Home » Mechanism miRNA molecules in cancer induction

Mechanism miRNA molecules in cancer induction

• The miRNA molecules functionally regulate by integrating with pathways of cell proliferation. The downregulation of miRNA molecules is involved in the evasion and inhibition of growth, thereby sustaining the signaling mechanism responsible for the cancer cell proliferation.

• Many miRNA molecules have been identified that are involved in cancer cell proliferation. For example, the miRNA-17 inhibits the expression of elongation factor 2 (E2F-1). This miRNA cluster induces the breakage of E2F-1 and makes them the functional domain. The miRNA-17 also regulates E2F-2 and E2F-3 factors. These transcription factors also cause miRNA-17 cluster’s expression, hence a feedback mechanism is maintained. Hence the miRNA-17 supports the development of many tumors and alters the feedback mechanism thereby promoting cell proliferation.

Don't use plagiarized sources. Get Your Custom Essay on
Mechanism miRNA molecules in cancer induction
Just from $9/Page
Order Essay

• The other example is miRNA-221, which was found to target the CDK inhibitor in glioblastoma cell types. The overexpression of these miRNA molecules increases the rate of cell proliferation and on the other hand, their down-regulation is induced by the cell cycle especially at the G1 stage. Hence, this gets arrested in cancer cell division. Some of the miRNA expression (miRNA-302, miRNA-663) also regulates certain oncogenic proteins such as p16INK4a, p27Kip1, and p21CIP1. The miRNA 663 was found to be expressed highly in nasopharyngeal carcinoma. Another miRNA molecule (miRNA-545) induces the arresting of the cell cycle in lung cancer cell types.

Role of miRNA in cancer metastasis:
• Metastasis is a complex dynamic process in cancer development. For example, in the case of EMT (epithelial-mesenchymal transition), a key step in metastasis is enhanced by the expression of E-cadherin and its associated gene activation that induces cancer cell motility and invasion.

• EMT cell invasion is regulated by TGF-beta and other important transcription factors such as SNAIL, TWIST, and ZEB. The miRNA regulated by the TGF-beta facilitates the metastasis in advanced stages in certain malignant disorders (for example miRNA-155). This molecule is over expressed and gets activated by TGF-beta, SMAD-4 signaling pathways. This miRNA molecule also induces EMT by acting on RhoA-dependent GTPases that is a key regulatory enzyme in cell polarity determination and formation of cell tight junctions, cell migration, and cancer invasion.

• On the other hand, certain miRNA molecules affect EMT that inhibits E-cadherin expression by ZEB1 and ZEB2 deactivation. The miRNA-200 transcript is suppressed by ZEB-1 AND ZEB-2 factors that form a loop of negative feedback between ZEB1 and ZEB2 and with the miRNA200 clusters. This mRNA-200 is downregulated in the cells of breast cancer along with an increase in its activity that represents mesenchymal phenotype. Hence an overexpression of miRNA-200 in E-cadherin’s mesenchymal expression induces the phenotype by increasing the rate of EMT invasion.

• The miRNA-203 is greatly suppressed due to its specific promoter’s hypermethylation in the cells of breast cancer. The restoration of miRNA-203 is brought about by the inhibition of tumor cells in lung metastasis by downregulating the SNA12 that suggests that miRNA-203 has the main role in cancer metastasis and EMT. Other miRNAs such as miRNA212, miRNA-9, and miRNA-9 are highly expressed by the activation of c-Myc proteins.

Role of miRNA in angiogenesis:
• The process of angiogenesis is an important mechanism in cancer metastasis that is achieved by the oxygen intake and absorption of more nutrients. Once the metastasis progresses, it decreases the oxygen level in neighboring tissues that leads to hypoxia in tissue cells. The hypoxia-inducible factor (HIF) is a transcription factor that is involved in the induction of many genes’ expression covering miRNA molecules too. The vascular epithelial growth factor (VEGF) is the main factor for causing angiogenesis, that is, forming new blood vessels.

• The miRNA hits HIF of the VEGF signaling mechanisms, for example, miRNA-210 gets constant during hypoxia. This molecule promotes angiogenesis both by targeting TK-eprin-A3 (tyrosine kinase) and enhances the expression of VEGF and VEGF-R2. The other miRNA molecule called miRNA-424 induces hypoxia in certain endothelial cells and increases the rate of angiogenesis.

• Another molecule miRNA-107 inhibits the HIF1beta-protein hence the miRNA-107 promoter is down-regulated, hence increase the tumor angiogenesis. The exosomal miRNA in cancer cells helps in modulating the tumor environment. The miRNA-135b is upregulated in hypoxia resistant multiple myeloma cancer cells, thereby suppressing the inhibitor of the HIF-1 signaling mechanism. Hence it is considered that the exosomal miRNA-135b may be considered as a drug target in the treatment and management of angiogenesis of multiple myelomas.

Get Professional Assignment Help Cheaply

Buy Custom Essay

Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?

Whichever your reason is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.

Why Choose Our Academic Writing Service?

  • Plagiarism free papers
  • Timely delivery
  • Any deadline
  • Skilled, Experienced Native English Writers
  • Subject-relevant academic writer
  • Adherence to paper instructions
  • Ability to tackle bulk assignments
  • Reasonable prices
  • 24/7 Customer Support
  • Get superb grades consistently

Online Academic Help With Different Subjects


Students barely have time to read. We got you! Have your literature essay or book review written without having the hassle of reading the book. You can get your literature paper custom-written for you by our literature specialists.


Do you struggle with finance? No need to torture yourself if finance is not your cup of tea. You can order your finance paper from our academic writing service and get 100% original work from competent finance experts.

