Journals / Türk Hijyen ve Deneysel Biyoloji Dergisi / 2022 / Cilt: 79 - Sayı: 1

Hyperglycemia increases Ca2+ realese activated Ca2+ current (ICRAC) in RBL-1 cells

Hiperglisemi RBL-1 hücrelerinde Ca2+ salınımı ile aktive olan Ca2+ akımlarını (ICRAC) arttırır

Pages
71–80
Publication Date
2022-11-06
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Our findings reveal that the SOCE pathway may have an important role in the disturbances in Ca2+ homeostasis and Ca2+ content of ER/SR stores encountered in diabetic pathologies.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objective: Although different types of currents have been defined as store-operated Ca2+ entry (SOCE), the best characterized of these is Ca2+ release-activated Ca2+ currents (ICRAC).
📊
Key Findings & Data:The SOCE pathway is an important way to generate cytosolic Ca2+ signals that regulate various biological processes.
💡
Conclusion & Impact:Conclusion: Our findings reveal that the SOCE pathway may have an important role in the disturbances in Ca2+ homeostasis and Ca2+ content of ER/SR stores encountered in diabetic pathologies.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Although different types of currents have been defined as store-operated Ca2+ entry (SOCE), the best characterized of these is Ca2+ release-activated Ca2+ currents (ICRAC). The SOCE pathway is an important way to generate cytosolic Ca2+ signals that regulate various biological processes. Abnormal SOCE appears to be one of the underlying causes of several diseases, particularly allergies, diabetes, inflammation, and cancer. In this study, the effects of hyperglycemia on SOCE activity were investigated by electrophysiological methods. Methods: In this study, rat basophilic leukemia-1 (RBL-1) cells were grown using DMEM solutions with high glucose (HG, 50mM) and normal glucose (5.5mM) concentrations. Following 72 h incubation period, SOCE activity was measured by Fura-2 based Ca2+ imaging technique and ICRAC currents recorded by voltage clamp method. Results: ICRAC current measurements were performed by the patch-clmap method and Fura-2 based Ca2+ imaging methods. For positive control experiments, using the PYR6 (SOCE blocker), it was confirmed that the currents were through the SOCE pathway. In addition, it was determined by two different methods that hyperglycemia significantly increased SOCE activity in RBL-1 cells compared to control values. Conclusion: Our findings reveal that the SOCE pathway may have an important role in the disturbances in Ca2+ homeostasis and Ca2+ content of ER/SR stores encountered in diabetic pathologies. Although these findings at the cellular level are limited, it is thought that they will make great contributions to future studies.

Özet

Amaç: Depo bağımlı Ca2+ girişi (SOCE) olarak farklı türde akımlar tanımlanmış olsa da bunlar arasında en iyi bilineni Ca2+ salınımı ile aktive olan Ca2+ akımlarıdır (ICRAC). SOCE yolağı çeşitli biyolojik süreçleri düzenleyen hücre içi Ca2+ ([Ca2+]i) sinyalleri oluşturmak için önemli bir yoldur. Anormal SOCE, özellikle alerji, diyabet, yangı ve kanseri içeren birçok çeşitli hastalık tipinin altında yatan önemli sebeplerden biri olarak görülmektedir. Bu çalışmada, hipergliseminin SOCE aktivitesi üzerine olan etkileri elektrofizyolojik yöntemlerle incelenmiştir. Yöntem: Bu çalışmada, sıçan bazofilik lösemi-1 (RBL- 1) hücreleri yüksek glikoz (YG, 50mM) ve normal glikoz (5.5mM) derişimine sahip DMEM solüsyonları kullanılarak çoğaltılmıştır. RBL-1 hücreleri yeterli sayıya ulaşmasının ardından 72 saat süreyle yüksek glikoz ortamına maruz bırakılmıştır. Bu süreyi takiben hücrelerden Fura-2 tabanlı Ca2+ görüntüleme tekniği ile SOCE aktivitesi ve voltaj kenetleme yöntemiyle ICRAC akımları ölçülmüştür. Bulgular: ICRAC akım ölçümleri patch-clmap ve Fura-2 tabanlı Ca2+ görüntüleme yöntemleriyle gerçekleştirilmiştir. Pozitif kontrol deneyler için PYR6 (SOCE blokörü) kullanılarak akımların SOCE yolağı üzerinden olduğu doğrulanmıştır. Ayrıca hipergliseminin RBL-1 hücrelerinde SOCE aktivitesini kontrol değerlerine göre istatistiksel olarak anlamlı derecede arttırdığı iki farklı yöntemle tespit edilmiştir. Sonuç: Bulgularımız diyabetik patolojilerde karşılaşılan Ca2+ homeostazındaki ve ER/SR depolarının Ca2+ içeriğindeki bozulmalarda SOCE yolağı ile ilgili proteinlerin önemli bir rolü olabileceğini ortaya koymaktadır. Hücre düzeyinde elde edilen bu bulgular sınırlı olsa da ileride geliştirilecek olan çalışmalara büyük katkılar sağlayacağı düşünülmektedir.

