HT-29

Last updated

HT-29 is a human colon cancer cell line used extensively in biological and cancer research. [1]

Contents

Characteristics

The p53 protein, shown interacting with a strand of DNA, is overexpressed in HT-29 cells. P53.png
The p53 protein, shown interacting with a strand of DNA, is overexpressed in HT-29 cells.

Initially derived in 1964 by Jorgen Fogh from a 44-year-old Caucasian female, HT-29 cells form a tight monolayer while exhibiting similarity to enterocytes from the small intestine. HT-29 cells overproduce the p53 tumor antigen, but have a mutation in the p53 gene at position 273, resulting in a histidine replacing an arginine. The cells proliferate rapidly in media containing suramin, with corresponding high expression of the c-myc oncogene. However, c-myc is deregulated, but may have a relation with the growth factor requirements of HT-29 cells. [2]

Applications

In preclinical research, HT-29 cells have been studied for their ability to differentiate and thus simulate real colon tissue in vitro, a characteristic that has made HT-29 useful for epithelial cell research. [3] The cells can also be tested in vivo via xenografts with rodents. HT-29 cells terminally differentiate into enterocytes with the replacement of glucose by galactose in cell culture, and with the addition of butyrate or acids, the differentiation pathways can be closely studied along with their dependence on surrounding conditions. [1] Accordingly, studies of HT-29 cells have shown induced differentation as a result of forskolin, Colchicine, nocodazole, and taxol, [4] with galactose-mediated differentiation also causing the strengthening of adherens junctions. [5]

Culturing

Though HT-29 cells can proliferate in cell culture lacking growth factors with a doubling time of around 4 days, the doubling time can be reduced to one day with added fetal bovine serum. [2] The cells have high glucose consumption, and in standard medium containing 25 mM glucose and 10% serum, remain undifferentiated. [1]

Related Research Articles

<span class="mw-page-title-main">Oncogene</span> Gene that has the potential to cause cancer

An oncogene is a gene that has the potential to cause cancer. In tumor cells, these genes are often mutated, or expressed at high levels.

p53 Mammalian protein found in humans

p53, also known as Tumor protein P53, cellular tumor antigen p53, or transformation-related protein 53 (TRP53) is a regulatory protein that is often mutated in human cancers. The p53 proteins are crucial in vertebrates, where they prevent cancer formation. As such, p53 has been described as "the guardian of the genome" because of its role in conserving stability by preventing genome mutation. Hence TP53 is classified as a tumor suppressor gene.

<span class="mw-page-title-main">Tumor suppressor gene</span> Gene that inhibits expression of the tumorigenic phenotype

A tumor suppressor gene (TSG), or anti-oncogene, is a gene that regulates a cell during cell division and replication. If the cell grows uncontrollably, it will result in cancer. When a tumor suppressor gene is mutated, it results in a loss or reduction in its function. In combination with other genetic mutations, this could allow the cell to grow abnormally. The loss of function for these genes may be even more significant in the development of human cancers, compared to the activation of oncogenes.

<span class="mw-page-title-main">Tumor metabolome</span>

The study of the tumor metabolism, also known as tumor metabolome describes the different characteristic metabolic changes in tumor cells. The characteristic attributes of the tumor metabolome are high glycolytic enzyme activities, the expression of the pyruvate kinase isoenzyme type M2, increased channeling of glucose carbons into synthetic processes, such as nucleic acid, amino acid and phospholipid synthesis, a high rate of pyrimidine and purine de novo synthesis, a low ratio of Adenosine triphosphate and Guanosine triphosphate to Cytidine triphosphate and Uridine triphosphate, low Adenosine monophosphate levels, high glutaminolytic capacities, release of immunosuppressive substances and dependency on methionine.

The MAPK/ERK pathway is a chain of proteins in the cell that communicates a signal from a receptor on the surface of the cell to the DNA in the nucleus of the cell.

Myc is a family of regulator genes and proto-oncogenes that code for transcription factors. The Myc family consists of three related human genes: c-myc (MYC), l-myc (MYCL), and n-myc (MYCN). c-myc was the first gene to be discovered in this family, due to homology with the viral gene v-myc.

<span class="mw-page-title-main">Transcription factor Jun</span> Mammalian protein found in Homo sapiens

Transcription factor Jun is a protein that in humans is encoded by the JUN gene. c-Jun, in combination with protein c-Fos, forms the AP-1 early response transcription factor. It was first identified as the Fos-binding protein p39 and only later rediscovered as the product of the JUN gene. c-jun was the first oncogenic transcription factor discovered. The proto-oncogene c-Jun is the cellular homolog of the viral oncoprotein v-jun. The viral homolog v-jun was discovered in avian sarcoma virus 17 and was named for ju-nana, the Japanese word for 17. The human JUN encodes a protein that is highly similar to the viral protein, which interacts directly with specific target DNA sequences to regulate gene expression. This gene is intronless and is mapped to 1p32-p31, a chromosomal region involved in both translocations and deletions in human malignancies.

