Abstract
Diagnosing and treating chronic orofacial pain is challenging due to its complex structure and limited understanding of its causes and mechanisms. In this study, we used RNA sequencing to identify differentially expressed genes (DEGs) in the rostral ventral medulla (RVM) and thalamus of rats with persistent orofacial pain, aiming to explore its development. DEGs were functionally analyzed using gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Results showed a significant association between immune response and pain in this model. Key DEG mRNA expression trends were further validated using real-time quantitative polymerase chain reaction (RT-PCR), confirming their crucial roles in chronic orofacial pain. After injecting complete Freund’s adjuvant (CFA) into the bilateral temporomandibular joint cavity for 14 days, we observed 293 upregulated genes and 14 downregulated genes in the RVM, and 1086 upregulated genes and 37 downregulated genes in the thalamus. Furthermore, we identified 27 common DEGs with altered expression (upregulation) in both the thalamus and RVM, including Cd74, C3, Cxcl13, C1qb, Itgal, Fcgr2b, C5ar1, and Tlr2, which are pain-associated genes. Protein-protein interaction (PPI) analysis using Cytoscape revealed the involvement of Toll-like receptors, complement system, differentiation clusters, and antigen presentation-related proteins in the interaction between the thalamus and RVM. The results of this study show that the immune system seems to have a more significant influence on chronic orofacial pain. There may be direct or indirect influence between the thalamus and RVM, which may participate in the regulation of chronic orofacial pain.
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Data Availability
Raw and processed data are available from the Gene Expression Omnibus (GEO) (www.ncbi.nlm.nih.gov/geo/), series accession number: GSE222926.
References
Bingel U, Lorenz J, Schoell E, Weiller C, Büchel C (2006) Mechanisms of placebo analgesia: rACC recruitment of a subcortical antinociceptive network. Pain 120(1–2):8–15. https://doi.org/10.1016/j.pain.2005.08.027
Bonin EAC, Lejeune N, Szymkowicz E, Bonhomme V, Martial C, Gosseries O, Laureys S, Thibaut A (2023) Assessment and management of pain/nociception in patients with disorders of consciousness or locked-in syndrome: a narrative review. Front Syst Neurosci 17:1112206. https://doi.org/10.3389/fnsys.2023.1112206
Bray NL, Pimentel H, Melsted P, Pachter L (2016) Near-optimal probabilistic RNA-seq quantification. Nat Biotechnol 34(5):525–527. https://doi.org/10.1038/nbt.3519
Calvo M, Dawes JM, Bennett DL (2012) The role of the immune system in the generation of neuropathic pain. Lancet Neurol 11(7):629–642. https://doi.org/10.1016/s1474-4422(12)70134-5
Chamaa F, Chebaro M, Safieh-Garabedian B, Saadeh R, Jabbur SJ, Saadé NE (2016) Transcriptional expression of inflammatory mediators in various somatosensory relay centers in the brain of rat models of peripheral mononeuropathy and local inflammation. J Neuroimmunol 297:81–91. https://doi.org/10.1016/j.jneuroim.2016.05.005
Chen S, Zhou Y, Chen Y, Gu J (2018) Fastp: an ultra-fast all-in-one FASTQ preprocessor. Bioinformatics 34(17):i884–i890. https://doi.org/10.1093/bioinformatics/bty560
Cui X, Qin B, Xia C, Li H, Li Z, Li Z, Nasir A, Bai Q (2023) Transcriptome-wide analysis of trigeminal ganglion and subnucleus caudalis in a mouse model of chronic constriction injury-induced trigeminal neuralgia. Front Pharmacol 14:1230633. https://doi.org/10.3389/fphar.2023.1230633