🔖

Cite This Article

GÖKÇE, Y., RAHMAN, T., YARAŞ, N. (2022). Hyperglycemia increases Ca2+ realese activated Ca2+ current (ICRAC) in RBL-1 cells. Türk Hijyen ve Deneysel Biyoloji Dergisi, Cilt: 79 - Sayı: 1, 71–80. https://ajindex.com/articles/624927

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (16)

  1. Berridge MJ, Lipp P, Bootman MD. The versatility and universality of calcium signalling. Nat Rev Mol Cell Biol, 2000; 1(1): 11–21
  2. Amcheslavsky A, Yeromin AV, Penna A, Cahalan MD. Store-operated calcium channels. Encycl Biol Chem Second Ed, 2013; (307): 314–20
  3. Parekh AB, Putney JW. Store-operated calcium channels. Physiol Rev, 2005; 85(2): 757-810
  4. Hunton DL, Zou L, Pang Y, Marchase RB, Dacia L, Zou L, et al. Adult rat cardiomyocytes exhibit capacitative calcium entry. Am J Physiol Heart Circ Physiol, 2004; 0005: 1124–32
  5. Venkatachalam K, van Rossum DB, Patterson RL, Ma HT, Gill DL. The cellular and molecular basis of store-operated calcium entry. Nat Cell Biol, 2002; 4(11): E263-72
  6. Parekh AB. Store-operated CRAC channels: function in health and disease. Nat Rev Drug Discov, 2010; 9(5): 399-410
  7. Tian C, Du L, Zhou Y, Li M. Store-operated CRAC channel inhibitors: opportunities and challenges. Future Med Chem, 2016; 8(7): 817-32
  8. Wang J, Fu J, Li J, Wang Y, Tang L, Bai S, et al. Enhanced store-operated Ca 2 + entry in high glucose-cultured neonatal and adult diabetic rat cardiomyocytes. Int J Cli Exp Pathol, 2017; 10(2): 877–89
  9. Back SH, Kaufman RJ. Endoplasmic reticulum stress and type 2 diabetes. Annu Rev Biochem, 2012; (81): 767-93
  10. Chaudhari S, Wu P, Wang Y, Ding Y, Yuan J, Begg M, et al. High glucose and diabetes enhanced store- operated Ca 2+ entry and increased expression of its signaling proteins in mesangial cells. Am J Physiol Physiol, 2014; 306(9): F1069–80
  11. Zhang IX, Ren J, Vadrevu S, Raghavan M, Satin LS. ER stress increases store-operated Ca2+ entry (SOCE) and augments basal insulin secretion in pancreatic beta cells. J Biol Chem, 2020; 295(17): 5685-70
  12. Bird GS, DeHaven WI, Smyth JT, Putney JW. Methods for studying store-operated calcium entry. Methods, 2008; 46(3): 204-12
  13. Hendron E, Wang X, Zhou Y, Cai X, Goto JI, Mikoshiba K, et al. Potent functional uncoupling between STIM1 and Orai1 by dimeric 2-aminodiphenyl borinate analogs. Cell Calcium, 2014; 56(6): 482-92
  14. Putney JW, Steinckwich-Besançon N, Numaga- Tomita T, Davis FM, Desai PN, D’Agostin DM, et al. The functions of store-operated calcium channels. Biochim Biophys Acta Mol Cell Res, 2017; 1864(6): 900-06
  15. Battiprolu PK, Gillette TG, Wang ZV, Lavandero S, Hill JA. Diabetic cardiomyopathy: mechanisms and therapeutic targets. Drug Discov Today Dis Mech, 2010; 7(2): 135-43
  16. Putney JW. A model for receptor-regulated calcium entry. Ce