Biochimica et biophysica acta. General subjects最新文献

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Targeting SMYD2 promotes ferroptosis and impacts the progression of pancreatic cancer through the c-Myc/NCOA4 axis-mediated ferritinophagy 靶向 SMYD2 可通过 c-Myc/NCOA4 轴介导的噬铁蛋白作用促进铁蛋白沉积并影响胰腺癌的进展。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-31 DOI: 10.1016/j.bbagen.2024.130683
{"title":"Targeting SMYD2 promotes ferroptosis and impacts the progression of pancreatic cancer through the c-Myc/NCOA4 axis-mediated ferritinophagy","authors":"","doi":"10.1016/j.bbagen.2024.130683","DOIUrl":"10.1016/j.bbagen.2024.130683","url":null,"abstract":"<div><h3>Background</h3><p>Pancreatic cancer (PC) is characterized by a poor prognosis and limited treatment options. Ferroptosis plays an important role in cancer, SET and MYND domain-containing protein 2 (SMYD2) is widely expressed in various cancers. However, the role of SMYD2 in regulating ferroptosis in PC remains unexplored. This study aimed to investigate the role of SMYD2 in mediating ferroptosis and its mechanistic implications in PC progression.</p></div><div><h3>Methods</h3><p>The levels of SMYD2, c-Myc, and NCOA4 were assessed in PC tissues, and peritumoral tissues. SMYD2 expression was further analyzed in human PC cell lines. In BxPC3 cells, the expression of c-Myc, NCOA4, autophagy-related proteins, and mitochondrial morphology, was evaluated following transfection with si-SMYD2 and treatment with autophagy inhibitors and ferroptosis inhibitors. Ferroptosis levels were quantified using flow cytometry and ELISA assays. RNA immunoprecipitation was conducted to elucidate the interaction between c-Myc and NCOA4 mRNA. A xenograft mouse model was constructed to validate the impact of SMYD2 knockdown on PC growth.</p></div><div><h3>Results</h3><p>SMYD2 and c-Myc were found to be highly expressed in PC tissues, while NCOA4 showed reduced expression. Among the PC cell lines studied, BxPC3 cells exhibited the highest SMYD2 expression. SMYD2 knockdown led to decreased c-Myc levels, increased NCOA4 expression, reduced autophagy-related protein expression, mitochondrial shrinkage, and heightened ferroptosis levels. Additionally, an interaction between c-Myc and NCOA4 was identified. <em>In vivo</em>, SMYD2 knockdown inhibited tumor growth.</p></div><div><h3>Conclusions</h3><p>Targeting SMYD2 inhibits PC progression by promoting ferritinophagy-dependent ferroptosis through the c-Myc/NCOA4 axis. These findings provide insights into potential diagnostic and therapeutic strategies for PC.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874060","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
The angiotensin II/type 1 angiotensin II receptor pathway is implicated in the dysfunction of albumin endocytosis in renal proximal tubule epithelial cells induced by high glucose levels 血管紧张素 II/1型血管紧张素 II 受体途径与高血糖诱导的肾近曲小管上皮细胞白蛋白内吞功能障碍有关。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-29 DOI: 10.1016/j.bbagen.2024.130684
{"title":"The angiotensin II/type 1 angiotensin II receptor pathway is implicated in the dysfunction of albumin endocytosis in renal proximal tubule epithelial cells induced by high glucose levels","authors":"","doi":"10.1016/j.bbagen.2024.130684","DOIUrl":"10.1016/j.bbagen.2024.130684","url":null,"abstract":"<div><p>It is well-established that dysfunction of megalin-mediated albumin endocytosis by proximal tubule epithelial cells (PTECs) and the activation of the Renin-Angiotensin System (RAS) play significant roles in the development of Diabetic Kidney Disease (DKD). However, the precise correlation between these factors still requires further investigation. In this study, we aimed to elucidate the potential role of angiotensin II (Ang II), a known effector of RAS, as the mediator of albumin endocytosis dysfunction induced by high glucose (HG) in PTECs. To achieve this, we utilized LLC-PK1 and HK-2 cells, which are well-established in vitro models of PTECs. Using albumin-FITC or DQ-albumin as tracers, we observed that incubation of LLC-PK1 and HK-2 cells with HG (25 mM for 48 h) significantly reduced canonical receptor-mediated albumin endocytosis, primarily due to the decrease in megalin expression. HG increased the concentration of Ang II in the LLC-PK1 cell supernatant, a phenomenon associated with an increase in angiotensin-converting enzyme (ACE) expression and a decrease in prolyl carboxypeptidase (PRCP) expression. ACE type 2 (ACE2) expression remained unchanged. To investigate the potential impact of Ang II on HG effects, the cells were co-incubated with angiotensin receptor inhibitors. Only co-incubation with 10<sup>−7</sup> M losartan (an antagonist for type 1 angiotensin receptor, AT<sub>1</sub>R) attenuated the inhibitory effect of HG on albumin endocytosis, as well as megalin expression. Our findings contribute to understanding the genesis of tubular albuminuria observed in the early stages of DKD, which involves the activation of the Ang II/AT<sub>1</sub>R axis by HG.