Colorectal cancer (CRC) affects millions of people worldwide. Chemoresistance seriously impairs the therapeutic effects. Lipid droplets (LDs) abnormally accumulate in CRC supported chemoresistance. Exploring the mechanism of LD-induced chemoresistance is extremely important for improving prognosis of CRC patients. The expression of PTMA was increased in both CRC tissues and cells, which was positively correlated with LD production. PTMA facilitated chemoresistance to gemcitabine by inducing LD production in CRC cells. PTMA enhanced LD biogenesis and chemoresistance to gemcitabine by promoting SREBP-1-mediated lipogenesis and STAT3 activation in CRC.
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http://dx.doi.org/10.1016/j.mito.2021.04.001 | DOI Listing |
Cell Death Dis
December 2024
Department of Hepatobiliary Pancreatic Surgery, South China Hospital, Medical School, Shenzhen University, Shenzhen, 518116, P. R. China.
Pancreatic cancer (PC) is one of the most lethal malignant tumors that lacks effective treatment, and gemcitabine-based chemoresistance occurs frequently. Therefore, new therapeutic strategies for PC are urgently needed. Tripartite motif containing 59 (TRIM59) plays an important role in breast and lung cancer chemoresistance.
View Article and Find Full Text PDFJ Biochem Mol Toxicol
January 2025
Department of Pharmacy, Chongqing University Cancer Hospital, Chongqing, China.
Although gemcitabine (GEM) is the cornerstone of the treatment of pancreatic cancer (PC), GEM resistance frequently arises. Circular RNA (circRNA) circ_0075829 is highly expressed in PC. However, whether circ_0075829 contributes to GEM resistance of PC is largely unknown.
View Article and Find Full Text PDFJ Clin Med
November 2024
Research Institute of Molecular and Cellular Medicine, Peoples' Friendship University of Russia (RUDN University), 115093 Moscow, Russia.
Undifferentiated pleomorphic sarcoma (UPS) is a highly malignant mesenchymal tumor that ranks as one of the most common types of soft tissue sarcoma. Even though chemotherapy increases the 5-year survival rate in UPS, high tumor heterogeneity frequently leads to chemotherapy resistance and consequently to recurrences. In this study, we characterized the cell composition and the transcriptional profile of UPS with resistance to chemotherapy at the single cell resolution.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Clinical Gene Therapy, Graduate School of Medicine, Osaka University, Suita 565-0871, Japan.
Pancreatic ductal adenocarcinoma (PDAC) characterized by an abundant cancer stroma is an aggressive malignancy with a poor prognosis. Periostin (Pn) is a key extracellular matrix (ECM) protein in various tumor progression. Previously, we described the role of Pn alternative splicing variants (ASVs) with specific functional features in breast cancer.
View Article and Find Full Text PDFCancers (Basel)
December 2024
Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63130, USA.
Pancreatic ductal adenocarcinoma (PDAC) stands as one of the most lethal cancers, marked by rapid progression, pronounced chemoresistance, and a complex network of genetic and epigenetic dysregulation. Within this challenging context, sirtuins, NAD-dependent deacetylases, have emerged as pivotal modulators of key cellular processes that drive pancreatic cancer progression. Each sirtuin contributes uniquely to PDAC pathogenesis.
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