Cytotechnology最新文献

{"title":"Oral cell lysates reduce osteoclastogenesis in murine bone marrow cultures.","authors":"Layla Panahipour, Azarakhsh Oladzad Abbasabadi, Feng Shao, Reinhard Gruber","doi":"10.1007/s10616-024-00688-1","DOIUrl":"https://doi.org/10.1007/s10616-024-00688-1","url":null,"abstract":"<p><p>Mechanical and thermal cell damage can occur due to invasive procedures related to drilling, the insertion of dental implants, and periodontal treatments. Necrotic cells release the content of their cytoplasm and membrane fragments, thereby signaling the need for repair, which includes bone resorption by osteoclasts and inflammation. Here we screened lysates from human gingival fibroblasts, HSC2 and TR146 oral squamous carcinoma cell lines, as well as murine IDG-SW3 osteocytic and RAW264.7 macrophage cell lines for their potential to modulate in vitro osteoclastogenesis in murine bone marrow cultures. We also tested the impact of necrotic lysates on modulating the expression of inflammatory cues in murine ST2 bone marrow stromal cells. We report here that independent of human or murine origin, all cell lysates significantly reduced in vitro osteoclastogenesis in bone marrow cultures, as indicated by the expression of the osteoclast marker genes cathepsin K and tartrate-resistant acid phosphatase and the respective histochemical staining in multinucleated cells. We also found that lysates from HSC2 and TR146 cells significantly pushed the expression of CCL2, CCL5, CXCL1, IL1, and IL6 in ST2 cells. These findings suggest that oral cell lysates reduce in vitro osteoclastogenesis, but only damaged oral squamous carcinoma cells can force murine stromal cells to produce an inflammatory environment.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"39"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11707159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142946109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of cell lysis for improved understanding between the shake tube and stirred tank reactor perfusion CHO cell cultures.","authors":"Weijian Zhang, Qingyuan Ran, Yang Zhou, Liang Zhao, Qian Ye, Wen-Song Tan","doi":"10.1007/s10616-024-00662-x","DOIUrl":"10.1007/s10616-024-00662-x","url":null,"abstract":"<p><p>Shake tubes (ST) are widely employed to assist the development of the stirred tank reactor (STR) perfusion cell culture. However, cell lysis may be frequently underrestimated and lead to culture performance discrepency between these systems, rendering the ST model ineffective in designing the STR perfusion cultures. In this study, perfusion culture performance bewteen the STR and ST was investigated under various conditions with the analysis of cell lysis. Comparable performance was observed bewteen the two systems at low perfusion rates ( <math><mi>D</mi></math> ≤1.0 VVD), except that the specific productivity ( <math><msub><mi>q</mi> <mi>P</mi></msub> </math> ) of the STR was decreased at <math><mi>D</mi></math> =0.5 VVD, which was related to product degradation by cell lysis. In contrast, significant differences in cell maintenance, metabolism, and <math><msub><mi>q</mi> <mi>P</mi></msub> </math> were found at <math><mi>D</mi></math> =2.0 VVD. By the analysis of the authentic cell growth and death kinetics, it was found that cell growth arrest, potentially due to the limited availability of oxygen, led to the stable cell maintenance at VCD≈90 × 10⁶ cells/ml and altered cellular metabolism for the ST, while the continuous decline of VCD and <math><msub><mi>q</mi> <mi>P</mi></msub> </math> in the STR were related to excessive cell death, subsequently ascribed to the harmful hydrodynamic stress conditions. We further demonstrated that cell lysis accounted for 57.62-76.29% of the total generated biomass in both the reactors and significantly impacted the estimation of process descriptors crucial for understanding the true cellular states. With cell lysis in sight, cell performance can therefore be accurately described and this knowledge can be further leveraged to expedite process development for the perfusion cell culture processes.