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A sleep-active basalocortical pathway crucial for generation and maintenance of chronic pain

Nature Neuroscience volume 26, pages 458–469 (2023)Cite this article

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Abstract

Poor sleep is associated with the risk of developing chronic pain, but how sleep contributes to pain chronicity remains unclear. Here we show that following peripheral nerve injury, cholinergic neurons in the anterior nucleus basalis (aNB) of the basal forebrain are increasingly active during nonrapid eye movement (NREM) sleep in a mouse model of neuropathic pain. These neurons directly activate vasoactive intestinal polypeptide-expressing interneurons in the primary somatosensory cortex (S1), causing disinhibition of pyramidal neurons and allodynia. The hyperactivity of aNB neurons is caused by the increased inputs from the parabrachial nucleus (PB) driven by the injured peripheral afferents. Inhibition of this pathway during NREM sleep, but not wakefulness, corrects neuronal hyperactivation and alleviates pain. Our results reveal that the PB–aNB–S1 pathway during sleep is critical for the generation and maintenance of chronic pain. Inhibiting this pathway during the sleep phase could be important for treating neuropathic pain.

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Fig. 1: Pyramidal neurons and VIP interneurons are hyperactive during NREM sleep in S1 of mice with neuropathic pain.
Fig. 2: Silencing VIP INs during NREM sleep prevents S1 hyperactivation and nociceptive allodynia.
Fig. 3: Monosynaptic connectivity from basal forebrain to VIP INs in S1.
Fig. 4: Enhanced aNB→S1 cholinergic inputs during NREM sleep in neuropathic pain.
Fig. 5: Silencing aNB→S1 projections during NREM sleep prevents S1 plasticity and pain chronicity.
Fig. 6: Activation of PB→aNB→S1 circuits during NREM sleep drives the development of chronic pain.
Fig. 7: The sleep phase-targeted VIP inhibition reverses the established chronic neuropathic pain.

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Data availability

All data are available in the main text or the supplementary materials. Source data are provided with this paper.

Code availability

The codes used in this study are open-source and accessible online.

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Acknowledgements

We thank W. Gan (New York University) for providing Thy1-GCaMP6s mice, L. Looger (Janelia Research Campus) for providing the iAChSnFR sensor, R. Drenan (Wake Forest University) for providing AAVs encoding Chrnb2 and Chrna7 sgRNA sequences and Yang Lab members for helpful discussion. This work was supported by National Institutes of Health grants R01AA027108 (to G.Y.), R35GM131765 (to G.Y.) and the Columbia University Medical Center Target of Opportunity award (to G.Y.).

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Authors and Affiliations

  1. Department of Anesthesiology, Columbia University Medical Center, New York, NY, USA

    Hang Zhou, Miao Li, Linlin Sun & Guang Yang

  2. Department of Neuroscience and Physiology, Skirball Institute, New York University School of Medicine, New York, NY, USA

    Ruohe Zhao

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Contributions

H.Z. and G.Y. conceived the project and designed the experiments. H.Z. and R.Z. performed Ca2+ imaging and EEG/EMG recordings. H.Z. and M.L. performed optogenetic manipulation and spine imaging. H.Z. and L.S. performed DRG imaging. H.Z. performed all the other experiments. H.Z., M.L. and R.Z. analyzed the data. All authors contributed to data interpretation. H.Z. and G.Y. wrote the manuscript with input from all authors.

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Correspondence to Guang Yang.

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Extended data

Extended Data Fig. 1 Alterations in S1 inhibitory neuronal Ca2+ activity are reduced by silencing VIP INs during sleep after SNI.

