Rod-derived Cone Viability Signaling for the Treatment of Inherited Retinal Degenerations

Research center

17 rue Moreau
75012 Paris
José-Alain Sahel


Université Pierre et Marie Curie
Université Pierre et Marie Curie


Phone: 01 53 46 25 48
UMR S 968
Labex Lifesenses


Retinal Degeneration
Redox signaling
Gene therapy


Mei X, Chaffiol A, Kole C, Yang Y, Millet-Puel G, Clérin E, Aït-Ali N, Bennett J, Dalkara D, Sahel JA, Duebel J, Léveillard T. The Thioredoxin Encoded by the Rod-Derived Cone Viability Factor Gene Protects Cone Photoreceptors Against Oxidative Stress. Antioxid Redox Signal. 2016 Jun 1;24(16):909-23. doi: 10.1089/ars.2015.6509. Epub 2016 May 12.

Delyfer MN, Aït-Ali N#, Camara H#, Clérin E#, Korobelnik JF, Sahel JA, Léveillard T#. J Vis Exp. 2013 Aug 14;(78).

AMD Gene Consortium (# Léveillard T one of thye senior authors). Nat Genet. 2013 Apr;45(4):433-9, 439e1-2.

Jaillard C, Mouret A, Niepon ML, Clérin E#, Yang Y, Lee-Rivera I, Aït-Ali N#, Millet-Puel G#, Cronin T, Sedmak T, Raffelsberger W,Kinzel B, Trembleau A, Poch O, Bennett J, Wolfrum U, Lledo PM, Sahel JA, Léveillard T#. Hum Mol Genet. 2012 May 15;21(10):2298-311.

Clérin E#, Wicker N, Mohand-Saïd S, Poch O, Sahel JA, Léveillard T#. BMC Ophthalmol. 2011 Dec 20;11:38.

Delyfer MN, Raffelsberger W, Mercier D, Korobelnik JF, Gaudric A, Charteris DG, Tadayoni R, Metge F, Caputo G, Barale PO, Ripp R, Muller JD, Poch O, Sahel JA, Léveillard T#. PLoS One. 2011;6(12):e28791.

Fields of research

Neurological and psychiatric diseases

Research Theme

The identification of one of the mechanisms leading to a vision loss in patients suffering from inherited degenerative retinal disorders reveals a novel family of signaling genes involved in the regulation of trophic interactions and response to oxidative stress. It represents a potential therapy for these currently untreatable diseases. The Rod-derived Cone Viability Factor is encoded by the Nucleoredoxin-like-1 gene and the Nxnl1-/- mouse experiences a progressive loss of photoreceptor cells. This gene encodes for a trophic protein whose role is to maintain the function and consequently the viability of cone photoreceptors. Interestingly, it also encodes by differential splicing for a second protein product that has the characteristics of thioredoxin-like enzyme and protects the photoreceptors and more specifically its interacting protein partner, the TAU protein, against oxidative damage. This novel signaling pathway potentially links environmental insults to an endogenous neuroprotective response.