Biochimica et biophysica acta. Molecular cell research最新文献

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Erythropoietin enhances iron bioavailability in HepG2 cells by downregulating hepcidin through mTOR, C/EBPα and HIF-1α 促红细胞生成素通过 mTOR、C/EBPα 和 HIF-1α 下调血红蛋白,从而提高 HepG2 细胞的铁生物利用率。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-22 DOI: 10.1016/j.bbamcr.2024.119800
Romina Eugenia Maltaneri, María Eugenia Chamorro, Silvana Estela Gionco, Alcira Beatriz Nesse, Daniela Cecilia Vittori
{"title":"Erythropoietin enhances iron bioavailability in HepG2 cells by downregulating hepcidin through mTOR, C/EBPα and HIF-1α","authors":"Romina Eugenia Maltaneri,&nbsp;María Eugenia Chamorro,&nbsp;Silvana Estela Gionco,&nbsp;Alcira Beatriz Nesse,&nbsp;Daniela Cecilia Vittori","doi":"10.1016/j.bbamcr.2024.119800","DOIUrl":"10.1016/j.bbamcr.2024.119800","url":null,"abstract":"<div><p>The regulation of iron (Fe) levels is essential to maintain an adequate supply for erythropoiesis, among other processes, and to avoid possible toxicity. The liver-produced peptide hepcidin is regarded as the main regulator of Fe absorption in enterocytes and release from hepatocytes and macrophages, as it impairs Fe export through ferroportin. The glycoprotein erythropoietin (Epo) drives erythroid progenitor survival and differentiation in the bone marrow, and has been linked to the mobilization of Fe reserves necessary for hemoglobin production. Herein we show that Epo inhibits hepcidin expression directly in the HepG2 hepatic cell line, thus leading to a decrease in intracellular Fe levels. Such inhibition was dependent on the Epo receptor-associated kinase JAK2, as well as on the PI3K/AKT/mTOR pathway, which regulates nutrient homeostasis. Epo was also found to decrease binding of the C/EBP-α transcription factor to the hepcidin promoter, which could be attributed to an increased expression of its inhibitor CHOP. Epo did not only hinder the stimulating effect of C/EBP-α on hepcidin transcription, but also favored hepcidin inhibition by HIF-1α, by increasing is nuclear translocation as well as its protein levels. Moreover, in assays with the inhibitor genistein, this transcription factor was found necessary for Epo-induced hepcidin suppression. Our findings support the involvement of the PI3K/AKT/mTOR pathway in the regulation of Fe levels by Epo, and highlight the contrasting roles of the C/EBP-α and HIF-1α transcription factors as downstream effectors of the cytokine in this process.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119800"},"PeriodicalIF":4.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
GPR176 promotes fibroblast-to-myofibroblast transition in organ fibrosis progression GPR176 在器官纤维化进程中促进成纤维细胞向肌成纤维细胞的转化
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-22 DOI: 10.1016/j.bbamcr.2024.119798
Yasuo Okamoto , Keisuke Kitakaze , Yasuhiro Takenouchi , Rena Matsui , Daisuke Koga , Ryo Miyashima , Hironobu Ishimaru , Kazuhito Tsuboi
{"title":"GPR176 promotes fibroblast-to-myofibroblast transition in organ fibrosis progression","authors":"Yasuo Okamoto ,&nbsp;Keisuke Kitakaze ,&nbsp;Yasuhiro Takenouchi ,&nbsp;Rena Matsui ,&nbsp;Daisuke Koga ,&nbsp;Ryo Miyashima ,&nbsp;Hironobu Ishimaru ,&nbsp;Kazuhito Tsuboi","doi":"10.1016/j.bbamcr.2024.119798","DOIUrl":"10.1016/j.bbamcr.2024.119798","url":null,"abstract":"<div><p>Fibrosis is characterized by excessive deposition of extracellular matrix proteins, particularly collagen, caused by myofibroblasts in response to chronic inflammation. Although G protein-coupled receptors (GPCRs) are among the targets of current antifibrotic drugs, no drug has yet been approved to stop fibrosis progression. Herein, we aimed to identify GPCRs with