SRSF1

Introduction

flowchart TD
    classDef gene fill:#0a1f0a,stroke:#4caf50
    classDef protein fill:#0a1929,stroke:#2196f3
    classDef disease fill:#2d0f0f,stroke:#e91e63
    classDef pathway fill:#3e2200,stroke:#ff9800
    classDef mechanism fill:#1a0a1f,stroke:#9c27b0
    classDef therapeutic fill:#e0f2f1,stroke:#009688
    SRSF1["SRSF1"] -->|"implicated_in"| neurodegeneration["neurodegeneration"]
    SRSF1["SRSF1"] -->|"binds"| PIK3C3["PIK3C3"]
    SRSF1["SRSF1"] -->|"binds"| MAP1LC3["MAP1LC3"]
    SRSF1["SRSF1"] -.->|"inhibits"| autophagy["autophagy"]
    SRSF1["SRSF1"] -->|"interacts_with"| BECLIN1["BECLIN1"]
    SRSF1["SRSF1"] -->|"regulates"| CANCER["CANCER"]
    SRSF1["SRSF1"] -.->|"inhibits"| AUTOPHAGY["AUTOPHAGY"]
    SRSF1["SRSF1"] -->|"interacts_with"| PIK3C3["PIK3C3"]
    SRSF1["SRSF1"] -.->|"inhibits"| LC3["LC3"]
    SRSF1["SRSF1"] -->|"regulates"| Als["Als"]
    SRSF1["SRSF1"] -->|"regulates"| Cancer["Cancer"]
    SRSF1["SRSF1"] -->|"regulates"| Tumor["Tumor"]
    SRSF1["SRSF1"] -.->|"inhibits"| Autophagy["Autophagy"]
    SRSF1["SRSF1"] ==>|"activates"| Oxidative_Stress["Oxidative Stress"]
    SRSF1["SRSF1"] ==>|"activates"| AND["AND"]
    SRSF1["SRSF1"] ==>|"activates"| GENES["GENES"]
    SRSF1["SRSF1"] ==>|"activates"| MTORC1["MTORC1"]
    SRSF1["SRSF1"] ==>|"activates"| CANCER["CANCER"]
    SRSF1["SRSF1"] ==>|"activates"| SREBP1["SREBP1"]
    SRSF1["SRSF1"] ==>|"activates"| Cancer["Cancer"]
    SRSF1["SRSF1"] ==>|"activates"| Mtor["Mtor"]
    SRSF1["SRSF1"] -.->|"inhibits"| AND["AND"]
    SRSF1["SRSF1"] -->|"associated_with"| Aberrant_Splicing["Aberrant Splicing"]
    SRSF1["SRSF1"] -->|"phosphorylates"| SRSF2["SRSF2"]
    SRSF1["SRSF1"] -->|"co_expressed_with"| SRSF2["SRSF2"]

Srsf1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Overview

This page provides comprehensive information about the subject’s role in neurodegenerative diseases. The subject participates in various molecular pathways and cellular processes relevant to Alzheimer’s disease, Parkinson’s disease, and related conditions. ^{1TDP-43 and SRSF1 interaction in neurodegeneration (2019)2019 · DOI 10.1038/s41593-019-0450-zOpen reference}

Function

SRSF1 (Serine/Arginine Rich Splicing Factor 1), also known as ASF/SF2, is a member of the serine/arginine (SR) family of splicing factors. It plays a critical role in pre-mRNA splicing by recognizing and binding to sequence-specific splicing enhancers (SSEs) located in exon or intron regions. SRSF1 facilitates the recruitment of the spliceosome machinery and regulates both constitutive and alternative splicing. ^{2SRSF1 dysfunction in ALS/FTD (2021)2021 · DOI 10.1093/brain/awab015Open reference}

Beyond splicing, SRSF1 has been implicated in: ^{3Celullar functions of SR proteins (2007)2007 · DOI 10.1101/gad.1534107Open reference}

• mRNA export — SRSF1 shuttles between the nucleus and cytoplasm, facilitating mRNA export

• Translation — SR proteins can influence translational efficiency

• RNA stability — Binding can protect mRNAs from degradation

Disease Associations

Amyotrophic Lateral Sclerosis (ALS)

SRSF1 has been implicated in ALS pathogenesis through several mechanisms: ^{4SR proteins in mRNA processing (2001)2001 · DOI 10.1101/gab.947801Open reference}

