Related Experiment Video
Updated: Jan 27, 2026

A Multiple Integrated Social Stress Model for Psychiatric Disorders in Female C57BL/6J Mice
Published on: July 15, 2025
SKA2/FAM33A: A novel gene implicated in cell cycle, tumorigenesis, and psychiatric disorders
Mengyu Xie1,2, Youquan Bu1
1Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, ChongQing Medical University, Chongqing, 400016, China.
Abstract:
SKA2 (spindle and KT associated 2), also referred to as FAM33A (family with sequence similarity 33, member A), is a recently identified gene involved in cell cycle regulation, and growing evidence is implicating its roles in tumorigenesis and psychiatric disorders. It has been demonstrated that SKA2, along with its coworkers SKA1 and SKA3, constitutes the SKA complex which plays a critical role in the maintenance of the metaphase plate and/or spindle checkpoint silencing during mitosis. SKA2 is over-expressed both in cancer cell lines and clinical samples including small cell lung cancer and breast cancer, whereas downregulation of SKA2 is associated with depression and suicidal ideation. The expression of SKA2 is regulated by transcription factors including NF-κΒ and CREB, miRNAs as well as DNA methylation. In this review, we provide an overview of studies that reveal SKA2 gene and protein characteristics as well as physiological function, with a special focus on its transcription regulatory mechanisms, and also provide a summary regarding the translational opportunity of the SKA2 gene as a clinical biomarker for cancers and psychiatric disorders.
Insights
The spindle and KT associated 2 (SKA2) gene is crucial for cell division and linked to cancer and psychiatric disorders. Its expression is regulated by various factors, highlighting its potential as a clinical biomarker.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- SKA2 (spindle and KT associated 2), also known as FAM33A, is involved in cell cycle regulation.
- SKA2 forms the SKA complex with SKA1 and SKA3, essential for mitotic progression.
- Dysregulation of SKA2 is implicated in tumorigenesis and psychiatric disorders.
Purpose of the Study:
- To review SKA2 gene and protein characteristics.
- To elucidate SKA2's physiological functions and regulatory mechanisms.
- To summarize SKA2's translational potential as a biomarker.
Main Methods:
- Literature review of studies on SKA2.
- Analysis of SKA2's role in cell cycle and mitosis.
- Investigation of SKA2's transcriptional regulation.
Main Results:
- SKA2 is over-expressed in cancers (e.g., lung, breast) but downregulated in depression.
- SKA2 expression is modulated by transcription factors (NF-κΒ, CREB), miRNAs, and DNA methylation.
- SKA2 plays a critical role in maintaining the metaphase plate and spindle checkpoint silencing.
Conclusions:
- SKA2 is a key regulator of cell division with dual roles in cancer and psychiatric conditions.
- Understanding SKA2 regulation offers insights into disease pathogenesis.
- SKA2 holds promise as a diagnostic and prognostic biomarker.
More Related Videos
Related Concept Videos
What is the Cell Cycle?
What is the Cell Cycle?
The Cell Cycle Control System
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and...
The Cell Cycle Control System
Mitogens and the Cell Cycle
Intrinsically Disordered Proteins

