WENLI JIANG^1,#, JUNYI SHEN^1,#, XIAOQIANG DU^1,#, YAN QIU¹, JIAN ZHONG¹, ZHI OUYANG¹, BINGMEI M. FU², YE ZENG^1,*

BIOCELL, Vol.47, No.10, pp. 2255-2263, 2023, DOI:10.32604/biocell.2023.030880 - 08 November 2023

Abstract Background: Anisodine hydrobromide (AT3), an anti-cholinergic agent, could be delivered to the brain across the blood-brain barrier and has been used clinically for the treatment of cerebral ischemia/reperfusion injury. Endothelial dysfunction can be caused by hypoxia/reoxygenation (H/R) via oxidative stress and metabolic alterations. The present study investigated whether AT3 regulates the production of nitric oxide (NO) and reactive oxygen species (ROS), and the HIF-1α pathway via regulation of muscarinic acetylcholine receptors (mAChRs) in brain microvascular endothelial cells after H/R exposure. Methods: Under H/R conditions, hCMEC/D3 cerebral microvascular endothelial cells were treated with AT3. Specific inhibitors… More > Graphic Abstract

HONGYAN LI^1,#, CHUNLING LIAO^2,#, WENJUAN WENG², HONGZHEN ZHONG², TIANBIAO ZHOU^2,*

BIOCELL, Vol.44, No.2, pp. 257-262, 2020, DOI:10.32604/biocell.2020.08826 - 27 May 2020

Abstract In this study, we used a meta-analysis method to evaluate the relationship between hypoxia-inducible factor-1α (HIF1α) 1772C/T gene polymorphism (rs 11549465) and renal cell carcinoma (RCC)/prostate cancer risk. We searched for relevant studies (before March 1, 2019) on Cochrane Library, Embase, and PubMed. Studies meeting the inclusion criteria were recruited into this meta-analysis. The outcome of dichotomous data was showed in the way of odds ratios (OR), and 95% confidence intervals (CI) were also counted. In this investigation, there was no association between HIF1α 1772C/T gene polymorphism and susceptibility to RCC in Caucasians, Asians as More >

Yong Zhou, Chuandong Yang, Kunpeng Wang, Xuefeng Liu, Quan Liu

Oncology Research, Vol.25, No.3, pp. 397-405, 2017, DOI:10.3727/096504016X14743337535446

Abstract Recently, microRNA (miR)-33b has been demonstrated to act as a tumor suppressor in osteosarcoma. However, the regulatory mechanism of miR-33b in osteosarcoma cell proliferation and migration remains largely unknown. In this study, real-time PCR showed that miR-33b was significantly downregulated in osteosarcoma tissues compared to their matched adjacent nontumor tissues. Its expression was also decreased in several common osteosarcoma cell lines, including Saos-2, MG63, U2OS, and SW1353, when compared to normal osteoblast cell line hFOB. Overexpression of miR-33b suppressed U2OS cell proliferation and migration. HIF-1α was further identified as a target of miR-33b, and its… More >

Qun Zhao, Bi-Bo Tan, Yong Li, Li-Qiao Fan, Pei-Gang Yang, Yuan Tian

Oncology Research, Vol.23, No.3, pp. 129-136, 2015, DOI:10.3727/096504015X14500513118029

Abstract In this study, the effects of hypoxia-inducible factor-1α (HIF-1α) on gastric carcinoma (GC) drug resistance through apoptosis-related genes are investigated. First, HIF-1α-specific siRNA was synthetized and transfected into drug-resistant GC cell line OCUM-2MD3/L-OHP. Then MTT assay was applied to test the inhibition rate of GC cells by 5-fluorouracil (5-FU) and oxaliplatin (L-OHP). After that, flow cytometry (FCM) was applied to measure apoptosis rate. qPCR and Western blot assay were employed to detect HIF-1α and apoptosis-related genes. Results showed that HIF-1α in OCUM-2MD3/L-OHP cells was higher than that in OCUM-2MD3 and gastric epithelial cells. After HIF-1α-siRNA More >

Fei Liu^*1, Bihua Lin^*1, Xin Liu^*, Wenzhang Zhang^*, Erying Zhang^*, Liang Hu^*, Yuefan Ma^*, Xiangyong Li^*, Xudong Tang^*†

Oncology Research, Vol.23, No.3, pp. 109-118, 2015, DOI:10.3727/096504015X14496932933610

Abstract Extracellular signal-regulated kinase (ERK)1/2 signaling pathway plays a critical role in regulating tumor angiogenesis. Our previous studies have demonstrated that HPV-16 oncoproteins enhanced hypoxia-inducible factor-1α (HIF-1α) protein accumulation and vascular endothelial growth factor (VEGF) and interleukin-8 (IL-8) expression in non-small cell lung cancer (NSCLC) cells, thus contributing to angiogenesis. In this study, we further investigated the role of ERK1/2 signaling pathway in HPV-16 oncoprotein-induced HIF-1α, VEGF, and IL-8 expression and in vitro angiogenesis in NSCLC cells. Our results showed that HPV-16 E6 and HPV-16 E7 oncoproteins promoted the activation of ERK1/2 signaling pathway in A549 More >