profibrotic effects. In gene expression analysis of mouse lungs with induced fibrosis, eight GPCRs were identified, showing a &gt;2-fold increase in mRNA expression after fibrosis induction. Among them, we focused on Gpr176 owing to its significant correlation with a myofibroblast marker α-smooth muscle actin (αSMA), the profibrotic factor transforming growth factor β1 (TGFβ1), and collagen in a human lung gene expression database. Similar to the lung fibrosis model, increased <em>Gpr176</em> expression was also observed in other organs affected by fibrosis, including the kidney, liver, and heart, suggesting its role in fibrosis across various organs. Furthermore, fibroblasts abundantly expressed Gpr176 compared to alveolar epithelial cells, endothelial cells, and macrophages in the fibrotic lung. GPR176 expression was unaffected by TGFβ1 stimulation in rat renal fibroblast NRK-49 cells, whereas knockdown of Gpr176 by siRNA reduced TGFβ1-induced expression of αSMA, fibronectin, and collagen as well as Smad2 phosphorylation. This suggested that Gpr176 regulates fibroblast activation. Consequently, Gpr176 acts in a profibrotic manner, and inhibiting its activity could potentially prevent myofibroblast differentiation and improve fibrosis. Developing a GPR176 inverse agonist or allosteric modulator is a promising therapeutic approach for fibrosis.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119798"},"PeriodicalIF":4.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0167488924001411/pdfft?md5=5af8dcb025784d23175bb8f54ffefe0e&pid=1-s2.0-S0167488924001411-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
The anti-angiogenic and anti-vasculogenic mimicry effects of GN25 in endothelial and glioma cells GN25 在内皮细胞和胶质瘤细胞中的抗血管生成和抗血管生成模拟作用。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-21 DOI: 10.1016/j.bbamcr.2024.119799
Zhi-Hong Wen , Long Chang , San-Nan Yang , Chen-Ling Yu , Fang-Yu Tung , Hsiao-Mei Kuo , I-Chen Lu , Chang-Yi Wu , Po-Chang Shih , Wu-Fu Chen , Nan-Fu Chen
{"title":"The anti-angiogenic and anti-vasculogenic mimicry effects of GN25 in endothelial and glioma cells","authors":"Zhi-Hong Wen ,&nbsp;Long Chang ,&nbsp;San-Nan Yang ,&nbsp;Chen-Ling Yu ,&nbsp;Fang-Yu Tung ,&nbsp;Hsiao-Mei Kuo ,&nbsp;I-Chen Lu ,&nbsp;Chang-Yi Wu ,&nbsp;Po-Chang Shih ,&nbsp;Wu-Fu Chen ,&nbsp;Nan-Fu Chen","doi":"10.1016/j.bbamcr.2024.119799","DOIUrl":"10.1016/j.bbamcr.2024.119799","url":null,"abstract":"<div><h3>Background and purpose</h3><p>Scientists have been exploring anti-angiogenic strategies to inhibit angiogenesis and prevent tumor growth. Vasculogenic mimicry (VM) in glioblastoma multiforme (GBM) poses a challenge, complicating anti-angiogenesis therapy. A novel drug, GN25 (3-[{1,4-dihydro-5,8-dimethoxy-1,4-dioxo-2-naphthalenyl}thio]-propanoic acid), can inhibit tumor formation. This study aims to investigate the microenvironmental effects and molecular mechanisms of GN25 in anti-angiogenesis and anti-VM.</p></div><div><h3>Experimental approach</h3><p>MTT (3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide) assay was used to evaluate the cell viability of different concentrations of GN25 in human umbilical vein endothelial cells (HUVEC) and Uppsala 87 malignant glioma (U87MG) cells. Functional assays were used to investigate the effects of GN25 on angiogenesis-related processes, whereas gelatin zymography, enzyme-linked immunosorbent assays, and Western blotting were utilized to assess the influence on matrix metalloproteinase (MMP)-2 and vascular endothelial growth factor (VEGF) secretion and related signaling pathways.