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141858863","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
CRISPR/Cas9 opens new horizon of crop improvement under stress condition CRISPR/Cas9 为逆境条件下的作物改良开辟了新天地
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-28 DOI: 10.1016/j.bbagen.2024.130685
{"title":"CRISPR/Cas9 opens new horizon of crop improvement under stress condition","authors":"","doi":"10.1016/j.bbagen.2024.130685","DOIUrl":"10.1016/j.bbagen.2024.130685","url":null,"abstract":"<div><p>Plants are exposed to a myriad of stresses, stemming from abiotic and biotic sources, significantly threatening agricultural productivity. The low crop yield, coupled with the global burden of population has resulted in the scarcity of quality food, exacerbating socio-economic issues like poverty, hunger, and malnutrition. Conventional breeding methods for the generation of stress-tolerant plants are time-consuming, limit genetic diversity, and are not sustainable for the consistent production of high-yielding crops. In recent years, the use of high-throughput, genome editing (GE) technique has revolutionized the crop-improvement paradigm, ushering greater prospects for agricultural progress. Among these tools, the Clustered regularly interspaced short palindromic repeat (CRISPR), and its associated nuclease protein Cas9, have appeared as a ground-breaking technology, allowing precise knockout (KO), upregulation, and downregulation of target gene expression. Apart from its high efficacy and speed, this programmable nuclease offers exceptional specificity with minimal off-target effects. Here in, we aim to review the latest findings on the application of the CRISPR/Cas9 genome editing tool for generating resilience in plants against environmental stresses.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141840443","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
B cell epitope mapping: The journey to better vaccines and therapeutic antibodies B 细胞表位图谱:通往更好的疫苗和治疗性抗体之路
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-28 DOI: 10.1016/j.bbagen.2024.130674
{"title":"B cell epitope mapping: The journey to better vaccines and therapeutic antibodies","authors":"","doi":"10.1016/j.bbagen.2024.130674","DOIUrl":"10.1016/j.bbagen.2024.130674","url":null,"abstract":"<div><p>B-cell epitope mapping is an approach that can identify and characterise specific antigen binding sites of B-cell receptors and secreted antibodies. The ability to determine the antigenic clusters of amino acids bound by B-cell clones provides unprecedented detail that will aid in developing novel and effective vaccine targets and therapeutic antibodies for various diseases. Here, we discuss conventional approaches and emerging techniques that are used to map B-cell epitopes.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845549","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
The combined inhibition of SLC1A3 and glutaminase in osimertinib-resistant EGFR mutant cells 在奥西美替尼耐药的表皮生长因子受体突变细胞中联合抑制 SLC1A3 和谷氨酰胺酶。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-24 DOI: 10.1016/j.bbagen.2024.130675
{"title":"The combined inhibition of SLC1A3 and glutaminase in osimertinib-resistant EGFR mutant cells","authors":"","doi":"10.1016/j.bbagen.2024.130675","DOIUrl":"10.1016/j.bbagen.2024.130675","url":null,"abstract":"<div><p>Background: We investigated the unknown mechanisms of osimertinib-resistant <em>EGFR</em>-mutant lung cancer. Methods: An osimertinib-resistant cell line (PC-9/OsmR2) was established through continuous exposure to osimertinib using an <em>EGFR</em> exon 19 deletion (19Del) lung adenocarcinoma cell line (PC-9). <em>EGFR</em> 19Del (M1), L858R/T790M/C797S (M6), and L858R/C797S (M8) expression vectors were introduced into Ba/F3 cells. A second osimertinib-resistant line (M1/OsmR) was