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"7"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aging and cell expansion enhance microRNA diversity in small extracellular vesicles produced from human adipose-derived stem cells.","authors":"Toshiya Tsubaki, Ryota Chijimatsu, Taiga Takeda, Maki Abe, Takahiro Ochiya, Shinsaku Tsuji, Keita Inoue, Tokio Matsuzaki, Yasuhide Iwanaga, Yasunori Omata, Sakae Tanaka, Taku Saito","doi":"10.1007/s10616-024-00675-6","DOIUrl":"10.1007/s10616-024-00675-6","url":null,"abstract":"<p><p>Adipose-derived stem cells (ASCs) and their small extracellular vesicles (sEVs) hold significant potential for regenerative medicine due to their tissue repair capabilities. The microRNA (miRNA) content in sEVs varies depending on ASC status; however, the effects of aging and cell passage on miRNA profiles remain unclear. In this study, we examined the effects of donor age and cell expansion on ASC characteristics and transcriptome using ASCs obtained from three young and three old donors. Cell expansion significantly impaired stem cell properties, notably reducing proliferation and differentiation capacities. In contrast, donor age had minimal effects on ASCs. RNA sequencing (RNA-seq) revealed differences in gene expression related to stemness, phagocytosis, and metabolic processes influenced by cell expansion. To investigate miRNA variability, we performed small RNA-seq on sEVs collected from ASCs of all six donors. The miRNA profiles were influenced by donor age and cell passage. Interestingly, functional enrichment analysis indicated that advanced donor age and increased cell passage may enhance the production of miRNAs associated with organ development through various pathways. These findings suggest that donor age and cell expansion differentially influence ASC characteristics and sEV miRNA content, highlighting the need for disease-specific conditioning of ASCs to optimize the therapeutic effects of sEVs in clinical applications.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s10616-024-00675-6.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"15"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11631832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142812659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing the growth kinetics and characteristics of Wharton's jelly derived mesenchymal stem cells expanded using different culture mediums.","authors":"Muhammad Najib Fathi Hassan, Muhammad Dain Yazid, Mohd Heikal Bin Mohd Yunus, Yogeswaran Lokanathan, Min Hwei Ng, Ruszymah Bt Hj Idrus, Yee Loong Tang, See Nguan Ng, Jia Xian Law","doi":"10.1007/s10616-024-00682-7","DOIUrl":"10.1007/s10616-024-00682-7","url":null,"abstract":"<p><p>Wharton's jelly-derived mesenchymal stem cells (WJ-MSCs) can be isolated from umbilical cords which is abundant and easy to obtain. Due to their potent immunosuppressive properties, multilineage differentiation potential, and lack of ethical issues, WJ-MSCs are considered a promising candidate for therapeutic applications. However, large-scale in vitro expansion is necessary to obtain enough cells for therapeutic purposes. Therefore, this study aimed to optimize cell culture conditions and determine the characteristics of expanded WJ-MSCs. WJ-MSCs were seeded in 6-well plates at a density of 5000 cells/cm² and cultured with different mediums, including DMEM-LG+10% FBS, DMEM-LG+10% HPL, serum-free commercial medium 1, serum-free GMP grade commercial medium 2, and HPL supplemented commercial medium 3. The cell morphology and growth kinetics were compared, and the three most suitable mediums were selected for further experiments. WJ-MSCs were then cultured in the selected mediums at seeding densities ranging from 1000 to 5000 cells/cm², and cell growth kinetics were analysed. WJ-MSCs cultured in the selected mediums were characterized by their immunophenotype, tri-lineage differentiation potential and immunosuppression property. WJ-MSCs cultured with DMEM-LG+10% HPL, commercial medium 1 and commercial medium 2 showed smaller size, significantly higher cell yield, and shorter population doubling time than those cultured in other mediums. Hence, these three mediums were selected for further experiments. Only DMEM-LG + 10% HPL medium maintained high cell yields (1.48 ± 0.14 × 10⁶ with bFGF and 1.56 ± 0.17 × 10⁶ without bFGF) at the lowest seeding density tested. However, WJ-MSCs cultured in all three mediums expressed the MSC surface markers, were able to suppress PBMC proliferation, and could differentiate into adipogenic, chondrogenic and osteogenic lineages. In summary, DMEM-LG+10% HPL is the best medium for WJ-MSC expansion, as it provides the highest cell yield without compromising cell characteristics and functionality. The potential of this medium for large-scale expansion using a bioreactor or multilayered flask should be investigated in the future.