What question did this study set out to answer?

This research aims to explore the role of neuropilin-2 in mitochondrial function and its link to retinal degeneration and cellular senescence.

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March 7, 2026Open Access

Neuropilin-2 Deficiency Promotes Mitochondrial Dysfunction and NAD⁺-Dependent Cellular Senescence in Retinal Degeneration

Key Points

This research aims to explore the role of neuropilin-2 in mitochondrial function and its link to retinal degeneration and cellular senescence.
Investigated the role of neuropilin-2 in retinal pigment epithelium (RPE) cells.
Assessed mitochondrial integrity and NAD+ metabolism in the absence of NRP2.
Evaluated the therapeutic potential of echinacoside in targeting the NRP2-mitochondria-NAD+ axis.
Loss of NRP2 led to significant mitochondrial dysfunction in RPE cells.
Disruption of NAD+ metabolism was observed, contributing to cellular senescence.
Echinacoside treatment showed promise in preventing retinal degeneration by restoring mitochondrial function.

Abstract

NRP2 is a critical regulator of mitochondrial integrity and NAD⁺ metabolism in the RPE. Its loss disrupts metabolic homeostasis, promoting RPE senescence and retinal degeneration. Targeting the NRP2-mitochondria-NAD⁺ axis with echinacoside represents a promising therapeutic strategy for preventing retinal degenerative diseases.

Neuropilin-2 Deficiency Promotes Mitochondrial Dysfunction and NAD⁺-Dependent Cellular Senescence in Retinal Degeneration

Key Points

Abstract

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