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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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The normal, a continuous distribution, is the most important of all the distributions. Its graph is a bell-shaped symmetrical curve, which is observed in almost all disciplines. Some of these include psychology, business, economics, the sciences, nursing, and, of course, mathematics. Some instructors may use the normal distribution to help determine students’ grades. Most IQ scores are normally distributed. Often real-estate prices fit a normal distribution. The normal distribution is...
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Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
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Involvement of CXCR4 in Normal and Abnormal Development.

Nanako Kawaguchi1, Ting-Ting Zhang2, Toshio Nakanishi3

  • 1Department of Pediatric Cardiology, Tokyo Women's Medical University, Tokyo 162-8666, Japan. nanako.res@gmail.com.

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The stromal cell-derived factor (SDF)-1/CXC motif chemokine receptor type 4 (CXCR4) axis regulates hematopoietic stem cell homing and migration. This axis also influences stemness maintenance, differentiation, and is implicated in cancer development and other pathologies.

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CXCL12CXCR4SDF-1cancerpulmonary hypertensionstem cell

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Oncology

Background:

  • CXC motif chemokine receptor type 4 (CXCR4) is crucial for normal development and oncogenesis.
  • Stromal cell-derived factor (SDF)-1, also known as CXC motif ligand (CXCL) 12, is the ligand for CXCR4.
  • The SDF-1/CXCR4 axis governs hematopoietic stem cell homing and migration within bone marrow niches.

Purpose of the Study:

  • To summarize the diverse functions of CXCR4 in biological processes.
  • To elucidate the molecular signature of CXCR4 and its role in normal and abnormal cellular events.
  • To review the involvement of CXCR4 in stemness, differentiation, carcinogenesis, and other pathologies.

Main Methods:

  • Literature review and synthesis of existing research reports.
  • Analysis of molecular pathways involving CXCR4 and its ligand SDF-1.
  • Examination of CXCR4's role in stem cell biology and disease pathogenesis.

Main Results:

  • The SDF-1/CXCR4 axis regulates stem cell homing and migration, both within and outside the bone marrow.
  • CXCR4 is implicated in maintaining stemness and influencing cell differentiation.
  • CXCR4 plays a significant role in multiple carcinogenic pathways and other pathologies.

Conclusions:

  • The SDF-1/CXCR4 axis is a key regulator of stem cell behavior and tissue microenvironments.
  • CXCR4's dual role in normal development (stemness, differentiation) and abnormal conditions (cancer) highlights its therapeutic potential.
  • Understanding CXCR4's molecular functions is critical for addressing various diseases, including cancer.