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Relative amounts of antagonistic splicing factors, hnRNP A1 and ASF/SF2, change during neoplastic lung growth: Implications for pre-mRNA processing by Laura K. Zerbe; Irene Pino; Ruben Pio; Pippa F. Cosper; Lori D. Dwyer-Nield; Amy M. Meyer; J. David Port; Luis M. Montuenga; Alvin M. Malkinson is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
What is Relative amounts of antagonistic splicing factors, hnRNP A1 and ASF/SF2, change during neoplastic lung growth: Implications for pre-mRNA processing about?
## Abstract Pre‐mRNA processing is an important mechanism for globally modifying cellular protein composition during tumorigenesis. To understand this process during lung cancer, expression of two key pre‐mRNA alternative splicing factors was compared in a mouse model of early lung carcinogenesis and during regenerative growth following reversible lung injury. Heterogeneous nuclear ribonucleoprotein (hnRNP) A1 and alternative splicing factor/splicing factor 2 (ASF/SF2) act antagonistically to modulate splice site selection. Both hnRNP A1 and ASF/SF2 contents rose in adenomas and during injury‐induced hyperplasia compared to control lungs, as measured by immunoblotting. While both proteins increased similarly during compensatory hyperplasia, hnRNP A1 increased to a much greater extent than ASF/SF2 in tumors, resulting in a 6‐fold increase of the hnRNP A1 to ASF/SF2 ratio. Immunohistochemical analysis showed that hnRNP A1 localized exclusively within tumor nuclei, while ASF/SF2 appeared in cytoplasm and/or nuclei, depending on the growth pattern of the tumor cells. We also demonstrated cancer‐associated changes in the pre‐mRNA alternative splicing of CD44, a membrane glycoprotein inv
Who reads Relative amounts of antagonistic splicing factors, hnRNP A1 and ASF/SF2, change during neoplastic lung growth: Implications for pre-mRNA processing?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- Laura K. Zerbe; Irene Pino; Ruben Pio; Pippa F. Cosper; Lori D. Dwyer-Nield; Amy M. Meyer; J. David Port; Luis M. Montuenga; Alvin M. Malkinson
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0899-1987)
- Published
- 2004
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)