established through continuous exposure to osimertinib using M1 cells. Results: SLC1A3 had the highest mRNA expression level in PC-9/OsmR2 compared to PC-9 cells by microarray analysis and SLC1A3 was increased by flow cytometry. In PC-9/OsmR2 cells, osimertinib sensitivity was significantly increased in combination with siSLC1A3. Because SLC1A3 functions in glutamic acid transport, osimertinib with a glutaminase inhibitor (CB-839) or an SLC1A3 inhibitor (TFB-TBOA) increased the sensitivity. Also, CB-839 plus TFB-TBOA without osimertinib resulted in greater susceptibility than did CB-839 or TFB-TBOA plus osimertinib. Comprehensive metabolome analysis showed that the M1/OsmR cells had significantly more glutamine and glutamic acid than M1 cells. CB-839 plus osimertinib exerted a synergistic effect on M6 cells and an additive effect on M8 cells. Conclusion: Targeting glutaminase and glutamic acid may overcome the osimertinib-resistant EGFR-mutant lung cancer.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141765119","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
Keratinocyte and myeloid MCPIP1 have distinct roles in maintaining skin homeostasis 角质细胞和骨髓 MCPIP1 在维持皮肤稳态方面发挥着不同的作用。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-18 DOI: 10.1016/j.bbagen.2024.130671
{"title":"Keratinocyte and myeloid MCPIP1 have distinct roles in maintaining skin homeostasis","authors":"","doi":"10.1016/j.bbagen.2024.130671","DOIUrl":"10.1016/j.bbagen.2024.130671","url":null,"abstract":"<div><p>The skin is a complex organ, and the intricate network between keratinocytes and immune cells is critical for ensuring skin function. Monocyte chemotactic protein-1-induced protein 1 (MCPIP1) is a ribonuclease that functions as a key negative modulator of inflammation. We previously reported that conditional deletion of MCPIP1 in keratinocytes (Mcpip1<sup>EKO</sup>) impairs skin integrity in adult mice. A similar phenotype was observed following the depletion of MCPIP1 in the myeloid compartment (Mcpip1<sup>MKO</sup>).</p><p>The aim of this study was to develop a keratinocyte and myeloid double-MCPIP1 knockout mouse model to clarify the specific roles of myeloid and epidermal MCPIP1 in skin biology.</p><p>Histological analyses indicated that the skin morphology changed after depletion of MCPIP1 in cells of myeloid origin as well as in keratinocytes. The thicknesses of the epidermal and subcutaneous fat layers increased in the mice with a loss of epidermal MCPIP1, whereas the loss of myeloid MCPIP1 had the opposite effect. In addition, both types of mice showed opposite responses to stimulation with 12-O-tetradecanoylphorbol-13-acetate. Transcriptomic profiling of whole-skin lysates revealed some common target transcripts in all the knockout mice. Further analyses revealed that distinct pathways are modulated following the loss of epidermal or myeloid MCPIP1. The skin morphology and inflammatory phenotype of keratinocyte and myeloid double-MCPIP1 knockout mice resembled those of mice with only keratinocyte-specific knockout of MCPIP1.</p><p>Overall, myeloid and epidermal MCPIP1 play important but distinct roles in the modulation of skin-related processes.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733474","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
Characterisation of biocondensate microfluidic flow using array-detector FCS 利用阵列检测器 FCS 对生物冷凝液微流体流动进行表征。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-17 DOI: 10.1016/j.bbagen.2024.130673
{"title":"Characterisation of biocondensate microfluidic flow using array-detector FCS","authors":"","doi":"10.1016/j.bbagen.2024.130673","DOIUrl":"10.1016/j.bbagen.2024.130673","url":null,"abstract":"<div><h3>Background</h3><p>Biomolecular condensation via liquid-liquid phase separation (LLPS) is crucial for orchestrating cellular activities temporospatially. Although the rheological heterogeneity of biocondensates and the structural dynamics of their constituents carry critical functional information, methods to quantitatively study biocondensates are lacking. Single-molecule fluorescence research can offer insights into biocondensation mechanisms. Unfortunately, as dense condensates tend to sink inside their dilute aqueous surroundings, studying their properties via methods relying on Brownian diffusion may fail.