» Articles » PMID: 1560032

Transforming Growth Factor-beta 1 in the Rat Brain: Increase After Injury and Inhibition of Astrocyte Proliferation

Overview
Journal J Cell Biol
Specialty Cell Biology
Date 1992 Apr 1
PMID 1560032
Citations 112
Authors
Affiliations
Soon will be listed here.
Abstract

Transforming growth factor-beta 1 (TGF-beta 1) has been shown to up-regulate the synthesis of nerve growth factor (NGF) in cultured rat astrocytes and in neonatal brain in vivo (Lindholm, D., B. Hengerer, F. Zafra, and H. Thoenen. 1990. NeuroReport. 1:9-12). Here we show that mRNA encoding TGF-beta 1 increased in rat cerebral cortex after a penetrating brain injury. The level of NGF mRNA is also transiently increased after the brain trauma, whereas that of brain-derived neurotrophic factor remained unchanged. In situ hybridization experiments showed a strong expression of TGF-beta 1 4 d after the lesion in cells within and in the vicinity of the wound. Staining of adjacent sections with OX-42 antibodies, specific for macrophages and microglia/brain macrophages, revealed a similar pattern of positive cells, suggesting that invading macrophages, and perhaps reactive microglia, are the source of TGF-beta 1 in injured brain. Both astrocytes and microglia express TGF-beta 1 in culture, and TGF-beta 1 mRNA levels in astrocytes are increased by various growth factors, including FGF, EGF, and TGF-beta itself. TGF-beta 1 is a strong inhibitor of astrocyte proliferation and suppresses the mitotic effects of FGF and EGF on astrocytes. The present results indicate that TGF-beta 1 expressed in the lesioned brain plays a role in nerve regeneration by stimulating NGF production and by controlling the extent of astrocyte proliferation and scar formation.

Citing Articles

High spatial resolution gene expression profiling and characterization of neuroblasts migrating in the peri-injured cortex using photo-isolation chemistry.

Miyamoto T, Kuboyama K, Honda M, Ohkawa Y, Oki S, Sawamoto K Front Neurosci. 2025; 18():1504047.

PMID: 39840011 PMC: 11747130. DOI: 10.3389/fnins.2024.1504047.


Changes in serum concentration of perioperative inflammatory cytokines following the timing of surgery among mild-moderate traumatic brain injury patients and factors associated.

Lekuya H, Cose S, Nakibuule M, Ahimbisibwe G, Fuller A, Kamabu L Front Neurol. 2025; 15:1484742.

PMID: 39744105 PMC: 11688224. DOI: 10.3389/fneur.2024.1484742.


Exploring neuroglial signaling: diversity of molecules implicated in microglia-to-astrocyte neuroimmune communication.

Mohammad Z, Yudin S, Goldberg B, Serra K, Klegeris A Rev Neurosci. 2024; 36(1):91-117.

PMID: 39240134 PMC: 11717358. DOI: 10.1515/revneuro-2024-0081.


Neurological Manifestations Following Traumatic Brain Injury: Role of Behavioral, Neuroinflammation, Excitotoxicity, Nrf-2 and Nitric Oxide.

Goyal L, Singh S CNS Neurol Disord Drug Targets. 2024; 24(1):47-59.

PMID: 39082170 DOI: 10.2174/0118715273318552240708055413.


Inflammation Modifies miR-21 Expression Within Neuronal Extracellular Vesicles to Regulate Remyelination Following Spinal Cord Injury.

Han T, Song P, Wu Z, Liu Y, Ying W, Shen C Stem Cell Rev Rep. 2023; 19(6):2024-2037.

PMID: 37256514 PMC: 10390616. DOI: 10.1007/s12015-023-10560-y.


References
1.
Hatten M, Lynch M, Rydel R, Sanchez J, Moscatelli D, Rifkin D . In vitro neurite extension by granule neurons is dependent upon astroglial-derived fibroblast growth factor. Dev Biol. 1988; 125(2):280-9. DOI: 10.1016/0012-1606(88)90211-4. View

2.
Leibrock J, Lottspeich F, Hohn A, Hofer M, Hengerer B, Masiakowski P . Molecular cloning and expression of brain-derived neurotrophic factor. Nature. 1989; 341(6238):149-52. DOI: 10.1038/341149a0. View

3.
Rossi P, Karsenty G, Roberts A, Roche N, Sporn M, de Crombrugghe B . A nuclear factor 1 binding site mediates the transcriptional activation of a type I collagen promoter by transforming growth factor-beta. Cell. 1988; 52(3):405-14. DOI: 10.1016/s0092-8674(88)80033-3. View

4.
Streit W, Graeber M, Kreutzberg G . Functional plasticity of microglia: a review. Glia. 1988; 1(5):301-7. DOI: 10.1002/glia.440010502. View

5.
Mustoe T, Pierce G, Thomason A, Gramates P, Sporn M, Deuel T . Accelerated healing of incisional wounds in rats induced by transforming growth factor-beta. Science. 1987; 237(4820):1333-6. DOI: 10.1126/science.2442813. View