Acquired resistance of hepatocellular carcinoma (HCC) to sorafenib (SFB) is the main reason for the failure of SFB treatment of the cancer. Abnormal activation of the PI3K/AKT/mTOR pathway is important in the acquired resistance of SFB. Therefore, we investigated whether BEZ235 (BEZ) could reverse acquired sorafenib resistance by targeting the PI3K/mTOR pathway. A sorafenib-resistant HCC cell line Huh7 was established. MTT assay, clone formation assay, flow cytometry, and immunofluorescence were used to analyze the effects of BEZ235 alone or combined with sorafenib on cell proliferation, cell cycle, apoptosis, and autophagy of Huh7 and Huh7 cells. The antitumor effect was evaluated in animal models of Huh7 xenografts . Western blot was used to detect protein levels of the PI3K/AKT/mTOR pathway and related effector molecules. results showed that the Huh7 had a stronger proliferation ability and antiapoptosis effect than did Huh7, and sorafenib had no inhibitory effect on Huh7. SFB + BEZ inhibited the activation of the PI3K/AKT/mTOR pathway caused by sorafenib. Moreover, SFB + BEZ inhibited the proliferation and cloning ability, blocked the cell cycle in the G0/G1 phase, and promoted apoptosis in the two cell lines. The autophagy level in Huh7 cells was higher than in Huh7 cells, and BEZ or SFB + BEZ further promoted autophagy in the two cell lines. , SFB + BEZ inhibited tumor growth by inducing apoptosis and autophagy. We concluded that BEZ235 enhanced the sensitivity of sorafenib through suppressing the PI3K/AKT/mTOR pathway and inducing autophagy. These observations may provide the experimental basis for sorafenib combined with BEZ235 in trial treatment of HCC.
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http://dx.doi.org/10.1155/2021/5556306 | DOI Listing |
Cardiovasc Diabetol
January 2025
Department of Clinical Pharmacy, School of Preclinical Medicine and Clinical Pharmacy, China Pharmaceutical University, 24 Tong jia Lane, Nanjing, 210009, People's Republic of China.
Background: Inflammatory diseases impair the reparative properties of endothelial progenitor cells (EPC); however, the involvement of diabetes in EPC dysfunction associated with myocardial infarction (MI) remains unknown.
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Respir Res
January 2025
Department of Anesthesiology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, 210011, Jiangsu Province, China.
Background: Sepsis is a systemic inflammatory response caused by infection. When this inflammatory response spreads to the lungs, it can lead to acute lung injury (ALI) or more severe acute respiratory distress syndrome (ARDS). Pulmonary fibrosis is a potential complication of these conditions, and the early occurrence of pulmonary fibrosis is associated with a higher mortality rate.
View Article and Find Full Text PDFActa Biomater
January 2025
Clinical Center for Sports Medicine, Department of Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, P. R. China.. Electronic address:
Interface friction impedes tissue healing and stimulates interface cells to produce matrix metalloproteinases (MMPs); however, the precise mechanisms underlying matrix degradation, and the formation of fibrous scars remain unclear. This research involved the development of interface lubricating microspheres that inhibit the PI3K/AKT/mTOR signaling pathway in tenocytes. This inhibition significantly decreased MMP-13 expression and increased COL-1 production, thereby facilitating interface repair and regeneration.
View Article and Find Full Text PDFThyroid
January 2025
Head and Neck Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
The 2022 World Health Organization classification introduced the term high-grade follicular cell-derived nonanaplastic thyroid carcinoma (HGFCTC) to define invasive/infiltrative nonanaplastic thyroid carcinoma with high-grade features, including poorly differentiated thyroid carcinoma and high-grade differentiated thyroid carcinoma. Our objectives were to compare clinicopathological characteristics, oncologic outcomes, and mutation profiles among HGFCTC subgroups to better inform prognostication and treatment. In this single-center, retrospective cohort study of 252 patients who had surgery for HGFCTC from 1986 to 2020, we categorized HGFCTC and its related entity, "encapsulated noninvasive neoplasms of follicular cells with high-grade features," into five subgroups: (A) encapsulated noninvasive, (B) encapsulated with capsular invasion only (minimally invasive), (C) encapsulated angioinvasive with focal vascular invasion (VI), (D) encapsulated angioinvasive with extensive VI, and (E) infiltrative tumors.
View Article and Find Full Text PDFDiscov Oncol
January 2025
Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, People's Republic of China.
Monotherapy with anti-programmed cell death protein 1 (PD-1) monoclonal antibody has been approved for the treatment of advanced non-small cell lung cancer with positive programmed cell death-ligand 1 (PD-L1) expression and oncogene wild type, which revealed survival benefit compared with chemotherapy. Nevertheless, certain patients develop rapid progression on anti-PD-1 inhibitor monotherapy. This novel pattern is called hyperprogressive disease (HPD), and the underlying mechanism and molecular characteristics still leaves not clear.
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