</p></div><div><h3>Key results</h3><p>GN25 suppressed migration, wound healing, and tube formation in HUVECs and disrupted angiogenesis in a rat aorta ring and zebrafish embryo model. GN25 dose-dependently reduced phosphatidylinositol 3-kinase/AKT and inhibited MMP-2/VEGF secretion in HUVECs. In U87MG cells, GN25 inhibited migration, wound healing, and VM, accompanied by a decrease in MMP-2 and VEGF secretion. The results indicate that GN25 effectively inhibits angiogenesis and VM formation in HUVECs and U87MG cells without affecting preexisting vascular structures.</p></div><div><h3>Conclusion and implications</h3><p>This study elaborated GN25's potential as an anti-angiogenic agent by elucidating its inhibitory effects on classical angiogenesis. VM provides valuable insights for developing novel therapeutic strategies against tumor progression and angiogenesis-related diseases. These results indicate the potential of GN25 as a promising candidate for angiogenesis-related diseases.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119799"},"PeriodicalIF":4.6,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141750943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Tetrameric, active PKM2 inhibits IP3 receptors, potentially requiring GRP75 as an additional interaction partner 四聚体活性 PKM2 间接抑制 IP3 受体,可能需要 GRP75 作为三级伙伴。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-20 DOI: 10.1016/j.bbamcr.2024.119796
Fernanda O. Lemos , Ian de Ridder , Larry Wagner , Martin D. Bootman , Geert Bultynck , David I. Yule , Jan B. Parys
{"title":"Tetrameric, active PKM2 inhibits IP3 receptors, potentially requiring GRP75 as an additional interaction partner","authors":"Fernanda O. Lemos ,&nbsp;Ian de Ridder ,&nbsp;Larry Wagner ,&nbsp;Martin D. Bootman ,&nbsp;Geert Bultynck ,&nbsp;David I. Yule ,&nbsp;Jan B. Parys","doi":"10.1016/j.bbamcr.2024.119796","DOIUrl":"10.1016/j.bbamcr.2024.119796","url":null,"abstract":"<div><p>Pyruvate kinase M2 (PKM2) is a key glycolytic enzyme interacting with the inositol 1,4,5-trisphosphate receptor (IP<sub>3</sub>R). This interaction suppresses IP<sub>3</sub>R-mediated cytosolic [Ca<sup>2+</sup>] rises. As PKM2 exists in monomeric, dimeric and tetrameric forms displaying different properties including catalytic activity, we investigated the molecular determinants of PKM2 enabling its interaction with IP<sub>3</sub>Rs. Treatment of HeLa cells with TEPP-46, a compound stabilizing the tetrameric form of PKM2, increased both its catalytic activity and the suppression of IP<sub>3</sub>R-mediated Ca<sup>2+</sup> signals. Consistently, in PKM2 knock-out HeLa cells, PKM2<sup>C424L</sup>, a tetrameric, highly active PKM2 mutant, but not inactive PKM2<sup>K270M</sup> or the less active PKM2<sup>K305Q</sup>, suppressed IP<sub>3</sub>R-mediated Ca<sup>2+</sup> release. Surprisingly, however, in vitro assays did not reveal a direct interaction between purified PKM2 and either the purified Fragment 5 of IP<sub>3</sub>R1 (a.a. 1932–2216) or the therein located D5SD peptide (a.a. 2078–2098 of IP<sub>3</sub>R1), the presumed interaction sites of PKM2 on the IP<sub>3</sub>R. Moreover, on-nucleus patch clamp of heterologously expressed IP<sub>3</sub>R1 in DT40 cells devoid of endogenous IP<sub>3</sub>Rs did not reveal any functional effect of purified wild-type PKM2, mutant PKM2 or PKM1 proteins. These results indicate that an additional factor mediates the regulation of the IP<sub>3</sub>R by PKM2 in cellulo. Immunoprecipitation of GRP75 using HeLa cell lysates co-precipitated IP<sub>3</sub>R1, IP<sub>3</sub>R3 and PKM2. Moreover, the D5SD peptide not only disrupted PKM2:IP<sub>3</sub>R, but also PKM2:GRP75 and GRP75:IP<sub>3</sub>R interactions. Our data therefore support a model in which catalytically active, tetrameric PKM2 suppresses Ca<sup>2+</sup> signaling via the IP<sub>3</sub>R through a multiprotein complex involving GRP75.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119796"},"PeriodicalIF":4.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Caveolin-2 controls preadipocyte survival in the mitotic clonal expansion for adipogenesis Caveolin-2控制着有丝分裂克隆扩增过程中前脂肪细胞的存活,从而促进脂肪的生成。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-20 DOI: 10.1016/j.bbamcr.2024.119793
