Name: Exploring the Role of FAM83A in Cervical Cancer (Video) | JoVE
Uploaded: 2024-02-09T13:00:00
Description: Watch this Scientific Journal Video about Exploring the Role of FAM83A in Cervical Cancer at JoVE.com

This work was supported by the Jingzhou Science and Technology Bureau Foundation (no. 2020HC06).

The study was completely in conformity with the publication guidelines provided by TCGA (https://cancergenome.nih.gov/publications/publicationguidelines). See the&#160;Table of Materials for details related to all materials, reagents, and instruments used in this protocol.
1. Data source and bioinformatics analysis
<ol>
	<li>Obtain RNA sequencing data from the Cancer Genome Atlas (TCGA) database (https://cancergenome.nih.gov)&#160;for cluster analysis. Use the GEPIA (http://...

Validation of FAM83A as a Target Gene in Cervical Cancer

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	<li>Arbyn, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Estimates+of+incidence+and+mortality+of+cervical+cancer+in+2018:+a+worldwide+analysis.">Estimates of incidence and mortality of cervical cancer in 2018: a worldwide analysis.</a> Lancet Global Health. 8 (2), e191-e203 (2020).</li><li>Cohen, P. A., Jhingran, A., Oaknin, A., Denny, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cervical+cancer.">Cervical cancer.</a> Lancet. 393 (10167), 169-182 (2019).</li><li>Cipriano, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Conserved+oncogenic+behavior+of+the+fam83+family+regulates+mapk+signaling+in+human+cancer.">Conserved oncogenic behavior of the fam83 family regulates mapk signaling in human cancer.</a> Molecular Cancer Research. 12 (8), 1156-1165 (2014).</li><li>Snijders, A. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=FAM83+family+oncogenes+are+broadly+involved+in+human+cancers:+an+integrative+multi-omics+approach.">FAM83 family oncogenes are broadly involved in human cancers: an integrative multi-omics approach.</a> Molecular Oncology. 11 (2), 167-179 (2017).</li><li>Gan, J., Meng, Q., Li, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Corrigendum:+systematic+analysis+of+expression+profiles+and+prognostic+significance+for+fam83+family+in+non-small-cell+lung+cancer.">Corrigendum: systematic analysis of expression profiles and prognostic significance for fam83 family in non-small-cell lung cancer.</a> Frontiers In Molecular Biosciences. 8, 653454 (2021).</li><li>Jin, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comprehensive+analysis+of+the+expression,+prognostic+significance,+and+function+of+fam83+family+members+in+breast+cancer.">Comprehensive analysis of the expression, prognostic significance, and function of fam83 family members in breast cancer.</a> World Journal of Surgical Oncology. 20 (1), 172 (2022).</li><li>Lin, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+prognostic+biomarkers+among+fam83+family+genes+in+human+ovarian+cancer+through+bioinformatic+analysis+and+experimental+verification.">Identification of prognostic biomarkers among fam83 family genes in human ovarian cancer through bioinformatic analysis and experimental verification.</a> Cancer Management and Research. 13, 8611-8627 (2021).</li><li>Ma, Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+prognostic+and+therapeutic+biomarkers+among+fam83+family+members+for+pancreatic+ductal+adenocarcinoma.">Identification of prognostic and therapeutic biomarkers among fam83 family members for pancreatic ductal adenocarcinoma.</a> Disease Markers. 2021, 6682697 (2021).</li><li>Xu, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genome-wide+profiling+of+cervical+RNA-binding+proteins+identifies+human+papillomavirus+regulation+of+rnaseh2a+expression+by+viral+e7+and+e2f1.">Genome-wide profiling of cervical RNA-binding proteins identifies human papillomavirus regulation of rnaseh2a expression by viral e7 and e2f1.</a> mBio. 10 (1), e02687-e02618 (2019).</li><li>Wong, R. 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The investigation of tumor target genes is of utmost importance for both the prevention and treatment of cervical cancer. Understanding the specific genes that play a significant role in cervical cancer development and progression provides valuable insight into the underlying molecular mechanisms of the disease. Furthermore, identifying these target genes can lead to the development of novel therapeutic strategies and targeted therapies. In this study, we describe the use of TCGA dataset analysis to identify FAM83A <...