<span class="mw-page-title-main">Jun dimerization protein</span> Protein-coding gene in the species Homo sapiens

Jun dimerization protein 2 (JUNDM2) is a protein that in humans is encoded by the JDP2 gene. The Jun dimerization protein is a member of the AP-1 family of transcription factors.

<span class="mw-page-title-main">PLK1</span> Mammalian protein found in Homo sapiens

Serine/threonine-protein kinase PLK1, also known as polo-like kinase 1 (PLK-1) or serine/threonine-protein kinase 13 (STPK13), is an enzyme that in humans is encoded by the PLK1 gene.

<span class="mw-page-title-main">USF1</span> Protein-coding gene in the species Homo sapiens

Upstream stimulatory factor 1 is a protein that in humans is encoded by the USF1 gene.

<span class="mw-page-title-main">GADD45A</span> Protein-coding gene in the species Homo sapiens

Growth arrest and DNA-damage-inducible protein GADD45 alpha is a protein that in humans is encoded by the GADD45A gene.

<span class="mw-page-title-main">NDRG1</span> Protein-coding gene in the species Homo sapiens

Protein NDRG1 is a protein that in humans is encoded by the NDRG1 gene.

<span class="mw-page-title-main">CIP2A</span> Protein-coding gene in the species Homo sapiens

Protein CIP2A also known as cancerous inhibitor of PP2A (CIP2A) is a protein that in humans is encoded by the KIAA1524 gene.

An oncomir is a microRNA (miRNA) that is associated with cancer. MicroRNAs are short RNA molecules about 22 nucleotides in length. Essentially, miRNAs specifically target certain messenger RNAs (mRNAs) to prevent them from coding for a specific protein. The dysregulation of certain microRNAs (oncomirs) has been associated with specific cancer forming (oncogenic) events. Many different oncomirs have been identified in numerous types of human cancers.

mir-145 Non-coding RNA in the species Homo sapiens

In molecular biology, mir-145 microRNA is a short RNA molecule that in humans is encoded by the MIR145 gene. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

miR-203

In molecular biology miR-203 is a short non-coding RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms, such as translational repression and Argonaute-catalyzed messenger RNA cleavage. miR-203 has been identified as a skin-specific microRNA, and it forms an expression gradient that defines the boundary between proliferative epidermal basal progenitors and terminally differentiating suprabasal cells. It has also been found upregulated in psoriasis and differentially expressed in some types of cancer.

In molecular biology mir-885 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

<span class="mw-page-title-main">HCT116 cells</span>

HCT116 is a human colon cancer cell line used in therapeutic research and drug screenings.

hPG80 refers to the extracellular and oncogenic version of progastrin. This name first appeared in a scientific publication in January 2020. Until that date, scientific publications only mention 'progastrin', without necessarily explicitly specifying whether it is intracellular or extracellular in the tumor pathological setting.

References

  1. 1 2 3 Martínez-Maqueda, D; et al. (2015). "HT29 Cell Line". The Impact of Food Bioactives on Health. Springer. pp. 113–124. doi:10.1007/978-3-319-16104-4_11. ISBN   978-3-319-15791-7. PMID   29787047.
  2. 1 2 Coudray, Anne-Marie; et al. (1 December 1989). "Proliferation of the Human Colon Carcinoma Cell Line HT29: Autocrine Growth and Deregulated Expression of the c-myc Oncogene" (PDF). Cancer Research. 49 (23): 6566–6571. PMID   2684395.
  3. Hirn, M; et al. (1988). "HT-29 cells are an in vitro model for the generation of cell polarity in epithelia during embryonic differentiation". Proceedings of the National Academy of Sciences. 85 (1): 136–140. Bibcode:1988PNAS...85..136L. doi: 10.1073/pnas.85.1.136 . PMC   279498 . PMID   3277169.
  4. Cohen, E; et al. (August 1999). "Induced differentiation in HT29, a human colon adenocarcinoma cell line". Journal of Cell Science. 112 (16): 2657–2666. doi:10.1242/jcs.112.16.2657. PMID   10413674.
  5. Gout, S; et al. (1 October 2004). "Early enterocytic differentiation of HT-29 cells: biochemical changes and strength increases of adherens junctions". Experimental Cell Research. 299 (1): 498–510. doi:10.1016/j.yexcr.2004.06.008. PMID   15350547.