</p></div><div><h3>Methods</h3><p>We take a first step towards single-molecule research on condensates of Tau protein under flow in a microfluidic channel of an in-house developed microfluidic chip. Fluorescence correlation spectroscopy (FCS), a well-known technique to collect molecular characteristics within a sample, was employed with a newly commercialised technology, where FCS is performed on an array detector (AD-FCS), providing detailed diffusion and flow information.</p></div><div><h3>Results</h3><p>The AD-FCS technology allowed characterising our microfluidic chip, revealing 3D flow profiles. Subsequently, AD-FCS allowed mapping the flow of Tau condensates while measuring their burst durations through the stationary laser. Lastly, AD-FCS allowed obtaining flow velocity and burst duration data, the latter of which was used to estimate the condensate size distribution within LLPS samples.</p></div><div><h3>Conclusion</h3><p>Studying biocondensates under flow through AD-FCS is promising for single-molecule experiments. In addition, AD-FCS shows its ability to estimate the size distribution in condensate samples in a convenient manner, prompting a new way of investigating biocondensate phase diagrams.</p></div><div><h3>General significance</h3><p>We show that AD-FCS is a valuable tool for advancing research on understanding and characterising LLPS properties of biocondensates.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0304416524001168/pdfft?md5=5cba7af83e947409eb66fa929cefd684&pid=1-s2.0-S0304416524001168-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726819","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
Shotgun proteomics of thyroid carcinoma exosomes – Insight into the role of exosomal proteins in carcinogenesis and thyroid homeostasis 甲状腺癌外泌体的散射蛋白质组学研究--洞察外泌体蛋白质在癌变和甲状腺稳态中的作用。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-16 DOI: 10.1016/j.bbagen.2024.130672
{"title":"Shotgun proteomics of thyroid carcinoma exosomes – Insight into the role of exosomal proteins in carcinogenesis and thyroid homeostasis","authors":"","doi":"10.1016/j.bbagen.2024.130672","DOIUrl":"10.1016/j.bbagen.2024.130672","url":null,"abstract":"<div><h3>Background</h3><p>Transport of molecules via exosomes is one of the factors involved in thyroid cancer development, and transported molecules may serve as cancer biomarkers. The aim of the study was to characterize protein content of thyroid-derived exosomes and their functional effect exerted on recipient cells.</p></div><div><h3>Methods</h3><p>LC-MS/MS proteomics of exosomes released by FTC and 8305C thyroid carcinoma cell lines, and Nthy-ori 3–1 normal thyroid follicular cells was performed, followed by bioinformatic analysis and functional tests (wound healing and Alamar Blue assays).</p></div><div><h3>Results</h3><p>Exosomes from Nthy-ori 3–1 cells had the highest number of 1504 proteins, while in exosomes from thyroid carcinoma FTC and 8305C cells 730 and 1304 proteins were identified, respectively. For proteins uniquely found in FTC- and 8305C-derived exosomes, enriched cancer-related gene ontology categories included cell adhesion, positive regulation of cell migration, N-glycosylation, drug resistance, and response to NK/T cell cytotoxicity. Furthermore, through label-free quantification (that identified differentially expressed proteins) and comparison with The Human Protein Atlas database several potential diagnostic and/or prognostic biomarkers were indicated. Finally, exosomes from FTC and 8305C cells displayed ability to stimulate migratory properties of recipient Nthy-ori 3–1 cells. Additionally, 8305C-derived exosomes increased recipient cell viability.</p></div><div><h3>Conclusions</h3><p>Multiple proteins identified in thyroid cancer-derived exosomes have a direct link to thyroid cancer progression. Also, in functional tests exosomes enhanced growth and dissemination of non-transformed thyroid cells.</p></div><div><h3>General significance</h3><p>The obtained results expands the knowledge concerning the role of exosomal proteins in thyroid cancer and indicate potential biomarkers for further evaluation in clinical settings.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141722929","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
Mechanistic study of inhibitory peptides with SHP-1 in hypertonic environment for infection model 在高渗环境中用 SHP-1 对感染模型进行抑制肽的机制研究。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-10 DOI: 10.1016/j.bbagen.2024.130670
Shweta Khandibharad, Shailza Singh
