Data on hypoxia-induced VEGF, leptin and NF-kB p65 expression

Area of Science:

• Cell Biology
• Endocrinology
• Molecular Biology

Background:

• Hypoxia, a state of low oxygen, influences various cellular functions.
• Leptin and VEGF are crucial adipokines involved in metabolism and angiogenesis.
• NF-κB is a key transcription factor regulating inflammatory and stress responses.

Purpose of the Study:

• To investigate the role of intracellular calcium and NF-κB in hypoxia-induced secretion of leptin, VEGF, IL-6, and adiponectin.
• To elucidate the molecular mechanisms linking hypoxia to adipokine regulation in human adipocytes.

Main Methods:

• Human adipocytes were subjected to hypoxic conditions (0.5-1.5% oxygen).
• Cells were treated with BAPTA-AM (calcium chelator) or SN50 (NF-κB inhibitor).
• Gene expression analysis was performed using RNA isolation and PCR.

Main Results:

• Hypoxia induced the expression of VEGF and leptin in human adipocytes.
• Treatment with BAPTA-AM reduced hypoxia-induced VEGF and leptin expression.
• Hypoxia also induced NF-κB p65 expression, suggesting its involvement.

Conclusions:

• Intracellular calcium and NF-κB signaling are critical regulators of hypoxia-induced leptin and VEGF secretion in human adipocytes.
• These findings provide insights into the cellular response to low oxygen environments.