Journal of cellular biochemistry最新文献

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Interaction of PGC7 and HP1BP3 Maintains Meg3-DMR Methylation by Regulating Chromatin Configuration PGC7和HP1BP3的相互作用通过调节染色质构型维持Meg3-DMR甲基化
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-18 DOI: 10.1002/jcb.30667
Yingxiang Liu, Weijie Hao, Chenyang Huang, Peiwen Feng, Hongliang Liu, Zekun Guo
{"title":"Interaction of PGC7 and HP1BP3 Maintains Meg3-DMR Methylation by Regulating Chromatin Configuration","authors":"Yingxiang Liu,&nbsp;Weijie Hao,&nbsp;Chenyang Huang,&nbsp;Peiwen Feng,&nbsp;Hongliang Liu,&nbsp;Zekun Guo","doi":"10.1002/jcb.30667","DOIUrl":"10.1002/jcb.30667","url":null,"abstract":"<div>\u0000 \u0000 <p>Genomic imprinting is essential for mammalian development. PGC7, an important maternal factor, binds to dimethylated histone H3K9 (H3K9me2), maintaining DNA methylation in zygotes and stem cells. However, the underlying molecular mechanisms of PGC7-maintained genomic imprinting in stem cells are not clear. Our previous study has identified that PGC7 interacts with HP1BP3, a novel member of the histone H1 family. In this study, we found that PGC7 interacts with the central globular domain of HP1BP3 through its C-terminal tail and that HP1BP3 is responsible for the recruitment of PGC7 at the Meg3 differentially methylated region (DMR) in the Dlk1–Dio3 imprinted domain. HP1BP3 or PGC7 depletion decreases enrichment in the Meg3-DMR, leading to DNA hypermethylation in this region. Moreover, the cooperative binding of PGC7 and HP1BP3 can antagonize the enrichment of DNMT3A in the Meg3-DMR, and the depletion of HP1BP3 or PGC7 separately induces chromosome decondensation in this region. In summary, this is the first study demonstrating that PGC7 and HP1BP3 synergistically maintain the methylation status of the Meg3-DMR by enabling a chromatin configuration that interferes with the binding of the de novo DNA methyltransferase DNMT3A.</p></div>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142466374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of Sodium-Dependent Vitamin C Transporter-2 and Ascorbate in Regulating the Hypoxic Pathway in Cultured Glioblastoma Cells 钠依赖性维生素 C 转运体-2 和抗坏血酸在调节培养胶质母细胞瘤细胞缺氧途径中的作用
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-09 DOI: 10.1002/jcb.30658
Eleanor R. Burgess, Citra Praditi, Elisabeth Phillips, Margreet C. M. Vissers, Bridget A. Robinson, Gabi U. Dachs, George A. R. Wiggins
{"title":"Role of Sodium-Dependent Vitamin C Transporter-2 and Ascorbate in Regulating the Hypoxic Pathway in Cultured Glioblastoma Cells","authors":"Eleanor R. Burgess,&nbsp;Citra Praditi,&nbsp;Elisabeth Phillips,&nbsp;Margreet C. M. Vissers,&nbsp;Bridget A. Robinson,&nbsp;Gabi U. Dachs,&nbsp;George A. R. Wiggins","doi":"10.1002/jcb.30658","DOIUrl":"10.1002/jcb.30658","url":null,"abstract":"<p>The most common and aggressive brain cancer, glioblastoma, is characterized by hypoxia and poor survival. The pro-tumour transcription factor, hypoxia-inducible factor (HIF), is regulated via HIF-hydroxylases that require ascorbate as cofactor. Decreased HIF-hydroxylase activity triggers the hypoxic pathway driving cancer progression. Tissue ascorbate accumulates via the sodium-dependent vitamin C transporter-2 (SVCT2). We hypothesize that glioblastoma cells rely on SVCT2 for ascorbate accumulation, and that knockout of this transporter would disrupt the regulation of the hypoxic pathway by ascorbate. Ascorbate uptake was measured in glioblastoma cell lines (U87MG, U251MG, T98G) by high-performance liquid chromatography. CRISPR/Cas9 was used to knockout SVCT2. Cells were treated with cobalt chloride, desferrioxamine or 5% oxygen, with/without ascorbate, and key hypoxic pathway proteins were measured using Western blot analysis. Ascorbate uptake was cell line dependent, ranging from 1.7 to 11.0 nmol/10<sup>6</sup> cells. SVCT2-knockout cells accumulated 90%–95% less intracellular ascorbate than parental cells. The hypoxic pathway was induced by all three stimuli, and ascorbate reduced this induction. In the SVCT2-knockout cells, ascorbate had limited effect on the hypoxic pathway. This study verifies that intracellular ascorbate is required to suppress the hypoxic pathway. As patient survival is related to an activated hypoxic pathway, increasing intra-tumoral ascorbate may be of clinical interest.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11729540/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RETRACTION: Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes 回归:成纤维细胞生长因子-2 通过 FGFR1-Ras-Raf-MEK1/2-ERK1/2 轴促进分解代谢,该轴与人关节软骨细胞中的 PKCδ 通路相协调。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-08 DOI: 10.1002/jcb.30665