Dantzer R (2004) Cytokine-induced sickness behaviour: a neuroimmune response to activation of innate immunity. Eur J Pharmacol 500(1–3):399–411. https://doi.org/10.1016/j.ejphar.2004.07.040
Dong T, Si H, Li Z, Bai Q, Tao F (2022) Transcriptomic analysis of trigeminal ganglion and spinal trigeminal nucleus Caudalis in mice with inflammatory Temporomandibular Joint Pain. J Pain Res 15:1487–1502. https://doi.org/10.2147/jpr.S364887
Elberg G, Liraz-Zaltsman S, Reichert F, Matozaki T, Tal M, Rotshenker S (2019) Deletion of SIRPα (signal regulatory protein-α) promotes phagocytic clearance of myelin debris in Wallerian degeneration, axon regeneration, and recovery from nerve injury. J Neuroinflammation 16(1):277. https://doi.org/10.1186/s12974-019-1679-x
Faulkner JR, Herrmann JE, Woo MJ, Tansey KE, Doan NB, Sofroniew MV (2004) Reactive astrocytes protect tissue and preserve function after spinal cord injury. J Neurosci 24(9):2143–2155. https://doi.org/10.1523/jneurosci.3547-03.2004
Grace PM, Tawfik VL, Svensson CI, Burton MD, Loggia ML, Hutchinson MR (2021) The Neuroimmunology of Chronic Pain: from rodents to humans. J Neurosci 41(5):855–865. https://doi.org/10.1523/jneurosci.1650-20.2020
Gybels J, Kupers R (1990) Deep brain stimulation in the treatment of chronic pain in man: where and why? Neurophysiol Clin 20(5):389–398. https://doi.org/10.1016/s0987-7053(05)80206-0
Halassa MM, Fellin T, Haydon PG (2007) The tripartite synapse: roles for gliotransmission in health and disease. Trends Mol Med 13(2):54–63. https://doi.org/10.1016/j.molmed.2006.12.005
Ji RR, Chamessian A, Zhang YQ (2016) Pain regulation by non-neuronal cells and inflammation. Science 354(6312):572–577. https://doi.org/10.1126/science.aaf8924
Khasabov SG, Simone DA (2013) Loss of neurons in rostral ventromedial medulla that express neurokinin-1 receptors decreases the development of hyperalgesia. Neuroscience 250:151–165. https://doi.org/10.1016/j.neuroscience.2013.06.057
Konishi H, Koizumi S, Kiyama H (2022) Phagocytic astrocytes: emerging from the shadows of microglia. Glia 70(6):1009–1026. https://doi.org/10.1002/glia.24145
Li H, Li X, Feng Y, Gao F, Kong Y, Hu L (2020) Deficits in ascending and descending pain modulation pathways in patients with postherpetic neuralgia. NeuroImage 221:117186. https://doi.org/10.1016/j.neuroimage.2020.117186
Liddelow SA, Guttenplan KA, Clarke LE, Bennett FC, Bohlen CJ, Schirmer L, Bennett ML, Münch AE, Chung WS, Peterson TC, Wilton DK, Frouin A, Napier BA, Panicker N, Kumar M, Buckwalter MS, Rowitch DH, Dawson VL, Dawson TM, Stevens B, Barres BA (2017) Neurotoxic reactive astrocytes are induced by activated microglia. Nature 541(7638):481–487. https://doi.org/10.1038/nature21029
Liu H, Leak RK, Hu X (2016) Neurotransmitter receptors on microglia. Stroke Vasc Neurol 1(2):52–58. https://doi.org/10.1136/svn-2016-000012
Liu Q, Mai L, Yang S, Jia S, Chu Y, He H, Fan W, Huang F (2022) Transcriptional alterations of mouse trigeminal ganglion neurons following orofacial inflammation revealed by single-cell analysis. Front Cell Neurosci 16:885569. https://doi.org/10.3389/fncel.2022.885569
McMahon SB, La Russa F, Bennett DL (2015) Crosstalk between the nociceptive and immune systems in host defence and disease. Nat Rev Neurosci 16(7):389–402. https://doi.org/10.1038/nrn3946
Mercer Lindsay N, Chen C, Gilam G, Mackey S, Scherrer G (2021) Brain circuits for pain and its treatment. Sci Transl Med 13(619):eabj7360. https://doi.org/10.1126/scitranslmed.abj7360
Milligan ED, Watkins LR (2009) Pathological and protective roles of glia in chronic pain. Nat Rev Neurosci 10(1):23–36. https://doi.org/10.1038/nrn2533
