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Wang N, Wang J, Meng X, Li T, Wang S, Bao Y. The Pharmacological Effects of Spatholobi Caulis Tannin in Cervical Cancer and Its Precise Therapeutic Effect on Related circRNA. Mol Ther Oncolytics 2019; 14:121-129. [PMID: 31194163 PMCID: PMC6551555 DOI: 10.1016/j.omto.2019.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 04/30/2019] [Indexed: 12/12/2022] Open
Abstract
The chemical components of Spatholobi Caulis tannin (SCT) have a modest therapeutic effect in patients with cervical cancer. However, the active components and the mechanism of action of SCT in HeLa cervical cancer cells need to be further studied. In this paper, 3D microfluidic chip technology was applied to simulate the effects of tannins in the human body, and the appropriate dose and time of administration were calculated. The cell cycle and apoptosis experiments demonstrated that SCT inhibits proliferation and stimulated apoptosis in HeLa cells. The differentially expressed genes were screened using The Cancer Genome Atlas (TCGA) and the GEO databases to identify common differentially expressed genes. A bioinformatic analysis of relevant genes, analysis using the molecular docking technique, and survival analysis were used to predict the target genes of SCT. Circular RNAs (circRNAs) associated with the SCT target genes and the regulatory effects of SCT on these circRNAs were determined. These studies showed that SCT mediates related circRNAs in HeLa cells to inhibit proliferation and promote apoptosis in HeLa cells. Thus, SCT may be an effective strategy for treating cervical cancer.
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Affiliation(s)
- Nijia Wang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, P.R. China
| | - Jiayi Wang
- Liaoning Institute for Drug Control, Shenyang 110036, P.R. China
| | - Xiansheng Meng
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, P.R. China
- Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, P.R. China
- Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, P.R. China
- Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-omics Research Collaboration Laboratory, Dalian 116600, P.R. China
| | - Tianjiao Li
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, P.R. China
- Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, P.R. China
- Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, P.R. China
- Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-omics Research Collaboration Laboratory, Dalian 116600, P.R. China
| | - Shuai Wang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, P.R. China
- Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, P.R. China
- Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, P.R. China
- Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-omics Research Collaboration Laboratory, Dalian 116600, P.R. China
| | - Yongrui Bao
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, P.R. China
- Component Medicine Engineering Research Center of Liaoning Province, Dalian 116600, P.R. China
- Liaoning Province Modern Chinese Medicine Research Engineering Laboratory, Dalian 116600, P.R. China
- Liaoning University of Traditional Chinese Medicine-Agilent Technologies Modern TCM and Multi-omics Research Collaboration Laboratory, Dalian 116600, P.R. China
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Two-boundary first exit time of Gauss-Markov processes for stochastic modeling of acto-myosin dynamics. J Math Biol 2016; 74:1511-1531. [PMID: 27671484 DOI: 10.1007/s00285-016-1061-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 09/14/2016] [Indexed: 10/20/2022]
Abstract
We consider a stochastic differential equation in a strip, with coefficients suitably chosen to describe the acto-myosin interaction subject to time-varying forces. By simulating trajectories of the stochastic dynamics via an Euler discretization-based algorithm, we fit experimental data and determine the values of involved parameters. The steps of the myosin are represented by the exit events from the strip. Motivated by these results, we propose a specific stochastic model based on the corresponding time-inhomogeneous Gauss-Markov and diffusion process evolving between two absorbing boundaries. We specify the mean and covariance functions of the stochastic modeling process taking into account time-dependent forces including the effect of an external load. We accurately determine the probability density function (pdf) of the first exit time (FET) from the strip by solving a system of two non singular second-type Volterra integral equations via a numerical quadrature. We provide numerical estimations of the mean of FET as approximations of the dwell-time of the proteins dynamics. The percentage of backward steps is given in agreement to experimental data. Numerical and simulation results are compared and discussed.
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Wang R, Yang Q, Xiao W, Si R, Sun F, Pan Q. Cellular retinoic acid binding protein 2 inhibits osteogenic differentiation by modulating LIMK1 in C2C12 cells. Dev Growth Differ 2015; 57:581-9. [PMID: 26449203 DOI: 10.1111/dgd.12240] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/28/2015] [Accepted: 08/28/2015] [Indexed: 12/12/2022]
Abstract
Cellular retinoic acid binding protein 2 (CRABP2) is essential for myoblast differentiation, however, little is known about its role in osteogenic differentiation. This study mainly aims to explore the biological functions and the underlying molecular mechanisms of CRABP2 in osteogenesis. Using quantitative polymerase chain reaction and western blot assays, we found that the expression of CRABP2 at both mRNA and protein levels were downregulated during osteogenesis. Furthermore, CRABP2 knockdown displayed significant changes in the cell phenotype and the actin filaments (F-actin) polymerization in C2C12 cells treated with BMP2. Moreover, the western blotting of osteogenic differentiation biomarkers, alkaline phosphatase (ALP) staining and Alizarin red staining showed that CRABP2 dramatically inhibited osteogenic differentiation. The following investigation of molecular mechanisms implicated that CARBP2 specifically interacted with LIMK1, a key factor in acin cytoskeletal rearrangements in osteogenesis, to interrupt its activity and stability in an ubiquitin-proteasome pathway to prevent C2C12 cells from osteogenic differentiation in response to BMP2. Above all, our data suggest a novel function of CRABP2 in regulating actin remodeling and osteogenic differentiation via LIMK1, thus presenting a possible molecular target for promoting the osteogenic differentiation in bone degenerative diseases.
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Affiliation(s)
- Rui Wang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
| | - Qingyuan Yang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
| | - Weifan Xiao
- Department of Central Laboratory, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
| | - Ruirui Si
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
| | - Fenyong Sun
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
| | - Qiuhui Pan
- Department of Central Laboratory, Shanghai Tenth People's Hospital of Tongji University, Shanghai, 200072, China
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Masuda T. Molecular dynamics simulation for the reversed power stroke motion of a myosin subfragment-1. Biosystems 2015; 132-133:1-5. [DOI: 10.1016/j.biosystems.2015.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 04/07/2015] [Accepted: 04/08/2015] [Indexed: 11/27/2022]
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