{"title":"RETRACTION: Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes","authors":"","doi":"10.1002/jcb.30665","DOIUrl":"10.1002/jcb.30665","url":null,"abstract":"<p><b>RETRACTION</b>: D. Yan, D. Chen, and H.-J. Im, “Fibroblast Growth Factor-2 Promotes Catabolism via FGFR1-Ras-Raf-MEK1/2-ERK1/2 Axis That Coordinates With the PKCδ Pathway in Human Articular Chondrocytes,” <i>Journal of Cellular Biochemistry</i> 113, no. 9 (2012): 2856-2865, https://doi.org/10.1002/jcb.24160.</p><p>The above article, published online on 5 April 2012 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The retraction has occurred due to concerns related to the data presented in the article raised by the Office of Research Compliance at Rush University Medical Center following an investigation jointly conducted by Rush University and the Jesse Brown Veterans Affairs Medical Center (JBVAMC). Specifically, image elements of the experimental data in Figures 2, 4 A and 5 C were found to have been used by the same author(s) for publication elsewhere in a different scientific context. The corresponding author, Dr. Hee-Jeong Im Sampen, has been informed of the decision to retract but did not agree with it, as she is confident that any errors in the publication do not impact the reliability of the paper's findings. She also advised the editors that she stands ready to cooperate fully to make any necessary corrections. However, the article is retracted as the editors lost trust in the accuracy of the data and consider the conclusions invalid.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcb.30665","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RETRACTION: Propofol-Induced miR-219-5p Inhibits Growth and Invasion of Hepatocellular Carcinoma Through Suppression of GPC3-Mediated Wnt/β-Catenin Signalling Activation 回放:丙泊酚诱导的 miR-219-5p 通过抑制 GPC3 介导的 Wnt/β-Catenin 信号激活抑制肝细胞癌的生长和侵袭。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-08 DOI: 10.1002/jcb.30652
{"title":"RETRACTION: Propofol-Induced miR-219-5p Inhibits Growth and Invasion of Hepatocellular Carcinoma Through Suppression of GPC3-Mediated Wnt/β-Catenin Signalling Activation","authors":"","doi":"10.1002/jcb.30652","DOIUrl":"10.1002/jcb.30652","url":null,"abstract":"<p><b>RETRACTION:</b> T. Gong, X. Ning, Z. Deng, M. Liu, B. Zhou, X. Chen, S. Huang, Y. Xu, Z. Chen, and R. Luo, “Propofol-Induced miR-219-5p Inhibits Growth and Invasion of Hepatocellular Carcinoma Through Suppression of GPC3-Mediated Wnt/β-Catenin Signalling Activation,” <i>Journal of Cellular Biochemistry</i> 120, no. 10 (2019): 16934-16945, https://doi.org/10.1002/jcb.28952.</p><p>The above article, published online on 19 May 2019 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors; the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The retraction has been agreed due to concerns raised by third parties on the data presented in the article. Specifically, multiple areas of overlap were detected within and across Figures 1D, 2E and 2F. The authors acknowledged that unintentional mistakes were made during figure compilation and collaborated on the investigation into the detected issues. Even though they provided the raw data underlying the study, verification of the material's accuracy proved challenging due to the time elapsed since publication. As full accuracy of the provided material could no longer be ascertained, the editors have decided to retract the article, as they consider the identified issues to undermine the reliability of the presented research. The authors agree with the decision of retraction acknowledging that the identified issues may impact the overall interpretation of the research findings.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcb.30652","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RETRACTION: MiR-625-5p/PKM2 Negatively Regulates Melanoma Glycolysis State 返回:MiR-625-5p/PKM2 负向调节黑色素瘤的糖酵解状态。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-07 DOI: 10.1002/jcb.30651