a, Schematic of S1 local circuitry. b, SNI-induced changes in neuronal Ca2+ activity (mean ± s.e.m.) in S1 of resting awake mice (n = 192, 93, 100, and 86 cells from three mice per group). PNs, P = 0.23 (day 1), 0.0026 (day 3), < 0.0001 (day 5–30); VIP, P = 0.017 (day 1), < 0.0001 (day 2–7), 0.0046, 0.0036; SST, P = 0.46, 0.68, 0.53, 0.034, 0.0043, 0.018, 0.014; PV, P = 0.083, 0.0006, < 0.0001 (day 5, 7), 0.004, 0.023, 0.007. c, Top, experimental design for chemogenetic inhibition of S1 VIP INs via hM4D(Gi) and Ca2+ imaging of VIP and SST INs. Bottom, representative two-photon images of GCaMP/mCherry-expressing VIP INs (arrows) and GCaMP-expressing SST INs (bottom; 4 mice). d, Average Ca2+ traces (mean with 95% CI) of VIP and SST INs before and 1 h after CNO injection (n = 168 and 226 cells from four mice). Acute inhibition of VIP INs (****P < 0.0001) increases SST neuron activity (****P < 0.0001) in SNI mice. e, Daily inhibition of VIP INs at ZT2 reduces SNI-induced SST hypoactivity (n = 217, 177, 190 cells from four mice per group; ****P < 0.0001). f, Top, experimental design for chemogenetic inhibition of S1 VIP INs via PSAM4-GlyR and Ca2+ imaging of PV INs. Bottom, two-photon images of EGFP-expressing VIP INs and GCaMP-expressing PV INs (13 mice). g, Similar to (d), but for PV INs before and after uPSEM817 injection (n = 203 cells from four mice; ****P < 0.0001). h, Similar to (e), but for PV INs after VIP inhibition (n = 142, 116, 148 cells from three mice per group; ****P < 0.0001). Box bounds and center, quartiles and median; whiskers, min and max (d, e, g, h). *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001 by two-sided Wilcoxon (b, d, g) or Kolmogorov-Smirnov test (e, h). Detailed statistics are in Supplementary Table 1.

Source data

Extended Data Fig. 2 Silencing S1 VIP INs during sleep prevents persistent ongoing pain after SNI.

a, Schematic of experimental timeline and the conditioned place preference (CPP) test. Two weeks after viral infection, mice were subjected to SNI and daily inhibition of the target cells in the sleep or wake phase for 5 days. CPP tests were performed 2–3 weeks after the last inhibition session. b, Representative heat maps showing time spent in CPP chambers. c, Time spent in the saline- and lidocaine-paired chambers for individual mice (n = 5, 5, 5, 6 mice; saline vs. lidocaine, P = 0.87, 0.0004, 0.0001, 0.90; related to Fig. 2d). d, Time spent in the saline- and lidocaine-paired chambers for individual mice (n = 6, 6, 6, 5, 5, 4 mice; saline vs. lidocaine, P = 0.81, 0.0035, 0.0063, 0.18, 0.74, 0.058; related to Fig. 2f). e, Time spent in the saline- and lidocaine-paired chambers for individual mice (n = 5 mice per group, saline vs. lidocaine, P = 0.91, 0.0022, 0.019, 0.66; related to Fig. 5e). f, Time spent in the saline- and lidocaine-paired chambers for individual mice (n = 4, 5, 4, 5 mice; saline vs. lidocaine, P = 0.36, 0.012, 0.011, 0.12; related to Fig. 6e). g, Time spent in the saline- and lidocaine-paired chambers for individual mice (n = 6 mice per group; saline vs. lidocaine, P = 0.11, 0.0010, 0.97, 0.49; related to Fig. 7b). Inset, experimental timeline. Mean ± s.e.m. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; NS, not significant; by two-sided paired t-test. Detailed statistics are in Supplementary Table 1.

Source data

Extended Data Fig. 3 The sleep-wake structure and EEG power analysis in mice with or without neuropathic pain.

a, Mean NREM sleep distribution (n = 5 mice per group). No difference in sleep pattern following 3- or 7-day acclimation (F(7, 64) = 0.98, P = 0.45). The VIP-Cre transgene has no effect on sleep pattern (F(7, 64) = 0.26, P = 0.97 vs. C57 3-day acclimation). b, Percentages of time in wake, NREM and REM sleep during the rest and active phase of the mouse (n = 5 mice). c, EEG analysis for naïve VipIRES-Cre mice expressing eNpHR (no surgery) (n = 4 mice per group). Experimental timeline for optogenetic inhibition (left), mean EEG power density (right) and percentages of time (inset) in wake, NREM and REM sleep. VIP inhibition has no effect on EEG power intensity in wake (P = 0.68), NREM (P = 0.55) and REM (P = 0.89) sleep. d, EEG analysis for VipIRES-Cre mice expressing EYFP (n = 5 mice; related to Fig. 2f). Mean EEG power density in NREM (left) and quantification (right) before, 3 and 14 days after SNI. Inset, percentages of wake, NREM, and REM. SNI decreases the power of δ wave (P = 0.0020, 0.24 vs. Pre) and increases the power of α (P = 0.014, 0.0050) and σ waves (P = 0.016, 0.017) in NREM sleep. e, Similar to (d), but for VipIRES-Cre mice expressing eNpHR (n = 10 mice; related to Fig. 2f). Daily inhibition of VIP INs reverses alterations in NREM power density after SNI (δ, P = 0.033, 0.61; θ, 0.27, 0.20; α, 0.0001, 0.86; σ, 0.0017, 0.60 vs. Pre). Mean ± s.e.m. Shading in a, c, d, e, 95% CI. *P < 0.05, **P < 0.01, ***P < 0.001; NS, not significant; by two-sided two-way ANOVA (a), Mann-Whitney (c) or paired t-test (d, e). Detailed statistics are in Supplementary Table 1.

