Oncolytic virus OH2 induces PD-L1 upregulation via NF-{kappa}B signaling and synergizes with anti-PD-L1 therapy in prostate cancer through a targeted extracellular vesicle delivery system

Background
Prostate cancer (PCa) is a prevalent malignancy with limited treatment options for advanced stages. Oncolytic virotherapy represents a promising immunotherapeutic approach, but its efficacy and underlying mechanisms in PCa, particularly con…

Optimizing anti-PI3K{delta} and anti-LAG-3 immunotherapy dosing regimens in a mouse model of triple-negative breast cancer improves outcome by removing treatment-related adverse events

Background
Current immunotherapy regimens most often fail due to an insufficient T cell response and/or immune-related adverse events (irAEs) which lead to treatment discontinuation. Additionally, many cancers likely require combination immunotherapie…

Partitioned overall survival: comprehensive analysis of survival states over 4 years in CheckMate 9ER comparing first-line nivolumab plus cabozantinib versus sunitinib in advanced renal cell carcinoma

Background
Immune checkpoint inhibitor (ICI)-based regimens can be associated with prolonged survival and disease control after treatment discontinuation without further anticancer therapy. An integrated, comprehensive partitioned survival analysis de…

Single-cell spatial transcriptomics uncovers niches that govern response to PD-1/PD-L1 blockade in cutaneous squamous cell carcinoma

Background
Neoadjuvant PD-1/PD-L1 blockade yields robust efficacy in advanced cutaneous squamous cell carcinoma (cSCC), yet many patients fail to achieve a complete or major pathologic response. The reasons why some patients experience response but ot…

Targeting PKMYT1 enhances antitumor immune responses to PD-L1 blockade in castration-resistant prostate cancer

Background
Although immunotherapy has revolutionized cancer treatment, its efficacy in castration-resistant prostate cancer (CRPC) remains limited, largely due to an immunologically “cold” tumor microenvironment with scarce T-cell infiltration. Unrave…

Clinical and translational results from a phase 1 trial of gemcitabine/nab-paclitaxel with nivolumab/ipilimumab or hydroxychloroquine/ipilimumab in untreated metastatic pancreatic adenocarcinoma

Background
Patients with metastatic pancreatic ductal adenocarcinoma (mPDAC) often respond to cytotoxic therapy, but early disease progression is typical. Responses to immunotherapy alone are rare. Recent advances in chemoimmunotherapy combinations of…

Advancing ICOS agonism in solid tumors: lessons from INDUCE-1

The inducible T-cell co-stimulator (ICOS, CD278) represents an appealing yet complex target within the CD28 immunoglobulin receptor superfamily. Unlike constitutively expressed co-stimulatory molecules, ICOS is minimally present on naïve T cel…

Preventing surgery-induced natural killer cell suppression and metastases by inhibiting PI3K-gamma signaling in myeloid-derived suppressor cells

Background
Myeloid-derived suppressor cells (MDSCs) have a dominating presence in the postoperative period, mediating the suppression of natural killer (NK) cells and promoting cancer metastases after surgery. However, their phenotype and effects on p…

Oncolytic peptide LTX-315 targets PD-L1 to improve antitumor immune response of nanosecond pulse electric field in liver cancer

Background
Nanosecond pulsed electric field (nsPEF) ablation has demonstrated limited and transient efficacy in suppressing tumor progression. Oncolytic peptide LTX-315 is known to elicit a strong antitumor immune response and durable immune memory. T…

MMP3 overexpression enhances CAR-T cell infiltration and antitumor activity in a CAF-enriched solid tumor model

Background
Chimeric antigen receptor (CAR) T cell therapy has shown remarkable success in hematologic malignancies but faces substantial challenges in solid tumors. One of the main obstacles is the extracellular matrix (ECM), which serves as the physi…

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