Moonjeong Choi , Kyuho Jeong , Yunbae Pak
{"title":"Caveolin-2 controls preadipocyte survival in the mitotic clonal expansion for adipogenesis","authors":"Moonjeong Choi ,&nbsp;Kyuho Jeong ,&nbsp;Yunbae Pak","doi":"10.1016/j.bbamcr.2024.119793","DOIUrl":"10.1016/j.bbamcr.2024.119793","url":null,"abstract":"<div><p>Here, we report that Caveolin-2 (Cav-2) is a cell cycle regulator in the mitotic clonal expansion (MCE) for adipogenesis. For the G2/M phase transition and re-entry into the G1 phase, dephosphorylated Cav-2 by protein tyrosine phosphatase 1B (PTP1B) controlled epigenetic activation of <em>Ccnb1</em>, <em>Cdk1</em>, and <em>p21</em> in a lamin A/C-dependent manner, thereby ensuring the survival of preadipocytes. Cav-2, associated with lamin A/C, recruited the repressed promoters of <em>Ccnb1</em> and <em>Cdk1</em> for activation, and disengaged the active promoter of <em>p21</em> from lamin A/C for inactivation through histone H3 modifications at the nuclear periphery. Cav-2 deficiency abrogated the histone H3 modifications and impeded the transactivation of <em>Ccnb1</em>, <em>Cdk1</em>, and <em>p21</em>, leading to a delay in mitotic entry, retardation of re-entry into G1 phase, and the apoptotic cell death of preadipocytes. Re-expression of Cav-2 restored the G2/M phase transition and G1 phase re-entry, preadipocyte survival, and adipogenesis in Cav-2-deficient preadipocytes. Our study uncovers a novel mechanism by which cell cycle transition and apoptotic cell death are controlled for adipocyte hyperplasia.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119793"},"PeriodicalIF":4.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
NRP1 promotes osteo/odontogenic differentiation via shroom3 in dental pulp stem cells NRP1通过shroom3促进牙髓干细胞的成骨/成牙分化。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-20 DOI: 10.1016/j.bbamcr.2024.119795
Zongyu Li, Aokang Yao, Xinyue Yang, Sheng Luo, Zhuoyang Wu, Yaqiong Yu
{"title":"NRP1 promotes osteo/odontogenic differentiation via shroom3 in dental pulp stem cells","authors":"Zongyu Li,&nbsp;Aokang Yao,&nbsp;Xinyue Yang,&nbsp;Sheng Luo,&nbsp;Zhuoyang Wu,&nbsp;Yaqiong Yu","doi":"10.1016/j.bbamcr.2024.119795","DOIUrl":"10.1016/j.bbamcr.2024.119795","url":null,"abstract":"<div><p>Neuropilin-1 (NRP1) is a single transmembrane glycoprotein involved in a variety of physiological events. However, the exact mechanisms by which NRP1 regulates dental pulp stem cells (DPSCs) to differentiate toward an osteo/odontogenic phenotype are poorly understood. Here, we determined the significantly increased expression of full-length NRP1 and glycosaminoglycan (GAG)-modified NRP1 during osteo/odontogenesis in DPSCs. NRP1 was confirmed to promote alkaline phosphatase (ALP) activity, mineralized nodule deposition, protein and mRNA expression of Runx2, DSPP and DMP1 in DPSCs via the loss-of-function and gain-of-function approaches. Further, a non-GAG-modified NRP1 mutant (NRP1 S<sub>612</sub>A) was generated and the suppression of osteo/odontogenic differentiation was observed in the NRP1 S<sub>612</sub>A overexpression cells. Knockdown of the adaptor protein shroom3 resulted in the inhibition of osteo/odontogenesis. The protein-protein interaction network, the protein-protein docking and confocal analyses indicated the interactions between NRP1 and shroom3. Furthermore, immunoprecipitation followed by western analysis confirmed the binding of NRP1 to shroom3, but overexpression of NRP1 S<sub>612</sub>A greatly influenced the recruitment of shroom3 by NRP1. These results provide strong evidence that NRP1 is a critical regulator for osteo/odontogenesis through interacting with shroom3. Moreover, our results indicate that NRP1 S<sub>612</sub>A attenuates osteo/odontogenesis, suggesting that GAG modification is essential for NRP1 in DPSCs.