{"title":"RETRACTION: MiR-625-5p/PKM2 Negatively Regulates Melanoma Glycolysis State","authors":"","doi":"10.1002/jcb.30651","DOIUrl":"10.1002/jcb.30651","url":null,"abstract":"<p><b>RETRACTION:</b> H. Zhang, C. Feng, M. Zhang, A. Zeng, L. Si, N. Yu, and M. Bai, “MiR-625-5p/PKM2 Negatively Regulates Melanoma Glycolysis State,” <i>Journal of Cellular Biochemistry</i> 120, no. 3 (2019): 2964–2972, https://doi.org/10.1002/jcb.26917.</p><p>The above article, published online on 30 November 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors; the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The authors requested a retraction of this manuscript stating that different cell lines were wrongly labelled and that the conclusions of this manuscript needed to be re-evaluated. Further investigation by the publisher revealed that the article mentions use of the non-verifiable/unknown normal skin cells HFE. Additional flaws and inconsistencies between results presented and experimental methods described were identified. Furthermore, the experimental methods were found to lack sufficient details or have unavailable supporting data, making the experiments not comprehensible nor reproducible to readers. Accordingly, the editors consider the conclusions of this article to be invalid.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcb.30651","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EXPRESSION OF CONCERN: Nrf2 Dependent Antiaging Effect of Milk-Derived Bioactive Peptide in Old Fibroblasts 表达关切:牛奶衍生生物活性肽对老年成纤维细胞的 Nrf2 依赖性抗衰老效应
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-07 DOI: 10.1002/jcb.30666
{"title":"EXPRESSION OF CONCERN: Nrf2 Dependent Antiaging Effect of Milk-Derived Bioactive Peptide in Old Fibroblasts","authors":"","doi":"10.1002/jcb.30666","DOIUrl":"10.1002/jcb.30666","url":null,"abstract":"<p><b>EXPRESSION OF CONCERN</b>: N. Kumar, S. Reddi, S. Devi, S. B. Mada, R. Kapila, and S. Kapila, “Nrf2 Dependent Antiaging Effect of Milk-derived Bioactive Peptide in Old Fibroblasts,” <i>Journal of Cellular Biochemistry</i> 120, no. 6 (2019): 9677-9691, https://doi.org/10.1002/jcb.28246.</p><p>This expression of concern is for the above article, published online on 28 December 2018 in Wiley Online Library (wileyonlinelibrary.com), and has been agreed between the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The expression of concern has been agreed upon due to concerns raised by a third party regarding the data presented in the article. Specifically, several panels in Figure 1B were found to originate from the same biological sample, yet were used to present different treatment groups. Furthermore, some of these panels had been previously published by the same author group in a different scientific context. As the identified issues do not undermine the study's conclusions, the editors have decided to issue this expression of concern to inform and alert readers.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 12","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcb.30666","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RETRACTION: Phytosomal-curcumin Antagonizes Cell Growth and Migration, Induced by Thrombin Through AMP-Kinase in Breast Cancer 回顾:植物姜黄素通过 AMP 激酶拮抗凝血酶诱导的乳腺癌细胞生长和迁移。
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-07 DOI: 10.1002/jcb.30656
{"title":"RETRACTION: Phytosomal-curcumin Antagonizes Cell Growth and Migration, Induced by Thrombin Through AMP-Kinase in Breast Cancer","authors":"","doi":"10.1002/jcb.30656","DOIUrl":"10.1002/jcb.30656","url":null,"abstract":"<p><b>RETRACTION</b>: M. Hashemzehi, R. Behnam-Rassouli, S. M. Hassanian, M. Moradi-Binabaj, R. Moradi-Marjaneh, F. Rahmani, H. Fiuji, M. Jamili, M. Mirahmadi, N. Boromand, M. Piran, M. Jafari, A. Sahebkar, A. Avan, and M. Khazaei, “Phytosomal-curcumin Antagonizes Cell Growth and Migration, Induced by Thrombin Through AMP-Kinase in Breast Cancer,” <i>Journal of Cellular Biochemistry</i> 119, no. 7 (2018): 5996–6007, https://doi.org/10.1002/jcb.26796.