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"24"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11659549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proposal for a non-adhesive single-cell culture technology for primary hepatocytes.","authors":"Mario K Uehara, Ronald Bual, Muhammad Shafiq, Kozue Yoshida, Hiroyuki Ijima","doi":"10.1007/s10616-024-00696-1","DOIUrl":"10.1007/s10616-024-00696-1","url":null,"abstract":"<p><p>Primary hepatocytes (PHs) are indispensable for studying liver function, drug screening, and regenerative medicine. However, freshly isolated PHs only survive for a few hours in non-adherent suspension culture. This study proposes treatment with PEG-GRGDS, a polymer-peptide conjugate comprising polyethylene glycol (PEG) and the pentapeptide sequence Gly-Arg-Gly-Asp-Ser (GRGDS), to sustain the viability of dispersed single PHs under non-adherent conditions. As a proof of concept, PHs treated with the PEG-GRGDS molecule were cultured in a microarray with single-cell-sized microwells. After 24 h of culture, enhanced cell survival was confirmed via esterase activity alongside activity for Cytochrome P450 1A1 (CYP1A1). Some liver-specific functionalities, including albumin secretion, were observed in the treated PHs. Additionally, it was observed that the length of the PEG-chain in the conjugates influenced the maintenance of single-cell dispersion and the levels of polymerized actin in the cells. These findings suggest that treatment with a polymer-peptide like PEG-GRGDS might provide a promising platform for the short-term culture of non-adherent single PHs.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s10616-024-00696-1.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"30"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11685352/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142913907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IBS008738, a TAZ activator, facilitates muscle repair and inhibits muscle injury in a mouse model of sport-induced injury.","authors":"Yiming Wang, Datian Liu, Sining Wang, Yiliang Li, Guanming Liu","doi":"10.1007/s10616-024-00667-6","DOIUrl":"10.1007/s10616-024-00667-6","url":null,"abstract":"<p><p>High-intensity exercise can cause excessive generation of ROS and induce oxidative stress injury in the body, which is a major reason accounting for muscle damage following exercise. The previous study demonstrated that IBS008738, the activator of TZA, was able to enhance myogenesis in mouse myogenic C2C12 cells, prevent dexamethasone-induced muscle atrophy, and facilitate muscle repair in cardiotoxin-induced muscle injury. Accordingly, our study was designed to probe into the potential role of IBS008738 in muscle damage in mouse models induced by high-intensity exercise. Mice were first administrated with IBS008738, and then subjected to high-intensity eccentric exercise to induce muscle damage after 24 h. During the experiment, mouse weight change and food take were recorded. At the end of the experiment, blood samples were collected through cardiac puncture and centrifugated. Serum levels of blood urea nitrogen (BUN), creatinine, glucose, lactate dehydrogenase (LDH), creatinine kinase (CK), and C-related protein were evaluated using an autoanalyzer. After mice were sacrificed, the gastrocnemius muscles were dissected for DCFH-DA assay of ROS generation, thiobarbituric acid-reactive substances (TBARS) assay of MDA content, hematoxylin-eosin (H&E) staining of histological examination, and western blotting analysis of Akt/mTOR/S6K1 signaling expression. IBS008738 and/or exercise exert significant effects on mouse weight and food take. High-intensity exercise markedly increased ROS generation and lipid peroxidation, upregulated serum levels of CK, LDH, and C-related protein, ameliorated muscle histological damage, and reduced TAZ, phosphorylated (p)-Akt, p-mTOR, and p-S6K1 protein levels in mice. However, IBS008738 administration reversed the above changes induced by high-intensity exercise in mice. IBS008738 alleviates oxidative stress and muscle damage in mice after high-intensity exercise by activating TAZ and the Akt/mTOR/S6K1 signaling pathway.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s10616-024-00667-6.