Journals / Turkish Journal of Pharmaceutical Sciences / 2018 / Cilt: 15 - Sayı: 1

Calcium Mobilization and Inhibition of Akt Reduced the Binding of PEO-1 Cells to Fibronectin

Ca2+ Mobilizasyonu ve Akt İnhibisyonu ile PEO-1 Hücrelerinin Fibronektine Bağlanmasında Azalma

Pages
50–56
Publication Date
2022-11-05
DOI
—
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⚡ TL;DR(Too Long; Didn't Read)

The binding rate of PEO-1 cells to fibronectin was also investigated in the presence of either different concentrations of cardamonin,which inhibits the accumulation of β-catenin, or different concentrations of FPA 124, which is a specific inhibitor for the PKB/Akt signal pathway,using RTCA.Results: RTCA analysis results showed that increasing [Ca2+]i through leakage of the calcium pool was strongly effective on PEO-1 cell binding tofibronectin.

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: To investigate the effects of intracellular calcium (Ca2+) mobilization, β-catenin and Akt signal pathways after the binding of metastaticovarian cells to fibronectin.Materials and Methods: The expression levels of α4β1 and αvβ6 integrin were determined using α4, β1, αv, and β6 antibodies using flow cytometryon PEO-1 cells.
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Key Findings & Data:The effect of [Ca2+]i on cell adhesion capacity was investigated using RTCA after stimulating PEO-1 cells using thapsigargin andtunicamycin.
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Conclusion & Impact:The binding rate of PEO-1 cells to fibronectin was also investigated in the presence of either different concentrations of cardamonin,which inhibits the accumulation of β-catenin, or different concentrations of FPA 124, which is a specific inhibitor for the PKB/Akt signal pathway,using RTCA.Results: RTCA analysis results showed that increasing [Ca2+]i through leakage of the calcium pool was strongly effective on PEO-1 cell binding tofibronectin.
🔬Design:Lab & Field Experiment
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: To investigate the effects of intracellular calcium (Ca2+) mobilization, β-catenin and Akt signal pathways after the binding of metastaticovarian cells to fibronectin.Materials and Methods: The expression levels of α4β1 and αvβ6 integrin were determined using α4, β1, αv, and β6 antibodies using flow cytometryon PEO-1 cells. The effect of [Ca2+]i on cell adhesion capacity was investigated using RTCA after stimulating PEO-1 cells using thapsigargin andtunicamycin. The binding rate of PEO-1 cells to fibronectin was also investigated in the presence of either different concentrations of cardamonin,which inhibits the accumulation of β-catenin, or different concentrations of FPA 124, which is a specific inhibitor for the PKB/Akt signal pathway,using RTCA.Results: RTCA analysis results showed that increasing [Ca2+]i through leakage of the calcium pool was strongly effective on PEO-1 cell binding tofibronectin. Extracellular calcium influx also reduced the binding of PEO-1 cells. Cell binding to fibronectin was also inhibited with a ratio of 64%in the presence of 100 µM cardamonin compared with untreated control cells. Finally, it was found that PKB/Akt inhibition with 15 µM FPA 124decreased the binding of PEO-1 cells to fibronectin with a ratio of 88% compared with untreated control cells.Conclusion: PEO-1 cell binding to fibronectin via integrins could be related to intracellular Ca2+ mobilization and Akt signaling.

Özet

Amaç: Metastatik ovaryum kanser hücrelerinin fibronektine bağlanmasından sonra, hücre içi Ca2+ mobilizasyonu, β-katenin ve Akt sinyal yollarının etkilerinin araştırılmasıdır. Gereç ve Yöntemler: α4β1 ve αvβ6 integrinlerin ekspresyon düzeyleri α4, β1, αv vçe β6 antikorları kullanılarak akım sitometrisi ile PEO-1 hücrelerinde tespit edilmiştir. [Ca2+]’un hücre adezyon kapasitesine etkisi, PEO-1 hücrelerinin tapsigargin ve tunikamisin ile uyarılmasından sonra RTCA kullanılarak araştırıldı. PEO-1 hücrelerinin fibronektine bağlanma oranı β-kateninin toplanmasını inhibe eden farklı kardamonin konsantrasyonları varlığında veya PKB/Akt sinyal yolu için spesifik inhibitör olan FPA 124’ün farklı konsantrasyonları için RTCA kullanılarak araştırıldı. Bulgular: RTCA analiz sonuçları kalsiyum depolarından sızmasıyla artan [Ca2+]’un PEO-1 hücrelerinin fibronektine bağlanmasını güçlü bir şekilde etkilediğini göstermiştir. Hücre dışı kalsiyum akımı PEO-1 hücrelerinin bağlanmasını azaltmıştır. 100 µM kardamonin varlığında muamele edilmemiş kontrol hücrelerine göre hücrenin fibronektine bağlanması %64 oranında inhibe olmuştur. Son olarak, 15 µM FPA 124 ile PKB/Akt inhibisyonu da PEO-1 hücrelerinin fibronektine bağlanmasını %88 oranında düşürdüğü bulunmuştur. Sonuç: PEO-1 hücrelerinin integrinler aracılığı ile fibronektine bağlanmasının hücre içi Ca2+ mobilizasyonu ve Akt sinyali ile ilgili olabilir.