Cervical cancer is a global concern as it is one of the leading types of gynecological malignancy worldwide and is the major cause of cancer-related mortality in women1. Radical surgery and chemoradiotherapy are associated with high cure rates at the primary stage. However, treatment outcomes for patients at the advanced stage of cervical cancer who develop metastatic disease are very unfavorable2. Therefore, it is crucial to further understand the biological mechanisms underlying the migration and invasion of cervical cancer cells and identify potential therapeutic targets for the prevention and treatment of this disease.
Identifying target genes involved in cancer progression and finding ways to inhibit their expression or action present promising treatment options. In this study, we identified FAM83 as a cancer-causing gene and further investigated its inhibitory effects on C33a and HeLa cells. FAM83 family oncogenes (FAM83A-H) are widely reported in human cancers3,4. Recently, FAM83A was reported to be upregulated in lung5, breast6, ovarian7, and pancreatic8 cancers,indicating that FAM83A plays an important role in cancer progression via promoting the proliferation, invasion, stem-cell-like traits, and drug resistance in the tumor cells. Importantly, FAM83A was identified as one of the novel candidate genes associated with cervical lesion progression and carcinogenesis9. Despite the confirmation of elevated FAM83A expression in human cervical cancer cells, the specific impact and underlying mechanisms of FAM83A in cervical cancer remain unclear.
In this study, we outline the protocols involved in the identification of FAM83A as a tumor target gene in cervical cancer and use a small interfering RNA (siRNA) for the knockdown of the FAM83A gene in HeLa and C33a cells. 5-Ethynyl-2&#39;-deoxyuridine (EdU) staining was performed to determine the effects on tumor cell proliferation, while wound healing and porous membrane insert assays helped evaluate tumor cell migration and invasion abilities.
Western blotting was performed to determine the levels of apoptosis-related proteins, and JC-1 staining was employed to evaluate mitochondrial function alterations. Thus, we reported that FAM83A plays a critical role in cell proliferation, metastasis, and invasion in cervical cancer. Through PI3K/AKT-pathway-associated mitochondrial dysfunction and apoptosis, FAM83A knockdown sensitized cervical cancer cells to cisplatin (diaminedichloroplatinum, DDP). This study provides a new target for cervical cancer and possibly other cancers and a reference for the development of strategies to overcome the resistance of cancer cells to certain chemotherapeutic drugs.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr >
			<td colspan="4" >Cells and Medium Formulation</td>
		</tr>
		<tr >
			<td >C33a</td>
			<td >American Type Culture Collection</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Hela</td>
			<td >American Type Culture Collection</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Modified medium</td>
			<td ></td>
			<td ></td>
			<td >10% fetal bovine serum and + antibiotics (100 U/mL penicillin and 100 U/mL streptomycin)</td>
		</tr>
		<tr >
			<td >Antibody Information</td>
			<td ></td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >AKT</td>
			<td >4691, Cell Signaling Technology Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >Bcl2&#160;</td>
			<td >26593-1-AP, Proteintech Group, Inc</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >Caspase 3</td>
			<td >19677-1-AP, Proteintech Group, Inc</td>
			<td ></td>
			<td >&#8216;1:2,000</td>
		</tr>
		<tr >
			<td >cleaved-caspase3</td>
			<td >abs132005; Absin Bioscience Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >Cytc</td>
			<td >10993-1-AP; Proteintech Group</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >GAPDH&#160;</td>
			<td >10494-1-AP, Proteintech Group, Inc.</td>
			<td ></td>
			<td >&#8216;1:8,000</td>
		</tr>
		<tr >
			<td >mTOR</td>
			<td >2983, Cell Signaling Technology Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >PI3K</td>
			<td >4292, Cell Signaling Technology Inc</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >p-AKT&#160;</td>
			<td >4060, Cell Signaling Technology Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >p-mTOR (Ser2448)</td>
			<td >#5536, Cell Signaling Technology Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >p-PI3K p85 subunit</td>
			<td >17366, Cell Signaling Technology Inc.</td>
			<td ></td>
			<td >&#8216;1:1,000</td>
		</tr>
		<tr >
			<td >Secondary antibodies</td>
			<td >GB23303, Servicebio</td>
			<td ></td>
			<td >&#8216;1:2,000</td>
		</tr>
		<tr >
			<td >Materials</td>
			<td ></td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >6-well plate</td>
			<td >Corning, NPY</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Alexa Fluor 555</td>
			<td >Beyotime</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >BCA Protein assay kit&#160;</td>
			<td >Beyotime, China&#160;</td>
			<td ></td>
			<td >P0011</td>
		</tr>
		<tr >
			<td >ChemiDoc XRS Imager System&#160;</td>
			<td >BioRad</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Enhanced chemiluminescence detection kit&#160;</td>
			<td >Servicebio, Inc.,China</td>
			<td ></td>
			<td >cat. no. G2014</td>
		</tr>
		<tr >
			<td >Fluorescence microscope&#160;</td>
			<td >Olympus Corporation, Tokyo, Japan</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td rowspan="2" >Hifair II 1st Strand cDNA Synthesis Super Mix&#160;</td>
			<td rowspan="2" >11123ES60, Yeasen Biotech o., Ltd., China</td>
			<td rowspan="2" ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Inverted microscope&#160;</td>
			<td >Olympus, Tokyo, Japan;</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Millicell transwell inserts&#160;</td>
			<td >Millipore,Bedford, MA, USA</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >Mitochondrial membrane potential assay kit&#160;</td>
			<td >Beyotime, China</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >PMSF&#160;</td>
			<td >ST506, Beyotime Biotech, Jiangsu, China</td>
			<td ></td>
			<td >#ST506</td>
		</tr>
		<tr >
			<td rowspan="2" >Real-time quantitative PCR instrument&#160;</td>
			<td rowspan="2" >Applied Biosystems, Thermo Fisher Scientific. China.</td>
			<td rowspan="2" ></td>
			<td ></td>
		</tr>
		<tr >
			<td >RIPA Lysis Buffer&#160;</td>
			<td >Beyotime Biotech, Jiangsu, China</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td >TRIzol reagent</td>
			<td >Invitrogen</td>
			<td ></td>
			<td >15596026</td>
		</tr>
		<tr >
			<td >TRIzol reagent&#160;</td>
			<td >Takara Bio Inc., Otsu, Japan</td>
			<td ></td>
			<td ></td>
		</tr>
		<tr >
			<td colspan="2" >Software</td>
			<td></td>
			<td></td>
		</tr>
		<tr >
			<td >Image-Pro</td>
			<td >&#160;plus 6.0&#160;&#160;</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

