Modulation of cellular viability

Provided herein are methods for enhancing survival of a neuron, for inhibiting degeneration of a neuron, and for inhibiting abnormal protein accumulation in a neuron, optionally a motor neuron, comprising, consisting or consisting essentially of increasing the level of cyclin F in the neuron regardless of the neuron's level or activity of endogenous cyclin F. Optionally the neuron is in a subject with a neurodegenerative condition or at risk of developing a neurodegenerative condition, typically a neurodegenerative condition associated with a neuronal TDP-43 proteinopathy.