Computer science

Computer science is a tough subject. Fortunately, our computer science experts are up to the match. No need to stress and have sleepless nights. Our academic writers will tackle all your computer science assignments and deliver them on time. Let us handle all your python, java, ruby, JavaScript, php , C+ assignments!


While psychology may be an interesting subject, you may lack sufficient time to handle your assignments. Don’t despair; by using our academic writing service, you can be assured of perfect grades. Moreover, your grades will be consistent.


Engineering is quite a demanding subject. Students face a lot of pressure and barely have enough time to do what they love to do. Our academic writing service got you covered! Our engineering specialists follow the paper instructions and ensure timely delivery of the paper.


In the nursing course, you may have difficulties with literature reviews, annotated bibliographies, critical essays, and other assignments. Our nursing assignment writers will offer you professional nursing paper help at low prices.


Truth be told, sociology papers can be quite exhausting. Our academic writing service relieves you of fatigue, pressure, and stress. You can relax and have peace of mind as our academic writers handle your sociology assignment.


We take pride in having some of the best business writers in the industry. Our business writers have a lot of experience in the field. They are reliable, and you can be assured of a high-grade paper. They are able to handle business papers of any subject, length, deadline, and difficulty!


We boast of having some of the most experienced statistics experts in the industry. Our statistics experts have diverse skills, expertise, and knowledge to handle any kind of assignment. They have access to all kinds of software to get your assignment done.


Writing a law essay may prove to be an insurmountable obstacle, especially when you need to know the peculiarities of the legislative framework. Take advantage of our top-notch law specialists and get superb grades and 100% satisfaction.

What discipline/subjects do you deal in?

We have highlighted some of the most popular subjects we handle above. Those are just a tip of the iceberg. We deal in all academic disciplines since our writers are as diverse. They have been drawn from across all disciplines, and orders are assigned to those writers believed to be the best in the field. In a nutshell, there is no task we cannot handle; all you need to do is place your order with us. As long as your instructions are clear, just trust we shall deliver irrespective of the discipline.

Are your writers competent enough to handle my paper?

Our essay writers are graduates with bachelor's, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college degree. All our academic writers have a minimum of two years of academic writing. We have a stringent recruitment process to ensure that we get only the most competent essay writers in the industry. We also ensure that the writers are handsomely compensated for their value. The majority of our writers are native English speakers. As such, the fluency of language and grammar is impeccable.

What if I don’t like the paper?

There is a very low likelihood that you won’t like the paper.

Reasons being:

  • When assigning your order, we match the paper’s discipline with the writer’s field/specialization. Since all our writers are graduates, we match the paper’s subject with the field the writer studied. For instance, if it’s a nursing paper, only a nursing graduate and writer will handle it. Furthermore, all our writers have academic writing experience and top-notch research skills.
  • We have a quality assurance that reviews the paper before it gets to you. As such, we ensure that you get a paper that meets the required standard and will most definitely make the grade.

In the event that you don’t like your paper:

  • The writer will revise the paper up to your pleasing. You have unlimited revisions. You simply need to highlight what specifically you don’t like about the paper, and the writer will make the amendments. The paper will be revised until you are satisfied. Revisions are free of charge
  • We will have a different writer write the paper from scratch.
  • Last resort, if the above does not work, we will refund your money.

Will the professor find out I didn’t write the paper myself?

Not at all. All papers are written from scratch. There is no way your tutor or instructor will realize that you did not write the paper yourself. In fact, we recommend using our assignment help services for consistent results.

What if the paper is plagiarized?

We check all papers for plagiarism before we submit them. We use powerful plagiarism checking software such as SafeAssign, LopesWrite, and Turnitin. We also upload the plagiarism report so that you can review it. We understand that plagiarism is academic suicide. We would not take the risk of submitting plagiarized work and jeopardize your academic journey. Furthermore, we do not sell or use prewritten papers, and each paper is written from scratch.

When will I get my paper?

You determine when you get the paper by setting the deadline when placing the order. All papers are delivered within the deadline. We are well aware that we operate in a time-sensitive industry. As such, we have laid out strategies to ensure that the client receives the paper on time and they never miss the deadline. We understand that papers that are submitted late have some points deducted. We do not want you to miss any points due to late submission. We work on beating deadlines by huge margins in order to ensure that you have ample time to review the paper before you submit it.

Will anyone find out that I used your services?

We have a privacy and confidentiality policy that guides our work. We NEVER share any customer information with third parties. Noone will ever know that you used our assignment help services. It’s only between you and us. We are bound by our policies to protect the customer’s identity and information. All your information, such as your names, phone number, email, order information, and so on, are protected. We have robust security systems that ensure that your data is protected. Hacking our systems is close to impossible, and it has never happened.

How our Assignment Help Service Works

1. Place an order

You fill all the paper instructions in the order form. Make sure you include all the helpful materials so that our academic writers can deliver the perfect paper. It will also help to eliminate unnecessary revisions.

2. Pay for the order

Proceed to pay for the paper so that it can be assigned to one of our expert academic writers. The paper subject is matched with the writer’s area of specialization.

3. Track the progress

You communicate with the writer and know about the progress of the paper. The client can ask the writer for drafts of the paper. The client can upload extra material and include additional instructions from the lecturer. Receive a paper.

4. Download the paper

The paper is sent to your email and uploaded to your personal account. You also get a plagiarism report attached to your paper.

smile and order essay GET A PERFECT SCORE!!! smile and order essay Buy Custom Essay

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
error: Content is protected !!
Open chat
Need assignment help? You can contact our live agent via WhatsApp using +1 718 717 2861

Feel free to ask questions, clarifications, or discounts available when placing an order.
  +1 718 717 2861           + 44 161 818 7126           [email protected]
  +1 718 717 2861         [email protected]