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119795"},"PeriodicalIF":4.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Iron‑sulfur cluster synthesis in plastids by the SUF system: A mechanistic and structural perspective 质体中通过 SUF 系统合成铁硫簇:从机理和结构角度看
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-20 DOI: 10.1016/j.bbamcr.2024.119797
Antoine Kairis , Benjamin Das Neves , Jérémy Couturier , Claire Remacle , Nicolas Rouhier
{"title":"Iron‑sulfur cluster synthesis in plastids by the SUF system: A mechanistic and structural perspective","authors":"Antoine Kairis ,&nbsp;Benjamin Das Neves ,&nbsp;Jérémy Couturier ,&nbsp;Claire Remacle ,&nbsp;Nicolas Rouhier","doi":"10.1016/j.bbamcr.2024.119797","DOIUrl":"10.1016/j.bbamcr.2024.119797","url":null,"abstract":"<div><p>About 50 proteins expressed in plastids of photosynthetic eukaryotes ligate iron‑sulfur (Fe-S) clusters and ensure vital functions in photosynthesis, sulfur and nitrogen assimilation, but also in the synthesis of pigments, vitamins and hormones. The synthesis of these Fe-S clusters, which are co- or post-translationally incorporated into these proteins, relies on several proteins belonging to the so-called sulfur mobilization (SUF) machinery. An Fe-S cluster is first <em>de novo</em> synthesized on a scaffold protein complex before additional late-acting maturation factors act in the specific transfer, possible conversion and insertion of this cluster into target recipient proteins. In this review, we will summarize what is known about the molecular mechanisms responsible for both the synthesis and transfer steps, focusing in particular on the structural aspects that allow the formation of the required protein complexes.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119797"},"PeriodicalIF":4.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S016748892400140X/pdfft?md5=29b5a7e8c72afeb7e47322837e37384a&pid=1-s2.0-S016748892400140X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Reprogramming of normal fibroblasts into ovarian cancer-associated fibroblasts via non-vesicular paracrine signaling induces an activated fibroblast phenotype 通过非囊旁分泌信号将正常成纤维细胞重编程为卵巢癌相关成纤维细胞,从而诱导活化的成纤维细胞表型。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-20 DOI: 10.1016/j.bbamcr.2024.119801
Hailey Axemaker , Simona Plesselova , Kristin Calar , Megan Jorgensen , Jared Wollman , Pilar de la Puente
{"title":"Reprogramming of normal fibroblasts into ovarian cancer-associated fibroblasts via non-vesicular paracrine signaling induces an activated fibroblast phenotype","authors":"Hailey Axemaker ,&nbsp;Simona Plesselova ,&nbsp;Kristin Calar ,&nbsp;Megan Jorgensen ,&nbsp;Jared Wollman ,&nbsp;Pilar de la Puente","doi":"10.1016/j.bbamcr.2024.119801","DOIUrl":"10.1016/j.bbamcr.2024.119801","url":null,"abstract":"<div><p>Cancer-associated fibroblasts (CAFs) are key contributors to ovarian cancer (OC) progression and therapeutic resistance through dysregulation of the extracellular matrix (ECM). CAFs are a heterogenous population derived from different cell types through activation and reprogramming. Current studies rely on uncharacterized heterogenous primary CAFs or normal fibroblasts that fail to recapitulate CAF-like tumor behavior. Here, we present that conditioned media