A549 cell

A549 cells under DIC microscopy, from a 3-4 days old culture, showing an abundance of intercellular connections, including possible cytonemes, filopodia and other epithelial bridges. (These cells have endocytosed 25x73 nm colloidal gold nanorods.)

A549 cells are adenocarcinomic human alveolar basal epithelial cells, and constitute a cell line that was first developed in 1972 by D. J. Giard, et al. through the removal and culturing of cancerous lung tissue in the explanted tumor of a 58-year-old caucasian male.[1] The cells are used as models for the study of lung cancer and the development of drug therapies against it.[2][3]

Characteristics

A549 cells, as found in the lung tissue of their origin, are squamous and responsible for the diffusion of some substances, such as water and electrolytes, across alveoli. If A549 cells are cultured in vitro, they grow as a monolayer; adherent or attaching to the culture flask.[1] The cells are able to synthesize lecithin and contain high levels of unsaturated fatty acids, which are important to maintain membrane phospholipids.[1] A549 cells are widely used as a type II pulmonary epithelial cell model for drug metabolism and as a transfection host.[4][5] When grown for sufficient long time in cell culture, A549 cells may begin to differentiate, as signaled by the presence of multilamellar bodies.[6]

Usage

A549 cells have served as models of alveolar Type II pulmonary epithelium, finding utility in research examining the metabolic processing of lung tissue and possible mechanisms of drug delivery to the tissue.[3] In context of lung cancer drug development, the cells have served as testing grounds for novel drugs - such as paclitaxel, docetaxel, and bevacizumab - both in vitro and in vivo through cell culture and xenografting, respectively.[7][1] A549 has also been employed in viral research and associated protein expression changes as a consequence of viral infection.[8] Although A549 is a cancer cell line, it has also been studied for its response to tuberculosis, specifically the production of chemokines as it is induced by the invading bacteria.[9]

References

  1. 1 2 3 4 "A549 Cell Line: Human alveolar adenocarcinoma cell line -General Information". Retrieved 3 January 2012.
  2. ↑ Giard, DJ; Aaronson, SA; Todaro, GJ; Arnstein, P; Kersey, JH; Dosik, H; Parks, WP (1973). "In vitro cultivation of human tumors: Establishment of cell lines derived from a series of solid tumors". Journal of the National Cancer Institute. 51 (5): 1417–23. doi:10.1093/jnci/51.5.1417. PMID 4357758.
  3. 1 2 Foster, KA; et al. (15 September 1998). "Characterization of the A549 cell line as a type II pulmonary epithelial cell model for drug metabolism". Experimental Cell Research. 243 (2): 359–366. PMID 9743595.
  4. ↑ abcam.com. "A549 (Human lung adenocarcinoma epithelial cell line) Whole Cell Lysate (ab7910)". Retrieved 3 January 2012.
  5. ↑ ATCC.org. "A549 cell line: CCl-185 Product Description". Retrieved 3 January 2012.
  6. ↑ Cooper, Jim (December 2012). "Cell line profile A549" (PDF). Public Health England. Retrieved 25 June 2018.
  7. ↑ Franklin, Maryland (May 2016). "A549 – A Model For Non-Small Cell Lung Cancer". MiBioresearch. Retrieved 25 June 2018.
  8. ↑ Thomas, LH; Friedland, JS; Sharland, M; Becker, S (1998). "Respiratory Syncytial Virus-Induced RANTES Production from Human Bronchial Epithelial Cells Is Dependent on Nuclear Factor-κB Nuclear Binding and Is Inhibited by Adenovirus-Mediated Expression of Inhibitor of κBα". Journal of Immunology. 161 (2): 1007–16. PMID 9670982.
  9. ↑ Lin, Yuanguang; Zhang, Ming; Barnes, Peter F. (1998). "Chemokine production by a human alveolar epithelial cell line in response to Mycobacterium tuberculosis". Infection and Immunity. 66 (3): 1121–6. PMC 108024. PMID 9488404.


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