Related Experiment Video

Updated: May 30, 2026

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
09:04

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells

Published on: May 22, 2014

A Role for PML in Innate Immunity

Andrea Lunardi1, Mirella Gaboli, Marco Giorgio

  • 1Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.

Genes & Cancer
|July 23, 2011
PubMed

Insights

The promyelocytic leukemia (PML) gene is crucial for innate immunity, as Pml(-/-) mice develop lethal botryomycosis due to impaired macrophage function. PML also influences Toll-like receptor signaling and cytokine production.

Area of Science:

  • Immunology
  • Molecular Biology
  • Oncology

Background:

  • The promyelocytic leukemia (PML) gene is known for its tumor suppressor functions.
  • PML's role in immune response, particularly viral infections, is less understood.
  • PML is implicated in cellular processes like growth suppression, apoptosis, and senescence.

Purpose of the Study:

  • To investigate the role of the PML gene in innate immune responses.
  • To explore the function of PML in macrophage activation and microbial clearance.
  • To understand PML's involvement in Toll-like receptor (TLR) signaling pathways.

Main Methods:

  • Utilized Pml(-/-) knockout mice to study PML deficiency.
  • Observed spontaneous development of botryomycosis (BTM) in Pml(-/-) mice.
  • Assessed macrophage function, cytokine/chemokine production, and response to lipopolysaccharide (LPS).

Main Results:

  • Pml(-/-) mice spontaneously developed lethal botryomycosis (BTM), a granulomatous lesion.
  • Macrophages in Pml(-/-) mice exhibited impaired activation and failed to clear microorganisms.
  • Pml(-/-) mice showed resistance to LPS-induced septic shock due to defective cytokine/chemokine production, indicating a role in TLR/NF-κB signaling.

Conclusions:

  • PML plays a fundamental role in innate immunity, particularly in macrophage activation and host defense against microbial pathogens.
  • PML deficiency leads to impaired immune responses and susceptibility to infections like botryomycosis.
  • PML may have context-dependent proto-oncogenic roles in certain cellular and pathological conditions.
Keywords:
PMLbotryomycosisinnate immunity

More Related Videos

Myeloid Innate Signaling Pathway Regulation by MALT1 Paracaspase Activity07:09

Myeloid Innate Signaling Pathway Regulation by MALT1 Paracaspase Activity

Published on: January 7, 2019

Assessing the Development of Murine Plasmacytoid Dendritic Cells in Peyer's Patches Using Adoptive Transfer of Hematopoietic Progenitors13:34

Assessing the Development of Murine Plasmacytoid Dendritic Cells in Peyer's Patches Using Adoptive Transfer of Hematopoietic Progenitors

Published on: March 17, 2014

Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Immune Surveillance by NK Cells and Phagocytes01:25

Immune Surveillance by NK Cells and Phagocytes

Immune surveillance is an integral part of the innate immune system, involving the continuous monitoring of peripheral tissues to detect and respond to pathogens, infected cells, or cancerous cells. This surveillance is conducted primarily by natural killer (NK) cells and phagocytes, which employ distinct but complementary mechanisms to identify and eliminate threats.
Natural Killer Cells: The Fast Responders
NK cells are large granular lymphocytes found in the blood and lymphatic system. These...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...