knockdown of fam83a to verify its role in cervical cancer cell growth and cisplatin sensitivity

The exploration of tumor target genes holds paramount importance for the prevention and treatment of cervical cancer. In this study, we outline the steps involved in the identification of a tumor target gene FAM83A in cervical cancer. First, the Cancer Genome Atlas dataset was employed to validate the expression and prognostic significance of FAM83A in women. A small interfering RNA (siRNA) was used for knockdown of the FAM83A gene in HeLa and C33a cells. Next, 5-ethynyl-2&#39;-deoxyuridine (EdU) staining was conducted to determine the effects on the proliferation capabilities of the tumor cells. Wound healing and porous membrane insert assays were performed to evaluate tumor cell migration and invasion abilities.
Western blotting was used to quantify apoptosis-related protein levels. JC-1 staining was employed to evaluate mitochondrial function alterations. Furthermore, cisplatin (diaminedichloroplatinum, DDP) intervention was used to assess the therapeutic potential of the target gene. Flow cytometry and colony formation assays were conducted to further validate the anticancer characteristics of the gene. As a result, FAM83A knockdown was shown to inhibit the proliferation, migration, and invasion of cervical cancer cells and sensitize these cells to cisplatin. These comprehensive methodologies collectively validate FAM83A as a tumor-associated target gene, holding promise as a potential therapeutic target in the prevention and treatment of cervical cancer.

Knockdown of FAM83A to Verify Its Role in Cervical Cancer Cell Growth and Cisplatin Sensitivity

TCGA database analysis and PCR validation
From the TCGA database analysis, we conducted a comparative analysis of mRNA expression levels in 306 cervical cancer cell samples and 13 normal cell samples to investigate the differential expression of FAM83A. FAM83A was upregulated in cervical cancer, while its expression in normal cervical tissue was negligible (Figure 1A</stron...

Watch this Scientific Journal Video about Exploring the Role of FAM83A in Cervical Cancer at JoVE.com

Exploring the Role of FAM83A in Cervical Cancer (Video) | JoVE

Here, we show the procedures for FAM83A knockdown; the assays to detect its effects on proliferation, migration, and invasion of cervical cancer cells; and the sensitization of these cells to cisplatin. This study provides a promising target gene for cervical cancer and a reference for further drug research.

The exploration of tumor target genes holds paramount importance for the prevention and treatment of cervical cancer. In this study, we outline the steps ...