Propionate promotes CD8+ T-cell infiltration and enhances immunotherapy efficacy in colorectal cancer

Background
Short-chain fatty acids (SCFAs) produced by the gut microbiota are increasingly recognized as regulators of host immunity, yet the role of individual SCFAs in shaping the tumor immune microenvironment in colorectal cancer (CRC) remains poor…

IL-2/CD25 acts within the tumor microenvironment to reprogram tumor-specific cytotoxic CD8+ T cells while restraining regulatory T-cell accumulation

Background
Targeting the high-affinity interleukin-2 receptor (IL-2R) on CD8+ T effector cells elicits potent antitumor responses that are augmented when co-administered with programmed cell death protein 1 (PD-1) blockade.

Methods
Using the mouse IL…

Screening of known gut microbiome-derived metabolites in anti-tumor immunity of colorectal cancer

Background
Most colorectal cancers (CRCs) patients with microsatellite stability (MSS) have minimal benefit from immune checkpoint inhibitor monotherapy, and even after PD-1/PD-L1 blockade, T cell function remains inadequately restored, highlighting t…

Temporal dynamics of the immune response to neoadjuvant androgen deprivation therapy suggest a window of opportunity for checkpoint inhibitor therapy in prostate cancer

Background
Novel therapies to prevent lethal castration-resistant prostate cancer in response to standard-of-care androgen deprivation therapy (ADT) are required. Unfortunately, most prostate cancers are “immune cold” and fail to respond to checkpoint…

NKG2A-HLA-E axis contributes to an immunosuppressive checkpoint network in hepatocellular carcinoma

Background
The immunosuppressive tumor microenvironment in hepatocellular carcinoma (HCC) limits the efficacy of current immunotherapies. The interplay between the emerging inhibitory receptor NKG2A and its activating counterpart NKG2C, both binding H…

Frailty of older patients is not reflected in the melanoma tumor microenvironment and treatment response to immune checkpoint blockade therapy

Older adults with frailty demonstrate systemic immunosenescence, including T-cell exhaustion and reduced immune diversity, yet maintain immune checkpoint blockade (ICB) efficacy comparable to that of younger patients. Baseline immune cell composition …

IgM promotes antitumor immunity to a Tn-expressing solid tumor

Background
Altered O-glycosylation is a hallmark of many adenocarcinomas and is often characterized by expression of the Tn antigen. However, the role of B cells in protection against Tn-expressing solid tumors remains poorly understood.

Methods
We g…

LRIG2 suppresses NK cell-induced GSDME-mediated pyroptosis via the LAMP1-STAT3 pathway in glioma

Background
Gliomas are resistant to current therapies, and natural killer (NK) cell-based immunotherapy shows limited efficacy. Gasdermin E (GSDME)-mediated pyroptosis contributes to NK-induced tumor killing, but NK cell dysfunction in the glioma micr…

Epigenetic plus cytokine therapy induces stem-like CD8+ T-cell reservoirs and intratumoral immune niches to overcome anti-PD-1 resistance

Background
Checkpoint blockade (CPB) has limited efficacy in patients with colorectal cancer (CRC), warranting improved therapeutic strategies capable of remodeling the tumor microenvironment. Stem-like TCF1+CD8+ T cells, cytotoxic CD8+ T cells, and l…

PLP1-triggered NOT gate to address neurotoxicity risk of PSMA-targeted prostate cancer therapy

Background
On-target, off-tumor toxicity is a recurring challenge for solid tumor therapeutics targeted to antigens preferentially expressed on malignant cells. Prostate-specific membrane antigen (PSMA) is a tumor-associated antigen that is expressed …

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