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"2"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11576750/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142686022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of a modified lactate dehydrogenase assay to evaluate the viability of cells cultured on 3D scaffolds when commonly used assays fail.","authors":"Zhanna K Nazarkina, Alena O Stepanova, Tatyana A Savostyanova, Pavel P Laktionov","doi":"10.1007/s10616-024-00670-x","DOIUrl":"10.1007/s10616-024-00670-x","url":null,"abstract":"<p><p>The development of new compounds or materials for medicine suggests a study of their cytotoxicity. The effect of a material on cell viability can be evaluated by several methods based on DNA content, DNA synthesis, plasma membrane integrity, cellular enzyme activity, cellular reducing potential, and ATP level. Sometimes it is impossible to apply widely used commercially available reagents, e.g., when cells are cultured on materials, that interfere with the chemicals used or resulting in the course of enzymatic reaction. Here, we offer a method for monitoring the viability of cells proliferating on different supports in vitro. The method is based on the measurement of lactate dehydrogenase (LDH) activity in cellular lysates. After cells were lysed in 1% Nonidet P40 and supernatants were transferred into fresh tubes, LDH activity was measured in the supernatants using colorimetric method. The usefulness of the test was studied using human cervical adenocarcinoma HeLa cells and human gingival fibroblasts cultivated on different materials, including activated carbon-loaded scaffolds. The comparison with widely used AlamarBlue® assay confirms the LDH-based method as an appropriate alternative for measuring the living cell number in vitro in a quick, simple, and cost-effective manner when widespread methods for the evaluation of cell viability could not be used.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"9"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11604983/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synovial fluid mesenchymal stem cell-derived microRNA-127-5p can modulate transforming growth factor-β signaling after in vitro chondrogenic induction.","authors":"Tugba Semerci Sevimli, Ulukan Inan, Emilia Qomi Ekenel, Cemre Ozgul, Cem Ozgur Danaci, Sevval Cetinkaya, Zarifa Ahmadova","doi":"10.1007/s10616-024-00660-z","DOIUrl":"10.1007/s10616-024-00660-z","url":null,"abstract":"<p><p>MicroRNA profiling in human cartilage is necessary for chondrogenesis. The study aimed to compare microRNA 127-5p (miR-127-5p) and TGF-β signaling pathway gene expressions of human adipose tissue-derived mesenchymal stem cells (hAT-MSCs) and synovial fluid-derived stem cells (hSF-MSCs) after induced chondrogenesis. MSCs induced into chondrogenic differentiation. Alcian Blue and Safranin O staining were performed to determine chondrogenic differentiation. The RT-qPCR determined the expression levels of miR-127-5p and TGF-β signaling pathway genes. miR-127-5p expression was significantly higher in chondrogenic differentiated hSF-MSCs (dhSF-MSCs) (p < 0.05). <i>TGF-β</i>, <i>SMAD2</i>, and <i>SMAD3</i> expressions were substantially higher in dhSF-MSCs (all p < 0.001), while <i>SMAD4</i>, and <i>ACAN</i> expressions were downregulated (all p < 0.001). No difference was detected between <i>COL1A2</i> expression levels. This study suggests that miR-127-5p derived from hSF-MSCs may regulate chondrogenesis, thereby inducing the <i>TGF-β</i> pathway activation, and also presents, for the first time, a comparative analysis of the expression of miR-127-5p and the TGF-β signaling pathway genes of hSF-MSCs and hAT-MSCs concerning differences in chondrogenic potential.</p><p><strong>Graphical abstract: </strong></p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"8"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11602905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of scaffold manufacturing conditions for 3-dimensional culture of myogenic cell line derived from black sea bream (<i>Acanthopagrus schlegelii</i>).","authors":"Ye-Eun Lee, Eun Soo Jeong, Young-Mog Kim, Seung Pyo Gong","doi":"10.1007/s10616-024-00676-5","DOIUrl":"10.1007/s10616-024-00676-5","url":null,"abstract":"<p><p>Culturing fish myogenic cells in vitro holds significant potential to revolutionize aquaculture practices and support sustainable