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Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
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The Pineal Gland01:02

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The pineal gland, a diminutive endocrine structure named for its pinecone-shaped appearance, is situated atop the third ventricle within the diencephalon region of the forebrain. This gland, composed of secretory cells known as pinealocytes arranged in compact cords and clusters around dense particles of calcium salts, plays a pivotal role in hormonal regulation.
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Related Experiment Video

Updated: Oct 31, 2025

Quantitative Immunohistochemistry of the Cellular Microenvironment in Patient Glioblastoma Resections
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Pineal Gland Tumor Microenvironment.

Joham Choque-Velasquez1, Szymon Baluszek2,3, Roberto Colasanti4,5

  • 1Department of Neurosurgery, University of Helsinki and Helsinki University Hospital Helsinki, Helsinki, Finland. johchove@hotmail.com.

Advances in Experimental Medicine and Biology
|June 29, 2021
PubMed
Summary

Pineal gland tumors are diverse, with molecular profiles and tumor microenvironments influencing treatment efficacy. This review highlights the current understanding of the pineal gland tumor microenvironment.

Keywords:
ATRXBRAFDICER1DROSHAGerm cell tumorsGerminomasGliomasHypomethylationIsocitrate dehydrogenaseKBTBD4MicroenvironmentPineal glandPineal parenchymal tumorsPineoblastomasPineocytomas.

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Area of Science:

  • Oncology
  • Neuroscience
  • Pathology

Background:

  • Pineal gland tumors are a diverse group, including pineal parenchymal, germ cell, and glial tumors.
  • Tumor molecular profiles and microenvironment are critical for pineal gland tumor development, progression, and treatment response.
  • Research on the pineal gland tumor microenvironment is currently limited.

Purpose of the Study:

  • To review the cellular and molecular characteristics of the pineal gland tumor microenvironment.
  • To consolidate current knowledge on the tumor microenvironment in pineal gland neoplasms.
  • To identify gaps in research concerning the pineal gland tumor microenvironment.

Main Methods:

  • Comprehensive literature review of studies on pineal gland tumors.
  • Analysis of cellular components within the pineal gland tumor microenvironment.
  • Examination of molecular factors contributing to the tumor microenvironment.

Main Results:

  • Pineal gland tumors exhibit a heterogeneous cellular composition.
  • Specific molecular signatures within the microenvironment correlate with tumor type and progression.
  • The tumor microenvironment significantly impacts therapeutic strategies and patient outcomes.

Conclusions:

  • Understanding the pineal gland tumor microenvironment is crucial for developing targeted therapies.
  • Further research is needed to fully elucidate the complex interactions within this microenvironment.
  • This review provides a foundation for future investigations into pineal gland tumor biology.