Progerin Inhibits the Proliferation and Migration of Melanoma Cells by Regulating the Expression of Paxillin
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Progerin overexpression inhibits melanoma cell migration and proliferation by downregulating paxillin via miR-212. This finding suggests progerin as a potential therapeutic target for melanoma treatment.
Area Of Science
- Oncology
- Molecular Biology
- Cell Biology
Background
- Progerin, linked to Hutchinson-Gilford Progeria Syndrome (HGPS), is well-studied in normal cells but its role in cancer remains unclear.
- Melanoma, a prevalent malignancy, presents a significant challenge due to high morbidity and mortality rates.
- Understanding progerin's effects on melanoma is crucial for exploring novel therapeutic strategies.
Purpose Of The Study
- To investigate the therapeutic potential of progerin in melanoma.
- To elucidate the molecular mechanisms by which progerin affects melanoma cell behavior.
Main Methods
- Stable progerin-expressing melanoma cell lines (A375, M14) were established.
- Protein expression (progerin, paxillin, EMT markers) analyzed via Western blot.
- Cell migration, proliferation, and cell cycle assessed using transwell, wound healing, colony formation, CCK-8, and flow cytometry assays.
- MicroRNA expression changes quantified by RT-qPCR.
- Rescue experiments involving paxillin transfection were performed.
Main Results
- Progerin overexpression significantly inhibited melanoma cell migration, proliferation, epithelial-mesenchymal transition (EMT), and cell cycle progression.
- Paxillin expression was decreased in progerin-overexpressing cells.
- Transfection of paxillin partially restored migration, proliferation, and EMT markers in progerin-overexpressing cells, indicating paxillin's role.
- Progerin upregulates miR-212, which in turn downregulates paxillin expression.
Conclusions
- Progerin demonstrates an inhibitory effect on melanoma cell migration and proliferation.
- The miR-212/paxillin signaling pathway mediates progerin's anti-tumor effects in melanoma.
- This study identifies a novel therapeutic avenue targeting the progerin-miR-212-paxillin axis for melanoma treatment.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
Three of the best-understood negative regulators are p53, p21, and retinoblastoma protein (Rb). The regulatory roles of each of these proteins were discovered after faulty copies were found in cells with uncontrolled replication (i.e.,...
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...