific responses to this immune pressure are unknown. In order to address this question, we first used mRNA sequencing to compare the immunophenotype of the TNBC cell line MDA-MB-231 and the luminal...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-16-0182
更新日期:2017-04-01 00:00:00
abstract::Multiple myeloma is characterized by the clonal expansion of malignant plasma cells in the bone marrow. But the phenotypic diversity and the contribution of less predominant B-lineage clones to the biology of this disease have been controversial. Here, we asked whether cells bearing the dominant multiple myeloma immun...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-17-0012
更新日期:2017-09-01 00:00:00
abstract::One limiting factor of CAR T-cell therapy for treatment of solid cancers is the suppressive tumor microenvironment (TME), which inactivates the function of tumor-infiltrating lymphocytes (TIL) through the production of immunosuppressive molecules, such as adenosine. Adenosine inhibits the function of CD4+ and CD8+ T c...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-17-0502
更新日期:2018-07-01 00:00:00
abstract::Immunotherapies targeting T lymphocytes are revolutionizing cancer therapy but only benefit a subset of patients, especially in colorectal cancer. Thus, additional insight into the tumor microenvironment (TME) is required. Eosinophils are bone marrow-derived cells that have been largely studied in the context of aller...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-18-0494
更新日期:2019-03-01 00:00:00
abstract::Myeloid derived suppressor cells (MDSC) are a heterogeneous group of immature cells that accumulate in the peripheral blood and tumor microenvironment and are barriers to cancer therapy. MDSCs serve as prognostic biomarkers and are targets for therapy. On the basis of surface markers, three subsets of MDSCs have been ...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-19-0556
更新日期:2020-06-01 00:00:00
abstract::Freeze-dried black raspberries (BRB), their component anthocyanins (AC), and a metabolite of BRB ACs, protocatechuic acid (PCA), inhibit the development of esophageal cancer in rats induced by the carcinogen, N-nitrosomethylbenzylamine (NMBA). All three components reduce inflammation in the esophagus and in plasma. Th...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-15-0091
更新日期:2016-01-01 00:00:00
abstract::The cytokine IL15 is required for survival and activation of natural killer (NK) cells as well as expansion of NK-cell populations. Here, we compare the effects of continuous IL15 infusions on NK-cell subpopulations in cancer patients. Infusions affected the CD56bright NK-cell subpopulation in that the expansion rates...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-17-0279
更新日期:2017-10-01 00:00:00
abstract::Pancreatic ductal adenocarcinoma (PDA) is an aggressive malignancy characterized by a paucity of tumor-proximal CD8+ T cells and resistance to immunotherapeutic interventions. Cancer-associated mechanisms that elicit CD8+ T-cell exclusion and resistance to immunotherapy are not well-known. Here, using a Kras- and p53-...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-19-0349
更新日期:2020-03-01 00:00:00
abstract::The current standard of care for treatment of metastatic renal cell carcinoma (mRCC) patients is PD-1/PD-L1 inhibitors until progression or toxicity. Here, we characterize the clinical outcomes for 19 mRCC patients who experienced an initial clinical response (any degree of tumor shrinkage), but after immune-related a...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-17-0220
更新日期:2018-04-01 00:00:00
abstract::Tumors use various mechanisms to avoid immune destruction. Cyclooxygenase-2 (COX-2) expression may be a driver of immune suppression in melanoma, but the mechanisms involved remain elusive. Here, we show that COX-2 expression drives constitutive expression of indoleamine 2,3-dioxygenase 1 (IDO1) in human tumor cells. ...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-16-0400
更新日期:2017-08-01 00:00:00
abstract::Cancer-testis (CT) antigens are attractive tumor antigens for cancer immunotherapy. They comprise a group of proteins normally expressed in germ cells and aberrantly activated in a variety of human cancers. The protein expression of eight cancer-testis antigens [MAGEA, NY-ESO-1, GAGE, MAGEC1 (CT7), MAGEC2 (CT10), CT45...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-13-0124
更新日期:2014-05-01 00:00:00
abstract::Tumor-infiltrating lymphocytes (TIL) in colorectal cancer liver metastases (CLM) have been associated with more favorable patient outcomes, but whether MHC class I (MHC-I) expression on cancer cells affects prognosis is uncertain. Immunohistochemistry was performed on a tissue microarray of 158 patients with CLM, who ...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-13-0180
更新日期:2014-06-01 00:00:00
abstract::Solid tumors are refractory to cellular immunotherapies in part because they contain suppressive immune effectors such as myeloid-derived suppressor cells (MDSCs) that inhibit cytotoxic lymphocytes. Strategies to reverse the suppressive tumor microenvironment (TME) should also attract and activate immune effectors wit...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-18-0572
更新日期:2019-03-01 00:00:00
abstract::Pancreatic cancer is the fourth leading cause of cancer-related deaths in the United States. Less than 6% of patients survive beyond the fifth year due to inadequate early diagnostics and ineffective treatment options. Our laboratory has developed an allogeneic, granulocyte-macrophage colony-stimulating factor (GM-CSF...
journal_title:Cancer immunology research
pub_type: 杂志文章
doi:10.1158/2326-6066.CIR-15-0200-T
更新日期:2016-03-01 00:00:00
abstract::In the past five decades, the role for lymphocytes in host immune response to tumors has been shown, at least in some patients, to be a critical component in disease prognosis. Also, the heterogeneity of lymphocytes has been documented, including the existence of regulatory T cells that suppress the immune response. A...
journal_title:Cancer immunology research
pub_type: 杂志文章,评审
doi:10.1158/2326-6066.CIR-15-0143
更新日期:2015-08-01 00:00:00