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Related Concept Videos

TGF - β Signaling Pathway01:16

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
General Transcription Factors01:30

General Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription Factors02:16

Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Activation and Inactivation of G Proteins01:22

Activation and Inactivation of G Proteins

Heterotrimeric G proteins are guanine nucleotide-binding proteins. As the name suggests, heterotrimeric G proteins are composed of three subunits: alpha, beta, and gamma. They remain GDP-bound or GTP-bound inside the cells and switch between inactive/active states. The Gα subunit possesses the nucleotide-binding pocket that binds guanine nucleotides and switches between GDP or GTP-bound states. In contrast, the Gꞵ and Gγ subunits are always bound together with high affinity and are together...
Testes: Histology01:27

Testes: Histology

A tough, fibrous membrane, the tunica albuginea, covers the testes, extending inward to form fibrous partitions or septa, dividing them into internal compartments called lobules. Each lobule has 1 to 3 tightly coiled seminiferous tubules where sperm production occurs. These tubules merge into a tubular network at the back of the testis, known as the rete testis. It connects to 15 to 20 efferent ductules, leading to the epididymis.
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Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
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TGF-β superfamily: how does it regulate testis development.

Yun-Shu Fan1, Yan-Jun Hu, Wan-Xi Yang

  • 1The Sperm Laboratory, Institute of Cell Biology and Genetics, College of Life Sciences, Zhejiang University, 368 Yu Hang Tang Road, Hangzhou, 310058, People's Republic of China.

Molecular Biology Reports
|September 28, 2011
PubMed
Summary
This summary is machine-generated.

Transforming growth factor-beta (TGF-β) superfamily members are key regulators of testis development and male fertility. This review examines their crucial roles in cell signaling, proliferation, and differentiation throughout spermatogenesis.

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Area of Science:

  • Reproductive Biology
  • Developmental Biology
  • Cell Signaling

Background:

  • Testis development is a complex, regulated process essential for male fertility.
  • Proper cell function and timing are critical for normal testicular development and spermatogenesis.
  • The transforming growth factor-beta (TGF-β) superfamily plays a significant role in mediating these processes.

Purpose of the Study:

  • To review the regulatory roles of TGF-β superfamily members in testis development.
  • To analyze current research and identify limitations in understanding TGF-β signaling in the testis.
  • To highlight areas for future investigation in male reproductive biology.

Main Methods:

  • Literature review of studies on TGF-β signaling in testis development.
  • Analysis of experimental data and findings from existing research.
  • Synthesis of current knowledge on TGF-β's functions in spermatogenesis.

Main Results:

  • TGF-β signaling pathways are crucial for germ cell lineage establishment and differentiation.
  • These factors regulate cell proliferation, apoptosis, and behavior during testis development.
  • TGF-β ligands act as extracellular mediators coordinating cellular physiology with organismal development.

Conclusions:

  • TGF-β superfamily members are indispensable for normal testis development and male fertility.
  • Further research is needed to fully elucidate the complex regulatory networks involving TGF-β in the testis.
  • Understanding these pathways can inform strategies for addressing male infertility.