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Related Experiment Video

Updated: Oct 17, 2025

Mammosphere Formation Assay from Human Breast Cancer Tissues and Cell Lines

Mammosphere Formation Assay from Human Breast Cancer Tissues and Cell Lines

Published on: March 22, 2015

Yes, MAM!

Robert E Means¹, Samuel G Katz¹

¹Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.

Molecular & Cellular Oncology

|October 7, 2021

Summary

This summary is machine-generated.

The BCL-2 family protein BOK is located in mitochondria-associated membranes (MAMs), regulating calcium transfer and cell death. Its presence impacts MAM structure and function, crucial for apoptosis.

Keywords:

BCL-2 BOK MAM MERC apoptosis calcium

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Area of Science:

Cell biology
Mitochondrial function
Apoptosis regulation

Background:

The BCL-2 family controls cell death pathways at the mitochondria.
Mitochondria-associated membranes (MAMs) are critical contact sites between the endoplasmic reticulum (ER) and mitochondria.
MAMs play roles in calcium signaling and organelle crosstalk.

Purpose of the Study:

To investigate the role of the protein BOK within MAMs.
To determine BOK's function in regulating ER-mitochondria calcium transfer.
To understand BOK's impact on MAM structure and apoptosis.

Main Methods:

Immunofluorescence microscopy to localize BOK within MAMs.
Calcium imaging to assess ER-mitochondria calcium transfer.
Analysis of MAM components and mitochondrial-ER contact site (MERC) structure.

Main Results:

BOK was found to be present within MAMs.
BOK regulates calcium (Ca2+) transfer from the ER to mitochondria.
BOK influences MAM composition and MERC structure, affecting apoptosis.

Conclusions:

BOK is a key regulator of MAMs and ER-mitochondria communication.
BOK's localization in MAMs is essential for its role in calcium homeostasis and apoptosis.
Targeting BOK in MAMs could offer therapeutic strategies for diseases involving apoptosis.