</p><p>The above article, published online on 30 March 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Christian Behl; and Wiley Periodicals LLC. The retraction has been agreed due to concerns raised by third parties on the data presented in the article. Specifically, possible duplication of Western Blot bands was identified within Figure 5. The raw data provided by the authors upon request did not address the concerns, as clear evidence of image manipulation and fabrication was detected. Consequently, the article is being retracted, as the editors have lost confidence in the integrity of the presented data and deem the conclusions invalid.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"125 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jcb.30656","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142390756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lnc-Pim1 Promotes Neurite Outgrowth and Regeneration of Neuron-Like Cells Following ACR-Induced Neuronal Injury Lnc-Pim1促进神经元样细胞在ACR诱导的神经元损伤后的生长和再生
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-06 DOI: 10.1002/jcb.30659
He Li, Ruo yu Jiang, Ya jie Tang, Cong Ling, Fang Liu, Jia jun Xu
{"title":"Lnc-Pim1 Promotes Neurite Outgrowth and Regeneration of Neuron-Like Cells Following ACR-Induced Neuronal Injury","authors":"He Li,&nbsp;Ruo yu Jiang,&nbsp;Ya jie Tang,&nbsp;Cong Ling,&nbsp;Fang Liu,&nbsp;Jia jun Xu","doi":"10.1002/jcb.30659","DOIUrl":"10.1002/jcb.30659","url":null,"abstract":"<div>\u0000 \u0000 <p>Decreased regenerative capacity of central nervous system neurons is the main cause for failure of damaged neuron regeneration and functional recovery. Long noncoding RNAs (lncRNAs) are abundant in mammalian transcriptomes, and many time- and tissue-specific lncRNAs are thought to be closely related to specific biological functions. The promoting effect of Pim-1 gene on neural differentiation and regeneration has been documented, but the effect and mechanism of its neighbor gene Lnc-Pim1 in regulating the response of central neurons to injury remain unclear. RT-PCR in this study demonstrated that the expression of Lnc-Pim1 was upregulated in acrylamide (ACR)-induced neuronal injury. FISH and nucleus-cytoplasmic assay demonstrated that Lnc-Pim1 was mainly expressed in the neuron cytoplasm, with a small amount in the nucleus. Western blot analysis proved that Lnc-Pim1 overexpression induced by the lentivirus vector could promote neurite outgrowth in Neuro-2a cells by activating the Erk1/2 signal pathway, and improve neurite regeneration of injured neurons by upregulating GAP-43 and β-Ⅲ tubulin protein expression. However, silencing Lnc-Pim1 expression by interfering RNA could effectively downregulate the GAP-43 and β-Ⅲ tubulin protein expression, and inhibit neurite growth of neurons. In addition, CHIRP-MS was performed to identify several potential targets of Lnc-Pim1 involved in the regulation of neurite regeneration of injured neurons. In conclusion, our study demonstrated that Lnc-Pim1 is a potential lnc-RNA, playing an important role in regulating central nerve regeneration.</p>\u0000 </div>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biochemical Properties of Synaptic Proteins Are Dependent on Tissue Preparation: NMDA Receptor Solubility Is Regulated by the C-Terminal Tail 突触蛋白的生化特性取决于组织制备:NMDA 受体溶解度受 C 端尾部调节
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-06 DOI: 10.1002/jcb.30664
Sehoon Won, Colin L. Sweeney, Katherine W. Roche
{"title":"Biochemical Properties of Synaptic Proteins Are Dependent on Tissue Preparation: NMDA Receptor Solubility Is Regulated by the C-Terminal Tail","authors":"Sehoon Won,&nbsp;Colin L. Sweeney,&nbsp;Katherine W. Roche","doi":"10.1002/jcb.30664","DOIUrl":"10.1002/jcb.30664","url":null,"abstract":"<p>Synaptic proteins are essential for neuronal development, synaptic transmission, and synaptic plasticity. The postsynaptic density (PSD) is a membrane-associated structure at excitatory synapses, which is composed of a huge protein complex. To understand the interactions and functions of PSD proteins, researchers have employed a variety of imaging and biochemical approaches including sophisticated mass spectrometry. However, the field is lacking a systematic comparison of different experimental conditions and how they might influence the study of the PSD interactome isolated from various tissue preparations. To evaluate the efficiency of several common solubilization conditions, we isolated receptors, scaffolding proteins, and adhesion molecules from brain tissue or