Miyamoto A, Wake H, Ishikawa AW, Eto K, Shibata K, Murakoshi H, Koizumi S, Moorhouse AJ, Yoshimura Y, Nabekura J (2016) Microglia contact induces synapse formation in developing somatosensory cortex. Nat Commun 7:12540. https://doi.org/10.1038/ncomms12540
Moisset X, Bouhassira D (2007) Brain imaging of neuropathic pain. Neuroimage 37 Suppl 1S80–88. https://doi.org/10.1016/j.neuroimage.2007.03.054
Nicotra L, Loram LC, Watkins LR, Hutchinson MR (2012) Toll-like receptors in chronic pain. Exp Neurol 234(2):316–329. https://doi.org/10.1016/j.expneurol.2011.09.038
Pertea M, Kim D, Pertea GM, Leek JT, Salzberg SL (2016) Transcript-level expression analysis of RNA-seq experiments with HISAT, StringTie and Ballgown. Nat Protoc 11(9):1650–1667. https://doi.org/10.1038/nprot.2016.095
Pinho-Ribeiro FA, Verri WA Jr., Chiu IM (2017) Nociceptor sensory Neuron-Immune interactions in Pain and inflammation. Trends Immunol 38(1):5–19. https://doi.org/10.1016/j.it.2016.10.001
Wager TD, Atlas LY, Lindquist MA, Roy M, Woo CW, Kross E (2013) An fMRI-based neurologic signature of physical pain. N Engl J Med 368(15):1388–1397. https://doi.org/10.1056/NEJMoa1204471
Wang LH, Ding WQ, Sun YG (2022) Spinal ascending pathways for somatosensory information processing. Trends Neurosci 45(8):594–607. https://doi.org/10.1016/j.tins.2022.05.005
Xu A, Larsen B, Baller EB, Scott JC, Sharma V, Adebimpe A, Basbaum AI, Dworkin RH, Edwards RR, Woolf CJ, Eickhoff SB, Eickhoff CR, Satterthwaite TD (2020) Convergent neural representations of experimentally-induced acute pain in healthy volunteers: a large-scale fMRI meta-analysis. Neurosci Biobehav Rev 112:300–323. https://doi.org/10.1016/j.neubiorev.2020.01.004
Xu FF, Kong LC, Cao DL, Ding BX, Wu Q, Ding YC, Wu H, Jiang BC (2022) Decoding gene expression signatures in mice trigeminal ganglion across trigeminal neuropathic pain stages via high-throughput sequencing. Brain Res Bull 187:122–137. https://doi.org/10.1016/j.brainresbull.2022.06.017
Zhang W, Chen Y, Pei H (2023) C1q and central nervous system disorders. Front Immunol 14:1145649. https://doi.org/10.3389/fimmu.2023.1145649
Zheng W, Huang X, Wang J, Gao F, Chai Z, Zeng J, Li S, Yu C (2022) The chronification mechanism of orofacial inflammatory pain: facilitation by GPER1 and microglia in the rostral ventral medulla. Front Mol Neurosci 15:1078309. https://doi.org/10.3389/fnmol.2022.1078309
Zouikr I, Karshikoff B (2017) Lifetime modulation of the Pain System via Neuroimmune and neuroendocrine interactions. Front Immunol 8:276. https://doi.org/10.3389/fimmu.2017.00276
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We thank all the participants who participated in the study.
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This work was supported by the CSA Clinical Research Grant (CSAA2021-05) and the CQMU Future Medicine Grant (W147).
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CY conceived and designed the study. JW collected the data. GYZ and LW participate in data analysis and interpretation. GYZ drafts the manuscript and JZ critically revises the manuscript. All authors have read and approved the final draft.
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Zhang, G., Wang, L., Wang, J. et al. RNA sequencing of the thalamus and rostral ventral medulla in rats with chronic orofacial pain. J Neural Transm (2024). https://doi.org/10.1007/s00702-024-02780-4
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DOI: https://doi.org/10.1007/s00702-024-02780-4