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Recapitulating the potential contribution of protein S-palmitoylation in cancer.
Cancer Metastasis Rev
December 2024
Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Khandwa Road, 453552, Simrol, Madhya Pradesh, India.
Protein S-palmitoylation is a reversible form of protein lipidation in which the formation of a thioester bond occurs between a cysteine (Cys) residue of a protein and a 16-carbon fatty acid chain. This modification is catalyzed by a family of palmitoyl acyl transferases, the DHHC enzymes, so called because of their Asp-His-His-Cys (DHHC) catalytic motif. Deregulation of DHHC enzymes has been linked to various diseases, including cancer and infections.
View Article and Find Full Text PDFSquamous cell carcinomas (SCC) are often preceded by potentially malignant precursor lesions, most of which remain benign. The terminal exhaustion phenotypes of effector T-cells and the accumulation of myeloid-derived suppressor cells (MDSC) have been thoroughly characterized in established SCC. However, it is unclear what precancerous lesions harbor a bona fide high risk for malignant transformation and how precancerous epithelial dysplasia drives the immune system to the point of no return.
View Article and Find Full Text PDFGABAR-PPT1 palmitoylation homeostasis controls synaptic transmission and circuitry oscillation.
Transl Psychiatry
December 2024
The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, He'nan, China.
The infantile neuronal ceroid lipofuscinosis, also called CLN1 disease, is a fatal neurodegenerative disease caused by mutations in the CLN1 gene encoding palmitoyl protein thioesterase 1 (PPT1). Identifying the depalmitoylation substrates of PPT1 is crucial for understanding CLN1 disease. In this study, we found that GABAR, the critical synaptic protein essential for inhibitory neurotransmission, is a substrate of PPT1.
View Article and Find Full Text PDFDietary Palmitic Acid Drives a Palmitoyltransferase ZDHHC15-YAP Feedback Loop Promoting Tumor Metastasis.
Adv Sci (Weinh)
December 2024
Institute of Cancer Stem Cell, Dalian Medical University Cancer Center, Dalian, 116044, China.
Elevated uptake of saturated fatty acid palmitic acid (PA) is associated with tumor metastasis; however, the precise mechanisms remain partially understood, hindering the development of therapy for PA-driven tumor metastasis. The Hippo-Yes-associated protein (Hippo/YAP) pathway is implicated in cancer progression. Here it is shown that a high-palm oil diet potentiates tumor metastasis in murine xenografts in part through YAP.
View Article and Find Full Text PDFUnlabelled: Many immunotherapies impact T cell function by impacting the immune synapse. While immunotherapy is extremely successful in some patients, in many others, it fails to help or causes complications, including immune-related adverse events. Phosphoprotein Associated with Glycosphingolipid Rich Microdomains 1 (PAG) is a transmembrane scaffold protein with importance in T cell signaling.
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