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Extended Data Fig. 4 Pharmacological inhibition of α7-containing nAChRs or mAChRs in S1 has little effect on SNI-induced allodynia in mice.

a, Left, schematic of experimental design to evaluate intracortical drug spread with Alexa633 hydrazide (0.15 µl, 1 µM). Confocal images of serial brain slices (middle) and quantification (right) showing Alexa633 fluorescence mainly restricted in L2/3 of S1 (n = 3 mice). L, lateral; ML, midline; D, dorsal; V, ventral. a.u., arbitrary units. b–d, Left, schematic of experimental design. Mice received daily intracortical (i.c.) injections of AChR antagonist (0.15 µl), at either ZT2 or ZT14, from days 1 to 5 after SNI. Control mice received vehicle (ACSF) injections. Right, nociceptive thresholds in mice. Vehicle controls (dashed line) were shared between (b–d) and Fig. 4d. b, Administration of methyllycaconitine (MLA, 10 nM), an antagonist of α7-containing nAChRs, at ZT2 has minor effects on alleviating SNI-induced mechanical allodynia in mice (n = 6 mice in ZT2 group tested for punctate pain; n = 5 mice per group for other tests; SNI-ZT2 vs. SNI, punctate, F(9, 90) = 2.50, P = 0.013; dynamic, F(3, 27) = 8.83, P = 0.0002; cold, F(3, 27) = 0.65, P = 0.59; hot, F(3, 27) = 0.49, P = 0.69). c, Administration of scopolamine (20 µM), a pan-mAChR antagonist, has no effects on alleviating SNI-induced allodynia in mice (n = 6 mice per group; SNI-ZT2 vs. SNI, punctate, F(9, 90) = 1.49, P = 0.16; dynamic, F(3, 30) = 0.50, P = 0.69; cold, F(3, 30) = 0.07, P = 0.97; hot, F(3, 30) = 0.78, P = 0.51). d, Administration of AF-DX 116 (150 nM) and PD102807 (200 nM), M2- and M4-containing mAChR antagonists, has no effects on alleviating SNI-induced allodynia in mice (n = 5 mice per group; SNI-ZT2 vs. SNI, punctate, F(9, 81) = 1.99, P = 0.051; dynamic, F(3, 27) = 1.07, P = 0.38; cold, F(3, 27) = 0.95, P = 0.43; hot, F(3, 27) = 1.63, P = 0.21). Mean ± s.e.m. *P < 0.05, ** P < 0.01, *** P < 0.001; NS, not significant; by two-way ANOVA followed by Bonferroni’s test (two-sided). Detailed statistics are in Supplementary Table 1.

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Extended Data Fig. 5 Neuronal and behavioral effects of CRISPR/Cas9-mediated cell-type specific Chrnb2 and/or Chrna7 deletion in S1.

