Table 1 Statistical analysis of clock and phagocytosis gene mRNA rhythmicity in ARPE-19 dispersed cells and monolayers.

From: Rev-Erbα and Photoreceptor Outer Segments modulate the Circadian Clock in Retinal Pigment Epithelial Cells

Non-linear regression analysis

1-way ANOVA

Gene

P value

Period (h)

Acrophase (h)

Amplitude

P value

F value

Dispersed ARPE-19 cells

Clock genes

ARNTL

0.0003

21.10 ± 0.98

11.01 ± 1.04

0.45 ± 0.09

<0.0001

18.11

CLOCK

0.1493

22.24 ± 2.06

12.61 ± 2.14

0.18 ± 0.08

0.0002

4.07

CRY1

0.0432

28.00 ± 2.84

27.14 ± 1.46

0.21 ± 0.07

<0.0001

4.99

CRY2

0.0072

28.00 ± 2.30

25.90 ± 1.20

0.39 ± 0.11

0.0056

2.73

PER1

0.0007

28.00 ± 1.92

22.40 ± 1.09

0.23 ± 0.05

<0.0001

5.09

PER2

<0.0001

26.47 ± 1.33

21.79 ± 0.87

0.47 ± 0.09

0.0140

2.39

REV-ERBα

<0.0001

22.86 ± 0.77

17.64 ± 0.60

0.53 ± 0.07

<0.0001

6.82

Phagocytosis genes

GAS6

0.0699

20.00 ± 1.38

7.11 ± 1.86

0.17 ± 0.06

0.0064

2.68

ITGB5

0.0021

20.00 ± 0.96

10.46 ± 1.14

0.27 ± 0.06

<0.0001

4.84

LAMP1

0.0265

28.00 ± 2.70

24.24 ± 1.44

0.28 ± 0.09

0.0108

2.48

MFGE8

0.0112

28.00 ± 2.40

26.39 ± 1.24

0.18 ± 0.05

0.0002

4.05

PROS1

0.0029

28.00 ± 2.10

0.62 ± 2.36

0.42 ± 0.11

<0.0001

12.69

PTK2

0.6378

28.00 ± 6.44

2.38 ± 7.23

0.07 ± 0.06

0.0007

3.55

ARPE-19 monolayers

Clock genes

ARNTL

0.0234

20.48 ± 1.57

12.63 ± 1.64

0.36 ± 0.11

0.0066

2.60

CLOCK

0.1745

27.94 ± 3.49

10.69 ± 2.55

0.28 ± 0.12

0.3330

1.17

CRY1

0.0187

20.54 ± 1.11

6.36 ± 1.44

0.26 ± 0.08

0.0023

2.97

CRY2

0.1784

26.28 ± 2.64

20.93 ± 1.83

0.24 ± 0.11

0.0485

1.89

PER1

0.0025

26.59 ± 1.78

18.29 ± 1.29

0.53 ± 0.13

0.0349

2.01

PER2

0.0005

21.86 ± 1.07

19.39 ± 0.84

0.85 ± 0.19

0.0611

1.84

REV-ERBα

0.0024

20.84 ± 1.11

14.70 ± 1.12

0.40 ± 0.10

0.0165

2.27

Phagocytosis genes

GAS6

0.5007

28.00 ± 5.11

24.45 ± 2.79

0.12 ± 0.08

0.5375

0.94

ITGB5

0.0295

28.00 ± 2.75

23.07 ± 1.52

0.27 ± 0.09

0.0038

2.87

LAMP1

0.0479

23.61 ± 1.70

11.29 ± 1.73

0.43 ± 0.15

0.1712

1.44

MFGE8

0.1796

28.00 ± 3.42

21.93 ± 2.01

0.21 ± 0.09

0.5430

0.94

PROS1

0.0030

28.00 ± 2.04

19.38 ± 1.35

0.44 ± 0.11

0.0033

2.84

PTK2

0.0219

28.00 ± 2.40

21.23 ± 1.45

0.25 ± 0.08

0.0044

2.74

  1. Data were fitted to the equation y = y0 + ccos[2π(t − φ)/τ] by non-linear regression. Bold values represent p < 0.05.