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Cite This Article

İNCESU, Z., APAYDIN, E., KILIÇASLAN, S. M. S., AYRIM, A. (2022). Calcium Mobilization and Inhibition of Akt Reduced the Binding of PEO-1 Cells to Fibronectin. Turkish Journal of Pharmaceutical Sciences, Cilt: 15 - Sayı: 1, 50–56. https://ajindex.com/articles/613871

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References (12)

  1. Manso AM, Kang SM, Ross RS. Integrins, Focal Adhesions and Cardiac Fibroblasts. J Investig Med. 2009;57:856-860
  2. Aoudjit F, Vuori K. Integrin Signalling in Cancer Cell Survival and Chemoresistance. Chemotherapy Res and Pract. 2012;2012:1-16
  3. Hirohashi S, Kanai Y. Cell adhesion system and human cancer morphogenesis. Cancer Sci. 2003;94:575-581. 4. van den Hoogen C, van der Horst G, Cheung H, Buijs JT, Pelger RC, van der Pluijm G. Integrin αv expression is required for the acquisition of a metastatic stem/progenitor cell phenotype in human prostate cancer. Am J Pathol. 2011;179:2559-2568
  4. Paoli P, Giannoni E, Chiarugi P. Anoikis molecular pathways and its role in cancer progression. Biochimica et Biophysica Acta-Molecular Cell Research. 2013;1833:3481-3498
  5. Lu JG, Li Y, Li L, Kan X. Overexpression of osteopontin and integrin αv in laryngeal and hypopharyngeal carcinomas associated with differentiation and metastasis. J Cancer Res Clin Oncol. 2011;137:1613-1618
  6. Puiffe ML, Le Page C, Filali-Mouhim A, Zietarska M, Ouellet V, Tonin PN, Chevrette M, Provencher DM, Mes-Masson AM. Characterization of ovarian cancer ascites on cell invasion, proliferation, spheroid formation, and gene expression in an in vitro model of epithelial ovarian cancer. Neoplasia. 2007;9:820-829
  7. Kenny HA, Kaur S, Coussens LM, Lengyel E. The initial steps of ovarian cancer cell metastasis are mediated by MMP-2 cleavage of vitronectin and fibronectin. J Clin Invest. 2008;118:1367-1379
  8. Bodnar L, Stanczak A, Cierniak S, Smoter M, Cichowicz M, Kozlowski W, Szczylik C, Wieczorek M, Lamparska-Przybysz M. Wnt/β-catenin pathway as a potential prognostic and predictive marker in patients with advanced ovarian cancer. J of Ovarian Research. 2014;7:16-26
  9. Hur J, Jeong S. Multitasking β-catenin: From adhesion and transcription to RNA regulation. Animal Cell Systems. 2013;17:299-305
  10. Uchino M, Kojima H, Wada K. Nuclear beta-catenin and CD44 upregulation characterize invasive cell populations in non-aggressive MCF-7 breast cancer cell. BMC Cancer. 2010;10:414-417
  11. Chau WK, Ip CK, Mak AS. C-Kit mediates chemoresistance and tumorinitiating capacity of ovarian cancer cells through activation of Wnt/betacatenin-ATP-binding cassette G2 signaling. Oncogene. 2012;10:103-107
  12. Tran NL, Adams DG, Vaillancourt RR, Heimark RL. Signal transduction from N-cadherin increases Bcl-2. Regulation of the phosphatidylinositol 3-kinase/Akt pathway by homophilic adhesion and actin cyto