Orai1/STIMs modulators in pulmonary vascular diseases

Area of Science:

• Cellular Biology
• Physiology
• Pathology

Background:

• Calcium ions (Ca²⁺) act as crucial secondary messengers regulating diverse cellular functions.
• Orai1 channels are key players in store-operated calcium entry (SOCE), maintaining cellular Ca²⁺ homeostasis.
• Orai1 dysregulation is implicated in severe combined immune deficiency, cancers, and cardiorespiratory diseases like pulmonary arterial hypertension (PAH).

Purpose of the Study:

• To review the regulatory partners of Orai1 channels.
• To elucidate the role of these partners in Orai1-mediated SOCE.
• To understand Orai1 dysregulation in pulmonary circulation and inflammation.

Main Methods:

• Literature review of Orai1 regulatory mechanisms.
• Analysis of Orai1 interactions with STIM proteins and other partners.
• Focus on Orai1's role in physiological and pathological conditions of the pulmonary system.

Main Results:

• Orai1 activation is primarily modulated by STIM proteins, particularly STIM1.
• Numerous other regulatory partners of Orai1 have been identified recently.
• These partners offer insights into SOCE signaling pathways and Orai1's role in disease.

Conclusions:

• Understanding Orai1 regulatory partners enhances our view of SOCE signaling.
• Identifying these partners provides therapeutic targets for Orai1-related diseases.
• Further research into Orai1 partners is crucial for treating pulmonary and inflammatory conditions.