Journal: Nature Communications
Article Title: TBL1X/TBL1XR1 govern β-cell identity through a PAX6-containing gene regulatory network
doi: 10.1038/s41467-026-72077-5
Figure Lengend Snippet: a Scheme for the generation of an inducible β-cell-specific TBL1X and TBL1XR1 knockout. b Random fed blood glucose levels over time in iTBL/RβKO ( n = 9) and control ( n = 9) mice on HFD. c Total pancreas insulin content normalized to protein levels in iTBL/RβKO and control mice 4 and 11 weeks after tamoxifen administration. n = 3 for 4w control and iTBL/RβKO mice, n = 6 for 11w control mice, n = 4 for 11w iTBL/RβKO mice. d , e Blood glucose ( d ) and plasma insulin ( e ) levels during an oral glucose tolerance test after 22 weeks of HFD. Corresponding area under the curve in iTBL/RβKO ( n = 8) and control ( n = 9) mice ( d , right). f , g Relative mRNA expression determined by qPCR in pancreatic islets of iTBL/RβKO and control mice of Tbl1x and Tbl1xr1 ( f ) and islet genes ( g ). Control mice Tbl1x , Tbl1xr1 , Ins1 , Ins2 , Nkx6.1 , Slc2a2 , Mafa , Pdx1 , Pax6 , Ucn3 : n = 9, control mice ChgA , Ngn3 , Ldha , Hk1 : n = 8, iTBL/RβKO mice Tbl1x , Ngn3 , Ldha , Hk1 : n = 7, iTBL/RβKO mice Tbl1xr1 , Ins1 , Ins2 , Slc2a2 , Mafa n = 6, iTBL/RβKO mice Nkx6.1 , Pdx1 , Pax6 , Ucn3 , ChgA : n = 5. h α/β-cell mass ratio of pancreatic islets from iTBL/RβKO ( n = 4) and control mice ( n = 4) on HFD, 24 weeks after knockout induction. i Representative immunofluorescent staining of insulin + (blue, β-cells) and glucagon + (red, α-cells) cells of paraffin-embedded pancreas from iTBL/RβKO and control mice on HFD, 24 weeks after knockout induction. Each point represents one mouse. Data are represented as mean ± SEM. The following statistical tests were applied: two-sided student’s t test ( d – Area under the curve, f – h ) and 2-way ANOVA with Šidák’s multiple comparison post hoc test ( b – d – time course, e ). Source data are provided as a Source Data file.
Article Snippet: The following TaqMan probes were used: Tbp - Mm01277042_m1, Tbl1x - Mm01222202_m1, Tbl1xr1 - Mm01283877_m1, Ins1 - Mm01259683_g1, Ins2 - Mm00731595_gH, Nkx6.1 - Mm00454961_m1, Slc2a2 - Mm00454961_m1, Mafa - Mm00845206_s1, Pdx1 - Mm00435565_m1, Pax6 - Mm00443081_m1, Ucn3 - Mm00453206_s1, ChgA - Mm00514341_m1, Ngn3 - Mm00437606_s1, Ldha - Mm01612132_g1, Hk1 - Mm00439344_m1, TBP - Hs00427620_m1, TBL1X - Hs00959540_m1, TBL1XR1 - Hs00226564_m1.
Techniques: Knock-Out, Control, Clinical Proteomics, Expressing, Staining, Comparison
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