TGF Beta (Transforming Growth Factor Beta)

Overview

TGF-beta is a pleiotropic cytokine with dual roles: immunosuppressive (driving regulatory T cell [Treg] differentiation and maintaining immune tolerance) and pro-fibrotic (promoting extracellular matrix deposition, wound healing, and tissue fibrosis). In the WikiBiome context, TGF-beta sits at the intersection of microbiome-driven immune regulation, metal-induced fibrosis, and several disease signatures.

Microbiome Connection

  • SCFA-driven Treg induction: Butyrate from faecalibacterium prausnitzii and other SCFA producers promotes TGF-beta-dependent Treg differentiation in the gut — the primary mechanism by which the microbiome maintains immune tolerance. Dysbiosis-driven butyrate loss reduces TGF-beta/Treg signaling, enabling inflammatory and autoimmune pathology.
  • Endometriosis: TGF-beta drives endometrial stromal cell proliferation and fibrosis; gut microbiome disruption (antibiotic-induced) affects TGF-beta-dependent endometriotic lesion progression [1].
  • Hashimoto's thyroiditis: TGF-beta-mediated Treg/Th17 balance disrupted via gut microbiota-immune crosstalk [2].
  • ASD: Immunoregulatory TGF-beta pathways altered in ASD [3].

Metal Connection

  • Cadmium and lead induce TGF-beta overexpression in kidney tissue, driving renal fibrosis [4].
  • The dual nature of TGF-beta means metal-driven TGF-beta elevation is simultaneously immunosuppressive (reducing pathogen clearance) and pro-fibrotic (causing tissue damage).

Cross-References

References (6)

  1. Chadchan SB, Cheng M, Parnell LA et al. (2019). Antibiotic therapy with metronidazole reduces endometriosis disease progression in mice: a potential role for gut microbiota. Human Reproduction. doi:10.1093/humrep/dez041
  2. Pei XQ, Wang WH, Gao YH et al. (2024). Role of immune cells in mediating the effect of gut microbiota on Hashimoto's thyroiditis: a 2-sample Mendelian randomization study. Frontiers in Microbiology. doi:10.3389/fmicb.2024.1463394
  3. Gara Arteaga-Henriquez, Laura Gisbert, Josep Antoni Ramos-Quiroga (2023). Arteaga-Henriquez 2023 -- Immunoregulatory and/or Anti-inflammatory Agents for the Management of Core and Associated Symptoms in Individuals with ASD. CNS Drugs. doi:10.1007/s40263-023-00993-x
  4. ★Manish Mishra, Larry Nichols, Aditi A. Dave et al. (2022). Molecular Mechanisms of Cellular Injury and Role of Toxic Heavy Metals in Chronic Kidney Disease. International Journal of Molecular Sciences. doi:10.3390/ijms23063997
  5. Jiang L, Fei H, Tong J et al. (2021). Hormone Replacement Therapy Reverses Gut Microbiome and Serum Metabolome Alterations in Premature Ovarian Insufficiency. Frontiers in Endocrinology. doi:10.3389/fendo.2021.794496
  6. Courtney Dye, Kathryn M. Lenz, Benedetta Leuner (2022). Dye et al. 2022 — Immune System Alterations in Postpartum Mental Illness. Frontiers in Global Women's Health. doi:10.3389/fgwh.2021.758748

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