from ovarian cancer lines leads to an increase in the activated state of fibroblasts demonstrated by functional assays and up-regulation of known CAF-related genes and ECM pathways. Phenotypic and functional characterization demonstrated that the conditioned CAFs expressed a CAF-like phenotype, strengthened proliferation, secretory, contractility, and ECM remodeling properties when compared to resting normal fibroblasts, consistent with an activated fibroblast status. Moreover, conditioned CAFs significantly enhanced drug resistance and tumor progression. Critically, the conditioned CAFs resemble a transcriptional signature with involvement of ECM remodeling. The present study provides mechanistic and functional insights about the activation and reprogramming of CAFs in the ovarian tumor microenvironment mediated by non-vesicular paracrine signaling. Moreover, it provides a translational based approach to reprogram normal fibroblasts from both uterine and ovarian origin into CAFs using tumor-derived conditioned media. Using these resources, further development of therapeutics that possess potentiality and specificity towards CAF/ECM-mediated chemoresistance in OC are further warranted.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119801"},"PeriodicalIF":4.6,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0167488924001447/pdfft?md5=f551f99dfef9248f1d39f3366e526b0d&pid=1-s2.0-S0167488924001447-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Interactions with sulfur acceptors modulate the reactivity of cysteine desulfurases and define their physiological functions 与硫受体的相互作用调节了半胱氨酸脱硫酶的反应性,并确定了它们的生理功能。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-07-19 DOI: 10.1016/j.bbamcr.2024.119794
Jimmy Swindell, Patricia C. Dos Santos
{"title":"Interactions with sulfur acceptors modulate the reactivity of cysteine desulfurases and define their physiological functions","authors":"Jimmy Swindell,&nbsp;Patricia C. Dos Santos","doi":"10.1016/j.bbamcr.2024.119794","DOIUrl":"10.1016/j.bbamcr.2024.119794","url":null,"abstract":"<div><p>Sulfur-containing biomolecules such as [Fe<img>S] clusters, thiamin, biotin, molybdenum cofactor, and sulfur-containing tRNA nucleosides are essential for various biochemical reactions. The amino acid <span>l</span>-cysteine serves as the major sulfur source for the biosynthetic pathways of these sulfur-containing cofactors in prokaryotic and eukaryotic systems. The first reaction in the sulfur mobilization involves a class of pyridoxal-5′-phosphate (PLP) dependent enzymes catalyzing a Cys:sulfur acceptor sulfurtransferase reaction. The first half of the catalytic reaction involves a PLP-dependent C<img>S bond cleavage, resulting in a persulfide enzyme intermediate. The second half of the reaction involves the subsequent transfer of the thiol group to a specific acceptor molecule, which is responsible for the physiological role of the enzyme. Structural and biochemical analysis of these Cys sulfurtransferase enzymes shows that specific protein-protein interactions with sulfur acceptors modulate their catalytic reactivity and restrict their biochemical functions.</p></div>","PeriodicalId":8754,"journal":{"name":"Biochimica et biophysica acta. Molecular cell research","volume":"1871 7","pages":"Article 119794"},"PeriodicalIF":4.6,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Corrigendum to “Mitochondrial DNA has a pro-inflammatory role in AMD” [Biochim. Biophys. Acta 1853 (2015) 2897-2906] 对 "线粒体DNA在AMD中具有促炎作用 "的更正[Biochim. Biophys. Acta 1853 (2015) 2897-2906]。
IF 4.6 2区 生物学
Biochimica et biophysica acta. Molecular cell research Pub Date : 2024-06-29 DOI: 10.1016/j.bbamcr.2024.119790
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