food production. However, advancement in in vitro culture technologies for skeletal muscle-derived myogenic cells have predominantly focused on mammals, with limited studies on fish. Scaffold-based three-dimensional (3D) culture systems for fish myogenic cells remain underexplored, highlighting a critical research gap compared to mammalian systems. This study evaluated the effects of scaffold composition and manufacturing methods on cellular growth in the 3D culture of black sea bream (<i>Acanthopagrus schlegelii</i>) myogenic cells. Scaffolds were manufactured using three natural polymers: black sea bream-derived extracellular matrix (ECM), sodium alginate, and gelatin. Two scaffold types were tested: \"cell-laden scaffolds\" prepared by mixing cells into the pre-scaffold solution followed by gelation, and \"cell-seeding scaffolds\" produced by freezing, gelation, and lyophilization before cell inoculation. Scaffold characteristics, including pore size, porosity, swelling ratio, and degradation rate, were assessed. Cell-seeding scaffolds exhibited relatively larger pore size, higher porosity, and higher degradation rate, while cell-laden scaffolds had higher swelling ratios. When black sea bream myogenic cells were cultured in these scaffolds, cell-seeding scaffolds supported cellular growth, particularly when composed of 3% sodium alginate and 4% gelatin with any concentration of ECM. In contrast, cell-laden scaffolds did not support cellular growth regardless of their composition. These findings provide fundamental insights for optimizing scaffold properties to develop more optimized conditions for 3D culture of fish muscle lineage cells.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"18"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11635079/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142827626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silencing of LINC01278 promotes sensitivity of non-small cell lung cancer cells to osimertinib by targeting miR-324-3p/ZFX axis.","authors":"Quan Lei, Ping Liu, Xinlei Guan, Li Liu, Wenjuan He","doi":"10.1007/s10616-024-00673-8","DOIUrl":"10.1007/s10616-024-00673-8","url":null,"abstract":"<p><p>Osimertinib has been demonstrated to be effective for improving the prognosis of patients with epidermal growth factor receptor mutation-positive lung cancer. However, osimertinib resistance inevitably emerges throughout the treatment course. This study explored the function and mechanism of long noncoding RNA LINC01278 in osimertinib-resistant NSCLC cells. Osimertinib-resistant non-small cell lung cancer (NSCLC) cells were established by treating PC9 and HCC827 cells with increasing doses of osimertinib for over 6 months. LINC01278 expression in parental and drug-resistant cells (PC9-OR and HCC827-OR) was measured by polymerase chain reaction. Cell counting kit 8 assays were used to examine cell viability and half-maximal inhibitory concentration values. The effects of LINC01278 knockdown on cell proliferation and apoptosis were measured by colony formation assays and flow cytometry. A luciferase reporter assay was performed to verify the interaction between LINC01278 and miR-324-3p or the binding ability between miR-324-3p and ZFX. Protein levels of ZFX and apoptotic markers in NSCLC cells were measured by western blotting. As shown by experimental results, LINC01278 was highly expressed in osimertinib-resistant NSCLC cells compared to its expression in parental cells. The silencing of LINC01278 improved the sensitivity of drug-resistant cells towards osimertinib. LINC1278 depletion inhibited osimertinib-resistant cell proliferation while promoting cell apoptosis. LINC01278 interacted with miR-324-3p to regulate ZFX expression. ZFX could be targeted by miR-324-3p in PC9-OR and HCC827-OR cells. ZFX overexpression counteracted the suppressive impact of LINC01278 silencing on the malignant behavior of PC9-OR and HCC827-OR cells. In conclusion, LINC01278 knockdown alleviates osimertinib resistance of NSCLC cells by regulating downstream miR-324-3p and ZFX.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s10616-024-00673-8.</p>","PeriodicalId":10890,"journal":{"name":"Cytotechnology","volume":"77 1","pages":"23"},"PeriodicalIF":2.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11659544/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142876647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}