Retina metabolism and metabolism in the pigmented epithelium: a busy intersection

JB Hurley - Annual review of vision science, 2021 - annualreviews.org
The outer retina is nourished from the choroid, a capillary bed just inside the sclera. O2,
glucose, and other nutrients diffuse out of the choroid and then filter through a monolayer of …

Photoreceptor metabolic reprogramming: current understanding and therapeutic implications

WW Pan, TJ Wubben, CG Besirli - Communications biology, 2021 - nature.com
Acquired and inherited retinal disorders are responsible for vision loss in an increasing
proportion of individuals worldwide. Photoreceptor (PR) death is central to the vision loss …

Aerobic glycolysis is essential for normal rod function and controls secondary cone death in retinitis pigmentosa

L Petit, S Ma, J Cipi, SY Cheng, M Zieger, N Hay… - Cell reports, 2018 - cell.com
Aerobic glycolysis accounts for∼ 80%–90% of glucose used by adult photoreceptors (PRs);
yet, the importance of aerobic glycolysis for PR function or survival remains unclear. Here …

Aerobic glycolysis in the retina: functional roles of pyruvate kinase isoforms

RVS Rajala - Frontiers in Cell and Developmental Biology, 2020 - frontiersin.org
One hundred years ago, Otto Heinrich Warburg observed that postmitotic retinal cells are the
highest oxygen-consuming cells in the body. He compared these cells to actively growing …

Potential therapeutic strategies for photoreceptor degeneration: the path to restore vision

F Karamali, S Behtaj, S Babaei-Abraki… - Journal of translational …, 2022 - Springer
Photoreceptors (PRs), as the most abundant and light-sensing cells of the neuroretina, are
responsible for converting light into electrical signals that can be interpreted by the brain. PR …

Tribbles homolog 3-mediated targeting the AKT/mTOR axis in mice with retinal degeneration

IV Saltykova, A Elahi, PM Pitale, OS Gorbatyuk… - Cell Death & …, 2021 - nature.com
Various retinal degenerative disorders manifest in alterations of the AKT/mTOR axis. Despite
this, consensus on the therapeutic targeting of mTOR in degenerating retinas has not yet …

Selective knockdown of hexokinase 2 in rods leads to age-related photoreceptor degeneration and retinal metabolic remodeling

R Zhang, W Shen, J Du, MC Gillies - Cell Death & Disease, 2020 - nature.com
Photoreceptors, the primary site of phototransduction in the retina, require energy and
metabolites to constantly renew their outer segments. They preferentially consume most …

Pyruvate kinase M2 regulates photoreceptor structure, function, and viability

A Rajala, Y Wang, RS Brush, K Tsantilas… - Cell death & …, 2018 - nature.com
Abstract Pyruvate kinase M2 (PKM2) is a glycolytic enzyme that is expressed in cancer cells.
Its role in tumor metabolism is not definitively established, but investigators have suggested …

The function of lactate dehydrogenase A in retinal neurons: implications to retinal degenerative diseases

A Rajala, MA Bhat, K Teel, GK Gopinadhan Nair… - PNAS …, 2023 - academic.oup.com
The postmitotic retina is highly metabolic and the photoreceptors depend on aerobic
glycolysis for an energy source and cellular anabolic activities. Lactate dehydrogenase A …

The symbiotic relationship between the neural retina and retinal pigment epithelium is supported by utilizing differential metabolic pathways

T Sinha, MI Naash, MR Al-Ubaidi - Iscience, 2020 - cell.com
The neural retina and retinal pigment epithelium (RPE) maintain a symbiotic metabolic
relationship, disruption of which leads to debilitating vision loss. The current study was …