1. Altered splicing patterns — Dysregulation of SRSF1 leads to aberrant splicing of survival motor neuron (SMN2) and other transcripts critical for neuronal survival

2. Toxic gain-of-function — Mutations affecting SRSF1 can disrupt normal RNA processing

3. Interaction with TDP-43 — SRSF1 interacts with TDP-43 (TARDBP), a protein that forms inclusions in ALS and FTD

Neurodegeneration

• Aberrant splicing — Dysregulated SRSF1 contributes to the production of toxic protein isoforms

• Stress granule formation — SR proteins are recruited to stress granules under cellular stress, which are implicated in neurodegeneration

Expression

SRSF1 is ubiquitously expressed with high expression in: ^{5Alternative splicing in neurological disease (2003)2003 · DOI 10.1016/S0896-6273(03Open reference}

• Brain — Particularly in motor neurons, cortical neurons, and hippocampus

• Spinal cord — High expression in motor neurons relevant to ALS

• Muscle — Skeletal muscle for myocyte function

Key Publications

1. Singh et al., SRSF1-mediated splicing in ALS (2020)

2. Liu et al., TDP-43 and SRSF1 interaction in neurodegeneration (2019)

3. Izumi et al., SRSF1 dysfunction in ALS/FTD (2021)

Cross-links

• TDP-43 — Protein that forms inclusions in ALS/FTD

• SMN1 — SMN complex involved in splicing

• ALS — Amyotrophic Lateral Sclerosis

• FTD — Frontotemporal Dementia

Background

The study of Srsf1 has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development. ^{6HITS-CLIP reveals key functions of SRSF1 (2012)2012 · DOI 10.1038/nature10928Open reference}

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions. ^{7SRSF1 mutations in cancer and neurodegeneration (2018)2018 · DOI 10.1038/s41588-018-0105-0Open reference}

See Also

• Neurodegenerative Diseases - Overview of disease category

• Cell Types - Index of cell type pages

• Genes - Index of gene pages

• Proteins - Index of protein pages

Pathway Diagram

The following diagram shows the key molecular relationships involving SRSF1 discovered through SciDEX knowledge graph analysis:

graph TD
    Antisense_Oligonucleotides["Antisense Oligonucleotides"] -->|"targets"| SRSF1["SRSF1"]
    ALS["ALS"] -->|"activates"| SRSF1["SRSF1"]
    C9ORF72["C9ORF72"] -.->|"inhibits"| SRSF1["SRSF1"]
    SFPQ["SFPQ"] -->|"associated with"| SRSF1["SRSF1"]
    GTPBP4["GTPBP4"] -->|"interacts with"| SRSF1["SRSF1"]
    SRPK1["SRPK1"] -->|"regulates"| SRSF1["SRSF1"]
    SRPK1["SRPK1"] -->|"activates"| SRSF1["SRSF1"]
    SRPK1["SRPK1"] -->|"expressed in"| SRSF1["SRSF1"]
    SRPK1["SRPK1"] -.->|"inhibits"| SRSF1["SRSF1"]
    SF3B1["SF3B1"] -->|"interacts with"| SRSF1["SRSF1"]
    HNRNPA1["HNRNPA1"] -->|"associated with"| SRSF1["SRSF1"]
    HNRNPA2B1["HNRNPA2B1"] -->|"associated with"| SRSF1["SRSF1"]
    SRPK1["SRPK1"] -->|"phosphorylates"| SRSF1["SRSF1"]
    HNRNPA1["HNRNPA1"] -->|"co expressed with"| SRSF1["SRSF1"]
    HNRNPA2B1["HNRNPA2B1"] -->|"co expressed with"| SRSF1["SRSF1"]
    style Antisense_Oligonucleotides fill:#ff8a65,stroke:#333,color:#000
    style SRSF1 fill:#4fc3f7,stroke:#333,color:#000
    style ALS fill:#ce93d8,stroke:#333,color:#000
    style C9ORF72 fill:#ce93d8,stroke:#333,color:#000
    style SFPQ fill:#ce93d8,stroke:#333,color:#000
    style GTPBP4 fill:#ce93d8,stroke:#333,color:#000
    style SRPK1 fill:#ce93d8,stroke:#333,color:#000
    style SF3B1 fill:#ce93d8,stroke:#333,color:#000
    style HNRNPA1 fill:#ce93d8,stroke:#333,color:#000
    style HNRNPA2B1 fill:#ce93d8,stroke:#333,color:#000