Lung Cancer Cell
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Biologia ◽  
2021 ◽  
Author(s):  
Seyyedeh Mahdokht Maddah ◽  
Golaleh Mostafavi ◽  
Mahlagha Amin Malek ◽  
Mohadese Anbarestani ◽  
Yasin Sharif ◽  
...  

PLoS Genetics ◽  
2021 ◽  
Vol 17 (11) ◽  
pp. e1009899
Author(s):  
Miao Chen ◽  
Qian Long ◽  
Melinda S. Borrie ◽  
Haohui Sun ◽  
Changlin Zhang ◽  
...  

The robust proliferation of cancer cells requires vastly elevated levels of protein synthesis, which relies on a steady supply of aminoacylated tRNAs. Delivery of tRNAs to the cytoplasm is a highly regulated process, but the machinery for tRNA nuclear export is not fully elucidated. In this study, using a live cell imaging strategy that visualizes nascent transcripts from a specific tRNA gene in yeast, we identified the nuclear basket proteins Mlp1 and Mlp2, two homologs of the human TPR protein, as regulators of tRNA export. TPR expression is significantly increased in lung cancer tissues and correlated with poor prognosis. Consistently, knockdown of TPR inhibits tRNA nuclear export, protein synthesis and cell growth in lung cancer cell lines. We further show that NXF1, a well-known mRNA nuclear export factor, associates with tRNAs and mediates their transport through nuclear pores. Collectively, our findings uncover a conserved mechanism that regulates nuclear export of tRNAs, which is a limiting step in protein synthesis in eukaryotes.


Author(s):  
Tina Nasrin ◽  
Mousumi Patra ◽  
Sayed Modinur Rahaman ◽  
Tapan Kumar Das ◽  
Soni Shaikh

Background: The World Health Organization (WHO) estimated that the number of cancer-related deaths was 9.6 million in 2018 and 2.09 million deaths occurred by lung cancer. The American Institute for Cancer Research (AICR) also observed gender preferences in lung cancer, common in men than women. Since the past decade, nanoparticles have now been widely documented for their anti-cancer properties, which signifies that the development of nanotechnology would be a future diagnosis and treatment strategy for lung cancer. Objective: The current study aimed to investigate the role of biosynthesized CdS nanoparticles (CdS NPs) in lung cancer cells (A549). Therefore, whether the CdS NP induces lung cancer cell death and the underlying mechanism is yet to be elucidated. Methods: Literature was searched from various archives of biomedical and life science journals. Then, CdS NPs were biosynthesized and characterized by traditional and cutting-edge protocols. The CdS NP-mediated cell death was elucidated following standard protocols. Results : CdS NPs induced cytotoxicity towards A549 cells in a dose-dependent manner. However, such a death mechanism does not go through necrosis. Intracellular reactive oxygen species (ROS) accumulation and mitochondrial membrane depolarization demonstrated that cell death is associated with intracellular ROS production. Furthermore, increased sub-G1 population, Bax expression, and decreased Bcl-2 expression revealed that the death was caused by apoptosis. Conclusion: CdS NPs promote apoptosis-mediated lung cancer cell death through ROS production.


Author(s):  
M. Afrin Nisha ◽  
S. Preetha ◽  
J. Selvaraj ◽  
G. Sridevi

Background: Kabasura kudineer is widely known for its anticancer efficiency. Kabasura kudineer is a customary formulation used by siddha practitioners for effectively managing common respiratory illness. Herbal medicines are acknowledged as a great approach to lung cancer therapy. Aim of the study is to know about the anticancer property of Kabasura kudineer extract on inflammatory cytokines IL-6 and TNF-α in lung cancer cell line (A549). Materials and Methods: Human lung cancer cell line (A549) was purchased from National Centre for Cell Sciences (NCCS), Pune, India. Cell viability test was done by MTT assay. Gene expression analysis was done by Real Time-PCR. The obtained data were analysed statistically by one-way analysis of variance and Duncan’s multiple range test with Graph Pad Prism version 5 to analyse the significance. The significance was considered at p<0.05 level in Duncan’s test. Results and Discussion: Kabasura kudineer caused a marked increase in cell death in dose dependent manner. AT the end of 48 hours, maximum inhibition was at 400 and 500 μg/ml. Kabasura kudineer extract reduced the expression of IL-6 and TNF-α compared to the control cells. Conclusion: This study concluded that Kabasura kudineer extract has anticancer activity on lung cancer cell lines (A549).


2021 ◽  
pp. 100173
Author(s):  
Divya Sebastian ◽  
K. Gowrishankar ◽  
S. Ignacimuthu ◽  
A.J. Renilda Sophy ◽  
R. Vidhya ◽  
...  

Cell Reports ◽  
2021 ◽  
Vol 37 (6) ◽  
pp. 109979
Author(s):  
Aishwarya Payapilly ◽  
Ryan Guilbert ◽  
Tine Descamps ◽  
Gavin White ◽  
Peter Magee ◽  
...  

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