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Dichotomous roles of ACBD3 in NSCLC growth and metastasis
Xiaochao Tan1, Chao Wu2, Priyam Banerjee2,3
1Department of Medicine, Tulane University School of Medicine, Louisiana Cancer Research Center, New Orleans, LA, USA. xtan4@tulane.edu.
Abstract:
Lung cancer continues to be the leading cause of cancer-related deaths globally. Unraveling the regulators behind lung cancer growth and its metastatic spread, along with understanding the underlying mechanisms, is crucial for developing novel and effective therapeutic strategies. While much research has focused on identifying potential oncogenes or tumor suppressors, the roles of certain genes can vary depending on the context and may even exhibit contradictory effects. In this study, we demonstrate that acyl-CoA binding domain containing 3 (ACBD3), a Golgi resident protein, promotes primary lung cancer growth by recruiting phosphatidylinositol (PI)-4-kinase IIIβ (PI4KB) to the Golgi, thereby enhancing oncogenic secretion in chromosome 1q-amplified lung cancer cells. Conversely, in chromosome 1q-diploid lung cancer cells, ACBD3 acts as a suppressor of lung cancer metastasis by inhibiting the NOTCH signaling pathway and reducing cancer cell motility. This highlights the intricacy of cancer progression and cautions against simplistic approaches targeting individual oncogenes for cancer therapy.
Insights
Acyl-CoA binding domain containing 3 (ACBD3) protein promotes lung cancer growth in amplified cells but suppresses metastasis in diploid cells, revealing context-dependent gene roles in cancer progression.
Area of Science:
- Molecular oncology
- Cancer biology
- Cell signaling
Background:
- Lung cancer remains a leading global cause of cancer mortality.
- Understanding gene function in cancer is critical for developing targeted therapies.
- Gene roles can be context-dependent, complicating therapeutic strategies.
Purpose of the Study:
- To investigate the dual role of acyl-CoA binding domain containing 3 (ACBD3) in lung cancer.
- To elucidate the mechanisms by which ACBD3 influences lung cancer growth and metastasis.
Main Methods:
- Investigated ACBD3 function in chromosome 1q-amplified and 1q-diploid lung cancer cells.
- Examined ACBD3's interaction with phosphatidylinositol (PI)-4-kinase IIIβ (PI4KB) at the Golgi.
- Assessed the impact of ACBD3 on oncogenic secretion and NOTCH signaling pathway activity.
Main Results:
- ACBD3 promotes primary lung cancer growth in 1q-amplified cells by recruiting PI4KB to the Golgi, enhancing oncogenic secretion.
- ACBD3 suppresses lung cancer metastasis in 1q-diploid cells by inhibiting the NOTCH pathway and reducing cell motility.
- Demonstrates context-specific functions of ACBD3 in lung cancer progression.
Conclusions:
- ACBD3 exhibits opposing roles in lung cancer growth and metastasis based on chromosome 1q copy number.
- The findings highlight the complexity of cancer biology and the need for nuanced therapeutic approaches.
- Context-dependent gene functions necessitate personalized strategies for lung cancer treatment.
