CRISPR gene editing & IMMUNOTHERAPY: Faster path to cures

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CRISPR gene editing is a very serious bioscience breakthrough that has broad ramifications in human disease, including cancer. Science has been manipulating DNA for years but CRISPR genome editing is more precise, efficient and cheaper than its predecessors (TALENs & Zinc-finger nucleases).

For cancer researchers, CRISPR/Cas9 has recently become a powerful tool that dramatically accelerates Lab research. For example, one of the Lobular researchers is using CRISPR to elucidate the function of WNT4 in endocrine response and resistance in ILC.

With Immunotherapies gaining more clinical relevance, I've wonder how can this revolutionary technology could accelerate the promising field. Merging these two (CRISPR & Immunotherapy) may yield faster cancer cures.

My understanding is that CRISPR is now being used in CAR-T Immunotherapy, a method where T cells are removed from a patient and modified so that they express receptors specific to the particular form of cancer. The T cells, which can then recognize and kill the cancer cells, are reintroduced into the patient, thus causing a power immune response that wipes out the cancer.

Other than the successful CAR-T therapy, does anyone have specific examples of CRISPR and Immunotherapy being used in the lab for breast cancer?

Comments

  • marijen
    marijen Member Posts: 3,731
    edited December 2015

    I find it disturbing that they are only considering immunotherapy now in the 21st century. It sounds backwards to me

  • JohnSmith
    JohnSmith Member Posts: 651
    edited December 2015

    Thank you kayb!

    Perhaps ImmunoOncology (IO) is a better word to use.

    It's only in the last ~5/10 years that science has finally been able to get good results from IO (in other cancers). The decade-long $3 billion international human genome effort which concluded in 2001 helped with breakthroughs.

    Historically, breast cancer has been considered immunologically silent and lags behind other cancers where durable remissions are being achieved by patients - when by traditional standards - they shouldn't be alive (Melanoma, Leukemia, GBM [brain cancer], Multiple Myeloma, etc). Remember the 60 Minutes episode, HBO/Vice TV special, PBS' Emperor of All Maladies documentary (all covered in this thread, here). They all highlighted the recent IO success stories.

    The paradigm shift has begun. It's time to embrace it and spread the word. Everyone here should be asking their Oncologist (MO) about ImmunoOncology. Naturally, for the majority, the answer will be "we're not there yet". But, if MO's hear it enough times, the message will sink in and accelerate the field.

    The annual SABCS wrapped up this weekend. Despite lots of promising news, it's apparent we need better therapies that measure overall survival (OS) in "Years" and not "Months".

    With the help of CRISPR and other advances, IO might be a solution.

  • marijen
    marijen Member Posts: 3,731
    edited December 2015

    ok thanks for explanation!

  • JohnSmith
    JohnSmith Member Posts: 651
    edited December 2015
  • JohnSmith
    JohnSmith Member Posts: 651
    edited January 2016

    Interesting article, but how does CRISPR deliver the proper changes to all cells?

    That's something that has confused me about CRISPR and its therapeutic use in cancer.
    The average human adult has 37 trillion cells. Each of those cells contains our DNA.
    Within our DNA, CRISPR could theoretically fix those with the BRCA gene mutation (or any mutated gene), thus making it function properly.
    However, how do you fix all 37 trillion cells that contain this DNA error? Would you need to?

    The only example I can find of CRISPR gene editing curing cancer is the UK-based story of the terminal childhood leukemia patient from late last year, here. They used an older gene editing technique called TALENs (instead of CRISPR) to put the child into remission. This was a monumental breakthrough that probably has many cancer researchers rethinking their approaches.
    CRISPR is cheaper, faster and more precise than this old TALEN technique.

    Anyway, CRISPR seems to have greatest potential in "Adoptive Cell Therapy" Immunotherapy, the process where cells are removed from a patient, edited, grown and then put back into the patient with the hope that the bad cells will be eradicated by the newly modified good cells (something along those lines). I think this how the popular Immunotherapy technique called "CAR-T" (chimeric antigen receptor T cells) works. Although, CAR-T has only been successful in hematological malignancies (blood disorders). To my knowledge, CAR-T has not worked in solid tumors like breast cancer, yet.

    If there are any experts that can clarify errors in my comment, please do!!!

  • JohnSmith
    JohnSmith Member Posts: 651
    edited June 2016

    News about CRISPR gene editing and CAR-T Immunotherapy.

    Remember last years news about "Layla", the one-year-old girl with leukemia living in the UK, who exhausted all conventional treatments?
    In Nov 2015, it was reported that her cancer was completely eliminated by CAR-T Immunotherapy. The company, Cellectis, that developed her CAR-T drug, used a gene editing technique called TALENS to create the Immunotherapy. TALENS is an old gene editing method that is slow, expensive and hard to scale. CRISPR, the newer gene editing method has been the rage in scientific circles for the last couple years. As mentioned in earlier posts above, CRISPR is significantly easier to use, much faster and less expensive than TALENS. It's arguably more precise (less off-target effects) too.

    This week, Sean Parker ($250 million Immunotherapy initiative) in conjunction with world renowned Immunotherapy expert, Dr Carl June at UPenn, announced that they plan on using CRISPR gene editing in CAR-T immunotherapy. This first-in-human study is a big deal and a win for science. This new CRISPR gene editing approach will allow Immunotherapies to reach patients faster, be less expensive and safer (less prone to potential DNA editing errors). It should lead to many more "Layla" success stories.
    Here's today's news about this worthy CRISPR / CAR-T proposal: https://www.statnews.com/2016/06/21/crispr-human-trials/

    Also, here's two short 4 minute videos related to this breaking news:
    1. http://bcove.me/ye4iit4k
    2. http://bcove.me/v64o3yy4

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