Background/aims: Colorectal carcinoma is one of the most common cancers world-wide, with high morbidity and mortality rates. Arginine ADP-ribosyltransferase 1(ART1) is an important ecto-ADP-ribose transferase and has been proven to be intimately involved in a number of biological processes. However, the influence of ART1 on survival and apoptosis of colorectal carcinoma cells and the potential mechanism of action of ART1 remain uncharacterized.
Methods: ART1 was silenced via lentiviral vector-mediated short hairpin RNA (shRNA) in CT26 colon carcinoma cells, and cisplatin (CDDP) was applied to induce apoptosis. Survival and apoptosis rate of CT26 cells was assessed by CCK8 assay, flow cytometry and Hoechst 33342 staining. Expression and activity of signaling proteins were detected by Western blot.
Results: ART1 knockdown enhanced the inhibition of cell survival and increased the apoptosis induced by CDDP. Furthermore, the reduced survival rate correlated with reduced levels of phos-Akt(Thr308) and phos-IκBα and reduced NF-κB p65 nuclear translocation. A decline in Bcl-2 and Bcl-xl expression and an increase in Bax expression may explain the enhanced apoptosis.
Conclusion: This study provides a molecular mechanism for the function of ART1 in colorectal carcinoma and defines a potential therapeutic target for the enhanced treatment of this prominent world-wide disease.
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http://dx.doi.org/10.1159/000356595 | DOI Listing |
Front Immunol
January 2025
Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA, United States.
Background: Microsatellite instability-high (MSI-high) tumors comprise ~15% of sporadic colorectal cancers (CRC) and are associated with elevated T cell infiltration. However, the universality of this response across T cell subtypes with distinct functions is unknown.
Methods: Including 1,236 CRC tumors from three observational studies, we conducted T cell profiling using a customized 9-plex (CD3, CD4, CD8, CD45RA, CD45RO, FOXP3, KRT, MKI67, and DAPI) multispectral immunofluorescence assay.
Front Immunol
January 2025
Department of Pharmacy, Jinan Fourth People's Hospital, Jinan, China.
Colorectal cancer (CRC), as one of the malignant tumors with the highest incidence and mortality rates worldwide in recent years, originating primarily from the mucosal tissues of the colon or rectum, and has the potential to rapidly develop into invasive cancer. Its pathogenesis is complex, involving a multitude of factors including genetic background, lifestyle, and dietary habits. Early detection and treatment are key to improving survival rates for patients with CRC.
View Article and Find Full Text PDFImmunotargets Ther
December 2024
Department of Thoracic Surgery, Nanjing Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, People's Republic of China.
In recent years, the combination of immune checkpoint inhibitors (ICIs) with antiangiogenic agents has led to significant breakthroughs in cancer treatment. Such as programmed cell death 1 (PD-1), programmed cell death ligand 1 (PD-L1), and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4). Antiangiogenic therapy plays a pivotal role in normalizing blood vessels and remodeling the tumor immune microenvironment while ICIs not only enhance the host's antitumor immune response by blocking negative regulatory signals but also promote vascular normalization.
View Article and Find Full Text PDFColorectal Dis
January 2025
Department of Faculty Surgery No. 2, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
Aim: Natural orifice specimen extraction surgery (NOSES) has gained significant importance in treating cancers. The current study is a meta-analysis that aimed to assess the short-term efficacy and long-term prognostic impact of NOSES and conventional laparoscopic (CL) surgery in the treatment of colorectal cancer (CRC).
Method: Published reports in several medical databases up to February 2024 were searched and information pertinent to outcomes of NOSES and CL in retrospective and randomized studies to treat CRC was collected.
Colorectal Dis
January 2025
Department of Surgery, Yokohama City University, Yokohama, Kanagawa, Japan.
Aim: The risk of lymph node metastasis after endoscopic resection of high-risk T1 colorectal cancer prompts additional resection. However, age and comorbidities are considered in decision-making and some surgeons opt for observation. We compared the long-term outcomes of these approaches with the aim of clarifying the need for additional resection.
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