a, Experimental design for selective knockout (KO) of Chrnb2 (β2) or Chrna7 (α7) in S1 VIP INs and expression of hM3D(Gq) in aNB→S1 projections (left), two-photon images of VIP INs expressing GCaMP6s and Cas9-mCherry (middle), and Ca2+ activity before and 20 min post-CNO (right). VIP INs increase activity upon activation of aNB→S1 projections, which is abolished with β2 KO. (non-KO/KO cells/mice; n = 53/117/three, 73/96/four, 61/106/four; KO vs. non-KO, P = 0.87, 0.0054, 0.23). b, Experimental design for β2 or α7 KO in VIP (left), images of Cas9-EGFP+ VIP and GCaMP6s+ PNs (middle), and PN Ca2+ activity before and after SNI (n = 208, 253, 253, 189 cells from three mice per group). SNI-induced PN hyperactivation is abolished after VIP β2 KO (D14, wake, F(2, 1458) = 6.91, P = 0.0005; NREM, F(2, 1458) = 6.91, P < 0.0001). c, VIP β2 or α7 KO has no effects on baseline nociceptive thresholds (n = 11, 5, 5 mice; punctate, P = 0.17, 0.40, 0.78). d, VIP α7 KO partially reduces SNI-induced allodynia (n = 6, 5, 5 mice; punctate, P = 0.24, 0.44, 0.017; dynamic, 0.035, 0.031, 0.0087; cold, 0.015, 0.10, 0.067; hot, 0.042, 0.27, 0.20). e,f,g, Experimental design for β2 and/or α7 KO in SST, PV, or PNs in S1 (e), which has no effects on baseline nociceptive thresholds (f; n = 9, 9, 5, 5, 4, 4, 5 mice; punctate, P = 0.99, 0.13, 0.37, 0.75, 0.43, 0.83, 0.25), and SNI-induced allodynia (g; n = 9, 9, 5, 5, 4, 4, 5 mice; SST-α7 KO, punctate, F(8, 96) = 0.09, P = 0.99; dynamic, F(3, 36) = 0.79, P = 0.51; cold, F(3, 36) = 0.02, P = 0.99; hot, F(3, 36) = 0.31, P = 0.81). Mean ± s.e.m. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; NS, not significant; by two-sided Wilcoxon (a, c, f), Kolmogorov-Smirnov (a), two-way ANOVA followed by Bonferroni’s test (vs. SNI; b, d, g). Detailed statistics are in Supplementary Table 1.

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Extended Data Fig. 6 Characterization of aNB→S1 projections co-releasing ACh/GABA and their role in neuropathic pain.

a, Schematic of experimental design. Retrobeads were injected into L1–L2/3 of S1 to trace S1-projecting cells in the aNB region (3 mice). b,c, Immunofluorescence images in the aNB region showing ChAT+ cells (b) and colocalization of ChAT, GAD2, and Retrobeads (c). d, Quantification of data shown in (c) (3 mice). Percentages of ChAT+ cells expressing GAD2, S1-projecting (Retrobeads+) cells expressing ChAT, or both ChAT and GAD2. e, Left, experimental design and timeline for CRISPR/Cas9-mediated deletion of Slc32a1 gene (encoding VGAT) in aNB cholinergic neurons and labeling of their axonal boutons with synaptophysin (Syp)-mRuby. Middle, immunofluorescence images showing colocalization of VGAT and VAChT in Syp-mRuby+ cholinergic boutons in S1. Right, percentages of VAChT+ boutons expressing VGAT in control and Slc32a1 knockout (KO) mice (n = 4 mice per group). Arrows, Syp-mRuby+ boutons. Scramble, a control vector without Slc32a1 sgRNA sequence. f, Left, experimental design for selective deletion of Slc32a1 gene in aNB–S1 projection neurons. Right, nociceptive thresholds under various conditions (n = 6, 5, 6 mice). VGAT KO in aNB–S1 projection neurons has no marked effects on SNI-induced mechanical and thermal allodynia in mice (punctate, P = 0.067, 0.081, 0.057; dynamic, 0.068, 0.19, 0.0093; cold, 0.089, 0.99, 0.82; hot, 0.058, 0.048, 0.16). Mean ± s.e.m. *P < 0.05, **P < 0.01; NS, not significant; by two-sided Mann-Whitney U test (e) or two-way ANOVA followed by Bonferroni’s test (f). See detailed statistics are in Supplementary Table 1.

