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Myeloid cell leukemia 1 (MCL-1), an unexpected modulator of protein kinase signaling during invasion

Adelaide Ij Young1, Paul Timpson1,2, David Gallego-Ortega1,2

  • 1a Cancer Research Division , Garvan Institute of Medical Research and the Kinghorn Cancer Centre , 384 Victoria Street, Darlinghurst , NSW , Australia.

Cell Adhesion & Migration
|November 24, 2017
PubMed

Insights

Myeloid cell leukemia-1 (MCL-1) protein regulates cancer cell survival and invasion. Inhibiting MCL-1 suppressed breast cancer progression by affecting cytoskeletal remodeling and protein kinase signaling.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Myeloid cell leukemia-1 (MCL-1) is a key regulator of cell survival, closely related to BCL-2.
  • MCL-1 is an emerging therapeutic target for various cancers, including breast cancer.

Purpose of the Study:

  • To investigate the role of MCL-1 in breast cancer progression beyond cell survival.
  • To elucidate the mechanisms by which MCL-1 modulates cellular invasion.

Main Methods:

  • Utilized a MCL-1-specific genetic antagonist in pre-clinical breast cancer models.
  • Analyzed MCL-1's direct binding and phosphorylation effects on Cofilin.
  • Assessed the impact of MCL-1 on SRC family kinases (SFKs) and their downstream targets.

Main Results:

  • Inhibition of MCL-1 effectively suppressed tumor progression in breast cancer models.
  • MCL-1 directly interacts with and alters Cofilin phosphorylation, impacting cytoskeletal remodeling during invasion.
  • MCL-1 modulates SRC family kinases (SFKs) signaling pathways involved in cellular invasion.

Conclusions:

  • MCL-1's functions extend beyond cell survival to directly influence protein kinase signaling during cancer cell invasion.
  • Targeting MCL-1 offers a promising therapeutic strategy for breast cancer by impacting both survival and invasion mechanisms.
Keywords:
Myeloid cell leukemia 1SRC family kinasescancerinvasionmetastasisprotein kinase signaling

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