{"title":"Mechanistic study of inhibitory peptides with SHP-1 in hypertonic environment for infection model","authors":"Shweta Khandibharad,&nbsp;Shailza Singh","doi":"10.1016/j.bbagen.2024.130670","DOIUrl":"10.1016/j.bbagen.2024.130670","url":null,"abstract":"<div><p>Cutaneous Leishmaniasis, an infectious disease is globally the most prevalent form of leishmaniasis accounting for approximately 1 million cases every year as per world health organization. Infected individuals develop skin lesion which has been reported to be infiltrated by immune cells and parasite with high sodium accumulation creating hypertonic environment. In our work, we tried to mimic the hypertonic environment in virtual environment to study dynamicity of SHP-1 and NFAT5 along with their interactions through molecular dynamics simulation. We validated the SHP-1 and NFAT5 dynamics in infection and HSD conditions to study the impact of hypertonicity derived NFAT5 mediated response to <em>L.major</em> infection. We also evaluated our therapeutic peptides for their binding to SHP-1 and to form stable complex. Membrane stability with the peptides was analyzed to understand their ability to sustain mammalian membrane. We identified PepA to be a potential candidate to interact with SHP-1. Inhibition of SHP-1 through PepA to discern IL-10 and IL-12 reciprocity may be assessed in future and furnish us with a potential therapeutic molecule. HSD mice exhibited high pro-inflammatory response to <em>L.major</em> infection which resulted in reduced lesion size. Contrary to observations in HSD mice, infection model exhibited low pro-inflammatory response and increased lesion size with high parasite load. Thus, increase in NFAT5 expression and reduced SHP-1 expression may result in disease resolving effect which can be further studied through incorporation of synthetic circuit using PepA to modulate IL-10 and IL-12 reciprocity.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141598336","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
ROCK1 regulates glycolysis in pancreatic cancer via the c-MYC/PFKFB3 pathway ROCK1 通过 c-MYC/PFKFB3 通路调节胰腺癌中的糖酵解。
IF 2.8 3区 生物学
Biochimica et biophysica acta. General subjects Pub Date : 2024-07-10 DOI: 10.1016/j.bbagen.2024.130669
{"title":"ROCK1 regulates glycolysis in pancreatic cancer via the c-MYC/PFKFB3 pathway","authors":"","doi":"10.1016/j.bbagen.2024.130669","DOIUrl":"10.1016/j.bbagen.2024.130669","url":null,"abstract":"<div><h3>Background</h3><p>Dysregulation of Rho-associated coiled coil-containing protein kinases (ROCKs) is involved in the metastasis and progression of various malignant tumors. However, how one of the isomers, ROCK1, regulates glycolysis in tumor cells is incompletely understood. Here, we attempted to elucidate how ROCK1 influences pancreatic cancer (PC) progression by regulating glycolytic activity.</p></div><div><h3>Methods</h3><p>The biological function of ROCK1 was analyzed <em>in vitro</em> by establishing a silenced cell model. Coimmunoprecipitation confirmed the direct binding between ROCK1 and c-MYC, and a luciferase reporter assay revealed the binding of c-MYC to the promoter of the PFKFB3 gene. These results were verified in animal experiments.</p></div><div><h3>Results</h3><p>ROCK1 was highly expressed in PC tissues and enriched in the cytoplasm, and its high expression was associated with a poor prognosis. Silencing ROCK1 inhibited the proliferation and migration of PC cells and promoted their apoptosis. Mechanistically, ROCK1 directly interacted with c-MYC, promoted its phosphorylation (Ser 62) and suppressed its degradation, thereby increasing the transcription of the key glycolysis regulatory factor PFKFB3, enhancing glycolytic activity and promoting PC growth. Silencing ROCK1 increased gemcitabine (GEM) sensitivity <em>in vivo</em> and <em>in vitro</em>.</p></div><div><h3>Conclusions</h3><p>ROCK1 promotes glycolytic activity in PC cells and promotes PC tumor growth through the c-MYC/PFKFB3 signaling pathway. ROCK1 knockdown can inhibit PC tumor growth <em>in vivo</em> and increase the GEM sensitivity of PC tumors, providing a crucial clinical therapeutic strategy for PC.</p></div>","PeriodicalId":8800,"journal":{"name":"Biochimica et biophysica acta. General subjects","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141598337","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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