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Extended Data Fig. 7 Retrograde labeling of aNB-projecting neurons in the midbrain.

a, Schematic of experimental design. Retrobeads were injected into the aNB to retrogradely label the aNB-projecting neurons in PB of ChATIRES-Cre or Slc17a6IRES-Cre mice. ChAT+ or vGLUT2+ PB neurons were labeled by AAVs encoding Cre-inducible EGFP. b, Images showing red Retrobeads injected into the aNB region (AP -0.8 – -1.1 mm) (repeated in 3 mice). c–f, Coronal brain sections showing the distribution of Retrobeads in the midbrain 10 days after injection (3 mice). g, h, Percentages of aNB-projecting neurons in midbrain nuclei at AP -4.6 – -4.9 mm (g) and -5.1 – -5.4 mm (h) (n = 3 mice). Inset: fraction of Retrobeads+ cells in the lateral PB (lPB) and the medial PB (mPB) ipsilateral or contralateral to the injection site. i, Colocalization of Retrobeads+ somas and NeuN+ nuclei in PB. Arrows indicate Retrobeads+NeuN+ cells. j, Percentages of NeuN+ cells containing Retrobeads (3 mice). k, Colocalization of Retrobeads+, EGFP-labeled vGLUT2+, and ChAT immunoreactive somas in PB of Slc17a6IRES-Cre mice. Yellow and magenta arrows indicate vGLUT2+Retrobeads+ and ChAT+Retrobeads+ cells, respectively (3 mice). l, Percentages of Retrobeads+ cells expressing vGLUT2 and/or ChAT in lPB and mPB (n = 3 mice). m, Confocal images of coronal sections from ChATIRES-Cre mice. Upper, colocalization of Retrobeads+ and calcitonin gene-related peptide immunoreactive (CGRP+) somas in the external lPB (elPB) and the external mPB (emPB) (3 mice). Red and white arrows indicate Retrobeads+ and CGRP+ cells, respectively. Lower, colocalization of Retrobeads+, EGFP-labeled ChAT+, and CGRP+ somas in mPB (2 mice). Yellow, white, and magenta arrows indicate Retrobeads+ChAT+CGRP–, Retrobeads+ChAT–CGRP–, and Retrobeads–ChAT–CGRP+ cells, respectively. n, Percentages of Retrobeads+ cells expressing CGRP in mPB and lPB (2 mice). Mean ± s.e.m.

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Extended Data Fig. 8 A group of basal forebrain cholinergic neurons receive monosynaptic inputs from PB and preferentially project to the superficial layers of S1.

a, Schematic of experimental design to label PB→aNB→S1 projections. AAV1 encoding neuron-specific Cre recombinase was injected into PB. AAVs encoding Cre-inducible EGFP were injected into aNB to visualize neurons receiving monosynaptic inputs from PB. The distribution of EGFP+ axons across layers of S1 was examined. b, EGFP fluorescence superimposed on the light field images of the aNB region at various AP coordinates (3 mice). c, High-magnitude images of the aNB region at various AP coordinates, stained for DAPI. Arrows indicate EGFP+ cells receiving monosynaptic inputs from PB. d, Distribution of basal forebrain cells receiving monosynaptic inputs from PB (n = 3 mice). e, Immunofluorescence coronal sections of the basal forebrain showing the colocalization of EGFP+ and ChAT immunoreactive (ChAT+) cells (3 mice). Blue dashed lines profile the empirical region of NB with the hallmark of magnocellular neurons. f, Left, representative images of aNB at different AP coordinates showing the heterogenous distribution of ChAT+ cells receiving monosynaptic inputs from PB (3 mice). Right, percentages of aNB ChAT+ cells receiving monosynaptic inputs from PB, in the rostral (AP -0.45 – -0.80 mm) and caudal (AP -0.80 – -1.15 mm) regions. g, Intensity distribution of EGFP+ axons (derived from aNB neurons receiving PB projections) across layers of S1 (n = 3 mice) compared with the distribution of projections from aNB ChAT+ cells (black line, from Supplementary Fig. 4; n = 4 mice). Mean ± s.e.m. L, lateral; ML, midline; D, dorsal; V, ventral; ic, internal capsule; GPe, external globus pallidus; GPi, internal globus pallidus; SI, substantia innominate.

