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GAS5 can interact with miRNAs, such as miR‑21 and miR‑532‑5p, to regulate the expression of AKT signaling pathway, affecting cell survival and apoptosis. Collectively, the data indicate that GAS5 serves a key role in the miRNA, p53, mTOR, GRE, and AKT signaling pathways. GAS5 regulates complex intracellular signaling pathways primarily through three modes of action, all of which are interrelated Signal, decoy and guide. In the present article, latest developments in the association between GAS5 and a number of cellular signaling pathways are discussed to examine the tumor suppressive role of GAS5.Subsequently to the publication of this article, one of the corresponding authors, Dr Wei‑De Zhong, has realized that the information presented in the box for correspondence for him was incorrect. Although Dr Zhong is correctly shown as having three affiliation addresses in the paper, the address affiliation listed first on the paper should have been presented as the address for correspondence, not the second one. Therefore, the authors' affiliation information should have appeared as follows (changes are highlighted in bold) Correspondence to Dr Wei‑ De Zhong, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China. Dr Zhong deeply regrets his oversight in this regard, and apologizes for any inconvenience caused. [the original article was published in Oncology Reports 42 991-1004, 2019; DOI 10.3892/or.2019.7231].Thrombotic complications and hypercoagulopathies are commonly associated with the progression of pancreatic ductal adenocarcinoma (PDAC). Although the mechanistic link between the two phenomena is uncertain, there is evidently an increase in procoagulant proteins and a decrease in anticoagulants in PDAC patients. For example, the anticoagulant protein S (PS) is decreased during the progression of PDAC, a condition that possibly contributes to the hypercoagulopathies. PS is also an important signaling molecule that binds a family of tyrosine kinase receptors known as TAM (Tyro3, Axl and Mer) receptors; TAM receptors are often upregulated in different cancers. Growth Arrest Specific 6 or GAS6 protein, a homolog of PS, is also a TAM receptor family ligand. The downstream signaling pathways triggered by this ligand‑receptor interaction perform diverse functions, such as cell survival, proliferation, efferocytosis, and apoptosis. Targeting the TAM receptors to treat cancer has had limited success; side effects are a significant obstacle due to the widespread numerous functions of TAM receptors. In the present study, it was revealed that PS‑TAM interaction was pro‑apoptotic, whereas GAS6‑mediated TAM signaling promoted proliferation and survival in select PDAC cell lines. Furthermore, by regulating the balance between these two signaling pathways (by overexpressing PS or knocking down GAS6), the proliferative potential of the cells was decreased. Both long‑term and short‑term effects of natural PS overexpression were comparable to the treatment of the cells with the drug UNC2025, which inhibits the Mer‑receptor. The present study lays the foundation for investigation of PS as a therapeutic agent to control cancer progression and to concurrently arrest thrombotic events.Cardiac dysfunction is a significant manifestation of sepsis and it is associated with the prognosis of the disease. Astaxanthin (ATX) has been discovered to serve a variety of pharmacological effects, including anti‑inflammatory, antioxidant and antiapoptotic properties. The present study aimed to investigate the role and mechanisms of ATX in sepsis‑induced myocardial injury. Male C57BL/6 mice were divided into three groups (15 mice per group) Control group, lipopolysaccharide (LPS) group and LPS + ATX group. The cardiac dysfunction model was induced through an intraperitoneal injection of LPS (10 mg/kg) and ATX (40 mg/kg) was administered to the LPS + ATX group by intraperitoneal injection 30 min following the administration of LPS. All animals were sacrificed after 24 h. Inflammatory cytokine levels in the serum were detected using ELISAs, and cardiac B‑type natriuretic peptide (BNP) levels were analyzed using western blot analysis and reverse transcription‑quantitative PCR. Furthermore, the extent of myocardial injury was evaluated using pathological analysis, and cardiomyocyte apoptosis was analyzed using a TUNEL assay, in addition to determining the expression levels of Bcl‑2 and Bax. https://www.selleckchem.com/products/tasquinimod.html The expression levels of proteins involved in the mitogen activated protein kinase (MAPK) and PI3K/AKT signaling pathways were also analyzed using western blot analysis. ATX significantly suppressed the LPS‑induced increased production of TNF‑α and IL‑6 and suppressed the protein expression levels of BNP, Bax and Bcl‑2 to normal levels. ATX also prevented the histopathological changes to the myocardial tissue and reduced the extent of necrosis. Furthermore, the treatment with ATX suppressed the LPS‑activated MAPK and PI3K/AKT signaling. ATX additionally exerted a protective effect on cardiac dysfunction caused by sepsis by inhibiting MAPK and PI3K/AKT signaling.RAD52 (Radiation sensitive 52) is a key factor in DNA damage repair (DDR) bypass, which participates in single‑strand annealing (SSA) after DNA damage end excision, while breast cancer type 1 susceptibility protein (BRCA1)/breast cancer type 2 susceptibility protein (BRCA2) play critical roles in homologous recombination (HR) repair. The present study aimed to determine whether RAD52‑induced regulation of repair bypass occurs in acute myeloid leukemia (AML) cells and to explore the underlying mechanism. Herein, we applied an RAD52 aptamer to AML cells with downregulated BRCA1/2. RAD52 aptamer inhibited AML cell proliferation detected by cell counting, promoted cell apoptosis obtained by flow cytometry, and suppressed DNA damage repair behavior measured by comet assay and flow cytometry, after drug intervention during low expression of BRCA1/2. During this process, DDR‑related cell cycle checkpoint proteins were activated, and the cells were continuously arrested in the S/G2 phase, which affected the cell damage repair process.
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