primary cultured neurons or human forebrain neurons differentiated from induced pluripotent stem cells (iPSCs). We observed some striking differences in solubility. We found that N-methyl-<span>d</span>-aspartate receptors (NMDARs) and PSD-95 are relatively insoluble in brain tissue, cultured neurons, and human forebrain neurons compared to α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic receptors (AMPARs) or SAP102. In general, synaptic proteins were more soluble in primary neuronal cultures and human forebrain neurons compared to brain tissue. Interestingly, NMDARs are relatively insoluble in HEK293T cells suggesting that insolubility does not directly represent the synaptic fraction but rather it is related to a detergent-insoluble fraction such as lipid rafts. Surprisingly, truncation of the intracellular carboxyl-terminal tail (C-tail) of NMDAR subunits increased NMDAR solubility in HEK293T cells. Our findings show that detergent, pH, and temperature are important for protein preparations to study PSD protein complexes, and NMDAR solubility is regulated by its C-tail, thus providing a technical guide to study synaptic interactomes and subcellular localization of synaptic proteins.</p>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11730348/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142380937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
KDM4B Histone Demethylase Inhibition Attenuates Tumorigenicity of Malignant Melanoma Cells by Overriding the p53-Mediated Tumor Suppressor Pathway 抑制 KDM4B 组蛋白去甲基化酶可通过覆盖 p53 介导的抑瘤途径减轻恶性黑色素瘤细胞的致瘤性
IF 3 3区 生物学
Journal of cellular biochemistry Pub Date : 2024-10-02 DOI: 10.1002/jcb.30643
Arif Ul Hasan, Satoshi Serada, Sachiko Sato, Mami Obara, Sho Hirata, Yukako Nagase, Yukiko Kondo, Eiichi Taira
{"title":"KDM4B Histone Demethylase Inhibition Attenuates Tumorigenicity of Malignant Melanoma Cells by Overriding the p53-Mediated Tumor Suppressor Pathway","authors":"Arif Ul Hasan,&nbsp;Satoshi Serada,&nbsp;Sachiko Sato,&nbsp;Mami Obara,&nbsp;Sho Hirata,&nbsp;Yukako Nagase,&nbsp;Yukiko Kondo,&nbsp;Eiichi Taira","doi":"10.1002/jcb.30643","DOIUrl":"10.1002/jcb.30643","url":null,"abstract":"<div>\u0000 \u0000 <p>Despite significant advances in the treatment of cutaneous melanoma (hereafter melanoma), the prognosis remains less favorable due to therapeutic resistance, which is presumably linked to epigenetic dysregulation. We hypothesized that the histone lysine demethylase KDM4B could play a pivotal role in controlling therapy-resistant melanoma. To validate our hypothesis, we retrieved RNA sequencing data from the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) program and observed upregulation of <i>KDM4B</i> in both primary and metastatic melanoma, which was associated with poor survival. To explore its role, we used murine B16, human SK-MEL-5, and G-361 melanoma cells as in vitro models of melanoma. We found that KDM4B inhibition using NCGC00244536 increased global levels of H3K9me3 and downregulated the expressions of cell cycle progression–related genes <i>Cdk1</i>, <i>Cdk4</i>, <i>Ccnb1</i>, and <i>Ccnd1</i>. Moreover, genetic ablation of <i>KDM4B</i> or its chemical inhibition using NCGC00244536 reduced p53 production by upregulating MDM2, which enhances the proteolytic degradation of p53. Interestingly, despite the reduction of p53, these interventions augmented apoptosis and senescence-induced cell death by activating pathways downstream of p53, as evidenced by reduced levels of pro-survival Bcl-2 and Bcl-xL proteins and increased production of pro-apoptotic cleaved caspase-3, caspase-7, <i>Bax</i>, and the senescence inducer <i>Cdkn1a</i>. Compared to the FDA-approved anti-melanoma agent dacarbazine, NCGC00244536 exhibited more pronounced cytotoxic and antiproliferative effects in melanoma cells. Importantly, NCGC00244536 demonstrated minimal cytotoxicity to low <i>Kdm4b</i>-expressing mouse embryonic fibroblasts. In conclusion, our findings suggest that KDM4B inhibition can override the antitumor effect of p53, and potentially serve as a therapeutic strategy for melanoma.</p>\u0000 </div>","PeriodicalId":15219,"journal":{"name":"Journal of cellular biochemistry","volume":"126 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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