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Extended Data Fig. 9 Silencing PB→aNB projections during sleep reduces aNB→S1 projection hyperactivity and allodynia after SNI.

a-c, Schematic of experimental design for optogenetic inhibition of PB→aNB terminals (a), its acute effects on aNB axonal Ca2+ in S1 (b; solid lines, mean changes in Ca2+ signals; shading, 95% CI), and quantification of peak Ca2+ activity immediately following light stimulation (c; n = 137 boutons from three mice; wake, P = 0.84, 0.036, 0.0004; NREM, P = 0.033, 0.0003, < 0.0001). d, Schematic of viral injections for chemogenetic inhibition of PB→aNB projection cells and Ca2+ imaging in aNB→S1 axons of the aNB cells receiving PB projections. e, Within 1–1.5 h after uPSEM817 administration (0.3 mg kg−1; i.p. at ZT4) to inhibit PB→aNB projection cells, axonal Ca2+ in aNB→S1 projections was decreased more in NREM than in wake (n = 250 boutons from five mice; P < 0.0001). f, Daily inhibition of PB→aNB projection cells at ZT2 for 5 days following SNI effectively reduces aNB→S1 axonal Ca2+ activity on day 14 (n = 147, 161, 143, 159 boutons from three mice; SNI-ZT2 vs. SNI, P = 0.0005 wake, < 0.0001 NREM). g, Daily inhibition of PB→aNB projections at ZT2 for 5 days following SNI, reduces punctate (P = 0.0018, 0.0002, 0.0007), dynamic (P = 0.0005, < 0.0001, < 0.0001), cold (P = 0.013, 0.0002, 0.0014), and hot (P = 0.0050, 0.0007, 0.0009) allodynia 14, 21 and 28 days after SNI mice (n = 5 mice per group). IR: infrared radiant. Mean ± s.e.m. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; NS, not significant; by two-sided paired t (c), Wilcoxon (e), Kolmogorov-Smirnov (f) or two-way ANOVA followed by Bonferroni’s test (g). Detailed statistics are in Supplementary Table 1.

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Extended Data Fig. 10 Inhibition of PB→aNB→S1 circuits during sleep reduces sleep fragmentation in SNI mice.

a–c, Number of wake (a), NREM (b), REM (c) episodes per hour. EEG/EMG recordings were performed during ZT2–ZT10. SNI increases the number of wake/NREM/REM episodes in the rest phase of the mouse (indicative of sleep fragmentation), which is mitigated after opto- or chemogenetic inhibition of PB–aNB–S1 circuits (n = 12, 11, 13, 5, 5, 5, 5, 10, 10 mice). Treatment I–IV vs. D14, P = 0.0019 (wake), < 0.0001 (NREM), 0.0002 (REM); Treatment V vs. D34, P = 0.0007 (wake), 0.0007 (NREM), 0.0001 (REM). d–h, Number of transitions between brain states per hour. EEG/EMG recordings were performed during ZT2–ZT10. SNI increases the number of transitions between brain states in the rest phase of the mouse, which is mitigated after opto- or chemogenetic inhibition of PB–aNB–S1 circuits (n = 12, 11, 13, 5, 5, 5, 5, 10, 10 mice). Treatment I–IV vs. D14, P = 0.0025 (wake→NREM), 0.0057 (NREM→wake), 0.0002 (NREM→REM), 0.0003 (REM→NREM), 0.0012 (REM→wake); treatment V vs. D34, P = 0.0007 (wake→NREM), 0.043 (NREM→wake), 0.0001 (NREM→REM), 0.81 (REM→NREM), < 0.0001 (REM→wake). Mice in treatment groups I–V are the same mice shown in Figs. 2f, 5e, 6e, and 7b. Pie graphs indicate the fraction of mice with (> 1× s.d.) or without (< 1× s.d.) changes in sleep compared to pre-SNI, where 1× s.d. is an arbitrary threshold. Mean ± s.e.m. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; NS, not significant; by two-sided Mann-Whitney U test. Gray symbols, vs. pre-SNI. Black symbols, vs. D14 or D34 post-SNI. Detailed statistics are in Supplementary Table 1.

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Supplementary information

Supplementary Information

Supplementary Figs. 1–5.

Reporting Summary

Supplementary Data

Supporting data for Supplementary Figs. 1–5

Supplementary Table 1

Statistical details for Figs. 1–7, Extended Data Figs. 1–10 and Supplementary Figs. 1–5.

Supplementary Table 2

Mouse sex information for all experiments.

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Zhou, H., Li, M., Zhao, R. et al. A sleep-active basalocortical pathway crucial for generation and maintenance of chronic pain. Nat Neurosci 26, 458–469 (2023). https://doi.org/10.1038/s41593-022-01250-y

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