Publications by authors named "Meirong Zheng"

Clinical trials of chimeric antigen receptors (CARs) targeting CD19 have produced impressive results in hematological malignancies, including diffuse large B-cell lymphoma (DLBCL). However, a notable number of patients with DLBCL fail to achieve remission after CD19 CAR T-cell therapy and may therefore require a dual targeted CAR T-cell therapy. A 31-year-old man with refractory DLBCL was assessed in the present case report.

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Stanniocalcin-2 (STC2) is a glycoprotein that has been found to play key roles in the regulation of cancer, diabetes mellitus, and osteogenesis. Herein we sought to extend these past studies by examining the importance of STC2 in the context of human mesenchymal stem cell (hMSC) adipogenic differentiation and exploring the mechanisms underlying such importance. We found that STC2 expression was significantly reduced on day 7 of hMSC adipogenesis.

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Objective: Osteogenesis is a multiple-step process through which osteoblasts are derived from bone marrow mesenchymal stem cells (MSCs) with multilineage differentiation potential. This study aimed to analyze gene expression profiling during osteogenic differentiation of MSCs.

Materials And Methods: Human MSCs were isolated and induced for differentiation in osteogenic medium.

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The E26 transformation-specific (ETS) family of transcription factors plays an important role in osteogenic differentiation. Whether GA-binding protein β2 (GABPβ2), a member of the ETS family, is involved in osteogenic differentiation has not been previously reported. In the present study, directed differentiation of human osteoblast-like Saos-2 cells was induced and validated by examining alkaline phosphatase (ALP) activity, presence of mineralized nodule and other phenotypic characteristics of the cells on days 0, 3, 6 and 9, thus establishing their osteogenic potential.

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Article Synopsis
  • Insulin administration during reperfusion has cardioprotective effects, potentially by acting on the sphingosine kinase/sphingosine 1-phosphate (S1P) pathway in cardiomyocytes.
  • In experiments with rat cardiomyocytes, insulin increased sphingosine kinase activity, changed its location within cells, and raised S1P levels, which are needed to prevent cell death.
  • The findings suggest that insulin reduces apoptosis due to hypoxia/reoxygenation injury by activating the S1P receptor, highlighting a novel protective mechanism for heart cells.
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Background: Supramolecular micelles as drug-delivery vehicles are generally unable to enter the nucleus of nondividing cells. In the work reported here, nuclear localization signal (NLS)-modified polymeric micelles were studied with the aim of improving nuclear drug delivery.

Methods: In this research, cholesterol-modified glycol chitosan (CHGC) was synthesized.

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To comparatively investigate ultrastructural characteristics and expressions of AFP (alpha-fetoprotein) and Tn (Thomsen-Friedenreich-related antigen) protein in AFP negative (AFP-) and AFP positive (AFP+) primary hepatocellular carcinoma. Fourty-three cases of AFP- and AFP+ hepatocellular carcinoma (HCC) tissues and five cases of normal liver tissues were divided into three groups: control group (normal liver tissue, n=5); AFP+ HCC group (the serum AFP level was higher than 10 ng/ml, n = 22); AFP- HCC group (the serum AFP level was lower than 10 ng/ml, n=21). The ultrastructural morphology was studied by transmission electron microscopy, the expressions of AFP and Tn protein were detected by immunohistochemistry and cell image analysis.

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