TY - JOUR

T1 - Does Background Matter? A Comparative Characterization of Mouse Models of Autosomal Retinitis Pigmentosa rd1 and Pde6b-KO

AU - Чиринскайте, Ангелина Валерьевна

AU - Ротов, Александр Юрьевич

AU - Ермолаева, Мария

AU - Ткаченко, Любовь Александровна

AU - Ваганова, Анастасия Николаевна

AU - Данилов, Лаврентий Глебович

AU - Федосеева, Ксения Николаевна

AU - Костин, Николай Анатольевич

AU - Сопова, Юлия Викторовна

AU - Фирсов, М.Л.

AU - Леонова, Елена Ивановна

PY - 2023/12/6

Y1 - 2023/12/6

N2 - Many retinal degenerative diseases result in vision impairment or permanent blindness due to photoreceptor loss or dysfunction. It has been observed that Pde6b rd1 mice (rd1), which carry a spontaneous nonsense mutation in the pde6b gene, have a strong phenotypic similarity to patients suffering from autosomal recessive retinitis pigmentosa. In this study, we present a novel mouse model of retinitis pigmentosa generated through pde6b gene knockout using CRISPR/Cas9 technology. We compare this Pde6b-KO mouse model to the rd1 mouse model to gain insights into the progression of retinal degeneration. The functional assessment of the mouse retina and the tracking of degeneration dynamics were performed using electrophysiological methods, while retinal morphology was analyzed through histology techniques. Interestingly, the Pde6b-KO mouse model demonstrated a higher amplitude of photoresponse than the rd1 model of the same age. At postnatal day 12, the thickness of the photoreceptor layer in both mouse models did not significantly differ from that of control animals; however, by day 15, a substantial reduction was observed. Notably, the decline in the number of photoreceptors in the rd1 model occurred at a significantly faster rate. These findings suggest that the C3H background may play a significant role in the early stages of retinal degeneration.

AB - Many retinal degenerative diseases result in vision impairment or permanent blindness due to photoreceptor loss or dysfunction. It has been observed that Pde6b rd1 mice (rd1), which carry a spontaneous nonsense mutation in the pde6b gene, have a strong phenotypic similarity to patients suffering from autosomal recessive retinitis pigmentosa. In this study, we present a novel mouse model of retinitis pigmentosa generated through pde6b gene knockout using CRISPR/Cas9 technology. We compare this Pde6b-KO mouse model to the rd1 mouse model to gain insights into the progression of retinal degeneration. The functional assessment of the mouse retina and the tracking of degeneration dynamics were performed using electrophysiological methods, while retinal morphology was analyzed through histology techniques. Interestingly, the Pde6b-KO mouse model demonstrated a higher amplitude of photoresponse than the rd1 model of the same age. At postnatal day 12, the thickness of the photoreceptor layer in both mouse models did not significantly differ from that of control animals; however, by day 15, a substantial reduction was observed. Notably, the decline in the number of photoreceptors in the rd1 model occurred at a significantly faster rate. These findings suggest that the C3H background may play a significant role in the early stages of retinal degeneration.

KW - Animals

KW - Disease Models, Animal

KW - Electroretinography

KW - Humans

KW - Mice

KW - Mice, Inbred C3H

KW - Retina/pathology

KW - Retinal Degeneration/pathology

KW - Retinitis Pigmentosa/pathology

KW - pde6b

KW - electroretinography

KW - Pde6b-KO

KW - retinitis pigmentosa

KW - β-subunit of phosphodiesterase

UR - https://www.mendeley.com/catalogue/1127a542-d74c-3b93-9890-5fd3865512e9/

U2 - 10.3390/ijms242417180

DO - 10.3390/ijms242417180

M3 - Article

C2 - 38139011

VL - 24

JO - International Journal of Molecular Sciences

JF - International Journal of Molecular Sciences

SN - 1422-0067

IS - 24

M1 - 17180

ER -